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authorJari Vetoniemi <jari.vetoniemi@indooratlas.com>2020-03-16 18:49:26 +0900
committerJari Vetoniemi <jari.vetoniemi@indooratlas.com>2020-03-30 00:39:06 +0900
commitfcbf63e62c627deae76c1b8cb8c0876c536ed811 (patch)
tree64cb17de3f41a2b6fef2368028fbd00349946994 /jni/ruby/ext/psych
Fresh start
Diffstat (limited to 'jni/ruby/ext/psych')
-rw-r--r--jni/ruby/ext/psych/Makefile488
-rw-r--r--jni/ruby/ext/psych/depend3
-rw-r--r--jni/ruby/ext/psych/extconf.h14
-rw-r--r--jni/ruby/ext/psych/extconf.rb38
-rw-r--r--jni/ruby/ext/psych/lib/psych.rb498
-rw-r--r--jni/ruby/ext/psych/lib/psych/class_loader.rb101
-rw-r--r--jni/ruby/ext/psych/lib/psych/coder.rb94
-rw-r--r--jni/ruby/ext/psych/lib/psych/core_ext.rb35
-rw-r--r--jni/ruby/ext/psych/lib/psych/deprecated.rb85
-rw-r--r--jni/ruby/ext/psych/lib/psych/exception.rb13
-rw-r--r--jni/ruby/ext/psych/lib/psych/handler.rb249
-rw-r--r--jni/ruby/ext/psych/lib/psych/handlers/document_stream.rb22
-rw-r--r--jni/ruby/ext/psych/lib/psych/handlers/recorder.rb39
-rw-r--r--jni/ruby/ext/psych/lib/psych/json/ruby_events.rb19
-rw-r--r--jni/ruby/ext/psych/lib/psych/json/stream.rb16
-rw-r--r--jni/ruby/ext/psych/lib/psych/json/tree_builder.rb12
-rw-r--r--jni/ruby/ext/psych/lib/psych/json/yaml_events.rb29
-rw-r--r--jni/ruby/ext/psych/lib/psych/nodes.rb77
-rw-r--r--jni/ruby/ext/psych/lib/psych/nodes/alias.rb18
-rw-r--r--jni/ruby/ext/psych/lib/psych/nodes/document.rb60
-rw-r--r--jni/ruby/ext/psych/lib/psych/nodes/mapping.rb56
-rw-r--r--jni/ruby/ext/psych/lib/psych/nodes/node.rb55
-rw-r--r--jni/ruby/ext/psych/lib/psych/nodes/scalar.rb67
-rw-r--r--jni/ruby/ext/psych/lib/psych/nodes/sequence.rb81
-rw-r--r--jni/ruby/ext/psych/lib/psych/nodes/stream.rb37
-rw-r--r--jni/ruby/ext/psych/lib/psych/omap.rb4
-rw-r--r--jni/ruby/ext/psych/lib/psych/parser.rb51
-rw-r--r--jni/ruby/ext/psych/lib/psych/scalar_scanner.rb149
-rw-r--r--jni/ruby/ext/psych/lib/psych/set.rb4
-rw-r--r--jni/ruby/ext/psych/lib/psych/stream.rb37
-rw-r--r--jni/ruby/ext/psych/lib/psych/streaming.rb27
-rw-r--r--jni/ruby/ext/psych/lib/psych/syntax_error.rb21
-rw-r--r--jni/ruby/ext/psych/lib/psych/tree_builder.rb96
-rw-r--r--jni/ruby/ext/psych/lib/psych/visitors.rb6
-rw-r--r--jni/ruby/ext/psych/lib/psych/visitors/depth_first.rb26
-rw-r--r--jni/ruby/ext/psych/lib/psych/visitors/emitter.rb51
-rw-r--r--jni/ruby/ext/psych/lib/psych/visitors/json_tree.rb24
-rw-r--r--jni/ruby/ext/psych/lib/psych/visitors/to_ruby.rb389
-rw-r--r--jni/ruby/ext/psych/lib/psych/visitors/visitor.rb19
-rw-r--r--jni/ruby/ext/psych/lib/psych/visitors/yaml_tree.rb565
-rw-r--r--jni/ruby/ext/psych/lib/psych/y.rb9
-rw-r--r--jni/ruby/ext/psych/psych.c34
-rw-r--r--jni/ruby/ext/psych/psych.gemspec23
-rw-r--r--jni/ruby/ext/psych/psych.h20
-rw-r--r--jni/ruby/ext/psych/psych_emitter.c556
-rw-r--r--jni/ruby/ext/psych/psych_emitter.h8
-rw-r--r--jni/ruby/ext/psych/psych_parser.c597
-rw-r--r--jni/ruby/ext/psych/psych_parser.h6
-rw-r--r--jni/ruby/ext/psych/psych_to_ruby.c43
-rw-r--r--jni/ruby/ext/psych/psych_to_ruby.h8
-rw-r--r--jni/ruby/ext/psych/psych_yaml_tree.c24
-rw-r--r--jni/ruby/ext/psych/psych_yaml_tree.h8
-rw-r--r--jni/ruby/ext/psych/yaml/LICENSE19
-rw-r--r--jni/ruby/ext/psych/yaml/api.c1415
-rw-r--r--jni/ruby/ext/psych/yaml/config.h10
-rw-r--r--jni/ruby/ext/psych/yaml/dumper.c394
-rw-r--r--jni/ruby/ext/psych/yaml/emitter.c2329
-rw-r--r--jni/ruby/ext/psych/yaml/loader.c459
-rw-r--r--jni/ruby/ext/psych/yaml/parser.c1370
-rw-r--r--jni/ruby/ext/psych/yaml/reader.c469
-rw-r--r--jni/ruby/ext/psych/yaml/scanner.c3583
-rw-r--r--jni/ruby/ext/psych/yaml/writer.c141
-rw-r--r--jni/ruby/ext/psych/yaml/yaml.h1971
-rw-r--r--jni/ruby/ext/psych/yaml/yaml_private.h664
64 files changed, 17835 insertions, 0 deletions
diff --git a/jni/ruby/ext/psych/Makefile b/jni/ruby/ext/psych/Makefile
new file mode 100644
index 0000000..66f276f
--- /dev/null
+++ b/jni/ruby/ext/psych/Makefile
@@ -0,0 +1,488 @@
+
+SHELL = /bin/sh
+
+# V=0 quiet, V=1 verbose. other values don't work.
+V = 0
+Q1 = $(V:1=)
+Q = $(Q1:0=@)
+ECHO1 = $(V:1=@:)
+ECHO = $(ECHO1:0=@echo)
+NULLCMD = :
+
+#### Start of system configuration section. ####
+top_srcdir = $(topdir)/.
+srcdir = $(top_srcdir)/ext/psych
+topdir = ../..
+hdrdir = $(top_srcdir)/include
+arch_hdrdir = $(extout)/include/$(arch)
+PATH_SEPARATOR = :
+VPATH = $(srcdir):$(arch_hdrdir)/ruby:$(hdrdir)/ruby:$(srcdir)/yaml
+RUBYLIB =
+RUBYOPT = -
+prefix = $(DESTDIR)/usr/local
+rubysitearchprefix = $(rubylibprefix)/$(sitearch)
+rubyarchprefix = $(rubylibprefix)/$(arch)
+rubylibprefix = $(libdir)/$(RUBY_BASE_NAME)
+exec_prefix = $(prefix)
+vendorarchhdrdir = $(vendorhdrdir)/$(sitearch)
+sitearchhdrdir = $(sitehdrdir)/$(sitearch)
+rubyarchhdrdir = $(rubyhdrdir)/$(arch)
+vendorhdrdir = $(rubyhdrdir)/vendor_ruby
+sitehdrdir = $(rubyhdrdir)/site_ruby
+rubyhdrdir = $(includedir)/$(RUBY_VERSION_NAME)
+vendorarchdir = $(vendorlibdir)/$(sitearch)
+vendorlibdir = $(vendordir)/$(ruby_version)
+vendordir = $(rubylibprefix)/vendor_ruby
+sitearchdir = $(sitelibdir)/$(sitearch)
+sitelibdir = $(sitedir)/$(ruby_version)
+sitedir = $(rubylibprefix)/site_ruby
+rubyarchdir = $(rubylibdir)/$(arch)
+rubylibdir = $(rubylibprefix)/$(ruby_version)
+sitearchincludedir = $(includedir)/$(sitearch)
+archincludedir = $(includedir)/$(arch)
+sitearchlibdir = $(libdir)/$(sitearch)
+archlibdir = $(libdir)/$(arch)
+ridir = $(datarootdir)/$(RI_BASE_NAME)
+mandir = $(datarootdir)/man
+localedir = $(datarootdir)/locale
+libdir = $(exec_prefix)/lib
+psdir = $(docdir)
+pdfdir = $(docdir)
+dvidir = $(docdir)
+htmldir = $(docdir)
+infodir = $(datarootdir)/info
+docdir = $(datarootdir)/doc/$(PACKAGE)
+oldincludedir = $(DESTDIR)/usr/include
+includedir = $(prefix)/include
+localstatedir = $(prefix)/var
+sharedstatedir = $(prefix)/com
+sysconfdir = $(prefix)/etc
+datadir = $(datarootdir)
+datarootdir = $(prefix)/share
+libexecdir = $(exec_prefix)/libexec
+sbindir = $(exec_prefix)/sbin
+bindir = $(exec_prefix)/bin
+archdir = $(rubyarchdir)
+
+
+CC = gcc
+CXX = g++
+LIBRUBY = $(LIBRUBY_SO)
+LIBRUBY_A = lib$(RUBY_SO_NAME)-static.a
+LIBRUBYARG_SHARED = -Wl,-R$(libdir) -L$(libdir) -l$(RUBY_SO_NAME)
+LIBRUBYARG_STATIC = -Wl,-R$(libdir) -L$(libdir) -l$(RUBY_SO_NAME)-static
+empty =
+OUTFLAG = -o $(empty)
+COUTFLAG = -o $(empty)
+
+RUBY_EXTCONF_H = extconf.h
+cflags = $(optflags) $(debugflags) $(warnflags)
+optflags = -O3 -fno-fast-math
+debugflags = -ggdb3
+warnflags = -Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wunused-variable -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration -Wdeprecated-declarations -Wno-packed-bitfield-compat
+CCDLFLAGS = -fPIC
+CFLAGS = $(CCDLFLAGS) $(cflags) -fPIC $(ARCH_FLAG)
+INCFLAGS = -I. -I$(arch_hdrdir) -I$(hdrdir) -I$(srcdir) -I$(srcdir)/yaml
+DEFS =
+CPPFLAGS = -DRUBY_EXTCONF_H=\"$(RUBY_EXTCONF_H)\" $(DEFS) $(cppflags)
+CXXFLAGS = $(CCDLFLAGS) $(cxxflags) $(ARCH_FLAG)
+ldflags = -L. -fstack-protector -rdynamic -Wl,-export-dynamic
+dldflags =
+ARCH_FLAG =
+DLDFLAGS = $(ldflags) $(dldflags) $(ARCH_FLAG)
+LDSHARED = $(CC) -shared
+LDSHAREDXX = $(CXX) -shared
+AR = ar
+EXEEXT =
+
+RUBY_INSTALL_NAME = $(RUBY_BASE_NAME)
+RUBY_SO_NAME = ruby
+RUBYW_INSTALL_NAME =
+RUBY_VERSION_NAME = $(RUBY_BASE_NAME)-$(ruby_version)
+RUBYW_BASE_NAME = rubyw
+RUBY_BASE_NAME = ruby
+
+arch = x86_64-linux
+sitearch = $(arch)
+ruby_version = 2.2.0
+ruby = $(topdir)/miniruby -I'$(topdir)' -I'$(top_srcdir)/lib' -I'$(extout)/$(arch)' -I'$(extout)/common'
+RUBY = $(ruby)
+ruby_headers = $(hdrdir)/ruby.h $(hdrdir)/ruby/ruby.h $(hdrdir)/ruby/defines.h $(hdrdir)/ruby/missing.h $(hdrdir)/ruby/intern.h $(hdrdir)/ruby/st.h $(hdrdir)/ruby/subst.h $(arch_hdrdir)/ruby/config.h $(RUBY_EXTCONF_H)
+
+RM = rm -f
+RM_RF = $(RUBY) -run -e rm -- -rf
+RMDIRS = rmdir --ignore-fail-on-non-empty -p
+MAKEDIRS = /bin/mkdir -p
+INSTALL = /usr/bin/install -c
+INSTALL_PROG = $(INSTALL) -m 0755
+INSTALL_DATA = $(INSTALL) -m 644
+COPY = cp
+TOUCH = exit >
+
+#### End of system configuration section. ####
+
+preload =
+
+libpath = . $(topdir)
+LIBPATH = -L. -L$(topdir)
+DEFFILE =
+
+CLEANFILES = mkmf.log
+DISTCLEANFILES =
+DISTCLEANDIRS =
+
+extout = $(topdir)/.ext
+extout_prefix = $(extout)$(target_prefix)/
+target_prefix =
+LOCAL_LIBS =
+LIBS = $(LIBRUBYARG_SHARED) -lpthread -lgmp -ldl -lcrypt -lm -lc
+ORIG_SRCS = psych.c psych_emitter.c psych_parser.c psych_yaml_tree.c psych_to_ruby.c
+SRCS = $(ORIG_SRCS) psych.c psych_emitter.c psych_parser.c psych_yaml_tree.c psych_to_ruby.c writer.c dumper.c parser.c emitter.c loader.c api.c scanner.c reader.c
+OBJS = psych.o psych_emitter.o psych_parser.o psych_yaml_tree.o psych_to_ruby.o writer.o dumper.o parser.o emitter.o loader.o api.o scanner.o reader.o
+HDRS = $(srcdir)/psych_to_ruby.h $(srcdir)/extconf.h $(srcdir)/psych_parser.h $(srcdir)/psych_yaml_tree.h $(srcdir)/psych.h $(srcdir)/psych_emitter.h
+TARGET = psych
+TARGET_NAME = psych
+TARGET_ENTRY = Init_$(TARGET_NAME)
+DLLIB = $(TARGET).so
+EXTSTATIC =
+STATIC_LIB = $(TARGET).a
+
+TIMESTAMP_DIR = $(extout)/.timestamp
+BINDIR = $(extout)/bin
+RUBYCOMMONDIR = $(extout)/common
+RUBYLIBDIR = $(RUBYCOMMONDIR)$(target_prefix)
+RUBYARCHDIR = $(extout)/$(arch)$(target_prefix)
+HDRDIR = $(extout)/include/ruby$(target_prefix)
+ARCHHDRDIR = $(extout)/include/$(arch)/ruby$(target_prefix)
+
+TARGET_SO = $(RUBYARCHDIR)/$(DLLIB)
+CLEANLIBS = $(RUBYARCHDIR)/$(TARGET).so
+CLEANOBJS = *.o *.bak
+
+all: install
+static: all
+.PHONY: all install static install-so install-rb
+.PHONY: clean clean-so clean-static clean-rb
+
+clean-static::
+clean-rb-default::
+clean-rb::
+clean-so::
+clean: clean-so clean-static clean-rb-default clean-rb
+ -$(Q)$(RM) $(CLEANLIBS) $(CLEANOBJS) $(CLEANFILES) .*.time
+
+distclean-rb-default::
+distclean-rb::
+distclean-so::
+distclean-static::
+distclean: clean distclean-so distclean-static distclean-rb-default distclean-rb
+ -$(Q)$(RM) Makefile $(RUBY_EXTCONF_H) conftest.* mkmf.log
+ -$(Q)$(RM) core ruby$(EXEEXT) *~ $(DISTCLEANFILES)
+ -$(Q)$(RMDIRS) $(DISTCLEANDIRS) 2> /dev/null || true
+
+realclean: distclean
+install: install-so install-rb
+
+install-so: $(RUBYARCHDIR)/$(DLLIB)
+clean-so::
+ -$(Q)$(RM) $(RUBYARCHDIR)/$(DLLIB)
+ -$(Q)$(RMDIRS) $(RUBYARCHDIR) 2> /dev/null || true
+clean-static::
+ -$(Q)$(RM) $(STATIC_LIB)
+install-rb: pre-install-rb install-rb-default
+install-rb-default: pre-install-rb-default
+pre-install-rb: Makefile
+pre-install-rb-default: Makefile
+pre-install-rb-default: $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.json.time
+install-rb-default: $(RUBYLIBDIR)/psych/json/yaml_events.rb
+$(RUBYLIBDIR)/psych/json/yaml_events.rb: $(srcdir)/lib/psych/json/yaml_events.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.json.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/json/yaml_events.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/json/yaml_events.rb
+install-rb-default: $(RUBYLIBDIR)/psych/json/stream.rb
+$(RUBYLIBDIR)/psych/json/stream.rb: $(srcdir)/lib/psych/json/stream.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.json.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/json/stream.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/json/stream.rb
+install-rb-default: $(RUBYLIBDIR)/psych/json/ruby_events.rb
+$(RUBYLIBDIR)/psych/json/ruby_events.rb: $(srcdir)/lib/psych/json/ruby_events.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.json.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/json/ruby_events.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/json/ruby_events.rb
+install-rb-default: $(RUBYLIBDIR)/psych/json/tree_builder.rb
+$(RUBYLIBDIR)/psych/json/tree_builder.rb: $(srcdir)/lib/psych/json/tree_builder.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.json.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/json/tree_builder.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/json/tree_builder.rb
+pre-install-rb-default: $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.time
+install-rb-default: $(RUBYLIBDIR)/psych/omap.rb
+$(RUBYLIBDIR)/psych/omap.rb: $(srcdir)/lib/psych/omap.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/omap.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/omap.rb
+install-rb-default: $(RUBYLIBDIR)/psych/set.rb
+$(RUBYLIBDIR)/psych/set.rb: $(srcdir)/lib/psych/set.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/set.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/set.rb
+install-rb-default: $(RUBYLIBDIR)/psych/nodes.rb
+$(RUBYLIBDIR)/psych/nodes.rb: $(srcdir)/lib/psych/nodes.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/nodes.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/nodes.rb
+install-rb-default: $(RUBYLIBDIR)/psych/handler.rb
+$(RUBYLIBDIR)/psych/handler.rb: $(srcdir)/lib/psych/handler.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/handler.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/handler.rb
+install-rb-default: $(RUBYLIBDIR)/psych/scalar_scanner.rb
+$(RUBYLIBDIR)/psych/scalar_scanner.rb: $(srcdir)/lib/psych/scalar_scanner.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/scalar_scanner.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/scalar_scanner.rb
+install-rb-default: $(RUBYLIBDIR)/psych/coder.rb
+$(RUBYLIBDIR)/psych/coder.rb: $(srcdir)/lib/psych/coder.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/coder.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/coder.rb
+install-rb-default: $(RUBYLIBDIR)/psych/syntax_error.rb
+$(RUBYLIBDIR)/psych/syntax_error.rb: $(srcdir)/lib/psych/syntax_error.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/syntax_error.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/syntax_error.rb
+install-rb-default: $(RUBYLIBDIR)/psych/deprecated.rb
+$(RUBYLIBDIR)/psych/deprecated.rb: $(srcdir)/lib/psych/deprecated.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/deprecated.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/deprecated.rb
+install-rb-default: $(RUBYLIBDIR)/psych/stream.rb
+$(RUBYLIBDIR)/psych/stream.rb: $(srcdir)/lib/psych/stream.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/stream.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/stream.rb
+install-rb-default: $(RUBYLIBDIR)/psych/class_loader.rb
+$(RUBYLIBDIR)/psych/class_loader.rb: $(srcdir)/lib/psych/class_loader.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/class_loader.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/class_loader.rb
+install-rb-default: $(RUBYLIBDIR)/psych/visitors.rb
+$(RUBYLIBDIR)/psych/visitors.rb: $(srcdir)/lib/psych/visitors.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/visitors.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/visitors.rb
+install-rb-default: $(RUBYLIBDIR)/psych/exception.rb
+$(RUBYLIBDIR)/psych/exception.rb: $(srcdir)/lib/psych/exception.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/exception.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/exception.rb
+install-rb-default: $(RUBYLIBDIR)/psych/core_ext.rb
+$(RUBYLIBDIR)/psych/core_ext.rb: $(srcdir)/lib/psych/core_ext.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/core_ext.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/core_ext.rb
+install-rb-default: $(RUBYLIBDIR)/psych/streaming.rb
+$(RUBYLIBDIR)/psych/streaming.rb: $(srcdir)/lib/psych/streaming.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/streaming.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/streaming.rb
+install-rb-default: $(RUBYLIBDIR)/psych/tree_builder.rb
+$(RUBYLIBDIR)/psych/tree_builder.rb: $(srcdir)/lib/psych/tree_builder.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/tree_builder.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/tree_builder.rb
+install-rb-default: $(RUBYLIBDIR)/psych/parser.rb
+$(RUBYLIBDIR)/psych/parser.rb: $(srcdir)/lib/psych/parser.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/parser.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/parser.rb
+install-rb-default: $(RUBYLIBDIR)/psych/y.rb
+$(RUBYLIBDIR)/psych/y.rb: $(srcdir)/lib/psych/y.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/y.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/y.rb
+pre-install-rb-default: $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.handlers.time
+install-rb-default: $(RUBYLIBDIR)/psych/handlers/document_stream.rb
+$(RUBYLIBDIR)/psych/handlers/document_stream.rb: $(srcdir)/lib/psych/handlers/document_stream.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.handlers.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/handlers/document_stream.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/handlers/document_stream.rb
+install-rb-default: $(RUBYLIBDIR)/psych/handlers/recorder.rb
+$(RUBYLIBDIR)/psych/handlers/recorder.rb: $(srcdir)/lib/psych/handlers/recorder.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.handlers.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/handlers/recorder.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/handlers/recorder.rb
+pre-install-rb-default: $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.nodes.time
+install-rb-default: $(RUBYLIBDIR)/psych/nodes/document.rb
+$(RUBYLIBDIR)/psych/nodes/document.rb: $(srcdir)/lib/psych/nodes/document.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.nodes.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/nodes/document.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/nodes/document.rb
+install-rb-default: $(RUBYLIBDIR)/psych/nodes/mapping.rb
+$(RUBYLIBDIR)/psych/nodes/mapping.rb: $(srcdir)/lib/psych/nodes/mapping.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.nodes.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/nodes/mapping.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/nodes/mapping.rb
+install-rb-default: $(RUBYLIBDIR)/psych/nodes/stream.rb
+$(RUBYLIBDIR)/psych/nodes/stream.rb: $(srcdir)/lib/psych/nodes/stream.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.nodes.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/nodes/stream.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/nodes/stream.rb
+install-rb-default: $(RUBYLIBDIR)/psych/nodes/scalar.rb
+$(RUBYLIBDIR)/psych/nodes/scalar.rb: $(srcdir)/lib/psych/nodes/scalar.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.nodes.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/nodes/scalar.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/nodes/scalar.rb
+install-rb-default: $(RUBYLIBDIR)/psych/nodes/sequence.rb
+$(RUBYLIBDIR)/psych/nodes/sequence.rb: $(srcdir)/lib/psych/nodes/sequence.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.nodes.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/nodes/sequence.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/nodes/sequence.rb
+install-rb-default: $(RUBYLIBDIR)/psych/nodes/node.rb
+$(RUBYLIBDIR)/psych/nodes/node.rb: $(srcdir)/lib/psych/nodes/node.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.nodes.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/nodes/node.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/nodes/node.rb
+install-rb-default: $(RUBYLIBDIR)/psych/nodes/alias.rb
+$(RUBYLIBDIR)/psych/nodes/alias.rb: $(srcdir)/lib/psych/nodes/alias.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.nodes.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/nodes/alias.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/nodes/alias.rb
+pre-install-rb-default: $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.visitors.time
+install-rb-default: $(RUBYLIBDIR)/psych/visitors/to_ruby.rb
+$(RUBYLIBDIR)/psych/visitors/to_ruby.rb: $(srcdir)/lib/psych/visitors/to_ruby.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.visitors.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/visitors/to_ruby.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/visitors/to_ruby.rb
+install-rb-default: $(RUBYLIBDIR)/psych/visitors/visitor.rb
+$(RUBYLIBDIR)/psych/visitors/visitor.rb: $(srcdir)/lib/psych/visitors/visitor.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.visitors.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/visitors/visitor.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/visitors/visitor.rb
+install-rb-default: $(RUBYLIBDIR)/psych/visitors/yaml_tree.rb
+$(RUBYLIBDIR)/psych/visitors/yaml_tree.rb: $(srcdir)/lib/psych/visitors/yaml_tree.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.visitors.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/visitors/yaml_tree.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/visitors/yaml_tree.rb
+install-rb-default: $(RUBYLIBDIR)/psych/visitors/depth_first.rb
+$(RUBYLIBDIR)/psych/visitors/depth_first.rb: $(srcdir)/lib/psych/visitors/depth_first.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.visitors.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/visitors/depth_first.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/visitors/depth_first.rb
+install-rb-default: $(RUBYLIBDIR)/psych/visitors/emitter.rb
+$(RUBYLIBDIR)/psych/visitors/emitter.rb: $(srcdir)/lib/psych/visitors/emitter.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.visitors.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/visitors/emitter.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/visitors/emitter.rb
+install-rb-default: $(RUBYLIBDIR)/psych/visitors/json_tree.rb
+$(RUBYLIBDIR)/psych/visitors/json_tree.rb: $(srcdir)/lib/psych/visitors/json_tree.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.visitors.time
+ $(Q) $(COPY) $(srcdir)/lib/psych/visitors/json_tree.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych/visitors/json_tree.rb
+pre-install-rb-default: $(TIMESTAMP_DIR)/.RUBYLIBDIR.time
+install-rb-default: $(RUBYLIBDIR)/psych.rb
+$(RUBYLIBDIR)/psych.rb: $(srcdir)/lib/psych.rb $(TIMESTAMP_DIR)/.RUBYLIBDIR.time
+ $(Q) $(COPY) $(srcdir)/lib/psych.rb $(@D)
+clean-rb-default::
+ -$(Q)$(RM) $(RUBYLIBDIR)/psych.rb
+pre-install-rb-default:
+ $(ECHO) installing default psych libraries
+clean-rb-default::
+ -$(Q)$(RMDIRS) $(RUBYLIBDIR)/psych/json 2> /dev/null || true
+ -$(Q)$(RMDIRS) $(RUBYLIBDIR)/psych/handlers 2> /dev/null || true
+ -$(Q)$(RMDIRS) $(RUBYLIBDIR)/psych/nodes 2> /dev/null || true
+ -$(Q)$(RMDIRS) $(RUBYLIBDIR)/psych/visitors 2> /dev/null || true
+ -$(Q)$(RMDIRS) $(RUBYLIBDIR)/psych 2> /dev/null || true
+ -$(Q)$(RMDIRS) $(RUBYLIBDIR) 2> /dev/null || true
+$(TIMESTAMP_DIR)/.RUBYARCHDIR.time:
+ $(Q) $(MAKEDIRS) $(@D) $(RUBYARCHDIR)
+ $(Q) $(TOUCH) $@
+$(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.json.time:
+ $(Q) $(MAKEDIRS) $(@D) $(RUBYLIBDIR)/psych/json
+ $(Q) $(TOUCH) $@
+$(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.time:
+ $(Q) $(MAKEDIRS) $(@D) $(RUBYLIBDIR)/psych
+ $(Q) $(TOUCH) $@
+$(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.handlers.time:
+ $(Q) $(MAKEDIRS) $(@D) $(RUBYLIBDIR)/psych/handlers
+ $(Q) $(TOUCH) $@
+$(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.nodes.time:
+ $(Q) $(MAKEDIRS) $(@D) $(RUBYLIBDIR)/psych/nodes
+ $(Q) $(TOUCH) $@
+$(TIMESTAMP_DIR)/.RUBYLIBDIR.-.psych.-.visitors.time:
+ $(Q) $(MAKEDIRS) $(@D) $(RUBYLIBDIR)/psych/visitors
+ $(Q) $(TOUCH) $@
+$(TIMESTAMP_DIR)/.RUBYLIBDIR.time:
+ $(Q) $(MAKEDIRS) $(@D) $(RUBYLIBDIR)
+ $(Q) $(TOUCH) $@
+
+site-install: site-install-so site-install-rb
+site-install-so: install-so
+site-install-rb: install-rb
+
+.SUFFIXES: .c .m .cc .mm .cxx .cpp .o .S
+
+.cc.o:
+ $(ECHO) compiling $(<)
+ $(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -c $<
+
+.cc.S:
+ $(ECHO) translating $(<)
+ $(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -S $<
+
+.mm.o:
+ $(ECHO) compiling $(<)
+ $(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -c $<
+
+.mm.S:
+ $(ECHO) translating $(<)
+ $(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -S $<
+
+.cxx.o:
+ $(ECHO) compiling $(<)
+ $(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -c $<
+
+.cxx.S:
+ $(ECHO) translating $(<)
+ $(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -S $<
+
+.cpp.o:
+ $(ECHO) compiling $(<)
+ $(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -c $<
+
+.cpp.S:
+ $(ECHO) translating $(<)
+ $(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -S $<
+
+.c.o:
+ $(ECHO) compiling $(<)
+ $(Q) $(CC) $(INCFLAGS) $(CPPFLAGS) $(CFLAGS) $(COUTFLAG)$@ -c $<
+
+.c.S:
+ $(ECHO) translating $(<)
+ $(Q) $(CC) $(INCFLAGS) $(CPPFLAGS) $(CFLAGS) $(COUTFLAG)$@ -S $<
+
+.m.o:
+ $(ECHO) compiling $(<)
+ $(Q) $(CC) $(INCFLAGS) $(CPPFLAGS) $(CFLAGS) $(COUTFLAG)$@ -c $<
+
+.m.S:
+ $(ECHO) translating $(<)
+ $(Q) $(CC) $(INCFLAGS) $(CPPFLAGS) $(CFLAGS) $(COUTFLAG)$@ -S $<
+
+$(RUBYARCHDIR)/$(DLLIB): $(OBJS) Makefile $(TIMESTAMP_DIR)/.RUBYARCHDIR.time
+ $(ECHO) linking shared-object $(DLLIB)
+ -$(Q)$(RM) $(@)
+ $(Q) $(LDSHARED) -o $@ $(OBJS) $(LIBPATH) $(DLDFLAGS) $(LOCAL_LIBS) $(LIBS)
+
+$(STATIC_LIB): $(OBJS)
+ -$(Q)$(RM) $(@)
+ $(ECHO) linking static-library $(@)
+ $(Q) $(AR) cru $@ $(OBJS)
+ -$(Q)ranlib $(@) 2> /dev/null || true
+
+###
+$(OBJS): $(RUBY_EXTCONF_H)
+
+$(OBJS): $(HDRS) $(ruby_headers) \
+ $(hdrdir)/ruby/encoding.h \
+ $(hdrdir)/ruby/oniguruma.h
diff --git a/jni/ruby/ext/psych/depend b/jni/ruby/ext/psych/depend
new file mode 100644
index 0000000..79b6c53
--- /dev/null
+++ b/jni/ruby/ext/psych/depend
@@ -0,0 +1,3 @@
+$(OBJS): $(HDRS) $(ruby_headers) \
+ $(hdrdir)/ruby/encoding.h \
+ $(hdrdir)/ruby/oniguruma.h
diff --git a/jni/ruby/ext/psych/extconf.h b/jni/ruby/ext/psych/extconf.h
new file mode 100644
index 0000000..f5d6363
--- /dev/null
+++ b/jni/ruby/ext/psych/extconf.h
@@ -0,0 +1,14 @@
+#ifndef EXTCONF_H
+#define EXTCONF_H
+#define HAVE_DLFCN_H 1
+#define HAVE_INTTYPES_H 1
+#define HAVE_MEMORY_H 1
+#define HAVE_STDINT_H 1
+#define HAVE_STDLIB_H 1
+#define HAVE_STRINGS_H 1
+#define HAVE_STRING_H 1
+#define HAVE_SYS_STAT_H 1
+#define HAVE_SYS_TYPES_H 1
+#define HAVE_UNISTD_H 1
+#define HAVE_CONFIG_H 1
+#endif
diff --git a/jni/ruby/ext/psych/extconf.rb b/jni/ruby/ext/psych/extconf.rb
new file mode 100644
index 0000000..65e83a3
--- /dev/null
+++ b/jni/ruby/ext/psych/extconf.rb
@@ -0,0 +1,38 @@
+# -*- coding: us-ascii -*-
+require 'mkmf'
+require 'fileutils'
+
+# :stopdoc:
+
+dir_config 'libyaml'
+
+if enable_config("bundled-libyaml", false) || !(find_header('yaml.h') && find_library('yaml', 'yaml_get_version'))
+ # Embed libyaml since we could not find it.
+
+ $VPATH << "$(srcdir)/yaml"
+ $INCFLAGS << " -I$(srcdir)/yaml"
+
+ $srcs = Dir.glob("#{$srcdir}/{,yaml/}*.c").map {|n| File.basename(n)}
+
+ if have_macro("_WIN32")
+ $CPPFLAGS << " -DYAML_DECLARE_STATIC -DHAVE_CONFIG_H"
+ end
+
+ have_header 'dlfcn.h'
+ have_header 'inttypes.h'
+ have_header 'memory.h'
+ have_header 'stdint.h'
+ have_header 'stdlib.h'
+ have_header 'strings.h'
+ have_header 'string.h'
+ have_header 'sys/stat.h'
+ have_header 'sys/types.h'
+ have_header 'unistd.h'
+
+ find_header 'yaml.h'
+ have_header 'config.h'
+end
+
+create_makefile 'psych'
+
+# :startdoc:
diff --git a/jni/ruby/ext/psych/lib/psych.rb b/jni/ruby/ext/psych/lib/psych.rb
new file mode 100644
index 0000000..1933437
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych.rb
@@ -0,0 +1,498 @@
+require 'psych.so'
+require 'psych/nodes'
+require 'psych/streaming'
+require 'psych/visitors'
+require 'psych/handler'
+require 'psych/tree_builder'
+require 'psych/parser'
+require 'psych/omap'
+require 'psych/set'
+require 'psych/coder'
+require 'psych/core_ext'
+require 'psych/deprecated'
+require 'psych/stream'
+require 'psych/json/tree_builder'
+require 'psych/json/stream'
+require 'psych/handlers/document_stream'
+require 'psych/class_loader'
+
+###
+# = Overview
+#
+# Psych is a YAML parser and emitter.
+# Psych leverages libyaml [Home page: http://pyyaml.org/wiki/LibYAML]
+# or [HG repo: https://bitbucket.org/xi/libyaml] for its YAML parsing
+# and emitting capabilities. In addition to wrapping libyaml, Psych also
+# knows how to serialize and de-serialize most Ruby objects to and from
+# the YAML format.
+#
+# = I NEED TO PARSE OR EMIT YAML RIGHT NOW!
+#
+# # Parse some YAML
+# Psych.load("--- foo") # => "foo"
+#
+# # Emit some YAML
+# Psych.dump("foo") # => "--- foo\n...\n"
+# { :a => 'b'}.to_yaml # => "---\n:a: b\n"
+#
+# Got more time on your hands? Keep on reading!
+#
+# == YAML Parsing
+#
+# Psych provides a range of interfaces for parsing a YAML document ranging from
+# low level to high level, depending on your parsing needs. At the lowest
+# level, is an event based parser. Mid level is access to the raw YAML AST,
+# and at the highest level is the ability to unmarshal YAML to Ruby objects.
+#
+# == YAML Emitting
+#
+# Psych provides a range of interfaces ranging from low to high level for
+# producing YAML documents. Very similar to the YAML parsing interfaces, Psych
+# provides at the lowest level, an event based system, mid-level is building
+# a YAML AST, and the highest level is converting a Ruby object straight to
+# a YAML document.
+#
+# == High-level API
+#
+# === Parsing
+#
+# The high level YAML parser provided by Psych simply takes YAML as input and
+# returns a Ruby data structure. For information on using the high level parser
+# see Psych.load
+#
+# ==== Reading from a string
+#
+# Psych.load("--- a") # => 'a'
+# Psych.load("---\n - a\n - b") # => ['a', 'b']
+#
+# ==== Reading from a file
+#
+# Psych.load_file("database.yml")
+#
+# ==== Exception handling
+#
+# begin
+# # The second argument changes only the exception contents
+# Psych.parse("--- `", "file.txt")
+# rescue Psych::SyntaxError => ex
+# ex.file # => 'file.txt'
+# ex.message # => "(file.txt): found character that cannot start any token"
+# end
+#
+# === Emitting
+#
+# The high level emitter has the easiest interface. Psych simply takes a Ruby
+# data structure and converts it to a YAML document. See Psych.dump for more
+# information on dumping a Ruby data structure.
+#
+# ==== Writing to a string
+#
+# # Dump an array, get back a YAML string
+# Psych.dump(['a', 'b']) # => "---\n- a\n- b\n"
+#
+# # Dump an array to an IO object
+# Psych.dump(['a', 'b'], StringIO.new) # => #<StringIO:0x000001009d0890>
+#
+# # Dump an array with indentation set
+# Psych.dump(['a', ['b']], :indentation => 3) # => "---\n- a\n- - b\n"
+#
+# # Dump an array to an IO with indentation set
+# Psych.dump(['a', ['b']], StringIO.new, :indentation => 3)
+#
+# ==== Writing to a file
+#
+# Currently there is no direct API for dumping Ruby structure to file:
+#
+# File.open('database.yml', 'w') do |file|
+# file.write(Psych.dump(['a', 'b']))
+# end
+#
+# == Mid-level API
+#
+# === Parsing
+#
+# Psych provides access to an AST produced from parsing a YAML document. This
+# tree is built using the Psych::Parser and Psych::TreeBuilder. The AST can
+# be examined and manipulated freely. Please see Psych::parse_stream,
+# Psych::Nodes, and Psych::Nodes::Node for more information on dealing with
+# YAML syntax trees.
+#
+# ==== Reading from a string
+#
+# # Returns Psych::Nodes::Stream
+# Psych.parse_stream("---\n - a\n - b")
+#
+# # Returns Psych::Nodes::Document
+# Psych.parse("---\n - a\n - b")
+#
+# ==== Reading from a file
+#
+# # Returns Psych::Nodes::Stream
+# Psych.parse_stream(File.read('database.yml'))
+#
+# # Returns Psych::Nodes::Document
+# Psych.parse_file('database.yml')
+#
+# ==== Exception handling
+#
+# begin
+# # The second argument changes only the exception contents
+# Psych.parse("--- `", "file.txt")
+# rescue Psych::SyntaxError => ex
+# ex.file # => 'file.txt'
+# ex.message # => "(file.txt): found character that cannot start any token"
+# end
+#
+# === Emitting
+#
+# At the mid level is building an AST. This AST is exactly the same as the AST
+# used when parsing a YAML document. Users can build an AST by hand and the
+# AST knows how to emit itself as a YAML document. See Psych::Nodes,
+# Psych::Nodes::Node, and Psych::TreeBuilder for more information on building
+# a YAML AST.
+#
+# ==== Writing to a string
+#
+# # We need Psych::Nodes::Stream (not Psych::Nodes::Document)
+# stream = Psych.parse_stream("---\n - a\n - b")
+#
+# stream.to_yaml # => "---\n- a\n- b\n"
+#
+# ==== Writing to a file
+#
+# # We need Psych::Nodes::Stream (not Psych::Nodes::Document)
+# stream = Psych.parse_stream(File.read('database.yml'))
+#
+# File.open('database.yml', 'w') do |file|
+# file.write(stream.to_yaml)
+# end
+#
+# == Low-level API
+#
+# === Parsing
+#
+# The lowest level parser should be used when the YAML input is already known,
+# and the developer does not want to pay the price of building an AST or
+# automatic detection and conversion to Ruby objects. See Psych::Parser for
+# more information on using the event based parser.
+#
+# ==== Reading to Psych::Nodes::Stream structure
+#
+# parser = Psych::Parser.new(TreeBuilder.new) # => #<Psych::Parser>
+# parser = Psych.parser # it's an alias for the above
+#
+# parser.parse("---\n - a\n - b") # => #<Psych::Parser>
+# parser.handler # => #<Psych::TreeBuilder>
+# parser.handler.root # => #<Psych::Nodes::Stream>
+#
+# ==== Receiving an events stream
+#
+# parser = Psych::Parser.new(Psych::Handlers::Recorder.new)
+#
+# parser.parse("---\n - a\n - b")
+# parser.events # => [list of [event, args] lists]
+# # event is one of: Psych::Handler::EVENTS
+# # args are the arguments passed to the event
+#
+# === Emitting
+#
+# The lowest level emitter is an event based system. Events are sent to a
+# Psych::Emitter object. That object knows how to convert the events to a YAML
+# document. This interface should be used when document format is known in
+# advance or speed is a concern. See Psych::Emitter for more information.
+#
+# ==== Writing to a Ruby structure
+#
+# Psych.parser.parse("--- a") # => #<Psych::Parser>
+#
+# parser.handler.first # => #<Psych::Nodes::Stream>
+# parser.handler.first.to_ruby # => ["a"]
+#
+# parser.handler.root.first # => #<Psych::Nodes::Document>
+# parser.handler.root.first.to_ruby # => "a"
+#
+# # You can instantiate an Emitter manually
+# Psych::Visitors::ToRuby.new.accept(parser.handler.root.first)
+# # => "a"
+
+module Psych
+ # The version is Psych you're using
+ VERSION = '2.0.8'
+
+ # The version of libyaml Psych is using
+ LIBYAML_VERSION = Psych.libyaml_version.join '.'
+
+ ###
+ # Load +yaml+ in to a Ruby data structure. If multiple documents are
+ # provided, the object contained in the first document will be returned.
+ # +filename+ will be used in the exception message if any exception is raised
+ # while parsing.
+ #
+ # Raises a Psych::SyntaxError when a YAML syntax error is detected.
+ #
+ # Example:
+ #
+ # Psych.load("--- a") # => 'a'
+ # Psych.load("---\n - a\n - b") # => ['a', 'b']
+ #
+ # begin
+ # Psych.load("--- `", "file.txt")
+ # rescue Psych::SyntaxError => ex
+ # ex.file # => 'file.txt'
+ # ex.message # => "(file.txt): found character that cannot start any token"
+ # end
+ def self.load yaml, filename = nil
+ result = parse(yaml, filename)
+ result ? result.to_ruby : result
+ end
+
+ ###
+ # Safely load the yaml string in +yaml+. By default, only the following
+ # classes are allowed to be deserialized:
+ #
+ # * TrueClass
+ # * FalseClass
+ # * NilClass
+ # * Numeric
+ # * String
+ # * Array
+ # * Hash
+ #
+ # Recursive data structures are not allowed by default. Arbitrary classes
+ # can be allowed by adding those classes to the +whitelist+. They are
+ # additive. For example, to allow Date deserialization:
+ #
+ # Psych.safe_load(yaml, [Date])
+ #
+ # Now the Date class can be loaded in addition to the classes listed above.
+ #
+ # Aliases can be explicitly allowed by changing the +aliases+ parameter.
+ # For example:
+ #
+ # x = []
+ # x << x
+ # yaml = Psych.dump x
+ # Psych.safe_load yaml # => raises an exception
+ # Psych.safe_load yaml, [], [], true # => loads the aliases
+ #
+ # A Psych::DisallowedClass exception will be raised if the yaml contains a
+ # class that isn't in the whitelist.
+ #
+ # A Psych::BadAlias exception will be raised if the yaml contains aliases
+ # but the +aliases+ parameter is set to false.
+ def self.safe_load yaml, whitelist_classes = [], whitelist_symbols = [], aliases = false, filename = nil
+ result = parse(yaml, filename)
+ return unless result
+
+ class_loader = ClassLoader::Restricted.new(whitelist_classes.map(&:to_s),
+ whitelist_symbols.map(&:to_s))
+ scanner = ScalarScanner.new class_loader
+ if aliases
+ visitor = Visitors::ToRuby.new scanner, class_loader
+ else
+ visitor = Visitors::NoAliasRuby.new scanner, class_loader
+ end
+ visitor.accept result
+ end
+
+ ###
+ # Parse a YAML string in +yaml+. Returns the Psych::Nodes::Document.
+ # +filename+ is used in the exception message if a Psych::SyntaxError is
+ # raised.
+ #
+ # Raises a Psych::SyntaxError when a YAML syntax error is detected.
+ #
+ # Example:
+ #
+ # Psych.parse("---\n - a\n - b") # => #<Psych::Nodes::Document:0x00>
+ #
+ # begin
+ # Psych.parse("--- `", "file.txt")
+ # rescue Psych::SyntaxError => ex
+ # ex.file # => 'file.txt'
+ # ex.message # => "(file.txt): found character that cannot start any token"
+ # end
+ #
+ # See Psych::Nodes for more information about YAML AST.
+ def self.parse yaml, filename = nil
+ parse_stream(yaml, filename) do |node|
+ return node
+ end
+ false
+ end
+
+ ###
+ # Parse a file at +filename+. Returns the Psych::Nodes::Document.
+ #
+ # Raises a Psych::SyntaxError when a YAML syntax error is detected.
+ def self.parse_file filename
+ File.open filename, 'r:bom|utf-8' do |f|
+ parse f, filename
+ end
+ end
+
+ ###
+ # Returns a default parser
+ def self.parser
+ Psych::Parser.new(TreeBuilder.new)
+ end
+
+ ###
+ # Parse a YAML string in +yaml+. Returns the Psych::Nodes::Stream.
+ # This method can handle multiple YAML documents contained in +yaml+.
+ # +filename+ is used in the exception message if a Psych::SyntaxError is
+ # raised.
+ #
+ # If a block is given, a Psych::Nodes::Document node will be yielded to the
+ # block as it's being parsed.
+ #
+ # Raises a Psych::SyntaxError when a YAML syntax error is detected.
+ #
+ # Example:
+ #
+ # Psych.parse_stream("---\n - a\n - b") # => #<Psych::Nodes::Stream:0x00>
+ #
+ # Psych.parse_stream("--- a\n--- b") do |node|
+ # node # => #<Psych::Nodes::Document:0x00>
+ # end
+ #
+ # begin
+ # Psych.parse_stream("--- `", "file.txt")
+ # rescue Psych::SyntaxError => ex
+ # ex.file # => 'file.txt'
+ # ex.message # => "(file.txt): found character that cannot start any token"
+ # end
+ #
+ # See Psych::Nodes for more information about YAML AST.
+ def self.parse_stream yaml, filename = nil, &block
+ if block_given?
+ parser = Psych::Parser.new(Handlers::DocumentStream.new(&block))
+ parser.parse yaml, filename
+ else
+ parser = self.parser
+ parser.parse yaml, filename
+ parser.handler.root
+ end
+ end
+
+ ###
+ # call-seq:
+ # Psych.dump(o) -> string of yaml
+ # Psych.dump(o, options) -> string of yaml
+ # Psych.dump(o, io) -> io object passed in
+ # Psych.dump(o, io, options) -> io object passed in
+ #
+ # Dump Ruby object +o+ to a YAML string. Optional +options+ may be passed in
+ # to control the output format. If an IO object is passed in, the YAML will
+ # be dumped to that IO object.
+ #
+ # Example:
+ #
+ # # Dump an array, get back a YAML string
+ # Psych.dump(['a', 'b']) # => "---\n- a\n- b\n"
+ #
+ # # Dump an array to an IO object
+ # Psych.dump(['a', 'b'], StringIO.new) # => #<StringIO:0x000001009d0890>
+ #
+ # # Dump an array with indentation set
+ # Psych.dump(['a', ['b']], :indentation => 3) # => "---\n- a\n- - b\n"
+ #
+ # # Dump an array to an IO with indentation set
+ # Psych.dump(['a', ['b']], StringIO.new, :indentation => 3)
+ def self.dump o, io = nil, options = {}
+ if Hash === io
+ options = io
+ io = nil
+ end
+
+ visitor = Psych::Visitors::YAMLTree.create options
+ visitor << o
+ visitor.tree.yaml io, options
+ end
+
+ ###
+ # Dump a list of objects as separate documents to a document stream.
+ #
+ # Example:
+ #
+ # Psych.dump_stream("foo\n ", {}) # => "--- ! \"foo\\n \"\n--- {}\n"
+ def self.dump_stream *objects
+ visitor = Psych::Visitors::YAMLTree.create({})
+ objects.each do |o|
+ visitor << o
+ end
+ visitor.tree.yaml
+ end
+
+ ###
+ # Dump Ruby +object+ to a JSON string.
+ def self.to_json object
+ visitor = Psych::Visitors::JSONTree.create
+ visitor << object
+ visitor.tree.yaml
+ end
+
+ ###
+ # Load multiple documents given in +yaml+. Returns the parsed documents
+ # as a list. If a block is given, each document will be converted to Ruby
+ # and passed to the block during parsing
+ #
+ # Example:
+ #
+ # Psych.load_stream("--- foo\n...\n--- bar\n...") # => ['foo', 'bar']
+ #
+ # list = []
+ # Psych.load_stream("--- foo\n...\n--- bar\n...") do |ruby|
+ # list << ruby
+ # end
+ # list # => ['foo', 'bar']
+ #
+ def self.load_stream yaml, filename = nil
+ if block_given?
+ parse_stream(yaml, filename) do |node|
+ yield node.to_ruby
+ end
+ else
+ parse_stream(yaml, filename).children.map { |child| child.to_ruby }
+ end
+ end
+
+ ###
+ # Load the document contained in +filename+. Returns the yaml contained in
+ # +filename+ as a Ruby object
+ def self.load_file filename
+ File.open(filename, 'r:bom|utf-8') { |f| self.load f, filename }
+ end
+
+ # :stopdoc:
+ @domain_types = {}
+ def self.add_domain_type domain, type_tag, &block
+ key = ['tag', domain, type_tag].join ':'
+ @domain_types[key] = [key, block]
+ @domain_types["tag:#{type_tag}"] = [key, block]
+ end
+
+ def self.add_builtin_type type_tag, &block
+ domain = 'yaml.org,2002'
+ key = ['tag', domain, type_tag].join ':'
+ @domain_types[key] = [key, block]
+ end
+
+ def self.remove_type type_tag
+ @domain_types.delete type_tag
+ end
+
+ @load_tags = {}
+ @dump_tags = {}
+ def self.add_tag tag, klass
+ @load_tags[tag] = klass.name
+ @dump_tags[klass] = tag
+ end
+
+ class << self
+ attr_accessor :load_tags
+ attr_accessor :dump_tags
+ attr_accessor :domain_types
+ end
+ # :startdoc:
+end
diff --git a/jni/ruby/ext/psych/lib/psych/class_loader.rb b/jni/ruby/ext/psych/lib/psych/class_loader.rb
new file mode 100644
index 0000000..46c6b93
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/class_loader.rb
@@ -0,0 +1,101 @@
+require 'psych/omap'
+require 'psych/set'
+
+module Psych
+ class ClassLoader # :nodoc:
+ BIG_DECIMAL = 'BigDecimal'
+ COMPLEX = 'Complex'
+ DATE = 'Date'
+ DATE_TIME = 'DateTime'
+ EXCEPTION = 'Exception'
+ OBJECT = 'Object'
+ PSYCH_OMAP = 'Psych::Omap'
+ PSYCH_SET = 'Psych::Set'
+ RANGE = 'Range'
+ RATIONAL = 'Rational'
+ REGEXP = 'Regexp'
+ STRUCT = 'Struct'
+ SYMBOL = 'Symbol'
+
+ def initialize
+ @cache = CACHE.dup
+ end
+
+ def load klassname
+ return nil if !klassname || klassname.empty?
+
+ find klassname
+ end
+
+ def symbolize sym
+ symbol
+ sym.to_sym
+ end
+
+ constants.each do |const|
+ konst = const_get const
+ define_method(const.to_s.downcase) do
+ load konst
+ end
+ end
+
+ private
+
+ def find klassname
+ @cache[klassname] ||= resolve(klassname)
+ end
+
+ def resolve klassname
+ name = klassname
+ retried = false
+
+ begin
+ path2class(name)
+ rescue ArgumentError, NameError => ex
+ unless retried
+ name = "Struct::#{name}"
+ retried = ex
+ retry
+ end
+ raise retried
+ end
+ end
+
+ CACHE = Hash[constants.map { |const|
+ val = const_get const
+ begin
+ [val, ::Object.const_get(val)]
+ rescue
+ nil
+ end
+ }.compact]
+
+ class Restricted < ClassLoader
+ def initialize classes, symbols
+ @classes = classes
+ @symbols = symbols
+ super()
+ end
+
+ def symbolize sym
+ return super if @symbols.empty?
+
+ if @symbols.include? sym
+ super
+ else
+ raise DisallowedClass, 'Symbol'
+ end
+ end
+
+ private
+
+ def find klassname
+ if @classes.include? klassname
+ super
+ else
+ raise DisallowedClass, klassname
+ end
+ end
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/coder.rb b/jni/ruby/ext/psych/lib/psych/coder.rb
new file mode 100644
index 0000000..2b830d2
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/coder.rb
@@ -0,0 +1,94 @@
+module Psych
+ ###
+ # If an object defines +encode_with+, then an instance of Psych::Coder will
+ # be passed to the method when the object is being serialized. The Coder
+ # automatically assumes a Psych::Nodes::Mapping is being emitted. Other
+ # objects like Sequence and Scalar may be emitted if +seq=+ or +scalar=+ are
+ # called, respectively.
+ class Coder
+ attr_accessor :tag, :style, :implicit, :object
+ attr_reader :type, :seq
+
+ def initialize tag
+ @map = {}
+ @seq = []
+ @implicit = false
+ @type = :map
+ @tag = tag
+ @style = Psych::Nodes::Mapping::BLOCK
+ @scalar = nil
+ @object = nil
+ end
+
+ def scalar *args
+ if args.length > 0
+ warn "#{caller[0]}: Coder#scalar(a,b,c) is deprecated" if $VERBOSE
+ @tag, @scalar, _ = args
+ @type = :scalar
+ end
+ @scalar
+ end
+
+ # Emit a map. The coder will be yielded to the block.
+ def map tag = @tag, style = @style
+ @tag = tag
+ @style = style
+ yield self if block_given?
+ @map
+ end
+
+ # Emit a scalar with +value+ and +tag+
+ def represent_scalar tag, value
+ self.tag = tag
+ self.scalar = value
+ end
+
+ # Emit a sequence with +list+ and +tag+
+ def represent_seq tag, list
+ @tag = tag
+ self.seq = list
+ end
+
+ # Emit a sequence with +map+ and +tag+
+ def represent_map tag, map
+ @tag = tag
+ self.map = map
+ end
+
+ # Emit an arbitrary object +obj+ and +tag+
+ def represent_object tag, obj
+ @tag = tag
+ @type = :object
+ @object = obj
+ end
+
+ # Emit a scalar with +value+
+ def scalar= value
+ @type = :scalar
+ @scalar = value
+ end
+
+ # Emit a map with +value+
+ def map= map
+ @type = :map
+ @map = map
+ end
+
+ def []= k, v
+ @type = :map
+ @map[k] = v
+ end
+ alias :add :[]=
+
+ def [] k
+ @type = :map
+ @map[k]
+ end
+
+ # Emit a sequence of +list+
+ def seq= list
+ @type = :seq
+ @seq = list
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/core_ext.rb b/jni/ruby/ext/psych/lib/psych/core_ext.rb
new file mode 100644
index 0000000..9c8134d
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/core_ext.rb
@@ -0,0 +1,35 @@
+class Object
+ def self.yaml_tag url
+ Psych.add_tag(url, self)
+ end
+
+ # FIXME: rename this to "to_yaml" when syck is removed
+
+ ###
+ # call-seq: to_yaml(options = {})
+ #
+ # Convert an object to YAML. See Psych.dump for more information on the
+ # available +options+.
+ def psych_to_yaml options = {}
+ Psych.dump self, options
+ end
+ remove_method :to_yaml rescue nil
+ alias :to_yaml :psych_to_yaml
+end
+
+class Module
+ def psych_yaml_as url
+ return if caller[0].end_with?('rubytypes.rb')
+ if $VERBOSE
+ warn "#{caller[0]}: yaml_as is deprecated, please use yaml_tag"
+ end
+ Psych.add_tag(url, self)
+ end
+
+ remove_method :yaml_as rescue nil
+ alias :yaml_as :psych_yaml_as
+end
+
+if defined?(::IRB)
+ require 'psych/y'
+end
diff --git a/jni/ruby/ext/psych/lib/psych/deprecated.rb b/jni/ruby/ext/psych/lib/psych/deprecated.rb
new file mode 100644
index 0000000..8c310b3
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/deprecated.rb
@@ -0,0 +1,85 @@
+require 'date'
+
+module Psych
+ DEPRECATED = __FILE__ # :nodoc:
+
+ module DeprecatedMethods # :nodoc:
+ attr_accessor :taguri
+ attr_accessor :to_yaml_style
+ end
+
+ def self.quick_emit thing, opts = {}, &block # :nodoc:
+ warn "#{caller[0]}: YAML.quick_emit is deprecated" if $VERBOSE && !caller[0].start_with?(File.dirname(__FILE__))
+ target = eval 'self', block.binding
+ target.extend DeprecatedMethods
+ metaclass = class << target; self; end
+ metaclass.send(:define_method, :encode_with) do |coder|
+ target.taguri = coder.tag
+ target.to_yaml_style = coder.style
+ block.call coder
+ end
+ target.psych_to_yaml unless opts[:nodump]
+ end
+
+ # This method is deprecated, use Psych.load_stream instead.
+ def self.load_documents yaml, &block
+ if $VERBOSE
+ warn "#{caller[0]}: load_documents is deprecated, use load_stream"
+ end
+ list = load_stream yaml
+ return list unless block_given?
+ list.each(&block)
+ end
+
+ def self.detect_implicit thing
+ warn "#{caller[0]}: detect_implicit is deprecated" if $VERBOSE
+ return '' unless String === thing
+ return 'null' if '' == thing
+ ss = ScalarScanner.new(ClassLoader.new)
+ ss.tokenize(thing).class.name.downcase
+ end
+
+ def self.add_ruby_type type_tag, &block
+ warn "#{caller[0]}: add_ruby_type is deprecated, use add_domain_type" if $VERBOSE
+ domain = 'ruby.yaml.org,2002'
+ key = ['tag', domain, type_tag].join ':'
+ @domain_types[key] = [key, block]
+ end
+
+ def self.add_private_type type_tag, &block
+ warn "#{caller[0]}: add_private_type is deprecated, use add_domain_type" if $VERBOSE
+ domain = 'x-private'
+ key = [domain, type_tag].join ':'
+ @domain_types[key] = [key, block]
+ end
+
+ def self.tagurize thing
+ warn "#{caller[0]}: add_private_type is deprecated, use add_domain_type" if $VERBOSE
+ return thing unless String === thing
+ "tag:yaml.org,2002:#{thing}"
+ end
+
+ def self.read_type_class type, reference
+ warn "#{caller[0]}: read_type_class is deprecated" if $VERBOSE
+ _, _, type, name = type.split ':', 4
+
+ reference = name.split('::').inject(reference) do |k,n|
+ k.const_get(n.to_sym)
+ end if name
+ [type, reference]
+ end
+
+ def self.object_maker klass, hash
+ warn "#{caller[0]}: object_maker is deprecated" if $VERBOSE
+ klass.allocate.tap do |obj|
+ hash.each { |k,v| obj.instance_variable_set(:"@#{k}", v) }
+ end
+ end
+end
+
+class Object
+ undef :to_yaml_properties rescue nil
+ def to_yaml_properties # :nodoc:
+ instance_variables
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/exception.rb b/jni/ruby/ext/psych/lib/psych/exception.rb
new file mode 100644
index 0000000..ce9d2ca
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/exception.rb
@@ -0,0 +1,13 @@
+module Psych
+ class Exception < RuntimeError
+ end
+
+ class BadAlias < Exception
+ end
+
+ class DisallowedClass < Exception
+ def initialize klass_name
+ super "Tried to load unspecified class: #{klass_name}"
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/handler.rb b/jni/ruby/ext/psych/lib/psych/handler.rb
new file mode 100644
index 0000000..c55afe7
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/handler.rb
@@ -0,0 +1,249 @@
+module Psych
+ ###
+ # Psych::Handler is an abstract base class that defines the events used
+ # when dealing with Psych::Parser. Clients who want to use Psych::Parser
+ # should implement a class that inherits from Psych::Handler and define
+ # events that they can handle.
+ #
+ # Psych::Handler defines all events that Psych::Parser can possibly send to
+ # event handlers.
+ #
+ # See Psych::Parser for more details
+ class Handler
+ ###
+ # Configuration options for dumping YAML.
+ class DumperOptions
+ attr_accessor :line_width, :indentation, :canonical
+
+ def initialize
+ @line_width = 0
+ @indentation = 2
+ @canonical = false
+ end
+ end
+
+ # Default dumping options
+ OPTIONS = DumperOptions.new
+
+ # Events that a Handler should respond to.
+ EVENTS = [ :alias,
+ :empty,
+ :end_document,
+ :end_mapping,
+ :end_sequence,
+ :end_stream,
+ :scalar,
+ :start_document,
+ :start_mapping,
+ :start_sequence,
+ :start_stream ]
+
+ ###
+ # Called with +encoding+ when the YAML stream starts. This method is
+ # called once per stream. A stream may contain multiple documents.
+ #
+ # See the constants in Psych::Parser for the possible values of +encoding+.
+ def start_stream encoding
+ end
+
+ ###
+ # Called when the document starts with the declared +version+,
+ # +tag_directives+, if the document is +implicit+.
+ #
+ # +version+ will be an array of integers indicating the YAML version being
+ # dealt with, +tag_directives+ is a list of tuples indicating the prefix
+ # and suffix of each tag, and +implicit+ is a boolean indicating whether
+ # the document is started implicitly.
+ #
+ # === Example
+ #
+ # Given the following YAML:
+ #
+ # %YAML 1.1
+ # %TAG ! tag:tenderlovemaking.com,2009:
+ # --- !squee
+ #
+ # The parameters for start_document must be this:
+ #
+ # version # => [1, 1]
+ # tag_directives # => [["!", "tag:tenderlovemaking.com,2009:"]]
+ # implicit # => false
+ def start_document version, tag_directives, implicit
+ end
+
+ ###
+ # Called with the document ends. +implicit+ is a boolean value indicating
+ # whether or not the document has an implicit ending.
+ #
+ # === Example
+ #
+ # Given the following YAML:
+ #
+ # ---
+ # hello world
+ #
+ # +implicit+ will be true. Given this YAML:
+ #
+ # ---
+ # hello world
+ # ...
+ #
+ # +implicit+ will be false.
+ def end_document implicit
+ end
+
+ ###
+ # Called when an alias is found to +anchor+. +anchor+ will be the name
+ # of the anchor found.
+ #
+ # === Example
+ #
+ # Here we have an example of an array that references itself in YAML:
+ #
+ # --- &ponies
+ # - first element
+ # - *ponies
+ #
+ # &ponies is the achor, *ponies is the alias. In this case, alias is
+ # called with "ponies".
+ def alias anchor
+ end
+
+ ###
+ # Called when a scalar +value+ is found. The scalar may have an
+ # +anchor+, a +tag+, be implicitly +plain+ or implicitly +quoted+
+ #
+ # +value+ is the string value of the scalar
+ # +anchor+ is an associated anchor or nil
+ # +tag+ is an associated tag or nil
+ # +plain+ is a boolean value
+ # +quoted+ is a boolean value
+ # +style+ is an integer idicating the string style
+ #
+ # See the constants in Psych::Nodes::Scalar for the possible values of
+ # +style+
+ #
+ # === Example
+ #
+ # Here is a YAML document that exercises most of the possible ways this
+ # method can be called:
+ #
+ # ---
+ # - !str "foo"
+ # - &anchor fun
+ # - many
+ # lines
+ # - |
+ # many
+ # newlines
+ #
+ # The above YAML document contains a list with four strings. Here are
+ # the parameters sent to this method in the same order:
+ #
+ # # value anchor tag plain quoted style
+ # ["foo", nil, "!str", false, false, 3 ]
+ # ["fun", "anchor", nil, true, false, 1 ]
+ # ["many lines", nil, nil, true, false, 1 ]
+ # ["many\nnewlines\n", nil, nil, false, true, 4 ]
+ #
+ def scalar value, anchor, tag, plain, quoted, style
+ end
+
+ ###
+ # Called when a sequence is started.
+ #
+ # +anchor+ is the anchor associated with the sequence or nil.
+ # +tag+ is the tag associated with the sequence or nil.
+ # +implicit+ a boolean indicating whether or not the sequence was implicitly
+ # started.
+ # +style+ is an integer indicating the list style.
+ #
+ # See the constants in Psych::Nodes::Sequence for the possible values of
+ # +style+.
+ #
+ # === Example
+ #
+ # Here is a YAML document that exercises most of the possible ways this
+ # method can be called:
+ #
+ # ---
+ # - !!seq [
+ # a
+ # ]
+ # - &pewpew
+ # - b
+ #
+ # The above YAML document consists of three lists, an outer list that
+ # contains two inner lists. Here is a matrix of the parameters sent
+ # to represent these lists:
+ #
+ # # anchor tag implicit style
+ # [nil, nil, true, 1 ]
+ # [nil, "tag:yaml.org,2002:seq", false, 2 ]
+ # ["pewpew", nil, true, 1 ]
+
+ def start_sequence anchor, tag, implicit, style
+ end
+
+ ###
+ # Called when a sequence ends.
+ def end_sequence
+ end
+
+ ###
+ # Called when a map starts.
+ #
+ # +anchor+ is the anchor associated with the map or +nil+.
+ # +tag+ is the tag associated with the map or +nil+.
+ # +implicit+ is a boolean indicating whether or not the map was implicitly
+ # started.
+ # +style+ is an integer indicating the mapping style.
+ #
+ # See the constants in Psych::Nodes::Mapping for the possible values of
+ # +style+.
+ #
+ # === Example
+ #
+ # Here is a YAML document that exercises most of the possible ways this
+ # method can be called:
+ #
+ # ---
+ # k: !!map { hello: world }
+ # v: &pewpew
+ # hello: world
+ #
+ # The above YAML document consists of three maps, an outer map that contains
+ # two inner maps. Below is a matrix of the parameters sent in order to
+ # represent these three maps:
+ #
+ # # anchor tag implicit style
+ # [nil, nil, true, 1 ]
+ # [nil, "tag:yaml.org,2002:map", false, 2 ]
+ # ["pewpew", nil, true, 1 ]
+
+ def start_mapping anchor, tag, implicit, style
+ end
+
+ ###
+ # Called when a map ends
+ def end_mapping
+ end
+
+ ###
+ # Called when an empty event happens. (Which, as far as I can tell, is
+ # never).
+ def empty
+ end
+
+ ###
+ # Called when the YAML stream ends
+ def end_stream
+ end
+
+ ###
+ # Is this handler a streaming handler?
+ def streaming?
+ false
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/handlers/document_stream.rb b/jni/ruby/ext/psych/lib/psych/handlers/document_stream.rb
new file mode 100644
index 0000000..e429993
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/handlers/document_stream.rb
@@ -0,0 +1,22 @@
+require 'psych/tree_builder'
+
+module Psych
+ module Handlers
+ class DocumentStream < Psych::TreeBuilder # :nodoc:
+ def initialize &block
+ super
+ @block = block
+ end
+
+ def start_document version, tag_directives, implicit
+ n = Nodes::Document.new version, tag_directives, implicit
+ push n
+ end
+
+ def end_document implicit_end = !streaming?
+ @last.implicit_end = implicit_end
+ @block.call pop
+ end
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/handlers/recorder.rb b/jni/ruby/ext/psych/lib/psych/handlers/recorder.rb
new file mode 100644
index 0000000..4eae62e
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/handlers/recorder.rb
@@ -0,0 +1,39 @@
+require 'psych/handler'
+
+module Psych
+ module Handlers
+ ###
+ # This handler will capture an event and record the event. Recorder events
+ # are available vial Psych::Handlers::Recorder#events.
+ #
+ # For example:
+ #
+ # recorder = Psych::Handlers::Recorder.new
+ # parser = Psych::Parser.new recorder
+ # parser.parse '--- foo'
+ #
+ # recorder.events # => [list of events]
+ #
+ # # Replay the events
+ #
+ # emitter = Psych::Emitter.new $stdout
+ # recorder.events.each do |m, args|
+ # emitter.send m, *args
+ # end
+
+ class Recorder < Psych::Handler
+ attr_reader :events
+
+ def initialize
+ @events = []
+ super
+ end
+
+ EVENTS.each do |event|
+ define_method event do |*args|
+ @events << [event, args]
+ end
+ end
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/json/ruby_events.rb b/jni/ruby/ext/psych/lib/psych/json/ruby_events.rb
new file mode 100644
index 0000000..6b73249
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/json/ruby_events.rb
@@ -0,0 +1,19 @@
+module Psych
+ module JSON
+ module RubyEvents # :nodoc:
+ def visit_Time o
+ formatted = format_time o
+ @emitter.scalar formatted, nil, nil, false, true, Nodes::Scalar::DOUBLE_QUOTED
+ end
+
+ def visit_DateTime o
+ visit_Time o.to_time
+ end
+
+ def visit_String o
+ @emitter.scalar o.to_s, nil, nil, false, true, Nodes::Scalar::DOUBLE_QUOTED
+ end
+ alias :visit_Symbol :visit_String
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/json/stream.rb b/jni/ruby/ext/psych/lib/psych/json/stream.rb
new file mode 100644
index 0000000..fe2a6e9
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/json/stream.rb
@@ -0,0 +1,16 @@
+require 'psych/json/ruby_events'
+require 'psych/json/yaml_events'
+
+module Psych
+ module JSON
+ class Stream < Psych::Visitors::JSONTree
+ include Psych::JSON::RubyEvents
+ include Psych::Streaming
+ extend Psych::Streaming::ClassMethods
+
+ class Emitter < Psych::Stream::Emitter # :nodoc:
+ include Psych::JSON::YAMLEvents
+ end
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/json/tree_builder.rb b/jni/ruby/ext/psych/lib/psych/json/tree_builder.rb
new file mode 100644
index 0000000..b799c93
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/json/tree_builder.rb
@@ -0,0 +1,12 @@
+require 'psych/json/yaml_events'
+
+module Psych
+ module JSON
+ ###
+ # Psych::JSON::TreeBuilder is an event based AST builder. Events are sent
+ # to an instance of Psych::JSON::TreeBuilder and a JSON AST is constructed.
+ class TreeBuilder < Psych::TreeBuilder
+ include Psych::JSON::YAMLEvents
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/json/yaml_events.rb b/jni/ruby/ext/psych/lib/psych/json/yaml_events.rb
new file mode 100644
index 0000000..d054d9b
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/json/yaml_events.rb
@@ -0,0 +1,29 @@
+module Psych
+ module JSON
+ module YAMLEvents # :nodoc:
+ def start_document version, tag_directives, implicit
+ super(version, tag_directives, !streaming?)
+ end
+
+ def end_document implicit_end = !streaming?
+ super(implicit_end)
+ end
+
+ def start_mapping anchor, tag, implicit, style
+ super(anchor, nil, true, Nodes::Mapping::FLOW)
+ end
+
+ def start_sequence anchor, tag, implicit, style
+ super(anchor, nil, true, Nodes::Sequence::FLOW)
+ end
+
+ def scalar value, anchor, tag, plain, quoted, style
+ if "tag:yaml.org,2002:null" == tag
+ super('null', nil, nil, true, false, Nodes::Scalar::PLAIN)
+ else
+ super
+ end
+ end
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/nodes.rb b/jni/ruby/ext/psych/lib/psych/nodes.rb
new file mode 100644
index 0000000..f3b33fe
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/nodes.rb
@@ -0,0 +1,77 @@
+require 'psych/nodes/node'
+require 'psych/nodes/stream'
+require 'psych/nodes/document'
+require 'psych/nodes/sequence'
+require 'psych/nodes/scalar'
+require 'psych/nodes/mapping'
+require 'psych/nodes/alias'
+
+module Psych
+ ###
+ # = Overview
+ #
+ # When using Psych.load to deserialize a YAML document, the document is
+ # translated to an intermediary AST. That intermediary AST is then
+ # translated in to a Ruby object graph.
+ #
+ # In the opposite direction, when using Psych.dump, the Ruby object graph is
+ # translated to an intermediary AST which is then converted to a YAML
+ # document.
+ #
+ # Psych::Nodes contains all of the classes that make up the nodes of a YAML
+ # AST. You can manually build an AST and use one of the visitors (see
+ # Psych::Visitors) to convert that AST to either a YAML document or to a
+ # Ruby object graph.
