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-rw-r--r--jni/ruby/ext/sdbm/Makefile288
-rw-r--r--jni/ruby/ext/sdbm/_sdbm.c952
-rw-r--r--jni/ruby/ext/sdbm/depend19
-rw-r--r--jni/ruby/ext/sdbm/extconf.h4
-rw-r--r--jni/ruby/ext/sdbm/extconf.rb4
-rw-r--r--jni/ruby/ext/sdbm/init.c1065
-rw-r--r--jni/ruby/ext/sdbm/sdbm.h86
7 files changed, 2418 insertions, 0 deletions
diff --git a/jni/ruby/ext/sdbm/Makefile b/jni/ruby/ext/sdbm/Makefile
new file mode 100644
index 0000000..16cc9d2
--- /dev/null
+++ b/jni/ruby/ext/sdbm/Makefile
@@ -0,0 +1,288 @@
+
+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/sdbm
+topdir = ../..
+hdrdir = $(top_srcdir)/include
+arch_hdrdir = $(extout)/include/$(arch)
+PATH_SEPARATOR = :
+VPATH = $(srcdir):$(arch_hdrdir)/ruby:$(hdrdir)/ruby
+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)
+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 = _sdbm.c init.c
+SRCS = $(ORIG_SRCS)
+OBJS = _sdbm.o init.o
+HDRS = $(srcdir)/sdbm.h $(srcdir)/extconf.h
+TARGET = sdbm
+TARGET_NAME = sdbm
+TARGET_ENTRY = Init_$(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) $(STATIC_LIB)
+install-rb: pre-install-rb install-rb-default
+install-rb-default: pre-install-rb-default
+pre-install-rb: Makefile
+pre-install-rb-default: Makefile
+pre-install-rb-default:
+ @$(NULLCMD)
+$(TIMESTAMP_DIR)/.RUBYARCHDIR.time:
+ $(Q) $(MAKEDIRS) $(@D) $(RUBYARCHDIR)
+ $(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)
+
+# AUTOGENERATED DEPENDENCIES START
+_sdbm.o: $(RUBY_EXTCONF_H)
+_sdbm.o: $(arch_hdrdir)/ruby/config.h
+_sdbm.o: $(hdrdir)/ruby/defines.h
+_sdbm.o: $(hdrdir)/ruby/missing.h
+_sdbm.o: _sdbm.c
+_sdbm.o: sdbm.h
+init.o: $(RUBY_EXTCONF_H)
+init.o: $(arch_hdrdir)/ruby/config.h
+init.o: $(hdrdir)/ruby/defines.h
+init.o: $(hdrdir)/ruby/intern.h
+init.o: $(hdrdir)/ruby/missing.h
+init.o: $(hdrdir)/ruby/ruby.h
+init.o: $(hdrdir)/ruby/st.h
+init.o: $(hdrdir)/ruby/subst.h
+init.o: $(top_srcdir)/include/ruby.h
+init.o: init.c
+init.o: sdbm.h
+# AUTOGENERATED DEPENDENCIES END
diff --git a/jni/ruby/ext/sdbm/_sdbm.c b/jni/ruby/ext/sdbm/_sdbm.c
new file mode 100644
index 0000000..d810bef
--- /dev/null
+++ b/jni/ruby/ext/sdbm/_sdbm.c
@@ -0,0 +1,952 @@
+/*
+ * sdbm - ndbm work-alike hashed database library
+ * based on Per-Aake Larson's Dynamic Hashing algorithms. BIT 18 (1978).
+ * author: oz@nexus.yorku.ca
+ * status: public domain.
+ *
+ * core routines
+ */
+
+#include "ruby/ruby.h"
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include "sdbm.h"
+
+/*
+ * sdbm - ndbm work-alike hashed database library
+ * tuning and portability constructs [not nearly enough]
+ * author: oz@nexus.yorku.ca
+ */
+
+#define BYTESIZ 8
+
+#ifdef BSD42
+#define SEEK_SET L_SET
+#define memset(s,c,n) bzero((s), (n)) /* only when c is zero */
+#define memcpy(s1,s2,n) bcopy((s2), (s1), (n))
+#define memcmp(s1,s2,n) bcmp((s1),(s2),(n))
+#endif
+
+/*
+ * important tuning parms (hah)
+ */
+
+#ifndef SEEDUPS
+#define SEEDUPS 1 /* always detect duplicates */
+#endif
+#ifndef BADMESS
+#define BADMESS 1 /* generate a message for worst case:
+ cannot make room after SPLTMAX splits */
+#endif
+
+/*
+ * misc
+ */
+#ifdef DEBUG
+#define debug(x) printf x
+#else
+#define debug(x)
+#endif
+
+#ifdef BIG_E
+#define GET_SHORT(p, i) (((unsigned)((unsigned char *)(p))[(i)*2] << 8) + (((unsigned char *)(p))[(i)*2 + 1]))
+#define PUT_SHORT(p, i, s) (((unsigned char *)(p))[(i)*2] = (unsigned char)((s) >> 8), ((unsigned char *)(p))[(i)*2 + 1] = (unsigned char)(s))
+#else
+#define GET_SHORT(p, i) ((p)[(i)])
+#define PUT_SHORT(p, i, s) ((p)[(i)] = (s))
+#endif
+
+/*#include "pair.h"*/
+static int fitpair proto((char *, int));
+static void putpair proto((char *, datum, datum));
+static datum getpair proto((char *, datum));
+static int delpair proto((char *, datum));
+static int chkpage proto((char *));
+static datum getnkey proto((char *, int));
+static void splpage proto((char *, char *, long));
+#if SEEDUPS
+static int duppair proto((char *, datum));
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef DOSISH
+#include <io.h>
+#endif
+#include <sys/types.h>
+#include <sys/stat.h>
+#ifdef BSD42
+#include <sys/file.h>
+#else
+#include <fcntl.h>
+/*#include <memory.h>*/
+#endif
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
+
+#include <errno.h>
+#ifndef EPERM
+#define EPERM EACCES
+#endif
+#include <string.h>
+
+#ifdef __STDC__
+#include <stddef.h>
+#endif
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+/*
+ * externals
+ */
+#if !defined(__sun) && !defined(_WIN32) && !defined(__CYGWIN__) && !defined(errno)
+extern int errno;
+#endif
+
+/*
+ * forward
+ */
+static int getdbit proto((DBM *, long));
+static int setdbit proto((DBM *, long));
+static int getpage proto((DBM *, long));
+static datum getnext proto((DBM *));