+ #
+ # Here is an example of building an AST that represents a list with one
+ # scalar:
+ #
+ # # Create our nodes
+ # stream = Psych::Nodes::Stream.new
+ # doc = Psych::Nodes::Document.new
+ # seq = Psych::Nodes::Sequence.new
+ # scalar = Psych::Nodes::Scalar.new('foo')
+ #
+ # # Build up our tree
+ # stream.children << doc
+ # doc.children << seq
+ # seq.children << scalar
+ #
+ # The stream is the root of the tree. We can then convert the tree to YAML:
+ #
+ # stream.to_yaml => "---\n- foo\n"
+ #
+ # Or convert it to Ruby:
+ #
+ # stream.to_ruby => [["foo"]]
+ #
+ # == YAML AST Requirements
+ #
+ # A valid YAML AST *must* have one Psych::Nodes::Stream at the root. A
+ # Psych::Nodes::Stream node must have 1 or more Psych::Nodes::Document nodes
+ # as children.
+ #
+ # Psych::Nodes::Document nodes must have one and *only* one child. That child
+ # may be one of:
+ #
+ # * Psych::Nodes::Sequence
+ # * Psych::Nodes::Mapping
+ # * Psych::Nodes::Scalar
+ #
+ # Psych::Nodes::Sequence and Psych::Nodes::Mapping nodes may have many
+ # children, but Psych::Nodes::Mapping nodes should have an even number of
+ # children.
+ #
+ # All of these are valid children for Psych::Nodes::Sequence and
+ # Psych::Nodes::Mapping nodes:
+ #
+ # * Psych::Nodes::Sequence
+ # * Psych::Nodes::Mapping
+ # * Psych::Nodes::Scalar
+ # * Psych::Nodes::Alias
+ #
+ # Psych::Nodes::Scalar and Psych::Nodes::Alias are both terminal nodes and
+ # should not have any children.
+ module Nodes
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/nodes/alias.rb b/jni/ruby/ext/psych/lib/psych/nodes/alias.rb
new file mode 100644
index 0000000..5bd4df1
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/nodes/alias.rb
@@ -0,0 +1,18 @@
+module Psych
+ module Nodes
+ ###
+ # This class represents a {YAML Alias}[http://yaml.org/spec/1.1/#alias].
+ # It points to an +anchor+.
+ #
+ # A Psych::Nodes::Alias is a terminal node and may have no children.
+ class Alias < Psych::Nodes::Node
+ # The anchor this alias links to
+ attr_accessor :anchor
+
+ # Create a new Alias that points to an +anchor+
+ def initialize anchor
+ @anchor = anchor
+ end
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/nodes/document.rb b/jni/ruby/ext/psych/lib/psych/nodes/document.rb
new file mode 100644
index 0000000..32014d6
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/nodes/document.rb
@@ -0,0 +1,60 @@
+module Psych
+ module Nodes
+ ###
+ # This represents a YAML Document. This node must be a child of
+ # Psych::Nodes::Stream. A Psych::Nodes::Document must have one child,
+ # and that child may be one of the following:
+ #
+ # * Psych::Nodes::Sequence
+ # * Psych::Nodes::Mapping
+ # * Psych::Nodes::Scalar
+ class Document < Psych::Nodes::Node
+ # The version of the YAML document
+ attr_accessor :version
+
+ # A list of tag directives for this document
+ attr_accessor :tag_directives
+
+ # Was this document implicitly created?
+ attr_accessor :implicit
+
+ # Is the end of the document implicit?
+ attr_accessor :implicit_end
+
+ ###
+ # Create a new Psych::Nodes::Document object.
+ #
+ # +version+ is a list indicating the YAML version.
+ # +tags_directives+ is a list of tag directive declarations
+ # +implicit+ is a flag indicating whether the document will be implicitly
+ # started.
+ #
+ # == Example:
+ # This creates a YAML document object that represents a YAML 1.1 document
+ # with one tag directive, and has an implicit start:
+ #
+ # Psych::Nodes::Document.new(
+ # [1,1],
+ # [["!", "tag:tenderlovemaking.com,2009:"]],
+ # true
+ # )
+ #
+ # == See Also
+ # See also Psych::Handler#start_document
+ def initialize version = [], tag_directives = [], implicit = false
+ super()
+ @version = version
+ @tag_directives = tag_directives
+ @implicit = implicit
+ @implicit_end = true
+ end
+
+ ###
+ # Returns the root node. A Document may only have one root node:
+ # http://yaml.org/spec/1.1/#id898031
+ def root
+ children.first
+ end
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/nodes/mapping.rb b/jni/ruby/ext/psych/lib/psych/nodes/mapping.rb
new file mode 100644
index 0000000..5ba95ce
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/nodes/mapping.rb
@@ -0,0 +1,56 @@
+module Psych
+ module Nodes
+ ###
+ # This class represents a {YAML Mapping}[http://yaml.org/spec/1.1/#mapping].
+ #
+ # A Psych::Nodes::Mapping node may have 0 or more children, but must have
+ # an even number of children. Here are the valid children a
+ # Psych::Nodes::Mapping node may have:
+ #
+ # * Psych::Nodes::Sequence
+ # * Psych::Nodes::Mapping
+ # * Psych::Nodes::Scalar
+ # * Psych::Nodes::Alias
+ class Mapping < Psych::Nodes::Node
+ # Any Map Style
+ ANY = 0
+
+ # Block Map Style
+ BLOCK = 1
+
+ # Flow Map Style
+ FLOW = 2
+
+ # The optional anchor for this mapping
+ attr_accessor :anchor
+
+ # The optional tag for this mapping
+ attr_accessor :tag
+
+ # Is this an implicit mapping?
+ attr_accessor :implicit
+
+ # The style of this mapping
+ attr_accessor :style
+
+ ###
+ # Create a new Psych::Nodes::Mapping object.
+ #
+ # +anchor+ is the anchor associated with the map or +nil+.
+ # +tag+ is the tag associated with the map or +nil+.
+ # +implicit+ is a boolean indicating whether or not the map was implicitly
+ # started.
+ # +style+ is an integer indicating the mapping style.
+ #
+ # == See Also
+ # See also Psych::Handler#start_mapping
+ def initialize anchor = nil, tag = nil, implicit = true, style = BLOCK
+ super()
+ @anchor = anchor
+ @tag = tag
+ @implicit = implicit
+ @style = style
+ end
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/nodes/node.rb b/jni/ruby/ext/psych/lib/psych/nodes/node.rb
new file mode 100644
index 0000000..83233a6
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/nodes/node.rb
@@ -0,0 +1,55 @@
+require 'stringio'
+require 'psych/class_loader'
+require 'psych/scalar_scanner'
+
+module Psych
+ module Nodes
+ ###
+ # The base class for any Node in a YAML parse tree. This class should
+ # never be instantiated.
+ class Node
+ include Enumerable
+
+ # The children of this node
+ attr_reader :children
+
+ # An associated tag
+ attr_reader :tag
+
+ # Create a new Psych::Nodes::Node
+ def initialize
+ @children = []
+ end
+
+ ###
+ # Iterate over each node in the tree. Yields each node to +block+ depth
+ # first.
+ def each &block
+ return enum_for :each unless block_given?
+ Visitors::DepthFirst.new(block).accept self
+ end
+
+ ###
+ # Convert this node to Ruby.
+ #
+ # See also Psych::Visitors::ToRuby
+ def to_ruby
+ Visitors::ToRuby.create.accept(self)
+ end
+ alias :transform :to_ruby
+
+ ###
+ # Convert this node to YAML.
+ #
+ # See also Psych::Visitors::Emitter
+ def yaml io = nil, options = {}
+ real_io = io || StringIO.new(''.encode('utf-8'))
+
+ Visitors::Emitter.new(real_io, options).accept self
+ return real_io.string unless io
+ io
+ end
+ alias :to_yaml :yaml
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/nodes/scalar.rb b/jni/ruby/ext/psych/lib/psych/nodes/scalar.rb
new file mode 100644
index 0000000..1b1b25b
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/nodes/scalar.rb
@@ -0,0 +1,67 @@
+module Psych
+ module Nodes
+ ###
+ # This class represents a {YAML Scalar}[http://yaml.org/spec/1.1/#id858081].
+ #
+ # This node type is a terminal node and should not have any children.
+ class Scalar < Psych::Nodes::Node
+ # Any style scalar, the emitter chooses
+ ANY = 0
+
+ # Plain scalar style
+ PLAIN = 1
+
+ # Single quoted style
+ SINGLE_QUOTED = 2
+
+ # Double quoted style
+ DOUBLE_QUOTED = 3
+
+ # Literal style
+ LITERAL = 4
+
+ # Folded style
+ FOLDED = 5
+
+ # The scalar value
+ attr_accessor :value
+
+ # The anchor value (if there is one)
+ attr_accessor :anchor
+
+ # The tag value (if there is one)
+ attr_accessor :tag
+
+ # Is this a plain scalar?
+ attr_accessor :plain
+
+ # Is this scalar quoted?
+ attr_accessor :quoted
+
+ # The style of this scalar
+ attr_accessor :style
+
+ ###
+ # Create a new Psych::Nodes::Scalar object.
+ #
+ # +value+ is the string value of the scalar
+ # +anchor+ is an associated anchor or nil
+ # +tag+ is an associated tag or nil
+ # +plain+ is a boolean value
+ # +quoted+ is a boolean value
+ # +style+ is an integer idicating the string style
+ #
+ # == See Also
+ #
+ # See also Psych::Handler#scalar
+ def initialize value, anchor = nil, tag = nil, plain = true, quoted = false, style = ANY
+ @value = value
+ @anchor = anchor
+ @tag = tag
+ @plain = plain
+ @quoted = quoted
+ @style = style
+ end
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/nodes/sequence.rb b/jni/ruby/ext/psych/lib/psych/nodes/sequence.rb
new file mode 100644
index 0000000..7e907fe
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/nodes/sequence.rb
@@ -0,0 +1,81 @@
+module Psych
+ module Nodes
+ ###
+ # This class represents a
+ # {YAML sequence}[http://yaml.org/spec/1.1/#sequence/syntax].
+ #
+ # A YAML sequence is basically a list, and looks like this:
+ #
+ # %YAML 1.1
+ # ---
+ # - I am
+ # - a Sequence
+ #
+ # A YAML sequence may have an anchor like this:
+ #
+ # %YAML 1.1
+ # ---
+ # &A [
+ # "This sequence",
+ # "has an anchor"
+ # ]
+ #
+ # A YAML sequence may also have a tag like this:
+ #
+ # %YAML 1.1
+ # ---
+ # !!seq [
+ # "This sequence",
+ # "has a tag"
+ # ]
+ #
+ # This class represents a sequence in a YAML document. A
+ # Psych::Nodes::Sequence node may have 0 or more children. Valid children
+ # for this node are:
+ #
+ # * Psych::Nodes::Sequence
+ # * Psych::Nodes::Mapping
+ # * Psych::Nodes::Scalar
+ # * Psych::Nodes::Alias
+ class Sequence < Psych::Nodes::Node
+ # Any Styles, emitter chooses
+ ANY = 0
+
+ # Block style sequence
+ BLOCK = 1
+
+ # Flow style sequence
+ FLOW = 2
+
+ # The anchor for this sequence (if any)
+ attr_accessor :anchor
+
+ # The tag name for this sequence (if any)
+ attr_accessor :tag
+
+ # Is this sequence started implicitly?
+ attr_accessor :implicit
+
+ # The sequence style used
+ attr_accessor :style
+
+ ###
+ # Create a new object representing a YAML sequence.
+ #
+ # +anchor+ is the anchor associated with the sequence or nil.
+ # +tag+ is the tag associated with the sequence or nil.
+ # +implicit+ a boolean indicating whether or not the sequence was
+ # implicitly started.
+ # +style+ is an integer indicating the list style.
+ #
+ # See Psych::Handler#start_sequence
+ def initialize anchor = nil, tag = nil, implicit = true, style = BLOCK
+ super()
+ @anchor = anchor
+ @tag = tag
+ @implicit = implicit
+ @style = style
+ end
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/nodes/stream.rb b/jni/ruby/ext/psych/lib/psych/nodes/stream.rb
new file mode 100644
index 0000000..7cf5e03
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/nodes/stream.rb
@@ -0,0 +1,37 @@
+module Psych
+ module Nodes
+ ###
+ # Represents a YAML stream. This is the root node for any YAML parse
+ # tree. This node must have one or more child nodes. The only valid
+ # child node for a Psych::Nodes::Stream node is Psych::Nodes::Document.
+ class Stream < Psych::Nodes::Node
+
+ # Encodings supported by Psych (and libyaml)
+
+ # Any encoding
+ ANY = Psych::Parser::ANY
+
+ # UTF-8 encoding
+ UTF8 = Psych::Parser::UTF8
+
+ # UTF-16LE encoding
+ UTF16LE = Psych::Parser::UTF16LE
+
+ # UTF-16BE encoding
+ UTF16BE = Psych::Parser::UTF16BE
+
+ # The encoding used for this stream
+ attr_accessor :encoding
+
+ ###
+ # Create a new Psych::Nodes::Stream node with an +encoding+ that
+ # defaults to Psych::Nodes::Stream::UTF8.
+ #
+ # See also Psych::Handler#start_stream
+ def initialize encoding = UTF8
+ super()
+ @encoding = encoding
+ end
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/omap.rb b/jni/ruby/ext/psych/lib/psych/omap.rb
new file mode 100644
index 0000000..6286270
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/omap.rb
@@ -0,0 +1,4 @@
+module Psych
+ class Omap < ::Hash
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/parser.rb b/jni/ruby/ext/psych/lib/psych/parser.rb
new file mode 100644
index 0000000..84085f1
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/parser.rb
@@ -0,0 +1,51 @@
+module Psych
+ ###
+ # YAML event parser class. This class parses a YAML document and calls
+ # events on the handler that is passed to the constructor. The events can
+ # be used for things such as constructing a YAML AST or deserializing YAML
+ # documents. It can even be fed back to Psych::Emitter to emit the same
+ # document that was parsed.
+ #
+ # See Psych::Handler for documentation on the events that Psych::Parser emits.
+ #
+ # Here is an example that prints out ever scalar found in a YAML document:
+ #
+ # # Handler for detecting scalar values
+ # class ScalarHandler < Psych::Handler
+ # def scalar value, anchor, tag, plain, quoted, style
+ # puts value
+ # end
+ # end
+ #
+ # parser = Psych::Parser.new(ScalarHandler.new)
+ # parser.parse(yaml_document)
+ #
+ # Here is an example that feeds the parser back in to Psych::Emitter. The
+ # YAML document is read from STDIN and written back out to STDERR:
+ #
+ # parser = Psych::Parser.new(Psych::Emitter.new($stderr))
+ # parser.parse($stdin)
+ #
+ # Psych uses Psych::Parser in combination with Psych::TreeBuilder to
+ # construct an AST of the parsed YAML document.
+
+ class Parser
+ class Mark < Struct.new(:index, :line, :column)
+ end
+
+ # The handler on which events will be called
+ attr_accessor :handler
+
+ # Set the encoding for this parser to +encoding+
+ attr_writer :external_encoding
+
+ ###
+ # Creates a new Psych::Parser instance with +handler+. YAML events will
+ # be called on +handler+. See Psych::Parser for more details.
+
+ def initialize handler = Handler.new
+ @handler = handler
+ @external_encoding = ANY
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/scalar_scanner.rb b/jni/ruby/ext/psych/lib/psych/scalar_scanner.rb
new file mode 100644
index 0000000..9300790
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/scalar_scanner.rb
@@ -0,0 +1,149 @@
+require 'strscan'
+
+module Psych
+ ###
+ # Scan scalars for built in types
+ class ScalarScanner
+ # Taken from http://yaml.org/type/timestamp.html
+ TIME = /^-?\d{4}-\d{1,2}-\d{1,2}(?:[Tt]|\s+)\d{1,2}:\d\d:\d\d(?:\.\d*)?(?:\s*(?:Z|[-+]\d{1,2}:?(?:\d\d)?))?$/
+
+ # Taken from http://yaml.org/type/float.html
+ FLOAT = /^(?:[-+]?([0-9][0-9_,]*)?\.[0-9]*([eE][-+][0-9]+)?(?# base 10)
+ |[-+]?[0-9][0-9_,]*(:[0-5]?[0-9])+\.[0-9_]*(?# base 60)
+ |[-+]?\.(inf|Inf|INF)(?# infinity)
+ |\.(nan|NaN|NAN)(?# not a number))$/x
+
+ # Taken from http://yaml.org/type/int.html
+ INTEGER = /^(?:[-+]?0b[0-1_]+ (?# base 2)
+ |[-+]?0[0-7_]+ (?# base 8)
+ |[-+]?(?:0|[1-9][0-9_]*) (?# base 10)
+ |[-+]?0x[0-9a-fA-F_]+ (?# base 16))$/x
+
+ attr_reader :class_loader
+
+ # Create a new scanner
+ def initialize class_loader
+ @string_cache = {}
+ @symbol_cache = {}
+ @class_loader = class_loader
+ end
+
+ # Tokenize +string+ returning the Ruby object
+ def tokenize string
+ return nil if string.empty?
+ return string if @string_cache.key?(string)
+ return @symbol_cache[string] if @symbol_cache.key?(string)
+
+ case string
+ # Check for a String type, being careful not to get caught by hash keys, hex values, and
+ # special floats (e.g., -.inf).
+ when /^[^\d\.:-]?[A-Za-z_\s!@#\$%\^&\*\(\)\{\}\<\>\|\/\\~;=]+/, /\n/
+ if string.length > 5
+ @string_cache[string] = true
+ return string
+ end
+
+ case string
+ when /^[^ytonf~]/i
+ @string_cache[string] = true
+ string
+ when '~', /^null$/i
+ nil
+ when /^(yes|true|on)$/i
+ true
+ when /^(no|false|off)$/i
+ false
+ else
+ @string_cache[string] = true
+ string
+ end
+ when TIME
+ begin
+ parse_time string
+ rescue ArgumentError
+ string
+ end
+ when /^\d{4}-(?:1[012]|0\d|\d)-(?:[12]\d|3[01]|0\d|\d)$/
+ require 'date'
+ begin
+ class_loader.date.strptime(string, '%Y-%m-%d')
+ rescue ArgumentError
+ string
+ end
+ when /^\.inf$/i
+ Float::INFINITY
+ when /^-\.inf$/i
+ -Float::INFINITY
+ when /^\.nan$/i
+ Float::NAN
+ when /^:./
+ if string =~ /^:(["'])(.*)\1/
+ @symbol_cache[string] = class_loader.symbolize($2.sub(/^:/, ''))
+ else
+ @symbol_cache[string] = class_loader.symbolize(string.sub(/^:/, ''))
+ end
+ when /^[-+]?[0-9][0-9_]*(:[0-5]?[0-9])+$/
+ i = 0
+ string.split(':').each_with_index do |n,e|
+ i += (n.to_i * 60 ** (e - 2).abs)
+ end
+ i
+ when /^[-+]?[0-9][0-9_]*(:[0-5]?[0-9])+\.[0-9_]*$/
+ i = 0
+ string.split(':').each_with_index do |n,e|
+ i += (n.to_f * 60 ** (e - 2).abs)
+ end
+ i
+ when FLOAT
+ if string =~ /\A[-+]?\.\Z/
+ @string_cache[string] = true
+ string
+ else
+ Float(string.gsub(/[,_]|\.$/, ''))
+ end
+ else
+ int = parse_int string.gsub(/[,_]/, '')
+ return int if int
+
+ @string_cache[string] = true
+ string
+ end
+ end
+
+ ###
+ # Parse and return an int from +string+
+ def parse_int string
+ return unless INTEGER === string
+ Integer(string)
+ end
+
+ ###
+ # Parse and return a Time from +string+
+ def parse_time string
+ klass = class_loader.load 'Time'
+
+ date, time = *(string.split(/[ tT]/, 2))
+ (yy, m, dd) = date.match(/^(-?\d{4})-(\d{1,2})-(\d{1,2})/).captures.map { |x| x.to_i }
+ md = time.match(/(\d+:\d+:\d+)(?:\.(\d*))?\s*(Z|[-+]\d+(:\d\d)?)?/)
+
+ (hh, mm, ss) = md[1].split(':').map { |x| x.to_i }
+ us = (md[2] ? Rational("0.#{md[2]}") : 0) * 1000000
+
+ time = klass.utc(yy, m, dd, hh, mm, ss, us)
+
+ return time if 'Z' == md[3]
+ return klass.at(time.to_i, us) unless md[3]
+
+ tz = md[3].match(/^([+\-]?\d{1,2})\:?(\d{1,2})?$/)[1..-1].compact.map { |digit| Integer(digit, 10) }
+ offset = tz.first * 3600
+
+ if offset < 0
+ offset -= ((tz[1] || 0) * 60)
+ else
+ offset += ((tz[1] || 0) * 60)
+ end
+
+ klass.at((time - offset).to_i, us)
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/set.rb b/jni/ruby/ext/psych/lib/psych/set.rb
new file mode 100644
index 0000000..6793a8e
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/set.rb
@@ -0,0 +1,4 @@
+module Psych
+ class Set < ::Hash
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/stream.rb b/jni/ruby/ext/psych/lib/psych/stream.rb
new file mode 100644
index 0000000..88c4c4c
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/stream.rb
@@ -0,0 +1,37 @@
+module Psych
+ ###
+ # Psych::Stream is a streaming YAML emitter. It will not buffer your YAML,
+ # but send it straight to an IO.
+ #
+ # Here is an example use:
+ #
+ # stream = Psych::Stream.new($stdout)
+ # stream.start
+ # stream.push({:foo => 'bar'})
+ # stream.finish
+ #
+ # YAML will be immediately emitted to $stdout with no buffering.
+ #
+ # Psych::Stream#start will take a block and ensure that Psych::Stream#finish
+ # is called, so you can do this form:
+ #
+ # stream = Psych::Stream.new($stdout)
+ # stream.start do |em|
+ # em.push(:foo => 'bar')
+ # end
+ #
+ class Stream < Psych::Visitors::YAMLTree
+ class Emitter < Psych::Emitter # :nodoc:
+ def end_document implicit_end = !streaming?
+ super
+ end
+
+ def streaming?
+ true
+ end
+ end
+
+ include Psych::Streaming
+ extend Psych::Streaming::ClassMethods
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/streaming.rb b/jni/ruby/ext/psych/lib/psych/streaming.rb
new file mode 100644
index 0000000..9d94eb5
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/streaming.rb
@@ -0,0 +1,27 @@
+module Psych
+ module Streaming
+ module ClassMethods
+ ###
+ # Create a new streaming emitter. Emitter will print to +io+. See
+ # Psych::Stream for an example.
+ def new io
+ emitter = const_get(:Emitter).new(io)
+ class_loader = ClassLoader.new
+ ss = ScalarScanner.new class_loader
+ super(emitter, ss, {})
+ end
+ end
+
+ ###
+ # Start streaming using +encoding+
+ def start encoding = Nodes::Stream::UTF8
+ super.tap { yield self if block_given? }
+ ensure
+ finish if block_given?
+ end
+
+ private
+ def register target, obj
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/syntax_error.rb b/jni/ruby/ext/psych/lib/psych/syntax_error.rb
new file mode 100644
index 0000000..e200ef0
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/syntax_error.rb
@@ -0,0 +1,21 @@
+require 'psych/exception'
+
+module Psych
+ class SyntaxError < Psych::Exception
+ attr_reader :file, :line, :column, :offset, :problem, :context
+
+ def initialize file, line, col, offset, problem, context
+ err = [problem, context].compact.join ' '
+ filename = file || '<unknown>'
+ message = "(%s): %s at line %d column %d" % [filename, err, line, col]
+
+ @file = file
+ @line = line
+ @column = col
+ @offset = offset
+ @problem = problem
+ @context = context
+ super(message)
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/tree_builder.rb b/jni/ruby/ext/psych/lib/psych/tree_builder.rb
new file mode 100644
index 0000000..c8f3447
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/tree_builder.rb
@@ -0,0 +1,96 @@
+require 'psych/handler'
+
+module Psych
+ ###
+ # This class works in conjunction with Psych::Parser to build an in-memory
+ # parse tree that represents a YAML document.
+ #
+ # == Example
+ #
+ # parser = Psych::Parser.new Psych::TreeBuilder.new
+ # parser.parse('--- foo')
+ # tree = parser.handler.root
+ #
+ # See Psych::Handler for documentation on the event methods used in this
+ # class.
+ class TreeBuilder < Psych::Handler
+ # Returns the root node for the built tree
+ attr_reader :root
+
+ # Create a new TreeBuilder instance
+ def initialize
+ @stack = []
+ @last = nil
+ @root = nil
+ end
+
+ %w{
+ Sequence
+ Mapping
+ }.each do |node|
+ class_eval %{
+ def start_#{node.downcase}(anchor, tag, implicit, style)
+ n = Nodes::#{node}.new(anchor, tag, implicit, style)
+ @last.children << n
+ push n
+ end
+
+ def end_#{node.downcase}
+ pop
+ end
+ }
+ end
+
+ ###
+ # Handles start_document events with +version+, +tag_directives+,
+ # and +implicit+ styling.
+ #
+ # See Psych::Handler#start_document
+ def start_document version, tag_directives, implicit
+ n = Nodes::Document.new version, tag_directives, implicit
+ @last.children << n
+ push n
+ end
+
+ ###
+ # Handles end_document events with +version+, +tag_directives+,
+ # and +implicit+ styling.
+ #
+ # See Psych::Handler#start_document
+ def end_document implicit_end = !streaming?
+ @last.implicit_end = implicit_end
+ pop
+ end
+
+ def start_stream encoding
+ @root = Nodes::Stream.new(encoding)
+ push @root
+ end
+
+ def end_stream
+ pop
+ end
+
+ def scalar value, anchor, tag, plain, quoted, style
+ s = Nodes::Scalar.new(value,anchor,tag,plain,quoted,style)
+ @last.children << s
+ s
+ end
+
+ def alias anchor
+ @last.children << Nodes::Alias.new(anchor)
+ end
+
+ private
+ def push value
+ @stack.push value
+ @last = value
+ end
+
+ def pop
+ x = @stack.pop
+ @last = @stack.last
+ x
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/visitors.rb b/jni/ruby/ext/psych/lib/psych/visitors.rb
new file mode 100644
index 0000000..cc98b10
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/visitors.rb
@@ -0,0 +1,6 @@
+require 'psych/visitors/visitor'
+require 'psych/visitors/to_ruby'
+require 'psych/visitors/emitter'
+require 'psych/visitors/yaml_tree'
+require 'psych/visitors/json_tree'
+require 'psych/visitors/depth_first'
diff --git a/jni/ruby/ext/psych/lib/psych/visitors/depth_first.rb b/jni/ruby/ext/psych/lib/psych/visitors/depth_first.rb
new file mode 100644
index 0000000..c6eb814
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/visitors/depth_first.rb
@@ -0,0 +1,26 @@
+module Psych
+ module Visitors
+ class DepthFirst < Psych::Visitors::Visitor
+ def initialize block
+ @block = block
+ end
+
+ private
+
+ def nary o
+ o.children.each { |x| visit x }
+ @block.call o
+ end
+ alias :visit_Psych_Nodes_Stream :nary
+ alias :visit_Psych_Nodes_Document :nary
+ alias :visit_Psych_Nodes_Sequence :nary
+ alias :visit_Psych_Nodes_Mapping :nary
+
+ def terminal o
+ @block.call o
+ end
+ alias :visit_Psych_Nodes_Scalar :terminal
+ alias :visit_Psych_Nodes_Alias :terminal
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/visitors/emitter.rb b/jni/ruby/ext/psych/lib/psych/visitors/emitter.rb
new file mode 100644
index 0000000..c886e50
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/visitors/emitter.rb
@@ -0,0 +1,51 @@
+module Psych
+ module Visitors
+ class Emitter < Psych::Visitors::Visitor
+ def initialize io, options = {}
+ opts = [:indentation, :canonical, :line_width].find_all { |opt|
+ options.key?(opt)
+ }
+
+ if opts.empty?
+ @handler = Psych::Emitter.new io
+ else
+ du = Handler::DumperOptions.new
+ opts.each { |option| du.send :"#{option}=", options[option] }
+ @handler = Psych::Emitter.new io, du
+ end
+ end
+
+ def visit_Psych_Nodes_Stream o
+ @handler.start_stream o.encoding
+ o.children.each { |c| accept c }
+ @handler.end_stream
+ end
+
+ def visit_Psych_Nodes_Document o
+ @handler.start_document o.version, o.tag_directives, o.implicit
+ o.children.each { |c| accept c }
+ @handler.end_document o.implicit_end
+ end
+
+ def visit_Psych_Nodes_Scalar o
+ @handler.scalar o.value, o.anchor, o.tag, o.plain, o.quoted, o.style
+ end
+
+ def visit_Psych_Nodes_Sequence o
+ @handler.start_sequence o.anchor, o.tag, o.implicit, o.style
+ o.children.each { |c| accept c }
+ @handler.end_sequence
+ end
+
+ def visit_Psych_Nodes_Mapping o
+ @handler.start_mapping o.anchor, o.tag, o.implicit, o.style
+ o.children.each { |c| accept c }
+ @handler.end_mapping
+ end
+
+ def visit_Psych_Nodes_Alias o
+ @handler.alias o.anchor
+ end
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/visitors/json_tree.rb b/jni/ruby/ext/psych/lib/psych/visitors/json_tree.rb
new file mode 100644
index 0000000..0127ac8
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/visitors/json_tree.rb
@@ -0,0 +1,24 @@
+require 'psych/json/ruby_events'
+
+module Psych
+ module Visitors
+ class JSONTree < YAMLTree
+ include Psych::JSON::RubyEvents
+
+ def self.create options = {}
+ emitter = Psych::JSON::TreeBuilder.new
+ class_loader = ClassLoader.new
+ ss = ScalarScanner.new class_loader
+ new(emitter, ss, options)
+ end
+
+ def accept target
+ if target.respond_to?(:encode_with)
+ dump_coder target
+ else
+ send(@dispatch_cache[target.class], target)
+ end
+ end
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/visitors/to_ruby.rb b/jni/ruby/ext/psych/lib/psych/visitors/to_ruby.rb
new file mode 100644
index 0000000..e696ebd
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/visitors/to_ruby.rb
@@ -0,0 +1,389 @@
+require 'psych/scalar_scanner'
+require 'psych/class_loader'
+require 'psych/exception'
+
+unless defined?(Regexp::NOENCODING)
+ Regexp::NOENCODING = 32
+end
+
+module Psych
+ module Visitors
+ ###
+ # This class walks a YAML AST, converting each node to Ruby
+ class ToRuby < Psych::Visitors::Visitor
+ def self.create
+ class_loader = ClassLoader.new
+ scanner = ScalarScanner.new class_loader
+ new(scanner, class_loader)
+ end
+
+ attr_reader :class_loader
+
+ def initialize ss, class_loader
+ super()
+ @st = {}
+ @ss = ss
+ @domain_types = Psych.domain_types
+ @class_loader = class_loader
+ end
+
+ def accept target
+ result = super
+ return result if @domain_types.empty? || !target.tag
+
+ key = target.tag.sub(/^[!\/]*/, '').sub(/(,\d+)\//, '\1:')
+ key = "tag:#{key}" unless key =~ /^(tag:|x-private)/
+
+ if @domain_types.key? key
+ value, block = @domain_types[key]
+ return block.call value, result
+ end
+
+ result
+ end
+
+ def deserialize o
+ if klass = resolve_class(Psych.load_tags[o.tag])
+ instance = klass.allocate
+
+ if instance.respond_to?(:init_with)
+ coder = Psych::Coder.new(o.tag)
+ coder.scalar = o.value
+ instance.init_with coder
+ end
+
+ return instance
+ end
+
+ return o.value if o.quoted
+ return @ss.tokenize(o.value) unless o.tag
+
+ case o.tag
+ when '!binary', 'tag:yaml.org,2002:binary'
+ o.value.unpack('m').first
+ when /^!(?:str|ruby\/string)(?::(.*))?/, 'tag:yaml.org,2002:str'
+ klass = resolve_class($1)
+ if klass
+ klass.allocate.replace o.value
+ else
+ o.value
+ end
+ when '!ruby/object:BigDecimal'
+ require 'bigdecimal'
+ class_loader.big_decimal._load o.value
+ when "!ruby/object:DateTime"
+ class_loader.date_time
+ require 'date'
+ @ss.parse_time(o.value).to_datetime
+ when '!ruby/encoding'
+ ::Encoding.find o.value
+ when "!ruby/object:Complex"
+ class_loader.complex
+ Complex(o.value)
+ when "!ruby/object:Rational"
+ class_loader.rational
+ Rational(o.value)
+ when "!ruby/class", "!ruby/module"
+ resolve_class o.value
+ when "tag:yaml.org,2002:float", "!float"
+ Float(@ss.tokenize(o.value))
+ when "!ruby/regexp"
+ klass = class_loader.regexp
+ o.value =~ /^\/(.*)\/([mixn]*)$/
+ source = $1
+ options = 0
+ lang = nil
+ ($2 || '').split('').each do |option|
+ case option
+ when 'x' then options |= Regexp::EXTENDED
+ when 'i' then options |= Regexp::IGNORECASE
+ when 'm' then options |= Regexp::MULTILINE
+ when 'n' then options |= Regexp::NOENCODING
+ else lang = option
+ end
+ end
+ klass.new(*[source, options, lang].compact)
+ when "!ruby/range"
+ klass = class_loader.range
+ args = o.value.split(/([.]{2,3})/, 2).map { |s|
+ accept Nodes::Scalar.new(s)
+ }
+ args.push(args.delete_at(1) == '...')
+ klass.new(*args)
+ when /^!ruby\/sym(bol)?:?(.*)?$/
+ class_loader.symbolize o.value
+ else
+ @ss.tokenize o.value
+ end
+ end
+ private :deserialize
+
+ def visit_Psych_Nodes_Scalar o
+ register o, deserialize(o)
+ end
+
+ def visit_Psych_Nodes_Sequence o
+ if klass = resolve_class(Psych.load_tags[o.tag])
+ instance = klass.allocate
+
+ if instance.respond_to?(:init_with)
+ coder = Psych::Coder.new(o.tag)
+ coder.seq = o.children.map { |c| accept c }
+ instance.init_with coder
+ end
+
+ return instance
+ end
+
+ case o.tag
+ when nil
+ register_empty(o)
+ when '!omap', 'tag:yaml.org,2002:omap'
+ map = register(o, Psych::Omap.new)
+ o.children.each { |a|
+ map[accept(a.children.first)] = accept a.children.last
+ }
+ map
+ when /^!(?:seq|ruby\/array):(.*)$/
+ klass = resolve_class($1)
+ list = register(o, klass.allocate)
+ o.children.each { |c| list.push accept c }
+ list
+ else
+ register_empty(o)
+ end
+ end
+
+ def visit_Psych_Nodes_Mapping o
+ if Psych.load_tags[o.tag]
+ return revive(resolve_class(Psych.load_tags[o.tag]), o)
+ end
+ return revive_hash(register(o, {}), o) unless o.tag
+
+ case o.tag
+ when /^!ruby\/struct:?(.*)?$/
+ klass = resolve_class($1) if $1
+
+ if klass
+ s = register(o, klass.allocate)
+
+ members = {}
+ struct_members = s.members.map { |x| class_loader.symbolize x }
+ o.children.each_slice(2) do |k,v|
+ member = accept(k)
+ value = accept(v)
+ if struct_members.include?(class_loader.symbolize(member))
+ s.send("#{member}=", value)
+ else
+ members[member.to_s.sub(/^@/, '')] = value
+ end
+ end
+ init_with(s, members, o)
+ else
+ klass = class_loader.struct
+ members = o.children.map { |c| accept c }
+ h = Hash[*members]
+ s = klass.new(*h.map { |k,v|
+ class_loader.symbolize k
+ }).new(*h.map { |k,v| v })
+ register(o, s)
+ s
+ end
+
+ when /^!ruby\/object:?(.*)?$/
+ name = $1 || 'Object'
+
+ if name == 'Complex'
+ class_loader.complex
+ h = Hash[*o.children.map { |c| accept c }]
+ register o, Complex(h['real'], h['image'])
+ elsif name == 'Rational'
+ class_loader.rational
+ h = Hash[*o.children.map { |c| accept c }]
+ register o, Rational(h['numerator'], h['denominator'])
+ elsif name == 'Hash'
+ revive_hash(register(o, {}), o)
+ else
+ obj = revive((resolve_class(name) || class_loader.object), o)
+ obj
+ end
+
+ when /^!(?:str|ruby\/string)(?::(.*))?/, 'tag:yaml.org,2002:str'
+ klass = resolve_class($1)
+ members = {}
+ string = nil
+
+ o.children.each_slice(2) do |k,v|
+ key = accept k
+ value = accept v
+
+ if key == 'str'
+ if klass
+ string = klass.allocate.replace value
+ else
+ string = value
+ end
+ register(o, string)
+ else
+ members[key] = value
+ end
+ end
+ init_with(string, members.map { |k,v| [k.to_s.sub(/^@/, ''),v] }, o)
+ when /^!ruby\/array:(.*)$/
+ klass = resolve_class($1)
+ list = register(o, klass.allocate)
+
+ members = Hash[o.children.map { |c| accept c }.each_slice(2).to_a]
+ list.replace members['internal']
+
+ members['ivars'].each do |ivar, v|
+ list.instance_variable_set ivar, v
+ end
+ list
+
+ when '!ruby/range'
+ klass = class_loader.range
+ h = Hash[*o.children.map { |c| accept c }]
+ register o, klass.new(h['begin'], h['end'], h['excl'])
+
+ when /^!ruby\/exception:?(.*)?$/
+ h = Hash[*o.children.map { |c| accept c }]
+
+ e = build_exception((resolve_class($1) || class_loader.exception),
+ h.delete('message'))
+ init_with(e, h, o)
+
+ when '!set', 'tag:yaml.org,2002:set'
+ set = class_loader.psych_set.new
+ @st[o.anchor] = set if o.anchor
+ o.children.each_slice(2) do |k,v|
+ set[accept(k)] = accept(v)
+ end
+ set
+
+ when /^!map:(.*)$/, /^!ruby\/hash:(.*)$/
+ revive_hash register(o, resolve_class($1).new), o
+
+ when '!omap', 'tag:yaml.org,2002:omap'
+ map = register(o, class_loader.psych_omap.new)
+ o.children.each_slice(2) do |l,r|
+ map[accept(l)] = accept r
+ end
+ map
+
+ when /^!ruby\/marshalable:(.*)$/
+ name = $1
+ klass = resolve_class(name)
+ obj = register(o, klass.allocate)
+
+ if obj.respond_to?(:init_with)
+ init_with(obj, revive_hash({}, o), o)
+ elsif obj.respond_to?(:marshal_load)
+ marshal_data = o.children.map(&method(:accept))
+ obj.marshal_load(marshal_data)
+ obj
+ else
+ raise ArgumentError, "Cannot deserialize #{name}"
+ end
+
+ else
+ revive_hash(register(o, {}), o)
+ end
+ end
+
+ def visit_Psych_Nodes_Document o
+ accept o.root
+ end
+
+ def visit_Psych_Nodes_Stream o
+ o.children.map { |c| accept c }
+ end
+
+ def visit_Psych_Nodes_Alias o
+ @st.fetch(o.anchor) { raise BadAlias, "Unknown alias: #{o.anchor}" }
+ end
+
+ private
+ def register node, object
+ @st[node.anchor] = object if node.anchor
+ object
+ end
+
+ def register_empty object
+ list = register(object, [])
+ object.children.each { |c| list.push accept c }
+ list
+ end
+
+ def revive_hash hash, o
+ o.children.each_slice(2) { |k,v|
+ key = accept(k)
+ val = accept(v)
+
+ if key == '<<' && k.tag != "tag:yaml.org,2002:str"
+ case v
+ when Nodes::Alias, Nodes::Mapping
+ begin
+ hash.merge! val
+ rescue TypeError
+ hash[key] = val
+ end
+ when Nodes::Sequence
+ begin
+ h = {}
+ val.reverse_each do |value|
+ h.merge! value
+ end
+ hash.merge! h
+ rescue TypeError
+ hash[key] = val
+ end
+ else
+ hash[key] = val
+ end
+ else
+ hash[key] = val
+ end
+
+ }
+ hash
+ end
+
+ def merge_key hash, key, val
+ end
+
+ def revive klass, node
+ s = register(node, klass.allocate)
+ init_with(s, revive_hash({}, node), node)
+ end
+
+ def init_with o, h, node
+ c = Psych::Coder.new(node.tag)
+ c.map = h
+
+ if o.respond_to?(:init_with)
+ o.init_with c
+ elsif o.respond_to?(:yaml_initialize)
+ if $VERBOSE
+ warn "Implementing #{o.class}#yaml_initialize is deprecated, please implement \"init_with(coder)\""
+ end
+ o.yaml_initialize c.tag, c.map
+ else
+ h.each { |k,v| o.instance_variable_set(:"@#{k}", v) }
+ end
+ o
+ end
+
+ # Convert +klassname+ to a Class
+ def resolve_class klassname
+ class_loader.load klassname
+ end
+ end
+
+ class NoAliasRuby < ToRuby
+ def visit_Psych_Nodes_Alias o
+ raise BadAlias, "Unknown alias: #{o.anchor}"
+ end
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/visitors/visitor.rb b/jni/ruby/ext/psych/lib/psych/visitors/visitor.rb
new file mode 100644
index 0000000..4d7772f
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/visitors/visitor.rb
@@ -0,0 +1,19 @@
+module Psych
+ module Visitors
+ class Visitor
+ def accept target
+ visit target
+ end
+
+ private
+
+ DISPATCH = Hash.new do |hash, klass|
+ hash[klass] = "visit_#{klass.name.gsub('::', '_')}"
+ end
+
+ def visit target
+ send DISPATCH[target.class], target
+ end
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/visitors/yaml_tree.rb b/jni/ruby/ext/psych/lib/psych/visitors/yaml_tree.rb
new file mode 100644
index 0000000..989e1f0
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/visitors/yaml_tree.rb
@@ -0,0 +1,565 @@
+require 'psych/tree_builder'
+require 'psych/scalar_scanner'
+require 'psych/class_loader'
+
+module Psych
+ module Visitors
+ ###
+ # YAMLTree builds a YAML ast given a Ruby object. For example:
+ #
+ # builder = Psych::Visitors::YAMLTree.new
+ # builder << { :foo => 'bar' }
+ # builder.tree # => #<Psych::Nodes::Stream .. }
+ #
+ class YAMLTree < Psych::Visitors::Visitor
+ class Registrar # :nodoc:
+ def initialize
+ @obj_to_id = {}
+ @obj_to_node = {}
+ @targets = []
+ @counter = 0
+ end
+
+ def register target, node
+ @targets << target
+ @obj_to_node[target.object_id] = node
+ end
+
+ def key? target
+ @obj_to_node.key? target.object_id
+ rescue NoMethodError
+ false
+ end
+
+ def id_for target
+ @obj_to_id[target.object_id] ||= (@counter += 1)
+ end
+
+ def node_for target
+ @obj_to_node[target.object_id]
+ end
+ end
+
+ attr_reader :started, :finished
+ alias :finished? :finished
+ alias :started? :started
+
+ def self.create options = {}, emitter = nil
+ emitter ||= TreeBuilder.new
+ class_loader = ClassLoader.new
+ ss = ScalarScanner.new class_loader
+ new(emitter, ss, options)
+ end
+
+ def self.new emitter = nil, ss = nil, options = nil
+ return super if emitter && ss && options
+
+ if $VERBOSE
+ warn "This API is deprecated, please pass an emitter, scalar scanner, and options or call #{self}.create() (#{caller.first})"
+ end
+ create emitter, ss
+ end
+
+ def initialize emitter, ss, options
+ super()
+ @started = false
+ @finished = false
+ @emitter = emitter
+ @st = Registrar.new
+ @ss = ss
+ @options = options
+ @coders = []
+
+ @dispatch_cache = Hash.new do |h,klass|
+ method = "visit_#{(klass.name || '').split('::').join('_')}"
+
+ method = respond_to?(method) ? method : h[klass.superclass]
+
+ raise(TypeError, "Can't dump #{target.class}") unless method
+
+ h[klass] = method
+ end
+ end
+
+ def start encoding = Nodes::Stream::UTF8
+ @emitter.start_stream(encoding).tap do
+ @started = true
+ end
+ end
+
+ def finish
+ @emitter.end_stream.tap do
+ @finished = true
+ end
+ end
+
+ def tree
+ finish unless finished?
+ @emitter.root
+ end
+
+ def push object
+ start unless started?
+ version = []
+ version = [1,1] if @options[:header]
+
+ case @options[:version]
+ when Array
+ version = @options[:version]
+ when String
+ version = @options[:version].split('.').map { |x| x.to_i }
+ else
+ version = [1,1]
+ end if @options.key? :version
+
+ @emitter.start_document version, [], false
+ accept object
+ @emitter.end_document !@emitter.streaming?
+ end
+ alias :<< :push
+
+ def accept target
+ # return any aliases we find
+ if @st.key? target
+ oid = @st.id_for target
+ node = @st.node_for target
+ anchor = oid.to_s
+ node.anchor = anchor
+ return @emitter.alias anchor
+ end
+
+ if target.respond_to?(:to_yaml)
+ begin
+ loc = target.method(:to_yaml).source_location.first
+ if loc !~ /(syck\/rubytypes.rb|psych\/core_ext.rb)/
+ unless target.respond_to?(:encode_with)
+ if $VERBOSE
+ warn "implementing to_yaml is deprecated, please implement \"encode_with\""
+ end
+
+ target.to_yaml(:nodump => true)
+ end
+ end
+ rescue
+ # public_method or source_location might be overridden,
+ # and it's OK to skip it since it's only to emit a warning
+ end
+ end
+
+ if target.respond_to?(:encode_with)
+ dump_coder target
+ else
+ send(@dispatch_cache[target.class], target)
+ end
+ end
+
+ def visit_Psych_Omap o
+ seq = @emitter.start_sequence(nil, '!omap', false, Nodes::Sequence::BLOCK)
+ register(o, seq)
+
+ o.each { |k,v| visit_Hash k => v }
+ @emitter.end_sequence
+ end
+
+ def visit_Encoding o
+ tag = "!ruby/encoding"
+ @emitter.scalar o.name, nil, tag, false, false, Nodes::Scalar::ANY
+ end
+
+ def visit_Object o
+ tag = Psych.dump_tags[o.class]
+ unless tag
+ klass = o.class == Object ? nil : o.class.name
+ tag = ['!ruby/object', klass].compact.join(':')
+ end
+
+ map = @emitter.start_mapping(nil, tag, false, Nodes::Mapping::BLOCK)
+ register(o, map)
+
+ dump_ivars o
+ @emitter.end_mapping
+ end
+
+ def visit_Struct o
+ tag = ['!ruby/struct', o.class.name].compact.join(':')
+
+ register o, @emitter.start_mapping(nil, tag, false, Nodes::Mapping::BLOCK)
+ o.members.each do |member|
+ @emitter.scalar member.to_s, nil, nil, true, false, Nodes::Scalar::ANY
+ accept o[member]
+ end
+
+ dump_ivars o
+
+ @emitter.end_mapping
+ end
+
+ def visit_Exception o
+ tag = ['!ruby/exception', o.class.name].join ':'
+
+ @emitter.start_mapping nil, tag, false, Nodes::Mapping::BLOCK
+
+ {
+ 'message' => private_iv_get(o, 'mesg'),
+ 'backtrace' => private_iv_get(o, 'backtrace'),
+ }.each do |k,v|
+ next unless v
+ @emitter.scalar k, nil, nil, true, false, Nodes::Scalar::ANY
+ accept v
+ end
+
+ dump_ivars o
+
+ @emitter.end_mapping
+ end
+
+ def visit_NameError o
+ tag = ['!ruby/exception', o.class.name].join ':'
+
+ @emitter.start_mapping nil, tag, false, Nodes::Mapping::BLOCK
+
+ {
+ 'message' => o.message.to_s,
+ 'backtrace' => private_iv_get(o, 'backtrace'),
+ }.each do |k,v|
+ next unless v
+ @emitter.scalar k, nil, nil, true, false, Nodes::Scalar::ANY
+ accept v
+ end
+
+ dump_ivars o
+
+ @emitter.end_mapping
+ end
+
+ def visit_Regexp o
+ register o, @emitter.scalar(o.inspect, nil, '!ruby/regexp', false, false, Nodes::Scalar::ANY)
+ end
+
+ def visit_DateTime o
+ formatted = if o.offset.zero?
+ o.strftime("%Y-%m-%d %H:%M:%S.%9N Z".freeze)
+ else
+ o.strftime("%Y-%m-%d %H:%M:%S.%9N %:z".freeze)
+ end
+ tag = '!ruby/object:DateTime'
+ register o, @emitter.scalar(formatted, nil, tag, false, false, Nodes::Scalar::ANY)
+ end
+
+ def visit_Time o
+ formatted = format_time o
+ register o, @emitter.scalar(formatted, nil, nil, true, false, Nodes::Scalar::ANY)
+ end
+
+ def visit_Rational o
+ register o, @emitter.start_mapping(nil, '!ruby/object:Rational', false, Nodes::Mapping::BLOCK)
+
+ [
+ 'denominator', o.denominator.to_s,
+ 'numerator', o.numerator.to_s
+ ].each do |m|
+ @emitter.scalar m, nil, nil, true, false, Nodes::Scalar::ANY
+ end
+
+ @emitter.end_mapping
+ end
+
+ def visit_Complex o
+ register o, @emitter.start_mapping(nil, '!ruby/object:Complex', false, Nodes::Mapping::BLOCK)
+
+ ['real', o.real.to_s, 'image', o.imag.to_s].each do |m|
+ @emitter.scalar m, nil, nil, true, false, Nodes::Scalar::ANY
+ end
+
+ @emitter.end_mapping
+ end
+
+ def visit_Integer o
+ @emitter.scalar o.to_s, nil, nil, true, false, Nodes::Scalar::ANY
+ end
+ alias :visit_TrueClass :visit_Integer
+ alias :visit_FalseClass :visit_Integer
+ alias :visit_Date :visit_Integer
+
+ def visit_Float o
+ if o.nan?
+ @emitter.scalar '.nan', nil, nil, true, false, Nodes::Scalar::ANY
+ elsif o.infinite?
+ @emitter.scalar((o.infinite? > 0 ? '.inf' : '-.inf'),
+ nil, nil, true, false, Nodes::Scalar::ANY)
+ else
+ @emitter.scalar o.to_s, nil, nil, true, false, Nodes::Scalar::ANY
+ end
+ end
+
+ def visit_BigDecimal o
+ @emitter.scalar o._dump, nil, '!ruby/object:BigDecimal', false, false, Nodes::Scalar::ANY
+ end
+
+ def visit_String o
+ plain = true
+ quote = true
+ style = Nodes::Scalar::PLAIN
+ tag = nil
+ str = o
+
+ if binary?(o)
+ str = [o].pack('m').chomp
+ tag = '!binary' # FIXME: change to below when syck is removed
+ #tag = 'tag:yaml.org,2002:binary'
+ style = Nodes::Scalar::LITERAL
+ plain = false
+ quote = false
+ elsif o =~ /\n/
+ style = Nodes::Scalar::LITERAL
+ elsif o == '<<'
+ style = Nodes::Scalar::SINGLE_QUOTED
+ tag = 'tag:yaml.org,2002:str'
+ plain = false
+ quote = false
+ elsif o =~ /^\W[^"]*$/
+ style = Nodes::Scalar::DOUBLE_QUOTED
+ else
+ unless String === @ss.tokenize(o)
+ style = Nodes::Scalar::SINGLE_QUOTED
+ end
+ end
+
+ ivars = find_ivars o
+
+ if ivars.empty?
+ unless o.class == ::String
+ tag = "!ruby/string:#{o.class}"
+ plain = false
+ quote = false
+ end
+ @emitter.scalar str, nil, tag, plain, quote, style
+ else
+ maptag = '!ruby/string'
+ maptag << ":#{o.class}" unless o.class == ::String
+
+ register o, @emitter.start_mapping(nil, maptag, false, Nodes::Mapping::BLOCK)
+ @emitter.scalar 'str', nil, nil, true, false, Nodes::Scalar::ANY
+ @emitter.scalar str, nil, tag, plain, quote, style
+
+ dump_ivars o
+
+ @emitter.end_mapping
+ end
+ end
+
+ def visit_Module o
+ raise TypeError, "can't dump anonymous module: #{o}" unless o.name
+ register o, @emitter.scalar(o.name, nil, '!ruby/module', false, false, Nodes::Scalar::SINGLE_QUOTED)
+ end
+
+ def visit_Class o
+ raise TypeError, "can't dump anonymous class: #{o}" unless o.name
+ register o, @emitter.scalar(o.name, nil, '!ruby/class', false, false, Nodes::Scalar::SINGLE_QUOTED)
+ end
+
+ def visit_Range o
+ register o, @emitter.start_mapping(nil, '!ruby/range', false, Nodes::Mapping::BLOCK)
+ ['begin', o.begin, 'end', o.end, 'excl', o.exclude_end?].each do |m|
+ accept m
+ end
+ @emitter.end_mapping
+ end
+
+ def visit_Hash o
+ tag = o.class == ::Hash ? nil : "!ruby/hash:#{o.class}"
+ implicit = !tag
+
+ register(o, @emitter.start_mapping(nil, tag, implicit, Psych::Nodes::Mapping::BLOCK))
+
+ o.each do |k,v|
+ accept k
+ accept v
+ end
+
+ @emitter.end_mapping
+ end
+
+ def visit_Psych_Set o
+ register(o, @emitter.start_mapping(nil, '!set', false, Psych::Nodes::Mapping::BLOCK))
+
+ o.each do |k,v|
+ accept k
+ accept v
+ end
+
+ @emitter.end_mapping
+ end
+
+ def visit_Array o
+ if o.class == ::Array
+ register o, @emitter.start_sequence(nil, nil, true, Nodes::Sequence::BLOCK)
+ o.each { |c| accept c }
+ @emitter.end_sequence
+ else
+ visit_array_subclass o
+ end
+ end
+
+ def visit_NilClass o
+ @emitter.scalar('', nil, 'tag:yaml.org,2002:null', true, false, Nodes::Scalar::ANY)
+ end
+
+ def visit_Symbol o
+ if o.empty?
+ @emitter.scalar "", nil, '!ruby/symbol', false, false, Nodes::Scalar::ANY
+ else
+ @emitter.scalar ":#{o}", nil, nil, true, false, Nodes::Scalar::ANY
+ end
+ end
+
+ def visit_BasicObject o
+ tag = Psych.dump_tags[o.class]
+ tag ||= "!ruby/marshalable:#{o.class.name}"
+
+ map = @emitter.start_mapping(nil, tag, false, Nodes::Mapping::BLOCK)
+ register(o, map)
+
+ o.marshal_dump.each(&method(:accept))
+
+ @emitter.end_mapping
+ end
+
+ private
+ # FIXME: Remove the index and count checks in Psych 3.0
+ NULL = "\x00"
+ BINARY_RANGE = "\x00-\x7F"
+ WS_RANGE = "^ -~\t\r\n"
+
+ def binary? string
+ (string.encoding == Encoding::ASCII_8BIT && !string.ascii_only?) ||
+ string.index(NULL) ||
+ string.count(BINARY_RANGE, WS_RANGE).fdiv(string.length) > 0.3
+ end
+
+ def visit_array_subclass o
+ tag = "!ruby/array:#{o.class}"
+ if o.instance_variables.empty?
+ node = @emitter.start_sequence(nil, tag, false, Nodes::Sequence::BLOCK)
+ register o, node
+ o.each { |c| accept c }
+ @emitter.end_sequence
+ else
+ node = @emitter.start_mapping(nil, tag, false, Nodes::Sequence::BLOCK)
+ register o, node
+
+ # Dump the internal list
+ accept 'internal'
+ @emitter.start_sequence(nil, nil, true, Nodes::Sequence::BLOCK)
+ o.each { |c| accept c }
+ @emitter.end_sequence
+
+ # Dump the ivars
+ accept 'ivars'
+ @emitter.start_mapping(nil, nil, true, Nodes::Sequence::BLOCK)
+ o.instance_variables.each do |ivar|
+ accept ivar
+ accept o.instance_variable_get ivar
+ end
+ @emitter.end_mapping
+
+ @emitter.end_mapping
+ end
+ end
+
+ def dump_list o
+ end
+
+ # '%:z' was no defined until 1.9.3
+ if RUBY_VERSION < '1.9.3'
+ def format_time time
+ formatted = time.strftime("%Y-%m-%d %H:%M:%S.%9N")
+
+ if time.utc?
+ formatted += " Z"
+ else
+ zone = time.strftime('%z')
+ formatted += " #{zone[0,3]}:#{zone[3,5]}"
+ end
+
+ formatted
+ end
+ else
+ def format_time time
+ if time.utc?
+ time.strftime("%Y-%m-%d %H:%M:%S.%9N Z")
+ else
+ time.strftime("%Y-%m-%d %H:%M:%S.%9N %:z")
+ end
+ end
+ end
+
+ # FIXME: remove this method once "to_yaml_properties" is removed
+ def find_ivars target
+ begin
+ loc = target.method(:to_yaml_properties).source_location.first
+ unless loc.start_with?(Psych::DEPRECATED) || loc.end_with?('rubytypes.rb')
+ if $VERBOSE
+ warn "#{loc}: to_yaml_properties is deprecated, please implement \"encode_with(coder)\""
+ end
+ return target.to_yaml_properties
+ end
+ rescue
+ # public_method or source_location might be overridden,
+ # and it's OK to skip it since it's only to emit a warning.
+ end
+
+ target.instance_variables
+ end
+
+ def register target, yaml_obj
+ @st.register target, yaml_obj
+ yaml_obj
+ end
+
+ def dump_coder o
+ @coders << o
+ tag = Psych.dump_tags[o.class]
+ unless tag
+ klass = o.class == Object ? nil : o.class.name
+ tag = ['!ruby/object', klass].compact.join(':')
+ end
+
+ c = Psych::Coder.new(tag)
+ o.encode_with(c)
+ emit_coder c
+ end
+
+ def emit_coder c
+ case c.type
+ when :scalar
+ @emitter.scalar c.scalar, nil, c.tag, c.tag.nil?, false, Nodes::Scalar::ANY
+ when :seq
+ @emitter.start_sequence nil, c.tag, c.tag.nil?, Nodes::Sequence::BLOCK
+ c.seq.each do |thing|
+ accept thing
+ end
+ @emitter.end_sequence
+ when :map
+ @emitter.start_mapping nil, c.tag, c.implicit, c.style
+ c.map.each do |k,v|
+ accept k
+ accept v
+ end
+ @emitter.end_mapping
+ when :object
+ accept c.object
+ end
+ end
+
+ def dump_ivars target
+ ivars = find_ivars target
+
+ ivars.each do |iv|
+ @emitter.scalar("#{iv.to_s.sub(/^@/, '')}", nil, nil, true, false, Nodes::Scalar::ANY)
+ accept target.instance_variable_get(iv)
+ end
+ end
+ end
+ end
+end
diff --git a/jni/ruby/ext/psych/lib/psych/y.rb b/jni/ruby/ext/psych/lib/psych/y.rb
new file mode 100644
index 0000000..d0e049d
--- /dev/null
+++ b/jni/ruby/ext/psych/lib/psych/y.rb
@@ -0,0 +1,9 @@
+module Kernel
+ ###
+ # An alias for Psych.dump_stream meant to be used with IRB.
+ def y *objects
+ puts Psych.dump_stream(*objects)
+ end
+ private :y
+end
+
diff --git a/jni/ruby/ext/psych/psych.c b/jni/ruby/ext/psych/psych.c
new file mode 100644
index 0000000..3bb59bf
--- /dev/null
+++ b/jni/ruby/ext/psych/psych.c
@@ -0,0 +1,34 @@
+#include <psych.h>
+
+/* call-seq: Psych.libyaml_version
+ *
+ * Returns the version of libyaml being used
+ */
+static VALUE libyaml_version(VALUE module)
+{
+ int major, minor, patch;
+ VALUE list[3];
+
+ yaml_get_version(&major, &minor, &patch);
+
+ list[0] = INT2NUM((long)major);
+ list[1] = INT2NUM((long)minor);
+ list[2] = INT2NUM((long)patch);
+
+ return rb_ary_new4((long)3, list);
+}
+
+VALUE mPsych;
+
+void Init_psych(void)
+{
+ mPsych = rb_define_module("Psych");
+
+ rb_define_singleton_method(mPsych, "libyaml_version", libyaml_version, 0);
+
+ Init_psych_parser();
+ Init_psych_emitter();
+ Init_psych_to_ruby();
+ Init_psych_yaml_tree();
+}
+/* vim: set noet sws=4 sw=4: */
diff --git a/jni/ruby/ext/psych/psych.gemspec b/jni/ruby/ext/psych/psych.gemspec
new file mode 100644
index 0000000..648eb79
--- /dev/null
+++ b/jni/ruby/ext/psych/psych.gemspec
@@ -0,0 +1,23 @@
+# -*- encoding: utf-8 -*-
+
+Gem::Specification.new do |s|
+ s.name = "psych"
+ s.version = "2.0.8"
+
+ s.required_rubygems_version = Gem::Requirement.new(">= 0") if s.respond_to? :required_rubygems_version=
+ s.require_paths = ["lib"]
+ s.authors = ["Aaron Patterson"]
+ s.date = "2014-12-05"
+ s.description = "Psych is a YAML parser and emitter. Psych leverages libyaml[http://pyyaml.org/wiki/LibYAML]\nfor its YAML parsing and emitting capabilities. In addition to wrapping\nlibyaml, Psych also knows how to serialize and de-serialize most Ruby objects\nto and from the YAML format."
+ s.email = ["aaron@tenderlovemaking.com"]
+ s.extensions = ["ext/psych/extconf.rb"]
+ s.extra_rdoc_files = ["CHANGELOG.rdoc", "README.rdoc"]
+ s.files = [".autotest", ".gemtest", "CHANGELOG.rdoc", "Manifest.txt", "README.rdoc", "Rakefile", "ext/psych/depend", "ext/psych/extconf.rb", "ext/psych/psych.c", "ext/psych/psych.h", "ext/psych/psych_emitter.c", "ext/psych/psych_emitter.h", "ext/psych/psych_parser.c", "ext/psych/psych_parser.h", "ext/psych/psych_to_ruby.c", "ext/psych/psych_to_ruby.h", "ext/psych/psych_yaml_tree.c", "ext/psych/psych_yaml_tree.h", "ext/psych/yaml/LICENSE", "ext/psych/yaml/api.c", "ext/psych/yaml/config.h", "ext/psych/yaml/dumper.c", "ext/psych/yaml/emitter.c", "ext/psych/yaml/loader.c", "ext/psych/yaml/parser.c", "ext/psych/yaml/reader.c", "ext/psych/yaml/scanner.c", "ext/psych/yaml/writer.c", "ext/psych/yaml/yaml.h", "ext/psych/yaml/yaml_private.h", "lib/psych.rb", "lib/psych/class_loader.rb", "lib/psych/coder.rb", "lib/psych/core_ext.rb", "lib/psych/deprecated.rb", "lib/psych/exception.rb", "lib/psych/handler.rb", "lib/psych/handlers/document_stream.rb", "lib/psych/handlers/recorder.rb", "lib/psych/json/ruby_events.rb", "lib/psych/json/stream.rb", "lib/psych/json/tree_builder.rb", "lib/psych/json/yaml_events.rb", "lib/psych/nodes.rb", "lib/psych/nodes/alias.rb", "lib/psych/nodes/document.rb", "lib/psych/nodes/mapping.rb", "lib/psych/nodes/node.rb", "lib/psych/nodes/scalar.rb", "lib/psych/nodes/sequence.rb", "lib/psych/nodes/stream.rb", "lib/psych/omap.rb", "lib/psych/parser.rb", "lib/psych/scalar_scanner.rb", "lib/psych/set.rb", "lib/psych/stream.rb", "lib/psych/streaming.rb", "lib/psych/syntax_error.rb", "lib/psych/tree_builder.rb", "lib/psych/visitors.rb", "lib/psych/visitors/depth_first.rb", "lib/psych/visitors/emitter.rb", "lib/psych/visitors/json_tree.rb", "lib/psych/visitors/to_ruby.rb", "lib/psych/visitors/visitor.rb", "lib/psych/visitors/yaml_tree.rb", "lib/psych/y.rb", "test/psych/handlers/test_recorder.rb", "test/psych/helper.rb", "test/psych/json/test_stream.rb", "test/psych/nodes/test_enumerable.rb", "test/psych/test_alias_and_anchor.rb", "test/psych/test_array.rb", "test/psych/test_boolean.rb", "test/psych/test_class.rb", "test/psych/test_coder.rb", "test/psych/test_date_time.rb", "test/psych/test_deprecated.rb", "test/psych/test_document.rb", "test/psych/test_emitter.rb", "test/psych/test_encoding.rb", "test/psych/test_exception.rb", "test/psych/test_hash.rb", "test/psych/test_json_tree.rb", "test/psych/test_marshalable.rb", "test/psych/test_merge_keys.rb", "test/psych/test_nil.rb", "test/psych/test_null.rb", "test/psych/test_numeric.rb", "test/psych/test_object.rb", "test/psych/test_object_references.rb", "test/psych/test_omap.rb", "test/psych/test_parser.rb", "test/psych/test_psych.rb", "test/psych/test_safe_load.rb", "test/psych/test_scalar.rb", "test/psych/test_scalar_scanner.rb", "test/psych/test_serialize_subclasses.rb", "test/psych/test_set.rb", "test/psych/test_stream.rb", "test/psych/test_string.rb", "test/psych/test_struct.rb", "test/psych/test_symbol.rb", "test/psych/test_tainted.rb", "test/psych/test_to_yaml_properties.rb", "test/psych/test_tree_builder.rb", "test/psych/test_yaml.rb", "test/psych/test_yamldbm.rb", "test/psych/test_yamlstore.rb", "test/psych/visitors/test_depth_first.rb", "test/psych/visitors/test_emitter.rb", "test/psych/visitors/test_to_ruby.rb", "test/psych/visitors/test_yaml_tree.rb"]
+ s.homepage = "http://github.com/tenderlove/psych"
+ s.licenses = ["MIT"]
+ s.rdoc_options = ["--main", "README.rdoc"]
+ s.required_ruby_version = Gem::Requirement.new(">= 1.9.2")
+ s.rubygems_version = "2.4.4"
+ s.summary = "Psych is a YAML parser and emitter"
+ s.test_files = ["test/psych/handlers/test_recorder.rb", "test/psych/json/test_stream.rb", "test/psych/nodes/test_enumerable.rb", "test/psych/test_alias_and_anchor.rb", "test/psych/test_array.rb", "test/psych/test_boolean.rb", "test/psych/test_class.rb", "test/psych/test_coder.rb", "test/psych/test_date_time.rb", "test/psych/test_deprecated.rb", "test/psych/test_document.rb", "test/psych/test_emitter.rb", "test/psych/test_encoding.rb", "test/psych/test_exception.rb", "test/psych/test_hash.rb", "test/psych/test_json_tree.rb", "test/psych/test_marshalable.rb", "test/psych/test_merge_keys.rb", "test/psych/test_nil.rb", "test/psych/test_null.rb", "test/psych/test_numeric.rb", "test/psych/test_object.rb", "test/psych/test_object_references.rb", "test/psych/test_omap.rb", "test/psych/test_parser.rb", "test/psych/test_psych.rb", "test/psych/test_safe_load.rb", "test/psych/test_scalar.rb", "test/psych/test_scalar_scanner.rb", "test/psych/test_serialize_subclasses.rb", "test/psych/test_set.rb", "test/psych/test_stream.rb", "test/psych/test_string.rb", "test/psych/test_struct.rb", "test/psych/test_symbol.rb", "test/psych/test_tainted.rb", "test/psych/test_to_yaml_properties.rb", "test/psych/test_tree_builder.rb", "test/psych/test_yaml.rb", "test/psych/test_yamldbm.rb", "test/psych/test_yamlstore.rb", "test/psych/visitors/test_depth_first.rb", "test/psych/visitors/test_emitter.rb", "test/psych/visitors/test_to_ruby.rb", "test/psych/visitors/test_yaml_tree.rb"]
+end
diff --git a/jni/ruby/ext/psych/psych.h b/jni/ruby/ext/psych/psych.h
new file mode 100644
index 0000000..1830ca4
--- /dev/null
+++ b/jni/ruby/ext/psych/psych.h
@@ -0,0 +1,20 @@
+#ifndef PSYCH_H
+#define PSYCH_H
+
+#include <ruby.h>
+
+#ifdef HAVE_RUBY_ENCODING_H
+#include <ruby/encoding.h>
+#endif
+
+#include <yaml.h>
+
+#include <psych_parser.h>
+#include <psych_emitter.h>
+#include <psych_to_ruby.h>
+#include <psych_yaml_tree.h>
+
+extern VALUE mPsych;
+
+
+#endif
diff --git a/jni/ruby/ext/psych/psych_emitter.c b/jni/ruby/ext/psych/psych_emitter.c
new file mode 100644
index 0000000..4ba2381
--- /dev/null
+++ b/jni/ruby/ext/psych/psych_emitter.c
@@ -0,0 +1,556 @@
+#include <psych.h>
+
+VALUE cPsychEmitter;
+static ID id_write;
+static ID id_line_width;
+static ID id_indentation;
+static ID id_canonical;
+
+static void emit(yaml_emitter_t * emitter, yaml_event_t * event)
+{
+ if(!yaml_emitter_emit(emitter, event))
+ rb_raise(rb_eRuntimeError, "%s", emitter->problem);
+}
+
+static int writer(void *ctx, unsigned char *buffer, size_t size)
+{
+ VALUE io = (VALUE)ctx;
+ VALUE str = rb_str_new((const char *)buffer, (long)size);
+ VALUE wrote = rb_funcall(io, id_write, 1, str);
+ return (int)NUM2INT(wrote);
+}
+
+static void dealloc(void * ptr)
+{
+ yaml_emitter_t * emitter;
+
+ emitter = (yaml_emitter_t *)ptr;
+ yaml_emitter_delete(emitter);
+ xfree(emitter);
+}
+
+#if 0
+static size_t memsize(const void *ptr)
+{
+ const yaml_emitter_t *emitter = ptr;
+ /* TODO: calculate emitter's size */
+ return 0;
+}
+#endif
+
+static const rb_data_type_t psych_emitter_type = {
+ "Psych/emitter",
+ {0, dealloc, 0,},
+ 0, 0,
+#ifdef RUBY_TYPED_FREE_IMMEDIATELY
+ RUBY_TYPED_FREE_IMMEDIATELY,
+#endif
+};
+
+static VALUE allocate(VALUE klass)
+{
+ yaml_emitter_t * emitter;
+
+ emitter = xmalloc(sizeof(yaml_emitter_t));
+
+ yaml_emitter_initialize(emitter);
+ yaml_emitter_set_unicode(emitter, 1);
+ yaml_emitter_set_indent(emitter, 2);
+
+ return TypedData_Wrap_Struct(klass, &psych_emitter_type, emitter);
+}
+
+/* call-seq: Psych::Emitter.new(io, options = Psych::Emitter::OPTIONS)
+ *
+ * Create a new Psych::Emitter that writes to +io+.
+ */
+static VALUE initialize(int argc, VALUE *argv, VALUE self)
+{
+ yaml_emitter_t * emitter;
+ VALUE io, options;
+ VALUE line_width;
+ VALUE indent;
+ VALUE canonical;
+
+ TypedData_Get_Struct(self, yaml_emitter_t, &psych_emitter_type, emitter);
+
+ if (rb_scan_args(argc, argv, "11", &io, &options) == 2) {
+ line_width = rb_funcall(options, id_line_width, 0);
+ indent = rb_funcall(options, id_indentation, 0);
+ canonical = rb_funcall(options, id_canonical, 0);
+
+ yaml_emitter_set_width(emitter, NUM2INT(line_width));
+ yaml_emitter_set_indent(emitter, NUM2INT(indent));
+ yaml_emitter_set_canonical(emitter, Qtrue == canonical ? 1 : 0);
+ }
+
+ yaml_emitter_set_output(emitter, writer, (void *)io);
+
+ return self;
+}
+
+/* call-seq: emitter.start_stream(encoding)
+ *
+ * Start a stream emission with +encoding+
+ *
+ * See Psych::Handler#start_stream
+ */
+static VALUE start_stream(VALUE self, VALUE encoding)
+{
+ yaml_emitter_t * emitter;
+ yaml_event_t event;
+ TypedData_Get_Struct(self, yaml_emitter_t, &psych_emitter_type, emitter);
+ Check_Type(encoding, T_FIXNUM);
+
+ yaml_stream_start_event_initialize(&event, (yaml_encoding_t)NUM2INT(encoding));
+
+ emit(emitter, &event);
+
+ return self;
+}
+
+/* call-seq: emitter.end_stream
+ *
+ * End a stream emission
+ *
+ * See Psych::Handler#end_stream
+ */
+static VALUE end_stream(VALUE self)
+{
+ yaml_emitter_t * emitter;
+ yaml_event_t event;
+ TypedData_Get_Struct(self, yaml_emitter_t, &psych_emitter_type, emitter);
+
+ yaml_stream_end_event_initialize(&event);
+
+ emit(emitter, &event);
+
+ return self;
+}
+
+/* call-seq: emitter.start_document(version, tags, implicit)
+ *
+ * Start a document emission with YAML +version+, +tags+, and an +implicit+
+ * start.