+static int makroom proto((DBM *, long, int));
+
+/*
+ * useful macros
+ */
+#define bad(x) ((x).dptr == NULL || (x).dsize < 0)
+#define exhash(item) sdbm_hash((item).dptr, (item).dsize)
+#define ioerr(db) ((db)->flags |= DBM_IOERR)
+
+#define OFF_PAG(off) (long) (off) * PBLKSIZ
+#define OFF_DIR(off) (long) (off) * DBLKSIZ
+
+static long masks[] = {
+ 000000000000L, 000000000001L, 000000000003L,
+ 000000000007L, 000000000017L, 000000000037L,
+ 000000000077L, 000000000177L, 000000000377L,
+ 000000000777L, 000000001777L, 000000003777L,
+ 000000007777L, 000000017777L, 000000037777L,
+ 000000077777L, 000000177777L, 000000377777L,
+ 000000777777L, 000001777777L, 000003777777L,
+ 000007777777L, 000017777777L, 000037777777L,
+ 000077777777L, 000177777777L, 000377777777L,
+ 000777777777L, 001777777777L, 003777777777L,
+ 007777777777L, 017777777777L
+};
+
+datum nullitem = {NULL, 0};
+
+DBM *
+sdbm_open(register char *file, register int flags, register int mode)
+{
+ register DBM *db;
+ register char *dirname;
+ register char *pagname;
+ register size_t n;
+
+ if (file == NULL || !*file)
+ return errno = EINVAL, (DBM *) NULL;
+/*
+ * need space for two separate filenames
+ */
+ n = strlen(file) * 2 + strlen(DIRFEXT) + strlen(PAGFEXT) + 2;
+
+ if ((dirname = malloc(n)) == NULL)
+ return errno = ENOMEM, (DBM *) NULL;
+/*
+ * build the file names
+ */
+ dirname = strcat(strcpy(dirname, file), DIRFEXT);
+ pagname = strcpy(dirname + strlen(dirname) + 1, file);
+ pagname = strcat(pagname, PAGFEXT);
+
+ db = sdbm_prep(dirname, pagname, flags, mode);
+ free((char *) dirname);
+ return db;
+}
+
+static int
+fd_set_cloexec(int fd)
+{
+ /* MinGW don't have F_GETFD and FD_CLOEXEC. [ruby-core:40281] */
+#ifdef F_GETFD
+ int flags, ret;
+ flags = fcntl(fd, F_GETFD); /* should not fail except EBADF. */
+ if (flags == -1) {
+ return -1;
+ }
+ if (2 < fd) {
+ if (!(flags & FD_CLOEXEC)) {
+ flags |= FD_CLOEXEC;
+ ret = fcntl(fd, F_SETFD, flags);
+ if (ret == -1) {
+ return -1;
+ }
+ }
+ }
+#endif
+ return 0;
+}
+
+DBM *
+sdbm_prep(char *dirname, char *pagname, int flags, int mode)
+{
+ register DBM *db;
+ struct stat dstat;
+
+ if ((db = (DBM *) malloc(sizeof(DBM))) == NULL)
+ return errno = ENOMEM, (DBM *) NULL;
+
+ db->pagf = -1;
+ db->dirf = -1;
+ db->flags = 0;
+ db->hmask = 0;
+ db->blkptr = 0;
+ db->keyptr = 0;
+/*
+ * adjust user flags so that WRONLY becomes RDWR,
+ * as required by this package. Also set our internal
+ * flag for RDONLY.
+ */
+ if (flags & O_WRONLY)
+ flags = (flags & ~O_WRONLY) | O_RDWR;
+ if (flags & O_RDONLY)
+ db->flags = DBM_RDONLY;
+/*
+ * open the files in sequence, and stat the dirfile.
+ * If we fail anywhere, undo everything, return NULL.
+ */
+ flags |= O_BINARY;
+#ifdef O_CLOEXEC
+ flags |= O_CLOEXEC;
+#endif
+
+ if ((db->pagf = open(pagname, flags, mode)) == -1) goto err;
+ if (fd_set_cloexec(db->pagf) == -1) goto err;
+ if ((db->dirf = open(dirname, flags, mode)) == -1) goto err;
+ if (fd_set_cloexec(db->dirf) == -1) goto err;
+/*
+ * need the dirfile size to establish max bit number.
+ */
+ if (fstat(db->dirf, &dstat) == -1) goto err;
+/*
+ * zero size: either a fresh database, or one with a single,
+ * unsplit data page: dirpage is all zeros.
+ */
+ db->dirbno = (!dstat.st_size) ? 0 : -1;
+ db->pagbno = -1;
+ db->maxbno = dstat.st_size * (long) BYTESIZ;
+
+ (void) memset(db->pagbuf, 0, PBLKSIZ);
+ (void) memset(db->dirbuf, 0, DBLKSIZ);
+/*
+ * success
+ */
+ return db;
+
+ err:
+ if (db->pagf != -1)
+ (void) close(db->pagf);
+ if (db->dirf != -1)
+ (void) close(db->dirf);
+ free((char *) db);
+ return (DBM *) NULL;
+}
+
+void
+sdbm_close(register DBM *db)
+{
+ if (db == NULL)
+ errno = EINVAL;
+ else {
+ (void) close(db->dirf);
+ (void) close(db->pagf);
+ free((char *) db);
+ }
+}
+
+datum
+sdbm_fetch(register DBM *db, datum key)
+{
+ if (db == NULL || bad(key))
+ return errno = EINVAL, nullitem;
+
+ if (getpage(db, exhash(key)))
+ return getpair(db->pagbuf, key);
+
+ return ioerr(db), nullitem;
+}
+
+int
+sdbm_delete(register DBM *db, datum key)
+{
+ if (db == NULL || bad(key))
+ return errno = EINVAL, -1;
+ if (sdbm_rdonly(db))
+ return errno = EPERM, -1;
+
+ if (getpage(db, exhash(key))) {
+ if (!delpair(db->pagbuf, key))
+ return -1;
+/*
+ * update the page file
+ */
+ if (lseek(db->pagf, OFF_PAG(db->pagbno), SEEK_SET) < 0
+ || write(db->pagf, db->pagbuf, PBLKSIZ) < 0)
+ return ioerr(db), -1;
+
+ return 0;
+ }
+
+ return ioerr(db), -1;
+}
+
+int
+sdbm_store(register DBM *db, datum key, datum val, int flags)
+{
+ int need;
+ register long hash;
+
+ if (db == NULL || bad(key))
+ return errno = EINVAL, -1;
+ if (sdbm_rdonly(db))
+ return errno = EPERM, -1;
+
+ need = key.dsize + val.dsize;
+/*
+ * is the pair too big (or too small) for this database ??
+ */
+ if (need < 0 || need > PAIRMAX)
+ return errno = EINVAL, -1;
+
+ if (getpage(db, (hash = exhash(key)))) {
+/*
+ * if we need to replace, delete the key/data pair
+ * first. If it is not there, ignore.
+ */
+ if (flags == DBM_REPLACE)
+ (void) delpair(db->pagbuf, key);
+#if SEEDUPS
+ else if (duppair(db->pagbuf, key))
+ return 1;
+#endif
+/*
+ * if we do not have enough room, we have to split.
+ */
+ if (!fitpair(db->pagbuf, need))
+ if (!makroom(db, hash, need))
+ return ioerr(db), -1;
+/*
+ * we have enough room or split is successful. insert the key,
+ * and update the page file.
+ */
+ (void) putpair(db->pagbuf, key, val);
+
+ if (lseek(db->pagf, OFF_PAG(db->pagbno), SEEK_SET) < 0
+ || write(db->pagf, db->pagbuf, PBLKSIZ) < 0)
+ return ioerr(db), -1;
+ /*
+ * success
+ */
+ return 0;
+ }
+
+ return ioerr(db), -1;
+}
+
+/*
+ * makroom - make room by splitting the overfull page
+ * this routine will attempt to make room for SPLTMAX times before
+ * giving up.
+ */
+static int
+makroom(register DBM *db, long int hash, int need)
+{
+ long newp;
+ char twin[PBLKSIZ];
+#if defined _WIN32 && !defined __CYGWIN__
+ char zer[PBLKSIZ];
+ long oldtail;
+#endif
+ char *pag = db->pagbuf;
+ char *new = twin;
+ register int smax = SPLTMAX;
+
+ do {
+/*
+ * split the current page
+ */
+ (void) splpage(pag, new, db->hmask + 1);
+/*
+ * address of the new page
+ */
+ newp = (hash & db->hmask) | (db->hmask + 1);
+ debug(("newp: %ld\n", newp));
+/*
+ * write delay, read avoidance/cache shuffle:
+ * select the page for incoming pair: if key is to go to the new page,
+ * write out the previous one, and copy the new one over, thus making
+ * it the current page. If not, simply write the new page, and we are
+ * still looking at the page of interest. current page is not updated
+ * here, as sdbm_store will do so, after it inserts the incoming pair.
+ */
+
+#if defined _WIN32 && !defined __CYGWIN__
+ /*
+ * Fill hole with 0 if made it.
+ * (hole is NOT read as 0)
+ */
+ oldtail = lseek(db->pagf, 0L, SEEK_END);
+ memset(zer, 0, PBLKSIZ);
+ while (OFF_PAG(newp) > oldtail) {
+ if (lseek(db->pagf, 0L, SEEK_END) < 0 ||
+ write(db->pagf, zer, PBLKSIZ) < 0) {
+
+ return 0;
+ }
+ oldtail += PBLKSIZ;
+ }
+#endif
+
+ if (hash & (db->hmask + 1)) {
+ if (lseek(db->pagf, OFF_PAG(db->pagbno), SEEK_SET) < 0
+ || write(db->pagf, db->pagbuf, PBLKSIZ) < 0)
+ return 0;
+ db->pagbno = newp;
+ (void) memcpy(pag, new, PBLKSIZ);
+ }
+ else if (lseek(db->pagf, OFF_PAG(newp), SEEK_SET) < 0
+ || write(db->pagf, new, PBLKSIZ) < 0)
+ return 0;
+
+ if (!setdbit(db, db->curbit))
+ return 0;
+/*
+ * see if we have enough room now
+ */
+ if (fitpair(pag, need))
+ return 1;
+/*
+ * try again... update curbit and hmask as getpage would have
+ * done. because of our update of the current page, we do not
+ * need to read in anything. BUT we have to write the current
+ * [deferred] page out, as the window of failure is too great.
+ */
+ db->curbit = 2 * db->curbit +
+ ((hash & (db->hmask + 1)) ? 2 : 1);
+ db->hmask |= (db->hmask + 1);
+
+ if (lseek(db->pagf, OFF_PAG(db->pagbno), SEEK_SET) < 0
+ || write(db->pagf, db->pagbuf, PBLKSIZ) < 0)
+ return 0;
+
+ } while (--smax);
+/*
+ * if we are here, this is real bad news. After SPLTMAX splits,
+ * we still cannot fit the key. say goodnight.
+ */
+#if BADMESS
+ (void) (write(2, "sdbm: cannot insert after SPLTMAX attempts.\n", 44) < 0);
+#endif
+ return 0;
+
+}
+
+/*
+ * the following two routines will break if
+ * deletions aren't taken into account. (ndbm bug)
+ */
+datum
+sdbm_firstkey(register DBM *db)
+{
+ if (db == NULL)
+ return errno = EINVAL, nullitem;
+/*
+ * start at page 0
+ */
+ (void) memset(db->pagbuf, 0, PBLKSIZ);
+ if (lseek(db->pagf, OFF_PAG(0), SEEK_SET) < 0
+ || read(db->pagf, db->pagbuf, PBLKSIZ) < 0)
+ return ioerr(db), nullitem;
+ db->pagbno = 0;
+ db->blkptr = 0;
+ db->keyptr = 0;
+
+ return getnext(db);
+}
+
+datum
+sdbm_nextkey(register DBM *db)
+{
+ if (db == NULL)
+ return errno = EINVAL, nullitem;
+ return getnext(db);
+}
+
+/*
+ * all important binary trie traversal
+ */
+static int
+getpage(register DBM *db, register long int hash)
+{
+ register int hbit;
+ register long dbit;
+ register long pagb;
+
+ dbit = 0;
+ hbit = 0;
+ while (dbit < db->maxbno && getdbit(db, dbit))
+ dbit = 2 * dbit + ((hash & ((long) 1 << hbit++)) ? 2 : 1);
+
+ debug(("dbit: %d...", dbit));
+
+ db->curbit = dbit;
+ db->hmask = masks[hbit];
+
+ pagb = hash & db->hmask;
+/*
+ * see if the block we need is already in memory.