+ *
+ * See Psych::Handler#start_document
+ */
+static VALUE start_document(VALUE self, VALUE version, VALUE tags, VALUE imp)
+{
+ yaml_emitter_t * emitter;
+ yaml_tag_directive_t * head = NULL;
+ yaml_tag_directive_t * tail = NULL;
+ yaml_event_t event;
+ yaml_version_directive_t version_directive;
+ TypedData_Get_Struct(self, yaml_emitter_t, &psych_emitter_type, emitter);
+
+
+ Check_Type(version, T_ARRAY);
+
+ if(RARRAY_LEN(version) > 0) {
+ VALUE major = rb_ary_entry(version, (long)0);
+ VALUE minor = rb_ary_entry(version, (long)1);
+
+ version_directive.major = NUM2INT(major);
+ version_directive.minor = NUM2INT(minor);
+ }
+
+ if(RTEST(tags)) {
+ int i = 0;
+#ifdef HAVE_RUBY_ENCODING_H
+ rb_encoding * encoding = rb_utf8_encoding();
+#endif
+
+ Check_Type(tags, T_ARRAY);
+
+ head = xcalloc((size_t)RARRAY_LEN(tags), sizeof(yaml_tag_directive_t));
+ tail = head;
+
+ for(i = 0; i < RARRAY_LEN(tags); i++) {
+ VALUE tuple = RARRAY_PTR(tags)[i];
+ VALUE name;
+ VALUE value;
+
+ Check_Type(tuple, T_ARRAY);
+
+ if(RARRAY_LEN(tuple) < 2) {
+ xfree(head);
+ rb_raise(rb_eRuntimeError, "tag tuple must be of length 2");
+ }
+ name = RARRAY_PTR(tuple)[0];
+ value = RARRAY_PTR(tuple)[1];
+#ifdef HAVE_RUBY_ENCODING_H
+ name = rb_str_export_to_enc(name, encoding);
+ value = rb_str_export_to_enc(value, encoding);
+#endif
+
+ tail->handle = (yaml_char_t *)StringValuePtr(name);
+ tail->prefix = (yaml_char_t *)StringValuePtr(value);
+
+ tail++;
+ }
+ }
+
+ yaml_document_start_event_initialize(
+ &event,
+ (RARRAY_LEN(version) > 0) ? &version_directive : NULL,
+ head,
+ tail,
+ imp ? 1 : 0
+ );
+
+ emit(emitter, &event);
+
+ if(head) xfree(head);
+
+ return self;
+}
+
+/* call-seq: emitter.end_document(implicit)
+ *
+ * End a document emission with an +implicit+ ending.
+ *
+ * See Psych::Handler#end_document
+ */
+static VALUE end_document(VALUE self, VALUE imp)
+{
+ yaml_emitter_t * emitter;
+ yaml_event_t event;
+ TypedData_Get_Struct(self, yaml_emitter_t, &psych_emitter_type, emitter);
+
+ yaml_document_end_event_initialize(&event, imp ? 1 : 0);
+
+ emit(emitter, &event);
+
+ return self;
+}
+
+/* call-seq: emitter.scalar(value, anchor, tag, plain, quoted, style)
+ *
+ * Emit a scalar with +value+, +anchor+, +tag+, and a +plain+ or +quoted+
+ * string type with +style+.
+ *
+ * See Psych::Handler#scalar
+ */
+static VALUE scalar(
+ VALUE self,
+ VALUE value,
+ VALUE anchor,
+ VALUE tag,
+ VALUE plain,
+ VALUE quoted,
+ VALUE style
+ ) {
+ yaml_emitter_t * emitter;
+ yaml_event_t event;
+#ifdef HAVE_RUBY_ENCODING_H
+ rb_encoding *encoding;
+#endif
+ TypedData_Get_Struct(self, yaml_emitter_t, &psych_emitter_type, emitter);
+
+ Check_Type(value, T_STRING);
+
+#ifdef HAVE_RUBY_ENCODING_H
+ encoding = rb_utf8_encoding();
+
+ value = rb_str_export_to_enc(value, encoding);
+
+ if(!NIL_P(anchor)) {
+ Check_Type(anchor, T_STRING);
+ anchor = rb_str_export_to_enc(anchor, encoding);
+ }
+
+ if(!NIL_P(tag)) {
+ Check_Type(tag, T_STRING);
+ tag = rb_str_export_to_enc(tag, encoding);
+ }
+#endif
+
+ yaml_scalar_event_initialize(
+ &event,
+ (yaml_char_t *)(NIL_P(anchor) ? NULL : StringValuePtr(anchor)),
+ (yaml_char_t *)(NIL_P(tag) ? NULL : StringValuePtr(tag)),
+ (yaml_char_t*)StringValuePtr(value),
+ (int)RSTRING_LEN(value),
+ plain ? 1 : 0,
+ quoted ? 1 : 0,
+ (yaml_scalar_style_t)NUM2INT(style)
+ );
+
+ emit(emitter, &event);
+
+ return self;
+}
+
+/* call-seq: emitter.start_sequence(anchor, tag, implicit, style)
+ *
+ * Start emitting a sequence with +anchor+, a +tag+, +implicit+ sequence
+ * start and end, along with +style+.
+ *
+ * See Psych::Handler#start_sequence
+ */
+static VALUE start_sequence(
+ VALUE self,
+ VALUE anchor,
+ VALUE tag,
+ VALUE implicit,
+ VALUE style
+ ) {
+ yaml_emitter_t * emitter;
+ yaml_event_t event;
+
+#ifdef HAVE_RUBY_ENCODING_H
+ rb_encoding * encoding = rb_utf8_encoding();
+
+ if(!NIL_P(anchor)) {
+ Check_Type(anchor, T_STRING);
+ anchor = rb_str_export_to_enc(anchor, encoding);
+ }
+
+ if(!NIL_P(tag)) {
+ Check_Type(tag, T_STRING);
+ tag = rb_str_export_to_enc(tag, encoding);
+ }
+#endif
+
+ TypedData_Get_Struct(self, yaml_emitter_t, &psych_emitter_type, emitter);
+
+ yaml_sequence_start_event_initialize(
+ &event,
+ (yaml_char_t *)(NIL_P(anchor) ? NULL : StringValuePtr(anchor)),
+ (yaml_char_t *)(NIL_P(tag) ? NULL : StringValuePtr(tag)),
+ implicit ? 1 : 0,
+ (yaml_sequence_style_t)NUM2INT(style)
+ );
+
+ emit(emitter, &event);
+
+ return self;
+}
+
+/* call-seq: emitter.end_sequence
+ *
+ * End sequence emission.
+ *
+ * See Psych::Handler#end_sequence
+ */
+static VALUE end_sequence(VALUE self)
+{
+ yaml_emitter_t * emitter;
+ yaml_event_t event;
+ TypedData_Get_Struct(self, yaml_emitter_t, &psych_emitter_type, emitter);
+
+ yaml_sequence_end_event_initialize(&event);
+
+ emit(emitter, &event);
+
+ return self;
+}
+
+/* call-seq: emitter.start_mapping(anchor, tag, implicit, style)
+ *
+ * Start emitting a YAML map with +anchor+, +tag+, an +implicit+ start
+ * and end, and +style+.
+ *
+ * See Psych::Handler#start_mapping
+ */
+static VALUE start_mapping(
+ VALUE self,
+ VALUE anchor,
+ VALUE tag,
+ VALUE implicit,
+ VALUE style
+ ) {
+ yaml_emitter_t * emitter;
+ yaml_event_t event;
+#ifdef HAVE_RUBY_ENCODING_H
+ rb_encoding *encoding;
+#endif
+ TypedData_Get_Struct(self, yaml_emitter_t, &psych_emitter_type, emitter);
+
+#ifdef HAVE_RUBY_ENCODING_H
+ encoding = rb_utf8_encoding();
+
+ if(!NIL_P(anchor)) {
+ Check_Type(anchor, T_STRING);
+ anchor = rb_str_export_to_enc(anchor, encoding);
+ }
+
+ if(!NIL_P(tag)) {
+ Check_Type(tag, T_STRING);
+ tag = rb_str_export_to_enc(tag, encoding);
+ }
+#endif
+
+ yaml_mapping_start_event_initialize(
+ &event,
+ (yaml_char_t *)(NIL_P(anchor) ? NULL : StringValuePtr(anchor)),
+ (yaml_char_t *)(NIL_P(tag) ? NULL : StringValuePtr(tag)),
+ implicit ? 1 : 0,
+ (yaml_mapping_style_t)NUM2INT(style)
+ );
+
+ emit(emitter, &event);
+
+ return self;
+}
+
+/* call-seq: emitter.end_mapping
+ *
+ * Emit the end of a mapping.
+ *
+ * See Psych::Handler#end_mapping
+ */
+static VALUE end_mapping(VALUE self)
+{
+ yaml_emitter_t * emitter;
+ yaml_event_t event;
+ TypedData_Get_Struct(self, yaml_emitter_t, &psych_emitter_type, emitter);
+
+ yaml_mapping_end_event_initialize(&event);
+
+ emit(emitter, &event);
+
+ return self;
+}
+
+/* call-seq: emitter.alias(anchor)
+ *
+ * Emit an alias with +anchor+.
+ *
+ * See Psych::Handler#alias
+ */
+static VALUE alias(VALUE self, VALUE anchor)
+{
+ yaml_emitter_t * emitter;
+ yaml_event_t event;
+ TypedData_Get_Struct(self, yaml_emitter_t, &psych_emitter_type, emitter);
+
+#ifdef HAVE_RUBY_ENCODING_H
+ if(!NIL_P(anchor)) {
+ Check_Type(anchor, T_STRING);
+ anchor = rb_str_export_to_enc(anchor, rb_utf8_encoding());
+ }
+#endif
+
+ yaml_alias_event_initialize(
+ &event,
+ (yaml_char_t *)(NIL_P(anchor) ? NULL : StringValuePtr(anchor))
+ );
+
+ emit(emitter, &event);
+
+ return self;
+}
+
+/* call-seq: emitter.canonical = true
+ *
+ * Set the output style to canonical, or not.
+ */
+static VALUE set_canonical(VALUE self, VALUE style)
+{
+ yaml_emitter_t * emitter;
+ TypedData_Get_Struct(self, yaml_emitter_t, &psych_emitter_type, emitter);
+
+ yaml_emitter_set_canonical(emitter, Qtrue == style ? 1 : 0);
+
+ return style;
+}
+
+/* call-seq: emitter.canonical
+ *
+ * Get the output style, canonical or not.
+ */
+static VALUE canonical(VALUE self)
+{
+ yaml_emitter_t * emitter;
+ TypedData_Get_Struct(self, yaml_emitter_t, &psych_emitter_type, emitter);
+
+ return (emitter->canonical == 0) ? Qfalse : Qtrue;
+}
+
+/* call-seq: emitter.indentation = level
+ *
+ * Set the indentation level to +level+. The level must be less than 10 and
+ * greater than 1.
+ */
+static VALUE set_indentation(VALUE self, VALUE level)
+{
+ yaml_emitter_t * emitter;
+ TypedData_Get_Struct(self, yaml_emitter_t, &psych_emitter_type, emitter);
+
+ yaml_emitter_set_indent(emitter, NUM2INT(level));
+
+ return level;
+}
+
+/* call-seq: emitter.indentation
+ *
+ * Get the indentation level.
+ */
+static VALUE indentation(VALUE self)
+{
+ yaml_emitter_t * emitter;
+ TypedData_Get_Struct(self, yaml_emitter_t, &psych_emitter_type, emitter);
+
+ return INT2NUM(emitter->best_indent);
+}
+
+/* call-seq: emitter.line_width
+ *
+ * Get the preferred line width.
+ */
+static VALUE line_width(VALUE self)
+{
+ yaml_emitter_t * emitter;
+ TypedData_Get_Struct(self, yaml_emitter_t, &psych_emitter_type, emitter);
+
+ return INT2NUM(emitter->best_width);
+}
+
+/* call-seq: emitter.line_width = width
+ *
+ * Set the preferred line with to +width+.
+ */
+static VALUE set_line_width(VALUE self, VALUE width)
+{
+ yaml_emitter_t * emitter;
+ TypedData_Get_Struct(self, yaml_emitter_t, &psych_emitter_type, emitter);
+
+ yaml_emitter_set_width(emitter, NUM2INT(width));
+
+ return width;
+}
+
+void Init_psych_emitter(void)
+{
+ VALUE psych = rb_define_module("Psych");
+ VALUE handler = rb_define_class_under(psych, "Handler", rb_cObject);
+ cPsychEmitter = rb_define_class_under(psych, "Emitter", handler);
+
+ rb_define_alloc_func(cPsychEmitter, allocate);
+
+ rb_define_method(cPsychEmitter, "initialize", initialize, -1);
+ rb_define_method(cPsychEmitter, "start_stream", start_stream, 1);
+ rb_define_method(cPsychEmitter, "end_stream", end_stream, 0);
+ rb_define_method(cPsychEmitter, "start_document", start_document, 3);
+ rb_define_method(cPsychEmitter, "end_document", end_document, 1);
+ rb_define_method(cPsychEmitter, "scalar", scalar, 6);
+ rb_define_method(cPsychEmitter, "start_sequence", start_sequence, 4);
+ rb_define_method(cPsychEmitter, "end_sequence", end_sequence, 0);
+ rb_define_method(cPsychEmitter, "start_mapping", start_mapping, 4);
+ rb_define_method(cPsychEmitter, "end_mapping", end_mapping, 0);
+ rb_define_method(cPsychEmitter, "alias", alias, 1);
+ rb_define_method(cPsychEmitter, "canonical", canonical, 0);
+ rb_define_method(cPsychEmitter, "canonical=", set_canonical, 1);
+ rb_define_method(cPsychEmitter, "indentation", indentation, 0);
+ rb_define_method(cPsychEmitter, "indentation=", set_indentation, 1);
+ rb_define_method(cPsychEmitter, "line_width", line_width, 0);
+ rb_define_method(cPsychEmitter, "line_width=", set_line_width, 1);
+
+ id_write = rb_intern("write");
+ id_line_width = rb_intern("line_width");
+ id_indentation = rb_intern("indentation");
+ id_canonical = rb_intern("canonical");
+}
+/* vim: set noet sws=4 sw=4: */
diff --git a/jni/ruby/ext/psych/psych_emitter.h b/jni/ruby/ext/psych/psych_emitter.h
new file mode 100644
index 0000000..4c1482a
--- /dev/null
+++ b/jni/ruby/ext/psych/psych_emitter.h
@@ -0,0 +1,8 @@
+#ifndef PSYCH_EMITTER_H
+#define PSYCH_EMITTER_H
+
+#include <psych.h>
+
+void Init_psych_emitter(void);
+
+#endif
diff --git a/jni/ruby/ext/psych/psych_parser.c b/jni/ruby/ext/psych/psych_parser.c
new file mode 100644
index 0000000..faae460
--- /dev/null
+++ b/jni/ruby/ext/psych/psych_parser.c
@@ -0,0 +1,597 @@
+#include <psych.h>
+
+VALUE cPsychParser;
+VALUE ePsychSyntaxError;
+
+static ID id_read;
+static ID id_path;
+static ID id_empty;
+static ID id_start_stream;
+static ID id_end_stream;
+static ID id_start_document;
+static ID id_end_document;
+static ID id_alias;
+static ID id_scalar;
+static ID id_start_sequence;
+static ID id_end_sequence;
+static ID id_start_mapping;
+static ID id_end_mapping;
+
+#define PSYCH_TRANSCODE(_str, _yaml_enc, _internal_enc) \
+ do { \
+ rb_enc_associate_index((_str), (_yaml_enc)); \
+ if(_internal_enc) \
+ (_str) = rb_str_export_to_enc((_str), (_internal_enc)); \
+ } while (0)
+
+static int io_reader(void * data, unsigned char *buf, size_t size, size_t *read)
+{
+ VALUE io = (VALUE)data;
+ VALUE string = rb_funcall(io, id_read, 1, INT2NUM(size));
+
+ *read = 0;
+
+ if(! NIL_P(string)) {
+ void * str = (void *)StringValuePtr(string);
+ *read = (size_t)RSTRING_LEN(string);
+ memcpy(buf, str, *read);
+ }
+
+ return 1;
+}
+
+static void dealloc(void * ptr)
+{
+ yaml_parser_t * parser;
+
+ parser = (yaml_parser_t *)ptr;
+ yaml_parser_delete(parser);
+ xfree(parser);
+}
+
+#if 0
+static size_t memsize(const void *ptr)
+{
+ const yaml_parser_t *parser = ptr;
+ /* TODO: calculate parser's size */
+ return 0;
+}
+#endif
+
+static const rb_data_type_t psych_parser_type = {
+ "Psych/parser",
+ {0, dealloc, 0,},
+ 0, 0,
+#ifdef RUBY_TYPED_FREE_IMMEDIATELY
+ RUBY_TYPED_FREE_IMMEDIATELY,
+#endif
+};
+
+static VALUE allocate(VALUE klass)
+{
+ yaml_parser_t * parser;
+
+ parser = xmalloc(sizeof(yaml_parser_t));
+ yaml_parser_initialize(parser);
+
+ return TypedData_Wrap_Struct(klass, &psych_parser_type, parser);
+}
+
+static VALUE make_exception(yaml_parser_t * parser, VALUE path)
+{
+ size_t line, column;
+
+ line = parser->context_mark.line + 1;
+ column = parser->context_mark.column + 1;
+
+ return rb_funcall(ePsychSyntaxError, rb_intern("new"), 6,
+ path,
+ INT2NUM(line),
+ INT2NUM(column),
+ INT2NUM(parser->problem_offset),
+ parser->problem ? rb_usascii_str_new2(parser->problem) : Qnil,
+ parser->context ? rb_usascii_str_new2(parser->context) : Qnil);
+}
+
+#ifdef HAVE_RUBY_ENCODING_H
+static VALUE transcode_string(VALUE src, int * parser_encoding)
+{
+ int utf8 = rb_utf8_encindex();
+ int utf16le = rb_enc_find_index("UTF-16LE");
+ int utf16be = rb_enc_find_index("UTF-16BE");
+ int source_encoding = rb_enc_get_index(src);
+
+ if (source_encoding == utf8) {
+ *parser_encoding = YAML_UTF8_ENCODING;
+ return src;
+ }
+
+ if (source_encoding == utf16le) {
+ *parser_encoding = YAML_UTF16LE_ENCODING;
+ return src;
+ }
+
+ if (source_encoding == utf16be) {
+ *parser_encoding = YAML_UTF16BE_ENCODING;
+ return src;
+ }
+
+ src = rb_str_export_to_enc(src, rb_utf8_encoding());
+ RB_GC_GUARD(src);
+
+ *parser_encoding = YAML_UTF8_ENCODING;
+ return src;
+}
+
+static VALUE transcode_io(VALUE src, int * parser_encoding)
+{
+ VALUE io_external_encoding;
+ int io_external_enc_index;
+
+ io_external_encoding = rb_funcall(src, rb_intern("external_encoding"), 0);
+
+ /* if no encoding is returned, assume ascii8bit. */
+ if (NIL_P(io_external_encoding)) {
+ io_external_enc_index = rb_ascii8bit_encindex();
+ } else {
+ io_external_enc_index = rb_to_encoding_index(io_external_encoding);
+ }
+
+ /* Treat US-ASCII as utf_8 */
+ if (io_external_enc_index == rb_usascii_encindex()) {
+ *parser_encoding = YAML_UTF8_ENCODING;
+ return src;
+ }
+
+ if (io_external_enc_index == rb_utf8_encindex()) {
+ *parser_encoding = YAML_UTF8_ENCODING;
+ return src;
+ }
+
+ if (io_external_enc_index == rb_enc_find_index("UTF-16LE")) {
+ *parser_encoding = YAML_UTF16LE_ENCODING;
+ return src;
+ }
+
+ if (io_external_enc_index == rb_enc_find_index("UTF-16BE")) {
+ *parser_encoding = YAML_UTF16BE_ENCODING;
+ return src;
+ }
+
+ /* Just guess on ASCII-8BIT */
+ if (io_external_enc_index == rb_ascii8bit_encindex()) {
+ *parser_encoding = YAML_ANY_ENCODING;
+ return src;
+ }
+
+ /* If the external encoding is something we don't know how to handle,
+ * fall back to YAML_ANY_ENCODING. */
+ *parser_encoding = YAML_ANY_ENCODING;
+
+ return src;
+}
+
+#endif
+
+static VALUE protected_start_stream(VALUE pointer)
+{
+ VALUE *args = (VALUE *)pointer;
+ return rb_funcall(args[0], id_start_stream, 1, args[1]);
+}
+
+static VALUE protected_start_document(VALUE pointer)
+{
+ VALUE *args = (VALUE *)pointer;
+ return rb_funcall3(args[0], id_start_document, 3, args + 1);
+}
+
+static VALUE protected_end_document(VALUE pointer)
+{
+ VALUE *args = (VALUE *)pointer;
+ return rb_funcall(args[0], id_end_document, 1, args[1]);
+}
+
+static VALUE protected_alias(VALUE pointer)
+{
+ VALUE *args = (VALUE *)pointer;
+ return rb_funcall(args[0], id_alias, 1, args[1]);
+}
+
+static VALUE protected_scalar(VALUE pointer)
+{
+ VALUE *args = (VALUE *)pointer;
+ return rb_funcall3(args[0], id_scalar, 6, args + 1);
+}
+
+static VALUE protected_start_sequence(VALUE pointer)
+{
+ VALUE *args = (VALUE *)pointer;
+ return rb_funcall3(args[0], id_start_sequence, 4, args + 1);
+}
+
+static VALUE protected_end_sequence(VALUE handler)
+{
+ return rb_funcall(handler, id_end_sequence, 0);
+}
+
+static VALUE protected_start_mapping(VALUE pointer)
+{
+ VALUE *args = (VALUE *)pointer;
+ return rb_funcall3(args[0], id_start_mapping, 4, args + 1);
+}
+
+static VALUE protected_end_mapping(VALUE handler)
+{
+ return rb_funcall(handler, id_end_mapping, 0);
+}
+
+static VALUE protected_empty(VALUE handler)
+{
+ return rb_funcall(handler, id_empty, 0);
+}
+
+static VALUE protected_end_stream(VALUE handler)
+{
+ return rb_funcall(handler, id_end_stream, 0);
+}
+
+/*
+ * call-seq:
+ * parser.parse(yaml)
+ *
+ * Parse the YAML document contained in +yaml+. Events will be called on
+ * the handler set on the parser instance.
+ *
+ * See Psych::Parser and Psych::Parser#handler
+ */
+static VALUE parse(int argc, VALUE *argv, VALUE self)
+{
+ VALUE yaml, path;
+ yaml_parser_t * parser;
+ yaml_event_t event;
+ int done = 0;
+ int tainted = 0;
+ int state = 0;
+ int parser_encoding = YAML_ANY_ENCODING;
+#ifdef HAVE_RUBY_ENCODING_H
+ int encoding = rb_utf8_encindex();
+ rb_encoding * internal_enc = rb_default_internal_encoding();
+#endif
+ VALUE handler = rb_iv_get(self, "@handler");
+
+ if (rb_scan_args(argc, argv, "11", &yaml, &path) == 1) {
+ if(rb_respond_to(yaml, id_path))
+ path = rb_funcall(yaml, id_path, 0);
+ else
+ path = rb_str_new2("<unknown>");
+ }
+
+ TypedData_Get_Struct(self, yaml_parser_t, &psych_parser_type, parser);
+
+ yaml_parser_delete(parser);
+ yaml_parser_initialize(parser);
+
+ if (OBJ_TAINTED(yaml)) tainted = 1;
+
+ if (rb_respond_to(yaml, id_read)) {
+#ifdef HAVE_RUBY_ENCODING_H
+ yaml = transcode_io(yaml, &parser_encoding);
+ yaml_parser_set_encoding(parser, parser_encoding);
+#endif
+ yaml_parser_set_input(parser, io_reader, (void *)yaml);
+ if (RTEST(rb_obj_is_kind_of(yaml, rb_cIO))) tainted = 1;
+ } else {
+ StringValue(yaml);
+#ifdef HAVE_RUBY_ENCODING_H
+ yaml = transcode_string(yaml, &parser_encoding);
+ yaml_parser_set_encoding(parser, parser_encoding);
+#endif
+ yaml_parser_set_input_string(
+ parser,
+ (const unsigned char *)RSTRING_PTR(yaml),
+ (size_t)RSTRING_LEN(yaml)
+ );
+ }
+
+ while(!done) {
+ if(!yaml_parser_parse(parser, &event)) {
+ VALUE exception;
+
+ exception = make_exception(parser, path);
+ yaml_parser_delete(parser);
+ yaml_parser_initialize(parser);
+
+ rb_exc_raise(exception);
+ }
+
+ switch(event.type) {
+ case YAML_STREAM_START_EVENT:
+ {
+ VALUE args[2];
+
+ args[0] = handler;
+ args[1] = INT2NUM((long)event.data.stream_start.encoding);
+ rb_protect(protected_start_stream, (VALUE)args, &state);
+ }
+ break;
+ case YAML_DOCUMENT_START_EVENT:
+ {
+ VALUE args[4];
+ /* Get a list of tag directives (if any) */
+ VALUE tag_directives = rb_ary_new();
+ /* Grab the document version */
+ VALUE version = event.data.document_start.version_directive ?
+ rb_ary_new3(
+ (long)2,
+ INT2NUM((long)event.data.document_start.version_directive->major),
+ INT2NUM((long)event.data.document_start.version_directive->minor)
+ ) : rb_ary_new();
+
+ if(event.data.document_start.tag_directives.start) {
+ yaml_tag_directive_t *start =
+ event.data.document_start.tag_directives.start;
+ yaml_tag_directive_t *end =
+ event.data.document_start.tag_directives.end;
+ for(; start != end; start++) {
+ VALUE handle = Qnil;
+ VALUE prefix = Qnil;
+ if(start->handle) {
+ handle = rb_str_new2((const char *)start->handle);
+ if (tainted) OBJ_TAINT(handle);
+#ifdef HAVE_RUBY_ENCODING_H
+ PSYCH_TRANSCODE(handle, encoding, internal_enc);
+#endif
+ }
+
+ if(start->prefix) {
+ prefix = rb_str_new2((const char *)start->prefix);
+ if (tainted) OBJ_TAINT(prefix);
+#ifdef HAVE_RUBY_ENCODING_H
+ PSYCH_TRANSCODE(prefix, encoding, internal_enc);
+#endif
+ }
+
+ rb_ary_push(tag_directives, rb_ary_new3((long)2, handle, prefix));
+ }
+ }
+ args[0] = handler;
+ args[1] = version;
+ args[2] = tag_directives;
+ args[3] = event.data.document_start.implicit == 1 ? Qtrue : Qfalse;
+ rb_protect(protected_start_document, (VALUE)args, &state);
+ }
+ break;
+ case YAML_DOCUMENT_END_EVENT:
+ {
+ VALUE args[2];
+
+ args[0] = handler;
+ args[1] = event.data.document_end.implicit == 1 ? Qtrue : Qfalse;
+ rb_protect(protected_end_document, (VALUE)args, &state);
+ }
+ break;
+ case YAML_ALIAS_EVENT:
+ {
+ VALUE args[2];
+ VALUE alias = Qnil;
+ if(event.data.alias.anchor) {
+ alias = rb_str_new2((const char *)event.data.alias.anchor);
+ if (tainted) OBJ_TAINT(alias);
+#ifdef HAVE_RUBY_ENCODING_H
+ PSYCH_TRANSCODE(alias, encoding, internal_enc);
+#endif
+ }
+
+ args[0] = handler;
+ args[1] = alias;
+ rb_protect(protected_alias, (VALUE)args, &state);
+ }
+ break;
+ case YAML_SCALAR_EVENT:
+ {
+ VALUE args[7];
+ VALUE anchor = Qnil;
+ VALUE tag = Qnil;
+ VALUE plain_implicit, quoted_implicit, style;
+ VALUE val = rb_str_new(
+ (const char *)event.data.scalar.value,
+ (long)event.data.scalar.length
+ );
+ if (tainted) OBJ_TAINT(val);
+
+#ifdef HAVE_RUBY_ENCODING_H
+ PSYCH_TRANSCODE(val, encoding, internal_enc);
+#endif
+
+ if(event.data.scalar.anchor) {
+ anchor = rb_str_new2((const char *)event.data.scalar.anchor);
+ if (tainted) OBJ_TAINT(anchor);
+#ifdef HAVE_RUBY_ENCODING_H
+ PSYCH_TRANSCODE(anchor, encoding, internal_enc);
+#endif
+ }
+
+ if(event.data.scalar.tag) {
+ tag = rb_str_new2((const char *)event.data.scalar.tag);
+ if (tainted) OBJ_TAINT(tag);
+#ifdef HAVE_RUBY_ENCODING_H
+ PSYCH_TRANSCODE(tag, encoding, internal_enc);
+#endif
+ }
+
+ plain_implicit =
+ event.data.scalar.plain_implicit == 0 ? Qfalse : Qtrue;
+
+ quoted_implicit =
+ event.data.scalar.quoted_implicit == 0 ? Qfalse : Qtrue;
+
+ style = INT2NUM((long)event.data.scalar.style);
+
+ args[0] = handler;
+ args[1] = val;
+ args[2] = anchor;
+ args[3] = tag;
+ args[4] = plain_implicit;
+ args[5] = quoted_implicit;
+ args[6] = style;
+ rb_protect(protected_scalar, (VALUE)args, &state);
+ }
+ break;
+ case YAML_SEQUENCE_START_EVENT:
+ {
+ VALUE args[5];
+ VALUE anchor = Qnil;
+ VALUE tag = Qnil;
+ VALUE implicit, style;
+ if(event.data.sequence_start.anchor) {
+ anchor = rb_str_new2((const char *)event.data.sequence_start.anchor);
+ if (tainted) OBJ_TAINT(anchor);
+#ifdef HAVE_RUBY_ENCODING_H
+ PSYCH_TRANSCODE(anchor, encoding, internal_enc);
+#endif
+ }
+
+ tag = Qnil;
+ if(event.data.sequence_start.tag) {
+ tag = rb_str_new2((const char *)event.data.sequence_start.tag);
+ if (tainted) OBJ_TAINT(tag);
+#ifdef HAVE_RUBY_ENCODING_H
+ PSYCH_TRANSCODE(tag, encoding, internal_enc);
+#endif
+ }
+
+ implicit =
+ event.data.sequence_start.implicit == 0 ? Qfalse : Qtrue;
+
+ style = INT2NUM((long)event.data.sequence_start.style);
+
+ args[0] = handler;
+ args[1] = anchor;
+ args[2] = tag;
+ args[3] = implicit;
+ args[4] = style;
+
+ rb_protect(protected_start_sequence, (VALUE)args, &state);
+ }
+ break;
+ case YAML_SEQUENCE_END_EVENT:
+ rb_protect(protected_end_sequence, handler, &state);
+ break;
+ case YAML_MAPPING_START_EVENT:
+ {
+ VALUE args[5];
+ VALUE anchor = Qnil;
+ VALUE tag = Qnil;
+ VALUE implicit, style;
+ if(event.data.mapping_start.anchor) {
+ anchor = rb_str_new2((const char *)event.data.mapping_start.anchor);
+ if (tainted) OBJ_TAINT(anchor);
+#ifdef HAVE_RUBY_ENCODING_H
+ PSYCH_TRANSCODE(anchor, encoding, internal_enc);
+#endif
+ }
+
+ if(event.data.mapping_start.tag) {
+ tag = rb_str_new2((const char *)event.data.mapping_start.tag);
+ if (tainted) OBJ_TAINT(tag);
+#ifdef HAVE_RUBY_ENCODING_H
+ PSYCH_TRANSCODE(tag, encoding, internal_enc);
+#endif
+ }
+
+ implicit =
+ event.data.mapping_start.implicit == 0 ? Qfalse : Qtrue;
+
+ style = INT2NUM((long)event.data.mapping_start.style);
+
+ args[0] = handler;
+ args[1] = anchor;
+ args[2] = tag;
+ args[3] = implicit;
+ args[4] = style;
+
+ rb_protect(protected_start_mapping, (VALUE)args, &state);
+ }
+ break;
+ case YAML_MAPPING_END_EVENT:
+ rb_protect(protected_end_mapping, handler, &state);
+ break;
+ case YAML_NO_EVENT:
+ rb_protect(protected_empty, handler, &state);
+ break;
+ case YAML_STREAM_END_EVENT:
+ rb_protect(protected_end_stream, handler, &state);
+ done = 1;
+ break;
+ }
+ yaml_event_delete(&event);
+ if (state) rb_jump_tag(state);
+ }
+
+ return self;
+}
+
+/*
+ * call-seq:
+ * parser.mark # => #<Psych::Parser::Mark>
+ *
+ * Returns a Psych::Parser::Mark object that contains line, column, and index
+ * information.
+ */
+static VALUE mark(VALUE self)
+{
+ VALUE mark_klass;
+ VALUE args[3];
+ yaml_parser_t * parser;
+
+ TypedData_Get_Struct(self, yaml_parser_t, &psych_parser_type, parser);
+ mark_klass = rb_const_get_at(cPsychParser, rb_intern("Mark"));
+ args[0] = INT2NUM(parser->mark.index);
+ args[1] = INT2NUM(parser->mark.line);
+ args[2] = INT2NUM(parser->mark.column);
+
+ return rb_class_new_instance(3, args, mark_klass);
+}
+
+void Init_psych_parser(void)
+{
+#if 0
+ mPsych = rb_define_module("Psych");
+#endif
+
+ cPsychParser = rb_define_class_under(mPsych, "Parser", rb_cObject);
+ rb_define_alloc_func(cPsychParser, allocate);
+
+ /* Any encoding: Let the parser choose the encoding */
+ rb_define_const(cPsychParser, "ANY", INT2NUM(YAML_ANY_ENCODING));
+
+ /* UTF-8 Encoding */
+ rb_define_const(cPsychParser, "UTF8", INT2NUM(YAML_UTF8_ENCODING));
+
+ /* UTF-16-LE Encoding with BOM */
+ rb_define_const(cPsychParser, "UTF16LE", INT2NUM(YAML_UTF16LE_ENCODING));
+
+ /* UTF-16-BE Encoding with BOM */
+ rb_define_const(cPsychParser, "UTF16BE", INT2NUM(YAML_UTF16BE_ENCODING));
+
+ rb_require("psych/syntax_error");
+ ePsychSyntaxError = rb_const_get(mPsych, rb_intern("SyntaxError"));
+
+ rb_define_method(cPsychParser, "parse", parse, -1);
+ rb_define_method(cPsychParser, "mark", mark, 0);
+
+ id_read = rb_intern("read");
+ id_path = rb_intern("path");
+ id_empty = rb_intern("empty");
+ id_start_stream = rb_intern("start_stream");
+ id_end_stream = rb_intern("end_stream");
+ id_start_document = rb_intern("start_document");
+ id_end_document = rb_intern("end_document");
+ id_alias = rb_intern("alias");
+ id_scalar = rb_intern("scalar");
+ id_start_sequence = rb_intern("start_sequence");
+ id_end_sequence = rb_intern("end_sequence");
+ id_start_mapping = rb_intern("start_mapping");
+ id_end_mapping = rb_intern("end_mapping");
+}
+/* vim: set noet sws=4 sw=4: */
diff --git a/jni/ruby/ext/psych/psych_parser.h b/jni/ruby/ext/psych/psych_parser.h
new file mode 100644
index 0000000..beb3dd0
--- /dev/null
+++ b/jni/ruby/ext/psych/psych_parser.h
@@ -0,0 +1,6 @@
+#ifndef PSYCH_PARSER_H
+#define PSYCH_PARSER_H
+
+void Init_psych_parser(void);
+
+#endif
diff --git a/jni/ruby/ext/psych/psych_to_ruby.c b/jni/ruby/ext/psych/psych_to_ruby.c
new file mode 100644
index 0000000..3cc87a9
--- /dev/null
+++ b/jni/ruby/ext/psych/psych_to_ruby.c
@@ -0,0 +1,43 @@
+#include <psych.h>
+
+VALUE cPsychVisitorsToRuby;
+
+/* call-seq: vis.build_exception(klass, message)
+ *
+ * Create an exception with class +klass+ and +message+
+ */
+static VALUE build_exception(VALUE self, VALUE klass, VALUE mesg)
+{
+ VALUE e = rb_obj_alloc(klass);
+
+ rb_iv_set(e, "mesg", mesg);
+
+ return e;
+}
+
+/* call-seq: vis.path2class(path)
+ *
+ * Convert +path+ string to a class
+ */
+static VALUE path2class(VALUE self, VALUE path)
+{
+#ifdef HAVE_RUBY_ENCODING_H
+ return rb_path_to_class(path);
+#else
+ return rb_path2class(StringValuePtr(path));
+#endif
+}
+
+void Init_psych_to_ruby(void)
+{
+ VALUE psych = rb_define_module("Psych");
+ VALUE class_loader = rb_define_class_under(psych, "ClassLoader", rb_cObject);
+
+ VALUE visitors = rb_define_module_under(psych, "Visitors");
+ VALUE visitor = rb_define_class_under(visitors, "Visitor", rb_cObject);
+ cPsychVisitorsToRuby = rb_define_class_under(visitors, "ToRuby", visitor);
+
+ rb_define_private_method(cPsychVisitorsToRuby, "build_exception", build_exception, 2);
+ rb_define_private_method(class_loader, "path2class", path2class, 1);
+}
+/* vim: set noet sws=4 sw=4: */
diff --git a/jni/ruby/ext/psych/psych_to_ruby.h b/jni/ruby/ext/psych/psych_to_ruby.h
new file mode 100644
index 0000000..7b8e757
--- /dev/null
+++ b/jni/ruby/ext/psych/psych_to_ruby.h
@@ -0,0 +1,8 @@
+#ifndef PSYCH_TO_RUBY_H
+#define PSYCH_TO_RUBY_H
+
+#include <psych.h>
+
+void Init_psych_to_ruby(void);
+
+#endif
diff --git a/jni/ruby/ext/psych/psych_yaml_tree.c b/jni/ruby/ext/psych/psych_yaml_tree.c
new file mode 100644
index 0000000..bcf24d2
--- /dev/null
+++ b/jni/ruby/ext/psych/psych_yaml_tree.c
@@ -0,0 +1,24 @@
+#include <psych.h>
+
+VALUE cPsychVisitorsYamlTree;
+
+/*
+ * call-seq: private_iv_get(target, prop)
+ *
+ * Get the private instance variable +prop+ from +target+
+ */
+static VALUE private_iv_get(VALUE self, VALUE target, VALUE prop)
+{
+ return rb_attr_get(target, rb_intern(StringValuePtr(prop)));
+}
+
+void Init_psych_yaml_tree(void)
+{
+ VALUE psych = rb_define_module("Psych");
+ VALUE visitors = rb_define_module_under(psych, "Visitors");
+ VALUE visitor = rb_define_class_under(visitors, "Visitor", rb_cObject);
+ cPsychVisitorsYamlTree = rb_define_class_under(visitors, "YAMLTree", visitor);
+
+ rb_define_private_method(cPsychVisitorsYamlTree, "private_iv_get", private_iv_get, 2);
+}
+/* vim: set noet sws=4 sw=4: */
diff --git a/jni/ruby/ext/psych/psych_yaml_tree.h b/jni/ruby/ext/psych/psych_yaml_tree.h
new file mode 100644
index 0000000..4628a69
--- /dev/null
+++ b/jni/ruby/ext/psych/psych_yaml_tree.h
@@ -0,0 +1,8 @@
+#ifndef PSYCH_YAML_TREE_H
+#define PSYCH_YAML_TREE_H
+
+#include <psych.h>
+
+void Init_psych_yaml_tree(void);
+
+#endif
diff --git a/jni/ruby/ext/psych/yaml/LICENSE b/jni/ruby/ext/psych/yaml/LICENSE
new file mode 100644
index 0000000..050ced2
--- /dev/null
+++ b/jni/ruby/ext/psych/yaml/LICENSE
@@ -0,0 +1,19 @@
+Copyright (c) 2006 Kirill Simonov
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/jni/ruby/ext/psych/yaml/api.c b/jni/ruby/ext/psych/yaml/api.c
new file mode 100644
index 0000000..e0b9d97
--- /dev/null
+++ b/jni/ruby/ext/psych/yaml/api.c
@@ -0,0 +1,1415 @@
+
+#include "yaml_private.h"
+
+/*
+ * Get the library version.
+ */
+
+YAML_DECLARE(const char *)
+yaml_get_version_string(void)
+{
+ return YAML_VERSION_STRING;
+}
+
+/*
+ * Get the library version numbers.
+ */
+
+YAML_DECLARE(void)
+yaml_get_version(int *major, int *minor, int *patch)
+{
+ *major = YAML_VERSION_MAJOR;
+ *minor = YAML_VERSION_MINOR;
+ *patch = YAML_VERSION_PATCH;
+}
+
+/*
+ * Allocate a dynamic memory block.
+ */
+
+YAML_DECLARE(void *)
+yaml_malloc(size_t size)
+{
+ return malloc(size ? size : 1);
+}
+
+/*
+ * Reallocate a dynamic memory block.
+ */
+
+YAML_DECLARE(void *)
+yaml_realloc(void *ptr, size_t size)
+{
+ return ptr ? realloc(ptr, size ? size : 1) : malloc(size ? size : 1);
+}
+
+/*
+ * Free a dynamic memory block.
+ */
+
+YAML_DECLARE(void)
+yaml_free(void *ptr)
+{
+ if (ptr) free(ptr);
+}
+
+/*
+ * Duplicate a string.
+ */
+
+YAML_DECLARE(yaml_char_t *)
+yaml_strdup(const yaml_char_t *str)
+{
+ if (!str)
+ return NULL;
+
+ return (yaml_char_t *)strdup((char *)str);
+}
+
+/*
+ * Extend a string.
+ */
+
+YAML_DECLARE(int)
+yaml_string_extend(yaml_char_t **start,
+ yaml_char_t **pointer, yaml_char_t **end)
+{
+ yaml_char_t *new_start = yaml_realloc(*start, (*end - *start)*2);
+
+ if (!new_start) return 0;
+
+ memset(new_start + (*end - *start), 0, *end - *start);
+
+ *pointer = new_start + (*pointer - *start);
+ *end = new_start + (*end - *start)*2;
+ *start = new_start;
+
+ return 1;
+}
+
+/*
+ * Append a string B to a string A.
+ */
+
+YAML_DECLARE(int)
+yaml_string_join(
+ yaml_char_t **a_start, yaml_char_t **a_pointer, yaml_char_t **a_end,
+ yaml_char_t **b_start, yaml_char_t **b_pointer, yaml_char_t **b_end)
+{
+ if (*b_start == *b_pointer)
+ return 1;
+
+ while (*a_end - *a_pointer <= *b_pointer - *b_start) {
+ if (!yaml_string_extend(a_start, a_pointer, a_end))
+ return 0;
+ }
+
+ memcpy(*a_pointer, *b_start, *b_pointer - *b_start);
+ *a_pointer += *b_pointer - *b_start;
+
+ return 1;
+}
+
+/*
+ * Extend a stack.
+ */
+
+YAML_DECLARE(int)
+yaml_stack_extend(void **start, void **top, void **end)
+{
+ void *new_start = yaml_realloc(*start, ((char *)*end - (char *)*start)*2);
+
+ if (!new_start) return 0;
+
+ *top = (char *)new_start + ((char *)*top - (char *)*start);
+ *end = (char *)new_start + ((char *)*end - (char *)*start)*2;
+ *start = new_start;
+
+ return 1;
+}
+
+/*
+ * Extend or move a queue.
+ */
+
+YAML_DECLARE(int)
+yaml_queue_extend(void **start, void **head, void **tail, void **end)
+{
+ /* Check if we need to resize the queue. */
+
+ if (*start == *head && *tail == *end) {
+ void *new_start = yaml_realloc(*start,
+ ((char *)*end - (char *)*start)*2);
+
+ if (!new_start) return 0;
+
+ *head = (char *)new_start + ((char *)*head - (char *)*start);
+ *tail = (char *)new_start + ((char *)*tail - (char *)*start);
+ *end = (char *)new_start + ((char *)*end - (char *)*start)*2;
+ *start = new_start;
+ }
+
+ /* Check if we need to move the queue at the beginning of the buffer. */
+
+ if (*tail == *end) {
+ if (*head != *tail) {
+ memmove(*start, *head, (char *)*tail - (char *)*head);
+ }
+ *tail = (char *)*tail - (char *)*head + (char *)*start;
+ *head = *start;
+ }
+
+ return 1;
+}
+
+
+/*
+ * Create a new parser object.
+ */
+
+YAML_DECLARE(int)
+yaml_parser_initialize(yaml_parser_t *parser)
+{
+ assert(parser); /* Non-NULL parser object expected. */
+
+ memset(parser, 0, sizeof(yaml_parser_t));
+ if (!BUFFER_INIT(parser, parser->raw_buffer, INPUT_RAW_BUFFER_SIZE))
+ goto error;
+ if (!BUFFER_INIT(parser, parser->buffer, INPUT_BUFFER_SIZE))
+ goto error;
+ if (!QUEUE_INIT(parser, parser->tokens, INITIAL_QUEUE_SIZE))
+ goto error;
+ if (!STACK_INIT(parser, parser->indents, INITIAL_STACK_SIZE))
+ goto error;
+ if (!STACK_INIT(parser, parser->simple_keys, INITIAL_STACK_SIZE))
+ goto error;
+ if (!STACK_INIT(parser, parser->states, INITIAL_STACK_SIZE))
+ goto error;
+ if (!STACK_INIT(parser, parser->marks, INITIAL_STACK_SIZE))
+ goto error;
+ if (!STACK_INIT(parser, parser->tag_directives, INITIAL_STACK_SIZE))
+ goto error;
+
+ return 1;
+
+error:
+
+ BUFFER_DEL(parser, parser->raw_buffer);
+ BUFFER_DEL(parser, parser->buffer);
+ QUEUE_DEL(parser, parser->tokens);
+ STACK_DEL(parser, parser->indents);
+ STACK_DEL(parser, parser->simple_keys);
+ STACK_DEL(parser, parser->states);
+ STACK_DEL(parser, parser->marks);
+ STACK_DEL(parser, parser->tag_directives);
+
+ return 0;
+}
+
+/*
+ * Destroy a parser object.
+ */
+
+YAML_DECLARE(void)
+yaml_parser_delete(yaml_parser_t *parser)
+{
+ assert(parser); /* Non-NULL parser object expected. */
+
+ BUFFER_DEL(parser, parser->raw_buffer);
+ BUFFER_DEL(parser, parser->buffer);
+ while (!QUEUE_EMPTY(parser, parser->tokens)) {
+ yaml_token_delete(&DEQUEUE(parser, parser->tokens));
+ }
+ QUEUE_DEL(parser, parser->tokens);
+ STACK_DEL(parser, parser->indents);
+ STACK_DEL(parser, parser->simple_keys);
+ STACK_DEL(parser, parser->states);
+ STACK_DEL(parser, parser->marks);
+ while (!STACK_EMPTY(parser, parser->tag_directives)) {
+ yaml_tag_directive_t tag_directive = POP(parser, parser->tag_directives);
+ yaml_free(tag_directive.handle);
+ yaml_free(tag_directive.prefix);
+ }
+ STACK_DEL(parser, parser->tag_directives);
+
+ memset(parser, 0, sizeof(yaml_parser_t));
+}
+
+/*
+ * String read handler.
+ */
+
+static int
+yaml_string_read_handler(void *data, unsigned char *buffer, size_t size,
+ size_t *size_read)
+{
+ yaml_parser_t *parser = data;
+
+ if (parser->input.string.current == parser->input.string.end) {
+ *size_read = 0;
+ return 1;
+ }
+
+ if (size > (size_t)(parser->input.string.end
+ - parser->input.string.current)) {
+ size = parser->input.string.end - parser->input.string.current;
+ }
+
+ memcpy(buffer, parser->input.string.current, size);
+ parser->input.string.current += size;
+ *size_read = size;
+ return 1;
+}
+
+/*
+ * File read handler.
+ */
+
+static int
+yaml_file_read_handler(void *data, unsigned char *buffer, size_t size,
+ size_t *size_read)
+{
+ yaml_parser_t *parser = data;
+
+ *size_read = fread(buffer, 1, size, parser->input.file);
+ return !ferror(parser->input.file);
+}
+
+/*
+ * Set a string input.
+ */
+
+YAML_DECLARE(void)
+yaml_parser_set_input_string(yaml_parser_t *parser,
+ const unsigned char *input, size_t size)
+{
+ assert(parser); /* Non-NULL parser object expected. */
+ assert(!parser->read_handler); /* You can set the source only once. */
+ assert(input); /* Non-NULL input string expected. */
+
+ parser->read_handler = yaml_string_read_handler;
+ parser->read_handler_data = parser;
+
+ parser->input.string.start = input;
+ parser->input.string.current = input;
+ parser->input.string.end = input+size;
+}
+
+/*
+ * Set a file input.
+ */
+
+YAML_DECLARE(void)
+yaml_parser_set_input_file(yaml_parser_t *parser, FILE *file)
+{
+ assert(parser); /* Non-NULL parser object expected. */
+ assert(!parser->read_handler); /* You can set the source only once. */
+ assert(file); /* Non-NULL file object expected. */
+
+ parser->read_handler = yaml_file_read_handler;
+ parser->read_handler_data = parser;
+
+ parser->input.file = file;
+}
+
+/*
+ * Set a generic input.
+ */
+
+YAML_DECLARE(void)
+yaml_parser_set_input(yaml_parser_t *parser,
+ yaml_read_handler_t *handler, void *data)
+{
+ assert(parser); /* Non-NULL parser object expected. */
+ assert(!parser->read_handler); /* You can set the source only once. */
+ assert(handler); /* Non-NULL read handler expected. */
+
+ parser->read_handler = handler;
+ parser->read_handler_data = data;
+}
+
+/*
+ * Set the source encoding.
+ */
+
+YAML_DECLARE(void)
+yaml_parser_set_encoding(yaml_parser_t *parser, yaml_encoding_t encoding)
+{
+ assert(parser); /* Non-NULL parser object expected. */
+ assert(!parser->encoding); /* Encoding is already set or detected. */
+
+ parser->encoding = encoding;
+}
+
+/*
+ * Create a new emitter object.
+ */
+
+YAML_DECLARE(int)
+yaml_emitter_initialize(yaml_emitter_t *emitter)
+{
+ assert(emitter); /* Non-NULL emitter object expected. */
+
+ memset(emitter, 0, sizeof(yaml_emitter_t));
+ if (!BUFFER_INIT(emitter, emitter->buffer, OUTPUT_BUFFER_SIZE))
+ goto error;
+ if (!BUFFER_INIT(emitter, emitter->raw_buffer, OUTPUT_RAW_BUFFER_SIZE))
+ goto error;
+ if (!STACK_INIT(emitter, emitter->states, INITIAL_STACK_SIZE))
+ goto error;
+ if (!QUEUE_INIT(emitter, emitter->events, INITIAL_QUEUE_SIZE))
+ goto error;
+ if (!STACK_INIT(emitter, emitter->indents, INITIAL_STACK_SIZE))
+ goto error;
+ if (!STACK_INIT(emitter, emitter->tag_directives, INITIAL_STACK_SIZE))
+ goto error;
+
+ return 1;
+
+error:
+
+ BUFFER_DEL(emitter, emitter->buffer);
+ BUFFER_DEL(emitter, emitter->raw_buffer);
+ STACK_DEL(emitter, emitter->states);
+ QUEUE_DEL(emitter, emitter->events);
+ STACK_DEL(emitter, emitter->indents);
+ STACK_DEL(emitter, emitter->tag_directives);
+
+ return 0;
+}
+
+/*
+ * Destroy an emitter object.
+ */
+
+YAML_DECLARE(void)
+yaml_emitter_delete(yaml_emitter_t *emitter)
+{
+ assert(emitter); /* Non-NULL emitter object expected. */
+
+ BUFFER_DEL(emitter, emitter->buffer);
+ BUFFER_DEL(emitter, emitter->raw_buffer);
+ STACK_DEL(emitter, emitter->states);
+ while (!QUEUE_EMPTY(emitter, emitter->events)) {
+ yaml_event_delete(&DEQUEUE(emitter, emitter->events));
+ }
+ QUEUE_DEL(emitter, emitter->events);
+ STACK_DEL(emitter, emitter->indents);
+ while (!STACK_EMPTY(emitter, emitter->tag_directives)) {
+ yaml_tag_directive_t tag_directive = POP(emitter, emitter->tag_directives);
+ yaml_free(tag_directive.handle);
+ yaml_free(tag_directive.prefix);
+ }
+ STACK_DEL(emitter, emitter->tag_directives);
+ yaml_free(emitter->anchors);
+
+ memset(emitter, 0, sizeof(yaml_emitter_t));
+}
+
+/*
+ * String write handler.
+ */
+
+static int
+yaml_string_write_handler(void *data, unsigned char *buffer, size_t size)
+{
+ yaml_emitter_t *emitter = data;
+
+ if (emitter->output.string.size + *emitter->output.string.size_written
+ < size) {
+ memcpy(emitter->output.string.buffer
+ + *emitter->output.string.size_written,
+ buffer,
+ emitter->output.string.size
+ - *emitter->output.string.size_written);
+ *emitter->output.string.size_written = emitter->output.string.size;
+ return 0;
+ }
+
+ memcpy(emitter->output.string.buffer
+ + *emitter->output.string.size_written, buffer, size);
+ *emitter->output.string.size_written += size;
+ return 1;
+}
+
+/*
+ * File write handler.
+ */
+
+static int
+yaml_file_write_handler(void *data, unsigned char *buffer, size_t size)
+{
+ yaml_emitter_t *emitter = data;
+
+ return (fwrite(buffer, 1, size, emitter->output.file) == size);
+}
+/*
+ * Set a string output.
+ */
+
+YAML_DECLARE(void)
+yaml_emitter_set_output_string(yaml_emitter_t *emitter,
+ unsigned char *output, size_t size, size_t *size_written)
+{
+ assert(emitter); /* Non-NULL emitter object expected. */
+ assert(!emitter->write_handler); /* You can set the output only once. */
+ assert(output); /* Non-NULL output string expected. */
+
+ emitter->write_handler = yaml_string_write_handler;
+ emitter->write_handler_data = emitter;
+
+ emitter->output.string.buffer = output;
+ emitter->output.string.size = size;
+ emitter->output.string.size_written = size_written;
+ *size_written = 0;
+}
+
+/*
+ * Set a file output.
+ */
+
+YAML_DECLARE(void)
+yaml_emitter_set_output_file(yaml_emitter_t *emitter, FILE *file)
+{
+ assert(emitter); /* Non-NULL emitter object expected. */
+ assert(!emitter->write_handler); /* You can set the output only once. */
+ assert(file); /* Non-NULL file object expected. */
+
+ emitter->write_handler = yaml_file_write_handler;
+ emitter->write_handler_data = emitter;
+
+ emitter->output.file = file;
+}
+
+/*
+ * Set a generic output handler.
+ */
+
+YAML_DECLARE(void)
+yaml_emitter_set_output(yaml_emitter_t *emitter,
+ yaml_write_handler_t *handler, void *data)
+{
+ assert(emitter); /* Non-NULL emitter object expected. */
+ assert(!emitter->write_handler); /* You can set the output only once. */
+ assert(handler); /* Non-NULL handler object expected. */
+
+ emitter->write_handler = handler;
+ emitter->write_handler_data = data;
+}
+
+/*
+ * Set the output encoding.
+ */
+
+YAML_DECLARE(void)
+yaml_emitter_set_encoding(yaml_emitter_t *emitter, yaml_encoding_t encoding)
+{
+ assert(emitter); /* Non-NULL emitter object expected. */
+ assert(!emitter->encoding); /* You can set encoding only once. */
+
+ emitter->encoding = encoding;
+}
+
+/*
+ * Set the canonical output style.
+ */
+
+YAML_DECLARE(void)
+yaml_emitter_set_canonical(yaml_emitter_t *emitter, int canonical)
+{
+ assert(emitter); /* Non-NULL emitter object expected. */
+
+ emitter->canonical = (canonical != 0);
+}
+
+/*
+ * Set the indentation increment.
+ */
+
+YAML_DECLARE(void)
+yaml_emitter_set_indent(yaml_emitter_t *emitter, int indent)
+{
+ assert(emitter); /* Non-NULL emitter object expected. */
+
+ emitter->best_indent = (1 < indent && indent < 10) ? indent : 2;
+}
+
+/*
+ * Set the preferred line width.
+ */
+
+YAML_DECLARE(void)
+yaml_emitter_set_width(yaml_emitter_t *emitter, int width)
+{
+ assert(emitter); /* Non-NULL emitter object expected. */
+
+ emitter->best_width = (width >= 0) ? width : -1;
+}
+
+/*
+ * Set if unescaped non-ASCII characters are allowed.
+ */
+
+YAML_DECLARE(void)
+yaml_emitter_set_unicode(yaml_emitter_t *emitter, int unicode)
+{
+ assert(emitter); /* Non-NULL emitter object expected. */
+
+ emitter->unicode = (unicode != 0);
+}
+
+/*
+ * Set the preferred line break character.
+ */
+
+YAML_DECLARE(void)
+yaml_emitter_set_break(yaml_emitter_t *emitter, yaml_break_t line_break)
+{
+ assert(emitter); /* Non-NULL emitter object expected. */
+
+ emitter->line_break = line_break;
+}
+
+/*
+ * Destroy a token object.
+ */
+
+YAML_DECLARE(void)
+yaml_token_delete(yaml_token_t *token)
+{
+ assert(token); /* Non-NULL token object expected. */
+
+ switch (token->type)
+ {
+ case YAML_TAG_DIRECTIVE_TOKEN:
+ yaml_free(token->data.tag_directive.handle);
+ yaml_free(token->data.tag_directive.prefix);
+ break;
+
+ case YAML_ALIAS_TOKEN:
+ yaml_free(token->data.alias.value);
+ break;
+
+ case YAML_ANCHOR_TOKEN:
+ yaml_free(token->data.anchor.value);
+ break;
+
+ case YAML_TAG_TOKEN:
+ yaml_free(token->data.tag.handle);
+ yaml_free(token->data.tag.suffix);
+ break;
+
+ case YAML_SCALAR_TOKEN:
+ yaml_free(token->data.scalar.value);
+ break;
+
+ default:
+ break;
+ }
+
+ memset(token, 0, sizeof(yaml_token_t));
+}
+
+/*
+ * Check if a string is a valid UTF-8 sequence.
+ *
+ * Check 'reader.c' for more details on UTF-8 encoding.
+ */
+
+static int
+yaml_check_utf8(yaml_char_t *start, size_t length)
+{
+ yaml_char_t *end = start+length;
+ yaml_char_t *pointer = start;
+
+ while (pointer < end) {
+ unsigned char octet;
+ unsigned int width;
+ unsigned int value;
+ size_t k;
+
+ octet = pointer[0];
+ width = (octet & 0x80) == 0x00 ? 1 :
+ (octet & 0xE0) == 0xC0 ? 2 :
+ (octet & 0xF0) == 0xE0 ? 3 :
+ (octet & 0xF8) == 0xF0 ? 4 : 0;
+ value = (octet & 0x80) == 0x00 ? octet & 0x7F :
+ (octet & 0xE0) == 0xC0 ? octet & 0x1F :
+ (octet & 0xF0) == 0xE0 ? octet & 0x0F :
+ (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;
+ if (!width) return 0;
+ if (pointer+width > end) return 0;
+ for (k = 1; k < width; k ++) {
+ octet = pointer[k];
+ if ((octet & 0xC0) != 0x80) return 0;
+ value = (value << 6) + (octet & 0x3F);
+ }
+ if (!((width == 1) ||
+ (width == 2 && value >= 0x80) ||
+ (width == 3 && value >= 0x800) ||
+ (width == 4 && value >= 0x10000))) return 0;
+
+ pointer += width;
+ }
+
+ return 1;
+}
+
+/*
+ * Create STREAM-START.
+ */
+
+YAML_DECLARE(int)
+yaml_stream_start_event_initialize(yaml_event_t *event,
+ yaml_encoding_t encoding)
+{
+ yaml_mark_t mark = { 0, 0, 0 };
+
+ assert(event); /* Non-NULL event object is expected. */
+
+ STREAM_START_EVENT_INIT(*event, encoding, mark, mark);
+
+ return 1;
+}
+
+/*
+ * Create STREAM-END.
+ */
+
+YAML_DECLARE(int)
+yaml_stream_end_event_initialize(yaml_event_t *event)
+{
+ yaml_mark_t mark = { 0, 0, 0 };
+
+ assert(event); /* Non-NULL event object is expected. */
+
+ STREAM_END_EVENT_INIT(*event, mark, mark);
+
+ return 1;
+}
+
+/*
+ * Create DOCUMENT-START.
+ */
+
+YAML_DECLARE(int)
+yaml_document_start_event_initialize(yaml_event_t *event,
+ yaml_version_directive_t *version_directive,
+ yaml_tag_directive_t *tag_directives_start,
+ yaml_tag_directive_t *tag_directives_end,
+ int implicit)
+{
+ struct {
+ yaml_error_type_t error;
+ } context;
+ yaml_mark_t mark = { 0, 0, 0 };
+ yaml_version_directive_t *version_directive_copy = NULL;
+ struct {
+ yaml_tag_directive_t *start;
+ yaml_tag_directive_t *end;
+ yaml_tag_directive_t *top;
+ } tag_directives_copy = { NULL, NULL, NULL };
+ yaml_tag_directive_t value = { NULL, NULL };
+
+ assert(event); /* Non-NULL event object is expected. */
+ assert((tag_directives_start && tag_directives_end) ||
+ (tag_directives_start == tag_directives_end));
+ /* Valid tag directives are expected. */
+
+ if (version_directive) {
+ version_directive_copy = yaml_malloc(sizeof(yaml_version_directive_t));
+ if (!version_directive_copy) goto error;
+ version_directive_copy->major = version_directive->major;
+ version_directive_copy->minor = version_directive->minor;
+ }
+
+ if (tag_directives_start != tag_directives_end) {
+ yaml_tag_directive_t *tag_directive;
+ if (!STACK_INIT(&context, tag_directives_copy, INITIAL_STACK_SIZE))
+ goto error;
+ for (tag_directive = tag_directives_start;
+ tag_directive != tag_directives_end; tag_directive ++) {
+ assert(tag_directive->handle);
+ assert(tag_directive->prefix);
+ if (!yaml_check_utf8(tag_directive->handle,
+ strlen((char *)tag_directive->handle)))
+ goto error;
+ if (!yaml_check_utf8(tag_directive->prefix,
+ strlen((char *)tag_directive->prefix)))
+ goto error;
+ value.handle = yaml_strdup(tag_directive->handle);
+ value.prefix = yaml_strdup(tag_directive->prefix);
+ if (!value.handle || !value.prefix) goto error;
+ if (!PUSH(&context, tag_directives_copy, value))
+ goto error;
+ value.handle = NULL;
+ value.prefix = NULL;
+ }
+ }
+
+ DOCUMENT_START_EVENT_INIT(*event, version_directive_copy,
+ tag_directives_copy.start, tag_directives_copy.top,
+ implicit, mark, mark);
+
+ return 1;
+
+error:
+ yaml_free(version_directive_copy);
+ while (!STACK_EMPTY(context, tag_directives_copy)) {
+ yaml_tag_directive_t value = POP(context, tag_directives_copy);
+ yaml_free(value.handle);
+ yaml_free(value.prefix);
+ }
+ STACK_DEL(context, tag_directives_copy);
+ yaml_free(value.handle);
+ yaml_free(value.prefix);
+
+ return 0;
+}
+
+/*
+ * Create DOCUMENT-END.
+ */
+
+YAML_DECLARE(int)
+yaml_document_end_event_initialize(yaml_event_t *event, int implicit)
+{
+ yaml_mark_t mark = { 0, 0, 0 };
+
+ assert(event); /* Non-NULL emitter object is expected. */
+
+ DOCUMENT_END_EVENT_INIT(*event, implicit, mark, mark);
+
+ return 1;
+}
+
+/*
+ * Create ALIAS.
+ */
+
+YAML_DECLARE(int)
+yaml_alias_event_initialize(yaml_event_t *event, yaml_char_t *anchor)
+{
+ yaml_mark_t mark = { 0, 0, 0 };
+ yaml_char_t *anchor_copy = NULL;
+
+ assert(event); /* Non-NULL event object is expected. */
+ assert(anchor); /* Non-NULL anchor is expected. */
+
+ if (!yaml_check_utf8(anchor, strlen((char *)anchor))) return 0;
+
+ anchor_copy = yaml_strdup(anchor);
+ if (!anchor_copy)
+ return 0;
+
+ ALIAS_EVENT_INIT(*event, anchor_copy, mark, mark);
+
+ return 1;
+}
+
+/*
+ * Create SCALAR.
+ */
+
+YAML_DECLARE(int)
+yaml_scalar_event_initialize(yaml_event_t *event,
+ yaml_char_t *anchor, yaml_char_t *tag,
+ yaml_char_t *value, int length,
+ int plain_implicit, int quoted_implicit,
+ yaml_scalar_style_t style)
+{
+ yaml_mark_t mark = { 0, 0, 0 };
+ yaml_char_t *anchor_copy = NULL;
+ yaml_char_t *tag_copy = NULL;
+ yaml_char_t *value_copy = NULL;
+ size_t value_length;
+
+ assert(event); /* Non-NULL event object is expected. */
+ assert(value); /* Non-NULL anchor is expected. */
+
+ if (anchor) {
+ if (!yaml_check_utf8(anchor, strlen((char *)anchor))) goto error;
+ anchor_copy = yaml_strdup(anchor);
+ if (!anchor_copy) goto error;
+ }
+
+ if (tag) {
+ if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
+ tag_copy = yaml_strdup(tag);
+ if (!tag_copy) goto error;
+ }
+
+ if (length < 0) {
+ value_length = strlen((char *)value);
+ }
+ else {
+ value_length = (size_t)length;
+ }
+
+ if (!yaml_check_utf8(value, value_length)) goto error;
+ value_copy = yaml_malloc(value_length+1);
+ if (!value_copy) goto error;
+ memcpy(value_copy, value, value_length);
+ value_copy[value_length] = '\0';
+
+ SCALAR_EVENT_INIT(*event, anchor_copy, tag_copy, value_copy, value_length,
+ plain_implicit, quoted_implicit, style, mark, mark);
+
+ return 1;
+
+error:
+ yaml_free(anchor_copy);
+ yaml_free(tag_copy);
+ yaml_free(value_copy);
+
+ return 0;
+}
+
+/*
+ * Create SEQUENCE-START.
+ */
+
+YAML_DECLARE(int)
+yaml_sequence_start_event_initialize(yaml_event_t *event,
+ yaml_char_t *anchor, yaml_char_t *tag, int implicit,
+ yaml_sequence_style_t style)
+{
+ yaml_mark_t mark = { 0, 0, 0 };
+ yaml_char_t *anchor_copy = NULL;
+ yaml_char_t *tag_copy = NULL;
+
+ assert(event); /* Non-NULL event object is expected. */
+
+ if (anchor) {
+ if (!yaml_check_utf8(anchor, strlen((char *)anchor))) goto error;
+ anchor_copy = yaml_strdup(anchor);
+ if (!anchor_copy) goto error;
+ }
+
+ if (tag) {
+ if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
+ tag_copy = yaml_strdup(tag);
+ if (!tag_copy) goto error;
+ }
+
+ SEQUENCE_START_EVENT_INIT(*event, anchor_copy, tag_copy,
+ implicit, style, mark, mark);
+
+ return 1;
+
+error:
+ yaml_free(anchor_copy);
+ yaml_free(tag_copy);
+
+ return 0;
+}
+
+/*
+ * Create SEQUENCE-END.
+ */
+
+YAML_DECLARE(int)
+yaml_sequence_end_event_initialize(yaml_event_t *event)
+{
+ yaml_mark_t mark = { 0, 0, 0 };
+
+ assert(event); /* Non-NULL event object is expected. */
+
+ SEQUENCE_END_EVENT_INIT(*event, mark, mark);
+
+ return 1;
+}
+
+/*
+ * Create MAPPING-START.
+ */
+
+YAML_DECLARE(int)
+yaml_mapping_start_event_initialize(yaml_event_t *event,
+ yaml_char_t *anchor, yaml_char_t *tag, int implicit,
+ yaml_mapping_style_t style)
+{
+ yaml_mark_t mark = { 0, 0, 0 };
+ yaml_char_t *anchor_copy = NULL;
+ yaml_char_t *tag_copy = NULL;
+
+ assert(event); /* Non-NULL event object is expected. */
+
+ if (anchor) {
+ if (!yaml_check_utf8(anchor, strlen((char *)anchor))) goto error;
+ anchor_copy = yaml_strdup(anchor);
+ if (!anchor_copy) goto error;
+ }
+
+ if (tag) {
+ if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
+ tag_copy = yaml_strdup(tag);
+ if (!tag_copy) goto error;
+ }
+
+ MAPPING_START_EVENT_INIT(*event, anchor_copy, tag_copy,
+ implicit, style, mark, mark);
+
+ return 1;
+
+error:
+ yaml_free(anchor_copy);
+ yaml_free(tag_copy);
+
+ return 0;
+}
+
+/*
+ * Create MAPPING-END.
+ */
+
+YAML_DECLARE(int)
+yaml_mapping_end_event_initialize(yaml_event_t *event)
+{
+ yaml_mark_t mark = { 0, 0, 0 };
+
+ assert(event); /* Non-NULL event object is expected. */
+
+ MAPPING_END_EVENT_INIT(*event, mark, mark);
+
+ return 1;
+}
+
+/*
+ * Destroy an event object.
+ */
+
+YAML_DECLARE(void)
+yaml_event_delete(yaml_event_t *event)
+{
+ yaml_tag_directive_t *tag_directive;
+
+ assert(event); /* Non-NULL event object expected. */
+
+ switch (event->type)
+ {
+ case YAML_DOCUMENT_START_EVENT:
+ yaml_free(event->data.document_start.version_directive);
+ for (tag_directive = event->data.document_start.tag_directives.start;
+ tag_directive != event->data.document_start.tag_directives.end;
+ tag_directive++) {
+ yaml_free(tag_directive->handle);
+ yaml_free(tag_directive->prefix);
+ }
+ yaml_free(event->data.document_start.tag_directives.start);
+ break;
+
+ case YAML_ALIAS_EVENT:
+ yaml_free(event->data.alias.anchor);
+ break;
+
+ case YAML_SCALAR_EVENT:
+ yaml_free(event->data.scalar.anchor);
+ yaml_free(event->data.scalar.tag);
+ yaml_free(event->data.scalar.value);
+ break;
+
+ case YAML_SEQUENCE_START_EVENT:
+ yaml_free(event->data.sequence_start.anchor);
+ yaml_free(event->data.sequence_start.tag);
+ break;
+
+ case YAML_MAPPING_START_EVENT:
+ yaml_free(event->data.mapping_start.anchor);
+ yaml_free(event->data.mapping_start.tag);
+ break;
+
+ default:
+ break;
+ }
+
+ memset(event, 0, sizeof(yaml_event_t));
+}
+
+/*
+ * Create a document object.