+ * note: this lookaside cache has about 10% hit rate.
+ */
+ if (pagb != db->pagbno) {
+/*
+ * note: here, we assume a "hole" is read as 0s.
+ * if not, must zero pagbuf first.
+ */
+ (void) memset(db->pagbuf, 0, PBLKSIZ);
+
+ if (lseek(db->pagf, OFF_PAG(pagb), SEEK_SET) < 0
+ || read(db->pagf, db->pagbuf, PBLKSIZ) < 0)
+ return 0;
+ if (!chkpage(db->pagbuf)) {
+ return 0;
+ }
+ db->pagbno = pagb;
+
+ debug(("pag read: %d\n", pagb));
+ }
+ return 1;
+}
+
+static int
+getdbit(register DBM *db, register long int dbit)
+{
+ register long c;
+ register long dirb;
+
+ c = dbit / BYTESIZ;
+ dirb = c / DBLKSIZ;
+
+ if (dirb != db->dirbno) {
+ if (lseek(db->dirf, OFF_DIR(dirb), SEEK_SET) < 0
+ || read(db->dirf, db->dirbuf, DBLKSIZ) < 0)
+ return 0;
+ db->dirbno = dirb;
+
+ debug(("dir read: %d\n", dirb));
+ }
+
+ return db->dirbuf[c % DBLKSIZ] & (1 << (dbit % BYTESIZ));
+}
+
+static int
+setdbit(register DBM *db, register long int dbit)
+{
+ register long c;
+ register long dirb;
+
+ c = dbit / BYTESIZ;
+ dirb = c / DBLKSIZ;
+
+ if (dirb != db->dirbno) {
+ if (lseek(db->dirf, OFF_DIR(dirb), SEEK_SET) < 0
+ || read(db->dirf, db->dirbuf, DBLKSIZ) < 0)
+ return 0;
+ db->dirbno = dirb;
+
+ debug(("dir read: %d\n", dirb));
+ }
+
+ db->dirbuf[c % DBLKSIZ] |= (1 << (dbit % BYTESIZ));
+
+ if (dbit >= db->maxbno)
+ db->maxbno += (long) DBLKSIZ * BYTESIZ;
+
+ if (lseek(db->dirf, OFF_DIR(dirb), SEEK_SET) < 0
+ || write(db->dirf, db->dirbuf, DBLKSIZ) < 0)
+ return 0;
+
+ return 1;
+}
+
+/*
+ * getnext - get the next key in the page, and if done with
+ * the page, try the next page in sequence
+ */
+static datum
+getnext(register DBM *db)
+{
+ datum key;
+
+ for (;;) {
+ db->keyptr++;
+ key = getnkey(db->pagbuf, db->keyptr);
+ if (key.dptr != NULL)
+ return key;
+/*
+ * we either run out, or there is nothing on this page..
+ * try the next one... If we lost our position on the
+ * file, we will have to seek.
+ */
+ db->keyptr = 0;
+ if (db->pagbno != db->blkptr++)
+ if (lseek(db->pagf, OFF_PAG(db->blkptr), SEEK_SET) < 0)
+ break;
+ db->pagbno = db->blkptr;
+ if (read(db->pagf, db->pagbuf, PBLKSIZ) <= 0)
+ break;
+ if (!chkpage(db->pagbuf)) {
+ break;
+ }
+ }
+
+ return ioerr(db), nullitem;
+}
+
+/* pair.c */
+/*
+ * sdbm - ndbm work-alike hashed database library
+ * based on Per-Aake Larson's Dynamic Hashing algorithms. BIT 18 (1978).
+ * author: oz@nexus.yorku.ca
+ * status: public domain.
+ *
+ * page-level routines
+ */
+
+#ifndef BSD42
+/*#include <memory.h>*/
+#endif
+
+#define exhash(item) sdbm_hash((item).dptr, (item).dsize)
+
+/*
+ * forward
+ */
+static int seepair proto((char *, int, char *, int));
+
+/*
+ * page format:
+ * +------------------------------+
+ * ino | n | keyoff | datoff | keyoff |
+ * +------------+--------+--------+
+ * | datoff | - - - ----> |
+ * +--------+---------------------+
+ * | F R E E A R E A |
+ * +--------------+---------------+
+ * | <---- - - - | data |
+ * +--------+-----+----+----------+
+ * | key | data | key |
+ * +--------+----------+----------+
+ *
+ * calculating the offsets for free area: if the number
+ * of entries (ino[0]) is zero, the offset to the END of
+ * the free area is the block size. Otherwise, it is the
+ * nth (ino[ino[0]]) entry's offset.