+ */
+
+YAML_DECLARE(int)
+yaml_document_initialize(yaml_document_t *document,
+ yaml_version_directive_t *version_directive,
+ yaml_tag_directive_t *tag_directives_start,
+ yaml_tag_directive_t *tag_directives_end,
+ int start_implicit, int end_implicit)
+{
+ struct {
+ yaml_error_type_t error;
+ } context;
+ struct {
+ yaml_node_t *start;
+ yaml_node_t *end;
+ yaml_node_t *top;
+ } nodes = { NULL, NULL, NULL };
+ yaml_version_directive_t *version_directive_copy = NULL;
+ struct {
+ yaml_tag_directive_t *start;
+ yaml_tag_directive_t *end;
+ yaml_tag_directive_t *top;
+ } tag_directives_copy = { NULL, NULL, NULL };
+ yaml_tag_directive_t value = { NULL, NULL };
+ yaml_mark_t mark = { 0, 0, 0 };
+
+ assert(document); /* Non-NULL document object is expected. */
+ assert((tag_directives_start && tag_directives_end) ||
+ (tag_directives_start == tag_directives_end));
+ /* Valid tag directives are expected. */
+
+ if (!STACK_INIT(&context, nodes, INITIAL_STACK_SIZE)) goto error;
+
+ if (version_directive) {
+ version_directive_copy = yaml_malloc(sizeof(yaml_version_directive_t));
+ if (!version_directive_copy) goto error;
+ version_directive_copy->major = version_directive->major;
+ version_directive_copy->minor = version_directive->minor;
+ }
+
+ if (tag_directives_start != tag_directives_end) {
+ yaml_tag_directive_t *tag_directive;
+ if (!STACK_INIT(&context, tag_directives_copy, INITIAL_STACK_SIZE))
+ goto error;
+ for (tag_directive = tag_directives_start;
+ tag_directive != tag_directives_end; tag_directive ++) {
+ assert(tag_directive->handle);
+ assert(tag_directive->prefix);
+ if (!yaml_check_utf8(tag_directive->handle,
+ strlen((char *)tag_directive->handle)))
+ goto error;
+ if (!yaml_check_utf8(tag_directive->prefix,
+ strlen((char *)tag_directive->prefix)))
+ goto error;
+ value.handle = yaml_strdup(tag_directive->handle);
+ value.prefix = yaml_strdup(tag_directive->prefix);
+ if (!value.handle || !value.prefix) goto error;
+ if (!PUSH(&context, tag_directives_copy, value))
+ goto error;
+ value.handle = NULL;
+ value.prefix = NULL;
+ }
+ }
+
+ DOCUMENT_INIT(*document, nodes.start, nodes.end, version_directive_copy,
+ tag_directives_copy.start, tag_directives_copy.top,
+ start_implicit, end_implicit, mark, mark);
+
+ return 1;
+
+error:
+ STACK_DEL(&context, nodes);
+ yaml_free(version_directive_copy);
+ while (!STACK_EMPTY(&context, tag_directives_copy)) {
+ yaml_tag_directive_t value = POP(&context, tag_directives_copy);
+ yaml_free(value.handle);
+ yaml_free(value.prefix);
+ }
+ STACK_DEL(&context, tag_directives_copy);
+ yaml_free(value.handle);
+ yaml_free(value.prefix);
+
+ return 0;
+}
+
+/*
+ * Destroy a document object.
+ */
+
+YAML_DECLARE(void)
+yaml_document_delete(yaml_document_t *document)
+{
+ struct {
+ yaml_error_type_t error;
+ } context;
+ yaml_tag_directive_t *tag_directive;
+
+ context.error = YAML_NO_ERROR; /* Eliminate a compliler warning. */
+
+ assert(document); /* Non-NULL document object is expected. */
+
+ while (!STACK_EMPTY(&context, document->nodes)) {
+ yaml_node_t node = POP(&context, document->nodes);
+ yaml_free(node.tag);
+ switch (node.type) {
+ case YAML_SCALAR_NODE:
+ yaml_free(node.data.scalar.value);
+ break;
+ case YAML_SEQUENCE_NODE:
+ STACK_DEL(&context, node.data.sequence.items);
+ break;
+ case YAML_MAPPING_NODE:
+ STACK_DEL(&context, node.data.mapping.pairs);
+ break;
+ default:
+ assert(0); /* Should not happen. */
+ }
+ }
+ STACK_DEL(&context, document->nodes);
+
+ yaml_free(document->version_directive);
+ for (tag_directive = document->tag_directives.start;
+ tag_directive != document->tag_directives.end;
+ tag_directive++) {
+ yaml_free(tag_directive->handle);
+ yaml_free(tag_directive->prefix);
+ }
+ yaml_free(document->tag_directives.start);
+
+ memset(document, 0, sizeof(yaml_document_t));
+}
+
+/**
+ * Get a document node.
+ */
+
+YAML_DECLARE(yaml_node_t *)
+yaml_document_get_node(yaml_document_t *document, int index)
+{
+ assert(document); /* Non-NULL document object is expected. */
+
+ if (index > 0 && document->nodes.start + index <= document->nodes.top) {
+ return document->nodes.start + index - 1;
+ }
+ return NULL;
+}
+
+/**
+ * Get the root object.
+ */
+
+YAML_DECLARE(yaml_node_t *)
+yaml_document_get_root_node(yaml_document_t *document)
+{
+ assert(document); /* Non-NULL document object is expected. */
+
+ if (document->nodes.top != document->nodes.start) {
+ return document->nodes.start;
+ }
+ return NULL;
+}
+
+/*
+ * Add a scalar node to a document.
+ */
+
+YAML_DECLARE(int)
+yaml_document_add_scalar(yaml_document_t *document,
+ yaml_char_t *tag, yaml_char_t *value, int length,
+ yaml_scalar_style_t style)
+{
+ struct {
+ yaml_error_type_t error;
+ } context;
+ yaml_mark_t mark = { 0, 0, 0 };
+ yaml_char_t *tag_copy = NULL;
+ yaml_char_t *value_copy = NULL;
+ yaml_node_t node;
+ size_t value_length;
+ ptrdiff_t ret;
+
+ assert(document); /* Non-NULL document object is expected. */
+ assert(value); /* Non-NULL value is expected. */
+
+ if (!tag) {
+ tag = (yaml_char_t *)YAML_DEFAULT_SCALAR_TAG;
+ }
+
+ if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
+ tag_copy = yaml_strdup(tag);
+ if (!tag_copy) goto error;
+
+ if (length < 0) {
+ value_length = strlen((char *)value);
+ }
+ else {
+ value_length = (size_t)length;
+ }
+
+ if (!yaml_check_utf8(value, value_length)) goto error;
+ value_copy = yaml_malloc(value_length+1);
+ if (!value_copy) goto error;
+ memcpy(value_copy, value, value_length);
+ value_copy[value_length] = '\0';
+
+ SCALAR_NODE_INIT(node, tag_copy, value_copy, value_length, style, mark, mark);
+ if (!PUSH(&context, document->nodes, node)) goto error;
+
+ ret = document->nodes.top - document->nodes.start;
+#if PTRDIFF_MAX > INT_MAX
+ if (ret > INT_MAX) goto error;
+#endif
+ return (int)ret;
+
+error:
+ yaml_free(tag_copy);
+ yaml_free(value_copy);
+
+ return 0;
+}
+
+/*
+ * Add a sequence node to a document.
+ */
+
+YAML_DECLARE(int)
+yaml_document_add_sequence(yaml_document_t *document,
+ yaml_char_t *tag, yaml_sequence_style_t style)
+{
+ struct {
+ yaml_error_type_t error;
+ } context;
+ yaml_mark_t mark = { 0, 0, 0 };
+ yaml_char_t *tag_copy = NULL;
+ struct {
+ yaml_node_item_t *start;
+ yaml_node_item_t *end;
+ yaml_node_item_t *top;
+ } items = { NULL, NULL, NULL };
+ yaml_node_t node;
+ ptrdiff_t ret;
+
+ assert(document); /* Non-NULL document object is expected. */
+
+ if (!tag) {
+ tag = (yaml_char_t *)YAML_DEFAULT_SEQUENCE_TAG;
+ }
+
+ if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
+ tag_copy = yaml_strdup(tag);
+ if (!tag_copy) goto error;
+
+ if (!STACK_INIT(&context, items, INITIAL_STACK_SIZE)) goto error;
+
+ SEQUENCE_NODE_INIT(node, tag_copy, items.start, items.end,
+ style, mark, mark);
+ if (!PUSH(&context, document->nodes, node)) goto error;
+
+ ret = document->nodes.top - document->nodes.start;
+#if PTRDIFF_MAX > INT_MAX
+ if (ret > INT_MAX) goto error;
+#endif
+ return (int)ret;
+
+error:
+ STACK_DEL(&context, items);
+ yaml_free(tag_copy);
+
+ return 0;
+}
+
+/*
+ * Add a mapping node to a document.
+ */
+
+YAML_DECLARE(int)
+yaml_document_add_mapping(yaml_document_t *document,
+ yaml_char_t *tag, yaml_mapping_style_t style)
+{
+ struct {
+ yaml_error_type_t error;
+ } context;
+ yaml_mark_t mark = { 0, 0, 0 };
+ yaml_char_t *tag_copy = NULL;
+ struct {
+ yaml_node_pair_t *start;
+ yaml_node_pair_t *end;
+ yaml_node_pair_t *top;
+ } pairs = { NULL, NULL, NULL };
+ yaml_node_t node;
+ ptrdiff_t ret;
+
+ assert(document); /* Non-NULL document object is expected. */
+
+ if (!tag) {
+ tag = (yaml_char_t *)YAML_DEFAULT_MAPPING_TAG;
+ }
+
+ if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
+ tag_copy = yaml_strdup(tag);
+ if (!tag_copy) goto error;
+
+ if (!STACK_INIT(&context, pairs, INITIAL_STACK_SIZE)) goto error;
+
+ MAPPING_NODE_INIT(node, tag_copy, pairs.start, pairs.end,
+ style, mark, mark);
+ if (!PUSH(&context, document->nodes, node)) goto error;
+
+ ret = document->nodes.top - document->nodes.start;
+#if PTRDIFF_MAX > INT_MAX
+ if (ret > INT_MAX) goto error;
+#endif
+ return (int)ret;
+
+error:
+ STACK_DEL(&context, pairs);
+ yaml_free(tag_copy);
+
+ return 0;
+}
+
+/*
+ * Append an item to a sequence node.
+ */
+
+YAML_DECLARE(int)
+yaml_document_append_sequence_item(yaml_document_t *document,
+ int sequence, int item)
+{
+ struct {
+ yaml_error_type_t error;
+ } context;
+
+ assert(document); /* Non-NULL document is required. */
+ assert(sequence > 0
+ && document->nodes.start + sequence <= document->nodes.top);
+ /* Valid sequence id is required. */
+ assert(document->nodes.start[sequence-1].type == YAML_SEQUENCE_NODE);
+ /* A sequence node is required. */
+ assert(item > 0 && document->nodes.start + item <= document->nodes.top);
+ /* Valid item id is required. */
+
+ if (!PUSH(&context,
+ document->nodes.start[sequence-1].data.sequence.items, item))
+ return 0;
+
+ return 1;
+}
+
+/*
+ * Append a pair of a key and a value to a mapping node.
+ */
+
+YAML_DECLARE(int)
+yaml_document_append_mapping_pair(yaml_document_t *document,
+ int mapping, int key, int value)
+{
+ struct {
+ yaml_error_type_t error;
+ } context;
+
+ yaml_node_pair_t pair;
+
+ assert(document); /* Non-NULL document is required. */
+ assert(mapping > 0
+ && document->nodes.start + mapping <= document->nodes.top);
+ /* Valid mapping id is required. */
+ assert(document->nodes.start[mapping-1].type == YAML_MAPPING_NODE);
+ /* A mapping node is required. */
+ assert(key > 0 && document->nodes.start + key <= document->nodes.top);
+ /* Valid key id is required. */
+ assert(value > 0 && document->nodes.start + value <= document->nodes.top);
+ /* Valid value id is required. */
+
+ pair.key = key;
+ pair.value = value;
+
+ if (!PUSH(&context,
+ document->nodes.start[mapping-1].data.mapping.pairs, pair))
+ return 0;
+
+ return 1;
+}
+
+
diff --git a/jni/ruby/ext/psych/yaml/config.h b/jni/ruby/ext/psych/yaml/config.h
new file mode 100644
index 0000000..f54c27d
--- /dev/null
+++ b/jni/ruby/ext/psych/yaml/config.h
@@ -0,0 +1,10 @@
+#define PACKAGE_NAME "yaml"
+#define PACKAGE_TARNAME "yaml"
+#define PACKAGE_VERSION "0.1.6"
+#define PACKAGE_STRING "yaml 0.1.6"
+#define PACKAGE_BUGREPORT "http://pyyaml.org/newticket?component libyaml"
+#define PACKAGE_URL ""
+#define YAML_VERSION_MAJOR 0
+#define YAML_VERSION_MINOR 1
+#define YAML_VERSION_PATCH 6
+#define YAML_VERSION_STRING "0.1.6"
diff --git a/jni/ruby/ext/psych/yaml/dumper.c b/jni/ruby/ext/psych/yaml/dumper.c
new file mode 100644
index 0000000..203c6a7
--- /dev/null
+++ b/jni/ruby/ext/psych/yaml/dumper.c
@@ -0,0 +1,394 @@
+
+#include "yaml_private.h"
+
+/*
+ * API functions.
+ */
+
+YAML_DECLARE(int)
+yaml_emitter_open(yaml_emitter_t *emitter);
+
+YAML_DECLARE(int)
+yaml_emitter_close(yaml_emitter_t *emitter);
+
+YAML_DECLARE(int)
+yaml_emitter_dump(yaml_emitter_t *emitter, yaml_document_t *document);
+
+/*
+ * Clean up functions.
+ */
+
+static void
+yaml_emitter_delete_document_and_anchors(yaml_emitter_t *emitter);
+
+/*
+ * Anchor functions.
+ */
+
+static void
+yaml_emitter_anchor_node(yaml_emitter_t *emitter, int index);
+
+static yaml_char_t *
+yaml_emitter_generate_anchor(yaml_emitter_t *emitter, int anchor_id);
+
+
+/*
+ * Serialize functions.
+ */
+
+static int
+yaml_emitter_dump_node(yaml_emitter_t *emitter, int index);
+
+static int
+yaml_emitter_dump_alias(yaml_emitter_t *emitter, yaml_char_t *anchor);
+
+static int
+yaml_emitter_dump_scalar(yaml_emitter_t *emitter, yaml_node_t *node,
+ yaml_char_t *anchor);
+
+static int
+yaml_emitter_dump_sequence(yaml_emitter_t *emitter, yaml_node_t *node,
+ yaml_char_t *anchor);
+
+static int
+yaml_emitter_dump_mapping(yaml_emitter_t *emitter, yaml_node_t *node,
+ yaml_char_t *anchor);
+
+/*
+ * Issue a STREAM-START event.
+ */
+
+YAML_DECLARE(int)
+yaml_emitter_open(yaml_emitter_t *emitter)
+{
+ yaml_event_t event;
+ yaml_mark_t mark = { 0, 0, 0 };
+
+ assert(emitter); /* Non-NULL emitter object is required. */
+ assert(!emitter->opened); /* Emitter should not be opened yet. */
+
+ STREAM_START_EVENT_INIT(event, YAML_ANY_ENCODING, mark, mark);
+
+ if (!yaml_emitter_emit(emitter, &event)) {
+ return 0;
+ }
+
+ emitter->opened = 1;
+
+ return 1;
+}
+
+/*
+ * Issue a STREAM-END event.
+ */
+
+YAML_DECLARE(int)
+yaml_emitter_close(yaml_emitter_t *emitter)
+{
+ yaml_event_t event;
+ yaml_mark_t mark = { 0, 0, 0 };
+
+ assert(emitter); /* Non-NULL emitter object is required. */
+ assert(emitter->opened); /* Emitter should be opened. */
+
+ if (emitter->closed) return 1;
+
+ STREAM_END_EVENT_INIT(event, mark, mark);
+
+ if (!yaml_emitter_emit(emitter, &event)) {
+ return 0;
+ }
+
+ emitter->closed = 1;
+
+ return 1;
+}
+
+/*
+ * Dump a YAML document.
+ */
+
+YAML_DECLARE(int)
+yaml_emitter_dump(yaml_emitter_t *emitter, yaml_document_t *document)
+{
+ yaml_event_t event;
+ yaml_mark_t mark = { 0, 0, 0 };
+
+ assert(emitter); /* Non-NULL emitter object is required. */
+ assert(document); /* Non-NULL emitter object is expected. */
+
+ emitter->document = document;
+
+ if (!emitter->opened) {
+ if (!yaml_emitter_open(emitter)) goto error;
+ }
+
+ if (STACK_EMPTY(emitter, document->nodes)) {
+ if (!yaml_emitter_close(emitter)) goto error;
+ yaml_emitter_delete_document_and_anchors(emitter);
+ return 1;
+ }
+
+ assert(emitter->opened); /* Emitter should be opened. */
+
+ emitter->anchors = yaml_malloc(sizeof(*(emitter->anchors))
+ * (document->nodes.top - document->nodes.start));
+ if (!emitter->anchors) goto error;
+ memset(emitter->anchors, 0, sizeof(*(emitter->anchors))
+ * (document->nodes.top - document->nodes.start));
+
+ DOCUMENT_START_EVENT_INIT(event, document->version_directive,
+ document->tag_directives.start, document->tag_directives.end,
+ document->start_implicit, mark, mark);
+ if (!yaml_emitter_emit(emitter, &event)) goto error;
+
+ yaml_emitter_anchor_node(emitter, 1);
+ if (!yaml_emitter_dump_node(emitter, 1)) goto error;
+
+ DOCUMENT_END_EVENT_INIT(event, document->end_implicit, mark, mark);
+ if (!yaml_emitter_emit(emitter, &event)) goto error;
+
+ yaml_emitter_delete_document_and_anchors(emitter);
+
+ return 1;
+
+error:
+
+ yaml_emitter_delete_document_and_anchors(emitter);
+
+ return 0;
+}
+
+/*
+ * Clean up the emitter object after a document is dumped.
+ */
+
+static void
+yaml_emitter_delete_document_and_anchors(yaml_emitter_t *emitter)
+{
+ int index;
+
+ if (!emitter->anchors) {
+ yaml_document_delete(emitter->document);
+ emitter->document = NULL;
+ return;
+ }
+
+ for (index = 0; emitter->document->nodes.start + index
+ < emitter->document->nodes.top; index ++) {
+ yaml_node_t node = emitter->document->nodes.start[index];
+ if (!emitter->anchors[index].serialized) {
+ yaml_free(node.tag);
+ if (node.type == YAML_SCALAR_NODE) {
+ yaml_free(node.data.scalar.value);
+ }
+ }
+ if (node.type == YAML_SEQUENCE_NODE) {
+ STACK_DEL(emitter, node.data.sequence.items);
+ }
+ if (node.type == YAML_MAPPING_NODE) {
+ STACK_DEL(emitter, node.data.mapping.pairs);
+ }
+ }
+
+ STACK_DEL(emitter, emitter->document->nodes);
+ yaml_free(emitter->anchors);
+
+ emitter->anchors = NULL;
+ emitter->last_anchor_id = 0;
+ emitter->document = NULL;
+}
+
+/*
+ * Check the references of a node and assign the anchor id if needed.
+ */
+
+static void
+yaml_emitter_anchor_node(yaml_emitter_t *emitter, int index)
+{
+ yaml_node_t *node = emitter->document->nodes.start + index - 1;
+ yaml_node_item_t *item;
+ yaml_node_pair_t *pair;
+
+ emitter->anchors[index-1].references ++;
+
+ if (emitter->anchors[index-1].references == 1) {
+ switch (node->type) {
+ case YAML_SEQUENCE_NODE:
+ for (item = node->data.sequence.items.start;
+ item < node->data.sequence.items.top; item ++) {
+ yaml_emitter_anchor_node(emitter, *item);
+ }
+ break;
+ case YAML_MAPPING_NODE:
+ for (pair = node->data.mapping.pairs.start;
+ pair < node->data.mapping.pairs.top; pair ++) {
+ yaml_emitter_anchor_node(emitter, pair->key);
+ yaml_emitter_anchor_node(emitter, pair->value);
+ }
+ break;
+ default:
+ break;
+ }
+ }
+
+ else if (emitter->anchors[index-1].references == 2) {
+ emitter->anchors[index-1].anchor = (++ emitter->last_anchor_id);
+ }
+}
+
+/*
+ * Generate a textual representation for an anchor.
+ */
+
+#define ANCHOR_TEMPLATE "id%03d"
+#define ANCHOR_TEMPLATE_LENGTH 16
+
+static yaml_char_t *
+yaml_emitter_generate_anchor(yaml_emitter_t *emitter, int anchor_id)
+{
+ yaml_char_t *anchor = yaml_malloc(ANCHOR_TEMPLATE_LENGTH);
+
+ if (!anchor) return NULL;
+
+ sprintf((char *)anchor, ANCHOR_TEMPLATE, anchor_id);
+
+ return anchor;
+}
+
+/*
+ * Serialize a node.
+ */
+
+static int
+yaml_emitter_dump_node(yaml_emitter_t *emitter, int index)
+{
+ yaml_node_t *node = emitter->document->nodes.start + index - 1;
+ int anchor_id = emitter->anchors[index-1].anchor;
+ yaml_char_t *anchor = NULL;
+
+ if (anchor_id) {
+ anchor = yaml_emitter_generate_anchor(emitter, anchor_id);
+ if (!anchor) return 0;
+ }
+
+ if (emitter->anchors[index-1].serialized) {
+ return yaml_emitter_dump_alias(emitter, anchor);
+ }
+
+ emitter->anchors[index-1].serialized = 1;
+
+ switch (node->type) {
+ case YAML_SCALAR_NODE:
+ return yaml_emitter_dump_scalar(emitter, node, anchor);
+ case YAML_SEQUENCE_NODE:
+ return yaml_emitter_dump_sequence(emitter, node, anchor);
+ case YAML_MAPPING_NODE:
+ return yaml_emitter_dump_mapping(emitter, node, anchor);
+ default:
+ assert(0); /* Could not happen. */
+ break;
+ }
+
+ return 0; /* Could not happen. */
+}
+
+/*
+ * Serialize an alias.
+ */
+
+static int
+yaml_emitter_dump_alias(yaml_emitter_t *emitter, yaml_char_t *anchor)
+{
+ yaml_event_t event;
+ yaml_mark_t mark = { 0, 0, 0 };
+
+ ALIAS_EVENT_INIT(event, anchor, mark, mark);
+
+ return yaml_emitter_emit(emitter, &event);
+}
+
+/*
+ * Serialize a scalar.
+ */
+
+static int
+yaml_emitter_dump_scalar(yaml_emitter_t *emitter, yaml_node_t *node,
+ yaml_char_t *anchor)
+{
+ yaml_event_t event;
+ yaml_mark_t mark = { 0, 0, 0 };
+
+ int plain_implicit = (strcmp((char *)node->tag,
+ YAML_DEFAULT_SCALAR_TAG) == 0);
+ int quoted_implicit = (strcmp((char *)node->tag,
+ YAML_DEFAULT_SCALAR_TAG) == 0);
+
+ SCALAR_EVENT_INIT(event, anchor, node->tag, node->data.scalar.value,
+ node->data.scalar.length, plain_implicit, quoted_implicit,
+ node->data.scalar.style, mark, mark);
+
+ return yaml_emitter_emit(emitter, &event);
+}
+
+/*
+ * Serialize a sequence.
+ */
+
+static int
+yaml_emitter_dump_sequence(yaml_emitter_t *emitter, yaml_node_t *node,
+ yaml_char_t *anchor)
+{
+ yaml_event_t event;
+ yaml_mark_t mark = { 0, 0, 0 };
+
+ int implicit = (strcmp((char *)node->tag, YAML_DEFAULT_SEQUENCE_TAG) == 0);
+
+ yaml_node_item_t *item;
+
+ SEQUENCE_START_EVENT_INIT(event, anchor, node->tag, implicit,
+ node->data.sequence.style, mark, mark);
+ if (!yaml_emitter_emit(emitter, &event)) return 0;
+
+ for (item = node->data.sequence.items.start;
+ item < node->data.sequence.items.top; item ++) {
+ if (!yaml_emitter_dump_node(emitter, *item)) return 0;
+ }
+
+ SEQUENCE_END_EVENT_INIT(event, mark, mark);
+ if (!yaml_emitter_emit(emitter, &event)) return 0;
+
+ return 1;
+}
+
+/*
+ * Serialize a mapping.
+ */
+
+static int
+yaml_emitter_dump_mapping(yaml_emitter_t *emitter, yaml_node_t *node,
+ yaml_char_t *anchor)
+{
+ yaml_event_t event;
+ yaml_mark_t mark = { 0, 0, 0 };
+
+ int implicit = (strcmp((char *)node->tag, YAML_DEFAULT_MAPPING_TAG) == 0);
+
+ yaml_node_pair_t *pair;
+
+ MAPPING_START_EVENT_INIT(event, anchor, node->tag, implicit,
+ node->data.mapping.style, mark, mark);
+ if (!yaml_emitter_emit(emitter, &event)) return 0;
+
+ for (pair = node->data.mapping.pairs.start;
+ pair < node->data.mapping.pairs.top; pair ++) {
+ if (!yaml_emitter_dump_node(emitter, pair->key)) return 0;
+ if (!yaml_emitter_dump_node(emitter, pair->value)) return 0;
+ }
+
+ MAPPING_END_EVENT_INIT(event, mark, mark);
+ if (!yaml_emitter_emit(emitter, &event)) return 0;
+
+ return 1;
+}
+
diff --git a/jni/ruby/ext/psych/yaml/emitter.c b/jni/ruby/ext/psych/yaml/emitter.c
new file mode 100644
index 0000000..bf84faf
--- /dev/null
+++ b/jni/ruby/ext/psych/yaml/emitter.c
@@ -0,0 +1,2329 @@
+
+#include "yaml_private.h"
+
+/*
+ * Flush the buffer if needed.
+ */
+
+#define FLUSH(emitter) \
+ ((emitter->buffer.pointer+5 < emitter->buffer.end) \
+ || yaml_emitter_flush(emitter))
+
+/*
+ * Put a character to the output buffer.
+ */
+
+#define PUT(emitter,value) \
+ (FLUSH(emitter) \
+ && (*(emitter->buffer.pointer++) = (yaml_char_t)(value), \
+ emitter->column ++, \
+ 1))
+
+/*
+ * Put a line break to the output buffer.
+ */
+
+#define PUT_BREAK(emitter) \
+ (FLUSH(emitter) \
+ && ((emitter->line_break == YAML_CR_BREAK ? \
+ (*(emitter->buffer.pointer++) = (yaml_char_t) '\r') : \
+ emitter->line_break == YAML_LN_BREAK ? \
+ (*(emitter->buffer.pointer++) = (yaml_char_t) '\n') : \
+ emitter->line_break == YAML_CRLN_BREAK ? \
+ (*(emitter->buffer.pointer++) = (yaml_char_t) '\r', \
+ *(emitter->buffer.pointer++) = (yaml_char_t) '\n') : 0), \
+ emitter->column = 0, \
+ emitter->line ++, \
+ 1))
+
+/*
+ * Copy a character from a string into buffer.
+ */
+
+#define WRITE(emitter,string) \
+ (FLUSH(emitter) \
+ && (COPY(emitter->buffer,string), \
+ emitter->column ++, \
+ 1))
+
+/*
+ * Copy a line break character from a string into buffer.
+ */
+
+#define WRITE_BREAK(emitter,string) \
+ (FLUSH(emitter) \
+ && (CHECK(string,'\n') ? \
+ ((void)PUT_BREAK(emitter), \
+ string.pointer ++, \
+ 1) : \
+ (COPY(emitter->buffer,string), \
+ emitter->column = 0, \
+ emitter->line ++, \
+ 1)))
+
+/*
+ * API functions.
+ */
+
+YAML_DECLARE(int)
+yaml_emitter_emit(yaml_emitter_t *emitter, yaml_event_t *event);
+
+/*
+ * Utility functions.
+ */
+
+static int
+yaml_emitter_set_emitter_error(yaml_emitter_t *emitter, const char *problem);
+
+static int
+yaml_emitter_need_more_events(yaml_emitter_t *emitter);
+
+static int
+yaml_emitter_append_tag_directive(yaml_emitter_t *emitter,
+ yaml_tag_directive_t value, int allow_duplicates);
+
+static int
+yaml_emitter_increase_indent(yaml_emitter_t *emitter,
+ int flow, int indentless);
+
+/*
+ * State functions.
+ */
+
+static int
+yaml_emitter_state_machine(yaml_emitter_t *emitter, yaml_event_t *event);
+
+static int
+yaml_emitter_emit_stream_start(yaml_emitter_t *emitter,
+ yaml_event_t *event);
+
+static int
+yaml_emitter_emit_document_start(yaml_emitter_t *emitter,
+ yaml_event_t *event, int first);
+
+static int
+yaml_emitter_emit_document_content(yaml_emitter_t *emitter,
+ yaml_event_t *event);
+
+static int
+yaml_emitter_emit_document_end(yaml_emitter_t *emitter,
+ yaml_event_t *event);
+
+static int
+yaml_emitter_emit_flow_sequence_item(yaml_emitter_t *emitter,
+ yaml_event_t *event, int first);
+
+static int
+yaml_emitter_emit_flow_mapping_key(yaml_emitter_t *emitter,
+ yaml_event_t *event, int first);
+
+static int
+yaml_emitter_emit_flow_mapping_value(yaml_emitter_t *emitter,
+ yaml_event_t *event, int simple);
+
+static int
+yaml_emitter_emit_block_sequence_item(yaml_emitter_t *emitter,
+ yaml_event_t *event, int first);
+
+static int
+yaml_emitter_emit_block_mapping_key(yaml_emitter_t *emitter,
+ yaml_event_t *event, int first);
+
+static int
+yaml_emitter_emit_block_mapping_value(yaml_emitter_t *emitter,
+ yaml_event_t *event, int simple);
+
+static int
+yaml_emitter_emit_node(yaml_emitter_t *emitter, yaml_event_t *event,
+ int root, int sequence, int mapping, int simple_key);
+
+static int
+yaml_emitter_emit_alias(yaml_emitter_t *emitter, yaml_event_t *event);
+
+static int
+yaml_emitter_emit_scalar(yaml_emitter_t *emitter, yaml_event_t *event);
+
+static int
+yaml_emitter_emit_sequence_start(yaml_emitter_t *emitter, yaml_event_t *event);
+
+static int
+yaml_emitter_emit_mapping_start(yaml_emitter_t *emitter, yaml_event_t *event);
+
+/*
+ * Checkers.
+ */
+
+static int
+yaml_emitter_check_empty_document(yaml_emitter_t *emitter);
+
+static int
+yaml_emitter_check_empty_sequence(yaml_emitter_t *emitter);
+
+static int
+yaml_emitter_check_empty_mapping(yaml_emitter_t *emitter);
+
+static int
+yaml_emitter_check_simple_key(yaml_emitter_t *emitter);
+
+static int
+yaml_emitter_select_scalar_style(yaml_emitter_t *emitter, yaml_event_t *event);
+
+/*
+ * Processors.
+ */
+
+static int
+yaml_emitter_process_anchor(yaml_emitter_t *emitter);
+
+static int
+yaml_emitter_process_tag(yaml_emitter_t *emitter);
+
+static int
+yaml_emitter_process_scalar(yaml_emitter_t *emitter);
+
+/*
+ * Analyzers.
+ */
+
+static int
+yaml_emitter_analyze_version_directive(yaml_emitter_t *emitter,
+ yaml_version_directive_t version_directive);
+
+static int
+yaml_emitter_analyze_tag_directive(yaml_emitter_t *emitter,
+ yaml_tag_directive_t tag_directive);
+
+static int
+yaml_emitter_analyze_anchor(yaml_emitter_t *emitter,
+ yaml_char_t *anchor, int alias);
+
+static int
+yaml_emitter_analyze_tag(yaml_emitter_t *emitter,
+ yaml_char_t *tag);
+
+static int
+yaml_emitter_analyze_scalar(yaml_emitter_t *emitter,
+ yaml_char_t *value, size_t length);
+
+static int
+yaml_emitter_analyze_event(yaml_emitter_t *emitter,
+ yaml_event_t *event);
+
+/*
+ * Writers.
+ */
+
+static int
+yaml_emitter_write_bom(yaml_emitter_t *emitter);
+
+static int
+yaml_emitter_write_indent(yaml_emitter_t *emitter);
+
+static int
+yaml_emitter_write_indicator(yaml_emitter_t *emitter,
+ const char *indicator, int need_whitespace,
+ int is_whitespace, int is_indention);
+
+static int
+yaml_emitter_write_anchor(yaml_emitter_t *emitter,
+ yaml_char_t *value, size_t length);
+
+static int
+yaml_emitter_write_tag_handle(yaml_emitter_t *emitter,
+ yaml_char_t *value, size_t length);
+
+static int
+yaml_emitter_write_tag_content(yaml_emitter_t *emitter,
+ yaml_char_t *value, size_t length, int need_whitespace);
+
+static int
+yaml_emitter_write_plain_scalar(yaml_emitter_t *emitter,
+ yaml_char_t *value, size_t length, int allow_breaks);
+
+static int
+yaml_emitter_write_single_quoted_scalar(yaml_emitter_t *emitter,
+ yaml_char_t *value, size_t length, int allow_breaks);
+
+static int
+yaml_emitter_write_double_quoted_scalar(yaml_emitter_t *emitter,
+ yaml_char_t *value, size_t length, int allow_breaks);
+
+static int
+yaml_emitter_write_block_scalar_hints(yaml_emitter_t *emitter,
+ yaml_string_t string);
+
+static int
+yaml_emitter_write_literal_scalar(yaml_emitter_t *emitter,
+ yaml_char_t *value, size_t length);
+
+static int
+yaml_emitter_write_folded_scalar(yaml_emitter_t *emitter,
+ yaml_char_t *value, size_t length);
+
+/*
+ * Set an emitter error and return 0.
+ */
+
+static int
+yaml_emitter_set_emitter_error(yaml_emitter_t *emitter, const char *problem)
+{
+ emitter->error = YAML_EMITTER_ERROR;
+ emitter->problem = problem;
+
+ return 0;
+}
+
+/*
+ * Emit an event.
+ */
+
+YAML_DECLARE(int)
+yaml_emitter_emit(yaml_emitter_t *emitter, yaml_event_t *event)
+{
+ if (!ENQUEUE(emitter, emitter->events, *event)) {
+ yaml_event_delete(event);
+ return 0;
+ }
+
+ while (!yaml_emitter_need_more_events(emitter)) {
+ if (!yaml_emitter_analyze_event(emitter, emitter->events.head))
+ return 0;
+ if (!yaml_emitter_state_machine(emitter, emitter->events.head))
+ return 0;
+ yaml_event_delete(&DEQUEUE(emitter, emitter->events));
+ }
+
+ return 1;
+}
+
+/*
+ * Check if we need to accumulate more events before emitting.
+ *
+ * We accumulate extra
+ * - 1 event for DOCUMENT-START
+ * - 2 events for SEQUENCE-START
+ * - 3 events for MAPPING-START
+ */
+
+static int
+yaml_emitter_need_more_events(yaml_emitter_t *emitter)
+{
+ int level = 0;
+ int accumulate = 0;
+ yaml_event_t *event;
+
+ if (QUEUE_EMPTY(emitter, emitter->events))
+ return 1;
+
+ switch (emitter->events.head->type) {
+ case YAML_DOCUMENT_START_EVENT:
+ accumulate = 1;
+ break;
+ case YAML_SEQUENCE_START_EVENT:
+ accumulate = 2;
+ break;
+ case YAML_MAPPING_START_EVENT:
+ accumulate = 3;
+ break;
+ default:
+ return 0;
+ }
+
+ if (emitter->events.tail - emitter->events.head > accumulate)
+ return 0;
+
+ for (event = emitter->events.head; event != emitter->events.tail; event ++) {
+ switch (event->type) {
+ case YAML_STREAM_START_EVENT:
+ case YAML_DOCUMENT_START_EVENT:
+ case YAML_SEQUENCE_START_EVENT:
+ case YAML_MAPPING_START_EVENT:
+ level += 1;
+ break;
+ case YAML_STREAM_END_EVENT:
+ case YAML_DOCUMENT_END_EVENT:
+ case YAML_SEQUENCE_END_EVENT:
+ case YAML_MAPPING_END_EVENT:
+ level -= 1;
+ break;
+ default:
+ break;
+ }
+ if (!level)
+ return 0;
+ }
+
+ return 1;
+}
+
+/*
+ * Append a directive to the directives stack.
+ */
+
+static int
+yaml_emitter_append_tag_directive(yaml_emitter_t *emitter,
+ yaml_tag_directive_t value, int allow_duplicates)
+{
+ yaml_tag_directive_t *tag_directive;
+ yaml_tag_directive_t copy = { NULL, NULL };
+
+ for (tag_directive = emitter->tag_directives.start;
+ tag_directive != emitter->tag_directives.top; tag_directive ++) {
+ if (strcmp((char *)value.handle, (char *)tag_directive->handle) == 0) {
+ if (allow_duplicates)
+ return 1;
+ return yaml_emitter_set_emitter_error(emitter,
+ "duplicate %TAG directive");
+ }
+ }
+
+ copy.handle = yaml_strdup(value.handle);
+ copy.prefix = yaml_strdup(value.prefix);
+ if (!copy.handle || !copy.prefix) {
+ emitter->error = YAML_MEMORY_ERROR;
+ goto error;
+ }
+
+ if (!PUSH(emitter, emitter->tag_directives, copy))
+ goto error;
+
+ return 1;
+
+error:
+ yaml_free(copy.handle);
+ yaml_free(copy.prefix);
+ return 0;
+}
+
+/*
+ * Increase the indentation level.
+ */
+
+static int
+yaml_emitter_increase_indent(yaml_emitter_t *emitter,
+ int flow, int indentless)
+{
+ if (!PUSH(emitter, emitter->indents, emitter->indent))
+ return 0;
+
+ if (emitter->indent < 0) {
+ emitter->indent = flow ? emitter->best_indent : 0;
+ }
+ else if (!indentless) {
+ emitter->indent += emitter->best_indent;
+ }
+
+ return 1;
+}
+
+/*
+ * State dispatcher.
+ */
+
+static int
+yaml_emitter_state_machine(yaml_emitter_t *emitter, yaml_event_t *event)
+{
+ switch (emitter->state)
+ {
+ case YAML_EMIT_STREAM_START_STATE:
+ return yaml_emitter_emit_stream_start(emitter, event);
+
+ case YAML_EMIT_FIRST_DOCUMENT_START_STATE:
+ return yaml_emitter_emit_document_start(emitter, event, 1);
+
+ case YAML_EMIT_DOCUMENT_START_STATE:
+ return yaml_emitter_emit_document_start(emitter, event, 0);
+
+ case YAML_EMIT_DOCUMENT_CONTENT_STATE:
+ return yaml_emitter_emit_document_content(emitter, event);
+
+ case YAML_EMIT_DOCUMENT_END_STATE:
+ return yaml_emitter_emit_document_end(emitter, event);
+
+ case YAML_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE:
+ return yaml_emitter_emit_flow_sequence_item(emitter, event, 1);
+
+ case YAML_EMIT_FLOW_SEQUENCE_ITEM_STATE:
+ return yaml_emitter_emit_flow_sequence_item(emitter, event, 0);
+
+ case YAML_EMIT_FLOW_MAPPING_FIRST_KEY_STATE:
+ return yaml_emitter_emit_flow_mapping_key(emitter, event, 1);
+
+ case YAML_EMIT_FLOW_MAPPING_KEY_STATE:
+ return yaml_emitter_emit_flow_mapping_key(emitter, event, 0);
+
+ case YAML_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE:
+ return yaml_emitter_emit_flow_mapping_value(emitter, event, 1);
+
+ case YAML_EMIT_FLOW_MAPPING_VALUE_STATE:
+ return yaml_emitter_emit_flow_mapping_value(emitter, event, 0);
+
+ case YAML_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE:
+ return yaml_emitter_emit_block_sequence_item(emitter, event, 1);
+
+ case YAML_EMIT_BLOCK_SEQUENCE_ITEM_STATE:
+ return yaml_emitter_emit_block_sequence_item(emitter, event, 0);
+
+ case YAML_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE:
+ return yaml_emitter_emit_block_mapping_key(emitter, event, 1);
+
+ case YAML_EMIT_BLOCK_MAPPING_KEY_STATE:
+ return yaml_emitter_emit_block_mapping_key(emitter, event, 0);
+
+ case YAML_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE:
+ return yaml_emitter_emit_block_mapping_value(emitter, event, 1);
+
+ case YAML_EMIT_BLOCK_MAPPING_VALUE_STATE:
+ return yaml_emitter_emit_block_mapping_value(emitter, event, 0);
+
+ case YAML_EMIT_END_STATE:
+ return yaml_emitter_set_emitter_error(emitter,
+ "expected nothing after STREAM-END");
+
+ default:
+ assert(1); /* Invalid state. */
+ }
+
+ return 0;
+}
+
+/*
+ * Expect STREAM-START.
+ */
+
+static int
+yaml_emitter_emit_stream_start(yaml_emitter_t *emitter,
+ yaml_event_t *event)
+{
+ if (event->type == YAML_STREAM_START_EVENT)
+ {
+ if (!emitter->encoding) {
+ emitter->encoding = event->data.stream_start.encoding;
+ }
+
+ if (!emitter->encoding) {
+ emitter->encoding = YAML_UTF8_ENCODING;
+ }
+
+ if (emitter->best_indent < 2 || emitter->best_indent > 9) {
+ emitter->best_indent = 2;
+ }
+
+ if (emitter->best_width >= 0
+ && emitter->best_width <= emitter->best_indent*2) {
+ emitter->best_width = 80;
+ }
+
+ if (emitter->best_width < 0) {
+ emitter->best_width = INT_MAX;
+ }
+
+ if (!emitter->line_break) {
+ emitter->line_break = YAML_LN_BREAK;
+ }
+
+ emitter->indent = -1;
+
+ emitter->line = 0;
+ emitter->column = 0;
+ emitter->whitespace = 1;
+ emitter->indention = 1;
+
+ if (emitter->encoding != YAML_UTF8_ENCODING) {
+ if (!yaml_emitter_write_bom(emitter))
+ return 0;
+ }
+
+ emitter->state = YAML_EMIT_FIRST_DOCUMENT_START_STATE;
+
+ return 1;
+ }
+
+ return yaml_emitter_set_emitter_error(emitter,
+ "expected STREAM-START");
+}
+
+/*
+ * Expect DOCUMENT-START or STREAM-END.
+ */
+
+static int
+yaml_emitter_emit_document_start(yaml_emitter_t *emitter,
+ yaml_event_t *event, int first)
+{
+ if (event->type == YAML_DOCUMENT_START_EVENT)
+ {
+ yaml_tag_directive_t default_tag_directives[] = {
+ {(yaml_char_t *)"!", (yaml_char_t *)"!"},
+ {(yaml_char_t *)"!!", (yaml_char_t *)"tag:yaml.org,2002:"},
+ {NULL, NULL}
+ };
+ yaml_tag_directive_t *tag_directive;
+ int implicit;
+
+ if (event->data.document_start.version_directive) {
+ if (!yaml_emitter_analyze_version_directive(emitter,
+ *event->data.document_start.version_directive))
+ return 0;
+ }
+
+ for (tag_directive = event->data.document_start.tag_directives.start;
+ tag_directive != event->data.document_start.tag_directives.end;
+ tag_directive ++) {
+ if (!yaml_emitter_analyze_tag_directive(emitter, *tag_directive))
+ return 0;
+ if (!yaml_emitter_append_tag_directive(emitter, *tag_directive, 0))
+ return 0;
+ }
+
+ for (tag_directive = default_tag_directives;
+ tag_directive->handle; tag_directive ++) {
+ if (!yaml_emitter_append_tag_directive(emitter, *tag_directive, 1))
+ return 0;
+ }
+
+ implicit = event->data.document_start.implicit;
+ if (!first || emitter->canonical) {
+ implicit = 0;
+ }
+
+ if ((event->data.document_start.version_directive ||
+ (event->data.document_start.tag_directives.start
+ != event->data.document_start.tag_directives.end)) &&
+ emitter->open_ended)
+ {
+ if (!yaml_emitter_write_indicator(emitter, "...", 1, 0, 0))
+ return 0;
+ if (!yaml_emitter_write_indent(emitter))
+ return 0;
+ }
+
+ if (event->data.document_start.version_directive) {
+ implicit = 0;
+ if (!yaml_emitter_write_indicator(emitter, "%YAML", 1, 0, 0))
+ return 0;
+ if (!yaml_emitter_write_indicator(emitter, "1.1", 1, 0, 0))
+ return 0;
+ if (!yaml_emitter_write_indent(emitter))
+ return 0;
+ }
+
+ if (event->data.document_start.tag_directives.start
+ != event->data.document_start.tag_directives.end) {
+ implicit = 0;
+ for (tag_directive = event->data.document_start.tag_directives.start;
+ tag_directive != event->data.document_start.tag_directives.end;
+ tag_directive ++) {
+ if (!yaml_emitter_write_indicator(emitter, "%TAG", 1, 0, 0))
+ return 0;
+ if (!yaml_emitter_write_tag_handle(emitter, tag_directive->handle,
+ strlen((char *)tag_directive->handle)))
+ return 0;
+ if (!yaml_emitter_write_tag_content(emitter, tag_directive->prefix,
+ strlen((char *)tag_directive->prefix), 1))
+ return 0;
+ if (!yaml_emitter_write_indent(emitter))
+ return 0;
+ }
+ }
+
+ if (yaml_emitter_check_empty_document(emitter)) {
+ implicit = 0;
+ }
+
+ if (!implicit) {
+ if (!yaml_emitter_write_indent(emitter))
+ return 0;
+ if (!yaml_emitter_write_indicator(emitter, "---", 1, 0, 0))
+ return 0;
+ if (emitter->canonical) {
+ if (!yaml_emitter_write_indent(emitter))
+ return 0;
+ }
+ }
+
+ emitter->state = YAML_EMIT_DOCUMENT_CONTENT_STATE;
+
+ return 1;
+ }
+
+ else if (event->type == YAML_STREAM_END_EVENT)
+ {
+ if (emitter->open_ended)
+ {
+ if (!yaml_emitter_write_indicator(emitter, "...", 1, 0, 0))
+ return 0;
+ if (!yaml_emitter_write_indent(emitter))
+ return 0;
+ }
+
+ if (!yaml_emitter_flush(emitter))
+ return 0;
+
+ emitter->state = YAML_EMIT_END_STATE;
+
+ return 1;
+ }
+
+ return yaml_emitter_set_emitter_error(emitter,
+ "expected DOCUMENT-START or STREAM-END");
+}
+
+/*
+ * Expect the root node.
+ */
+
+static int
+yaml_emitter_emit_document_content(yaml_emitter_t *emitter,
+ yaml_event_t *event)
+{
+ if (!PUSH(emitter, emitter->states, YAML_EMIT_DOCUMENT_END_STATE))
+ return 0;
+
+ return yaml_emitter_emit_node(emitter, event, 1, 0, 0, 0);
+}
+
+/*
+ * Expect DOCUMENT-END.
+ */
+
+static int
+yaml_emitter_emit_document_end(yaml_emitter_t *emitter,
+ yaml_event_t *event)
+{
+ if (event->type == YAML_DOCUMENT_END_EVENT)
+ {
+ if (!yaml_emitter_write_indent(emitter))
+ return 0;
+ if (!event->data.document_end.implicit) {
+ if (!yaml_emitter_write_indicator(emitter, "...", 1, 0, 0))
+ return 0;
+ if (!yaml_emitter_write_indent(emitter))
+ return 0;
+ }
+ if (!yaml_emitter_flush(emitter))
+ return 0;
+
+ emitter->state = YAML_EMIT_DOCUMENT_START_STATE;
+
+ while (!STACK_EMPTY(emitter, emitter->tag_directives)) {
+ yaml_tag_directive_t tag_directive = POP(emitter,
+ emitter->tag_directives);
+ yaml_free(tag_directive.handle);
+ yaml_free(tag_directive.prefix);
+ }
+
+ return 1;
+ }
+
+ return yaml_emitter_set_emitter_error(emitter,
+ "expected DOCUMENT-END");
+}
+
+/*
+ *
+ * Expect a flow item node.
+ */
+
+static int
+yaml_emitter_emit_flow_sequence_item(yaml_emitter_t *emitter,
+ yaml_event_t *event, int first)
+{
+ if (first)
+ {
+ if (!yaml_emitter_write_indicator(emitter, "[", 1, 1, 0))
+ return 0;
+ if (!yaml_emitter_increase_indent(emitter, 1, 0))
+ return 0;
+ emitter->flow_level ++;
+ }
+
+ if (event->type == YAML_SEQUENCE_END_EVENT)
+ {
+ emitter->flow_level --;
+ emitter->indent = POP(emitter, emitter->indents);
+ if (emitter->canonical && !first) {
+ if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0))
+ return 0;
+ if (!yaml_emitter_write_indent(emitter))
+ return 0;
+ }
+ if (!yaml_emitter_write_indicator(emitter, "]", 0, 0, 0))
+ return 0;
+ emitter->state = POP(emitter, emitter->states);
+
+ return 1;
+ }
+
+ if (!first) {
+ if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0))
+ return 0;
+ }
+
+ if (emitter->canonical || emitter->column > emitter->best_width) {
+ if (!yaml_emitter_write_indent(emitter))
+ return 0;
+ }
+ if (!PUSH(emitter, emitter->states, YAML_EMIT_FLOW_SEQUENCE_ITEM_STATE))
+ return 0;
+
+ return yaml_emitter_emit_node(emitter, event, 0, 1, 0, 0);
+}
+
+/*
+ * Expect a flow key node.
+ */
+
+static int
+yaml_emitter_emit_flow_mapping_key(yaml_emitter_t *emitter,
+ yaml_event_t *event, int first)
+{
+ if (first)
+ {
+ if (!yaml_emitter_write_indicator(emitter, "{", 1, 1, 0))
+ return 0;
+ if (!yaml_emitter_increase_indent(emitter, 1, 0))
+ return 0;
+ emitter->flow_level ++;
+ }
+
+ if (event->type == YAML_MAPPING_END_EVENT)
+ {
+ emitter->flow_level --;
+ emitter->indent = POP(emitter, emitter->indents);
+ if (emitter->canonical && !first) {
+ if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0))
+ return 0;
+ if (!yaml_emitter_write_indent(emitter))
+ return 0;
+ }
+ if (!yaml_emitter_write_indicator(emitter, "}", 0, 0, 0))
+ return 0;
+ emitter->state = POP(emitter, emitter->states);
+
+ return 1;
+ }
+
+ if (!first) {
+ if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0))
+ return 0;
+ }
+ if (emitter->canonical || emitter->column > emitter->best_width) {
+ if (!yaml_emitter_write_indent(emitter))
+ return 0;
+ }
+
+ if (!emitter->canonical && yaml_emitter_check_simple_key(emitter))
+ {
+ if (!PUSH(emitter, emitter->states,
+ YAML_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE))
+ return 0;
+
+ return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 1);
+ }
+ else
+ {
+ if (!yaml_emitter_write_indicator(emitter, "?", 1, 0, 0))
+ return 0;
+ if (!PUSH(emitter, emitter->states,
+ YAML_EMIT_FLOW_MAPPING_VALUE_STATE))
+ return 0;
+
+ return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0);
+ }
+}
+
+/*
+ * Expect a flow value node.
+ */
+
+static int
+yaml_emitter_emit_flow_mapping_value(yaml_emitter_t *emitter,
+ yaml_event_t *event, int simple)
+{
+ if (simple) {
+ if (!yaml_emitter_write_indicator(emitter, ":", 0, 0, 0))
+ return 0;
+ }
+ else {
+ if (emitter->canonical || emitter->column > emitter->best_width) {
+ if (!yaml_emitter_write_indent(emitter))
+ return 0;
+ }
+ if (!yaml_emitter_write_indicator(emitter, ":", 1, 0, 0))
+ return 0;
+ }
+ if (!PUSH(emitter, emitter->states, YAML_EMIT_FLOW_MAPPING_KEY_STATE))
+ return 0;
+ return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0);
+}
+
+/*
+ * Expect a block item node.
+ */
+
+static int
+yaml_emitter_emit_block_sequence_item(yaml_emitter_t *emitter,
+ yaml_event_t *event, int first)
+{
+ if (first)
+ {
+ if (!yaml_emitter_increase_indent(emitter, 0,
+ (emitter->mapping_context && !emitter->indention)))
+ return 0;
+ }
+
+ if (event->type == YAML_SEQUENCE_END_EVENT)
+ {
+ emitter->indent = POP(emitter, emitter->indents);
+ emitter->state = POP(emitter, emitter->states);
+
+ return 1;
+ }
+
+ if (!yaml_emitter_write_indent(emitter))
+ return 0;
+ if (!yaml_emitter_write_indicator(emitter, "-", 1, 0, 1))
+ return 0;
+ if (!PUSH(emitter, emitter->states,
+ YAML_EMIT_BLOCK_SEQUENCE_ITEM_STATE))
+ return 0;
+
+ return yaml_emitter_emit_node(emitter, event, 0, 1, 0, 0);
+}
+
+/*
+ * Expect a block key node.
+ */
+
+static int
+yaml_emitter_emit_block_mapping_key(yaml_emitter_t *emitter,
+ yaml_event_t *event, int first)
+{
+ if (first)
+ {
+ if (!yaml_emitter_increase_indent(emitter, 0, 0))
+ return 0;
+ }
+
+ if (event->type == YAML_MAPPING_END_EVENT)
+ {
+ emitter->indent = POP(emitter, emitter->indents);
+ emitter->state = POP(emitter, emitter->states);
+
+ return 1;
+ }
+
+ if (!yaml_emitter_write_indent(emitter))
+ return 0;
+
+ if (yaml_emitter_check_simple_key(emitter))
+ {
+ if (!PUSH(emitter, emitter->states,
+ YAML_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE))
+ return 0;
+
+ return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 1);
+ }
+ else
+ {
+ if (!yaml_emitter_write_indicator(emitter, "?", 1, 0, 1))
+ return 0;
+ if (!PUSH(emitter, emitter->states,
+ YAML_EMIT_BLOCK_MAPPING_VALUE_STATE))
+ return 0;
+
+ return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0);
+ }
+}
+
+/*
+ * Expect a block value node.
+ */
+
+static int
+yaml_emitter_emit_block_mapping_value(yaml_emitter_t *emitter,
+ yaml_event_t *event, int simple)
+{
+ if (simple) {
+ if (!yaml_emitter_write_indicator(emitter, ":", 0, 0, 0))
+ return 0;
+ }
+ else {
+ if (!yaml_emitter_write_indent(emitter))
+ return 0;
+ if (!yaml_emitter_write_indicator(emitter, ":", 1, 0, 1))
+ return 0;
+ }
+ if (!PUSH(emitter, emitter->states,
+ YAML_EMIT_BLOCK_MAPPING_KEY_STATE))
+ return 0;
+
+ return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0);
+}
+
+/*
+ * Expect a node.
+ */
+
+static int
+yaml_emitter_emit_node(yaml_emitter_t *emitter, yaml_event_t *event,
+ int root, int sequence, int mapping, int simple_key)
+{
+ emitter->root_context = root;
+ emitter->sequence_context = sequence;
+ emitter->mapping_context = mapping;
+ emitter->simple_key_context = simple_key;
+
+ switch (event->type)
+ {
+ case YAML_ALIAS_EVENT:
+ return yaml_emitter_emit_alias(emitter, event);
+
+ case YAML_SCALAR_EVENT:
+ return yaml_emitter_emit_scalar(emitter, event);
+
+ case YAML_SEQUENCE_START_EVENT:
+ return yaml_emitter_emit_sequence_start(emitter, event);
+
+ case YAML_MAPPING_START_EVENT:
+ return yaml_emitter_emit_mapping_start(emitter, event);
+
+ default:
+ return yaml_emitter_set_emitter_error(emitter,
+ "expected SCALAR, SEQUENCE-START, MAPPING-START, or ALIAS");
+ }
+
+ return 0;
+}
+
+/*
+ * Expect ALIAS.
+ */
+
+static int
+yaml_emitter_emit_alias(yaml_emitter_t *emitter, yaml_event_t *event)
+{
+ if (!yaml_emitter_process_anchor(emitter))
+ return 0;
+ emitter->state = POP(emitter, emitter->states);
+
+ return 1;
+}
+
+/*
+ * Expect SCALAR.
+ */
+
+static int
+yaml_emitter_emit_scalar(yaml_emitter_t *emitter, yaml_event_t *event)
+{
+ if (!yaml_emitter_select_scalar_style(emitter, event))
+ return 0;
+ if (!yaml_emitter_process_anchor(emitter))
+ return 0;
+ if (!yaml_emitter_process_tag(emitter))
+ return 0;
+ if (!yaml_emitter_increase_indent(emitter, 1, 0))
+ return 0;
+ if (!yaml_emitter_process_scalar(emitter))
+ return 0;
+ emitter->indent = POP(emitter, emitter->indents);
+ emitter->state = POP(emitter, emitter->states);
+
+ return 1;
+}
+
+/*
+ * Expect SEQUENCE-START.
+ */
+
+static int
+yaml_emitter_emit_sequence_start(yaml_emitter_t *emitter, yaml_event_t *event)
+{
+ if (!yaml_emitter_process_anchor(emitter))
+ return 0;
+ if (!yaml_emitter_process_tag(emitter))
+ return 0;
+
+ if (emitter->flow_level || emitter->canonical
+ || event->data.sequence_start.style == YAML_FLOW_SEQUENCE_STYLE
+ || yaml_emitter_check_empty_sequence(emitter)) {
+ emitter->state = YAML_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE;
+ }
+ else {
+ emitter->state = YAML_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE;
+ }
+
+ return 1;
+}
+
+/*
+ * Expect MAPPING-START.
+ */
+
+static int
+yaml_emitter_emit_mapping_start(yaml_emitter_t *emitter, yaml_event_t *event)
+{
+ if (!yaml_emitter_process_anchor(emitter))
+ return 0;
+ if (!yaml_emitter_process_tag(emitter))
+ return 0;
+
+ if (emitter->flow_level || emitter->canonical
+ || event->data.mapping_start.style == YAML_FLOW_MAPPING_STYLE
+ || yaml_emitter_check_empty_mapping(emitter)) {
+ emitter->state = YAML_EMIT_FLOW_MAPPING_FIRST_KEY_STATE;
+ }
+ else {
+ emitter->state = YAML_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE;
+ }
+
+ return 1;
+}
+
+/*
+ * Check if the document content is an empty scalar.
+ */
+
+static int
+yaml_emitter_check_empty_document(yaml_emitter_t *emitter)
+{
+ return 0;
+}
+
+/*
+ * Check if the next events represent an empty sequence.
+ */
+
+static int
+yaml_emitter_check_empty_sequence(yaml_emitter_t *emitter)
+{
+ if (emitter->events.tail - emitter->events.head < 2)
+ return 0;
+
+ return (emitter->events.head[0].type == YAML_SEQUENCE_START_EVENT
+ && emitter->events.head[1].type == YAML_SEQUENCE_END_EVENT);
+}
+
+/*
+ * Check if the next events represent an empty mapping.
+ */
+
+static int
+yaml_emitter_check_empty_mapping(yaml_emitter_t *emitter)
+{
+ if (emitter->events.tail - emitter->events.head < 2)
+ return 0;
+
+ return (emitter->events.head[0].type == YAML_MAPPING_START_EVENT
+ && emitter->events.head[1].type == YAML_MAPPING_END_EVENT);
+}
+
+/*
+ * Check if the next node can be expressed as a simple key.
+ */
+
+static int
+yaml_emitter_check_simple_key(yaml_emitter_t *emitter)
+{
+ yaml_event_t *event = emitter->events.head;
+ size_t length = 0;
+
+ switch (event->type)
+ {
+ case YAML_ALIAS_EVENT:
+ length += emitter->anchor_data.anchor_length;
+ break;
+
+ case YAML_SCALAR_EVENT:
+ if (emitter->scalar_data.multiline)
+ return 0;
+ length += emitter->anchor_data.anchor_length
+ + emitter->tag_data.handle_length
+ + emitter->tag_data.suffix_length
+ + emitter->scalar_data.length;
+ break;
+
+ case YAML_SEQUENCE_START_EVENT:
+ if (!yaml_emitter_check_empty_sequence(emitter))
+ return 0;
+ length += emitter->anchor_data.anchor_length
+ + emitter->tag_data.handle_length
+ + emitter->tag_data.suffix_length;
+ break;
+
+ case YAML_MAPPING_START_EVENT:
+ if (!yaml_emitter_check_empty_mapping(emitter))
+ return 0;
+ length += emitter->anchor_data.anchor_length
+ + emitter->tag_data.handle_length
+ + emitter->tag_data.suffix_length;
+ break;
+
+ default:
+ return 0;
+ }
+
+ if (length > 128)
+ return 0;
+
+ return 1;
+}
+
+/*
+ * Determine an acceptable scalar style.
+ */
+
+static int
+yaml_emitter_select_scalar_style(yaml_emitter_t *emitter, yaml_event_t *event)
+{
+ yaml_scalar_style_t style = event->data.scalar.style;
+ int no_tag = (!emitter->tag_data.handle && !emitter->tag_data.suffix);
+
+ if (no_tag && !event->data.scalar.plain_implicit
+ && !event->data.scalar.quoted_implicit) {
+ return yaml_emitter_set_emitter_error(emitter,
+ "neither tag nor implicit flags are specified");
+ }
+
+ if (style == YAML_ANY_SCALAR_STYLE)
+ style = YAML_PLAIN_SCALAR_STYLE;
+
+ if (emitter->canonical)
+ style = YAML_DOUBLE_QUOTED_SCALAR_STYLE;
+
+ if (emitter->simple_key_context && emitter->scalar_data.multiline)
+ style = YAML_DOUBLE_QUOTED_SCALAR_STYLE;
+
+ if (style == YAML_PLAIN_SCALAR_STYLE)
+ {
+ if ((emitter->flow_level && !emitter->scalar_data.flow_plain_allowed)
+ || (!emitter->flow_level && !emitter->scalar_data.block_plain_allowed))
+ style = YAML_SINGLE_QUOTED_SCALAR_STYLE;
+ if (!emitter->scalar_data.length
+ && (emitter->flow_level || emitter->simple_key_context))
+ style = YAML_SINGLE_QUOTED_SCALAR_STYLE;
+ if (no_tag && !event->data.scalar.plain_implicit)
+ style = YAML_SINGLE_QUOTED_SCALAR_STYLE;
+ }
+
+ if (style == YAML_SINGLE_QUOTED_SCALAR_STYLE)
+ {
+ if (!emitter->scalar_data.single_quoted_allowed)
+ style = YAML_DOUBLE_QUOTED_SCALAR_STYLE;
+ }
+
+ if (style == YAML_LITERAL_SCALAR_STYLE || style == YAML_FOLDED_SCALAR_STYLE)
+ {
+ if (!emitter->scalar_data.block_allowed
+ || emitter->flow_level || emitter->simple_key_context)
+ style = YAML_DOUBLE_QUOTED_SCALAR_STYLE;
+ }
+
+ if (no_tag && !event->data.scalar.quoted_implicit
+ && style != YAML_PLAIN_SCALAR_STYLE)
+ {
+ emitter->tag_data.handle = (yaml_char_t *)"!";
+ emitter->tag_data.handle_length = 1;
+ }
+
+ emitter->scalar_data.style = style;
+
+ return 1;
+}
+
+/*
+ * Write an achor.
+ */
+
+static int
+yaml_emitter_process_anchor(yaml_emitter_t *emitter)
+{
+ if (!emitter->anchor_data.anchor)
+ return 1;
+
+ if (!yaml_emitter_write_indicator(emitter,
+ (emitter->anchor_data.alias ? "*" : "&"), 1, 0, 0))
+ return 0;
+
+ return yaml_emitter_write_anchor(emitter,
+ emitter->anchor_data.anchor, emitter->anchor_data.anchor_length);
+}
+
+/*
+ * Write a tag.
+ */
+
+static int
+yaml_emitter_process_tag(yaml_emitter_t *emitter)
+{
+ if (!emitter->tag_data.handle && !emitter->tag_data.suffix)
+ return 1;
+
+ if (emitter->tag_data.handle)
+ {
+ if (!yaml_emitter_write_tag_handle(emitter, emitter->tag_data.handle,
+ emitter->tag_data.handle_length))
+ return 0;
+ if (emitter->tag_data.suffix) {
+ if (!yaml_emitter_write_tag_content(emitter, emitter->tag_data.suffix,
+ emitter->tag_data.suffix_length, 0))
+ return 0;
+ }
+ }
+ else
+ {
+ if (!yaml_emitter_write_indicator(emitter, "!<", 1, 0, 0))
+ return 0;
+ if (!yaml_emitter_write_tag_content(emitter, emitter->tag_data.suffix,
+ emitter->tag_data.suffix_length, 0))
+ return 0;
+ if (!yaml_emitter_write_indicator(emitter, ">", 0, 0, 0))
+ return 0;
+ }
+
+ return 1;
+}
+
+/*
+ * Write a scalar.
+ */
+
+static int
+yaml_emitter_process_scalar(yaml_emitter_t *emitter)
+{
+ switch (emitter->scalar_data.style)
+ {
+ case YAML_PLAIN_SCALAR_STYLE:
+ return yaml_emitter_write_plain_scalar(emitter,
+ emitter->scalar_data.value, emitter->scalar_data.length,
+ !emitter->simple_key_context);
+
+ case YAML_SINGLE_QUOTED_SCALAR_STYLE:
+ return yaml_emitter_write_single_quoted_scalar(emitter,
+ emitter->scalar_data.value, emitter->scalar_data.length,
+ !emitter->simple_key_context);
+
+ case YAML_DOUBLE_QUOTED_SCALAR_STYLE:
+ return yaml_emitter_write_double_quoted_scalar(emitter,
+ emitter->scalar_data.value, emitter->scalar_data.length,
+ !emitter->simple_key_context);
+
+ case YAML_LITERAL_SCALAR_STYLE:
+ return yaml_emitter_write_literal_scalar(emitter,
+ emitter->scalar_data.value, emitter->scalar_data.length);
+
+ case YAML_FOLDED_SCALAR_STYLE:
+ return yaml_emitter_write_folded_scalar(emitter,
+ emitter->scalar_data.value, emitter->scalar_data.length);
+
+ default:
+ assert(1); /* Impossible. */
+ }
+
+ return 0;
+}
+
+/*
+ * Check if a %YAML directive is valid.
+ */
+
+static int
+yaml_emitter_analyze_version_directive(yaml_emitter_t *emitter,
+ yaml_version_directive_t version_directive)
+{
+ if (version_directive.major != 1 || version_directive.minor != 1) {
+ return yaml_emitter_set_emitter_error(emitter,
+ "incompatible %YAML directive");
+ }
+
+ return 1;
+}
+
+/*
+ * Check if a %TAG directive is valid.
+ */
+
+static int
+yaml_emitter_analyze_tag_directive(yaml_emitter_t *emitter,
+ yaml_tag_directive_t tag_directive)
+{
+ yaml_string_t handle;
+ yaml_string_t prefix;
+ size_t handle_length;
+ size_t prefix_length;
+
+ handle_length = strlen((char *)tag_directive.handle);
+ prefix_length = strlen((char *)tag_directive.prefix);
+ STRING_ASSIGN(handle, tag_directive.handle, handle_length);
+ STRING_ASSIGN(prefix, tag_directive.prefix, prefix_length);
+
+ if (handle.start == handle.end) {
+ return yaml_emitter_set_emitter_error(emitter,
+ "tag handle must not be empty");
+ }
+
+ if (handle.start[0] != '!') {
+ return yaml_emitter_set_emitter_error(emitter,
+ "tag handle must start with '!'");
+ }
+
+ if (handle.end[-1] != '!') {
+ return yaml_emitter_set_emitter_error(emitter,
+ "tag handle must end with '!'");
+ }
+
+ handle.pointer ++;
+
+ while (handle.pointer < handle.end-1) {
+ if (!IS_ALPHA(handle)) {
+ return yaml_emitter_set_emitter_error(emitter,
+ "tag handle must contain alphanumerical characters only");
+ }
+ MOVE(handle);
+ }
+
+ if (prefix.start == prefix.end) {
+ return yaml_emitter_set_emitter_error(emitter,
+ "tag prefix must not be empty");
+ }
+
+ return 1;
+}
+
+/*
+ * Check if an anchor is valid.
+ */
+
+static int
+yaml_emitter_analyze_anchor(yaml_emitter_t *emitter,
+ yaml_char_t *anchor, int alias)
+{
+ size_t anchor_length;
+ yaml_string_t string;
+
+ anchor_length = strlen((char *)anchor);
+ STRING_ASSIGN(string, anchor, anchor_length);
+
+ if (string.start == string.end) {
+ return yaml_emitter_set_emitter_error(emitter, alias ?
+ "alias value must not be empty" :
+ "anchor value must not be empty");
+ }
+
+ while (string.pointer != string.end) {
+ if (!IS_ALPHA(string)) {
+ return yaml_emitter_set_emitter_error(emitter, alias ?
+ "alias value must contain alphanumerical characters only" :
+ "anchor value must contain alphanumerical characters only");
+ }
+ MOVE(string);
+ }
+
+ emitter->anchor_data.anchor = string.start;
+ emitter->anchor_data.anchor_length = string.end - string.start;
+ emitter->anchor_data.alias = alias;
+
+ return 1;
+}
+
+/*
+ * Check if a tag is valid.
+ */
+
+static int
+yaml_emitter_analyze_tag(yaml_emitter_t *emitter,
+ yaml_char_t *tag)
+{
+ size_t tag_length;
+ yaml_string_t string;
+ yaml_tag_directive_t *tag_directive;
+
+ tag_length = strlen((char *)tag);
+ STRING_ASSIGN(string, tag, tag_length);
+
+ if (string.start == string.end) {
+ return yaml_emitter_set_emitter_error(emitter,
+ "tag value must not be empty");
+ }
+
+ for (tag_directive = emitter->tag_directives.start;
+ tag_directive != emitter->tag_directives.top; tag_directive ++) {
+ size_t prefix_length = strlen((char *)tag_directive->prefix);
+ if (prefix_length < (size_t)(string.end - string.start)
+ && strncmp((char *)tag_directive->prefix, (char *)string.start,
+ prefix_length) == 0)
+ {
+ emitter->tag_data.handle = tag_directive->handle;
+ emitter->tag_data.handle_length =
+ strlen((char *)tag_directive->handle);
+ emitter->tag_data.suffix = string.start + prefix_length;
+ emitter->tag_data.suffix_length =
+ (string.end - string.start) - prefix_length;
+ return 1;
+ }
+ }
+
+ emitter->tag_data.suffix = string.start;
+ emitter->tag_data.suffix_length = string.end - string.start;
+
+ return 1;
+}
+
+/*
+ * Check if a scalar is valid.
+ */
+
+static int
+yaml_emitter_analyze_scalar(yaml_emitter_t *emitter,
+ yaml_char_t *value, size_t length)
+{
+ yaml_string_t string;
+
+ int block_indicators = 0;
+ int flow_indicators = 0;
+ int line_breaks = 0;
+ int special_characters = 0;
+
+ int leading_space = 0;
+ int leading_break = 0;
+ int trailing_space = 0;
+ int trailing_break = 0;
+ int break_space = 0;
+ int space_break = 0;
+
+ int preceeded_by_whitespace = 0;
+ int followed_by_whitespace = 0;
+ int previous_space = 0;
+ int previous_break = 0;
+
+ STRING_ASSIGN(string, value, length);
+
+ emitter->scalar_data.value = value;
+ emitter->scalar_data.length = length;
+
+ if (string.start == string.end)
+ {
+ emitter->scalar_data.multiline = 0;
+ emitter->scalar_data.flow_plain_allowed = 0;
+ emitter->scalar_data.block_plain_allowed = 1;
+ emitter->scalar_data.single_quoted_allowed = 1;
+ emitter->scalar_data.block_allowed = 0;
+
+ return 1;
+ }
+
+ if ((CHECK_AT(string, '-', 0)
+ && CHECK_AT(string, '-', 1)
+ && CHECK_AT(string, '-', 2))
+ || (CHECK_AT(string, '.', 0)
+ && CHECK_AT(string, '.', 1)
+ && CHECK_AT(string, '.', 2))) {
+ block_indicators = 1;
+ flow_indicators = 1;
+ }
+
+ preceeded_by_whitespace = 1;
+ followed_by_whitespace = IS_BLANKZ_AT(string, WIDTH(string));
+
+ while (string.pointer != string.end)
+ {
+ if (string.start == string.pointer)
+ {
+ if (CHECK(string, '#') || CHECK(string, ',')
+ || CHECK(string, '[') || CHECK(string, ']')
+ || CHECK(string, '{') || CHECK(string, '}')
+ || CHECK(string, '&') || CHECK(string, '*')
+ || CHECK(string, '!') || CHECK(string, '|')
+ || CHECK(string, '>') || CHECK(string, '\'')
+ || CHECK(string, '"') || CHECK(string, '%')
+ || CHECK(string, '@') || CHECK(string, '`')) {
+ flow_indicators = 1;
+ block_indicators = 1;
+ }
+
+ if (CHECK(string, '?') || CHECK(string, ':')) {
+ flow_indicators = 1;
+ if (followed_by_whitespace) {
+ block_indicators = 1;
+ }
+ }
+
+ if (CHECK(string, '-') && followed_by_whitespace) {
+ flow_indicators = 1;
+ block_indicators = 1;
+ }
+ }
+ else
+ {
+ if (CHECK(string, ',') || CHECK(string, '?')