+ */
+
+static int
+fitpair(char *pag, int need)
+{
+ register int n;
+ register int off;
+ register int free;
+ register short *ino = (short *) pag;
+
+ off = ((n = GET_SHORT(ino,0)) > 0) ? GET_SHORT(ino,n) : PBLKSIZ;
+ free = off - (n + 1) * (int)sizeof(short);
+ need += 2 * (int)sizeof(short);
+
+ debug(("free %d need %d\n", free, need));
+
+ return need <= free;
+}
+
+static void
+putpair(char *pag, datum key, datum val)
+{
+ register int n;
+ register int off;
+ register short *ino = (short *) pag;
+
+ off = ((n = GET_SHORT(ino,0)) > 0) ? GET_SHORT(ino,n) : PBLKSIZ;
+/*
+ * enter the key first
+ */
+ off -= key.dsize;
+ if (key.dsize)
+ (void) memcpy(pag + off, key.dptr, key.dsize);
+ PUT_SHORT(ino,n + 1,off);
+/*
+ * now the data
+ */
+ off -= val.dsize;
+ if (val.dsize)
+ (void) memcpy(pag + off, val.dptr, val.dsize);
+ PUT_SHORT(ino,n + 2,off);
+/*
+ * adjust item count
+ */
+ PUT_SHORT(ino,0,GET_SHORT(ino,0) + 2);
+}
+
+static datum
+getpair(char *pag, datum key)
+{
+ register int i;
+ register int n;
+ datum val;
+ register short *ino = (short *) pag;
+
+ if ((n = GET_SHORT(ino,0)) == 0)
+ return nullitem;
+
+ if ((i = seepair(pag, n, key.dptr, key.dsize)) == 0)
+ return nullitem;
+
+ val.dptr = pag + GET_SHORT(ino,i + 1);
+ val.dsize = GET_SHORT(ino,i) - GET_SHORT(ino,i + 1);
+ return val;
+}
+
+#if SEEDUPS
+static int
+duppair(char *pag, datum key)
+{
+ register short *ino = (short *) pag;
+ return GET_SHORT(ino,0) > 0 &&
+ seepair(pag, GET_SHORT(ino,0), key.dptr, key.dsize) > 0;
+}
+#endif
+
+static datum
+getnkey(char *pag, int num)
+{
+ datum key;
+ register int off;
+ register short *ino = (short *) pag;
+
+ num = num * 2 - 1;
+ if (GET_SHORT(ino,0) == 0 || num > GET_SHORT(ino,0))
+ return nullitem;
+
+ off = (num > 1) ? GET_SHORT(ino,num - 1) : PBLKSIZ;
+
+ key.dptr = pag + GET_SHORT(ino,num);
+ key.dsize = off - GET_SHORT(ino,num);
+
+ return key;
+}
+
+static int
+delpair(char *pag, datum key)
+{
+ register int n;
+ register int i;
+ register short *ino = (short *) pag;
+
+ if ((n = GET_SHORT(ino,0)) == 0)
+ return 0;
+
+ if ((i = seepair(pag, n, key.dptr, key.dsize)) == 0)
+ return 0;
+/*
+ * found the key. if it is the last entry
+ * [i.e. i == n - 1] we just adjust the entry count.
+ * hard case: move all data down onto the deleted pair,
+ * shift offsets onto deleted offsets, and adjust them.
+ * [note: 0 < i < n]
+ */
+ if (i < n - 1) {
+ register int m;
+ register char *dst = pag + (i == 1 ? PBLKSIZ : GET_SHORT(ino,i - 1));
+ register char *src = pag + GET_SHORT(ino,i + 1);
+ register ptrdiff_t zoo = dst - src;
+
+ debug(("free-up %"PRIdPTRDIFF" ", zoo));
+/*
+ * shift data/keys down
+ */
+ m = GET_SHORT(ino,i + 1) - GET_SHORT(ino,n);
+#ifdef DUFF
+#define MOVB *--dst = *--src
+
+ if (m > 0) {
+ register int loop = (m + 8 - 1) >> 3;
+
+ switch (m & (8 - 1)) {
+ case 0: do {
+ MOVB; case 7: MOVB;
+ case 6: MOVB; case 5: MOVB;
+ case 4: MOVB; case 3: MOVB;
+ case 2: MOVB; case 1: MOVB;
+ } while (--loop);
+ }
+ }
+#else
+#ifdef MEMMOVE
+ memmove(dst-m, src-m, m);
+#else
+ while (m--)
+ *--dst = *--src;
+#endif
+#endif
+/*
+ * adjust offset index up
+ */
+ while (i < n - 1) {
+ PUT_SHORT(ino,i, GET_SHORT(ino,i + 2) + zoo);
+ i++;
+ }
+ }
+ PUT_SHORT(ino, 0, GET_SHORT(ino, 0) - 2);
+ return 1;
+}
+
+/*
+ * search for the key in the page.
+ * return offset index in the range 0 < i < n.
+ * return 0 if not found.
+ */
+static int
+seepair(char *pag, register int n, register char *key, register int siz)
+{
+ register int i;
+ register int off = PBLKSIZ;
+ register short *ino = (short *) pag;
+
+ for (i = 1; i < n; i += 2) {
+ if (siz == off - GET_SHORT(ino,i) &&
+ memcmp(key, pag + GET_SHORT(ino,i), siz) == 0)
+ return i;
+ off = GET_SHORT(ino,i + 1);
+ }
+ return 0;
+}
+
+static void
+splpage(char *pag, char *new, long int sbit)
+{
+ datum key;
+ datum val;
+
+ register int n;
+ register int off = PBLKSIZ;
+ char cur[PBLKSIZ];
+ register short *ino = (short *) cur;
+
+ (void) memcpy(cur, pag, PBLKSIZ);
+ (void) memset(pag, 0, PBLKSIZ);
+ (void) memset(new, 0, PBLKSIZ);
+
+ n = GET_SHORT(ino,0);
+ for (ino++; n > 0; ino += 2) {
+ key.dptr = cur + GET_SHORT(ino,0);
+ key.dsize = off - GET_SHORT(ino,0);
+ val.dptr = cur + GET_SHORT(ino,1);
+ val.dsize = GET_SHORT(ino,0) - GET_SHORT(ino,1);
+/*
+ * select the page pointer (by looking at sbit) and insert
+ */
+ (void) putpair((exhash(key) & sbit) ? new : pag, key, val);
+
+ off = GET_SHORT(ino,1);
+ n -= 2;
+ }
+
+ debug(("%d split %d/%d\n", ((short *) cur)[0] / 2,
+ ((short *) new)[0] / 2,
+ ((short *) pag)[0] / 2));
+}
+
+/*
+ * check page sanity:
+ * number of entries should be something
+ * reasonable, and all offsets in the index should be in order.
+ * this could be made more rigorous.
+ */
+static int
+chkpage(char *pag)
+{
+ register int n;
+ register int off;
+ register short *ino = (short *) pag;
+
+ if ((n = GET_SHORT(ino,0)) < 0 || n > PBLKSIZ / (int)sizeof(short))
+ return 0;
+
+ if (n > 0) {
+ off = PBLKSIZ;
+ for (ino++; n > 0; ino += 2) {
+ if (GET_SHORT(ino,0) > off || GET_SHORT(ino,1) > off ||
+ GET_SHORT(ino,1) > GET_SHORT(ino,0))
+ return 0;
+ off = GET_SHORT(ino,1);
+ n -= 2;
+ }
+ }
+ return 1;
+}
+
+/* hash.c */
+/*
+ * sdbm - ndbm work-alike hashed database library
+ * based on Per-Aake Larson's Dynamic Hashing algorithms. BIT 18 (1978).