+ || CHECK(string, '[') || CHECK(string, ']')
+ || CHECK(string, '{') || CHECK(string, '}')) {
+ flow_indicators = 1;
+ }
+
+ if (CHECK(string, ':')) {
+ flow_indicators = 1;
+ if (followed_by_whitespace) {
+ block_indicators = 1;
+ }
+ }
+
+ if (CHECK(string, '#') && preceeded_by_whitespace) {
+ flow_indicators = 1;
+ block_indicators = 1;
+ }
+ }
+
+ if (!IS_PRINTABLE(string)
+ || (!IS_ASCII(string) && !emitter->unicode)) {
+ special_characters = 1;
+ }
+
+ if (IS_BREAK(string)) {
+ line_breaks = 1;
+ }
+
+ if (IS_SPACE(string))
+ {
+ if (string.start == string.pointer) {
+ leading_space = 1;
+ }
+ if (string.pointer+WIDTH(string) == string.end) {
+ trailing_space = 1;
+ }
+ if (previous_break) {
+ break_space = 1;
+ }
+ previous_space = 1;
+ previous_break = 0;
+ }
+ else if (IS_BREAK(string))
+ {
+ if (string.start == string.pointer) {
+ leading_break = 1;
+ }
+ if (string.pointer+WIDTH(string) == string.end) {
+ trailing_break = 1;
+ }
+ if (previous_space) {
+ space_break = 1;
+ }
+ previous_space = 0;
+ previous_break = 1;
+ }
+ else
+ {
+ previous_space = 0;
+ previous_break = 0;
+ }
+
+ preceeded_by_whitespace = IS_BLANKZ(string);
+ MOVE(string);
+ if (string.pointer != string.end) {
+ followed_by_whitespace = IS_BLANKZ_AT(string, WIDTH(string));
+ }
+ }
+
+ emitter->scalar_data.multiline = line_breaks;
+
+ emitter->scalar_data.flow_plain_allowed = 1;
+ emitter->scalar_data.block_plain_allowed = 1;
+ emitter->scalar_data.single_quoted_allowed = 1;
+ emitter->scalar_data.block_allowed = 1;
+
+ if (leading_space || leading_break || trailing_space || trailing_break) {
+ emitter->scalar_data.flow_plain_allowed = 0;
+ emitter->scalar_data.block_plain_allowed = 0;
+ }
+
+ if (trailing_space) {
+ emitter->scalar_data.block_allowed = 0;
+ }
+
+ if (break_space) {
+ emitter->scalar_data.flow_plain_allowed = 0;
+ emitter->scalar_data.block_plain_allowed = 0;
+ emitter->scalar_data.single_quoted_allowed = 0;
+ }
+
+ if (space_break || special_characters) {
+ emitter->scalar_data.flow_plain_allowed = 0;
+ emitter->scalar_data.block_plain_allowed = 0;
+ emitter->scalar_data.single_quoted_allowed = 0;
+ emitter->scalar_data.block_allowed = 0;
+ }
+
+ if (line_breaks) {
+ emitter->scalar_data.flow_plain_allowed = 0;
+ emitter->scalar_data.block_plain_allowed = 0;
+ }
+
+ if (flow_indicators) {
+ emitter->scalar_data.flow_plain_allowed = 0;
+ }
+
+ if (block_indicators) {
+ emitter->scalar_data.block_plain_allowed = 0;
+ }
+
+ return 1;
+}
+
+/*
+ * Check if the event data is valid.
+ */
+
+static int
+yaml_emitter_analyze_event(yaml_emitter_t *emitter,
+ yaml_event_t *event)
+{
+ emitter->anchor_data.anchor = NULL;
+ emitter->anchor_data.anchor_length = 0;
+ emitter->tag_data.handle = NULL;
+ emitter->tag_data.handle_length = 0;
+ emitter->tag_data.suffix = NULL;
+ emitter->tag_data.suffix_length = 0;
+ emitter->scalar_data.value = NULL;
+ emitter->scalar_data.length = 0;
+
+ switch (event->type)
+ {
+ case YAML_ALIAS_EVENT:
+ if (!yaml_emitter_analyze_anchor(emitter,
+ event->data.alias.anchor, 1))
+ return 0;
+ return 1;
+
+ case YAML_SCALAR_EVENT:
+ if (event->data.scalar.anchor) {
+ if (!yaml_emitter_analyze_anchor(emitter,
+ event->data.scalar.anchor, 0))
+ return 0;
+ }
+ if (event->data.scalar.tag && (emitter->canonical ||
+ (!event->data.scalar.plain_implicit
+ && !event->data.scalar.quoted_implicit))) {
+ if (!yaml_emitter_analyze_tag(emitter, event->data.scalar.tag))
+ return 0;
+ }
+ if (!yaml_emitter_analyze_scalar(emitter,
+ event->data.scalar.value, event->data.scalar.length))
+ return 0;
+ return 1;
+
+ case YAML_SEQUENCE_START_EVENT:
+ if (event->data.sequence_start.anchor) {
+ if (!yaml_emitter_analyze_anchor(emitter,
+ event->data.sequence_start.anchor, 0))
+ return 0;
+ }
+ if (event->data.sequence_start.tag && (emitter->canonical ||
+ !event->data.sequence_start.implicit)) {
+ if (!yaml_emitter_analyze_tag(emitter,
+ event->data.sequence_start.tag))
+ return 0;
+ }
+ return 1;
+
+ case YAML_MAPPING_START_EVENT:
+ if (event->data.mapping_start.anchor) {
+ if (!yaml_emitter_analyze_anchor(emitter,
+ event->data.mapping_start.anchor, 0))
+ return 0;
+ }
+ if (event->data.mapping_start.tag && (emitter->canonical ||
+ !event->data.mapping_start.implicit)) {
+ if (!yaml_emitter_analyze_tag(emitter,
+ event->data.mapping_start.tag))
+ return 0;
+ }
+ return 1;
+
+ default:
+ return 1;
+ }
+}
+
+/*
+ * Write the BOM character.
+ */
+
+static int
+yaml_emitter_write_bom(yaml_emitter_t *emitter)
+{
+ if (!FLUSH(emitter)) return 0;
+
+ *(emitter->buffer.pointer++) = (yaml_char_t) '\xEF';
+ *(emitter->buffer.pointer++) = (yaml_char_t) '\xBB';
+ *(emitter->buffer.pointer++) = (yaml_char_t) '\xBF';
+
+ return 1;
+}
+
+static int
+yaml_emitter_write_indent(yaml_emitter_t *emitter)
+{
+ int indent = (emitter->indent >= 0) ? emitter->indent : 0;
+
+ if (!emitter->indention || emitter->column > indent
+ || (emitter->column == indent && !emitter->whitespace)) {
+ if (!PUT_BREAK(emitter)) return 0;
+ }
+
+ while (emitter->column < indent) {
+ if (!PUT(emitter, ' ')) return 0;
+ }
+
+ emitter->whitespace = 1;
+ emitter->indention = 1;
+
+ return 1;
+}
+
+static int
+yaml_emitter_write_indicator(yaml_emitter_t *emitter,
+ const char *indicator, int need_whitespace,
+ int is_whitespace, int is_indention)
+{
+ size_t indicator_length;
+ yaml_string_t string;
+
+ indicator_length = strlen(indicator);
+ STRING_ASSIGN(string, (yaml_char_t *)indicator, indicator_length);
+
+ if (need_whitespace && !emitter->whitespace) {
+ if (!PUT(emitter, ' ')) return 0;
+ }
+
+ while (string.pointer != string.end) {
+ if (!WRITE(emitter, string)) return 0;
+ }
+
+ emitter->whitespace = is_whitespace;
+ emitter->indention = (emitter->indention && is_indention);
+ emitter->open_ended = 0;
+
+ return 1;
+}
+
+static int
+yaml_emitter_write_anchor(yaml_emitter_t *emitter,
+ yaml_char_t *value, size_t length)
+{
+ yaml_string_t string;
+ STRING_ASSIGN(string, value, length);
+
+ while (string.pointer != string.end) {
+ if (!WRITE(emitter, string)) return 0;
+ }
+
+ emitter->whitespace = 0;
+ emitter->indention = 0;
+
+ return 1;
+}
+
+static int
+yaml_emitter_write_tag_handle(yaml_emitter_t *emitter,
+ yaml_char_t *value, size_t length)
+{
+ yaml_string_t string;
+ STRING_ASSIGN(string, value, length);
+
+ if (!emitter->whitespace) {
+ if (!PUT(emitter, ' ')) return 0;
+ }
+
+ while (string.pointer != string.end) {
+ if (!WRITE(emitter, string)) return 0;
+ }
+
+ emitter->whitespace = 0;
+ emitter->indention = 0;
+
+ return 1;
+}
+
+static int
+yaml_emitter_write_tag_content(yaml_emitter_t *emitter,
+ yaml_char_t *value, size_t length,
+ int need_whitespace)
+{
+ yaml_string_t string;
+ STRING_ASSIGN(string, value, length);
+
+ if (need_whitespace && !emitter->whitespace) {
+ if (!PUT(emitter, ' ')) return 0;
+ }
+
+ while (string.pointer != string.end) {
+ if (IS_ALPHA(string)
+ || CHECK(string, ';') || CHECK(string, '/')
+ || CHECK(string, '?') || CHECK(string, ':')
+ || CHECK(string, '@') || CHECK(string, '&')
+ || CHECK(string, '=') || CHECK(string, '+')
+ || CHECK(string, '$') || CHECK(string, ',')
+ || CHECK(string, '_') || CHECK(string, '.')
+ || CHECK(string, '~') || CHECK(string, '*')
+ || CHECK(string, '\'') || CHECK(string, '(')
+ || CHECK(string, ')') || CHECK(string, '[')
+ || CHECK(string, ']')) {
+ if (!WRITE(emitter, string)) return 0;
+ }
+ else {
+ int width = WIDTH(string);
+ unsigned int value;
+ while (width --) {
+ value = *(string.pointer++);
+ if (!PUT(emitter, '%')) return 0;
+ if (!PUT(emitter, (value >> 4)
+ + ((value >> 4) < 10 ? '0' : 'A' - 10)))
+ return 0;
+ if (!PUT(emitter, (value & 0x0F)
+ + ((value & 0x0F) < 10 ? '0' : 'A' - 10)))
+ return 0;
+ }
+ }
+ }
+
+ emitter->whitespace = 0;
+ emitter->indention = 0;
+
+ return 1;
+}
+
+static int
+yaml_emitter_write_plain_scalar(yaml_emitter_t *emitter,
+ yaml_char_t *value, size_t length, int allow_breaks)
+{
+ yaml_string_t string;
+ int spaces = 0;
+ int breaks = 0;
+
+ STRING_ASSIGN(string, value, length);
+
+ if (!emitter->whitespace) {
+ if (!PUT(emitter, ' ')) return 0;
+ }
+
+ while (string.pointer != string.end)
+ {
+ if (IS_SPACE(string))
+ {
+ if (allow_breaks && !spaces
+ && emitter->column > emitter->best_width
+ && !IS_SPACE_AT(string, 1)) {
+ if (!yaml_emitter_write_indent(emitter)) return 0;
+ MOVE(string);
+ }
+ else {
+ if (!WRITE(emitter, string)) return 0;
+ }
+ spaces = 1;
+ }
+ else if (IS_BREAK(string))
+ {
+ if (!breaks && CHECK(string, '\n')) {
+ if (!PUT_BREAK(emitter)) return 0;
+ }
+ if (!WRITE_BREAK(emitter, string)) return 0;
+ emitter->indention = 1;
+ breaks = 1;
+ }
+ else
+ {
+ if (breaks) {
+ if (!yaml_emitter_write_indent(emitter)) return 0;
+ }
+ if (!WRITE(emitter, string)) return 0;
+ emitter->indention = 0;
+ spaces = 0;
+ breaks = 0;
+ }
+ }
+
+ emitter->whitespace = 0;
+ emitter->indention = 0;
+ if (emitter->root_context)
+ {
+ emitter->open_ended = 1;
+ }
+
+ return 1;
+}
+
+static int
+yaml_emitter_write_single_quoted_scalar(yaml_emitter_t *emitter,
+ yaml_char_t *value, size_t length, int allow_breaks)
+{
+ yaml_string_t string;
+ int spaces = 0;
+ int breaks = 0;
+
+ STRING_ASSIGN(string, value, length);
+
+ if (!yaml_emitter_write_indicator(emitter, "'", 1, 0, 0))
+ return 0;
+
+ while (string.pointer != string.end)
+ {
+ if (IS_SPACE(string))
+ {
+ if (allow_breaks && !spaces
+ && emitter->column > emitter->best_width
+ && string.pointer != string.start
+ && string.pointer != string.end - 1
+ && !IS_SPACE_AT(string, 1)) {
+ if (!yaml_emitter_write_indent(emitter)) return 0;
+ MOVE(string);
+ }
+ else {
+ if (!WRITE(emitter, string)) return 0;
+ }
+ spaces = 1;
+ }
+ else if (IS_BREAK(string))
+ {
+ if (!breaks && CHECK(string, '\n')) {
+ if (!PUT_BREAK(emitter)) return 0;
+ }
+ if (!WRITE_BREAK(emitter, string)) return 0;
+ emitter->indention = 1;
+ breaks = 1;
+ }
+ else
+ {
+ if (breaks) {
+ if (!yaml_emitter_write_indent(emitter)) return 0;
+ }
+ if (CHECK(string, '\'')) {
+ if (!PUT(emitter, '\'')) return 0;
+ }
+ if (!WRITE(emitter, string)) return 0;
+ emitter->indention = 0;
+ spaces = 0;
+ breaks = 0;
+ }
+ }
+
+ if (!yaml_emitter_write_indicator(emitter, "'", 0, 0, 0))
+ return 0;
+
+ emitter->whitespace = 0;
+ emitter->indention = 0;
+
+ return 1;
+}
+
+static int
+yaml_emitter_write_double_quoted_scalar(yaml_emitter_t *emitter,
+ yaml_char_t *value, size_t length, int allow_breaks)
+{
+ yaml_string_t string;
+ int spaces = 0;
+
+ STRING_ASSIGN(string, value, length);
+
+ if (!yaml_emitter_write_indicator(emitter, "\"", 1, 0, 0))
+ return 0;
+
+ while (string.pointer != string.end)
+ {
+ if (!IS_PRINTABLE(string) || (!emitter->unicode && !IS_ASCII(string))
+ || IS_BOM(string) || IS_BREAK(string)
+ || CHECK(string, '"') || CHECK(string, '\\'))
+ {
+ unsigned char octet;
+ unsigned int width;
+ unsigned int value;
+ int k;
+
+ octet = string.pointer[0];
+ width = (octet & 0x80) == 0x00 ? 1 :
+ (octet & 0xE0) == 0xC0 ? 2 :
+ (octet & 0xF0) == 0xE0 ? 3 :
+ (octet & 0xF8) == 0xF0 ? 4 : 0;
+ value = (octet & 0x80) == 0x00 ? octet & 0x7F :
+ (octet & 0xE0) == 0xC0 ? octet & 0x1F :
+ (octet & 0xF0) == 0xE0 ? octet & 0x0F :
+ (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;
+ for (k = 1; k < (int)width; k ++) {
+ octet = string.pointer[k];
+ value = (value << 6) + (octet & 0x3F);
+ }
+ string.pointer += width;
+
+ if (!PUT(emitter, '\\')) return 0;
+
+ switch (value)
+ {
+ case 0x00:
+ if (!PUT(emitter, '0')) return 0;
+ break;
+
+ case 0x07:
+ if (!PUT(emitter, 'a')) return 0;
+ break;
+
+ case 0x08:
+ if (!PUT(emitter, 'b')) return 0;
+ break;
+
+ case 0x09:
+ if (!PUT(emitter, 't')) return 0;
+ break;
+
+ case 0x0A:
+ if (!PUT(emitter, 'n')) return 0;
+ break;
+
+ case 0x0B:
+ if (!PUT(emitter, 'v')) return 0;
+ break;
+
+ case 0x0C:
+ if (!PUT(emitter, 'f')) return 0;
+ break;
+
+ case 0x0D:
+ if (!PUT(emitter, 'r')) return 0;
+ break;
+
+ case 0x1B:
+ if (!PUT(emitter, 'e')) return 0;
+ break;
+
+ case 0x22:
+ if (!PUT(emitter, '\"')) return 0;
+ break;
+
+ case 0x5C:
+ if (!PUT(emitter, '\\')) return 0;
+ break;
+
+ case 0x85:
+ if (!PUT(emitter, 'N')) return 0;
+ break;
+
+ case 0xA0:
+ if (!PUT(emitter, '_')) return 0;
+ break;
+
+ case 0x2028:
+ if (!PUT(emitter, 'L')) return 0;
+ break;
+
+ case 0x2029:
+ if (!PUT(emitter, 'P')) return 0;
+ break;
+
+ default:
+ if (value <= 0xFF) {
+ if (!PUT(emitter, 'x')) return 0;
+ width = 2;
+ }
+ else if (value <= 0xFFFF) {
+ if (!PUT(emitter, 'u')) return 0;
+ width = 4;
+ }
+ else {
+ if (!PUT(emitter, 'U')) return 0;
+ width = 8;
+ }
+ for (k = (width-1)*4; k >= 0; k -= 4) {
+ int digit = (value >> k) & 0x0F;
+ if (!PUT(emitter, digit + (digit < 10 ? '0' : 'A'-10)))
+ return 0;
+ }
+ }
+ spaces = 0;
+ }
+ else if (IS_SPACE(string))
+ {
+ if (allow_breaks && !spaces
+ && emitter->column > emitter->best_width
+ && string.pointer != string.start
+ && string.pointer != string.end - 1) {
+ if (!yaml_emitter_write_indent(emitter)) return 0;
+ if (IS_SPACE_AT(string, 1)) {
+ if (!PUT(emitter, '\\')) return 0;
+ }
+ MOVE(string);
+ }
+ else {
+ if (!WRITE(emitter, string)) return 0;
+ }
+ spaces = 1;
+ }
+ else
+ {
+ if (!WRITE(emitter, string)) return 0;
+ spaces = 0;
+ }
+ }
+
+ if (!yaml_emitter_write_indicator(emitter, "\"", 0, 0, 0))
+ return 0;
+
+ emitter->whitespace = 0;
+ emitter->indention = 0;
+
+ return 1;
+}
+
+static int
+yaml_emitter_write_block_scalar_hints(yaml_emitter_t *emitter,
+ yaml_string_t string)
+{
+ char indent_hint[2];
+ const char *chomp_hint = NULL;
+
+ if (IS_SPACE(string) || IS_BREAK(string))
+ {
+ indent_hint[0] = '0' + (char)emitter->best_indent;
+ indent_hint[1] = '\0';
+ if (!yaml_emitter_write_indicator(emitter, indent_hint, 0, 0, 0))
+ return 0;
+ }
+
+ emitter->open_ended = 0;
+
+ string.pointer = string.end;
+ if (string.start == string.pointer)
+ {
+ chomp_hint = "-";
+ }
+ else
+ {
+ do {
+ string.pointer --;
+ } while ((*string.pointer & 0xC0) == 0x80);
+ if (!IS_BREAK(string))
+ {
+ chomp_hint = "-";
+ }
+ else if (string.start == string.pointer)
+ {
+ chomp_hint = "+";
+ emitter->open_ended = 1;
+ }
+ else
+ {
+ do {
+ string.pointer --;
+ } while ((*string.pointer & 0xC0) == 0x80);
+ if (IS_BREAK(string))
+ {
+ chomp_hint = "+";
+ emitter->open_ended = 1;
+ }
+ }
+ }
+
+ if (chomp_hint)
+ {
+ if (!yaml_emitter_write_indicator(emitter, chomp_hint, 0, 0, 0))
+ return 0;
+ }
+
+ return 1;
+}
+
+static int
+yaml_emitter_write_literal_scalar(yaml_emitter_t *emitter,
+ yaml_char_t *value, size_t length)
+{
+ yaml_string_t string;
+ int breaks = 1;
+
+ STRING_ASSIGN(string, value, length);
+
+ if (!yaml_emitter_write_indicator(emitter, "|", 1, 0, 0))
+ return 0;
+ if (!yaml_emitter_write_block_scalar_hints(emitter, string))
+ return 0;
+ if (!PUT_BREAK(emitter)) return 0;
+ emitter->indention = 1;
+ emitter->whitespace = 1;
+
+ while (string.pointer != string.end)
+ {
+ if (IS_BREAK(string))
+ {
+ if (!WRITE_BREAK(emitter, string)) return 0;
+ emitter->indention = 1;
+ breaks = 1;
+ }
+ else
+ {
+ if (breaks) {
+ if (!yaml_emitter_write_indent(emitter)) return 0;
+ }
+ if (!WRITE(emitter, string)) return 0;
+ emitter->indention = 0;
+ breaks = 0;
+ }
+ }
+
+ return 1;
+}
+
+static int
+yaml_emitter_write_folded_scalar(yaml_emitter_t *emitter,
+ yaml_char_t *value, size_t length)
+{
+ yaml_string_t string;
+ int breaks = 1;
+ int leading_spaces = 1;
+
+ STRING_ASSIGN(string, value, length);
+
+ if (!yaml_emitter_write_indicator(emitter, ">", 1, 0, 0))
+ return 0;
+ if (!yaml_emitter_write_block_scalar_hints(emitter, string))
+ return 0;
+ if (!PUT_BREAK(emitter)) return 0;
+ emitter->indention = 1;
+ emitter->whitespace = 1;
+
+ while (string.pointer != string.end)
+ {
+ if (IS_BREAK(string))
+ {
+ if (!breaks && !leading_spaces && CHECK(string, '\n')) {
+ int k = 0;
+ while (IS_BREAK_AT(string, k)) {
+ k += WIDTH_AT(string, k);
+ }
+ if (!IS_BLANKZ_AT(string, k)) {
+ if (!PUT_BREAK(emitter)) return 0;
+ }
+ }
+ if (!WRITE_BREAK(emitter, string)) return 0;
+ emitter->indention = 1;
+ breaks = 1;
+ }
+ else
+ {
+ if (breaks) {
+ if (!yaml_emitter_write_indent(emitter)) return 0;
+ leading_spaces = IS_BLANK(string);
+ }
+ if (!breaks && IS_SPACE(string) && !IS_SPACE_AT(string, 1)
+ && emitter->column > emitter->best_width) {
+ if (!yaml_emitter_write_indent(emitter)) return 0;
+ MOVE(string);
+ }
+ else {
+ if (!WRITE(emitter, string)) return 0;
+ }
+ emitter->indention = 0;
+ breaks = 0;
+ }
+ }
+
+ return 1;
+}
+
diff --git a/jni/ruby/ext/psych/yaml/loader.c b/jni/ruby/ext/psych/yaml/loader.c
new file mode 100644
index 0000000..cb3ea93
--- /dev/null
+++ b/jni/ruby/ext/psych/yaml/loader.c
@@ -0,0 +1,459 @@
+
+#include "yaml_private.h"
+
+/*
+ * API functions.
+ */
+
+YAML_DECLARE(int)
+yaml_parser_load(yaml_parser_t *parser, yaml_document_t *document);
+
+/*
+ * Error handling.
+ */
+
+static int
+yaml_parser_set_composer_error(yaml_parser_t *parser,
+ const char *problem, yaml_mark_t problem_mark);
+
+static int
+yaml_parser_set_composer_error_context(yaml_parser_t *parser,
+ const char *context, yaml_mark_t context_mark,
+ const char *problem, yaml_mark_t problem_mark);
+
+
+/*
+ * Alias handling.
+ */
+
+static int
+yaml_parser_register_anchor(yaml_parser_t *parser,
+ int index, yaml_char_t *anchor);
+
+/*
+ * Clean up functions.
+ */
+
+static void
+yaml_parser_delete_aliases(yaml_parser_t *parser);
+
+/*
+ * Composer functions.
+ */
+
+static int
+yaml_parser_load_document(yaml_parser_t *parser, yaml_event_t *first_event);
+
+static int
+yaml_parser_load_node(yaml_parser_t *parser, yaml_event_t *first_event);
+
+static int
+yaml_parser_load_alias(yaml_parser_t *parser, yaml_event_t *first_event);
+
+static int
+yaml_parser_load_scalar(yaml_parser_t *parser, yaml_event_t *first_event);
+
+static int
+yaml_parser_load_sequence(yaml_parser_t *parser, yaml_event_t *first_event);
+
+static int
+yaml_parser_load_mapping(yaml_parser_t *parser, yaml_event_t *first_event);
+
+/*
+ * Load the next document of the stream.
+ */
+
+YAML_DECLARE(int)
+yaml_parser_load(yaml_parser_t *parser, yaml_document_t *document)
+{
+ yaml_event_t event;
+
+ assert(parser); /* Non-NULL parser object is expected. */
+ assert(document); /* Non-NULL document object is expected. */
+
+ memset(document, 0, sizeof(yaml_document_t));
+ if (!STACK_INIT(parser, document->nodes, INITIAL_STACK_SIZE))
+ goto error;
+
+ if (!parser->stream_start_produced) {
+ if (!yaml_parser_parse(parser, &event)) goto error;
+ assert(event.type == YAML_STREAM_START_EVENT);
+ /* STREAM-START is expected. */
+ }
+
+ if (parser->stream_end_produced) {
+ return 1;
+ }
+
+ if (!yaml_parser_parse(parser, &event)) goto error;
+ if (event.type == YAML_STREAM_END_EVENT) {
+ return 1;
+ }
+
+ if (!STACK_INIT(parser, parser->aliases, INITIAL_STACK_SIZE))
+ goto error;
+
+ parser->document = document;
+
+ if (!yaml_parser_load_document(parser, &event)) goto error;
+
+ yaml_parser_delete_aliases(parser);
+ parser->document = NULL;
+
+ return 1;
+
+error:
+
+ yaml_parser_delete_aliases(parser);
+ yaml_document_delete(document);
+ parser->document = NULL;
+
+ return 0;
+}
+
+/*
+ * Set composer error.
+ */
+
+static int
+yaml_parser_set_composer_error(yaml_parser_t *parser,
+ const char *problem, yaml_mark_t problem_mark)
+{
+ parser->error = YAML_COMPOSER_ERROR;
+ parser->problem = problem;
+ parser->problem_mark = problem_mark;
+
+ return 0;
+}
+
+/*
+ * Set composer error with context.
+ */
+
+static int
+yaml_parser_set_composer_error_context(yaml_parser_t *parser,
+ const char *context, yaml_mark_t context_mark,
+ const char *problem, yaml_mark_t problem_mark)
+{
+ parser->error = YAML_COMPOSER_ERROR;
+ parser->context = context;
+ parser->context_mark = context_mark;
+ parser->problem = problem;
+ parser->problem_mark = problem_mark;
+
+ return 0;
+}
+
+/*
+ * Delete the stack of aliases.
+ */
+
+static void
+yaml_parser_delete_aliases(yaml_parser_t *parser)
+{
+ while (!STACK_EMPTY(parser, parser->aliases)) {
+ yaml_free(POP(parser, parser->aliases).anchor);
+ }
+ STACK_DEL(parser, parser->aliases);
+}
+
+/*
+ * Compose a document object.
+ */
+
+static int
+yaml_parser_load_document(yaml_parser_t *parser, yaml_event_t *first_event)
+{
+ yaml_event_t event;
+
+ assert(first_event->type == YAML_DOCUMENT_START_EVENT);
+ /* DOCUMENT-START is expected. */
+
+ parser->document->version_directive
+ = first_event->data.document_start.version_directive;
+ parser->document->tag_directives.start
+ = first_event->data.document_start.tag_directives.start;
+ parser->document->tag_directives.end
+ = first_event->data.document_start.tag_directives.end;
+ parser->document->start_implicit
+ = first_event->data.document_start.implicit;
+ parser->document->start_mark = first_event->start_mark;
+
+ if (!yaml_parser_parse(parser, &event)) return 0;
+
+ if (!yaml_parser_load_node(parser, &event)) return 0;
+
+ if (!yaml_parser_parse(parser, &event)) return 0;
+ assert(event.type == YAML_DOCUMENT_END_EVENT);
+ /* DOCUMENT-END is expected. */
+
+ parser->document->end_implicit = event.data.document_end.implicit;
+ parser->document->end_mark = event.end_mark;
+
+ return 1;
+}
+
+/*
+ * Compose a node.
+ */
+
+static int
+yaml_parser_load_node(yaml_parser_t *parser, yaml_event_t *first_event)
+{
+ switch (first_event->type) {
+ case YAML_ALIAS_EVENT:
+ return yaml_parser_load_alias(parser, first_event);
+ case YAML_SCALAR_EVENT:
+ return yaml_parser_load_scalar(parser, first_event);
+ case YAML_SEQUENCE_START_EVENT:
+ return yaml_parser_load_sequence(parser, first_event);
+ case YAML_MAPPING_START_EVENT:
+ return yaml_parser_load_mapping(parser, first_event);
+ default:
+ assert(0); /* Could not happen. */
+ return 0;
+ }
+
+ return 0;
+}
+
+/*
+ * Add an anchor.
+ */
+
+static int
+yaml_parser_register_anchor(yaml_parser_t *parser,
+ int index, yaml_char_t *anchor)
+{
+ yaml_alias_data_t data;
+ yaml_alias_data_t *alias_data;
+
+ if (!anchor) return 1;
+
+ data.anchor = anchor;
+ data.index = index;
+ data.mark = parser->document->nodes.start[index-1].start_mark;
+
+ for (alias_data = parser->aliases.start;
+ alias_data != parser->aliases.top; alias_data ++) {
+ if (strcmp((char *)alias_data->anchor, (char *)anchor) == 0) {
+ yaml_free(anchor);
+ return yaml_parser_set_composer_error_context(parser,
+ "found duplicate anchor; first occurence",
+ alias_data->mark, "second occurence", data.mark);
+ }
+ }
+
+ if (!PUSH(parser, parser->aliases, data)) {
+ yaml_free(anchor);
+ return 0;
+ }
+
+ return 1;
+}
+
+/*
+ * Compose a node corresponding to an alias.
+ */
+
+static int
+yaml_parser_load_alias(yaml_parser_t *parser, yaml_event_t *first_event)
+{
+ yaml_char_t *anchor = first_event->data.alias.anchor;
+ yaml_alias_data_t *alias_data;
+
+ for (alias_data = parser->aliases.start;
+ alias_data != parser->aliases.top; alias_data ++) {
+ if (strcmp((char *)alias_data->anchor, (char *)anchor) == 0) {
+ yaml_free(anchor);
+ return alias_data->index;
+ }
+ }
+
+ yaml_free(anchor);
+ return yaml_parser_set_composer_error(parser, "found undefined alias",
+ first_event->start_mark);
+}
+
+/*
+ * Compose a scalar node.
+ */
+
+static int
+yaml_parser_load_scalar(yaml_parser_t *parser, yaml_event_t *first_event)
+{
+ yaml_node_t node;
+ ptrdiff_t node_index;
+ int index;
+ yaml_char_t *tag = first_event->data.scalar.tag;
+
+ if (!STACK_LIMIT(parser, parser->document->nodes, INT_MAX-1)) goto error;
+
+ if (!tag || strcmp((char *)tag, "!") == 0) {
+ yaml_free(tag);
+ tag = yaml_strdup((yaml_char_t *)YAML_DEFAULT_SCALAR_TAG);
+ if (!tag) goto error;
+ }
+
+ SCALAR_NODE_INIT(node, tag, first_event->data.scalar.value,
+ first_event->data.scalar.length, first_event->data.scalar.style,
+ first_event->start_mark, first_event->end_mark);
+
+ if (!PUSH(parser, parser->document->nodes, node)) goto error;
+
+ node_index = parser->document->nodes.top - parser->document->nodes.start;
+#if PTRDIFF_MAX > INT_MAX
+ if (node_index > INT_MAX) goto error;
+#endif
+ index = (int)node_index;
+
+ if (!yaml_parser_register_anchor(parser, index,
+ first_event->data.scalar.anchor)) return 0;
+
+ return index;
+
+error:
+ yaml_free(tag);
+ yaml_free(first_event->data.scalar.anchor);
+ yaml_free(first_event->data.scalar.value);
+ return 0;
+}
+
+/*
+ * Compose a sequence node.
+ */
+
+static int
+yaml_parser_load_sequence(yaml_parser_t *parser, yaml_event_t *first_event)
+{
+ yaml_event_t event;
+ yaml_node_t node;
+ struct {
+ yaml_node_item_t *start;
+ yaml_node_item_t *end;
+ yaml_node_item_t *top;
+ } items = { NULL, NULL, NULL };
+ int index, item_index;
+ ptrdiff_t node_index;
+ yaml_char_t *tag = first_event->data.sequence_start.tag;
+
+ if (!STACK_LIMIT(parser, parser->document->nodes, INT_MAX-1)) goto error;
+
+ if (!tag || strcmp((char *)tag, "!") == 0) {
+ yaml_free(tag);
+ tag = yaml_strdup((yaml_char_t *)YAML_DEFAULT_SEQUENCE_TAG);
+ if (!tag) goto error;
+ }
+
+ if (!STACK_INIT(parser, items, INITIAL_STACK_SIZE)) goto error;
+
+ SEQUENCE_NODE_INIT(node, tag, items.start, items.end,
+ first_event->data.sequence_start.style,
+ first_event->start_mark, first_event->end_mark);
+
+ if (!PUSH(parser, parser->document->nodes, node)) goto error;
+
+ node_index = parser->document->nodes.top - parser->document->nodes.start;
+#if PTRDIFF_MAX > INT_MAX
+ if (node_index > INT_MAX) goto error;
+#endif
+ index = (int)node_index;
+
+ if (!yaml_parser_register_anchor(parser, index,
+ first_event->data.sequence_start.anchor)) return 0;
+
+ if (!yaml_parser_parse(parser, &event)) return 0;
+
+ while (event.type != YAML_SEQUENCE_END_EVENT) {
+ if (!STACK_LIMIT(parser,
+ parser->document->nodes.start[index-1].data.sequence.items,
+ INT_MAX-1)) return 0;
+ item_index = yaml_parser_load_node(parser, &event);
+ if (!item_index) return 0;
+ if (!PUSH(parser,
+ parser->document->nodes.start[index-1].data.sequence.items,
+ item_index)) return 0;
+ if (!yaml_parser_parse(parser, &event)) return 0;
+ }
+
+ parser->document->nodes.start[index-1].end_mark = event.end_mark;
+
+ return index;
+
+error:
+ yaml_free(tag);
+ yaml_free(first_event->data.sequence_start.anchor);
+ return 0;
+}
+
+/*
+ * Compose a mapping node.
+ */
+
+static int
+yaml_parser_load_mapping(yaml_parser_t *parser, yaml_event_t *first_event)
+{
+ yaml_event_t event;
+ yaml_node_t node;
+ struct {
+ yaml_node_pair_t *start;
+ yaml_node_pair_t *end;
+ yaml_node_pair_t *top;
+ } pairs = { NULL, NULL, NULL };
+ int index;
+ ptrdiff_t node_index;
+ yaml_node_pair_t pair;
+ yaml_char_t *tag = first_event->data.mapping_start.tag;
+
+ if (!STACK_LIMIT(parser, parser->document->nodes, INT_MAX-1)) goto error;
+
+ if (!tag || strcmp((char *)tag, "!") == 0) {
+ yaml_free(tag);
+ tag = yaml_strdup((yaml_char_t *)YAML_DEFAULT_MAPPING_TAG);
+ if (!tag) goto error;
+ }
+
+ if (!STACK_INIT(parser, pairs, INITIAL_STACK_SIZE)) goto error;
+
+ MAPPING_NODE_INIT(node, tag, pairs.start, pairs.end,
+ first_event->data.mapping_start.style,
+ first_event->start_mark, first_event->end_mark);
+
+ if (!PUSH(parser, parser->document->nodes, node)) goto error;
+
+ node_index = parser->document->nodes.top - parser->document->nodes.start;
+#if PTRDIFF_MAX > INT_MAX
+ if (node_index > INT_MAX) goto error;
+#endif
+ index = (int)node_index;
+
+ if (!yaml_parser_register_anchor(parser, index,
+ first_event->data.mapping_start.anchor)) return 0;
+
+ if (!yaml_parser_parse(parser, &event)) return 0;
+
+ while (event.type != YAML_MAPPING_END_EVENT) {
+ if (!STACK_LIMIT(parser,
+ parser->document->nodes.start[index-1].data.mapping.pairs,
+ INT_MAX-1)) return 0;
+ pair.key = yaml_parser_load_node(parser, &event);
+ if (!pair.key) return 0;
+ if (!yaml_parser_parse(parser, &event)) return 0;
+ pair.value = yaml_parser_load_node(parser, &event);
+ if (!pair.value) return 0;
+ if (!PUSH(parser,
+ parser->document->nodes.start[index-1].data.mapping.pairs,
+ pair)) return 0;
+ if (!yaml_parser_parse(parser, &event)) return 0;
+ }
+
+ parser->document->nodes.start[index-1].end_mark = event.end_mark;
+
+ return index;
+
+error:
+ yaml_free(tag);
+ yaml_free(first_event->data.mapping_start.anchor);
+ return 0;
+}
+
diff --git a/jni/ruby/ext/psych/yaml/parser.c b/jni/ruby/ext/psych/yaml/parser.c
new file mode 100644
index 0000000..32671b2
--- /dev/null
+++ b/jni/ruby/ext/psych/yaml/parser.c
@@ -0,0 +1,1370 @@
+
+/*
+ * The parser implements the following grammar:
+ *
+ * stream ::= STREAM-START implicit_document? explicit_document* STREAM-END
+ * implicit_document ::= block_node DOCUMENT-END*
+ * explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
+ * block_node_or_indentless_sequence ::=
+ * ALIAS
+ * | properties (block_content | indentless_block_sequence)?
+ * | block_content
+ * | indentless_block_sequence
+ * block_node ::= ALIAS
+ * | properties block_content?
+ * | block_content
+ * flow_node ::= ALIAS
+ * | properties flow_content?
+ * | flow_content
+ * properties ::= TAG ANCHOR? | ANCHOR TAG?
+ * block_content ::= block_collection | flow_collection | SCALAR
+ * flow_content ::= flow_collection | SCALAR
+ * block_collection ::= block_sequence | block_mapping
+ * flow_collection ::= flow_sequence | flow_mapping
+ * block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END
+ * indentless_sequence ::= (BLOCK-ENTRY block_node?)+
+ * block_mapping ::= BLOCK-MAPPING_START
+ * ((KEY block_node_or_indentless_sequence?)?
+ * (VALUE block_node_or_indentless_sequence?)?)*
+ * BLOCK-END
+ * flow_sequence ::= FLOW-SEQUENCE-START
+ * (flow_sequence_entry FLOW-ENTRY)*
+ * flow_sequence_entry?
+ * FLOW-SEQUENCE-END
+ * flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+ * flow_mapping ::= FLOW-MAPPING-START
+ * (flow_mapping_entry FLOW-ENTRY)*
+ * flow_mapping_entry?
+ * FLOW-MAPPING-END
+ * flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+ */
+
+#include "yaml_private.h"
+
+/*
+ * Peek the next token in the token queue.
+ */
+
+#define PEEK_TOKEN(parser) \
+ ((parser->token_available || yaml_parser_fetch_more_tokens(parser)) ? \
+ parser->tokens.head : NULL)
+
+/*
+ * Remove the next token from the queue (must be called after PEEK_TOKEN).
+ */
+
+#define SKIP_TOKEN(parser) \
+ (parser->token_available = 0, \
+ parser->tokens_parsed ++, \
+ parser->stream_end_produced = \
+ (parser->tokens.head->type == YAML_STREAM_END_TOKEN), \
+ parser->tokens.head ++)
+
+/*
+ * Public API declarations.
+ */
+
+YAML_DECLARE(int)
+yaml_parser_parse(yaml_parser_t *parser, yaml_event_t *event);
+
+/*
+ * Error handling.
+ */
+
+static int
+yaml_parser_set_parser_error(yaml_parser_t *parser,
+ const char *problem, yaml_mark_t problem_mark);
+
+static int
+yaml_parser_set_parser_error_context(yaml_parser_t *parser,
+ const char *context, yaml_mark_t context_mark,
+ const char *problem, yaml_mark_t problem_mark);
+
+/*
+ * State functions.
+ */
+
+static int
+yaml_parser_state_machine(yaml_parser_t *parser, yaml_event_t *event);
+
+static int
+yaml_parser_parse_stream_start(yaml_parser_t *parser, yaml_event_t *event);
+
+static int
+yaml_parser_parse_document_start(yaml_parser_t *parser, yaml_event_t *event,
+ int implicit);
+
+static int
+yaml_parser_parse_document_content(yaml_parser_t *parser, yaml_event_t *event);
+
+static int
+yaml_parser_parse_document_end(yaml_parser_t *parser, yaml_event_t *event);
+
+static int
+yaml_parser_parse_node(yaml_parser_t *parser, yaml_event_t *event,
+ int block, int indentless_sequence);
+
+static int
+yaml_parser_parse_block_sequence_entry(yaml_parser_t *parser,
+ yaml_event_t *event, int first);
+
+static int
+yaml_parser_parse_indentless_sequence_entry(yaml_parser_t *parser,
+ yaml_event_t *event);
+
+static int
+yaml_parser_parse_block_mapping_key(yaml_parser_t *parser,
+ yaml_event_t *event, int first);
+
+static int
+yaml_parser_parse_block_mapping_value(yaml_parser_t *parser,
+ yaml_event_t *event);
+
+static int
+yaml_parser_parse_flow_sequence_entry(yaml_parser_t *parser,
+ yaml_event_t *event, int first);
+
+static int
+yaml_parser_parse_flow_sequence_entry_mapping_key(yaml_parser_t *parser,
+ yaml_event_t *event);
+
+static int
+yaml_parser_parse_flow_sequence_entry_mapping_value(yaml_parser_t *parser,
+ yaml_event_t *event);
+
+static int
+yaml_parser_parse_flow_sequence_entry_mapping_end(yaml_parser_t *parser,
+ yaml_event_t *event);
+
+static int
+yaml_parser_parse_flow_mapping_key(yaml_parser_t *parser,
+ yaml_event_t *event, int first);
+
+static int
+yaml_parser_parse_flow_mapping_value(yaml_parser_t *parser,
+ yaml_event_t *event, int empty);
+
+/*
+ * Utility functions.
+ */
+
+static int
+yaml_parser_process_empty_scalar(yaml_parser_t *parser,
+ yaml_event_t *event, yaml_mark_t mark);
+
+static int
+yaml_parser_process_directives(yaml_parser_t *parser,
+ yaml_version_directive_t **version_directive_ref,
+ yaml_tag_directive_t **tag_directives_start_ref,
+ yaml_tag_directive_t **tag_directives_end_ref);
+
+static int
+yaml_parser_append_tag_directive(yaml_parser_t *parser,
+ yaml_tag_directive_t value, int allow_duplicates, yaml_mark_t mark);
+
+/*
+ * Get the next event.
+ */
+
+YAML_DECLARE(int)
+yaml_parser_parse(yaml_parser_t *parser, yaml_event_t *event)
+{
+ assert(parser); /* Non-NULL parser object is expected. */
+ assert(event); /* Non-NULL event object is expected. */
+
+ /* Erase the event object. */
+
+ memset(event, 0, sizeof(yaml_event_t));
+
+ /* No events after the end of the stream or error. */
+
+ if (parser->stream_end_produced || parser->error ||
+ parser->state == YAML_PARSE_END_STATE) {
+ return 1;
+ }
+
+ /* Generate the next event. */
+
+ return yaml_parser_state_machine(parser, event);
+}
+
+/*
+ * Set parser error.
+ */
+
+static int
+yaml_parser_set_parser_error(yaml_parser_t *parser,
+ const char *problem, yaml_mark_t problem_mark)
+{
+ parser->error = YAML_PARSER_ERROR;
+ parser->problem = problem;
+ parser->problem_mark = problem_mark;
+
+ return 0;
+}
+
+static int
+yaml_parser_set_parser_error_context(yaml_parser_t *parser,
+ const char *context, yaml_mark_t context_mark,
+ const char *problem, yaml_mark_t problem_mark)
+{
+ parser->error = YAML_PARSER_ERROR;
+ parser->context = context;
+ parser->context_mark = context_mark;
+ parser->problem = problem;
+ parser->problem_mark = problem_mark;
+
+ return 0;
+}
+
+
+/*
+ * State dispatcher.
+ */
+
+static int
+yaml_parser_state_machine(yaml_parser_t *parser, yaml_event_t *event)
+{
+ switch (parser->state)
+ {
+ case YAML_PARSE_STREAM_START_STATE:
+ return yaml_parser_parse_stream_start(parser, event);
+
+ case YAML_PARSE_IMPLICIT_DOCUMENT_START_STATE:
+ return yaml_parser_parse_document_start(parser, event, 1);
+
+ case YAML_PARSE_DOCUMENT_START_STATE:
+ return yaml_parser_parse_document_start(parser, event, 0);
+
+ case YAML_PARSE_DOCUMENT_CONTENT_STATE:
+ return yaml_parser_parse_document_content(parser, event);
+
+ case YAML_PARSE_DOCUMENT_END_STATE:
+ return yaml_parser_parse_document_end(parser, event);
+
+ case YAML_PARSE_BLOCK_NODE_STATE:
+ return yaml_parser_parse_node(parser, event, 1, 0);
+
+ case YAML_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE:
+ return yaml_parser_parse_node(parser, event, 1, 1);
+
+ case YAML_PARSE_FLOW_NODE_STATE:
+ return yaml_parser_parse_node(parser, event, 0, 0);
+
+ case YAML_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE:
+ return yaml_parser_parse_block_sequence_entry(parser, event, 1);
+
+ case YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE:
+ return yaml_parser_parse_block_sequence_entry(parser, event, 0);
+
+ case YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE:
+ return yaml_parser_parse_indentless_sequence_entry(parser, event);
+
+ case YAML_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE:
+ return yaml_parser_parse_block_mapping_key(parser, event, 1);
+
+ case YAML_PARSE_BLOCK_MAPPING_KEY_STATE:
+ return yaml_parser_parse_block_mapping_key(parser, event, 0);
+
+ case YAML_PARSE_BLOCK_MAPPING_VALUE_STATE:
+ return yaml_parser_parse_block_mapping_value(parser, event);
+
+ case YAML_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE:
+ return yaml_parser_parse_flow_sequence_entry(parser, event, 1);
+
+ case YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE:
+ return yaml_parser_parse_flow_sequence_entry(parser, event, 0);
+
+ case YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE:
+ return yaml_parser_parse_flow_sequence_entry_mapping_key(parser, event);
+
+ case YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE:
+ return yaml_parser_parse_flow_sequence_entry_mapping_value(parser, event);
+
+ case YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE:
+ return yaml_parser_parse_flow_sequence_entry_mapping_end(parser, event);
+
+ case YAML_PARSE_FLOW_MAPPING_FIRST_KEY_STATE:
+ return yaml_parser_parse_flow_mapping_key(parser, event, 1);
+
+ case YAML_PARSE_FLOW_MAPPING_KEY_STATE:
+ return yaml_parser_parse_flow_mapping_key(parser, event, 0);
+
+ case YAML_PARSE_FLOW_MAPPING_VALUE_STATE:
+ return yaml_parser_parse_flow_mapping_value(parser, event, 0);
+
+ case YAML_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE:
+ return yaml_parser_parse_flow_mapping_value(parser, event, 1);
+
+ default:
+ assert(1); /* Invalid state. */
+ }
+
+ return 0;
+}
+
+/*
+ * Parse the production:
+ * stream ::= STREAM-START implicit_document? explicit_document* STREAM-END
+ * ************
+ */
+
+static int
+yaml_parser_parse_stream_start(yaml_parser_t *parser, yaml_event_t *event)
+{
+ yaml_token_t *token;
+
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+
+ if (token->type != YAML_STREAM_START_TOKEN) {
+ return yaml_parser_set_parser_error(parser,
+ "did not find expected <stream-start>", token->start_mark);
+ }
+
+ parser->state = YAML_PARSE_IMPLICIT_DOCUMENT_START_STATE;
+ STREAM_START_EVENT_INIT(*event, token->data.stream_start.encoding,
+ token->start_mark, token->start_mark);
+ SKIP_TOKEN(parser);
+
+ return 1;
+}
+
+/*
+ * Parse the productions:
+ * implicit_document ::= block_node DOCUMENT-END*
+ * *
+ * explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
+ * *************************
+ */
+
+static int
+yaml_parser_parse_document_start(yaml_parser_t *parser, yaml_event_t *event,
+ int implicit)
+{
+ yaml_token_t *token;
+ yaml_version_directive_t *version_directive = NULL;
+ struct {
+ yaml_tag_directive_t *start;
+ yaml_tag_directive_t *end;
+ } tag_directives = { NULL, NULL };
+
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+
+ /* Parse extra document end indicators. */
+
+ if (!implicit)
+ {
+ while (token->type == YAML_DOCUMENT_END_TOKEN) {
+ SKIP_TOKEN(parser);
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+ }
+ }
+
+ /* Parse an implicit document. */
+
+ if (implicit && token->type != YAML_VERSION_DIRECTIVE_TOKEN &&
+ token->type != YAML_TAG_DIRECTIVE_TOKEN &&
+ token->type != YAML_DOCUMENT_START_TOKEN &&
+ token->type != YAML_STREAM_END_TOKEN)
+ {
+ if (!yaml_parser_process_directives(parser, NULL, NULL, NULL))
+ return 0;
+ if (!PUSH(parser, parser->states, YAML_PARSE_DOCUMENT_END_STATE))
+ return 0;
+ parser->state = YAML_PARSE_BLOCK_NODE_STATE;
+ DOCUMENT_START_EVENT_INIT(*event, NULL, NULL, NULL, 1,
+ token->start_mark, token->start_mark);
+ return 1;
+ }
+
+ /* Parse an explicit document. */
+
+ else if (token->type != YAML_STREAM_END_TOKEN)
+ {
+ yaml_mark_t start_mark, end_mark;
+ start_mark = token->start_mark;
+ if (!yaml_parser_process_directives(parser, &version_directive,
+ &tag_directives.start, &tag_directives.end))
+ return 0;
+ token = PEEK_TOKEN(parser);
+ if (!token) goto error;
+ if (token->type != YAML_DOCUMENT_START_TOKEN) {
+ yaml_parser_set_parser_error(parser,
+ "did not find expected <document start>", token->start_mark);
+ goto error;
+ }
+ if (!PUSH(parser, parser->states, YAML_PARSE_DOCUMENT_END_STATE))
+ goto error;
+ parser->state = YAML_PARSE_DOCUMENT_CONTENT_STATE;
+ end_mark = token->end_mark;
+ DOCUMENT_START_EVENT_INIT(*event, version_directive,
+ tag_directives.start, tag_directives.end, 0,
+ start_mark, end_mark);
+ SKIP_TOKEN(parser);
+ version_directive = NULL;
+ tag_directives.start = tag_directives.end = NULL;
+ return 1;
+ }
+
+ /* Parse the stream end. */
+
+ else
+ {
+ parser->state = YAML_PARSE_END_STATE;
+ STREAM_END_EVENT_INIT(*event, token->start_mark, token->end_mark);
+ SKIP_TOKEN(parser);
+ return 1;
+ }
+
+error:
+ yaml_free(version_directive);
+ while (tag_directives.start != tag_directives.end) {
+ yaml_free(tag_directives.end[-1].handle);
+ yaml_free(tag_directives.end[-1].prefix);
+ tag_directives.end --;
+ }
+ yaml_free(tag_directives.start);
+ return 0;
+}
+
+/*
+ * Parse the productions:
+ * explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
+ * ***********
+ */
+
+static int
+yaml_parser_parse_document_content(yaml_parser_t *parser, yaml_event_t *event)
+{
+ yaml_token_t *token;
+
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+
+ if (token->type == YAML_VERSION_DIRECTIVE_TOKEN ||
+ token->type == YAML_TAG_DIRECTIVE_TOKEN ||
+ token->type == YAML_DOCUMENT_START_TOKEN ||
+ token->type == YAML_DOCUMENT_END_TOKEN ||
+ token->type == YAML_STREAM_END_TOKEN) {
+ parser->state = POP(parser, parser->states);
+ return yaml_parser_process_empty_scalar(parser, event,
+ token->start_mark);
+ }
+ else {
+ return yaml_parser_parse_node(parser, event, 1, 0);
+ }
+}
+
+/*
+ * Parse the productions:
+ * implicit_document ::= block_node DOCUMENT-END*
+ * *************
+ * explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
+ * *************
+ */
+
+static int
+yaml_parser_parse_document_end(yaml_parser_t *parser, yaml_event_t *event)
+{
+ yaml_token_t *token;
+ yaml_mark_t start_mark, end_mark;
+ int implicit = 1;
+
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+
+ start_mark = end_mark = token->start_mark;
+
+ if (token->type == YAML_DOCUMENT_END_TOKEN) {
+ end_mark = token->end_mark;
+ SKIP_TOKEN(parser);
+ implicit = 0;
+ }
+
+ while (!STACK_EMPTY(parser, parser->tag_directives)) {
+ yaml_tag_directive_t tag_directive = POP(parser, parser->tag_directives);
+ yaml_free(tag_directive.handle);
+ yaml_free(tag_directive.prefix);
+ }
+
+ parser->state = YAML_PARSE_DOCUMENT_START_STATE;
+ DOCUMENT_END_EVENT_INIT(*event, implicit, start_mark, end_mark);
+
+ return 1;
+}
+
+/*
+ * Parse the productions:
+ * block_node_or_indentless_sequence ::=
+ * ALIAS
+ * *****
+ * | properties (block_content | indentless_block_sequence)?
+ * ********** *
+ * | block_content | indentless_block_sequence
+ * *
+ * block_node ::= ALIAS
+ * *****
+ * | properties block_content?
+ * ********** *
+ * | block_content
+ * *
+ * flow_node ::= ALIAS
+ * *****
+ * | properties flow_content?
+ * ********** *
+ * | flow_content
+ * *
+ * properties ::= TAG ANCHOR? | ANCHOR TAG?
+ * *************************
+ * block_content ::= block_collection | flow_collection | SCALAR
+ * ******
+ * flow_content ::= flow_collection | SCALAR
+ * ******
+ */
+
+static int
+yaml_parser_parse_node(yaml_parser_t *parser, yaml_event_t *event,
+ int block, int indentless_sequence)
+{
+ yaml_token_t *token;
+ yaml_char_t *anchor = NULL;
+ yaml_char_t *tag_handle = NULL;
+ yaml_char_t *tag_suffix = NULL;
+ yaml_char_t *tag = NULL;
+ yaml_mark_t start_mark, end_mark, tag_mark;
+ int implicit;
+
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+
+ if (token->type == YAML_ALIAS_TOKEN)
+ {
+ parser->state = POP(parser, parser->states);
+ ALIAS_EVENT_INIT(*event, token->data.alias.value,
+ token->start_mark, token->end_mark);
+ SKIP_TOKEN(parser);
+ return 1;
+ }
+
+ else
+ {
+ start_mark = end_mark = token->start_mark;
+
+ if (token->type == YAML_ANCHOR_TOKEN)
+ {
+ anchor = token->data.anchor.value;
+ start_mark = token->start_mark;
+ end_mark = token->end_mark;
+ SKIP_TOKEN(parser);
+ token = PEEK_TOKEN(parser);
+ if (!token) goto error;
+ if (token->type == YAML_TAG_TOKEN)
+ {
+ tag_handle = token->data.tag.handle;
+ tag_suffix = token->data.tag.suffix;
+ tag_mark = token->start_mark;
+ end_mark = token->end_mark;
+ SKIP_TOKEN(parser);
+ token = PEEK_TOKEN(parser);
+ if (!token) goto error;
+ }
+ }
+ else if (token->type == YAML_TAG_TOKEN)
+ {
+ tag_handle = token->data.tag.handle;
+ tag_suffix = token->data.tag.suffix;
+ start_mark = tag_mark = token->start_mark;
+ end_mark = token->end_mark;
+ SKIP_TOKEN(parser);
+ token = PEEK_TOKEN(parser);
+ if (!token) goto error;
+ if (token->type == YAML_ANCHOR_TOKEN)
+ {
+ anchor = token->data.anchor.value;
+ end_mark = token->end_mark;
+ SKIP_TOKEN(parser);
+ token = PEEK_TOKEN(parser);
+ if (!token) goto error;
+ }
+ }
+
+ if (tag_handle) {
+ if (!*tag_handle) {
+ tag = tag_suffix;
+ yaml_free(tag_handle);
+ tag_handle = tag_suffix = NULL;
+ }
+ else {
+ yaml_tag_directive_t *tag_directive;
+ for (tag_directive = parser->tag_directives.start;
+ tag_directive != parser->tag_directives.top;
+ tag_directive ++) {
+ if (strcmp((char *)tag_directive->handle, (char *)tag_handle) == 0) {
+ size_t prefix_len = strlen((char *)tag_directive->prefix);
+ size_t suffix_len = strlen((char *)tag_suffix);
+ tag = yaml_malloc(prefix_len+suffix_len+1);
+ if (!tag) {
+ parser->error = YAML_MEMORY_ERROR;
+ goto error;
+ }
+ memcpy(tag, tag_directive->prefix, prefix_len);
+ memcpy(tag+prefix_len, tag_suffix, suffix_len);
+ tag[prefix_len+suffix_len] = '\0';
+ yaml_free(tag_handle);
+ yaml_free(tag_suffix);
+ tag_handle = tag_suffix = NULL;
+ break;
+ }
+ }
+ if (!tag) {
+ yaml_parser_set_parser_error_context(parser,
+ "while parsing a node", start_mark,
+ "found undefined tag handle", tag_mark);
+ goto error;
+ }
+ }
+ }
+
+ implicit = (!tag || !*tag);
+ if (indentless_sequence && token->type == YAML_BLOCK_ENTRY_TOKEN) {
+ end_mark = token->end_mark;
+ parser->state = YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE;
+ SEQUENCE_START_EVENT_INIT(*event, anchor, tag, implicit,
+ YAML_BLOCK_SEQUENCE_STYLE, start_mark, end_mark);
+ return 1;
+ }
+ else {
+ if (token->type == YAML_SCALAR_TOKEN) {
+ int plain_implicit = 0;
+ int quoted_implicit = 0;
+ end_mark = token->end_mark;
+ if ((token->data.scalar.style == YAML_PLAIN_SCALAR_STYLE && !tag)
+ || (tag && strcmp((char *)tag, "!") == 0)) {
+ plain_implicit = 1;
+ }
+ else if (!tag) {
+ quoted_implicit = 1;
+ }
+ parser->state = POP(parser, parser->states);
+ SCALAR_EVENT_INIT(*event, anchor, tag,
+ token->data.scalar.value, token->data.scalar.length,
+ plain_implicit, quoted_implicit,
+ token->data.scalar.style, start_mark, end_mark);
+ SKIP_TOKEN(parser);
+ return 1;
+ }
+ else if (token->type == YAML_FLOW_SEQUENCE_START_TOKEN) {
+ end_mark = token->end_mark;
+ parser->state = YAML_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE;
+ SEQUENCE_START_EVENT_INIT(*event, anchor, tag, implicit,
+ YAML_FLOW_SEQUENCE_STYLE, start_mark, end_mark);
+ return 1;
+ }
+ else if (token->type == YAML_FLOW_MAPPING_START_TOKEN) {
+ end_mark = token->end_mark;
+ parser->state = YAML_PARSE_FLOW_MAPPING_FIRST_KEY_STATE;
+ MAPPING_START_EVENT_INIT(*event, anchor, tag, implicit,
+ YAML_FLOW_MAPPING_STYLE, start_mark, end_mark);
+ return 1;
+ }
+ else if (block && token->type == YAML_BLOCK_SEQUENCE_START_TOKEN) {
+ end_mark = token->end_mark;
+ parser->state = YAML_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE;
+ SEQUENCE_START_EVENT_INIT(*event, anchor, tag, implicit,
+ YAML_BLOCK_SEQUENCE_STYLE, start_mark, end_mark);
+ return 1;
+ }
+ else if (block && token->type == YAML_BLOCK_MAPPING_START_TOKEN) {
+ end_mark = token->end_mark;
+ parser->state = YAML_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE;
+ MAPPING_START_EVENT_INIT(*event, anchor, tag, implicit,
+ YAML_BLOCK_MAPPING_STYLE, start_mark, end_mark);
+ return 1;
+ }
+ else if (anchor || tag) {
+ yaml_char_t *value = yaml_malloc(1);
+ if (!value) {
+ parser->error = YAML_MEMORY_ERROR;
+ goto error;
+ }
+ value[0] = '\0';
+ parser->state = POP(parser, parser->states);
+ SCALAR_EVENT_INIT(*event, anchor, tag, value, 0,
+ implicit, 0, YAML_PLAIN_SCALAR_STYLE,
+ start_mark, end_mark);
+ return 1;
+ }
+ else {
+ yaml_parser_set_parser_error_context(parser,
+ (block ? "while parsing a block node"
+ : "while parsing a flow node"), start_mark,
+ "did not find expected node content", token->start_mark);
+ goto error;
+ }
+ }
+ }
+
+error:
+ yaml_free(anchor);
+ yaml_free(tag_handle);
+ yaml_free(tag_suffix);
+ yaml_free(tag);
+
+ return 0;
+}
+
+/*
+ * Parse the productions:
+ * block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END
+ * ******************** *********** * *********
+ */
+
+static int
+yaml_parser_parse_block_sequence_entry(yaml_parser_t *parser,
+ yaml_event_t *event, int first)
+{
+ yaml_token_t *token;
+
+ if (first) {
+ token = PEEK_TOKEN(parser);
+ if (!PUSH(parser, parser->marks, token->start_mark))
+ return 0;
+ SKIP_TOKEN(parser);
+ }
+
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+
+ if (token->type == YAML_BLOCK_ENTRY_TOKEN)
+ {
+ yaml_mark_t mark = token->end_mark;
+ SKIP_TOKEN(parser);
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+ if (token->type != YAML_BLOCK_ENTRY_TOKEN &&
+ token->type != YAML_BLOCK_END_TOKEN) {
+ if (!PUSH(parser, parser->states,
+ YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE))
+ return 0;
+ return yaml_parser_parse_node(parser, event, 1, 0);
+ }
+ else {
+ parser->state = YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE;
+ return yaml_parser_process_empty_scalar(parser, event, mark);
+ }
+ }
+
+ else if (token->type == YAML_BLOCK_END_TOKEN)
+ {
+ parser->state = POP(parser, parser->states);
+ (void)POP(parser, parser->marks);
+ SEQUENCE_END_EVENT_INIT(*event, token->start_mark, token->end_mark);
+ SKIP_TOKEN(parser);
+ return 1;
+ }
+
+ else
+ {
+ return yaml_parser_set_parser_error_context(parser,
+ "while parsing a block collection", POP(parser, parser->marks),
+ "did not find expected '-' indicator", token->start_mark);
+ }
+}
+
+/*
+ * Parse the productions:
+ * indentless_sequence ::= (BLOCK-ENTRY block_node?)+
+ * *********** *
+ */
+
+static int
+yaml_parser_parse_indentless_sequence_entry(yaml_parser_t *parser,
+ yaml_event_t *event)
+{
+ yaml_token_t *token;
+
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+
+ if (token->type == YAML_BLOCK_ENTRY_TOKEN)
+ {
+ yaml_mark_t mark = token->end_mark;
+ SKIP_TOKEN(parser);
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+ if (token->type != YAML_BLOCK_ENTRY_TOKEN &&
+ token->type != YAML_KEY_TOKEN &&
+ token->type != YAML_VALUE_TOKEN &&
+ token->type != YAML_BLOCK_END_TOKEN) {
+ if (!PUSH(parser, parser->states,
+ YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE))
+ return 0;
+ return yaml_parser_parse_node(parser, event, 1, 0);
+ }
+ else {
+ parser->state = YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE;
+ return yaml_parser_process_empty_scalar(parser, event, mark);
+ }
+ }
+
+ else
+ {
+ parser->state = POP(parser, parser->states);
+ SEQUENCE_END_EVENT_INIT(*event, token->start_mark, token->start_mark);
+ return 1;
+ }
+}
+
+/*
+ * Parse the productions:
+ * block_mapping ::= BLOCK-MAPPING_START
+ * *******************
+ * ((KEY block_node_or_indentless_sequence?)?
+ * *** *
+ * (VALUE block_node_or_indentless_sequence?)?)*
+ *
+ * BLOCK-END
+ * *********
+ */
+
+static int
+yaml_parser_parse_block_mapping_key(yaml_parser_t *parser,
+ yaml_event_t *event, int first)
+{
+ yaml_token_t *token;
+
+ if (first) {
+ token = PEEK_TOKEN(parser);
+ if (!PUSH(parser, parser->marks, token->start_mark))
+ return 0;
+ SKIP_TOKEN(parser);
+ }
+
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+
+ if (token->type == YAML_KEY_TOKEN)
+ {
+ yaml_mark_t mark = token->end_mark;
+ SKIP_TOKEN(parser);
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+ if (token->type != YAML_KEY_TOKEN &&
+ token->type != YAML_VALUE_TOKEN &&
+ token->type != YAML_BLOCK_END_TOKEN) {
+ if (!PUSH(parser, parser->states,
+ YAML_PARSE_BLOCK_MAPPING_VALUE_STATE))
+ return 0;
+ return yaml_parser_parse_node(parser, event, 1, 1);
+ }
+ else {
+ parser->state = YAML_PARSE_BLOCK_MAPPING_VALUE_STATE;
+ return yaml_parser_process_empty_scalar(parser, event, mark);
+ }
+ }
+
+ else if (token->type == YAML_BLOCK_END_TOKEN)
+ {
+ parser->state = POP(parser, parser->states);
+ (void)POP(parser, parser->marks);
+ MAPPING_END_EVENT_INIT(*event, token->start_mark, token->end_mark);
+ SKIP_TOKEN(parser);
+ return 1;
+ }
+
+ else
+ {
+ return yaml_parser_set_parser_error_context(parser,
+ "while parsing a block mapping", POP(parser, parser->marks),
+ "did not find expected key", token->start_mark);
+ }
+}
+
+/*
+ * Parse the productions:
+ * block_mapping ::= BLOCK-MAPPING_START
+ *
+ * ((KEY block_node_or_indentless_sequence?)?
+ *
+ * (VALUE block_node_or_indentless_sequence?)?)*
+ * ***** *
+ * BLOCK-END
+ *
+ */
+
+static int
+yaml_parser_parse_block_mapping_value(yaml_parser_t *parser,
+ yaml_event_t *event)
+{
+ yaml_token_t *token;
+
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+
+ if (token->type == YAML_VALUE_TOKEN)
+ {
+ yaml_mark_t mark = token->end_mark;
+ SKIP_TOKEN(parser);
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+ if (token->type != YAML_KEY_TOKEN &&
+ token->type != YAML_VALUE_TOKEN &&
+ token->type != YAML_BLOCK_END_TOKEN) {
+ if (!PUSH(parser, parser->states,
+ YAML_PARSE_BLOCK_MAPPING_KEY_STATE))
+ return 0;
+ return yaml_parser_parse_node(parser, event, 1, 1);
+ }
+ else {
+ parser->state = YAML_PARSE_BLOCK_MAPPING_KEY_STATE;
+ return yaml_parser_process_empty_scalar(parser, event, mark);
+ }
+ }
+
+ else
+ {
+ parser->state = YAML_PARSE_BLOCK_MAPPING_KEY_STATE;
+ return yaml_parser_process_empty_scalar(parser, event, token->start_mark);
+ }
+}
+
+/*
+ * Parse the productions:
+ * flow_sequence ::= FLOW-SEQUENCE-START
+ * *******************
+ * (flow_sequence_entry FLOW-ENTRY)*
+ * * **********
+ * flow_sequence_entry?
+ * *
+ * FLOW-SEQUENCE-END
+ * *****************
+ * flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+ * *
+ */
+
+static int
+yaml_parser_parse_flow_sequence_entry(yaml_parser_t *parser,
+ yaml_event_t *event, int first)
+{
+ yaml_token_t *token;
+
+ if (first) {
+ token = PEEK_TOKEN(parser);
+ if (!PUSH(parser, parser->marks, token->start_mark))
+ return 0;
+ SKIP_TOKEN(parser);
+ }
+
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+
+ if (token->type != YAML_FLOW_SEQUENCE_END_TOKEN)
+ {
+ if (!first) {
+ if (token->type == YAML_FLOW_ENTRY_TOKEN) {
+ SKIP_TOKEN(parser);
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+ }
+ else {
+ return yaml_parser_set_parser_error_context(parser,
+ "while parsing a flow sequence", POP(parser, parser->marks),
+ "did not find expected ',' or ']'", token->start_mark);
+ }
+ }
+
+ if (token->type == YAML_KEY_TOKEN) {
+ parser->state = YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE;
+ MAPPING_START_EVENT_INIT(*event, NULL, NULL,
+ 1, YAML_FLOW_MAPPING_STYLE,
+ token->start_mark, token->end_mark);
+ SKIP_TOKEN(parser);
+ return 1;
+ }
+
+ else if (token->type != YAML_FLOW_SEQUENCE_END_TOKEN) {
+ if (!PUSH(parser, parser->states,
+ YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE))
+ return 0;
+ return yaml_parser_parse_node(parser, event, 0, 0);
+ }
+ }
+
+ parser->state = POP(parser, parser->states);
+ (void)POP(parser, parser->marks);
+ SEQUENCE_END_EVENT_INIT(*event, token->start_mark, token->end_mark);
+ SKIP_TOKEN(parser);
+ return 1;
+}
+
+/*
+ * Parse the productions:
+ * flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+ * *** *
+ */
+
+static int
+yaml_parser_parse_flow_sequence_entry_mapping_key(yaml_parser_t *parser,
+ yaml_event_t *event)
+{
+ yaml_token_t *token;
+
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+
+ if (token->type != YAML_VALUE_TOKEN && token->type != YAML_FLOW_ENTRY_TOKEN
+ && token->type != YAML_FLOW_SEQUENCE_END_TOKEN) {
+ if (!PUSH(parser, parser->states,
+ YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE))
+ return 0;
+ return yaml_parser_parse_node(parser, event, 0, 0);
+ }
+ else {
+ yaml_mark_t mark = token->end_mark;
+ SKIP_TOKEN(parser);
+ parser->state = YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE;
+ return yaml_parser_process_empty_scalar(parser, event, mark);
+ }
+}
+
+/*
+ * Parse the productions:
+ * flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+ * ***** *
+ */
+
+static int
+yaml_parser_parse_flow_sequence_entry_mapping_value(yaml_parser_t *parser,
+ yaml_event_t *event)
+{
+ yaml_token_t *token;
+
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+
+ if (token->type == YAML_VALUE_TOKEN) {
+ SKIP_TOKEN(parser);
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+ if (token->type != YAML_FLOW_ENTRY_TOKEN
+ && token->type != YAML_FLOW_SEQUENCE_END_TOKEN) {
+ if (!PUSH(parser, parser->states,
+ YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE))
+ return 0;
+ return yaml_parser_parse_node(parser, event, 0, 0);
+ }
+ }
+ parser->state = YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE;
+ return yaml_parser_process_empty_scalar(parser, event, token->start_mark);
+}
+
+/*
+ * Parse the productions:
+ * flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+ * *
+ */
+
+static int
+yaml_parser_parse_flow_sequence_entry_mapping_end(yaml_parser_t *parser,
+ yaml_event_t *event)
+{
+ yaml_token_t *token;
+
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+
+ parser->state = YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE;
+
+ MAPPING_END_EVENT_INIT(*event, token->start_mark, token->start_mark);
+ return 1;
+}
+
+/*
+ * Parse the productions:
+ * flow_mapping ::= FLOW-MAPPING-START
+ * ******************
+ * (flow_mapping_entry FLOW-ENTRY)*
+ * * **********
+ * flow_mapping_entry?
+ * ******************
+ * FLOW-MAPPING-END
+ * ****************
+ * flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+ * * *** *
+ */
+
+static int
+yaml_parser_parse_flow_mapping_key(yaml_parser_t *parser,
+ yaml_event_t *event, int first)
+{
+ yaml_token_t *token;
+
+ if (first) {
+ token = PEEK_TOKEN(parser);
+ if (!PUSH(parser, parser->marks, token->start_mark))
+ return 0;
+ SKIP_TOKEN(parser);
+ }
+
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+
+ if (token->type != YAML_FLOW_MAPPING_END_TOKEN)
+ {
+ if (!first) {
+ if (token->type == YAML_FLOW_ENTRY_TOKEN) {
+ SKIP_TOKEN(parser);
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+ }
+ else {
+ return yaml_parser_set_parser_error_context(parser,
+ "while parsing a flow mapping", POP(parser, parser->marks),
+ "did not find expected ',' or '}'", token->start_mark);
+ }
+ }
+
+ if (token->type == YAML_KEY_TOKEN) {
+ SKIP_TOKEN(parser);
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+ if (token->type != YAML_VALUE_TOKEN
+ && token->type != YAML_FLOW_ENTRY_TOKEN
+ && token->type != YAML_FLOW_MAPPING_END_TOKEN) {
+ if (!PUSH(parser, parser->states,
+ YAML_PARSE_FLOW_MAPPING_VALUE_STATE))
+ return 0;
+ return yaml_parser_parse_node(parser, event, 0, 0);
+ }
+ else {
+ parser->state = YAML_PARSE_FLOW_MAPPING_VALUE_STATE;
+ return yaml_parser_process_empty_scalar(parser, event,
+ token->start_mark);
+ }
+ }
+ else if (token->type != YAML_FLOW_MAPPING_END_TOKEN) {
+ if (!PUSH(parser, parser->states,
+ YAML_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE))
+ return 0;
+ return yaml_parser_parse_node(parser, event, 0, 0);
+ }
+ }
+
+ parser->state = POP(parser, parser->states);
+ (void)POP(parser, parser->marks);
+ MAPPING_END_EVENT_INIT(*event, token->start_mark, token->end_mark);
+ SKIP_TOKEN(parser);
+ return 1;
+}
+
+/*
+ * Parse the productions:
+ * flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+ * * ***** *
+ */
+
+static int
+yaml_parser_parse_flow_mapping_value(yaml_parser_t *parser,
+ yaml_event_t *event, int empty)
+{
+ yaml_token_t *token;
+
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+
+ if (empty) {
+ parser->state = YAML_PARSE_FLOW_MAPPING_KEY_STATE;
+ return yaml_parser_process_empty_scalar(parser, event,
+ token->start_mark);
+ }
+
+ if (token->type == YAML_VALUE_TOKEN) {
+ SKIP_TOKEN(parser);
+ token = PEEK_TOKEN(parser);
+ if (!token) return 0;
+ if (token->type != YAML_FLOW_ENTRY_TOKEN
+ && token->type != YAML_FLOW_MAPPING_END_TOKEN) {
+ if (!PUSH(parser, parser->states,
+ YAML_PARSE_FLOW_MAPPING_KEY_STATE))
+ return 0;
+ return yaml_parser_parse_node(parser, event, 0, 0);
+ }
+ }
+
+ parser->state = YAML_PARSE_FLOW_MAPPING_KEY_STATE;
+ return yaml_parser_process_empty_scalar(parser, event, token->start_mark);
+}
+
+/*
+ * Generate an empty scalar event.
+ */
+
+static int
+yaml_parser_process_empty_scalar(yaml_parser_t *parser, yaml_event_t *event,
+ yaml_mark_t mark)
+{
+ yaml_char_t *value;
+
+ value = yaml_malloc(1);
+ if (!value) {
+ parser->error = YAML_MEMORY_ERROR;
+ return 0;
+ }
+ value[0] = '\0';
+
+ SCALAR_EVENT_INIT(*event, NULL, NULL, value, 0,
+ 1, 0, YAML_PLAIN_SCALAR_STYLE, mark, mark);
+
+ return 1;
+}
+
+/*
+ * Parse directives.
+ */
+
+static int
+yaml_parser_process_directives(yaml_parser_t *parser,
+ yaml_version_directive_t **version_directive_ref,
+ yaml_tag_directive_t **tag_directives_start_ref,
+ yaml_tag_directive_t **tag_directives_end_ref)
+{
+ yaml_tag_directive_t default_tag_directives[] = {
+ {(yaml_char_t *)"!", (yaml_char_t *)"!"},
+ {(yaml_char_t *)"!!", (yaml_char_t *)"tag:yaml.org,2002:"},
+ {NULL, NULL}
+ };
+ yaml_tag_directive_t *default_tag_directive;
+ yaml_version_directive_t *version_directive = NULL;
+ struct {
+ yaml_tag_directive_t *start;
+ yaml_tag_directive_t *end;
+ yaml_tag_directive_t *top;
+ } tag_directives = { NULL, NULL, NULL };
+ yaml_token_t *token;
+
+ if (!STACK_INIT(parser, tag_directives, INITIAL_STACK_SIZE))
+ goto error;
+
+ token = PEEK_TOKEN(parser);
+ if (!token) goto error;
+
+ while (token->type == YAML_VERSION_DIRECTIVE_TOKEN ||
+ token->type == YAML_TAG_DIRECTIVE_TOKEN)
+ {
+ if (token->type == YAML_VERSION_DIRECTIVE_TOKEN) {
+ if (version_directive) {
+ yaml_parser_set_parser_error(parser,
+ "found duplicate %YAML directive", token->start_mark);
+ goto error;
+ }
+ if (token->data.version_directive.major != 1
+ || token->data.version_directive.minor != 1) {
+ yaml_parser_set_parser_error(parser,
+ "found incompatible YAML document", token->start_mark);
+ goto error;
+ }
+ version_directive = yaml_malloc(sizeof(yaml_version_directive_t));
+ if (!version_directive) {
+ parser->error = YAML_MEMORY_ERROR;
+ goto error;
+ }
+ version_directive->major = token->data.version_directive.major;
+ version_directive->minor = token->data.version_directive.minor;
+ }
+
+ else if (token->type == YAML_TAG_DIRECTIVE_TOKEN) {
+ yaml_tag_directive_t value;
+ value.handle = token->data.tag_directive.handle;
+ value.prefix = token->data.tag_directive.prefix;
+
+ if (!yaml_parser_append_tag_directive(parser, value, 0,
+ token->start_mark))
+ goto error;
+ if (!PUSH(parser, tag_directives, value))
+ goto error;
+ }
+
+ SKIP_TOKEN(parser);
+ token = PEEK_TOKEN(parser);
+ if (!token) goto error;
+ }
+
+ for (default_tag_directive = default_tag_directives;
+ default_tag_directive->handle; default_tag_directive++) {
+ if (!yaml_parser_append_tag_directive(parser, *default_tag_directive, 1,
+ token->start_mark))
+ goto error;
+ }
+
+ if (version_directive_ref) {
+ *version_directive_ref = version_directive;
+ }
+ if (tag_directives_start_ref) {
+ if (STACK_EMPTY(parser, tag_directives)) {
+ *tag_directives_start_ref = *tag_directives_end_ref = NULL;
+ STACK_DEL(parser, tag_directives);
+ }
+ else {
+ *tag_directives_start_ref = tag_directives.start;
+ *tag_directives_end_ref = tag_directives.top;
+ }
+ }
+ else {
+ STACK_DEL(parser, tag_directives);
+ }
+
+ return 1;
+
+error:
+ yaml_free(version_directive);
+ while (!STACK_EMPTY(parser, tag_directives)) {
+ yaml_tag_directive_t tag_directive = POP(parser, tag_directives);
+ yaml_free(tag_directive.handle);
+ yaml_free(tag_directive.prefix);
+ }
+ STACK_DEL(parser, tag_directives);
+ return 0;
+}
+
+/*
+ * Append a tag directive to the directives stack.
+ */
+
+static int
+yaml_parser_append_tag_directive(yaml_parser_t *parser,
+ yaml_tag_directive_t value, int allow_duplicates, yaml_mark_t mark)
+{
+ yaml_tag_directive_t *tag_directive;
+ yaml_tag_directive_t copy = { NULL, NULL };
+
+ for (tag_directive = parser->tag_directives.start;
+ tag_directive != parser->tag_directives.top; tag_directive ++) {
+ if (strcmp((char *)value.handle, (char *)tag_directive->handle) == 0) {
+ if (allow_duplicates)
+ return 1;
+ return yaml_parser_set_parser_error(parser,
+ "found duplicate %TAG directive", mark);
+ }
+ }
+
+ copy.handle = yaml_strdup(value.handle);
+ copy.prefix = yaml_strdup(value.prefix);
+ if (!copy.handle || !copy.prefix) {
+ parser->error = YAML_MEMORY_ERROR;
+ goto error;
+ }
+
+ if (!PUSH(parser, parser->tag_directives, copy))
+ goto error;
+
+ return 1;
+
+error:
+ yaml_free(copy.handle);
+ yaml_free(copy.prefix);
+ return 0;
+}
+
diff --git a/jni/ruby/ext/psych/yaml/reader.c b/jni/ruby/ext/psych/yaml/reader.c
new file mode 100644
index 0000000..f1a06de
--- /dev/null
+++ b/jni/ruby/ext/psych/yaml/reader.c
@@ -0,0 +1,469 @@
+
+#include "yaml_private.h"
+
+/*
+ * Declarations.
+ */
+
+static int
+yaml_parser_set_reader_error(yaml_parser_t *parser, const char *problem,
+ size_t offset, int value);
+
+static int
+yaml_parser_update_raw_buffer(yaml_parser_t *parser);
+
+static int
+yaml_parser_determine_encoding(yaml_parser_t *parser);
+
+YAML_DECLARE(int)
+yaml_parser_update_buffer(yaml_parser_t *parser, size_t length);
+
+/*
+ * Set the reader error and return 0.
+ */
+
+static int
+yaml_parser_set_reader_error(yaml_parser_t *parser, const char *problem,
+ size_t offset, int value)
+{
+ parser->error = YAML_READER_ERROR;
+ parser->problem = problem;
+ parser->problem_offset = offset;
+ parser->problem_value = value;
+
+ return 0;
+}
+
+/*
+ * Byte order marks.
+ */
+
+#define BOM_UTF8 "\xef\xbb\xbf"
+#define BOM_UTF16LE "\xff\xfe"
+#define BOM_UTF16BE "\xfe\xff"
+
+/*
+ * Determine the input stream encoding by checking the BOM symbol. If no BOM is
+ * found, the UTF-8 encoding is assumed. Return 1 on success, 0 on failure.
+ */
+
+static int
+yaml_parser_determine_encoding(yaml_parser_t *parser)
+{
+ /* Ensure that we had enough bytes in the raw buffer. */
+
+ while (!parser->eof
+ && parser->raw_buffer.last - parser->raw_buffer.pointer < 3) {
+ if (!yaml_parser_update_raw_buffer(parser)) {
+ return 0;
+ }
+ }
+
+ /* Determine the encoding. */
+
+ if (parser->raw_buffer.last - parser->raw_buffer.pointer >= 2
+ && !memcmp(parser->raw_buffer.pointer, BOM_UTF16LE, 2)) {
+ parser->encoding = YAML_UTF16LE_ENCODING;
+ parser->raw_buffer.pointer += 2;
+ parser->offset += 2;
+ }
+ else if (parser->raw_buffer.last - parser->raw_buffer.pointer >= 2
+ && !memcmp(parser->raw_buffer.pointer, BOM_UTF16BE, 2)) {
+ parser->encoding = YAML_UTF16BE_ENCODING;
+ parser->raw_buffer.pointer += 2;
+ parser->offset += 2;
+ }
+ else if (parser->raw_buffer.last - parser->raw_buffer.pointer >= 3
+ && !memcmp(parser->raw_buffer.pointer, BOM_UTF8, 3)) {
+ parser->encoding = YAML_UTF8_ENCODING;
+ parser->raw_buffer.pointer += 3;
+ parser->offset += 3;
+ }
+ else {
+ parser->encoding = YAML_UTF8_ENCODING;
+ }
+
+ return 1;
+}
+
+/*
+ * Update the raw buffer.
+ */
+
+static int
+yaml_parser_update_raw_buffer(yaml_parser_t *parser)
+{
+ size_t size_read = 0;
+
+ /* Return if the raw buffer is full. */
+
+ if (parser->raw_buffer.start == parser->raw_buffer.pointer
+ && parser->raw_buffer.last == parser->raw_buffer.end)
+ return 1;
+
+ /* Return on EOF. */
+
+ if (parser->eof) return 1;
+
+ /* Move the remaining bytes in the raw buffer to the beginning. */
+
+ if (parser->raw_buffer.start < parser->raw_buffer.pointer
+ && parser->raw_buffer.pointer < parser->raw_buffer.last) {
+ memmove(parser->raw_buffer.start, parser->raw_buffer.pointer,
+ parser->raw_buffer.last - parser->raw_buffer.pointer);
+ }
+ parser->raw_buffer.last -=
+ parser->raw_buffer.pointer - parser->raw_buffer.start;
+ parser->raw_buffer.pointer = parser->raw_buffer.start;
+
+ /* Call the read handler to fill the buffer. */
+
+ if (!parser->read_handler(parser->read_handler_data, parser->raw_buffer.last,
+ parser->raw_buffer.end - parser->raw_buffer.last, &size_read)) {
+ return yaml_parser_set_reader_error(parser, "input error",
+ parser->offset, -1);
+ }
+ parser->raw_buffer.last += size_read;
+ if (!size_read) {
+ parser->eof = 1;
+ }
+
+ return 1;
+}
+
+/*
+ * Ensure that the buffer contains at least `length` characters.
+ * Return 1 on success, 0 on failure.
+ *
+ * The length is supposed to be significantly less that the buffer size.
+ */
+
+YAML_DECLARE(int)
+yaml_parser_update_buffer(yaml_parser_t *parser, size_t length)
+{
+ int first = 1;
+
+ assert(parser->read_handler); /* Read handler must be set. */
+
+ /* If the EOF flag is set and the raw buffer is empty, do nothing. */
+
+ if (parser->eof && parser->raw_buffer.pointer == parser->raw_buffer.last)
+ return 1;
+
+ /* Return if the buffer contains enough characters. */
+
+ if (parser->unread >= length)
+ return 1;
+
+ /* Determine the input encoding if it is not known yet. */
+
+ if (!parser->encoding) {
+ if (!yaml_parser_determine_encoding(parser))
+ return 0;
+ }
+
+ /* Move the unread characters to the beginning of the buffer. */
+
+ if (parser->buffer.start < parser->buffer.pointer
+ && parser->buffer.pointer < parser->buffer.last) {
+ size_t size = parser->buffer.last - parser->buffer.pointer;
+ memmove(parser->buffer.start, parser->buffer.pointer, size);
+ parser->buffer.pointer = parser->buffer.start;
+ parser->buffer.last = parser->buffer.start + size;
+ }
+ else if (parser->buffer.pointer == parser->buffer.last) {
+ parser->buffer.pointer = parser->buffer.start;
+ parser->buffer.last = parser->buffer.start;
+ }
+
+ /* Fill the buffer until it has enough characters. */
+
+ while (parser->unread < length)
+ {
+ /* Fill the raw buffer if necessary. */
+
+ if (!first || parser->raw_buffer.pointer == parser->raw_buffer.last) {
+ if (!yaml_parser_update_raw_buffer(parser)) return 0;
+ }
+ first = 0;
+
+ /* Decode the raw buffer. */
+
+ while (parser->raw_buffer.pointer != parser->raw_buffer.last)
+ {
+ unsigned int value = 0, value2 = 0;
+ int incomplete = 0;
+ unsigned char octet;
+ unsigned int width = 0;
+ int low, high;
+ size_t k;
+ size_t raw_unread = parser->raw_buffer.last - parser->raw_buffer.pointer;
+
+ /* Decode the next character. */
+
+ switch (parser->encoding)
+ {
+ case YAML_UTF8_ENCODING:
+
+ /*
+ * Decode a UTF-8 character. Check RFC 3629
+ * (http://www.ietf.org/rfc/rfc3629.txt) for more details.
+ *
+ * The following table (taken from the RFC) is used for
+ * decoding.
+ *
+ * Char. number range | UTF-8 octet sequence
+ * (hexadecimal) | (binary)
+ * --------------------+------------------------------------
+ * 0000 0000-0000 007F | 0xxxxxxx
+ * 0000 0080-0000 07FF | 110xxxxx 10xxxxxx
+ * 0000 0800-0000 FFFF | 1110xxxx 10xxxxxx 10xxxxxx
+ * 0001 0000-0010 FFFF | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+ *
+ * Additionally, the characters in the range 0xD800-0xDFFF
+ * are prohibited as they are reserved for use with UTF-16
+ * surrogate pairs.
+ */
+
+ /* Determine the length of the UTF-8 sequence. */
+
+ octet = parser->raw_buffer.pointer[0];
+ width = (octet & 0x80) == 0x00 ? 1 :
+ (octet & 0xE0) == 0xC0 ? 2 :
+ (octet & 0xF0) == 0xE0 ? 3 :
+ (octet & 0xF8) == 0xF0 ? 4 : 0;
+
+ /* Check if the leading octet is valid. */
+
+ if (!width)
+ return yaml_parser_set_reader_error(parser,
+ "invalid leading UTF-8 octet",
+ parser->offset, octet);
+
+ /* Check if the raw buffer contains an incomplete character. */
+
+ if (width > raw_unread) {
+ if (parser->eof) {
+ return yaml_parser_set_reader_error(parser,
+ "incomplete UTF-8 octet sequence",
+ parser->offset, -1);
+ }
+ incomplete = 1;
+ break;
+ }
+
+ /* Decode the leading octet. */
+
+ value = (octet & 0x80) == 0x00 ? octet & 0x7F :
+ (octet & 0xE0) == 0xC0 ? octet & 0x1F :
+ (octet & 0xF0) == 0xE0 ? octet & 0x0F :
+ (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;
+
+ /* Check and decode the trailing octets. */
+
+ for (k = 1; k < width; k ++)
+ {
+ octet = parser->raw_buffer.pointer[k];
+
+ /* Check if the octet is valid. */
+
+ if ((octet & 0xC0) != 0x80)
+ return yaml_parser_set_reader_error(parser,
+ "invalid trailing UTF-8 octet",
+ parser->offset+k, octet);
+
+ /* Decode the octet. */
+
+ value = (value << 6) + (octet & 0x3F);
+ }
+
+ /* Check the length of the sequence against the value. */
+
+ if (!((width == 1) ||
+ (width == 2 && value >= 0x80) ||
+ (width == 3 && value >= 0x800) ||
+ (width == 4 && value >= 0x10000)))
+ return yaml_parser_set_reader_error(parser,
+ "invalid length of a UTF-8 sequence",
+ parser->offset, -1);
+
+ /* Check the range of the value. */
+
+ if ((value >= 0xD800 && value <= 0xDFFF) || value > 0x10FFFF)
+ return yaml_parser_set_reader_error(parser,
+ "invalid Unicode character",
+ parser->offset, value);
+
+ break;
+
+ case YAML_UTF16LE_ENCODING:
+ case YAML_UTF16BE_ENCODING:
+
+ low = (parser->encoding == YAML_UTF16LE_ENCODING ? 0 : 1);
+ high = (parser->encoding == YAML_UTF16LE_ENCODING ? 1 : 0);
+
+ /*
+ * The UTF-16 encoding is not as simple as one might
+ * naively think. Check RFC 2781
+ * (http://www.ietf.org/rfc/rfc2781.txt).
+ *
+ * Normally, two subsequent bytes describe a Unicode
+ * character. However a special technique (called a
+ * surrogate pair) is used for specifying character
+ * values larger than 0xFFFF.
+ *
+ * A surrogate pair consists of two pseudo-characters:
+ * high surrogate area (0xD800-0xDBFF)
+ * low surrogate area (0xDC00-0xDFFF)
+ *
+ * The following formulas are used for decoding
+ * and encoding characters using surrogate pairs:
+ *
+ * U = U' + 0x10000 (0x01 00 00 <= U <= 0x10 FF FF)
+ * U' = yyyyyyyyyyxxxxxxxxxx (0 <= U' <= 0x0F FF FF)
+ * W1 = 110110yyyyyyyyyy
+ * W2 = 110111xxxxxxxxxx
+ *
+ * where U is the character value, W1 is the high surrogate
+ * area, W2 is the low surrogate area.
+ */
+
+ /* Check for incomplete UTF-16 character. */
+
+ if (raw_unread < 2) {
+ if (parser->eof) {
+ return yaml_parser_set_reader_error(parser,
+ "incomplete UTF-16 character",
+ parser->offset, -1);
+ }
+ incomplete = 1;
+ break;
+ }
+
+ /* Get the character. */
+
+ value = parser->raw_buffer.pointer[low]
+ + (parser->raw_buffer.pointer[high] << 8);
+
+ /* Check for unexpected low surrogate area. */
+
+ if ((value & 0xFC00) == 0xDC00)
+ return yaml_parser_set_reader_error(parser,
+ "unexpected low surrogate area",
+ parser->offset, value);
+
+ /* Check for a high surrogate area. */
+
+ if ((value & 0xFC00) == 0xD800) {
+
+ width = 4;
+
+ /* Check for incomplete surrogate pair. */
+
+ if (raw_unread < 4) {
+ if (parser->eof) {
+ return yaml_parser_set_reader_error(parser,
+ "incomplete UTF-16 surrogate pair",
+ parser->offset, -1);
+ }
+ incomplete = 1;
+ break;
+ }
+
+ /* Get the next character. */
+
+ value2 = parser->raw_buffer.pointer[low+2]
+ + (parser->raw_buffer.pointer[high+2] << 8);
+
+ /* Check for a low surrogate area. */
+
+ if ((value2 & 0xFC00) != 0xDC00)
+ return yaml_parser_set_reader_error(parser,
+ "expected low surrogate area",
+ parser->offset+2, value2);
+
+ /* Generate the value of the surrogate pair. */
+
+ value = 0x10000 + ((value & 0x3FF) << 10) + (value2 & 0x3FF);
+ }
+
+ else {
+ width = 2;
+ }
+
+ break;
+
+ default:
+ assert(1); /* Impossible. */
+ }
+
+ /* Check if the raw buffer contains enough bytes to form a character. */
+
+ if (incomplete) break;
+
+ /*
+ * Check if the character is in the allowed range:
+ * #x9 | #xA | #xD | [#x20-#x7E] (8 bit)
+ * | #x85 | [#xA0-#xD7FF] | [#xE000-#xFFFD] (16 bit)
+ * | [#x10000-#x10FFFF] (32 bit)
+ */
+
+ if (! (value == 0x09 || value == 0x0A || value == 0x0D
+ || (value >= 0x20 && value <= 0x7E)
+ || (value == 0x85) || (value >= 0xA0 && value <= 0xD7FF)
+ || (value >= 0xE000 && value <= 0xFFFD)
+ || (value >= 0x10000 && value <= 0x10FFFF)))
+ return yaml_parser_set_reader_error(parser,
+ "control characters are not allowed",
+ parser->offset, value);
+
+ /* Move the raw pointers. */
+
+ parser->raw_buffer.pointer += width;
+ parser->offset += width;
+
+ /* Finally put the character into the buffer. */
+
+ /* 0000 0000-0000 007F -> 0xxxxxxx */
+ if (value <= 0x7F) {
+ *(parser->buffer.last++) = value;
+ }
+ /* 0000 0080-0000 07FF -> 110xxxxx 10xxxxxx */
+ else if (value <= 0x7FF) {
+ *(parser->buffer.last++) = 0xC0 + (value >> 6);
+ *(parser->buffer.last++) = 0x80 + (value & 0x3F);
+ }
+ /* 0000 0800-0000 FFFF -> 1110xxxx 10xxxxxx 10xxxxxx */
+ else if (value <= 0xFFFF) {
+ *(parser->buffer.last++) = 0xE0 + (value >> 12);
+ *(parser->buffer.last++) = 0x80 + ((value >> 6) & 0x3F);
+ *(parser->buffer.last++) = 0x80 + (value & 0x3F);
+ }
+ /* 0001 0000-0010 FFFF -> 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx */
+ else {
+ *(parser->buffer.last++) = 0xF0 + (value >> 18);
+ *(parser->buffer.last++) = 0x80 + ((value >> 12) & 0x3F);
+ *(parser->buffer.last++) = 0x80 + ((value >> 6) & 0x3F);
+ *(parser->buffer.last++) = 0x80 + (value & 0x3F);
+ }
+
+ parser->unread ++;
+ }
+
+ /* On EOF, put NUL into the buffer and return. */
+
+ if (parser->eof) {
+ *(parser->buffer.last++) = '\0';
+ parser->unread ++;
+ return 1;
+ }
+
+ }
+
+ if (parser->offset >= PTRDIFF_MAX)
+ return yaml_parser_set_reader_error(parser, "input is too long",
+ PTRDIFF_MAX, -1);
+
+ return 1;
+}
+
diff --git a/jni/ruby/ext/psych/yaml/scanner.c b/jni/ruby/ext/psych/yaml/scanner.c
new file mode 100644
index 0000000..08ad8ed
--- /dev/null
+++ b/jni/ruby/ext/psych/yaml/scanner.c
@@ -0,0 +1,3583 @@
+
+/*
+ * Introduction
+ * ************
+ *
+ * The following notes assume that you are familiar with the YAML specification
+ * (http://yaml.org/spec/cvs/current.html). We mostly follow it, although in
+ * some cases we are less restrictive that it requires.
+ *
+ * The process of transforming a YAML stream into a sequence of events is
+ * divided on two steps: Scanning and Parsing.
+ *
+ * The Scanner transforms the input stream into a sequence of tokens, while the
+ * parser transform the sequence of tokens produced by the Scanner into a
+ * sequence of parsing events.
+ *
+ * The Scanner is rather clever and complicated. The Parser, on the contrary,
+ * is a straightforward implementation of a recursive-descendant parser (or,
+ * LL(1) parser, as it is usually called).
+ *
+ * Actually there are two issues of Scanning that might be called "clever", the
+ * rest is quite straightforward. The issues are "block collection start" and
+ * "simple keys". Both issues are explained below in details.
+ *
+ * Here the Scanning step is explained and implemented. We start with the list
+ * of all the tokens produced by the Scanner together with short descriptions.
+ *
+ * Now, tokens:
+ *
+ * STREAM-START(encoding) # The stream start.
+ * STREAM-END # The stream end.
+ * VERSION-DIRECTIVE(major,minor) # The '%YAML' directive.
+ * TAG-DIRECTIVE(handle,prefix) # The '%TAG' directive.
+ * DOCUMENT-START # '---'
+ * DOCUMENT-END # '...'
+ * BLOCK-SEQUENCE-START # Indentation increase denoting a block
+ * BLOCK-MAPPING-START # sequence or a block mapping.
+ * BLOCK-END # Indentation decrease.
+ * FLOW-SEQUENCE-START # '['
+ * FLOW-SEQUENCE-END # ']'
+ * BLOCK-SEQUENCE-START # '{'
+ * BLOCK-SEQUENCE-END # '}'
+ * BLOCK-ENTRY # '-'
+ * FLOW-ENTRY # ','
+ * KEY # '?' or nothing (simple keys).
+ * VALUE # ':'
+ * ALIAS(anchor) # '*anchor'
+ * ANCHOR(anchor) # '&anchor'
+ * TAG(handle,suffix) # '!handle!suffix'
+ * SCALAR(value,style) # A scalar.
+ *
+ * The following two tokens are "virtual" tokens denoting the beginning and the
+ * end of the stream:
+ *
+ * STREAM-START(encoding)
+ * STREAM-END
+ *
+ * We pass the information about the input stream encoding with the
+ * STREAM-START token.
+ *
+ * The next two tokens are responsible for tags:
+ *
+ * VERSION-DIRECTIVE(major,minor)
+ * TAG-DIRECTIVE(handle,prefix)
+ *
+ * Example:
+ *
+ * %YAML 1.1
+ * %TAG ! !foo
+ * %TAG !yaml! tag:yaml.org,2002:
+ * ---
+ *
+ * The corresponding sequence of tokens:
+ *
+ * STREAM-START(utf-8)
+ * VERSION-DIRECTIVE(1,1)
+ * TAG-DIRECTIVE("!","!foo")
+ * TAG-DIRECTIVE("!yaml","tag:yaml.org,2002:")
+ * DOCUMENT-START
+ * STREAM-END
+ *
+ * Note that the VERSION-DIRECTIVE and TAG-DIRECTIVE tokens occupy a whole
+ * line.
+ *
+ * The document start and end indicators are represented by:
+ *
+ * DOCUMENT-START
+ * DOCUMENT-END
+ *
+ * Note that if a YAML stream contains an implicit document (without '---'
+ * and '...' indicators), no DOCUMENT-START and DOCUMENT-END tokens will be
+ * produced.
+ *
+ * In the following examples, we present whole documents together with the
+ * produced tokens.
+ *
+ * 1. An implicit document:
+ *
+ * 'a scalar'
+ *
+ * Tokens:
+ *
+ * STREAM-START(utf-8)
+ * SCALAR("a scalar",single-quoted)
+ * STREAM-END
+ *
+ * 2. An explicit document:
+ *
+ * ---
+ * 'a scalar'
+ * ...
+ *
+ * Tokens:
+ *
+ * STREAM-START(utf-8)
+ * DOCUMENT-START
+ * SCALAR("a scalar",single-quoted)
+ * DOCUMENT-END
+ * STREAM-END
+ *
+ * 3. Several documents in a stream:
+ *
+ * 'a scalar'
+ * ---
+ * 'another scalar'
+ * ---
+ * 'yet another scalar'
+ *
+ * Tokens:
+ *
+ * STREAM-START(utf-8)
+ * SCALAR("a scalar",single-quoted)
+ * DOCUMENT-START
+ * SCALAR("another scalar",single-quoted)
+ * DOCUMENT-START
+ * SCALAR("yet another scalar",single-quoted)
+ * STREAM-END
+ *
+ * We have already introduced the SCALAR token above. The following tokens are
+ * used to describe aliases, anchors, tag, and scalars:
+ *
+ * ALIAS(anchor)
+ * ANCHOR(anchor)
+ * TAG(handle,suffix)
+ * SCALAR(value,style)
+ *
+ * The following series of examples illustrate the usage of these tokens:
+ *
+ * 1. A recursive sequence:
+ *
+ * &A [ *A ]
+ *
+ * Tokens:
+ *
+ * STREAM-START(utf-8)
+ * ANCHOR("A")
+ * FLOW-SEQUENCE-START
+ * ALIAS("A")
+ * FLOW-SEQUENCE-END
+ * STREAM-END
+ *
+ * 2. A tagged scalar:
+ *
+ * !!float "3.14" # A good approximation.
+ *
+ * Tokens:
+ *
+ * STREAM-START(utf-8)
+ * TAG("!!","float")
+ * SCALAR("3.14",double-quoted)
+ * STREAM-END
+ *
+ * 3. Various scalar styles:
+ *
+ * --- # Implicit empty plain scalars do not produce tokens.
+ * --- a plain scalar
+ * --- 'a single-quoted scalar'
+ * --- "a double-quoted scalar"
+ * --- |-
+ * a literal scalar
+ * --- >-
+ * a folded
+ * scalar
+ *
+ * Tokens:
+ *
+ * STREAM-START(utf-8)
+ * DOCUMENT-START
+ * DOCUMENT-START
+ * SCALAR("a plain scalar",plain)
+ * DOCUMENT-START
+ * SCALAR("a single-quoted scalar",single-quoted)
+ * DOCUMENT-START
+ * SCALAR("a double-quoted scalar",double-quoted)
+ * DOCUMENT-START
+ * SCALAR("a literal scalar",literal)
+ * DOCUMENT-START
+ * SCALAR("a folded scalar",folded)
+ * STREAM-END
+ *
+ * Now it's time to review collection-related tokens. We will start with
+ * flow collections:
+ *
+ * FLOW-SEQUENCE-START
+ * FLOW-SEQUENCE-END
+ * FLOW-MAPPING-START
+ * FLOW-MAPPING-END
+ * FLOW-ENTRY
+ * KEY
+ * VALUE
+ *
+ * The tokens FLOW-SEQUENCE-START, FLOW-SEQUENCE-END, FLOW-MAPPING-START, and
+ * FLOW-MAPPING-END represent the indicators '[', ']', '{', and '}'
+ * correspondingly. FLOW-ENTRY represent the ',' indicator. Finally the
+ * indicators '?' and ':', which are used for denoting mapping keys and values,
+ * are represented by the KEY and VALUE tokens.
+ *
+ * The following examples show flow collections:
+ *
+ * 1. A flow sequence:
+ *
+ * [item 1, item 2, item 3]
+ *
+ * Tokens:
+ *
+ * STREAM-START(utf-8)
+ * FLOW-SEQUENCE-START
+ * SCALAR("item 1",plain)
+ * FLOW-ENTRY
+ * SCALAR("item 2",plain)
+ * FLOW-ENTRY
+ * SCALAR("item 3",plain)
+ * FLOW-SEQUENCE-END
+ * STREAM-END
+ *
+ * 2. A flow mapping:
+ *
+ * {
+ * a simple key: a value, # Note that the KEY token is produced.
+ * ? a complex key: another value,
+ * }
+ *
+ * Tokens:
+ *
+ * STREAM-START(utf-8)
+ * FLOW-MAPPING-START
+ * KEY
+ * SCALAR("a simple key",plain)
+ * VALUE
+ * SCALAR("a value",plain)
+ * FLOW-ENTRY
+ * KEY
+ * SCALAR("a complex key",plain)
+ * VALUE
+ * SCALAR("another value",plain)
+ * FLOW-ENTRY
+ * FLOW-MAPPING-END
+ * STREAM-END
+ *
+ * A simple key is a key which is not denoted by the '?' indicator. Note that
+ * the Scanner still produce the KEY token whenever it encounters a simple key.
+ *
+ * For scanning block collections, the following tokens are used (note that we
+ * repeat KEY and VALUE here):
+ *
+ * BLOCK-SEQUENCE-START
+ * BLOCK-MAPPING-START
+ * BLOCK-END
+ * BLOCK-ENTRY
+ * KEY
+ * VALUE
+ *
+ * The tokens BLOCK-SEQUENCE-START and BLOCK-MAPPING-START denote indentation
+ * increase that precedes a block collection (cf. the INDENT token in Python).
+ * The token BLOCK-END denote indentation decrease that ends a block collection
+ * (cf. the DEDENT token in Python). However YAML has some syntax pecularities
+ * that makes detections of these tokens more complex.
+ *
+ * The tokens BLOCK-ENTRY, KEY, and VALUE are used to represent the indicators
+ * '-', '?', and ':' correspondingly.
+ *
+ * The following examples show how the tokens BLOCK-SEQUENCE-START,
+ * BLOCK-MAPPING-START, and BLOCK-END are emitted by the Scanner:
+ *
+ * 1. Block sequences:
+ *
+ * - item 1
+ * - item 2
+ * -
+ * - item 3.1
+ * - item 3.2
+ * -
+ * key 1: value 1
+ * key 2: value 2
+ *
+ * Tokens:
+ *
+ * STREAM-START(utf-8)
+ * BLOCK-SEQUENCE-START
+ * BLOCK-ENTRY
+ * SCALAR("item 1",plain)
+ * BLOCK-ENTRY
+ * SCALAR("item 2",plain)
+ * BLOCK-ENTRY
+ * BLOCK-SEQUENCE-START
+ * BLOCK-ENTRY
+ * SCALAR("item 3.1",plain)
+ * BLOCK-ENTRY
+ * SCALAR("item 3.2",plain)
+ * BLOCK-END
+ * BLOCK-ENTRY
+ * BLOCK-MAPPING-START
+ * KEY
+ * SCALAR("key 1",plain)
+ * VALUE
+ * SCALAR("value 1",plain)
+ * KEY
+ * SCALAR("key 2",plain)
+ * VALUE
+ * SCALAR("value 2",plain)
+ * BLOCK-END
+ * BLOCK-END
+ * STREAM-END
+ *
+ * 2. Block mappings:
+ *
+ * a simple key: a value # The KEY token is produced here.
+ * ? a complex key
+ * : another value
+ * a mapping:
+ * key 1: value 1
+ * key 2: value 2
+ * a sequence:
+ * - item 1
+ * - item 2
+ *
+ * Tokens:
+ *
+ * STREAM-START(utf-8)
+ * BLOCK-MAPPING-START
+ * KEY
+ * SCALAR("a simple key",plain)
+ * VALUE
+ * SCALAR("a value",plain)
+ * KEY
+ * SCALAR("a complex key",plain)
+ * VALUE
+ * SCALAR("another value",plain)
+ * KEY
+ * SCALAR("a mapping",plain)
+ * BLOCK-MAPPING-START
+ * KEY
+ * SCALAR("key 1",plain)
+ * VALUE
+ * SCALAR("value 1",plain)
+ * KEY
+ * SCALAR("key 2",plain)
+ * VALUE
+ * SCALAR("value 2",plain)
+ * BLOCK-END
+ * KEY
+ * SCALAR("a sequence",plain)
+ * VALUE
+ * BLOCK-SEQUENCE-START
+ * BLOCK-ENTRY
+ * SCALAR("item 1",plain)
+ * BLOCK-ENTRY
+ * SCALAR("item 2",plain)
+ * BLOCK-END
+ * BLOCK-END
+ * STREAM-END
+ *
+ * YAML does not always require to start a new block collection from a new
+ * line. If the current line contains only '-', '?', and ':' indicators, a new
+ * block collection may start at the current line. The following examples
+ * illustrate this case:
+ *
+ * 1. Collections in a sequence:
+ *
+ * - - item 1
+ * - item 2
+ * - key 1: value 1
+ * key 2: value 2
+ * - ? complex key
+ * : complex value
+ *
+ * Tokens:
+ *
+ * STREAM-START(utf-8)
+ * BLOCK-SEQUENCE-START
+ * BLOCK-ENTRY
+ * BLOCK-SEQUENCE-START
+ * BLOCK-ENTRY
+ * SCALAR("item 1",plain)
+ * BLOCK-ENTRY
+ * SCALAR("item 2",plain)
+ * BLOCK-END
+ * BLOCK-ENTRY
+ * BLOCK-MAPPING-START
+ * KEY
+ * SCALAR("key 1",plain)
+ * VALUE
+ * SCALAR("value 1",plain)
+ * KEY
+ * SCALAR("key 2",plain)
+ * VALUE
+ * SCALAR("value 2",plain)
+ * BLOCK-END
+ * BLOCK-ENTRY
+ * BLOCK-MAPPING-START
+ * KEY
+ * SCALAR("complex key")
+ * VALUE
+ * SCALAR("complex value")
+ * BLOCK-END
+ * BLOCK-END
+ * STREAM-END
+ *
+ * 2. Collections in a mapping:
+ *
+ * ? a sequence
+ * : - item 1
+ * - item 2
+ * ? a mapping
+ * : key 1: value 1
+ * key 2: value 2
+ *
+ * Tokens:
+ *
+ * STREAM-START(utf-8)
+ * BLOCK-MAPPING-START
+ * KEY
+ * SCALAR("a sequence",plain)
+ * VALUE
+ * BLOCK-SEQUENCE-START
+ * BLOCK-ENTRY
+ * SCALAR("item 1",plain)
+ * BLOCK-ENTRY
+ * SCALAR("item 2",plain)
+ * BLOCK-END
+ * KEY
+ * SCALAR("a mapping",plain)
+ * VALUE
+ * BLOCK-MAPPING-START
+ * KEY
+ * SCALAR("key 1",plain)
+ * VALUE
+ * SCALAR("value 1",plain)
+ * KEY
+ * SCALAR("key 2",plain)
+ * VALUE
+ * SCALAR("value 2",plain)
+ * BLOCK-END
+ * BLOCK-END
+ * STREAM-END
+ *
+ * YAML also permits non-indented sequences if they are included into a block
+ * mapping. In this case, the token BLOCK-SEQUENCE-START is not produced:
+ *
+ * key:
+ * - item 1 # BLOCK-SEQUENCE-START is NOT produced here.
+ * - item 2
+ *
+ * Tokens:
+ *
+ * STREAM-START(utf-8)
+ * BLOCK-MAPPING-START
+ * KEY
+ * SCALAR("key",plain)
+ * VALUE
+ * BLOCK-ENTRY
+ * SCALAR("item 1",plain)
+ * BLOCK-ENTRY
+ * SCALAR("item 2",plain)
+ * BLOCK-END
+ */
+
+#include "yaml_private.h"
+
+/*
+ * Ensure that the buffer contains the required number of characters.
+ * Return 1 on success, 0 on failure (reader error or memory error).
+ */
+
+#define CACHE(parser,length) \
+ (parser->unread >= (length) \
+ ? 1 \
+ : yaml_parser_update_buffer(parser, (length)))
+
+/*
+ * Advance the buffer pointer.
+ */
+
+#define SKIP(parser) \
+ (parser->mark.index ++, \
+ parser->mark.column ++, \
+ parser->unread --, \
+ parser->buffer.pointer += WIDTH(parser->buffer))
+
+#define SKIP_LINE(parser) \
+ (IS_CRLF(parser->buffer) ? \
+ (parser->mark.index += 2, \
+ parser->mark.column = 0, \
+ parser->mark.line ++, \
+ parser->unread -= 2, \
+ parser->buffer.pointer += 2) : \
+ IS_BREAK(parser->buffer) ? \
+ (parser->mark.index ++, \
+ parser->mark.column = 0, \
+ parser->mark.line ++, \
+ parser->unread --, \
+ parser->buffer.pointer += WIDTH(parser->buffer)) : 0)
+
+/*
+ * Copy a character to a string buffer and advance pointers.
+ */
+
+#define READ(parser,string) \
+ (STRING_EXTEND(parser,string) ? \
+ (COPY(string,parser->buffer), \
+ parser->mark.index ++, \
+ parser->mark.column ++, \
+ parser->unread --, \
+ 1) : 0)
+
+/*
+ * Copy a line break character to a string buffer and advance pointers.
+ */
+
+#define READ_LINE(parser,string) \
+ (STRING_EXTEND(parser,string) ? \
+ (((CHECK_AT(parser->buffer,'\r',0) \
+ && CHECK_AT(parser->buffer,'\n',1)) ? /* CR LF -> LF */ \
+ (*((string).pointer++) = (yaml_char_t) '\n', \
+ parser->buffer.pointer += 2, \
+ parser->mark.index += 2, \
+ parser->mark.column = 0, \
+ parser->mark.line ++, \
+ parser->unread -= 2) : \
+ (CHECK_AT(parser->buffer,'\r',0) \
+ || CHECK_AT(parser->buffer,'\n',0)) ? /* CR|LF -> LF */ \
+ (*((string).pointer++) = (yaml_char_t) '\n', \
+ parser->buffer.pointer ++, \
+ parser->mark.index ++, \
+ parser->mark.column = 0, \
+ parser->mark.line ++, \
+ parser->unread --) : \
+ (CHECK_AT(parser->buffer,'\xC2',0) \
+ && CHECK_AT(parser->buffer,'\x85',1)) ? /* NEL -> LF */ \
+ (*((string).pointer++) = (yaml_char_t) '\n', \
+ parser->buffer.pointer += 2, \
+ parser->mark.index ++, \
+ parser->mark.column = 0, \
+ parser->mark.line ++, \
+ parser->unread --) : \
+ (CHECK_AT(parser->buffer,'\xE2',0) && \
+ CHECK_AT(parser->buffer,'\x80',1) && \
+ (CHECK_AT(parser->buffer,'\xA8',2) || \
+ CHECK_AT(parser->buffer,'\xA9',2))) ? /* LS|PS -> LS|PS */ \
+ (*((string).pointer++) = *(parser->buffer.pointer++), \
+ *((string).pointer++) = *(parser->buffer.pointer++), \
+ *((string).pointer++) = *(parser->buffer.pointer++), \
+ parser->mark.index ++, \
+ parser->mark.column = 0, \
+ parser->mark.line ++, \
+ parser->unread --) : 0), \
+ 1) : 0)
+
+/*
+ * Public API declarations.
+ */
+
+YAML_DECLARE(int)
+yaml_parser_scan(yaml_parser_t *parser, yaml_token_t *token);
+
+/*
+ * Error handling.
+ */
+
+static int
+yaml_parser_set_scanner_error(yaml_parser_t *parser, const char *context,
+ yaml_mark_t context_mark, const char *problem);
+
+/*
+ * High-level token API.
+ */
+
+YAML_DECLARE(int)
+yaml_parser_fetch_more_tokens(yaml_parser_t *parser);
+
+static int
+yaml_parser_fetch_next_token(yaml_parser_t *parser);
+
+/*
+ * Potential simple keys.
+ */
+
+static int
+yaml_parser_stale_simple_keys(yaml_parser_t *parser);
+
+static int
+yaml_parser_save_simple_key(yaml_parser_t *parser);
+
+static int
+yaml_parser_remove_simple_key(yaml_parser_t *parser);
+
+static int
+yaml_parser_increase_flow_level(yaml_parser_t *parser);
+
+static int
+yaml_parser_decrease_flow_level(yaml_parser_t *parser);
+
+/*
+ * Indentation treatment.
+ */
+
+static int
+yaml_parser_roll_indent(yaml_parser_t *parser, ptrdiff_t column,
+ ptrdiff_t number, yaml_token_type_t type, yaml_mark_t mark);
+
+static int
+yaml_parser_unroll_indent(yaml_parser_t *parser, ptrdiff_t column);
+
+/*
+ * Token fetchers.
+ */
+
+static int
+yaml_parser_fetch_stream_start(yaml_parser_t *parser);
+
+static int
+yaml_parser_fetch_stream_end(yaml_parser_t *parser);
+
+static int
+yaml_parser_fetch_directive(yaml_parser_t *parser);
+
+static int
+yaml_parser_fetch_document_indicator(yaml_parser_t *parser,
+ yaml_token_type_t type);
+
+static int
+yaml_parser_fetch_flow_collection_start(yaml_parser_t *parser,
+ yaml_token_type_t type);
+
+static int
+yaml_parser_fetch_flow_collection_end(yaml_parser_t *parser,
+ yaml_token_type_t type);
+
+static int
+yaml_parser_fetch_flow_entry(yaml_parser_t *parser);
+
+static int
+yaml_parser_fetch_block_entry(yaml_parser_t *parser);
+
+static int
+yaml_parser_fetch_key(yaml_parser_t *parser);
+
+static int
+yaml_parser_fetch_value(yaml_parser_t *parser);
+
+static int
+yaml_parser_fetch_anchor(yaml_parser_t *parser, yaml_token_type_t type);
+
+static int
+yaml_parser_fetch_tag(yaml_parser_t *parser);
+
+static int
+yaml_parser_fetch_block_scalar(yaml_parser_t *parser, int literal);
+
+static int
+yaml_parser_fetch_flow_scalar(yaml_parser_t *parser, int single);
+
+static int
+yaml_parser_fetch_plain_scalar(yaml_parser_t *parser);
+
+/*
+ * Token scanners.
+ */
+
+static int
+yaml_parser_scan_to_next_token(yaml_parser_t *parser);
+
+static int
+yaml_parser_scan_directive(yaml_parser_t *parser, yaml_token_t *token);
+
+static int
+yaml_parser_scan_directive_name(yaml_parser_t *parser,
+ yaml_mark_t start_mark, yaml_char_t **name);
+
+static int
+yaml_parser_scan_version_directive_value(yaml_parser_t *parser,
+ yaml_mark_t start_mark, int *major, int *minor);
+
+static int
+yaml_parser_scan_version_directive_number(yaml_parser_t *parser,
+ yaml_mark_t start_mark, int *number);
+
+static int
+yaml_parser_scan_tag_directive_value(yaml_parser_t *parser,
+ yaml_mark_t mark, yaml_char_t **handle, yaml_char_t **prefix);
+
+static int
+yaml_parser_scan_anchor(yaml_parser_t *parser, yaml_token_t *token,
+ yaml_token_type_t type);
+
+static int
+yaml_parser_scan_tag(yaml_parser_t *parser, yaml_token_t *token);
+
+static int
+yaml_parser_scan_tag_handle(yaml_parser_t *parser, int directive,
+ yaml_mark_t start_mark, yaml_char_t **handle);
+
+static int
+yaml_parser_scan_tag_uri(yaml_parser_t *parser, int directive,
+ yaml_char_t *head, yaml_mark_t start_mark, yaml_char_t **uri);
+
+static int
+yaml_parser_scan_uri_escapes(yaml_parser_t *parser, int directive,
+ yaml_mark_t start_mark, yaml_string_t *string);
+
+static int
+yaml_parser_scan_block_scalar(yaml_parser_t *parser, yaml_token_t *token,
+ int literal);
+
+static int
+yaml_parser_scan_block_scalar_breaks(yaml_parser_t *parser,
+ int *indent, yaml_string_t *breaks,
+ yaml_mark_t start_mark, yaml_mark_t *end_mark);
+
+static int
+yaml_parser_scan_flow_scalar(yaml_parser_t *parser, yaml_token_t *token,
+ int single);
+
+static int
+yaml_parser_scan_plain_scalar(yaml_parser_t *parser, yaml_token_t *token);
+
+/*
+ * Get the next token.
+ */
+
+YAML_DECLARE(int)
+yaml_parser_scan(yaml_parser_t *parser, yaml_token_t *token)
+{
+ assert(parser); /* Non-NULL parser object is expected. */
+ assert(token); /* Non-NULL token object is expected. */
+
+ /* Erase the token object. */
+
+ memset(token, 0, sizeof(yaml_token_t));
+
+ /* No tokens after STREAM-END or error. */
+
+ if (parser->stream_end_produced || parser->error) {
+ return 1;
+ }
+
+ /* Ensure that the tokens queue contains enough tokens. */
+
+ if (!parser->token_available) {
+ if (!yaml_parser_fetch_more_tokens(parser))
+ return 0;
+ }
+
+ /* Fetch the next token from the queue. */
+
+ *token = DEQUEUE(parser, parser->tokens);
+ parser->token_available = 0;
+ parser->tokens_parsed ++;
+
+ if (token->type == YAML_STREAM_END_TOKEN) {
+ parser->stream_end_produced = 1;
+ }
+
+ return 1;
+}
+
+/*
+ * Set the scanner error and return 0.
+ */
+
+static int
+yaml_parser_set_scanner_error(yaml_parser_t *parser, const char *context,
+ yaml_mark_t context_mark, const char *problem)
+{
+ parser->error = YAML_SCANNER_ERROR;
+ parser->context = context;
+ parser->context_mark = context_mark;
+ parser->problem = problem;
+ parser->problem_mark = parser->mark;
+
+ return 0;
+}
+
+/*
+ * Ensure that the tokens queue contains at least one token which can be
+ * returned to the Parser.
+ */
+
+YAML_DECLARE(int)
+yaml_parser_fetch_more_tokens(yaml_parser_t *parser)
+{
+ int need_more_tokens;
+
+ /* While we need more tokens to fetch, do it. */
+
+ while (1)
+ {
+ /*
+ * Check if we really need to fetch more tokens.
+ */
+
+ need_more_tokens = 0;
+
+ if (parser->tokens.head == parser->tokens.tail)
+ {
+ /* Queue is empty. */
+
+ need_more_tokens = 1;
+ }
+ else
+ {
+ yaml_simple_key_t *simple_key;
+
+ /* Check if any potential simple key may occupy the head position. */
+
+ if (!yaml_parser_stale_simple_keys(parser))
+ return 0;
+
+ for (simple_key = parser->simple_keys.start;
+ simple_key != parser->simple_keys.top; simple_key++) {
+ if (simple_key->possible
+ && simple_key->token_number == parser->tokens_parsed) {
+ need_more_tokens = 1;
+ break;
+ }
+ }
+ }
+
+ /* We are finished. */
+
+ if (!need_more_tokens)
+ break;
+
+ /* Fetch the next token. */
+
+ if (!yaml_parser_fetch_next_token(parser))
+ return 0;
+ }
+
+ parser->token_available = 1;
+
+ return 1;
+}
+
+/*
+ * The dispatcher for token fetchers.
+ */
+
+static int
+yaml_parser_fetch_next_token(yaml_parser_t *parser)
+{
+ /* Ensure that the buffer is initialized. */
+
+ if (!CACHE(parser, 1))
+ return 0;
+
+ /* Check if we just started scanning. Fetch STREAM-START then. */
+
+ if (!parser->stream_start_produced)
+ return yaml_parser_fetch_stream_start(parser);
+
+ /* Eat whitespaces and comments until we reach the next token. */
+
+ if (!yaml_parser_scan_to_next_token(parser))
+ return 0;
+
+ /* Remove obsolete potential simple keys. */
+
+ if (!yaml_parser_stale_simple_keys(parser))
+ return 0;
+
+ /* Check the indentation level against the current column. */
+
+ if (!yaml_parser_unroll_indent(parser, parser->mark.column))
+ return 0;
+
+ /*
+ * Ensure that the buffer contains at least 4 characters. 4 is the length
+ * of the longest indicators ('--- ' and '... ').
+ */
+
+ if (!CACHE(parser, 4))
+ return 0;
+
+ /* Is it the end of the stream? */
+
+ if (IS_Z(parser->buffer))
+ return yaml_parser_fetch_stream_end(parser);
+
+ /* Is it a directive? */
+
+ if (parser->mark.column == 0 && CHECK(parser->buffer, '%'))
+ return yaml_parser_fetch_directive(parser);
+
+ /* Is it the document start indicator? */
+
+ if (parser->mark.column == 0
+ && CHECK_AT(parser->buffer, '-', 0)
+ && CHECK_AT(parser->buffer, '-', 1)
+ && CHECK_AT(parser->buffer, '-', 2)
+ && IS_BLANKZ_AT(parser->buffer, 3))
+ return yaml_parser_fetch_document_indicator(parser,
+ YAML_DOCUMENT_START_TOKEN);
+
+ /* Is it the document end indicator? */
+
+ if (parser->mark.column == 0
+ && CHECK_AT(parser->buffer, '.', 0)
+ && CHECK_AT(parser->buffer, '.', 1)
+ && CHECK_AT(parser->buffer, '.', 2)
+ && IS_BLANKZ_AT(parser->buffer, 3))
+ return yaml_parser_fetch_document_indicator(parser,
+ YAML_DOCUMENT_END_TOKEN);
+
+ /* Is it the flow sequence start indicator? */
+
+ if (CHECK(parser->buffer, '['))
+ return yaml_parser_fetch_flow_collection_start(parser,
+ YAML_FLOW_SEQUENCE_START_TOKEN);
+
+ /* Is it the flow mapping start indicator? */
+
+ if (CHECK(parser->buffer, '{'))
+ return yaml_parser_fetch_flow_collection_start(parser,
+ YAML_FLOW_MAPPING_START_TOKEN);
+
+ /* Is it the flow sequence end indicator? */
+
+ if (CHECK(parser->buffer, ']'))
+ return yaml_parser_fetch_flow_collection_end(parser,
+ YAML_FLOW_SEQUENCE_END_TOKEN);
+
+ /* Is it the flow mapping end indicator? */
+
+ if (CHECK(parser->buffer, '}'))
+ return yaml_parser_fetch_flow_collection_end(parser,
+ YAML_FLOW_MAPPING_END_TOKEN);
+
+ /* Is it the flow entry indicator? */
+
+ if (CHECK(parser->buffer, ','))
+ return yaml_parser_fetch_flow_entry(parser);
+
+ /* Is it the block entry indicator? */
+
+ if (CHECK(parser->buffer, '-') && IS_BLANKZ_AT(parser->buffer, 1))
+ return yaml_parser_fetch_block_entry(parser);
+
+ /* Is it the key indicator? */
+
+ if (CHECK(parser->buffer, '?')
+ && (parser->flow_level || IS_BLANKZ_AT(parser->buffer, 1)))
+ return yaml_parser_fetch_key(parser);
+
+ /* Is it the value indicator? */
+
+ if (CHECK(parser->buffer, ':')
+ && (parser->flow_level || IS_BLANKZ_AT(parser->buffer, 1)))
+ return yaml_parser_fetch_value(parser);
+
+ /* Is it an alias? */
+
+ if (CHECK(parser->buffer, '*'))
+ return yaml_parser_fetch_anchor(parser, YAML_ALIAS_TOKEN);
+
+ /* Is it an anchor? */
+
+ if (CHECK(parser->buffer, '&'))
+ return yaml_parser_fetch_anchor(parser, YAML_ANCHOR_TOKEN);
+
+ /* Is it a tag? */
+
+ if (CHECK(parser->buffer, '!'))
+ return yaml_parser_fetch_tag(parser);
+
+ /* Is it a literal scalar? */
+
+ if (CHECK(parser->buffer, '|') && !parser->flow_level)
+ return yaml_parser_fetch_block_scalar(parser, 1);
+
+ /* Is it a folded scalar? */
+
+ if (CHECK(parser->buffer, '>') && !parser->flow_level)
+ return yaml_parser_fetch_block_scalar(parser, 0);
+
+ /* Is it a single-quoted scalar? */
+
+ if (CHECK(parser->buffer, '\''))
+ return yaml_parser_fetch_flow_scalar(parser, 1);
+
+ /* Is it a double-quoted scalar? */
+
+ if (CHECK(parser->buffer, '"'))
+ return yaml_parser_fetch_flow_scalar(parser, 0);
+
+ /*
+ * Is it a plain scalar?
+ *
+ * A plain scalar may start with any non-blank characters except
+ *
+ * '-', '?', ':', ',', '[', ']', '{', '}',
+ * '#', '&', '*', '!', '|', '>', '\'', '\"',
+ * '%', '@', '`'.
+ *
+ * In the block context (and, for the '-' indicator, in the flow context
+ * too), it may also start with the characters
+ *
+ * '-', '?', ':'
+ *
+ * if it is followed by a non-space character.
+ *
+ * The last rule is more restrictive than the specification requires.
+ */
+
+ if (!(IS_BLANKZ(parser->buffer) || CHECK(parser->buffer, '-')
+ || CHECK(parser->buffer, '?') || CHECK(parser->buffer, ':')
+ || CHECK(parser->buffer, ',') || CHECK(parser->buffer, '[')
+ || CHECK(parser->buffer, ']') || CHECK(parser->buffer, '{')
+ || CHECK(parser->buffer, '}') || CHECK(parser->buffer, '#')
+ || CHECK(parser->buffer, '&') || CHECK(parser->buffer, '*')
+ || CHECK(parser->buffer, '!') || CHECK(parser->buffer, '|')
+ || CHECK(parser->buffer, '>') || CHECK(parser->buffer, '\'')
+ || CHECK(parser->buffer, '"') || CHECK(parser->buffer, '%')
+ || CHECK(parser->buffer, '@') || CHECK(parser->buffer, '`')) ||
+ (CHECK(parser->buffer, '-') && !IS_BLANK_AT(parser->buffer, 1)) ||
+ (!parser->flow_level &&
+ (CHECK(parser->buffer, '?') || CHECK(parser->buffer, ':'))
+ && !IS_BLANKZ_AT(parser->buffer, 1)))
+ return yaml_parser_fetch_plain_scalar(parser);
+
+ /*
+ * If we don't determine the token type so far, it is an error.
+ */
+
+ return yaml_parser_set_scanner_error(parser,
+ "while scanning for the next token", parser->mark,
+ "found character that cannot start any token");
+}
+
+/*
+ * Check the list of potential simple keys and remove the positions that
+ * cannot contain simple keys anymore.
+ */
+
+static int
+yaml_parser_stale_simple_keys(yaml_parser_t *parser)
+{
+ yaml_simple_key_t *simple_key;
+
+ /* Check for a potential simple key for each flow level. */
+
+ for (simple_key = parser->simple_keys.start;
+ simple_key != parser->simple_keys.top; simple_key ++)
+ {
+ /*
+ * The specification requires that a simple key
+ *
+ * - is limited to a single line,
+ * - is shorter than 1024 characters.
+ */
+
+ if (simple_key->possible
+ && (simple_key->mark.line < parser->mark.line
+ || simple_key->mark.index+1024 < parser->mark.index)) {
+
+ /* Check if the potential simple key to be removed is required. */
+
+ if (simple_key->required) {
+ return yaml_parser_set_scanner_error(parser,
+ "while scanning a simple key", simple_key->mark,
+ "could not find expected ':'");
+ }
+
+ simple_key->possible = 0;
+ }
+ }
+
+ return 1;
+}
+
+/*
+ * Check if a simple key may start at the current position and add it if
+ * needed.
+ */
+
+static int
+yaml_parser_save_simple_key(yaml_parser_t *parser)
+{
+ /*
+ * A simple key is required at the current position if the scanner is in
+ * the block context and the current column coincides with the indentation
+ * level.
+ */
+
+ int required = (!parser->flow_level
+ && parser->indent == (ptrdiff_t)parser->mark.column);
+
+ /*
+ * A simple key is required only when it is the first token in the current
+ * line. Therefore it is always allowed. But we add a check anyway.
+ */
+
+ assert(parser->simple_key_allowed || !required); /* Impossible. */
+
+ /*
+ * If the current position may start a simple key, save it.
+ */
+
+ if (parser->simple_key_allowed)
+ {
+ yaml_simple_key_t simple_key;
+ simple_key.possible = 1;
+ simple_key.required = required;
+ simple_key.token_number =
+ parser->tokens_parsed + (parser->tokens.tail - parser->tokens.head);
+ simple_key.mark = parser->mark;
+
+ if (!yaml_parser_remove_simple_key(parser)) return 0;
+
+ *(parser->simple_keys.top-1) = simple_key;
+ }
+
+ return 1;
+}
+
+/*
+ * Remove a potential simple key at the current flow level.
+ */
+
+static int
+yaml_parser_remove_simple_key(yaml_parser_t *parser)
+{
+ yaml_simple_key_t *simple_key = parser->simple_keys.top-1;
+
+ if (simple_key->possible)
+ {
+ /* If the key is required, it is an error. */
+
+ if (simple_key->required) {
+ return yaml_parser_set_scanner_error(parser,
+ "while scanning a simple key", simple_key->mark,
+ "could not find expected ':'");
+ }
+ }
+
+ /* Remove the key from the stack. */
+
+ simple_key->possible = 0;
+
+ return 1;
+}
+
+/*
+ * Increase the flow level and resize the simple key list if needed.
+ */
+
+static int
+yaml_parser_increase_flow_level(yaml_parser_t *parser)
+{
+ yaml_simple_key_t empty_simple_key = { 0, 0, 0, { 0, 0, 0 } };
+
+ /* Reset the simple key on the next level. */
+
+ if (!PUSH(parser, parser->simple_keys, empty_simple_key))
+ return 0;
+
+ /* Increase the flow level. */
+
+ if (parser->flow_level == INT_MAX) {
+ parser->error = YAML_MEMORY_ERROR;
+ return 0;
+ }
+
+ parser->flow_level++;
+
+ return 1;
+}
+
+/*
+ * Decrease the flow level.
+ */
+
+static int
+yaml_parser_decrease_flow_level(yaml_parser_t *parser)
+{
+ if (parser->flow_level) {
+ parser->flow_level --;
+ (void)POP(parser, parser->simple_keys);
+ }
+
+ return 1;
+}
+
+/*
+ * Push the current indentation level to the stack and set the new level
+ * the current column is greater than the indentation level. In this case,
+ * append or insert the specified token into the token queue.
+ *
+ */
+
+static int
+yaml_parser_roll_indent(yaml_parser_t *parser, ptrdiff_t column,
+ ptrdiff_t number, yaml_token_type_t type, yaml_mark_t mark)
+{
+ yaml_token_t token;
+
+ /* In the flow context, do nothing. */
+
+ if (parser->flow_level)
+ return 1;
+
+ if (parser->indent < column)
+ {
+ /*
+ * Push the current indentation level to the stack and set the new
+ * indentation level.
+ */
+
+ if (!PUSH(parser, parser->indents, parser->indent))
+ return 0;
+
+#if PTRDIFF_MAX > INT_MAX
+ if (column > INT_MAX) {
+ parser->error = YAML_MEMORY_ERROR;
+ return 0;
+ }
+#endif
+
+ parser->indent = (int)column;
+
+ /* Create a token and insert it into the queue. */
+
+ TOKEN_INIT(token, type, mark, mark);
+
+ if (number == -1) {
+ if (!ENQUEUE(parser, parser->tokens, token))
+ return 0;
+ }
+ else {
+ if (!QUEUE_INSERT(parser,
+ parser->tokens, number - parser->tokens_parsed, token))
+ return 0;
+ }
+ }
+
+ return 1;
+}
+
+/*
+ * Pop indentation levels from the indents stack until the current level
+ * becomes less or equal to the column. For each intendation level, append
+ * the BLOCK-END token.
+ */
+
+
+static int
+yaml_parser_unroll_indent(yaml_parser_t *parser, ptrdiff_t column)
+{
+ yaml_token_t token;
+
+ /* In the flow context, do nothing. */
+
+ if (parser->flow_level)
+ return 1;
+
+ /* Loop through the intendation levels in the stack. */
+
+ while (parser->indent > column)
+ {
+ /* Create a token and append it to the queue. */
+
+ TOKEN_INIT(token, YAML_BLOCK_END_TOKEN, parser->mark, parser->mark);
+
+ if (!ENQUEUE(parser, parser->tokens, token))
+ return 0;
+
+ /* Pop the indentation level. */
+
+ parser->indent = POP(parser, parser->indents);
+ }
+
+ return 1;
+}
+
+/*
+ * Initialize the scanner and produce the STREAM-START token.
+ */
+
+static int
+yaml_parser_fetch_stream_start(yaml_parser_t *parser)
+{
+ yaml_simple_key_t simple_key = { 0, 0, 0, { 0, 0, 0 } };
+ yaml_token_t token;
+
+ /* Set the initial indentation. */
+
+ parser->indent = -1;
+
+ /* Initialize the simple key stack. */
+
+ if (!PUSH(parser, parser->simple_keys, simple_key))
+ return 0;
+
+ /* A simple key is allowed at the beginning of the stream. */
+
+ parser->simple_key_allowed = 1;
+
+ /* We have started. */
+
+ parser->stream_start_produced = 1;
+
+ /* Create the STREAM-START token and append it to the queue. */
+
+ STREAM_START_TOKEN_INIT(token, parser->encoding,
+ parser->mark, parser->mark);
+
+ if (!ENQUEUE(parser, parser->tokens, token))
+ return 0;
+
+ return 1;
+}
+
+/*
+ * Produce the STREAM-END token and shut down the scanner.
+ */
+
+static int
+yaml_parser_fetch_stream_end(yaml_parser_t *parser)
+{
+ yaml_token_t token;
+
+ /* Force new line. */
+
+ if (parser->mark.column != 0) {
+ parser->mark.column = 0;
+ parser->mark.line ++;
+ }
+
+ /* Reset the indentation level. */
+
+ if (!yaml_parser_unroll_indent(parser, -1))
+ return 0;
+
+ /* Reset simple keys. */
+
+ if (!yaml_parser_remove_simple_key(parser))
+ return 0;
+
+ parser->simple_key_allowed = 0;
+
+ /* Create the STREAM-END token and append it to the queue. */
+
+ STREAM_END_TOKEN_INIT(token, parser->mark, parser->mark);
+
+ if (!ENQUEUE(parser, parser->tokens, token))
+ return 0;
+
+ return 1;
+}
+
+/*
+ * Produce a VERSION-DIRECTIVE or TAG-DIRECTIVE token.
+ */
+
+static int
+yaml_parser_fetch_directive(yaml_parser_t *parser)
+{
+ yaml_token_t token;
+
+ /* Reset the indentation level. */
+
+ if (!yaml_parser_unroll_indent(parser, -1))
+ return 0;
+
+ /* Reset simple keys. */
+
+ if (!yaml_parser_remove_simple_key(parser))
+ return 0;
+
+ parser->simple_key_allowed = 0;
+
+ /* Create the YAML-DIRECTIVE or TAG-DIRECTIVE token. */
+
+ if (!yaml_parser_scan_directive(parser, &token))
+ return 0;
+
+ /* Append the token to the queue. */
+
+ if (!ENQUEUE(parser, parser->tokens, token)) {
+ yaml_token_delete(&token);
+ return 0;
+ }
+
+ return 1;
+}
+
+/*
+ * Produce the DOCUMENT-START or DOCUMENT-END token.
+ */
+
+static int
+yaml_parser_fetch_document_indicator(yaml_parser_t *parser,
+ yaml_token_type_t type)
+{
+ yaml_mark_t start_mark, end_mark;
+ yaml_token_t token;
+
+ /* Reset the indentation level. */
+
+ if (!yaml_parser_unroll_indent(parser, -1))
+ return 0;
+
+ /* Reset simple keys. */
+
+ if (!yaml_parser_remove_simple_key(parser))
+ return 0;
+
+ parser->simple_key_allowed = 0;
+
+ /* Consume the token. */
+
+ start_mark = parser->mark;
+
+ SKIP(parser);
+ SKIP(parser);
+ SKIP(parser);
+
+ end_mark = parser->mark;
+
+ /* Create the DOCUMENT-START or DOCUMENT-END token. */
+
+ TOKEN_INIT(token, type, start_mark, end_mark);
+
+ /* Append the token to the queue. */
+
+ if (!ENQUEUE(parser, parser->tokens, token))
+ return 0;
+
+ return 1;
+}
+
+/*
+ * Produce the FLOW-SEQUENCE-START or FLOW-MAPPING-START token.
+ */
+
+static int
+yaml_parser_fetch_flow_collection_start(yaml_parser_t *parser,
+ yaml_token_type_t type)
+{
+ yaml_mark_t start_mark, end_mark;
+ yaml_token_t token;
+
+ /* The indicators '[' and '{' may start a simple key. */
+
+ if (!yaml_parser_save_simple_key(parser))
+ return 0;
+
+ /* Increase the flow level. */
+
+ if (!yaml_parser_increase_flow_level(parser))
+ return 0;
+
+ /* A simple key may follow the indicators '[' and '{'. */
+
+ parser->simple_key_allowed = 1;
+
+ /* Consume the token. */
+
+ start_mark = parser->mark;
+ SKIP(parser);
+ end_mark = parser->mark;
+
+ /* Create the FLOW-SEQUENCE-START of FLOW-MAPPING-START token. */
+
+ TOKEN_INIT(token, type, start_mark, end_mark);
+
+ /* Append the token to the queue. */
+
+ if (!ENQUEUE(parser, parser->tokens, token))
+ return 0;
+
+ return 1;
+}
+
+/*
+ * Produce the FLOW-SEQUENCE-END or FLOW-MAPPING-END token.
+ */
+
+static int
+yaml_parser_fetch_flow_collection_end(yaml_parser_t *parser,
+ yaml_token_type_t type)
+{
+ yaml_mark_t start_mark, end_mark;
+ yaml_token_t token;
+
+ /* Reset any potential simple key on the current flow level. */
+
+ if (!yaml_parser_remove_simple_key(parser))
+ return 0;
+
+ /* Decrease the flow level. */
+
+ if (!yaml_parser_decrease_flow_level(parser))
+ return 0;
+
+ /* No simple keys after the indicators ']' and '}'. */
+
+ parser->simple_key_allowed = 0;
+
+ /* Consume the token. */
+
+ start_mark = parser->mark;
+ SKIP(parser);
+ end_mark = parser->mark;
+
+ /* Create the FLOW-SEQUENCE-END of FLOW-MAPPING-END token. */
+
+ TOKEN_INIT(token, type, start_mark, end_mark);
+
+ /* Append the token to the queue. */
+
+ if (!ENQUEUE(parser, parser->tokens, token))
+ return 0;
+
+ return 1;
+}
+
+/*
+ * Produce the FLOW-ENTRY token.
+ */
+
+static int
+yaml_parser_fetch_flow_entry(yaml_parser_t *parser)
+{
+ yaml_mark_t start_mark, end_mark;
+ yaml_token_t token;
+
+ /* Reset any potential simple keys on the current flow level. */
+
+ if (!yaml_parser_remove_simple_key(parser))
+ return 0;
+
+ /* Simple keys are allowed after ','. */
+
+ parser->simple_key_allowed = 1;
+
+ /* Consume the token. */
+
+ start_mark = parser->mark;
+ SKIP(parser);
+ end_mark = parser->mark;
+
+ /* Create the FLOW-ENTRY token and append it to the queue. */
+
+ TOKEN_INIT(token, YAML_FLOW_ENTRY_TOKEN, start_mark, end_mark);
+
+ if (!ENQUEUE(parser, parser->tokens, token))
+ return 0;
+
+ return 1;
+}
+
+/*
+ * Produce the BLOCK-ENTRY token.