+ * author: oz@nexus.yorku.ca
+ * status: public domain. keep it that way.
+ *
+ * hashing routine
+ */
+
+/*
+ * polynomial conversion ignoring overflows
+ * [this seems to work remarkably well, in fact better
+ * then the ndbm hash function. Replace at your own risk]
+ * use: 65599 nice.
+ * 65587 even better.
+ */
+long
+sdbm_hash(register char *str, register int len)
+{
+ register unsigned long n = 0;
+
+#ifdef DUFF
+
+#define HASHC n = *str++ + 65599 * n
+
+ if (len > 0) {
+ register int loop = (len + 8 - 1) >> 3;
+
+ switch(len & (8 - 1)) {
+ case 0: do {
+ HASHC; case 7: HASHC;
+ case 6: HASHC; case 5: HASHC;
+ case 4: HASHC; case 3: HASHC;
+ case 2: HASHC; case 1: HASHC;
+ } while (--loop);
+ }
+
+ }
+#else
+ while (len--)
+ n = ((*str++) & 255) + 65587L * n;
+#endif
+ return n;
+}
diff --git a/jni/ruby/ext/sdbm/depend b/jni/ruby/ext/sdbm/depend
new file mode 100644
index 0000000..b8f5513
--- /dev/null
+++ b/jni/ruby/ext/sdbm/depend
@@ -0,0 +1,19 @@
+# AUTOGENERATED DEPENDENCIES START
+_sdbm.o: $(RUBY_EXTCONF_H)
+_sdbm.o: $(arch_hdrdir)/ruby/config.h
+_sdbm.o: $(hdrdir)/ruby/defines.h
+_sdbm.o: $(hdrdir)/ruby/missing.h
+_sdbm.o: _sdbm.c
+_sdbm.o: sdbm.h
+init.o: $(RUBY_EXTCONF_H)
+init.o: $(arch_hdrdir)/ruby/config.h
+init.o: $(hdrdir)/ruby/defines.h
+init.o: $(hdrdir)/ruby/intern.h
+init.o: $(hdrdir)/ruby/missing.h
+init.o: $(hdrdir)/ruby/ruby.h
+init.o: $(hdrdir)/ruby/st.h
+init.o: $(hdrdir)/ruby/subst.h
+init.o: $(top_srcdir)/include/ruby.h
+init.o: init.c
+init.o: sdbm.h
+# AUTOGENERATED DEPENDENCIES END
diff --git a/jni/ruby/ext/sdbm/extconf.h b/jni/ruby/ext/sdbm/extconf.h
new file mode 100644
index 0000000..6df6e45
--- /dev/null
+++ b/jni/ruby/ext/sdbm/extconf.h
@@ -0,0 +1,4 @@
+#ifndef EXTCONF_H
+#define EXTCONF_H
+#define BADMESS 0
+#endif
diff --git a/jni/ruby/ext/sdbm/extconf.rb b/jni/ruby/ext/sdbm/extconf.rb
new file mode 100644
index 0000000..67796fb
--- /dev/null
+++ b/jni/ruby/ext/sdbm/extconf.rb
@@ -0,0 +1,4 @@
+require 'mkmf'
+
+$defs << "-D""BADMESS=0"
+create_makefile("sdbm")
diff --git a/jni/ruby/ext/sdbm/init.c b/jni/ruby/ext/sdbm/init.c
new file mode 100644
index 0000000..e9ae766
--- /dev/null
+++ b/jni/ruby/ext/sdbm/init.c
@@ -0,0 +1,1065 @@
+/************************************************
+
+ sdbminit.c -
+
+ $Author: nobu $
+ created at: Fri May 7 08:34:24 JST 1999
+
+ Copyright (C) 1995-2001 Yukihiro Matsumoto
+
+************************************************/
+
+#include "ruby.h"
+
+#include "sdbm.h"
+#include <fcntl.h>
+#include <errno.h>
+
+/*
+ * Document-class: SDBM
+ *
+ * SDBM provides a simple file-based key-value store, which can only store
+ * String keys and values.
+ *
+ * Note that Ruby comes with the source code for SDBM, while the DBM and GDBM
+ * standard libraries rely on external libraries and headers.
+ *
+ * === Examples
+ *
+ * Insert values:
+ *
+ * require 'sdbm'
+ *
+ * SDBM.open 'my_database' do |db|
+ * db['apple'] = 'fruit'
+ * db['pear'] = 'fruit'
+ * db['carrot'] = 'vegetable'
+ * db['tomato'] = 'vegetable'
+ * end
+ *
+ * Bulk update:
+ *
+ * require 'sdbm'
+ *
+ * SDBM.open 'my_database' do |db|
+ * db.update('peach' => 'fruit', 'tomato' => 'fruit')
+ * end
+ *
+ * Retrieve values:
+ *
+ * require 'sdbm'
+ *
+ * SDBM.open 'my_database' do |db|
+ * db.each do |key, value|
+ * puts "Key: #{key}, Value: #{value}"
+ * end
+ * end
+ *
+ * Outputs:
+ *
+ * Key: apple, Value: fruit
+ * Key: pear, Value: fruit
+ * Key: carrot, Value: vegetable
+ * Key: peach, Value: fruit
+ * Key: tomato, Value: fruit
+ */
+
+static VALUE rb_cDBM, rb_eDBMError;
+
+struct dbmdata {
+ int di_size;
+ DBM *di_dbm;
+};
+
+static void
+closed_sdbm(void)
+{
+ rb_raise(rb_eDBMError, "closed SDBM file");
+}
+
+#define GetDBM(obj, dbmp) do {\
+ TypedData_Get_Struct((obj), struct dbmdata, &sdbm_type, (dbmp));\
+ if ((dbmp) == 0) closed_sdbm();\
+ if ((dbmp)->di_dbm == 0) closed_sdbm();\
+} while (0)
+
+#define GetDBM2(obj, dbmp, dbm) do {\
+ GetDBM((obj), (dbmp));\
+ (dbm) = (dbmp)->di_dbm;\
+} while (0)
+
+static void
+free_sdbm(void *ptr)
+{
+ struct dbmdata *dbmp = ptr;
+
+ if (dbmp->di_dbm) sdbm_close(dbmp->di_dbm);
+ ruby_xfree(dbmp);
+}
+
+static size_t
+memsize_dbm(const void *ptr)
+{
+ size_t size = 0;
+ const struct dbmdata *dbmp = ptr;
+ if (dbmp) {
+ size += sizeof(*dbmp);
+ if (dbmp->di_dbm) size += sizeof(DBM);
+ }
+ return size;
+}
+
+static const rb_data_type_t sdbm_type = {
+ "sdbm",
+ {0, free_sdbm, memsize_dbm,},
+ 0, 0,
+ RUBY_TYPED_FREE_IMMEDIATELY,
+};
+
+/*
+ * call-seq:
+ * sdbm.close -> nil
+ *
+ * Closes the database file.
+ *
+ * Raises SDBMError if the database is already closed.
+ */
+static VALUE
+fsdbm_close(VALUE obj)
+{
+ struct dbmdata *dbmp;
+
+ GetDBM(obj, dbmp);
+ sdbm_close(dbmp->di_dbm);
+ dbmp->di_dbm = 0;
+
+ return Qnil;
+}
+
+/*
+ * call-seq:
+ * sdbm.closed? -> true or false
+ *
+ * Returns +true+ if the database is closed.
+ */
+static VALUE
+fsdbm_closed(VALUE obj)
+{
+ struct dbmdata *dbmp;
+
+ TypedData_Get_Struct(obj, struct dbmdata, &sdbm_type, dbmp);
+ if (dbmp == 0)
+ return Qtrue;
+ if (dbmp->di_dbm == 0)
+ return Qtrue;
+
+ return Qfalse;
+}
+
+static VALUE
+fsdbm_alloc(VALUE klass)
+{
+ return TypedData_Wrap_Struct(klass, &sdbm_type, 0);
+}
+/*
+ * call-seq:
+ * SDBM.new(filename, mode = 0666)
+ *
+ * Creates a new database handle by opening the given +filename+. SDBM actually
+ * uses two physical files, with extensions '.dir' and '.pag'. These extensions
+ * will automatically be appended to the +filename+.
+ *
+ * If the file does not exist, a new file will be created using the given
+ * +mode+, unless +mode+ is explicitly set to nil. In the latter case, no
+ * database will be created.
+ *
+ * If the file exists, it will be opened in read/write mode. If this fails, it
+ * will be opened in read-only mode.
+ */
+static VALUE
+fsdbm_initialize(int argc, VALUE *argv, VALUE obj)
+{
+ volatile VALUE file;
+ VALUE vmode;
+ DBM *dbm;
+ struct dbmdata *dbmp;
+ int mode;
+
+ if (rb_scan_args(argc, argv, "11", &file, &vmode) == 1) {
+ mode = 0666; /* default value */
+ }
+ else if (NIL_P(vmode)) {
+ mode = -1; /* return nil if DB not exist */
+ }
+ else {
+ mode = NUM2INT(vmode);
+ }
+ FilePathValue(file);
+
+ dbm = 0;
+ if (mode >= 0)
+ dbm = sdbm_open(RSTRING_PTR(file), O_RDWR|O_CREAT, mode);
+ if (!dbm)
+ dbm = sdbm_open(RSTRING_PTR(file), O_RDWR, 0);
+ if (!dbm)
+ dbm = sdbm_open(RSTRING_PTR(file), O_RDONLY, 0);
+
+ if (!dbm) {
+ if (mode == -1) return Qnil;
+ rb_sys_fail_str(file);
+ }
+
+ dbmp = ALLOC(struct dbmdata);
+ DATA_PTR(obj) = dbmp;
+ dbmp->di_dbm = dbm;
+ dbmp->di_size = -1;
+
+ return obj;
+}
+
+/*
+ * call-seq:
+ * SDBM.open(filename, mode = 0666)
+ * SDBM.open(filename, mode = 0666) { |sdbm| ... }
+ *
+ * If called without a block, this is the same as SDBM.new.
+ *
+ * If a block is given, the new database will be passed to the block and
+ * will be safely closed after the block has executed.
+ *
+ * Example:
+ *
+ * require 'sdbm'
+ *
+ * SDBM.open('my_database') do |db|
+ * db['hello'] = 'world'
+ * end
+ */
+static VALUE
+fsdbm_s_open(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE obj = fsdbm_alloc(klass);
+
+ if (NIL_P(fsdbm_initialize(argc, argv, obj))) {
+ return Qnil;
+ }
+
+ if (rb_block_given_p()) {
+ return rb_ensure(rb_yield, obj, fsdbm_close, obj);
+ }
+
+ return obj;
+}
+
+static VALUE
+fsdbm_fetch(VALUE obj, VALUE keystr, VALUE ifnone)
+{
+ datum key, value;
+ struct dbmdata *dbmp;
+ DBM *dbm;
+
+ ExportStringValue(keystr);
+ key.dptr = RSTRING_PTR(keystr);
+ key.dsize = RSTRING_LENINT(keystr);
+
+ GetDBM2(obj, dbmp, dbm);
+ value = sdbm_fetch(dbm, key);
+ if (value.dptr == 0) {
+ if (ifnone == Qnil && rb_block_given_p())
+ return rb_yield(rb_external_str_new(key.dptr, key.dsize));
+ return ifnone;
+ }
+ return rb_external_str_new(value.dptr, value.dsize);
+}
+
+/*
+ * call-seq:
+ * sdbm[key] -> value or nil
+ *
+ * Returns the +value+ in the database associated with the given +key+ string.
+ *
+ * If no value is found, returns +nil+.
+ */
+static VALUE
+fsdbm_aref(VALUE obj, VALUE keystr)
+{
+ return fsdbm_fetch(obj, keystr, Qnil);
+}
+
+/*
+ * call-seq:
+ * sdbm.fetch(key) -> value or nil
+ * sdbm.fetch(key) { |key| ... }
+ *
+ * Returns the +value+ in the database associated with the given +key+ string.