+ */
+
+static int
+yaml_parser_fetch_block_entry(yaml_parser_t *parser)
+{
+ yaml_mark_t start_mark, end_mark;
+ yaml_token_t token;
+
+ /* Check if the scanner is in the block context. */
+
+ if (!parser->flow_level)
+ {
+ /* Check if we are allowed to start a new entry. */
+
+ if (!parser->simple_key_allowed) {
+ return yaml_parser_set_scanner_error(parser, NULL, parser->mark,
+ "block sequence entries are not allowed in this context");
+ }
+
+ /* Add the BLOCK-SEQUENCE-START token if needed. */
+
+ if (!yaml_parser_roll_indent(parser, parser->mark.column, -1,
+ YAML_BLOCK_SEQUENCE_START_TOKEN, parser->mark))
+ return 0;
+ }
+ else
+ {
+ /*
+ * It is an error for the '-' indicator to occur in the flow context,
+ * but we let the Parser detect and report about it because the Parser
+ * is able to point to the context.
+ */
+ }
+
+ /* Reset any potential simple keys on the current flow level. */
+
+ if (!yaml_parser_remove_simple_key(parser))
+ return 0;
+
+ /* Simple keys are allowed after '-'. */
+
+ parser->simple_key_allowed = 1;
+
+ /* Consume the token. */
+
+ start_mark = parser->mark;
+ SKIP(parser);
+ end_mark = parser->mark;
+
+ /* Create the BLOCK-ENTRY token and append it to the queue. */
+
+ TOKEN_INIT(token, YAML_BLOCK_ENTRY_TOKEN, start_mark, end_mark);
+
+ if (!ENQUEUE(parser, parser->tokens, token))
+ return 0;
+
+ return 1;
+}
+
+/*
+ * Produce the KEY token.
+ */
+
+static int
+yaml_parser_fetch_key(yaml_parser_t *parser)
+{
+ yaml_mark_t start_mark, end_mark;
+ yaml_token_t token;
+
+ /* In the block context, additional checks are required. */
+
+ if (!parser->flow_level)
+ {
+ /* Check if we are allowed to start a new key (not nessesary simple). */
+
+ if (!parser->simple_key_allowed) {
+ return yaml_parser_set_scanner_error(parser, NULL, parser->mark,
+ "mapping keys are not allowed in this context");
+ }
+
+ /* Add the BLOCK-MAPPING-START token if needed. */
+
+ if (!yaml_parser_roll_indent(parser, parser->mark.column, -1,
+ YAML_BLOCK_MAPPING_START_TOKEN, parser->mark))
+ return 0;
+ }
+
+ /* Reset any potential simple keys on the current flow level. */
+
+ if (!yaml_parser_remove_simple_key(parser))
+ return 0;
+
+ /* Simple keys are allowed after '?' in the block context. */
+
+ parser->simple_key_allowed = (!parser->flow_level);
+
+ /* Consume the token. */
+
+ start_mark = parser->mark;
+ SKIP(parser);
+ end_mark = parser->mark;
+
+ /* Create the KEY token and append it to the queue. */
+
+ TOKEN_INIT(token, YAML_KEY_TOKEN, start_mark, end_mark);
+
+ if (!ENQUEUE(parser, parser->tokens, token))
+ return 0;
+
+ return 1;
+}
+
+/*
+ * Produce the VALUE token.
+ */
+
+static int
+yaml_parser_fetch_value(yaml_parser_t *parser)
+{
+ yaml_mark_t start_mark, end_mark;
+ yaml_token_t token;
+ yaml_simple_key_t *simple_key = parser->simple_keys.top-1;
+
+ /* Have we found a simple key? */
+
+ if (simple_key->possible)
+ {
+
+ /* Create the KEY token and insert it into the queue. */
+
+ TOKEN_INIT(token, YAML_KEY_TOKEN, simple_key->mark, simple_key->mark);
+
+ if (!QUEUE_INSERT(parser, parser->tokens,
+ simple_key->token_number - parser->tokens_parsed, token))
+ return 0;
+
+ /* In the block context, we may need to add the BLOCK-MAPPING-START token. */
+
+ if (!yaml_parser_roll_indent(parser, simple_key->mark.column,
+ simple_key->token_number,
+ YAML_BLOCK_MAPPING_START_TOKEN, simple_key->mark))
+ return 0;
+
+ /* Remove the simple key. */
+
+ simple_key->possible = 0;
+
+ /* A simple key cannot follow another simple key. */
+
+ parser->simple_key_allowed = 0;
+ }
+ else
+ {
+ /* The ':' indicator follows a complex key. */
+
+ /* In the block context, extra checks are required. */
+
+ if (!parser->flow_level)
+ {
+ /* Check if we are allowed to start a complex value. */
+
+ if (!parser->simple_key_allowed) {
+ return yaml_parser_set_scanner_error(parser, NULL, parser->mark,
+ "mapping values are not allowed in this context");
+ }
+
+ /* Add the BLOCK-MAPPING-START token if needed. */
+
+ if (!yaml_parser_roll_indent(parser, parser->mark.column, -1,
+ YAML_BLOCK_MAPPING_START_TOKEN, parser->mark))
+ return 0;
+ }
+
+ /* Simple keys after ':' are allowed in the block context. */
+
+ parser->simple_key_allowed = (!parser->flow_level);
+ }
+
+ /* Consume the token. */
+
+ start_mark = parser->mark;
+ SKIP(parser);
+ end_mark = parser->mark;
+
+ /* Create the VALUE token and append it to the queue. */
+
+ TOKEN_INIT(token, YAML_VALUE_TOKEN, start_mark, end_mark);
+
+ if (!ENQUEUE(parser, parser->tokens, token))
+ return 0;
+
+ return 1;
+}
+
+/*
+ * Produce the ALIAS or ANCHOR token.
+ */
+
+static int
+yaml_parser_fetch_anchor(yaml_parser_t *parser, yaml_token_type_t type)
+{
+ yaml_token_t token;
+
+ /* An anchor or an alias could be a simple key. */
+
+ if (!yaml_parser_save_simple_key(parser))
+ return 0;
+
+ /* A simple key cannot follow an anchor or an alias. */
+
+ parser->simple_key_allowed = 0;
+
+ /* Create the ALIAS or ANCHOR token and append it to the queue. */
+
+ if (!yaml_parser_scan_anchor(parser, &token, type))
+ return 0;
+
+ if (!ENQUEUE(parser, parser->tokens, token)) {
+ yaml_token_delete(&token);
+ return 0;
+ }
+ return 1;
+}
+
+/*
+ * Produce the TAG token.
+ */
+
+static int
+yaml_parser_fetch_tag(yaml_parser_t *parser)
+{
+ yaml_token_t token;
+
+ /* A tag could be a simple key. */
+
+ if (!yaml_parser_save_simple_key(parser))
+ return 0;
+
+ /* A simple key cannot follow a tag. */
+
+ parser->simple_key_allowed = 0;
+
+ /* Create the TAG token and append it to the queue. */
+
+ if (!yaml_parser_scan_tag(parser, &token))
+ return 0;
+
+ if (!ENQUEUE(parser, parser->tokens, token)) {
+ yaml_token_delete(&token);
+ return 0;
+ }
+
+ return 1;
+}
+
+/*
+ * Produce the SCALAR(...,literal) or SCALAR(...,folded) tokens.
+ */
+
+static int
+yaml_parser_fetch_block_scalar(yaml_parser_t *parser, int literal)
+{
+ yaml_token_t token;
+
+ /* Remove any potential simple keys. */
+
+ if (!yaml_parser_remove_simple_key(parser))
+ return 0;
+
+ /* A simple key may follow a block scalar. */
+
+ parser->simple_key_allowed = 1;
+
+ /* Create the SCALAR token and append it to the queue. */
+
+ if (!yaml_parser_scan_block_scalar(parser, &token, literal))
+ return 0;
+
+ if (!ENQUEUE(parser, parser->tokens, token)) {
+ yaml_token_delete(&token);
+ return 0;
+ }
+
+ return 1;
+}
+
+/*
+ * Produce the SCALAR(...,single-quoted) or SCALAR(...,double-quoted) tokens.
+ */
+
+static int
+yaml_parser_fetch_flow_scalar(yaml_parser_t *parser, int single)
+{
+ yaml_token_t token;
+
+ /* A plain scalar could be a simple key. */
+
+ if (!yaml_parser_save_simple_key(parser))
+ return 0;
+
+ /* A simple key cannot follow a flow scalar. */
+
+ parser->simple_key_allowed = 0;
+
+ /* Create the SCALAR token and append it to the queue. */
+
+ if (!yaml_parser_scan_flow_scalar(parser, &token, single))
+ return 0;
+
+ if (!ENQUEUE(parser, parser->tokens, token)) {
+ yaml_token_delete(&token);
+ return 0;
+ }
+
+ return 1;
+}
+
+/*
+ * Produce the SCALAR(...,plain) token.
+ */
+
+static int
+yaml_parser_fetch_plain_scalar(yaml_parser_t *parser)
+{
+ yaml_token_t token;
+
+ /* A plain scalar could be a simple key. */
+
+ if (!yaml_parser_save_simple_key(parser))
+ return 0;
+
+ /* A simple key cannot follow a flow scalar. */
+
+ parser->simple_key_allowed = 0;
+
+ /* Create the SCALAR token and append it to the queue. */
+
+ if (!yaml_parser_scan_plain_scalar(parser, &token))
+ return 0;
+
+ if (!ENQUEUE(parser, parser->tokens, token)) {
+ yaml_token_delete(&token);
+ return 0;
+ }
+
+ return 1;
+}
+
+/*
+ * Eat whitespaces and comments until the next token is found.
+ */
+
+static int
+yaml_parser_scan_to_next_token(yaml_parser_t *parser)
+{
+ /* Until the next token is not found. */
+
+ while (1)
+ {
+ /* Allow the BOM mark to start a line. */
+
+ if (!CACHE(parser, 1)) return 0;
+
+ if (parser->mark.column == 0 && IS_BOM(parser->buffer))
+ SKIP(parser);
+
+ /*
+ * Eat whitespaces.
+ *
+ * Tabs are allowed:
+ *
+ * - in the flow context;
+ * - in the block context, but not at the beginning of the line or
+ * after '-', '?', or ':' (complex value).
+ */
+
+ if (!CACHE(parser, 1)) return 0;
+
+ while (CHECK(parser->buffer,' ') ||
+ ((parser->flow_level || !parser->simple_key_allowed) &&
+ CHECK(parser->buffer, '\t'))) {
+ SKIP(parser);
+ if (!CACHE(parser, 1)) return 0;
+ }
+
+ /* Eat a comment until a line break. */
+
+ if (CHECK(parser->buffer, '#')) {
+ while (!IS_BREAKZ(parser->buffer)) {
+ SKIP(parser);
+ if (!CACHE(parser, 1)) return 0;
+ }
+ }
+
+ /* If it is a line break, eat it. */
+
+ if (IS_BREAK(parser->buffer))
+ {
+ if (!CACHE(parser, 2)) return 0;
+ SKIP_LINE(parser);
+
+ /* In the block context, a new line may start a simple key. */
+
+ if (!parser->flow_level) {
+ parser->simple_key_allowed = 1;
+ }
+ }
+ else
+ {
+ /* We have found a token. */
+
+ break;
+ }
+ }
+
+ return 1;
+}
+
+/*
+ * Scan a YAML-DIRECTIVE or TAG-DIRECTIVE token.
+ *
+ * Scope:
+ * %YAML 1.1 # a comment \n
+ * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ * %TAG !yaml! tag:yaml.org,2002: \n
+ * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ */
+
+int
+yaml_parser_scan_directive(yaml_parser_t *parser, yaml_token_t *token)
+{
+ yaml_mark_t start_mark, end_mark;
+ yaml_char_t *name = NULL;
+ int major, minor;
+ yaml_char_t *handle = NULL, *prefix = NULL;
+
+ /* Eat '%'. */
+
+ start_mark = parser->mark;
+
+ SKIP(parser);
+
+ /* Scan the directive name. */
+
+ if (!yaml_parser_scan_directive_name(parser, start_mark, &name))
+ goto error;
+
+ /* Is it a YAML directive? */
+
+ if (strcmp((char *)name, "YAML") == 0)
+ {
+ /* Scan the VERSION directive value. */
+
+ if (!yaml_parser_scan_version_directive_value(parser, start_mark,
+ &major, &minor))
+ goto error;
+
+ end_mark = parser->mark;
+
+ /* Create a VERSION-DIRECTIVE token. */
+
+ VERSION_DIRECTIVE_TOKEN_INIT(*token, major, minor,
+ start_mark, end_mark);
+ }
+
+ /* Is it a TAG directive? */
+
+ else if (strcmp((char *)name, "TAG") == 0)
+ {
+ /* Scan the TAG directive value. */
+
+ if (!yaml_parser_scan_tag_directive_value(parser, start_mark,
+ &handle, &prefix))
+ goto error;
+
+ end_mark = parser->mark;
+
+ /* Create a TAG-DIRECTIVE token. */
+
+ TAG_DIRECTIVE_TOKEN_INIT(*token, handle, prefix,
+ start_mark, end_mark);
+ }
+
+ /* Unknown directive. */
+
+ else
+ {
+ yaml_parser_set_scanner_error(parser, "while scanning a directive",
+ start_mark, "found uknown directive name");
+ goto error;
+ }
+
+ /* Eat the rest of the line including any comments. */
+
+ if (!CACHE(parser, 1)) goto error;
+
+ while (IS_BLANK(parser->buffer)) {
+ SKIP(parser);
+ if (!CACHE(parser, 1)) goto error;
+ }
+
+ if (CHECK(parser->buffer, '#')) {
+ while (!IS_BREAKZ(parser->buffer)) {
+ SKIP(parser);
+ if (!CACHE(parser, 1)) goto error;
+ }
+ }
+
+ /* Check if we are at the end of the line. */
+
+ if (!IS_BREAKZ(parser->buffer)) {
+ yaml_parser_set_scanner_error(parser, "while scanning a directive",
+ start_mark, "did not find expected comment or line break");
+ goto error;
+ }
+
+ /* Eat a line break. */
+
+ if (IS_BREAK(parser->buffer)) {
+ if (!CACHE(parser, 2)) goto error;
+ SKIP_LINE(parser);
+ }
+
+ yaml_free(name);
+
+ return 1;
+
+error:
+ yaml_free(prefix);
+ yaml_free(handle);
+ yaml_free(name);
+ return 0;
+}
+
+/*
+ * Scan the directive name.
+ *
+ * Scope:
+ * %YAML 1.1 # a comment \n
+ * ^^^^
+ * %TAG !yaml! tag:yaml.org,2002: \n
+ * ^^^
+ */
+
+static int
+yaml_parser_scan_directive_name(yaml_parser_t *parser,
+ yaml_mark_t start_mark, yaml_char_t **name)
+{
+ yaml_string_t string = NULL_STRING;
+
+ if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;
+
+ /* Consume the directive name. */
+
+ if (!CACHE(parser, 1)) goto error;
+
+ while (IS_ALPHA(parser->buffer))
+ {
+ if (!READ(parser, string)) goto error;
+ if (!CACHE(parser, 1)) goto error;
+ }
+
+ /* Check if the name is empty. */
+
+ if (string.start == string.pointer) {
+ yaml_parser_set_scanner_error(parser, "while scanning a directive",
+ start_mark, "could not find expected directive name");
+ goto error;
+ }
+
+ /* Check for an blank character after the name. */
+
+ if (!IS_BLANKZ(parser->buffer)) {
+ yaml_parser_set_scanner_error(parser, "while scanning a directive",
+ start_mark, "found unexpected non-alphabetical character");
+ goto error;
+ }
+
+ *name = string.start;
+
+ return 1;
+
+error:
+ STRING_DEL(parser, string);
+ return 0;
+}
+
+/*
+ * Scan the value of VERSION-DIRECTIVE.
+ *
+ * Scope:
+ * %YAML 1.1 # a comment \n
+ * ^^^^^^
+ */
+
+static int
+yaml_parser_scan_version_directive_value(yaml_parser_t *parser,
+ yaml_mark_t start_mark, int *major, int *minor)
+{
+ /* Eat whitespaces. */
+
+ if (!CACHE(parser, 1)) return 0;
+
+ while (IS_BLANK(parser->buffer)) {
+ SKIP(parser);
+ if (!CACHE(parser, 1)) return 0;
+ }
+
+ /* Consume the major version number. */
+
+ if (!yaml_parser_scan_version_directive_number(parser, start_mark, major))
+ return 0;
+
+ /* Eat '.'. */
+
+ if (!CHECK(parser->buffer, '.')) {
+ return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive",
+ start_mark, "did not find expected digit or '.' character");
+ }
+
+ SKIP(parser);
+
+ /* Consume the minor version number. */
+
+ if (!yaml_parser_scan_version_directive_number(parser, start_mark, minor))
+ return 0;
+
+ return 1;
+}
+
+#define MAX_NUMBER_LENGTH 9
+
+/*
+ * Scan the version number of VERSION-DIRECTIVE.
+ *
+ * Scope:
+ * %YAML 1.1 # a comment \n
+ * ^
+ * %YAML 1.1 # a comment \n
+ * ^
+ */
+
+static int
+yaml_parser_scan_version_directive_number(yaml_parser_t *parser,
+ yaml_mark_t start_mark, int *number)
+{
+ int value = 0;
+ size_t length = 0;
+
+ /* Repeat while the next character is digit. */
+
+ if (!CACHE(parser, 1)) return 0;
+
+ while (IS_DIGIT(parser->buffer))
+ {
+ /* Check if the number is too long. */
+
+ if (++length > MAX_NUMBER_LENGTH) {
+ return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive",
+ start_mark, "found extremely long version number");
+ }
+
+ value = value*10 + AS_DIGIT(parser->buffer);
+
+ SKIP(parser);
+
+ if (!CACHE(parser, 1)) return 0;
+ }
+
+ /* Check if the number was present. */
+
+ if (!length) {
+ return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive",
+ start_mark, "did not find expected version number");
+ }
+
+ *number = value;
+
+ return 1;
+}
+
+/*
+ * Scan the value of a TAG-DIRECTIVE token.
+ *
+ * Scope:
+ * %TAG !yaml! tag:yaml.org,2002: \n
+ * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ */
+
+static int
+yaml_parser_scan_tag_directive_value(yaml_parser_t *parser,
+ yaml_mark_t start_mark, yaml_char_t **handle, yaml_char_t **prefix)
+{
+ yaml_char_t *handle_value = NULL;
+ yaml_char_t *prefix_value = NULL;
+
+ /* Eat whitespaces. */
+
+ if (!CACHE(parser, 1)) goto error;
+
+ while (IS_BLANK(parser->buffer)) {
+ SKIP(parser);
+ if (!CACHE(parser, 1)) goto error;
+ }
+
+ /* Scan a handle. */
+
+ if (!yaml_parser_scan_tag_handle(parser, 1, start_mark, &handle_value))
+ goto error;
+
+ /* Expect a whitespace. */
+
+ if (!CACHE(parser, 1)) goto error;
+
+ if (!IS_BLANK(parser->buffer)) {
+ yaml_parser_set_scanner_error(parser, "while scanning a %TAG directive",
+ start_mark, "did not find expected whitespace");
+ goto error;
+ }
+
+ /* Eat whitespaces. */
+
+ while (IS_BLANK(parser->buffer)) {
+ SKIP(parser);
+ if (!CACHE(parser, 1)) goto error;
+ }
+
+ /* Scan a prefix. */
+
+ if (!yaml_parser_scan_tag_uri(parser, 1, NULL, start_mark, &prefix_value))
+ goto error;
+
+ /* Expect a whitespace or line break. */
+
+ if (!CACHE(parser, 1)) goto error;
+
+ if (!IS_BLANKZ(parser->buffer)) {
+ yaml_parser_set_scanner_error(parser, "while scanning a %TAG directive",
+ start_mark, "did not find expected whitespace or line break");
+ goto error;
+ }
+
+ *handle = handle_value;
+ *prefix = prefix_value;
+
+ return 1;
+
+error:
+ yaml_free(handle_value);
+ yaml_free(prefix_value);
+ return 0;
+}
+
+static int
+yaml_parser_scan_anchor(yaml_parser_t *parser, yaml_token_t *token,
+ yaml_token_type_t type)
+{
+ int length = 0;
+ yaml_mark_t start_mark, end_mark;
+ yaml_string_t string = NULL_STRING;
+
+ if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;
+
+ /* Eat the indicator character. */
+
+ start_mark = parser->mark;
+
+ SKIP(parser);
+
+ /* Consume the value. */
+
+ if (!CACHE(parser, 1)) goto error;
+
+ while (IS_ALPHA(parser->buffer)) {
+ if (!READ(parser, string)) goto error;
+ if (!CACHE(parser, 1)) goto error;
+ length ++;
+ }
+
+ end_mark = parser->mark;
+
+ /*
+ * Check if length of the anchor is greater than 0 and it is followed by
+ * a whitespace character or one of the indicators:
+ *
+ * '?', ':', ',', ']', '}', '%', '@', '`'.
+ */
+
+ if (!length || !(IS_BLANKZ(parser->buffer) || CHECK(parser->buffer, '?')
+ || CHECK(parser->buffer, ':') || CHECK(parser->buffer, ',')
+ || CHECK(parser->buffer, ']') || CHECK(parser->buffer, '}')
+ || CHECK(parser->buffer, '%') || CHECK(parser->buffer, '@')
+ || CHECK(parser->buffer, '`'))) {
+ yaml_parser_set_scanner_error(parser, type == YAML_ANCHOR_TOKEN ?
+ "while scanning an anchor" : "while scanning an alias", start_mark,
+ "did not find expected alphabetic or numeric character");
+ goto error;
+ }
+
+ /* Create a token. */
+
+ if (type == YAML_ANCHOR_TOKEN) {
+ ANCHOR_TOKEN_INIT(*token, string.start, start_mark, end_mark);
+ }
+ else {
+ ALIAS_TOKEN_INIT(*token, string.start, start_mark, end_mark);
+ }
+
+ return 1;
+
+error:
+ STRING_DEL(parser, string);
+ return 0;
+}
+
+/*
+ * Scan a TAG token.
+ */
+
+static int
+yaml_parser_scan_tag(yaml_parser_t *parser, yaml_token_t *token)
+{
+ yaml_char_t *handle = NULL;
+ yaml_char_t *suffix = NULL;
+ yaml_mark_t start_mark, end_mark;
+
+ start_mark = parser->mark;
+
+ /* Check if the tag is in the canonical form. */
+
+ if (!CACHE(parser, 2)) goto error;
+
+ if (CHECK_AT(parser->buffer, '<', 1))
+ {
+ /* Set the handle to '' */
+
+ handle = yaml_malloc(1);
+ if (!handle) goto error;
+ handle[0] = '\0';
+
+ /* Eat '!<' */
+
+ SKIP(parser);
+ SKIP(parser);
+
+ /* Consume the tag value. */
+
+ if (!yaml_parser_scan_tag_uri(parser, 0, NULL, start_mark, &suffix))
+ goto error;
+
+ /* Check for '>' and eat it. */
+
+ if (!CHECK(parser->buffer, '>')) {
+ yaml_parser_set_scanner_error(parser, "while scanning a tag",
+ start_mark, "did not find the expected '>'");
+ goto error;
+ }
+
+ SKIP(parser);
+ }
+ else
+ {
+ /* The tag has either the '!suffix' or the '!handle!suffix' form. */
+
+ /* First, try to scan a handle. */
+
+ if (!yaml_parser_scan_tag_handle(parser, 0, start_mark, &handle))
+ goto error;
+
+ /* Check if it is, indeed, handle. */
+
+ if (handle[0] == '!' && handle[1] != '\0' && handle[strlen((char *)handle)-1] == '!')
+ {
+ /* Scan the suffix now. */
+
+ if (!yaml_parser_scan_tag_uri(parser, 0, NULL, start_mark, &suffix))
+ goto error;
+ }
+ else
+ {
+ /* It wasn't a handle after all. Scan the rest of the tag. */
+
+ if (!yaml_parser_scan_tag_uri(parser, 0, handle, start_mark, &suffix))
+ goto error;
+
+ /* Set the handle to '!'. */
+
+ yaml_free(handle);
+ handle = yaml_malloc(2);
+ if (!handle) goto error;
+ handle[0] = '!';
+ handle[1] = '\0';
+
+ /*
+ * A special case: the '!' tag. Set the handle to '' and the
+ * suffix to '!'.
+ */
+
+ if (suffix[0] == '\0') {
+ yaml_char_t *tmp = handle;
+ handle = suffix;
+ suffix = tmp;
+ }
+ }
+ }
+
+ /* Check the character which ends the tag. */
+
+ if (!CACHE(parser, 1)) goto error;
+
+ if (!IS_BLANKZ(parser->buffer)) {
+ yaml_parser_set_scanner_error(parser, "while scanning a tag",
+ start_mark, "did not find expected whitespace or line break");
+ goto error;
+ }
+
+ end_mark = parser->mark;
+
+ /* Create a token. */
+
+ TAG_TOKEN_INIT(*token, handle, suffix, start_mark, end_mark);
+
+ return 1;
+
+error:
+ yaml_free(handle);
+ yaml_free(suffix);
+ return 0;
+}
+
+/*
+ * Scan a tag handle.
+ */
+
+static int
+yaml_parser_scan_tag_handle(yaml_parser_t *parser, int directive,
+ yaml_mark_t start_mark, yaml_char_t **handle)
+{
+ yaml_string_t string = NULL_STRING;
+
+ if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;
+
+ /* Check the initial '!' character. */
+
+ if (!CACHE(parser, 1)) goto error;
+
+ if (!CHECK(parser->buffer, '!')) {
+ yaml_parser_set_scanner_error(parser, directive ?
+ "while scanning a tag directive" : "while scanning a tag",
+ start_mark, "did not find expected '!'");
+ goto error;
+ }
+
+ /* Copy the '!' character. */
+
+ if (!READ(parser, string)) goto error;
+
+ /* Copy all subsequent alphabetical and numerical characters. */
+
+ if (!CACHE(parser, 1)) goto error;
+
+ while (IS_ALPHA(parser->buffer))
+ {
+ if (!READ(parser, string)) goto error;
+ if (!CACHE(parser, 1)) goto error;
+ }
+
+ /* Check if the trailing character is '!' and copy it. */
+
+ if (CHECK(parser->buffer, '!'))
+ {
+ if (!READ(parser, string)) goto error;
+ }
+ else
+ {
+ /*
+ * It's either the '!' tag or not really a tag handle. If it's a %TAG
+ * directive, it's an error. If it's a tag token, it must be a part of
+ * URI.
+ */
+
+ if (directive && !(string.start[0] == '!' && string.start[1] == '\0')) {
+ yaml_parser_set_scanner_error(parser, "while parsing a tag directive",
+ start_mark, "did not find expected '!'");
+ goto error;
+ }
+ }
+
+ *handle = string.start;
+
+ return 1;
+
+error:
+ STRING_DEL(parser, string);
+ return 0;
+}
+
+/*
+ * Scan a tag.
+ */
+
+static int
+yaml_parser_scan_tag_uri(yaml_parser_t *parser, int directive,
+ yaml_char_t *head, yaml_mark_t start_mark, yaml_char_t **uri)
+{
+ size_t length = head ? strlen((char *)head) : 0;
+ yaml_string_t string = NULL_STRING;
+
+ if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;
+
+ /* Resize the string to include the head. */
+
+ while ((size_t)(string.end - string.start) <= length) {
+ if (!yaml_string_extend(&string.start, &string.pointer, &string.end)) {
+ parser->error = YAML_MEMORY_ERROR;
+ goto error;
+ }
+ }
+
+ /*
+ * Copy the head if needed.
+ *
+ * Note that we don't copy the leading '!' character.
+ */
+
+ if (length > 1) {
+ memcpy(string.start, head+1, length-1);
+ string.pointer += length-1;
+ }
+
+ /* Scan the tag. */
+
+ if (!CACHE(parser, 1)) goto error;
+
+ /*
+ * The set of characters that may appear in URI is as follows:
+ *
+ * '0'-'9', 'A'-'Z', 'a'-'z', '_', '-', ';', '/', '?', ':', '@', '&',
+ * '=', '+', '$', ',', '.', '!', '~', '*', '\'', '(', ')', '[', ']',
+ * '%'.
+ */
+
+ while (IS_ALPHA(parser->buffer) || CHECK(parser->buffer, ';')
+ || CHECK(parser->buffer, '/') || CHECK(parser->buffer, '?')
+ || CHECK(parser->buffer, ':') || CHECK(parser->buffer, '@')
+ || CHECK(parser->buffer, '&') || CHECK(parser->buffer, '=')
+ || CHECK(parser->buffer, '+') || CHECK(parser->buffer, '$')
+ || CHECK(parser->buffer, ',') || CHECK(parser->buffer, '.')
+ || CHECK(parser->buffer, '!') || CHECK(parser->buffer, '~')
+ || CHECK(parser->buffer, '*') || CHECK(parser->buffer, '\'')
+ || CHECK(parser->buffer, '(') || CHECK(parser->buffer, ')')
+ || CHECK(parser->buffer, '[') || CHECK(parser->buffer, ']')
+ || CHECK(parser->buffer, '%'))
+ {
+ /* Check if it is a URI-escape sequence. */
+
+ if (CHECK(parser->buffer, '%')) {
+ if (!STRING_EXTEND(parser, string))
+ goto error;
+
+ if (!yaml_parser_scan_uri_escapes(parser,
+ directive, start_mark, &string)) goto error;
+ }
+ else {
+ if (!READ(parser, string)) goto error;
+ }
+
+ length ++;
+ if (!CACHE(parser, 1)) goto error;
+ }
+
+ /* Check if the tag is non-empty. */
+
+ if (!length) {
+ if (!STRING_EXTEND(parser, string))
+ goto error;
+
+ yaml_parser_set_scanner_error(parser, directive ?
+ "while parsing a %TAG directive" : "while parsing a tag",
+ start_mark, "did not find expected tag URI");
+ goto error;
+ }
+
+ *uri = string.start;
+
+ return 1;
+
+error:
+ STRING_DEL(parser, string);
+ return 0;
+}
+
+/*
+ * Decode an URI-escape sequence corresponding to a single UTF-8 character.
+ */
+
+static int
+yaml_parser_scan_uri_escapes(yaml_parser_t *parser, int directive,
+ yaml_mark_t start_mark, yaml_string_t *string)
+{
+ int width = 0;
+
+ /* Decode the required number of characters. */
+
+ do {
+
+ unsigned char octet = 0;
+
+ /* Check for a URI-escaped octet. */
+
+ if (!CACHE(parser, 3)) return 0;
+
+ if (!(CHECK(parser->buffer, '%')
+ && IS_HEX_AT(parser->buffer, 1)
+ && IS_HEX_AT(parser->buffer, 2))) {
+ return yaml_parser_set_scanner_error(parser, directive ?
+ "while parsing a %TAG directive" : "while parsing a tag",
+ start_mark, "did not find URI escaped octet");
+ }
+
+ /* Get the octet. */
+
+ octet = (AS_HEX_AT(parser->buffer, 1) << 4) + AS_HEX_AT(parser->buffer, 2);
+
+ /* If it is the leading octet, determine the length of the UTF-8 sequence. */
+
+ if (!width)
+ {
+ width = (octet & 0x80) == 0x00 ? 1 :
+ (octet & 0xE0) == 0xC0 ? 2 :
+ (octet & 0xF0) == 0xE0 ? 3 :
+ (octet & 0xF8) == 0xF0 ? 4 : 0;
+ if (!width) {
+ return yaml_parser_set_scanner_error(parser, directive ?
+ "while parsing a %TAG directive" : "while parsing a tag",
+ start_mark, "found an incorrect leading UTF-8 octet");
+ }
+ }
+ else
+ {
+ /* Check if the trailing octet is correct. */
+
+ if ((octet & 0xC0) != 0x80) {
+ return yaml_parser_set_scanner_error(parser, directive ?
+ "while parsing a %TAG directive" : "while parsing a tag",
+ start_mark, "found an incorrect trailing UTF-8 octet");
+ }
+ }
+
+ /* Copy the octet and move the pointers. */
+
+ *(string->pointer++) = octet;
+ SKIP(parser);
+ SKIP(parser);
+ SKIP(parser);
+
+ } while (--width);
+
+ return 1;
+}
+
+/*
+ * Scan a block scalar.
+ */
+
+static int
+yaml_parser_scan_block_scalar(yaml_parser_t *parser, yaml_token_t *token,
+ int literal)
+{
+ yaml_mark_t start_mark;
+ yaml_mark_t end_mark;
+ yaml_string_t string = NULL_STRING;
+ yaml_string_t leading_break = NULL_STRING;
+ yaml_string_t trailing_breaks = NULL_STRING;
+ int chomping = 0;
+ int increment = 0;
+ int indent = 0;
+ int leading_blank = 0;
+ int trailing_blank = 0;
+
+ if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;
+ if (!STRING_INIT(parser, leading_break, INITIAL_STRING_SIZE)) goto error;
+ if (!STRING_INIT(parser, trailing_breaks, INITIAL_STRING_SIZE)) goto error;
+
+ /* Eat the indicator '|' or '>'. */
+
+ start_mark = parser->mark;
+
+ SKIP(parser);
+
+ /* Scan the additional block scalar indicators. */
+
+ if (!CACHE(parser, 1)) goto error;
+
+ /* Check for a chomping indicator. */
+
+ if (CHECK(parser->buffer, '+') || CHECK(parser->buffer, '-'))
+ {
+ /* Set the chomping method and eat the indicator. */
+
+ chomping = CHECK(parser->buffer, '+') ? +1 : -1;
+
+ SKIP(parser);
+
+ /* Check for an indentation indicator. */
+
+ if (!CACHE(parser, 1)) goto error;
+
+ if (IS_DIGIT(parser->buffer))
+ {
+ /* Check that the intendation is greater than 0. */
+
+ if (CHECK(parser->buffer, '0')) {
+ yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
+ start_mark, "found an intendation indicator equal to 0");
+ goto error;
+ }
+
+ /* Get the intendation level and eat the indicator. */
+
+ increment = AS_DIGIT(parser->buffer);
+
+ SKIP(parser);
+ }
+ }
+
+ /* Do the same as above, but in the opposite order. */
+
+ else if (IS_DIGIT(parser->buffer))
+ {
+ if (CHECK(parser->buffer, '0')) {
+ yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
+ start_mark, "found an intendation indicator equal to 0");
+ goto error;
+ }
+
+ increment = AS_DIGIT(parser->buffer);
+
+ SKIP(parser);
+
+ if (!CACHE(parser, 1)) goto error;
+
+ if (CHECK(parser->buffer, '+') || CHECK(parser->buffer, '-')) {
+ chomping = CHECK(parser->buffer, '+') ? +1 : -1;
+
+ SKIP(parser);
+ }
+ }
+
+ /* Eat whitespaces and comments to the end of the line. */
+
+ if (!CACHE(parser, 1)) goto error;
+
+ while (IS_BLANK(parser->buffer)) {
+ SKIP(parser);
+ if (!CACHE(parser, 1)) goto error;
+ }
+
+ if (CHECK(parser->buffer, '#')) {
+ while (!IS_BREAKZ(parser->buffer)) {
+ SKIP(parser);
+ if (!CACHE(parser, 1)) goto error;
+ }
+ }
+
+ /* Check if we are at the end of the line. */
+
+ if (!IS_BREAKZ(parser->buffer)) {
+ yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
+ start_mark, "did not find expected comment or line break");
+ goto error;
+ }
+
+ /* Eat a line break. */
+
+ if (IS_BREAK(parser->buffer)) {
+ if (!CACHE(parser, 2)) goto error;
+ SKIP_LINE(parser);
+ }
+
+ end_mark = parser->mark;
+
+ /* Set the intendation level if it was specified. */
+
+ if (increment) {
+ indent = parser->indent >= 0 ? parser->indent+increment : increment;
+ }
+
+ /* Scan the leading line breaks and determine the indentation level if needed. */
+
+ if (!yaml_parser_scan_block_scalar_breaks(parser, &indent, &trailing_breaks,
+ start_mark, &end_mark)) goto error;
+
+ /* Scan the block scalar content. */
+
+ if (!CACHE(parser, 1)) goto error;
+
+ while ((int)parser->mark.column == indent && !IS_Z(parser->buffer))
+ {
+ /*
+ * We are at the beginning of a non-empty line.
+ */
+
+ /* Is it a trailing whitespace? */
+
+ trailing_blank = IS_BLANK(parser->buffer);
+
+ /* Check if we need to fold the leading line break. */
+
+ if (!literal && (*leading_break.start == '\n')
+ && !leading_blank && !trailing_blank)
+ {
+ /* Do we need to join the lines by space? */
+
+ if (*trailing_breaks.start == '\0') {
+ if (!STRING_EXTEND(parser, string)) goto error;
+ *(string.pointer ++) = ' ';
+ }
+
+ CLEAR(parser, leading_break);
+ }
+ else {
+ if (!JOIN(parser, string, leading_break)) goto error;
+ CLEAR(parser, leading_break);
+ }
+
+ /* Append the remaining line breaks. */
+
+ if (!JOIN(parser, string, trailing_breaks)) goto error;
+ CLEAR(parser, trailing_breaks);
+
+ /* Is it a leading whitespace? */
+
+ leading_blank = IS_BLANK(parser->buffer);
+
+ /* Consume the current line. */
+
+ while (!IS_BREAKZ(parser->buffer)) {
+ if (!READ(parser, string)) goto error;
+ if (!CACHE(parser, 1)) goto error;
+ }
+
+ /* Consume the line break. */
+
+ if (!CACHE(parser, 2)) goto error;
+
+ if (!READ_LINE(parser, leading_break)) goto error;
+
+ /* Eat the following intendation spaces and line breaks. */
+
+ if (!yaml_parser_scan_block_scalar_breaks(parser,
+ &indent, &trailing_breaks, start_mark, &end_mark)) goto error;
+ }
+
+ /* Chomp the tail. */
+
+ if (chomping != -1) {
+ if (!JOIN(parser, string, leading_break)) goto error;
+ }
+ if (chomping == 1) {
+ if (!JOIN(parser, string, trailing_breaks)) goto error;
+ }
+
+ /* Create a token. */
+
+ SCALAR_TOKEN_INIT(*token, string.start, string.pointer-string.start,
+ literal ? YAML_LITERAL_SCALAR_STYLE : YAML_FOLDED_SCALAR_STYLE,
+ start_mark, end_mark);
+
+ STRING_DEL(parser, leading_break);
+ STRING_DEL(parser, trailing_breaks);
+
+ return 1;
+
+error:
+ STRING_DEL(parser, string);
+ STRING_DEL(parser, leading_break);
+ STRING_DEL(parser, trailing_breaks);
+
+ return 0;
+}
+
+/*
+ * Scan intendation spaces and line breaks for a block scalar. Determine the
+ * intendation level if needed.
+ */
+
+static int
+yaml_parser_scan_block_scalar_breaks(yaml_parser_t *parser,
+ int *indent, yaml_string_t *breaks,
+ yaml_mark_t start_mark, yaml_mark_t *end_mark)
+{
+ int max_indent = 0;
+
+ *end_mark = parser->mark;
+
+ /* Eat the intendation spaces and line breaks. */
+
+ while (1)
+ {
+ /* Eat the intendation spaces. */
+
+ if (!CACHE(parser, 1)) return 0;
+
+ while ((!*indent || (int)parser->mark.column < *indent)
+ && IS_SPACE(parser->buffer)) {
+ SKIP(parser);
+ if (!CACHE(parser, 1)) return 0;
+ }
+
+ if ((int)parser->mark.column > max_indent)
+ max_indent = (int)parser->mark.column;
+
+ /* Check for a tab character messing the intendation. */
+
+ if ((!*indent || (int)parser->mark.column < *indent)
+ && IS_TAB(parser->buffer)) {
+ return yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
+ start_mark, "found a tab character where an intendation space is expected");
+ }
+
+ /* Have we found a non-empty line? */
+
+ if (!IS_BREAK(parser->buffer)) break;
+
+ /* Consume the line break. */
+
+ if (!CACHE(parser, 2)) return 0;
+ if (!READ_LINE(parser, *breaks)) return 0;
+ *end_mark = parser->mark;
+ }
+
+ /* Determine the indentation level if needed. */
+
+ if (!*indent) {
+ *indent = max_indent;
+ if (*indent < parser->indent + 1)
+ *indent = parser->indent + 1;
+ if (*indent < 1)
+ *indent = 1;
+ }
+
+ return 1;
+}
+
+/*
+ * Scan a quoted scalar.
+ */
+
+static int
+yaml_parser_scan_flow_scalar(yaml_parser_t *parser, yaml_token_t *token,
+ int single)
+{
+ yaml_mark_t start_mark;
+ yaml_mark_t end_mark;
+ yaml_string_t string = NULL_STRING;
+ yaml_string_t leading_break = NULL_STRING;
+ yaml_string_t trailing_breaks = NULL_STRING;
+ yaml_string_t whitespaces = NULL_STRING;
+ int leading_blanks;
+
+ if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;
+ if (!STRING_INIT(parser, leading_break, INITIAL_STRING_SIZE)) goto error;
+ if (!STRING_INIT(parser, trailing_breaks, INITIAL_STRING_SIZE)) goto error;
+ if (!STRING_INIT(parser, whitespaces, INITIAL_STRING_SIZE)) goto error;
+
+ /* Eat the left quote. */
+
+ start_mark = parser->mark;
+
+ SKIP(parser);
+
+ /* Consume the content of the quoted scalar. */
+
+ while (1)
+ {
+ /* Check that there are no document indicators at the beginning of the line. */
+
+ if (!CACHE(parser, 4)) goto error;
+
+ if (parser->mark.column == 0 &&
+ ((CHECK_AT(parser->buffer, '-', 0) &&
+ CHECK_AT(parser->buffer, '-', 1) &&
+ CHECK_AT(parser->buffer, '-', 2)) ||
+ (CHECK_AT(parser->buffer, '.', 0) &&
+ CHECK_AT(parser->buffer, '.', 1) &&
+ CHECK_AT(parser->buffer, '.', 2))) &&
+ IS_BLANKZ_AT(parser->buffer, 3))
+ {
+ yaml_parser_set_scanner_error(parser, "while scanning a quoted scalar",
+ start_mark, "found unexpected document indicator");
+ goto error;
+ }
+
+ /* Check for EOF. */
+
+ if (IS_Z(parser->buffer)) {
+ yaml_parser_set_scanner_error(parser, "while scanning a quoted scalar",
+ start_mark, "found unexpected end of stream");
+ goto error;
+ }
+
+ /* Consume non-blank characters. */
+
+ if (!CACHE(parser, 2)) goto error;
+
+ leading_blanks = 0;
+
+ while (!IS_BLANKZ(parser->buffer))
+ {
+ /* Check for an escaped single quote. */
+
+ if (single && CHECK_AT(parser->buffer, '\'', 0)
+ && CHECK_AT(parser->buffer, '\'', 1))
+ {
+ if (!STRING_EXTEND(parser, string)) goto error;
+ *(string.pointer++) = '\'';
+ SKIP(parser);
+ SKIP(parser);
+ }
+
+ /* Check for the right quote. */
+
+ else if (CHECK(parser->buffer, single ? '\'' : '"'))
+ {
+ break;
+ }
+
+ /* Check for an escaped line break. */
+
+ else if (!single && CHECK(parser->buffer, '\\')
+ && IS_BREAK_AT(parser->buffer, 1))
+ {
+ if (!CACHE(parser, 3)) goto error;
+ SKIP(parser);
+ SKIP_LINE(parser);
+ leading_blanks = 1;
+ break;
+ }
+
+ /* Check for an escape sequence. */
+
+ else if (!single && CHECK(parser->buffer, '\\'))
+ {
+ size_t code_length = 0;
+
+ if (!STRING_EXTEND(parser, string)) goto error;
+
+ /* Check the escape character. */
+
+ switch (parser->buffer.pointer[1])
+ {
+ case '0':
+ *(string.pointer++) = '\0';
+ break;
+
+ case 'a':
+ *(string.pointer++) = '\x07';
+ break;
+
+ case 'b':
+ *(string.pointer++) = '\x08';
+ break;
+
+ case 't':
+ case '\t':
+ *(string.pointer++) = '\x09';
+ break;
+
+ case 'n':
+ *(string.pointer++) = '\x0A';
+ break;
+
+ case 'v':
+ *(string.pointer++) = '\x0B';
+ break;
+
+ case 'f':
+ *(string.pointer++) = '\x0C';
+ break;
+
+ case 'r':
+ *(string.pointer++) = '\x0D';
+ break;
+
+ case 'e':
+ *(string.pointer++) = '\x1B';
+ break;
+
+ case ' ':
+ *(string.pointer++) = '\x20';
+ break;
+
+ case '"':
+ *(string.pointer++) = '"';
+ break;
+
+ case '\'':
+ *(string.pointer++) = '\'';
+ break;
+
+ case '\\':
+ *(string.pointer++) = '\\';
+ break;
+
+ case 'N': /* NEL (#x85) */
+ *(string.pointer++) = '\xC2';
+ *(string.pointer++) = '\x85';
+ break;
+
+ case '_': /* #xA0 */
+ *(string.pointer++) = '\xC2';
+ *(string.pointer++) = '\xA0';
+ break;
+
+ case 'L': /* LS (#x2028) */
+ *(string.pointer++) = '\xE2';
+ *(string.pointer++) = '\x80';
+ *(string.pointer++) = '\xA8';
+ break;
+
+ case 'P': /* PS (#x2029) */
+ *(string.pointer++) = '\xE2';
+ *(string.pointer++) = '\x80';
+ *(string.pointer++) = '\xA9';
+ break;
+
+ case 'x':
+ code_length = 2;
+ break;
+
+ case 'u':
+ code_length = 4;
+ break;
+
+ case 'U':
+ code_length = 8;
+ break;
+
+ default:
+ yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar",
+ start_mark, "found unknown escape character");
+ goto error;
+ }
+
+ SKIP(parser);
+ SKIP(parser);
+
+ /* Consume an arbitrary escape code. */
+
+ if (code_length)
+ {
+ unsigned int value = 0;
+ size_t k;
+
+ /* Scan the character value. */
+
+ if (!CACHE(parser, code_length)) goto error;
+
+ for (k = 0; k < code_length; k ++) {
+ if (!IS_HEX_AT(parser->buffer, k)) {
+ yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar",
+ start_mark, "did not find expected hexdecimal number");
+ goto error;
+ }
+ value = (value << 4) + AS_HEX_AT(parser->buffer, k);
+ }
+
+ /* Check the value and write the character. */
+
+ if ((value >= 0xD800 && value <= 0xDFFF) || value > 0x10FFFF) {
+ yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar",
+ start_mark, "found invalid Unicode character escape code");
+ goto error;
+ }
+
+ if (value <= 0x7F) {
+ *(string.pointer++) = value;
+ }
+ else if (value <= 0x7FF) {
+ *(string.pointer++) = 0xC0 + (value >> 6);
+ *(string.pointer++) = 0x80 + (value & 0x3F);
+ }
+ else if (value <= 0xFFFF) {
+ *(string.pointer++) = 0xE0 + (value >> 12);
+ *(string.pointer++) = 0x80 + ((value >> 6) & 0x3F);
+ *(string.pointer++) = 0x80 + (value & 0x3F);
+ }
+ else {
+ *(string.pointer++) = 0xF0 + (value >> 18);
+ *(string.pointer++) = 0x80 + ((value >> 12) & 0x3F);
+ *(string.pointer++) = 0x80 + ((value >> 6) & 0x3F);
+ *(string.pointer++) = 0x80 + (value & 0x3F);
+ }
+
+ /* Advance the pointer. */
+
+ for (k = 0; k < code_length; k ++) {
+ SKIP(parser);
+ }
+ }
+ }
+
+ else
+ {
+ /* It is a non-escaped non-blank character. */
+
+ if (!READ(parser, string)) goto error;
+ }
+
+ if (!CACHE(parser, 2)) goto error;
+ }
+
+ /* Check if we are at the end of the scalar. */
+
+ if (CHECK(parser->buffer, single ? '\'' : '"'))
+ break;
+
+ /* Consume blank characters. */
+
+ if (!CACHE(parser, 1)) goto error;
+
+ while (IS_BLANK(parser->buffer) || IS_BREAK(parser->buffer))
+ {
+ if (IS_BLANK(parser->buffer))
+ {
+ /* Consume a space or a tab character. */
+
+ if (!leading_blanks) {
+ if (!READ(parser, whitespaces)) goto error;
+ }
+ else {
+ SKIP(parser);
+ }
+ }
+ else
+ {
+ if (!CACHE(parser, 2)) goto error;
+
+ /* Check if it is a first line break. */
+
+ if (!leading_blanks)
+ {
+ CLEAR(parser, whitespaces);
+ if (!READ_LINE(parser, leading_break)) goto error;
+ leading_blanks = 1;
+ }
+ else
+ {
+ if (!READ_LINE(parser, trailing_breaks)) goto error;
+ }
+ }
+ if (!CACHE(parser, 1)) goto error;
+ }
+
+ /* Join the whitespaces or fold line breaks. */
+
+ if (leading_blanks)
+ {
+ /* Do we need to fold line breaks? */
+
+ if (leading_break.start[0] == '\n') {
+ if (trailing_breaks.start[0] == '\0') {
+ if (!STRING_EXTEND(parser, string)) goto error;
+ *(string.pointer++) = ' ';
+ }
+ else {
+ if (!JOIN(parser, string, trailing_breaks)) goto error;
+ CLEAR(parser, trailing_breaks);
+ }
+ CLEAR(parser, leading_break);
+ }
+ else {
+ if (!JOIN(parser, string, leading_break)) goto error;
+ if (!JOIN(parser, string, trailing_breaks)) goto error;
+ CLEAR(parser, leading_break);
+ CLEAR(parser, trailing_breaks);
+ }
+ }
+ else
+ {
+ if (!JOIN(parser, string, whitespaces)) goto error;
+ CLEAR(parser, whitespaces);
+ }
+ }
+
+ /* Eat the right quote. */
+
+ SKIP(parser);
+
+ end_mark = parser->mark;
+
+ /* Create a token. */
+
+ SCALAR_TOKEN_INIT(*token, string.start, string.pointer-string.start,
+ single ? YAML_SINGLE_QUOTED_SCALAR_STYLE : YAML_DOUBLE_QUOTED_SCALAR_STYLE,
+ start_mark, end_mark);
+
+ STRING_DEL(parser, leading_break);
+ STRING_DEL(parser, trailing_breaks);
+ STRING_DEL(parser, whitespaces);
+
+ return 1;
+
+error:
+ STRING_DEL(parser, string);
+ STRING_DEL(parser, leading_break);
+ STRING_DEL(parser, trailing_breaks);
+ STRING_DEL(parser, whitespaces);
+
+ return 0;
+}
+
+/*
+ * Scan a plain scalar.
+ */
+
+static int
+yaml_parser_scan_plain_scalar(yaml_parser_t *parser, yaml_token_t *token)
+{
+ yaml_mark_t start_mark;
+ yaml_mark_t end_mark;
+ yaml_string_t string = NULL_STRING;
+ yaml_string_t leading_break = NULL_STRING;
+ yaml_string_t trailing_breaks = NULL_STRING;
+ yaml_string_t whitespaces = NULL_STRING;
+ int leading_blanks = 0;
+ int indent = parser->indent+1;
+
+ if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error;
+ if (!STRING_INIT(parser, leading_break, INITIAL_STRING_SIZE)) goto error;
+ if (!STRING_INIT(parser, trailing_breaks, INITIAL_STRING_SIZE)) goto error;
+ if (!STRING_INIT(parser, whitespaces, INITIAL_STRING_SIZE)) goto error;
+
+ start_mark = end_mark = parser->mark;
+
+ /* Consume the content of the plain scalar. */
+
+ while (1)
+ {
+ /* Check for a document indicator. */
+
+ if (!CACHE(parser, 4)) goto error;
+
+ if (parser->mark.column == 0 &&
+ ((CHECK_AT(parser->buffer, '-', 0) &&
+ CHECK_AT(parser->buffer, '-', 1) &&
+ CHECK_AT(parser->buffer, '-', 2)) ||
+ (CHECK_AT(parser->buffer, '.', 0) &&
+ CHECK_AT(parser->buffer, '.', 1) &&
+ CHECK_AT(parser->buffer, '.', 2))) &&
+ IS_BLANKZ_AT(parser->buffer, 3)) break;
+
+ /* Check for a comment. */
+
+ if (CHECK(parser->buffer, '#'))
+ break;
+
+ /* Consume non-blank characters. */
+
+ while (!IS_BLANKZ(parser->buffer))
+ {
+ /* Check for 'x:x' in the flow context. TODO: Fix the test "spec-08-13". */
+
+ if (parser->flow_level
+ && CHECK(parser->buffer, ':')
+ && !IS_BLANKZ_AT(parser->buffer, 1)) {
+ yaml_parser_set_scanner_error(parser, "while scanning a plain scalar",
+ start_mark, "found unexpected ':'");
+ goto error;
+ }
+
+ /* Check for indicators that may end a plain scalar. */
+
+ if ((CHECK(parser->buffer, ':') && IS_BLANKZ_AT(parser->buffer, 1))
+ || (parser->flow_level &&
+ (CHECK(parser->buffer, ',') || CHECK(parser->buffer, ':')
+ || CHECK(parser->buffer, '?') || CHECK(parser->buffer, '[')
+ || CHECK(parser->buffer, ']') || CHECK(parser->buffer, '{')
+ || CHECK(parser->buffer, '}'))))
+ break;
+
+ /* Check if we need to join whitespaces and breaks. */
+
+ if (leading_blanks || whitespaces.start != whitespaces.pointer)
+ {
+ if (leading_blanks)
+ {
+ /* Do we need to fold line breaks? */
+
+ if (leading_break.start[0] == '\n') {
+ if (trailing_breaks.start[0] == '\0') {
+ if (!STRING_EXTEND(parser, string)) goto error;
+ *(string.pointer++) = ' ';
+ }
+ else {
+ if (!JOIN(parser, string, trailing_breaks)) goto error;
+ CLEAR(parser, trailing_breaks);
+ }
+ CLEAR(parser, leading_break);
+ }
+ else {
+ if (!JOIN(parser, string, leading_break)) goto error;
+ if (!JOIN(parser, string, trailing_breaks)) goto error;
+ CLEAR(parser, leading_break);
+ CLEAR(parser, trailing_breaks);
+ }
+
+ leading_blanks = 0;
+ }
+ else
+ {
+ if (!JOIN(parser, string, whitespaces)) goto error;
+ CLEAR(parser, whitespaces);
+ }
+ }
+
+ /* Copy the character. */
+
+ if (!READ(parser, string)) goto error;
+
+ end_mark = parser->mark;
+
+ if (!CACHE(parser, 2)) goto error;
+ }
+
+ /* Is it the end? */
+
+ if (!(IS_BLANK(parser->buffer) || IS_BREAK(parser->buffer)))
+ break;
+
+ /* Consume blank characters. */
+
+ if (!CACHE(parser, 1)) goto error;
+
+ while (IS_BLANK(parser->buffer) || IS_BREAK(parser->buffer))
+ {
+ if (IS_BLANK(parser->buffer))
+ {
+ /* Check for tab character that abuse intendation. */
+
+ if (leading_blanks && (int)parser->mark.column < indent
+ && IS_TAB(parser->buffer)) {
+ yaml_parser_set_scanner_error(parser, "while scanning a plain scalar",
+ start_mark, "found a tab character that violate intendation");
+ goto error;
+ }
+
+ /* Consume a space or a tab character. */
+
+ if (!leading_blanks) {
+ if (!READ(parser, whitespaces)) goto error;
+ }
+ else {
+ SKIP(parser);
+ }
+ }
+ else
+ {
+ if (!CACHE(parser, 2)) goto error;
+
+ /* Check if it is a first line break. */
+
+ if (!leading_blanks)
+ {
+ CLEAR(parser, whitespaces);
+ if (!READ_LINE(parser, leading_break)) goto error;
+ leading_blanks = 1;
+ }
+ else
+ {
+ if (!READ_LINE(parser, trailing_breaks)) goto error;
+ }
+ }
+ if (!CACHE(parser, 1)) goto error;
+ }
+
+ /* Check intendation level. */
+
+ if (!parser->flow_level && (int)parser->mark.column < indent)
+ break;
+ }
+
+ /* Create a token. */
+
+ SCALAR_TOKEN_INIT(*token, string.start, string.pointer-string.start,
+ YAML_PLAIN_SCALAR_STYLE, start_mark, end_mark);
+
+ /* Note that we change the 'simple_key_allowed' flag. */
+
+ if (leading_blanks) {
+ parser->simple_key_allowed = 1;
+ }
+
+ STRING_DEL(parser, leading_break);
+ STRING_DEL(parser, trailing_breaks);
+ STRING_DEL(parser, whitespaces);
+
+ return 1;
+
+error:
+ STRING_DEL(parser, string);
+ STRING_DEL(parser, leading_break);
+ STRING_DEL(parser, trailing_breaks);
+ STRING_DEL(parser, whitespaces);
+
+ return 0;
+}
+
diff --git a/jni/ruby/ext/psych/yaml/writer.c b/jni/ruby/ext/psych/yaml/writer.c
new file mode 100644
index 0000000..5d57f39
--- /dev/null
+++ b/jni/ruby/ext/psych/yaml/writer.c
@@ -0,0 +1,141 @@
+
+#include "yaml_private.h"
+
+/*
+ * Declarations.
+ */
+
+static int
+yaml_emitter_set_writer_error(yaml_emitter_t *emitter, const char *problem);
+
+YAML_DECLARE(int)
+yaml_emitter_flush(yaml_emitter_t *emitter);
+
+/*
+ * Set the writer error and return 0.
+ */
+
+static int
+yaml_emitter_set_writer_error(yaml_emitter_t *emitter, const char *problem)
+{
+ emitter->error = YAML_WRITER_ERROR;
+ emitter->problem = problem;
+
+ return 0;
+}
+
+/*
+ * Flush the output buffer.
+ */
+
+YAML_DECLARE(int)
+yaml_emitter_flush(yaml_emitter_t *emitter)
+{
+ int low, high;
+
+ assert(emitter); /* Non-NULL emitter object is expected. */
+ assert(emitter->write_handler); /* Write handler must be set. */
+ assert(emitter->encoding); /* Output encoding must be set. */
+
+ emitter->buffer.last = emitter->buffer.pointer;
+ emitter->buffer.pointer = emitter->buffer.start;
+
+ /* Check if the buffer is empty. */
+
+ if (emitter->buffer.start == emitter->buffer.last) {
+ return 1;
+ }
+
+ /* If the output encoding is UTF-8, we don't need to recode the buffer. */
+
+ if (emitter->encoding == YAML_UTF8_ENCODING)
+ {
+ if (emitter->write_handler(emitter->write_handler_data,
+ emitter->buffer.start,
+ emitter->buffer.last - emitter->buffer.start)) {
+ emitter->buffer.last = emitter->buffer.start;
+ emitter->buffer.pointer = emitter->buffer.start;
+ return 1;
+ }
+ else {
+ return yaml_emitter_set_writer_error(emitter, "write error");
+ }
+ }
+
+ /* Recode the buffer into the raw buffer. */
+
+ low = (emitter->encoding == YAML_UTF16LE_ENCODING ? 0 : 1);
+ high = (emitter->encoding == YAML_UTF16LE_ENCODING ? 1 : 0);
+
+ while (emitter->buffer.pointer != emitter->buffer.last)
+ {
+ unsigned char octet;
+ unsigned int width;
+ unsigned int value;
+ size_t k;
+
+ /*
+ * See the "reader.c" code for more details on UTF-8 encoding. Note
+ * that we assume that the buffer contains a valid UTF-8 sequence.
+ */
+
+ /* Read the next UTF-8 character. */
+
+ octet = emitter->buffer.pointer[0];
+
+ width = (octet & 0x80) == 0x00 ? 1 :
+ (octet & 0xE0) == 0xC0 ? 2 :
+ (octet & 0xF0) == 0xE0 ? 3 :
+ (octet & 0xF8) == 0xF0 ? 4 : 0;
+
+ value = (octet & 0x80) == 0x00 ? octet & 0x7F :
+ (octet & 0xE0) == 0xC0 ? octet & 0x1F :
+ (octet & 0xF0) == 0xE0 ? octet & 0x0F :
+ (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;
+
+ for (k = 1; k < width; k ++) {
+ octet = emitter->buffer.pointer[k];
+ value = (value << 6) + (octet & 0x3F);
+ }
+
+ emitter->buffer.pointer += width;
+
+ /* Write the character. */
+
+ if (value < 0x10000)
+ {
+ emitter->raw_buffer.last[high] = value >> 8;
+ emitter->raw_buffer.last[low] = value & 0xFF;
+
+ emitter->raw_buffer.last += 2;
+ }
+ else
+ {
+ /* Write the character using a surrogate pair (check "reader.c"). */
+
+ value -= 0x10000;
+ emitter->raw_buffer.last[high] = 0xD8 + (value >> 18);
+ emitter->raw_buffer.last[low] = (value >> 10) & 0xFF;
+ emitter->raw_buffer.last[high+2] = 0xDC + ((value >> 8) & 0xFF);
+ emitter->raw_buffer.last[low+2] = value & 0xFF;
+
+ emitter->raw_buffer.last += 4;
+ }
+ }
+
+ /* Write the raw buffer. */
+
+ if (emitter->write_handler(emitter->write_handler_data,
+ emitter->raw_buffer.start,
+ emitter->raw_buffer.last - emitter->raw_buffer.start)) {
+ emitter->buffer.last = emitter->buffer.start;
+ emitter->buffer.pointer = emitter->buffer.start;
+ emitter->raw_buffer.last = emitter->raw_buffer.start;
+ emitter->raw_buffer.pointer = emitter->raw_buffer.start;
+ return 1;
+ }
+ else {
+ return yaml_emitter_set_writer_error(emitter, "write error");
+ }
+}
+
diff --git a/jni/ruby/ext/psych/yaml/yaml.h b/jni/ruby/ext/psych/yaml/yaml.h
new file mode 100644
index 0000000..f33a152
--- /dev/null
+++ b/jni/ruby/ext/psych/yaml/yaml.h
@@ -0,0 +1,1971 @@
+/**
+ * @file yaml.h
+ * @brief Public interface for libyaml.
+ *
+ * Include the header file with the code:
+ * @code
+ * #include <yaml.h>
+ * @endcode
+ */
+
+#ifndef YAML_H
+#define YAML_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+/**
+ * @defgroup export Export Definitions
+ * @{
+ */
+
+/** The public API declaration. */
+
+#ifdef _WIN32
+# if defined(YAML_DECLARE_STATIC)
+# define YAML_DECLARE(type) type
+# elif defined(YAML_DECLARE_EXPORT)
+# define YAML_DECLARE(type) __declspec(dllexport) type
+# else
+# define YAML_DECLARE(type) __declspec(dllimport) type
+# endif
+#else
+# define YAML_DECLARE(type) type
+#endif
+
+/** @} */
+
+/**
+ * @defgroup version Version Information
+ * @{
+ */
+
+/**
+ * Get the library version as a string.
+ *
+ * @returns The function returns the pointer to a static string of the form
+ * @c "X.Y.Z", where @c X is the major version number, @c Y is a minor version
+ * number, and @c Z is the patch version number.
+ */
+
+YAML_DECLARE(const char *)
+yaml_get_version_string(void);
+
+/**
+ * Get the library version numbers.
+ *
+ * @param[out] major Major version number.
+ * @param[out] minor Minor version number.
+ * @param[out] patch Patch version number.
+ */
+
+YAML_DECLARE(void)
+yaml_get_version(int *major, int *minor, int *patch);
+
+/** @} */
+
+/**
+ * @defgroup basic Basic Types
+ * @{
+ */
+
+/** The character type (UTF-8 octet). */
+typedef unsigned char yaml_char_t;
+
+/** The version directive data. */
+typedef struct yaml_version_directive_s {
+ /** The major version number. */
+ int major;
+ /** The minor version number. */
+ int minor;
+} yaml_version_directive_t;
+
+/** The tag directive data. */
+typedef struct yaml_tag_directive_s {
+ /** The tag handle. */
+ yaml_char_t *handle;
+ /** The tag prefix. */
+ yaml_char_t *prefix;
+} yaml_tag_directive_t;
+
+/** The stream encoding. */
+typedef enum yaml_encoding_e {
+ /** Let the parser choose the encoding. */
+ YAML_ANY_ENCODING,
+ /** The default UTF-8 encoding. */
+ YAML_UTF8_ENCODING,
+ /** The UTF-16-LE encoding with BOM. */
+ YAML_UTF16LE_ENCODING,
+ /** The UTF-16-BE encoding with BOM. */
+ YAML_UTF16BE_ENCODING
+} yaml_encoding_t;
+
+/** Line break types. */
+
+typedef enum yaml_break_e {
+ /** Let the parser choose the break type. */
+ YAML_ANY_BREAK,
+ /** Use CR for line breaks (Mac style). */
+ YAML_CR_BREAK,
+ /** Use LN for line breaks (Unix style). */
+ YAML_LN_BREAK,
+ /** Use CR LN for line breaks (DOS style). */
+ YAML_CRLN_BREAK
+} yaml_break_t;
+
+/** Many bad things could happen with the parser and emitter. */
+typedef enum yaml_error_type_e {
+ /** No error is produced. */
+ YAML_NO_ERROR,
+
+ /** Cannot allocate or reallocate a block of memory. */
+ YAML_MEMORY_ERROR,
+
+ /** Cannot read or decode the input stream. */
+ YAML_READER_ERROR,
+ /** Cannot scan the input stream. */
+ YAML_SCANNER_ERROR,
+ /** Cannot parse the input stream. */
+ YAML_PARSER_ERROR,
+ /** Cannot compose a YAML document. */
+ YAML_COMPOSER_ERROR,
+
+ /** Cannot write to the output stream. */
+ YAML_WRITER_ERROR,
+ /** Cannot emit a YAML stream. */
+ YAML_EMITTER_ERROR
+} yaml_error_type_t;
+
+/** The pointer position. */
+typedef struct yaml_mark_s {
+ /** The position index. */
+ size_t index;
+
+ /** The position line. */
+ size_t line;
+
+ /** The position column. */
+ size_t column;
+} yaml_mark_t;
+
+/** @} */
+
+/**
+ * @defgroup styles Node Styles
+ * @{
+ */
+
+/** Scalar styles. */
+typedef enum yaml_scalar_style_e {
+ /** Let the emitter choose the style. */
+ YAML_ANY_SCALAR_STYLE,
+
+ /** The plain scalar style. */
+ YAML_PLAIN_SCALAR_STYLE,
+
+ /** The single-quoted scalar style. */
+ YAML_SINGLE_QUOTED_SCALAR_STYLE,
+ /** The double-quoted scalar style. */
+ YAML_DOUBLE_QUOTED_SCALAR_STYLE,
+
+ /** The literal scalar style. */
+ YAML_LITERAL_SCALAR_STYLE,
+ /** The folded scalar style. */
+ YAML_FOLDED_SCALAR_STYLE
+} yaml_scalar_style_t;
+
+/** Sequence styles. */
+typedef enum yaml_sequence_style_e {
+ /** Let the emitter choose the style. */
+ YAML_ANY_SEQUENCE_STYLE,
+
+ /** The block sequence style. */
+ YAML_BLOCK_SEQUENCE_STYLE,
+ /** The flow sequence style. */
+ YAML_FLOW_SEQUENCE_STYLE
+} yaml_sequence_style_t;
+
+/** Mapping styles. */
+typedef enum yaml_mapping_style_e {
+ /** Let the emitter choose the style. */
+ YAML_ANY_MAPPING_STYLE,
+
+ /** The block mapping style. */
+ YAML_BLOCK_MAPPING_STYLE,
+ /** The flow mapping style. */
+ YAML_FLOW_MAPPING_STYLE
+/* YAML_FLOW_SET_MAPPING_STYLE */
+} yaml_mapping_style_t;
+
+/** @} */
+
+/**
+ * @defgroup tokens Tokens
+ * @{
+ */
+
+/** Token types. */
+typedef enum yaml_token_type_e {
+ /** An empty token. */
+ YAML_NO_TOKEN,
+
+ /** A STREAM-START token. */
+ YAML_STREAM_START_TOKEN,
+ /** A STREAM-END token. */
+ YAML_STREAM_END_TOKEN,
+
+ /** A VERSION-DIRECTIVE token. */
+ YAML_VERSION_DIRECTIVE_TOKEN,
+ /** A TAG-DIRECTIVE token. */
+ YAML_TAG_DIRECTIVE_TOKEN,
+ /** A DOCUMENT-START token. */
+ YAML_DOCUMENT_START_TOKEN,
+ /** A DOCUMENT-END token. */
+ YAML_DOCUMENT_END_TOKEN,
+
+ /** A BLOCK-SEQUENCE-START token. */
+ YAML_BLOCK_SEQUENCE_START_TOKEN,
+ /** A BLOCK-SEQUENCE-END token. */
+ YAML_BLOCK_MAPPING_START_TOKEN,
+ /** A BLOCK-END token. */
+ YAML_BLOCK_END_TOKEN,
+
+ /** A FLOW-SEQUENCE-START token. */
+ YAML_FLOW_SEQUENCE_START_TOKEN,
+ /** A FLOW-SEQUENCE-END token. */
+ YAML_FLOW_SEQUENCE_END_TOKEN,
+ /** A FLOW-MAPPING-START token. */
+ YAML_FLOW_MAPPING_START_TOKEN,
+ /** A FLOW-MAPPING-END token. */
+ YAML_FLOW_MAPPING_END_TOKEN,
+
+ /** A BLOCK-ENTRY token. */
+ YAML_BLOCK_ENTRY_TOKEN,
+ /** A FLOW-ENTRY token. */
+ YAML_FLOW_ENTRY_TOKEN,
+ /** A KEY token. */
+ YAML_KEY_TOKEN,
+ /** A VALUE token. */
+ YAML_VALUE_TOKEN,
+
+ /** An ALIAS token. */
+ YAML_ALIAS_TOKEN,
+ /** An ANCHOR token. */
+ YAML_ANCHOR_TOKEN,
+ /** A TAG token. */
+ YAML_TAG_TOKEN,
+ /** A SCALAR token. */
+ YAML_SCALAR_TOKEN
+} yaml_token_type_t;
+
+/** The token structure. */
+typedef struct yaml_token_s {
+
+ /** The token type. */
+ yaml_token_type_t type;
+
+ /** The token data. */
+ union {
+
+ /** The stream start (for @c YAML_STREAM_START_TOKEN). */
+ struct {
+ /** The stream encoding. */
+ yaml_encoding_t encoding;
+ } stream_start;
+
+ /** The alias (for @c YAML_ALIAS_TOKEN). */
+ struct {
+ /** The alias value. */
+ yaml_char_t *value;
+ } alias;
+
+ /** The anchor (for @c YAML_ANCHOR_TOKEN). */
+ struct {
+ /** The anchor value. */
+ yaml_char_t *value;
+ } anchor;
+
+ /** The tag (for @c YAML_TAG_TOKEN). */
+ struct {
+ /** The tag handle. */
+ yaml_char_t *handle;
+ /** The tag suffix. */
+ yaml_char_t *suffix;
+ } tag;
+
+ /** The scalar value (for @c YAML_SCALAR_TOKEN). */
+ struct {
+ /** The scalar value. */
+ yaml_char_t *value;
+ /** The length of the scalar value. */
+ size_t length;
+ /** The scalar style. */
+ yaml_scalar_style_t style;
+ } scalar;
+
+ /** The version directive (for @c YAML_VERSION_DIRECTIVE_TOKEN). */
+ struct {
+ /** The major version number. */
+ int major;
+ /** The minor version number. */
+ int minor;
+ } version_directive;
+
+ /** The tag directive (for @c YAML_TAG_DIRECTIVE_TOKEN). */
+ struct {
+ /** The tag handle. */
+ yaml_char_t *handle;
+ /** The tag prefix. */
+ yaml_char_t *prefix;
+ } tag_directive;
+
+ } data;
+
+ /** The beginning of the token. */
+ yaml_mark_t start_mark;
+ /** The end of the token. */
+ yaml_mark_t end_mark;
+
+} yaml_token_t;
+
+/**
+ * Free any memory allocated for a token object.
+ *
+ * @param[in,out] token A token object.
+ */
+
+YAML_DECLARE(void)
+yaml_token_delete(yaml_token_t *token);
+
+/** @} */
+
+/**
+ * @defgroup events Events
+ * @{
+ */
+
+/** Event types. */
+typedef enum yaml_event_type_e {
+ /** An empty event. */
+ YAML_NO_EVENT,
+
+ /** A STREAM-START event. */
+ YAML_STREAM_START_EVENT,
+ /** A STREAM-END event. */
+ YAML_STREAM_END_EVENT,
+
+ /** A DOCUMENT-START event. */
+ YAML_DOCUMENT_START_EVENT,
+ /** A DOCUMENT-END event. */
+ YAML_DOCUMENT_END_EVENT,
+
+ /** An ALIAS event. */
+ YAML_ALIAS_EVENT,
+ /** A SCALAR event. */
+ YAML_SCALAR_EVENT,
+
+ /** A SEQUENCE-START event. */
+ YAML_SEQUENCE_START_EVENT,
+ /** A SEQUENCE-END event. */
+ YAML_SEQUENCE_END_EVENT,
+
+ /** A MAPPING-START event. */
+ YAML_MAPPING_START_EVENT,
+ /** A MAPPING-END event. */
+ YAML_MAPPING_END_EVENT
+} yaml_event_type_t;
+
+/** The event structure. */
+typedef struct yaml_event_s {
+
+ /** The event type. */
+ yaml_event_type_t type;
+
+ /** The event data. */
+ union {
+
+ /** The stream parameters (for @c YAML_STREAM_START_EVENT). */
+ struct {
+ /** The document encoding. */
+ yaml_encoding_t encoding;
+ } stream_start;
+
+ /** The document parameters (for @c YAML_DOCUMENT_START_EVENT). */
+ struct {
+ /** The version directive. */
+ yaml_version_directive_t *version_directive;
+
+ /** The list of tag directives. */
+ struct {
+ /** The beginning of the tag directives list. */
+ yaml_tag_directive_t *start;
+ /** The end of the tag directives list. */
+ yaml_tag_directive_t *end;
+ } tag_directives;
+
+ /** Is the document indicator implicit? */
+ int implicit;
+ } document_start;
+
+ /** The document end parameters (for @c YAML_DOCUMENT_END_EVENT). */
+ struct {
+ /** Is the document end indicator implicit? */
+ int implicit;
+ } document_end;
+
+ /** The alias parameters (for @c YAML_ALIAS_EVENT). */
+ struct {
+ /** The anchor. */
+ yaml_char_t *anchor;
+ } alias;
+
+ /** The scalar parameters (for @c YAML_SCALAR_EVENT). */
+ struct {
+ /** The anchor. */
+ yaml_char_t *anchor;
+ /** The tag. */
+ yaml_char_t *tag;
+ /** The scalar value. */
+ yaml_char_t *value;
+ /** The length of the scalar value. */
+ size_t length;
+ /** Is the tag optional for the plain style? */
+ int plain_implicit;
+ /** Is the tag optional for any non-plain style? */
+ int quoted_implicit;
+ /** The scalar style. */
+ yaml_scalar_style_t style;
+ } scalar;
+
+ /** The sequence parameters (for @c YAML_SEQUENCE_START_EVENT). */
+ struct {
+ /** The anchor. */
+ yaml_char_t *anchor;
+ /** The tag. */
+ yaml_char_t *tag;
+ /** Is the tag optional? */
+ int implicit;
+ /** The sequence style. */
+ yaml_sequence_style_t style;
+ } sequence_start;
+
+ /** The mapping parameters (for @c YAML_MAPPING_START_EVENT). */
+ struct {
+ /** The anchor. */
+ yaml_char_t *anchor;
+ /** The tag. */
+ yaml_char_t *tag;
+ /** Is the tag optional? */
+ int implicit;
+ /** The mapping style. */
+ yaml_mapping_style_t style;
+ } mapping_start;
+
+ } data;
+
+ /** The beginning of the event. */
+ yaml_mark_t start_mark;
+ /** The end of the event. */
+ yaml_mark_t end_mark;
+
+} yaml_event_t;
+
+/**
+ * Create the STREAM-START event.
+ *
+ * @param[out] event An empty event object.
+ * @param[in] encoding The stream encoding.
+ *
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_stream_start_event_initialize(yaml_event_t *event,
+ yaml_encoding_t encoding);
+
+/**
+ * Create the STREAM-END event.
+ *
+ * @param[out] event An empty event object.
+ *
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_stream_end_event_initialize(yaml_event_t *event);
+
+/**
+ * Create the DOCUMENT-START event.
+ *
+ * The @a implicit argument is considered as a stylistic parameter and may be
+ * ignored by the emitter.
+ *
+ * @param[out] event An empty event object.
+ * @param[in] version_directive The %YAML directive value or
+ * @c NULL.
+ * @param[in] tag_directives_start The beginning of the %TAG
+ * directives list.
+ * @param[in] tag_directives_end The end of the %TAG directives
+ * list.
+ * @param[in] implicit If the document start indicator is
+ * implicit.
+ *
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_document_start_event_initialize(yaml_event_t *event,
+ yaml_version_directive_t *version_directive,
+ yaml_tag_directive_t *tag_directives_start,
+ yaml_tag_directive_t *tag_directives_end,
+ int implicit);
+
+/**
+ * Create the DOCUMENT-END event.
+ *
+ * The @a implicit argument is considered as a stylistic parameter and may be
+ * ignored by the emitter.
+ *
+ * @param[out] event An empty event object.
+ * @param[in] implicit If the document end indicator is implicit.
+ *
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_document_end_event_initialize(yaml_event_t *event, int implicit);
+
+/**
+ * Create an ALIAS event.
+ *
+ * @param[out] event An empty event object.
+ * @param[in] anchor The anchor value.
+ *
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_alias_event_initialize(yaml_event_t *event, yaml_char_t *anchor);
+
+/**
+ * Create a SCALAR event.
+ *
+ * The @a style argument may be ignored by the emitter.
+ *
+ * Either the @a tag attribute or one of the @a plain_implicit and
+ * @a quoted_implicit flags must be set.
+ *
+ * @param[out] event An empty event object.
+ * @param[in] anchor The scalar anchor or @c NULL.
+ * @param[in] tag The scalar tag or @c NULL.
+ * @param[in] value The scalar value.
+ * @param[in] length The length of the scalar value.
+ * @param[in] plain_implicit If the tag may be omitted for the plain
+ * style.
+ * @param[in] quoted_implicit If the tag may be omitted for any
+ * non-plain style.
+ * @param[in] style The scalar style.
+ *
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_scalar_event_initialize(yaml_event_t *event,
+ yaml_char_t *anchor, yaml_char_t *tag,
+ yaml_char_t *value, int length,
+ int plain_implicit, int quoted_implicit,
+ yaml_scalar_style_t style);
+
+/**
+ * Create a SEQUENCE-START event.
+ *
+ * The @a style argument may be ignored by the emitter.
+ *
+ * Either the @a tag attribute or the @a implicit flag must be set.
+ *
+ * @param[out] event An empty event object.
+ * @param[in] anchor The sequence anchor or @c NULL.
+ * @param[in] tag The sequence tag or @c NULL.
+ * @param[in] implicit If the tag may be omitted.
+ * @param[in] style The sequence style.
+ *
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_sequence_start_event_initialize(yaml_event_t *event,
+ yaml_char_t *anchor, yaml_char_t *tag, int implicit,
+ yaml_sequence_style_t style);
+
+/**
+ * Create a SEQUENCE-END event.
+ *
+ * @param[out] event An empty event object.
+ *
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_sequence_end_event_initialize(yaml_event_t *event);
+
+/**
+ * Create a MAPPING-START event.
+ *
+ * The @a style argument may be ignored by the emitter.
+ *
+ * Either the @a tag attribute or the @a implicit flag must be set.
+ *
+ * @param[out] event An empty event object.
+ * @param[in] anchor The mapping anchor or @c NULL.
+ * @param[in] tag The mapping tag or @c NULL.
+ * @param[in] implicit If the tag may be omitted.
+ * @param[in] style The mapping style.
+ *
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_mapping_start_event_initialize(yaml_event_t *event,
+ yaml_char_t *anchor, yaml_char_t *tag, int implicit,
+ yaml_mapping_style_t style);
+
+/**
+ * Create a MAPPING-END event.
+ *
+ * @param[out] event An empty event object.
+ *
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_mapping_end_event_initialize(yaml_event_t *event);
+
+/**
+ * Free any memory allocated for an event object.
+ *
+ * @param[in,out] event An event object.
+ */
+
+YAML_DECLARE(void)
+yaml_event_delete(yaml_event_t *event);
+
+/** @} */
+
+/**
+ * @defgroup nodes Nodes
+ * @{
+ */
+
+/** The tag @c !!null with the only possible value: @c null. */
+#define YAML_NULL_TAG "tag:yaml.org,2002:null"
+/** The tag @c !!bool with the values: @c true and @c falce. */
+#define YAML_BOOL_TAG "tag:yaml.org,2002:bool"
+/** The tag @c !!str for string values. */
+#define YAML_STR_TAG "tag:yaml.org,2002:str"
+/** The tag @c !!int for integer values. */
+#define YAML_INT_TAG "tag:yaml.org,2002:int"
+/** The tag @c !!float for float values. */
+#define YAML_FLOAT_TAG "tag:yaml.org,2002:float"
+/** The tag @c !!timestamp for date and time values. */
+#define YAML_TIMESTAMP_TAG "tag:yaml.org,2002:timestamp"
+
+/** The tag @c !!seq is used to denote sequences. */
+#define YAML_SEQ_TAG "tag:yaml.org,2002:seq"
+/** The tag @c !!map is used to denote mapping. */
+#define YAML_MAP_TAG "tag:yaml.org,2002:map"
+
+/** The default scalar tag is @c !!str. */
+#define YAML_DEFAULT_SCALAR_TAG YAML_STR_TAG
+/** The default sequence tag is @c !!seq. */
+#define YAML_DEFAULT_SEQUENCE_TAG YAML_SEQ_TAG
+/** The default mapping tag is @c !!map. */
+#define YAML_DEFAULT_MAPPING_TAG YAML_MAP_TAG
+
+/** Node types. */
+typedef enum yaml_node_type_e {
+ /** An empty node. */
+ YAML_NO_NODE,
+
+ /** A scalar node. */
+ YAML_SCALAR_NODE,
+ /** A sequence node. */
+ YAML_SEQUENCE_NODE,
+ /** A mapping node. */
+ YAML_MAPPING_NODE
+} yaml_node_type_t;
+
+/** The forward definition of a document node structure. */
+typedef struct yaml_node_s yaml_node_t;
+
+/** An element of a sequence node. */
+typedef int yaml_node_item_t;
+
+/** An element of a mapping node. */
+typedef struct yaml_node_pair_s {
+ /** The key of the element. */
+ int key;
+ /** The value of the element. */
+ int value;
+} yaml_node_pair_t;
+
+/** The node structure. */
+struct yaml_node_s {
+
+ /** The node type. */
+ yaml_node_type_t type;
+
+ /** The node tag. */
+ yaml_char_t *tag;
+
+ /** The node data. */
+ union {
+
+ /** The scalar parameters (for @c YAML_SCALAR_NODE). */
+ struct {
+ /** The scalar value. */
+ yaml_char_t *value;
+ /** The length of the scalar value. */
+ size_t length;
+ /** The scalar style. */
+ yaml_scalar_style_t style;
+ } scalar;
+
+ /** The sequence parameters (for @c YAML_SEQUENCE_NODE). */
+ struct {
+ /** The stack of sequence items. */
+ struct {
+ /** The beginning of the stack. */
+ yaml_node_item_t *start;
+ /** The end of the stack. */
+ yaml_node_item_t *end;
+ /** The top of the stack. */
+ yaml_node_item_t *top;
+ } items;
+ /** The sequence style. */
+ yaml_sequence_style_t style;
+ } sequence;
+
+ /** The mapping parameters (for @c YAML_MAPPING_NODE). */
+ struct {
+ /** The stack of mapping pairs (key, value). */
+ struct {
+ /** The beginning of the stack. */
+ yaml_node_pair_t *start;
+ /** The end of the stack. */
+ yaml_node_pair_t *end;
+ /** The top of the stack. */
+ yaml_node_pair_t *top;
+ } pairs;
+ /** The mapping style. */
+ yaml_mapping_style_t style;
+ } mapping;
+
+ } data;
+
+ /** The beginning of the node. */
+ yaml_mark_t start_mark;
+ /** The end of the node. */
+ yaml_mark_t end_mark;
+
+};
+
+/** The document structure. */
+typedef struct yaml_document_s {
+
+ /** The document nodes. */
+ struct {
+ /** The beginning of the stack. */
+ yaml_node_t *start;
+ /** The end of the stack. */
+ yaml_node_t *end;
+ /** The top of the stack. */
+ yaml_node_t *top;
+ } nodes;
+
+ /** The version directive. */
+ yaml_version_directive_t *version_directive;
+
+ /** The list of tag directives. */
+ struct {
+ /** The beginning of the tag directives list. */
+ yaml_tag_directive_t *start;
+ /** The end of the tag directives list. */
+ yaml_tag_directive_t *end;
+ } tag_directives;
+
+ /** Is the document start indicator implicit? */
+ int start_implicit;
+ /** Is the document end indicator implicit? */
+ int end_implicit;
+
+ /** The beginning of the document. */
+ yaml_mark_t start_mark;
+ /** The end of the document. */
+ yaml_mark_t end_mark;
+
+} yaml_document_t;
+
+/**
+ * Create a YAML document.
+ *
+ * @param[out] document An empty document object.
+ * @param[in] version_directive The %YAML directive value or
+ * @c NULL.
+ * @param[in] tag_directives_start The beginning of the %TAG
+ * directives list.
+ * @param[in] tag_directives_end The end of the %TAG directives
+ * list.
+ * @param[in] start_implicit If the document start indicator is
+ * implicit.
+ * @param[in] end_implicit If the document end indicator is
+ * implicit.
+ *
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_document_initialize(yaml_document_t *document,
+ yaml_version_directive_t *version_directive,
+ yaml_tag_directive_t *tag_directives_start,
+ yaml_tag_directive_t *tag_directives_end,
+ int start_implicit, int end_implicit);
+
+/**
+ * Delete a YAML document and all its nodes.
+ *
+ * @param[in,out] document A document object.
+ */
+
+YAML_DECLARE(void)
+yaml_document_delete(yaml_document_t *document);
+
+/**
+ * Get a node of a YAML document.
+ *
+ * The pointer returned by this function is valid until any of the functions
+ * modifying the documents are called.
+ *
+ * @param[in] document A document object.
+ * @param[in] index The node id.
+ *
+ * @returns the node objct or @c NULL if @c node_id is out of range.
+ */
+
+YAML_DECLARE(yaml_node_t *)
+yaml_document_get_node(yaml_document_t *document, int index);
+
+/**
+ * Get the root of a YAML document node.
+ *
+ * The root object is the first object added to the document.
+ *
+ * The pointer returned by this function is valid until any of the functions
+ * modifying the documents are called.
+ *
+ * An empty document produced by the parser signifies the end of a YAML
+ * stream.
+ *
+ * @param[in] document A document object.
+ *
+ * @returns the node object or @c NULL if the document is empty.
+ */
+
+YAML_DECLARE(yaml_node_t *)
+yaml_document_get_root_node(yaml_document_t *document);
+
+/**
+ * Create a SCALAR node and attach it to the document.
+ *
+ * The @a style argument may be ignored by the emitter.
+ *
+ * @param[in,out] document A document object.
+ * @param[in] tag The scalar tag.
+ * @param[in] value The scalar value.
+ * @param[in] length The length of the scalar value.
+ * @param[in] style The scalar style.
+ *
+ * @returns the node id or @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_document_add_scalar(yaml_document_t *document,
+ yaml_char_t *tag, yaml_char_t *value, int length,
+ yaml_scalar_style_t style);
+
+/**
+ * Create a SEQUENCE node and attach it to the document.
+ *
+ * The @a style argument may be ignored by the emitter.
+ *
+ * @param[in,out] document A document object.
+ * @param[in] tag The sequence tag.
+ * @param[in] style The sequence style.
+ *
+ * @returns the node id or @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_document_add_sequence(yaml_document_t *document,
+ yaml_char_t *tag, yaml_sequence_style_t style);
+
+/**
+ * Create a MAPPING node and attach it to the document.
+ *
+ * The @a style argument may be ignored by the emitter.
+ *
+ * @param[in,out] document A document object.
+ * @param[in] tag The sequence tag.
+ * @param[in] style The sequence style.
+ *
+ * @returns the node id or @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_document_add_mapping(yaml_document_t *document,
+ yaml_char_t *tag, yaml_mapping_style_t style);
+
+/**
+ * Add an item to a SEQUENCE node.
+ *
+ * @param[in,out] document A document object.
+ * @param[in] sequence The sequence node id.
+ * @param[in] item The item node id.
+*
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_document_append_sequence_item(yaml_document_t *document,
+ int sequence, int item);
+
+/**
+ * Add a pair of a key and a value to a MAPPING node.
+ *
+ * @param[in,out] document A document object.
+ * @param[in] mapping The mapping node id.
+ * @param[in] key The key node id.
+ * @param[in] value The value node id.
+*
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_document_append_mapping_pair(yaml_document_t *document,
+ int mapping, int key, int value);
+
+/** @} */
+
+/**
+ * @defgroup parser Parser Definitions
+ * @{
+ */
+
+/**
+ * The prototype of a read handler.
+ *
+ * The read handler is called when the parser needs to read more bytes from the
+ * source. The handler should write not more than @a size bytes to the @a
+ * buffer. The number of written bytes should be set to the @a length variable.
+ *
+ * @param[in,out] data A pointer to an application data specified by
+ * yaml_parser_set_input().
+ * @param[out] buffer The buffer to write the data from the source.
+ * @param[in] size The size of the buffer.
+ * @param[out] size_read The actual number of bytes read from the source.
+ *
+ * @returns On success, the handler should return @c 1. If the handler failed,
+ * the returned value should be @c 0. On EOF, the handler should set the
+ * @a size_read to @c 0 and return @c 1.
+ */
+
+typedef int yaml_read_handler_t(void *data, unsigned char *buffer, size_t size,
+ size_t *size_read);
+
+/**
+ * This structure holds information about a potential simple key.
+ */
+
+typedef struct yaml_simple_key_s {
+ /** Is a simple key possible? */
+ int possible;
+
+ /** Is a simple key required? */
+ int required;
+
+ /** The number of the token. */
+ size_t token_number;
+
+ /** The position mark. */
+ yaml_mark_t mark;
+} yaml_simple_key_t;
+
+/**
+ * The states of the parser.
+ */
+typedef enum yaml_parser_state_e {
+ /** Expect STREAM-START. */
+ YAML_PARSE_STREAM_START_STATE,
+ /** Expect the beginning of an implicit document. */
+ YAML_PARSE_IMPLICIT_DOCUMENT_START_STATE,
+ /** Expect DOCUMENT-START. */
+ YAML_PARSE_DOCUMENT_START_STATE,
+ /** Expect the content of a document. */
+ YAML_PARSE_DOCUMENT_CONTENT_STATE,
+ /** Expect DOCUMENT-END. */
+ YAML_PARSE_DOCUMENT_END_STATE,
+ /** Expect a block node. */
+ YAML_PARSE_BLOCK_NODE_STATE,
+ /** Expect a block node or indentless sequence. */
+ YAML_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE,
+ /** Expect a flow node. */
+ YAML_PARSE_FLOW_NODE_STATE,
+ /** Expect the first entry of a block sequence. */
+ YAML_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE,
+ /** Expect an entry of a block sequence. */
+ YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE,
+ /** Expect an entry of an indentless sequence. */
+ YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE,
+ /** Expect the first key of a block mapping. */
+ YAML_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE,
+ /** Expect a block mapping key. */
+ YAML_PARSE_BLOCK_MAPPING_KEY_STATE,
+ /** Expect a block mapping value. */
+ YAML_PARSE_BLOCK_MAPPING_VALUE_STATE,
+ /** Expect the first entry of a flow sequence. */
+ YAML_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE,
+ /** Expect an entry of a flow sequence. */
+ YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE,
+ /** Expect a key of an ordered mapping. */
+ YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE,
+ /** Expect a value of an ordered mapping. */
+ YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE,
+ /** Expect the and of an ordered mapping entry. */
+ YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE,
+ /** Expect the first key of a flow mapping. */
+ YAML_PARSE_FLOW_MAPPING_FIRST_KEY_STATE,
+ /** Expect a key of a flow mapping. */
+ YAML_PARSE_FLOW_MAPPING_KEY_STATE,
+ /** Expect a value of a flow mapping. */
+ YAML_PARSE_FLOW_MAPPING_VALUE_STATE,
+ /** Expect an empty value of a flow mapping. */
+ YAML_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE,
+ /** Expect nothing. */
+ YAML_PARSE_END_STATE
+} yaml_parser_state_t;
+
+/**
+ * This structure holds aliases data.
+ */
+
+typedef struct yaml_alias_data_s {
+ /** The anchor. */
+ yaml_char_t *anchor;
+ /** The node id. */
+ int index;
+ /** The anchor mark. */
+ yaml_mark_t mark;
+} yaml_alias_data_t;
+
+/**
+ * The parser structure.
+ *
+ * All members are internal. Manage the structure using the @c yaml_parser_
+ * family of functions.
+ */
+
+typedef struct yaml_parser_s {
+
+ /**
+ * @name Error handling
+ * @{
+ */
+
+ /** Error type. */
+ yaml_error_type_t error;
+ /** Error description. */
+ const char *problem;
+ /** The byte about which the problem occurred. */
+ size_t problem_offset;
+ /** The problematic value (@c -1 is none). */
+ int problem_value;
+ /** The problem position. */
+ yaml_mark_t problem_mark;
+ /** The error context. */
+ const char *context;
+ /** The context position. */
+ yaml_mark_t context_mark;
+
+ /**
+ * @}
+ */
+
+ /**
+ * @name Reader stuff
+ * @{
+ */
+
+ /** Read handler. */
+ yaml_read_handler_t *read_handler;
+
+ /** A pointer for passing to the read handler. */
+ void *read_handler_data;
+
+ /** Standard (string or file) input data. */
+ union {
+ /** String input data. */
+ struct {
+ /** The string start pointer. */
+ const unsigned char *start;
+ /** The string end pointer. */
+ const unsigned char *end;
+ /** The string current position. */
+ const unsigned char *current;
+ } string;
+
+ /** File input data. */
+ FILE *file;
+ } input;
+
+ /** EOF flag */
+ int eof;
+
+ /** The working buffer. */
+ struct {
+ /** The beginning of the buffer. */
+ yaml_char_t *start;
+ /** The end of the buffer. */
+ yaml_char_t *end;
+ /** The current position of the buffer. */
+ yaml_char_t *pointer;
+ /** The last filled position of the buffer. */
+ yaml_char_t *last;
+ } buffer;
+
+ /* The number of unread characters in the buffer. */
+ size_t unread;
+
+ /** The raw buffer. */
+ struct {
+ /** The beginning of the buffer. */
+ unsigned char *start;
+ /** The end of the buffer. */
+ unsigned char *end;
+ /** The current position of the buffer. */
+ unsigned char *pointer;
+ /** The last filled position of the buffer. */
+ unsigned char *last;
+ } raw_buffer;
+
+ /** The input encoding. */
+ yaml_encoding_t encoding;
+
+ /** The offset of the current position (in bytes). */
+ size_t offset;
+
+ /** The mark of the current position. */
+ yaml_mark_t mark;
+
+ /**
+ * @}
+ */
+
+ /**
+ * @name Scanner stuff
+ * @{
+ */
+
+ /** Have we started to scan the input stream? */
+ int stream_start_produced;
+
+ /** Have we reached the end of the input stream? */
+ int stream_end_produced;
+
+ /** The number of unclosed '[' and '{' indicators. */
+ int flow_level;
+
+ /** The tokens queue. */
+ struct {
+ /** The beginning of the tokens queue. */
+ yaml_token_t *start;
+ /** The end of the tokens queue. */
+ yaml_token_t *end;
+ /** The head of the tokens queue. */
+ yaml_token_t *head;
+ /** The tail of the tokens queue. */
+ yaml_token_t *tail;
+ } tokens;
+
+ /** The number of tokens fetched from the queue. */
+ size_t tokens_parsed;
+
+ /* Does the tokens queue contain a token ready for dequeueing. */
+ int token_available;
+
+ /** The indentation levels stack. */
+ struct {
+ /** The beginning of the stack. */
+ int *start;
+ /** The end of the stack. */
+ int *end;
+ /** The top of the stack. */
+ int *top;
+ } indents;
+
+ /** The current indentation level. */
+ int indent;
+
+ /** May a simple key occur at the current position? */
+ int simple_key_allowed;
+
+ /** The stack of simple keys. */
+ struct {
+ /** The beginning of the stack. */
+ yaml_simple_key_t *start;
+ /** The end of the stack. */
+ yaml_simple_key_t *end;
+ /** The top of the stack. */
+ yaml_simple_key_t *top;
+ } simple_keys;
+
+ /**
+ * @}
+ */
+
+ /**
+ * @name Parser stuff
+ * @{
+ */
+
+ /** The parser states stack. */
+ struct {
+ /** The beginning of the stack. */
+ yaml_parser_state_t *start;
+ /** The end of the stack. */
+ yaml_parser_state_t *end;
+ /** The top of the stack. */
+ yaml_parser_state_t *top;
+ } states;
+
+ /** The current parser state. */
+ yaml_parser_state_t state;
+
+ /** The stack of marks. */
+ struct {
+ /** The beginning of the stack. */
+ yaml_mark_t *start;
+ /** The end of the stack. */
+ yaml_mark_t *end;
+ /** The top of the stack. */
+ yaml_mark_t *top;
+ } marks;
+
+ /** The list of TAG directives. */
+ struct {
+ /** The beginning of the list. */
+ yaml_tag_directive_t *start;
+ /** The end of the list. */
+ yaml_tag_directive_t *end;
+ /** The top of the list. */
+ yaml_tag_directive_t *top;
+ } tag_directives;
+
+ /**
+ * @}
+ */
+
+ /**
+ * @name Dumper stuff
+ * @{
+ */
+
+ /** The alias data. */
+ struct {
+ /** The beginning of the list. */
+ yaml_alias_data_t *start;
+ /** The end of the list. */
+ yaml_alias_data_t *end;
+ /** The top of the list. */
+ yaml_alias_data_t *top;
+ } aliases;
+
+ /** The currently parsed document. */
+ yaml_document_t *document;
+
+ /**
+ * @}
+ */
+
+} yaml_parser_t;
+
+/**
+ * Initialize a parser.
+ *
+ * This function creates a new parser object. An application is responsible
+ * for destroying the object using the yaml_parser_delete() function.
+ *
+ * @param[out] parser An empty parser object.
+ *
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_parser_initialize(yaml_parser_t *parser);
+
+/**
+ * Destroy a parser.
+ *
+ * @param[in,out] parser A parser object.
+ */
+
+YAML_DECLARE(void)
+yaml_parser_delete(yaml_parser_t *parser);
+
+/**
+ * Set a string input.
+ *
+ * Note that the @a input pointer must be valid while the @a parser object
+ * exists. The application is responsible for destroing @a input after
+ * destroying the @a parser.
+ *
+ * @param[in,out] parser A parser object.
+ * @param[in] input A source data.
+ * @param[in] size The length of the source data in bytes.
+ */
+
+YAML_DECLARE(void)
+yaml_parser_set_input_string(yaml_parser_t *parser,
+ const unsigned char *input, size_t size);
+
+/**
+ * Set a file input.
+ *
+ * @a file should be a file object open for reading. The application is
+ * responsible for closing the @a file.
+ *
+ * @param[in,out] parser A parser object.
+ * @param[in] file An open file.
+ */
+
+YAML_DECLARE(void)
+yaml_parser_set_input_file(yaml_parser_t *parser, FILE *file);
+
+/**
+ * Set a generic input handler.
+ *
+ * @param[in,out] parser A parser object.
+ * @param[in] handler A read handler.
+ * @param[in] data Any application data for passing to the read
+ * handler.
+ */
+
+YAML_DECLARE(void)
+yaml_parser_set_input(yaml_parser_t *parser,
+ yaml_read_handler_t *handler, void *data);
+
+/**
+ * Set the source encoding.
+ *
+ * @param[in,out] parser A parser object.
+ * @param[in] encoding The source encoding.
+ */
+
+YAML_DECLARE(void)
+yaml_parser_set_encoding(yaml_parser_t *parser, yaml_encoding_t encoding);
+
+/**
+ * Scan the input stream and produce the next token.
+ *
+ * Call the function subsequently to produce a sequence of tokens corresponding
+ * to the input stream. The initial token has the type
+ * @c YAML_STREAM_START_TOKEN while the ending token has the type
+ * @c YAML_STREAM_END_TOKEN.
+ *
+ * An application is responsible for freeing any buffers associated with the
+ * produced token object using the @c yaml_token_delete function.
+ *
+ * An application must not alternate the calls of yaml_parser_scan() with the
+ * calls of yaml_parser_parse() or yaml_parser_load(). Doing this will break
+ * the parser.
+ *
+ * @param[in,out] parser A parser object.
+ * @param[out] token An empty token object.
+ *
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_parser_scan(yaml_parser_t *parser, yaml_token_t *token);
+
+/**
+ * Parse the input stream and produce the next parsing event.
+ *
+ * Call the function subsequently to produce a sequence of events corresponding
+ * to the input stream. The initial event has the type
+ * @c YAML_STREAM_START_EVENT while the ending event has the type
+ * @c YAML_STREAM_END_EVENT.
+ *
+ * An application is responsible for freeing any buffers associated with the
+ * produced event object using the yaml_event_delete() function.
+ *
+ * An application must not alternate the calls of yaml_parser_parse() with the
+ * calls of yaml_parser_scan() or yaml_parser_load(). Doing this will break the
+ * parser.
+ *
+ * @param[in,out] parser A parser object.
+ * @param[out] event An empty event object.
+ *
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_parser_parse(yaml_parser_t *parser, yaml_event_t *event);
+
+/**
+ * Parse the input stream and produce the next YAML document.
+ *
+ * Call this function subsequently to produce a sequence of documents
+ * constituting the input stream.
+ *
+ * If the produced document has no root node, it means that the document
+ * end has been reached.
+ *
+ * An application is responsible for freeing any data associated with the
+ * produced document object using the yaml_document_delete() function.
+ *
+ * An application must not alternate the calls of yaml_parser_load() with the
+ * calls of yaml_parser_scan() or yaml_parser_parse(). Doing this will break
+ * the parser.
+ *
+ * @param[in,out] parser A parser object.
+ * @param[out] document An empty document object.
+ *
+ * @return @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_parser_load(yaml_parser_t *parser, yaml_document_t *document);
+
+/** @} */
+
+/**
+ * @defgroup emitter Emitter Definitions
+ * @{
+ */
+
+/**
+ * The prototype of a write handler.
+ *
+ * The write handler is called when the emitter needs to flush the accumulated
+ * characters to the output. The handler should write @a size bytes of the
+ * @a buffer to the output.
+ *
+ * @param[in,out] data A pointer to an application data specified by
+ * yaml_emitter_set_output().
+ * @param[in] buffer The buffer with bytes to be written.
+ * @param[in] size The size of the buffer.
+ *
+ * @returns On success, the handler should return @c 1. If the handler failed,
+ * the returned value should be @c 0.
+ */
+
+typedef int yaml_write_handler_t(void *data, unsigned char *buffer, size_t size);
+
+/** The emitter states. */
+typedef enum yaml_emitter_state_e {
+ /** Expect STREAM-START. */
+ YAML_EMIT_STREAM_START_STATE,
+ /** Expect the first DOCUMENT-START or STREAM-END. */
+ YAML_EMIT_FIRST_DOCUMENT_START_STATE,
+ /** Expect DOCUMENT-START or STREAM-END. */
+ YAML_EMIT_DOCUMENT_START_STATE,
+ /** Expect the content of a document. */
+ YAML_EMIT_DOCUMENT_CONTENT_STATE,
+ /** Expect DOCUMENT-END. */
+ YAML_EMIT_DOCUMENT_END_STATE,
+ /** Expect the first item of a flow sequence. */
+ YAML_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE,
+ /** Expect an item of a flow sequence. */
+ YAML_EMIT_FLOW_SEQUENCE_ITEM_STATE,
+ /** Expect the first key of a flow mapping. */
+ YAML_EMIT_FLOW_MAPPING_FIRST_KEY_STATE,
+ /** Expect a key of a flow mapping. */
+ YAML_EMIT_FLOW_MAPPING_KEY_STATE,
+ /** Expect a value for a simple key of a flow mapping. */
+ YAML_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE,
+ /** Expect a value of a flow mapping. */
+ YAML_EMIT_FLOW_MAPPING_VALUE_STATE,
+ /** Expect the first item of a block sequence. */
+ YAML_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE,
+ /** Expect an item of a block sequence. */
+ YAML_EMIT_BLOCK_SEQUENCE_ITEM_STATE,
+ /** Expect the first key of a block mapping. */
+ YAML_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE,
+ /** Expect the key of a block mapping. */
+ YAML_EMIT_BLOCK_MAPPING_KEY_STATE,
+ /** Expect a value for a simple key of a block mapping. */
+ YAML_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE,
+ /** Expect a value of a block mapping. */
+ YAML_EMIT_BLOCK_MAPPING_VALUE_STATE,
+ /** Expect nothing. */
+ YAML_EMIT_END_STATE
+} yaml_emitter_state_t;
+
+/**
+ * The emitter structure.
+ *
+ * All members are internal. Manage the structure using the @c yaml_emitter_
+ * family of functions.
+ */
+
+typedef struct yaml_emitter_s {
+
+ /**
+ * @name Error handling
+ * @{
+ */
+
+ /** Error type. */
+ yaml_error_type_t error;
+ /** Error description. */
+ const char *problem;
+
+ /**
+ * @}
+ */
+
+ /**
+ * @name Writer stuff
+ * @{
+ */
+
+ /** Write handler. */
+ yaml_write_handler_t *write_handler;
+
+ /** A pointer for passing to the white handler. */
+ void *write_handler_data;
+
+ /** Standard (string or file) output data. */
+ union {
+ /** String output data. */
+ struct {
+ /** The buffer pointer. */
+ unsigned char *buffer;
+ /** The buffer size. */
+ size_t size;
+ /** The number of written bytes. */
+ size_t *size_written;
+ } string;
+
+ /** File output data. */
+ FILE *file;
+ } output;
+
+ /** The working buffer. */
+ struct {
+ /** The beginning of the buffer. */
+ yaml_char_t *start;
+ /** The end of the buffer. */
+ yaml_char_t *end;
+ /** The current position of the buffer. */
+ yaml_char_t *pointer;
+ /** The last filled position of the buffer. */
+ yaml_char_t *last;
+ } buffer;
+
+ /** The raw buffer. */
+ struct {
+ /** The beginning of the buffer. */
+ unsigned char *start;
+ /** The end of the buffer. */
+ unsigned char *end;
+ /** The current position of the buffer. */
+ unsigned char *pointer;
+ /** The last filled position of the buffer. */
+ unsigned char *last;
+ } raw_buffer;
+
+ /** The stream encoding. */
+ yaml_encoding_t encoding;
+
+ /**
+ * @}
+ */
+
+ /**
+ * @name Emitter stuff
+ * @{
+ */
+
+ /** If the output is in the canonical style? */
+ int canonical;
+ /** The number of indentation spaces. */
+ int best_indent;
+ /** The preferred width of the output lines. */
+ int best_width;
+ /** Allow unescaped non-ASCII characters? */
+ int unicode;
+ /** The preferred line break. */
+ yaml_break_t line_break;
+
+ /** The stack of states. */
+ struct {
+ /** The beginning of the stack. */
+ yaml_emitter_state_t *start;
+ /** The end of the stack. */
+ yaml_emitter_state_t *end;
+ /** The top of the stack. */
+ yaml_emitter_state_t *top;
+ } states;
+
+ /** The current emitter state. */
+ yaml_emitter_state_t state;
+
+ /** The event queue. */
+ struct {
+ /** The beginning of the event queue. */
+ yaml_event_t *start;
+ /** The end of the event queue. */
+ yaml_event_t *end;
+ /** The head of the event queue. */
+ yaml_event_t *head;
+ /** The tail of the event queue. */
+ yaml_event_t *tail;
+ } events;
+
+ /** The stack of indentation levels. */
+ struct {
+ /** The beginning of the stack. */
+ int *start;
+ /** The end of the stack. */
+ int *end;
+ /** The top of the stack. */
+ int *top;
+ } indents;
+
+ /** The list of tag directives. */
+ struct {
+ /** The beginning of the list. */
+ yaml_tag_directive_t *start;
+ /** The end of the list. */
+ yaml_tag_directive_t *end;
+ /** The top of the list. */
+ yaml_tag_directive_t *top;
+ } tag_directives;
+
+ /** The current indentation level. */
+ int indent;
+
+ /** The current flow level. */
+ int flow_level;
+
+ /** Is it the document root context? */
+ int root_context;
+ /** Is it a sequence context? */
+ int sequence_context;
+ /** Is it a mapping context? */
+ int mapping_context;
+ /** Is it a simple mapping key context? */
+ int simple_key_context;
+
+ /** The current line. */
+ int line;
+ /** The current column. */
+ int column;
+ /** If the last character was a whitespace? */
+ int whitespace;
+ /** If the last character was an indentation character (' ', '-', '?', ':')? */
+ int indention;
+ /** If an explicit document end is required? */
+ int open_ended;
+
+ /** Anchor analysis. */
+ struct {
+ /** The anchor value. */
+ yaml_char_t *anchor;
+ /** The anchor length. */
+ size_t anchor_length;
+ /** Is it an alias? */
+ int alias;
+ } anchor_data;
+
+ /** Tag analysis. */
+ struct {
+ /** The tag handle. */
+ yaml_char_t *handle;
+ /** The tag handle length. */
+ size_t handle_length;
+ /** The tag suffix. */
+ yaml_char_t *suffix;
+ /** The tag suffix length. */
+ size_t suffix_length;
+ } tag_data;
+
+ /** Scalar analysis. */
+ struct {
+ /** The scalar value. */
+ yaml_char_t *value;
+ /** The scalar length. */
+ size_t length;
+ /** Does the scalar contain line breaks? */
+ int multiline;
+ /** Can the scalar be expessed in the flow plain style? */
+ int flow_plain_allowed;
+ /** Can the scalar be expressed in the block plain style? */
+ int block_plain_allowed;
+ /** Can the scalar be expressed in the single quoted style? */
+ int single_quoted_allowed;
+ /** Can the scalar be expressed in the literal or folded styles? */
+ int block_allowed;
+ /** The output style. */
+ yaml_scalar_style_t style;
+ } scalar_data;
+
+ /**
+ * @}
+ */
+
+ /**
+ * @name Dumper stuff
+ * @{
+ */
+
+ /** If the stream was already opened? */
+ int opened;
+ /** If the stream was already closed? */
+ int closed;
+
+ /** The information associated with the document nodes. */
+ struct {
+ /** The number of references. */
+ int references;
+ /** The anchor id. */
+ int anchor;
+ /** If the node has been emitted? */
+ int serialized;
+ } *anchors;
+
+ /** The last assigned anchor id. */
+ int last_anchor_id;
+
+ /** The currently emitted document. */
+ yaml_document_t *document;
+
+ /**
+ * @}
+ */
+
+} yaml_emitter_t;
+
+/**
+ * Initialize an emitter.
+ *
+ * This function creates a new emitter object. An application is responsible
+ * for destroying the object using the yaml_emitter_delete() function.
+ *
+ * @param[out] emitter An empty parser object.
+ *
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_emitter_initialize(yaml_emitter_t *emitter);
+
+/**
+ * Destroy an emitter.
+ *
+ * @param[in,out] emitter An emitter object.
+ */
+
+YAML_DECLARE(void)
+yaml_emitter_delete(yaml_emitter_t *emitter);
+
+/**
+ * Set a string output.
+ *
+ * The emitter will write the output characters to the @a output buffer of the
+ * size @a size. The emitter will set @a size_written to the number of written
+ * bytes. If the buffer is smaller than required, the emitter produces the
+ * YAML_WRITE_ERROR error.
+ *
+ * @param[in,out] emitter An emitter object.
+ * @param[in] output An output buffer.
+ * @param[in] size The buffer size.
+ * @param[in] size_written The pointer to save the number of written
+ * bytes.
+ */
+
+YAML_DECLARE(void)
+yaml_emitter_set_output_string(yaml_emitter_t *emitter,
+ unsigned char *output, size_t size, size_t *size_written);
+
+/**
+ * Set a file output.
+ *
+ * @a file should be a file object open for writing. The application is
+ * responsible for closing the @a file.
+ *
+ * @param[in,out] emitter An emitter object.
+ * @param[in] file An open file.
+ */
+
+YAML_DECLARE(void)
+yaml_emitter_set_output_file(yaml_emitter_t *emitter, FILE *file);
+
+/**
+ * Set a generic output handler.
+ *
+ * @param[in,out] emitter An emitter object.
+ * @param[in] handler A write handler.
+ * @param[in] data Any application data for passing to the write
+ * handler.
+ */
+
+YAML_DECLARE(void)
+yaml_emitter_set_output(yaml_emitter_t *emitter,
+ yaml_write_handler_t *handler, void *data);
+
+/**
+ * Set the output encoding.
+ *
+ * @param[in,out] emitter An emitter object.
+ * @param[in] encoding The output encoding.
+ */
+
+YAML_DECLARE(void)
+yaml_emitter_set_encoding(yaml_emitter_t *emitter, yaml_encoding_t encoding);
+
+/**
+ * Set if the output should be in the "canonical" format as in the YAML
+ * specification.
+ *
+ * @param[in,out] emitter An emitter object.
+ * @param[in] canonical If the output is canonical.
+ */
+
+YAML_DECLARE(void)
+yaml_emitter_set_canonical(yaml_emitter_t *emitter, int canonical);
+
+/**
+ * Set the indentation increment.
+ *
+ * @param[in,out] emitter An emitter object.
+ * @param[in] indent The indentation increment (1 < . < 10).
+ */
+
+YAML_DECLARE(void)
+yaml_emitter_set_indent(yaml_emitter_t *emitter, int indent);
+
+/**
+ * Set the preferred line width. @c -1 means unlimited.
+ *
+ * @param[in,out] emitter An emitter object.
+ * @param[in] width The preferred line width.
+ */
+
+YAML_DECLARE(void)
+yaml_emitter_set_width(yaml_emitter_t *emitter, int width);
+
+/**
+ * Set if unescaped non-ASCII characters are allowed.
+ *
+ * @param[in,out] emitter An emitter object.
+ * @param[in] unicode If unescaped Unicode characters are allowed.
+ */
+
+YAML_DECLARE(void)
+yaml_emitter_set_unicode(yaml_emitter_t *emitter, int unicode);
+
+/**
+ * Set the preferred line break.
+ *
+ * @param[in,out] emitter An emitter object.
+ * @param[in] line_break The preferred line break.
+ */
+
+YAML_DECLARE(void)
+yaml_emitter_set_break(yaml_emitter_t *emitter, yaml_break_t line_break);
+
+/**
+ * Emit an event.
+ *
+ * The event object may be generated using the yaml_parser_parse() function.
+ * The emitter takes the responsibility for the event object and destroys its
+ * content after it is emitted. The event object is destroyed even if the
+ * function fails.
+ *
+ * @param[in,out] emitter An emitter object.
+ * @param[in,out] event An event object.
+ *
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_emitter_emit(yaml_emitter_t *emitter, yaml_event_t *event);
+
+/**
+ * Start a YAML stream.
+ *
+ * This function should be used before yaml_emitter_dump() is called.
+ *
+ * @param[in,out] emitter An emitter object.
+ *
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_emitter_open(yaml_emitter_t *emitter);
+
+/**
+ * Finish a YAML stream.
+ *
+ * This function should be used after yaml_emitter_dump() is called.
+ *
+ * @param[in,out] emitter An emitter object.
+ *
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_emitter_close(yaml_emitter_t *emitter);
+
+/**
+ * Emit a YAML document.
+ *
+ * The documen object may be generated using the yaml_parser_load() function
+ * or the yaml_document_initialize() function. The emitter takes the
+ * responsibility for the document object and destoys its content after
+ * it is emitted. The document object is destroyedeven if the function fails.
+ *
+ * @param[in,out] emitter An emitter object.
+ * @param[in,out] document A document object.
+ *
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_emitter_dump(yaml_emitter_t *emitter, yaml_document_t *document);
+
+/**
+ * Flush the accumulated characters to the output.
+ *
+ * @param[in,out] emitter An emitter object.
+ *
+ * @returns @c 1 if the function succeeded, @c 0 on error.
+ */
+
+YAML_DECLARE(int)
+yaml_emitter_flush(yaml_emitter_t *emitter);
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* #ifndef YAML_H */
+
diff --git a/jni/ruby/ext/psych/yaml/yaml_private.h b/jni/ruby/ext/psych/yaml/yaml_private.h
new file mode 100644
index 0000000..944499c
--- /dev/null
+++ b/jni/ruby/ext/psych/yaml/yaml_private.h
@@ -0,0 +1,664 @@
+#ifdef RUBY_EXTCONF_H
+#include RUBY_EXTCONF_H
+#endif
+
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <yaml.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <stddef.h>
+
+#ifndef _MSC_VER
+#include <stdint.h>
+#else
+#ifdef _WIN64
+#define PTRDIFF_MAX _I64_MAX
+#else
+#define PTRDIFF_MAX INT_MAX
+#endif
+#endif
+
+/*
+ * Memory management.
+ */
+
+YAML_DECLARE(void *)
+yaml_malloc(size_t size);
+
+YAML_DECLARE(void *)
+yaml_realloc(void *ptr, size_t size);
+
+YAML_DECLARE(void)
+yaml_free(void *ptr);
+
+YAML_DECLARE(yaml_char_t *)
+yaml_strdup(const yaml_char_t *);
+
+/*
+ * Reader: Ensure that the buffer contains at least `length` characters.
+ */
+
+YAML_DECLARE(int)
+yaml_parser_update_buffer(yaml_parser_t *parser, size_t length);
+
+/*
+ * Scanner: Ensure that the token stack contains at least one token ready.
+ */
+
+YAML_DECLARE(int)
+yaml_parser_fetch_more_tokens(yaml_parser_t *parser);
+
+/*
+ * The size of the input raw buffer.
+ */
+
+#define INPUT_RAW_BUFFER_SIZE 16384
+
+/*
+ * The size of the input buffer.
+ *
+ * It should be possible to decode the whole raw buffer.
+ */
+
+#define INPUT_BUFFER_SIZE (INPUT_RAW_BUFFER_SIZE*3)
+
+/*
+ * The size of the output buffer.
+ */
+
+#define OUTPUT_BUFFER_SIZE 16384
+
+/*
+ * The size of the output raw buffer.
+ *
+ * It should be possible to encode the whole output buffer.
+ */
+
+#define OUTPUT_RAW_BUFFER_SIZE (OUTPUT_BUFFER_SIZE*2+2)
+
+/*
+ * The size of other stacks and queues.
+ */
+
+#define INITIAL_STACK_SIZE 16
+#define INITIAL_QUEUE_SIZE 16
+#define INITIAL_STRING_SIZE 16
+
+/*
+ * Buffer management.
+ */
+
+#define BUFFER_INIT(context,buffer,size) \
+ (((buffer).start = yaml_malloc(size)) ? \
+ ((buffer).last = (buffer).pointer = (buffer).start, \
+ (buffer).end = (buffer).start+(size), \
+ 1) : \
+ ((context)->error = YAML_MEMORY_ERROR, \
+ 0))
+
+#define BUFFER_DEL(context,buffer) \
+ (yaml_free((buffer).start), \
+ (buffer).start = (buffer).pointer = (buffer).end = 0)
+
+/*
+ * String management.
+ */
+
+typedef struct {
+ yaml_char_t *start;
+ yaml_char_t *end;
+ yaml_char_t *pointer;
+} yaml_string_t;
+
+YAML_DECLARE(int)
+yaml_string_extend(yaml_char_t **start,
+ yaml_char_t **pointer, yaml_char_t **end);
+
+YAML_DECLARE(int)
+yaml_string_join(
+ yaml_char_t **a_start, yaml_char_t **a_pointer, yaml_char_t **a_end,
+ yaml_char_t **b_start, yaml_char_t **b_pointer, yaml_char_t **b_end);
+
+#define NULL_STRING { NULL, NULL, NULL }
+
+#define STRING(string,length) { (string), (string)+(length), (string) }
+
+#define STRING_ASSIGN(value,string,length) \
+ ((value).start = (string), \
+ (value).end = (string)+(length), \
+ (value).pointer = (string))
+
+#define STRING_INIT(context,string,size) \
+ (((string).start = yaml_malloc(size)) ? \
+ ((string).pointer = (string).start, \
+ (string).end = (string).start+(size), \
+ memset((string).start, 0, (size)), \
+ 1) : \
+ ((context)->error = YAML_MEMORY_ERROR, \
+ 0))
+
+#define STRING_DEL(context,string) \
+ (yaml_free((string).start), \
+ (string).start = (string).pointer = (string).end = 0)
+
+#define STRING_EXTEND(context,string) \
+ ((((string).pointer+5 < (string).end) \
+ || yaml_string_extend(&(string).start, \
+ &(string).pointer, &(string).end)) ? \
+ 1 : \
+ ((context)->error = YAML_MEMORY_ERROR, \
+ 0))
+
+#define CLEAR(context,string) \
+ ((string).pointer = (string).start, \
+ memset((string).start, 0, (string).end-(string).start))
+
+#define JOIN(context,string_a,string_b) \
+ ((yaml_string_join(&(string_a).start, &(string_a).pointer, \
+ &(string_a).end, &(string_b).start, \
+ &(string_b).pointer, &(string_b).end)) ? \
+ ((string_b).pointer = (string_b).start, \
+ 1) : \
+ ((context)->error = YAML_MEMORY_ERROR, \
+ 0))
+
+/*
+ * String check operations.
+ */
+
+/*
+ * Check the octet at the specified position.
+ */
+
+#define CHECK_AT(string,octet,offset) \
+ ((string).pointer[offset] == (yaml_char_t)(octet))
+
+/*
+ * Check the current octet in the buffer.
+ */
+
+#define CHECK(string,octet) CHECK_AT((string),(octet),0)
+
+/*
+ * Check if the character at the specified position is an alphabetical
+ * character, a digit, '_', or '-'.
+ */
+
+#define IS_ALPHA_AT(string,offset) \
+ (((string).pointer[offset] >= (yaml_char_t) '0' && \
+ (string).pointer[offset] <= (yaml_char_t) '9') || \
+ ((string).pointer[offset] >= (yaml_char_t) 'A' && \
+ (string).pointer[offset] <= (yaml_char_t) 'Z') || \
+ ((string).pointer[offset] >= (yaml_char_t) 'a' && \
+ (string).pointer[offset] <= (yaml_char_t) 'z') || \
+ (string).pointer[offset] == '_' || \
+ (string).pointer[offset] == '-')
+
+#define IS_ALPHA(string) IS_ALPHA_AT((string),0)
+
+/*
+ * Check if the character at the specified position is a digit.
+ */
+
+#define IS_DIGIT_AT(string,offset) \
+ (((string).pointer[offset] >= (yaml_char_t) '0' && \
+ (string).pointer[offset] <= (yaml_char_t) '9'))
+
+#define IS_DIGIT(string) IS_DIGIT_AT((string),0)
+
+/*
+ * Get the value of a digit.
+ */
+
+#define AS_DIGIT_AT(string,offset) \
+ ((string).pointer[offset] - (yaml_char_t) '0')
+
+#define AS_DIGIT(string) AS_DIGIT_AT((string),0)
+
+/*
+ * Check if the character at the specified position is a hex-digit.
+ */
+
+#define IS_HEX_AT(string,offset) \
+ (((string).pointer[offset] >= (yaml_char_t) '0' && \
+ (string).pointer[offset] <= (yaml_char_t) '9') || \
+ ((string).pointer[offset] >= (yaml_char_t) 'A' && \
+ (string).pointer[offset] <= (yaml_char_t) 'F') || \
+ ((string).pointer[offset] >= (yaml_char_t) 'a' && \
+ (string).pointer[offset] <= (yaml_char_t) 'f'))
+
+#define IS_HEX(string) IS_HEX_AT((string),0)
+
+/*
+ * Get the value of a hex-digit.
+ */
+
+#define AS_HEX_AT(string,offset) \
+ (((string).pointer[offset] >= (yaml_char_t) 'A' && \
+ (string).pointer[offset] <= (yaml_char_t) 'F') ? \
+ ((string).pointer[offset] - (yaml_char_t) 'A' + 10) : \
+ ((string).pointer[offset] >= (yaml_char_t) 'a' && \
+ (string).pointer[offset] <= (yaml_char_t) 'f') ? \
+ ((string).pointer[offset] - (yaml_char_t) 'a' + 10) : \
+ ((string).pointer[offset] - (yaml_char_t) '0'))
+
+#define AS_HEX(string) AS_HEX_AT((string),0)
+
+/*
+ * Check if the character is ASCII.
+ */
+
+#define IS_ASCII_AT(string,offset) \
+ ((string).pointer[offset] <= (yaml_char_t) '\x7F')
+
+#define IS_ASCII(string) IS_ASCII_AT((string),0)
+
+/*
+ * Check if the character can be printed unescaped.
+ */
+
+#define IS_PRINTABLE_AT(string,offset) \
+ (((string).pointer[offset] == 0x0A) /* . == #x0A */ \
+ || ((string).pointer[offset] >= 0x20 /* #x20 <= . <= #x7E */ \
+ && (string).pointer[offset] <= 0x7E) \
+ || ((string).pointer[offset] == 0xC2 /* #0xA0 <= . <= #xD7FF */ \
+ && (string).pointer[offset+1] >= 0xA0) \
+ || ((string).pointer[offset] > 0xC2 \
+ && (string).pointer[offset] < 0xED) \
+ || ((string).pointer[offset] == 0xED \
+ && (string).pointer[offset+1] < 0xA0) \
+ || ((string).pointer[offset] == 0xEE) \
+ || ((string).pointer[offset] == 0xEF /* #xE000 <= . <= #xFFFD */ \
+ && !((string).pointer[offset+1] == 0xBB /* && . != #xFEFF */ \
+ && (string).pointer[offset+2] == 0xBF) \
+ && !((string).pointer[offset+1] == 0xBF \
+ && ((string).pointer[offset+2] == 0xBE \
+ || (string).pointer[offset+2] == 0xBF))))
+
+#define IS_PRINTABLE(string) IS_PRINTABLE_AT((string),0)
+
+/*
+ * Check if the character at the specified position is NUL.
+ */
+
+#define IS_Z_AT(string,offset) CHECK_AT((string),'\0',(offset))
+
+#define IS_Z(string) IS_Z_AT((string),0)
+
+/*
+ * Check if the character at the specified position is BOM.
+ */
+
+#define IS_BOM_AT(string,offset) \
+ (CHECK_AT((string),'\xEF',(offset)) \
+ && CHECK_AT((string),'\xBB',(offset)+1) \
+ && CHECK_AT((string),'\xBF',(offset)+2)) /* BOM (#xFEFF) */
+
+#define IS_BOM(string) IS_BOM_AT(string,0)
+
+/*
+ * Check if the character at the specified position is space.
+ */
+
+#define IS_SPACE_AT(string,offset) CHECK_AT((string),' ',(offset))
+
+#define IS_SPACE(string) IS_SPACE_AT((string),0)
+
+/*
+ * Check if the character at the specified position is tab.
+ */
+
+#define IS_TAB_AT(string,offset) CHECK_AT((string),'\t',(offset))
+
+#define IS_TAB(string) IS_TAB_AT((string),0)
+
+/*
+ * Check if the character at the specified position is blank (space or tab).
+ */
+
+#define IS_BLANK_AT(string,offset) \
+ (IS_SPACE_AT((string),(offset)) || IS_TAB_AT((string),(offset)))
+
+#define IS_BLANK(string) IS_BLANK_AT((string),0)
+
+/*
+ * Check if the character at the specified position is a line break.
+ */
+
+#define IS_BREAK_AT(string,offset) \
+ (CHECK_AT((string),'\r',(offset)) /* CR (#xD)*/ \
+ || CHECK_AT((string),'\n',(offset)) /* LF (#xA) */ \
+ || (CHECK_AT((string),'\xC2',(offset)) \
+ && CHECK_AT((string),'\x85',(offset)+1)) /* NEL (#x85) */ \
+ || (CHECK_AT((string),'\xE2',(offset)) \
+ && CHECK_AT((string),'\x80',(offset)+1) \
+ && CHECK_AT((string),'\xA8',(offset)+2)) /* LS (#x2028) */ \
+ || (CHECK_AT((string),'\xE2',(offset)) \
+ && CHECK_AT((string),'\x80',(offset)+1) \
+ && CHECK_AT((string),'\xA9',(offset)+2))) /* PS (#x2029) */
+
+#define IS_BREAK(string) IS_BREAK_AT((string),0)
+
+#define IS_CRLF_AT(string,offset) \
+ (CHECK_AT((string),'\r',(offset)) && CHECK_AT((string),'\n',(offset)+1))
+
+#define IS_CRLF(string) IS_CRLF_AT((string),0)
+
+/*
+ * Check if the character is a line break or NUL.
+ */
+
+#define IS_BREAKZ_AT(string,offset) \
+ (IS_BREAK_AT((string),(offset)) || IS_Z_AT((string),(offset)))
+
+#define IS_BREAKZ(string) IS_BREAKZ_AT((string),0)
+
+/*
+ * Check if the character is a line break, space, or NUL.
+ */
+
+#define IS_SPACEZ_AT(string,offset) \
+ (IS_SPACE_AT((string),(offset)) || IS_BREAKZ_AT((string),(offset)))
+
+#define IS_SPACEZ(string) IS_SPACEZ_AT((string),0)
+
+/*
+ * Check if the character is a line break, space, tab, or NUL.
+ */
+
+#define IS_BLANKZ_AT(string,offset) \
+ (IS_BLANK_AT((string),(offset)) || IS_BREAKZ_AT((string),(offset)))
+
+#define IS_BLANKZ(string) IS_BLANKZ_AT((string),0)
+
+/*
+ * Determine the width of the character.
+ */
+
+#define WIDTH_AT(string,offset) \
+ (((string).pointer[offset] & 0x80) == 0x00 ? 1 : \
+ ((string).pointer[offset] & 0xE0) == 0xC0 ? 2 : \
+ ((string).pointer[offset] & 0xF0) == 0xE0 ? 3 : \
+ ((string).pointer[offset] & 0xF8) == 0xF0 ? 4 : 0)
+
+#define WIDTH(string) WIDTH_AT((string),0)
+
+/*
+ * Move the string pointer to the next character.
+ */
+
+#define MOVE(string) ((string).pointer += WIDTH((string)))
+
+/*
+ * Copy a character and move the pointers of both strings.
+ */
+
+#define COPY(string_a,string_b) \
+ ((*(string_b).pointer & 0x80) == 0x00 ? \
+ (*((string_a).pointer++) = *((string_b).pointer++)) : \
+ (*(string_b).pointer & 0xE0) == 0xC0 ? \
+ (*((string_a).pointer++) = *((string_b).pointer++), \
+ *((string_a).pointer++) = *((string_b).pointer++)) : \
+ (*(string_b).pointer & 0xF0) == 0xE0 ? \
+ (*((string_a).pointer++) = *((string_b).pointer++), \
+ *((string_a).pointer++) = *((string_b).pointer++), \
+ *((string_a).pointer++) = *((string_b).pointer++)) : \
+ (*(string_b).pointer & 0xF8) == 0xF0 ? \
+ (*((string_a).pointer++) = *((string_b).pointer++), \
+ *((string_a).pointer++) = *((string_b).pointer++), \
+ *((string_a).pointer++) = *((string_b).pointer++), \
+ *((string_a).pointer++) = *((string_b).pointer++)) : 0)
+
+/*
+ * Stack and queue management.
+ */
+
+YAML_DECLARE(int)
+yaml_stack_extend(void **start, void **top, void **end);
+
+YAML_DECLARE(int)
+yaml_queue_extend(void **start, void **head, void **tail, void **end);
+
+#define STACK_INIT(context,stack,size) \
+ (((stack).start = yaml_malloc((size)*sizeof(*(stack).start))) ? \
+ ((stack).top = (stack).start, \
+ (stack).end = (stack).start+(size), \
+ 1) : \
+ ((context)->error = YAML_MEMORY_ERROR, \
+ 0))
+
+#define STACK_DEL(context,stack) \
+ (yaml_free((stack).start), \
+ (stack).start = (stack).top = (stack).end = 0)
+
+#define STACK_EMPTY(context,stack) \
+ ((void)(context), \
+ ((stack).start == (stack).top))
+
+#define STACK_LIMIT(context,stack,size) \
+ ((stack).top - (stack).start < (size) ? \
+ 1 : \
+ ((context)->error = YAML_MEMORY_ERROR, \
+ 0))
+
+#define PUSH(context,stack,value) \
+ (((stack).top != (stack).end \
+ || yaml_stack_extend((void **)&(stack).start, \
+ (void **)&(stack).top, (void **)&(stack).end)) ? \
+ (*((stack).top++) = value, \
+ 1) : \
+ ((context)->error = YAML_MEMORY_ERROR, \
+ 0))
+
+#define POP(context,stack) \
+ (*(--(stack).top))
+
+#define QUEUE_INIT(context,queue,size) \
+ (((queue).start = yaml_malloc((size)*sizeof(*(queue).start))) ? \
+ ((queue).head = (queue).tail = (queue).start, \
+ (queue).end = (queue).start+(size), \
+ 1) : \
+ ((context)->error = YAML_MEMORY_ERROR, \
+ 0))
+
+#define QUEUE_DEL(context,queue) \
+ (yaml_free((queue).start), \
+ (queue).start = (queue).head = (queue).tail = (queue).end = 0)
+
+#define QUEUE_EMPTY(context,queue) \
+ ((queue).head == (queue).tail)
+
+#define ENQUEUE(context,queue,value) \
+ (((queue).tail != (queue).end \
+ || yaml_queue_extend((void **)&(queue).start, (void **)&(queue).head, \
+ (void **)&(queue).tail, (void **)&(queue).end)) ? \
+ (*((queue).tail++) = value, \
+ 1) : \
+ ((context)->error = YAML_MEMORY_ERROR, \
+ 0))
+
+#define DEQUEUE(context,queue) \
+ (*((queue).head++))
+
+#define QUEUE_INSERT(context,queue,index,value) \
+ (((queue).tail != (queue).end \
+ || yaml_queue_extend((void **)&(queue).start, (void **)&(queue).head, \
+ (void **)&(queue).tail, (void **)&(queue).end)) ? \
+ (memmove((queue).head+(index)+1,(queue).head+(index), \
+ ((queue).tail-(queue).head-(index))*sizeof(*(queue).start)), \
+ *((queue).head+(index)) = value, \
+ (queue).tail++, \
+ 1) : \
+ ((context)->error = YAML_MEMORY_ERROR, \
+ 0))
+
+/*
+ * Token initializers.
+ */
+
+#define TOKEN_INIT(token,token_type,token_start_mark,token_end_mark) \
+ (memset(&(token), 0, sizeof(yaml_token_t)), \
+ (token).type = (token_type), \
+ (token).start_mark = (token_start_mark), \
+ (token).end_mark = (token_end_mark))
+
+#define STREAM_START_TOKEN_INIT(token,token_encoding,start_mark,end_mark) \
+ (TOKEN_INIT((token),YAML_STREAM_START_TOKEN,(start_mark),(end_mark)), \
+ (token).data.stream_start.encoding = (token_encoding))
+
+#define STREAM_END_TOKEN_INIT(token,start_mark,end_mark) \
+ (TOKEN_INIT((token),YAML_STREAM_END_TOKEN,(start_mark),(end_mark)))
+
+#define ALIAS_TOKEN_INIT(token,token_value,start_mark,end_mark) \
+ (TOKEN_INIT((token),YAML_ALIAS_TOKEN,(start_mark),(end_mark)), \
+ (token).data.alias.value = (token_value))
+
+#define ANCHOR_TOKEN_INIT(token,token_value,start_mark,end_mark) \
+ (TOKEN_INIT((token),YAML_ANCHOR_TOKEN,(start_mark),(end_mark)), \
+ (token).data.anchor.value = (token_value))
+
+#define TAG_TOKEN_INIT(token,token_handle,token_suffix,start_mark,end_mark) \
+ (TOKEN_INIT((token),YAML_TAG_TOKEN,(start_mark),(end_mark)), \
+ (token).data.tag.handle = (token_handle), \
+ (token).data.tag.suffix = (token_suffix))
+
+#define SCALAR_TOKEN_INIT(token,token_value,token_length,token_style,start_mark,end_mark) \
+ (TOKEN_INIT((token),YAML_SCALAR_TOKEN,(start_mark),(end_mark)), \
+ (token).data.scalar.value = (token_value), \
+ (token).data.scalar.length = (token_length), \
+ (token).data.scalar.style = (token_style))
+
+#define VERSION_DIRECTIVE_TOKEN_INIT(token,token_major,token_minor,start_mark,end_mark) \
+ (TOKEN_INIT((token),YAML_VERSION_DIRECTIVE_TOKEN,(start_mark),(end_mark)), \
+ (token).data.version_directive.major = (token_major), \
+ (token).data.version_directive.minor = (token_minor))
+
+#define TAG_DIRECTIVE_TOKEN_INIT(token,token_handle,token_prefix,start_mark,end_mark) \
+ (TOKEN_INIT((token),YAML_TAG_DIRECTIVE_TOKEN,(start_mark),(end_mark)), \
+ (token).data.tag_directive.handle = (token_handle), \
+ (token).data.tag_directive.prefix = (token_prefix))
+
+/*
+ * Event initializers.
+ */
+
+#define EVENT_INIT(event,event_type,event_start_mark,event_end_mark) \
+ (memset(&(event), 0, sizeof(yaml_event_t)), \
+ (event).type = (event_type), \
+ (event).start_mark = (event_start_mark), \
+ (event).end_mark = (event_end_mark))
+
+#define STREAM_START_EVENT_INIT(event,event_encoding,start_mark,end_mark) \
+ (EVENT_INIT((event),YAML_STREAM_START_EVENT,(start_mark),(end_mark)), \
+ (event).data.stream_start.encoding = (event_encoding))
+
+#define STREAM_END_EVENT_INIT(event,start_mark,end_mark) \
+ (EVENT_INIT((event),YAML_STREAM_END_EVENT,(start_mark),(end_mark)))
+
+#define DOCUMENT_START_EVENT_INIT(event,event_version_directive, \
+ event_tag_directives_start,event_tag_directives_end,event_implicit,start_mark,end_mark) \
+ (EVENT_INIT((event),YAML_DOCUMENT_START_EVENT,(start_mark),(end_mark)), \
+ (event).data.document_start.version_directive = (event_version_directive), \
+ (event).data.document_start.tag_directives.start = (event_tag_directives_start), \
+ (event).data.document_start.tag_directives.end = (event_tag_directives_end), \
+ (event).data.document_start.implicit = (event_implicit))
+
+#define DOCUMENT_END_EVENT_INIT(event,event_implicit,start_mark,end_mark) \
+ (EVENT_INIT((event),YAML_DOCUMENT_END_EVENT,(start_mark),(end_mark)), \
+ (event).data.document_end.implicit = (event_implicit))
+
+#define ALIAS_EVENT_INIT(event,event_anchor,start_mark,end_mark) \
+ (EVENT_INIT((event),YAML_ALIAS_EVENT,(start_mark),(end_mark)), \
+ (event).data.alias.anchor = (event_anchor))
+
+#define SCALAR_EVENT_INIT(event,event_anchor,event_tag,event_value,event_length, \
+ event_plain_implicit, event_quoted_implicit,event_style,start_mark,end_mark) \
+ (EVENT_INIT((event),YAML_SCALAR_EVENT,(start_mark),(end_mark)), \
+ (event).data.scalar.anchor = (event_anchor), \
+ (event).data.scalar.tag = (event_tag), \
+ (event).data.scalar.value = (event_value), \
+ (event).data.scalar.length = (event_length), \
+ (event).data.scalar.plain_implicit = (event_plain_implicit), \
+ (event).data.scalar.quoted_implicit = (event_quoted_implicit), \
+ (event).data.scalar.style = (event_style))
+
+#define SEQUENCE_START_EVENT_INIT(event,event_anchor,event_tag, \
+ event_implicit,event_style,start_mark,end_mark) \
+ (EVENT_INIT((event),YAML_SEQUENCE_START_EVENT,(start_mark),(end_mark)), \
+ (event).data.sequence_start.anchor = (event_anchor), \
+ (event).data.sequence_start.tag = (event_tag), \
+ (event).data.sequence_start.implicit = (event_implicit), \
+ (event).data.sequence_start.style = (event_style))
+
+#define SEQUENCE_END_EVENT_INIT(event,start_mark,end_mark) \
+ (EVENT_INIT((event),YAML_SEQUENCE_END_EVENT,(start_mark),(end_mark)))
+
+#define MAPPING_START_EVENT_INIT(event,event_anchor,event_tag, \
+ event_implicit,event_style,start_mark,end_mark) \
+ (EVENT_INIT((event),YAML_MAPPING_START_EVENT,(start_mark),(end_mark)), \
+ (event).data.mapping_start.anchor = (event_anchor), \
+ (event).data.mapping_start.tag = (event_tag), \
+ (event).data.mapping_start.implicit = (event_implicit), \
+ (event).data.mapping_start.style = (event_style))
+
+#define MAPPING_END_EVENT_INIT(event,start_mark,end_mark) \
+ (EVENT_INIT((event),YAML_MAPPING_END_EVENT,(start_mark),(end_mark)))
+
+/*
+ * Document initializer.
+ */
+
+#define DOCUMENT_INIT(document,document_nodes_start,document_nodes_end, \
+ document_version_directive,document_tag_directives_start, \
+ document_tag_directives_end,document_start_implicit, \
+ document_end_implicit,document_start_mark,document_end_mark) \
+ (memset(&(document), 0, sizeof(yaml_document_t)), \
+ (document).nodes.start = (document_nodes_start), \
+ (document).nodes.end = (document_nodes_end), \
+ (document).nodes.top = (document_nodes_start), \
+ (document).version_directive = (document_version_directive), \
+ (document).tag_directives.start = (document_tag_directives_start), \
+ (document).tag_directives.end = (document_tag_directives_end), \
+ (document).start_implicit = (document_start_implicit), \
+ (document).end_implicit = (document_end_implicit), \
+ (document).start_mark = (document_start_mark), \
+ (document).end_mark = (document_end_mark))
+
+/*
+ * Node initializers.
+ */
+
+#define NODE_INIT(node,node_type,node_tag,node_start_mark,node_end_mark) \
+ (memset(&(node), 0, sizeof(yaml_node_t)), \
+ (node).type = (node_type), \
+ (node).tag = (node_tag), \
+ (node).start_mark = (node_start_mark), \
+ (node).end_mark = (node_end_mark))
+
+#define SCALAR_NODE_INIT(node,node_tag,node_value,node_length, \
+ node_style,start_mark,end_mark) \
+ (NODE_INIT((node),YAML_SCALAR_NODE,(node_tag),(start_mark),(end_mark)), \
+ (node).data.scalar.value = (node_value), \
+ (node).data.scalar.length = (node_length), \
+ (node).data.scalar.style = (node_style))
+
+#define SEQUENCE_NODE_INIT(node,node_tag,node_items_start,node_items_end, \
+ node_style,start_mark,end_mark) \
+ (NODE_INIT((node),YAML_SEQUENCE_NODE,(node_tag),(start_mark),(end_mark)), \
+ (node).data.sequence.items.start = (node_items_start), \
+ (node).data.sequence.items.end = (node_items_end), \
+ (node).data.sequence.items.top = (node_items_start), \
+ (node).data.sequence.style = (node_style))
+
+#define MAPPING_NODE_INIT(node,node_tag,node_pairs_start,node_pairs_end, \
+ node_style,start_mark,end_mark) \
+ (NODE_INIT((node),YAML_MAPPING_NODE,(node_tag),(start_mark),(end_mark)), \
+ (node).data.mapping.pairs.start = (node_pairs_start), \
+ (node).data.mapping.pairs.end = (node_pairs_end), \
+ (node).data.mapping.pairs.top = (node_pairs_start), \
+ (node).data.mapping.style = (node_style))
+