+ *
+ * If a block is provided, the block will be called when there is no
+ * +value+ associated with the given +key+. The +key+ will be passed in as an
+ * argument to the block.
+ *
+ * If no block is provided and no value is associated with the given +key+,
+ * then an IndexError will be raised.
+ */
+static VALUE
+fsdbm_fetch_m(int argc, VALUE *argv, VALUE obj)
+{
+ VALUE keystr, valstr, ifnone;
+
+ rb_scan_args(argc, argv, "11", &keystr, &ifnone);
+ valstr = fsdbm_fetch(obj, keystr, ifnone);
+ if (argc == 1 && !rb_block_given_p() && NIL_P(valstr))
+ rb_raise(rb_eIndexError, "key not found");
+
+ return valstr;
+}
+
+/*
+ * call-seq:
+ * sdbm.key(value) -> key
+ *
+ * Returns the +key+ associated with the given +value+. If more than one
+ * +key+ corresponds to the given +value+, then the first key to be found
+ * will be returned. If no keys are found, +nil+ will be returned.
+ */
+static VALUE
+fsdbm_key(VALUE obj, VALUE valstr)
+{
+ datum key, val;
+ struct dbmdata *dbmp;
+ DBM *dbm;
+
+ ExportStringValue(valstr);
+ val.dptr = RSTRING_PTR(valstr);
+ val.dsize = RSTRING_LENINT(valstr);
+
+ GetDBM2(obj, dbmp, dbm);
+ for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
+ val = sdbm_fetch(dbm, key);
+ if (val.dsize == RSTRING_LEN(valstr) &&
+ memcmp(val.dptr, RSTRING_PTR(valstr), val.dsize) == 0)
+ return rb_external_str_new(key.dptr, key.dsize);
+ }
+ return Qnil;
+}
+
+/*
+ * :nodoc:
+ */
+static VALUE
+fsdbm_index(VALUE hash, VALUE value)
+{
+ rb_warn("SDBM#index is deprecated; use SDBM#key");
+ return fsdbm_key(hash, value);
+}
+
+/* call-seq:
+ * sdbm.select { |key, value| ... } -> Array
+ *
+ * Returns a new Array of key-value pairs for which the block returns +true+.
+ *
+ * Example:
+ *
+ * require 'sdbm'
+ *
+ * SDBM.open 'my_database' do |db|
+ * db['apple'] = 'fruit'
+ * db['pear'] = 'fruit'
+ * db['spinach'] = 'vegetable'
+ *
+ * veggies = db.select do |key, value|
+ * value == 'vegetable'
+ * end #=> [["apple", "fruit"], ["pear", "fruit"]]
+ * end
+ */
+static VALUE
+fsdbm_select(VALUE obj)
+{
+ VALUE new = rb_ary_new();
+ datum key, val;
+ DBM *dbm;
+ struct dbmdata *dbmp;
+
+ GetDBM2(obj, dbmp, dbm);
+ for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
+ VALUE assoc, v;
+ val = sdbm_fetch(dbm, key);
+ assoc = rb_assoc_new(rb_external_str_new(key.dptr, key.dsize),
+ rb_external_str_new(val.dptr, val.dsize));
+ v = rb_yield(assoc);
+ if (RTEST(v)) {
+ rb_ary_push(new, assoc);
+ }
+ GetDBM2(obj, dbmp, dbm);
+ }
+
+ return new;
+}
+
+/* call-seq:
+ * sdbm.values_at(key, ...) -> Array
+ *
+ * Returns an Array of values corresponding to the given keys.
+ */
+static VALUE
+fsdbm_values_at(int argc, VALUE *argv, VALUE obj)
+{
+ VALUE new = rb_ary_new2(argc);
+ int i;
+
+ for (i=0; i<argc; i++) {
+ rb_ary_push(new, fsdbm_fetch(obj, argv[i], Qnil));
+ }
+
+ return new;
+}
+
+static void
+fdbm_modify(VALUE obj)
+{
+ if (OBJ_FROZEN(obj)) rb_error_frozen("SDBM");
+}
+
+/*
+ * call-seq:
+ * sdbm.delete(key) -> value or nil
+ * sdbm.delete(key) { |key, value| ... }
+ *
+ * Deletes the key-value pair corresponding to the given +key+. If the
+ * +key+ exists, the deleted value will be returned, otherwise +nil+.
+ *
+ * If a block is provided, the deleted +key+ and +value+ will be passed to
+ * the block as arguments. If the +key+ does not exist in the database, the
+ * value will be +nil+.
+ */
+static VALUE
+fsdbm_delete(VALUE obj, VALUE keystr)
+{
+ datum key, value;
+ struct dbmdata *dbmp;
+ DBM *dbm;
+ VALUE valstr;
+
+ fdbm_modify(obj);
+ ExportStringValue(keystr);
+ key.dptr = RSTRING_PTR(keystr);
+ key.dsize = RSTRING_LENINT(keystr);
+
+ GetDBM2(obj, dbmp, dbm);
+ dbmp->di_size = -1;
+
+ value = sdbm_fetch(dbm, key);
+ if (value.dptr == 0) {
+ if (rb_block_given_p()) return rb_yield(keystr);
+ return Qnil;
+ }
+
+ /* need to save value before sdbm_delete() */
+ valstr = rb_external_str_new(value.dptr, value.dsize);
+
+ if (sdbm_delete(dbm, key)) {
+ dbmp->di_size = -1;
+ rb_raise(rb_eDBMError, "dbm_delete failed");
+ }
+ else if (dbmp->di_size >= 0) {
+ dbmp->di_size--;
+ }
+ return valstr;
+}
+
+/*
+ * call-seq:
+ * sdbm.shift -> Array or nil
+ *
+ * Removes a key-value pair from the database and returns them as an
+ * Array. If the database is empty, returns +nil+.
+ */
+static VALUE
+fsdbm_shift(VALUE obj)
+{
+ datum key, val;
+ struct dbmdata *dbmp;
+ DBM *dbm;
+ VALUE keystr, valstr;
+
+ fdbm_modify(obj);
+ GetDBM2(obj, dbmp, dbm);
+ key = sdbm_firstkey(dbm);
+ if (!key.dptr) return Qnil;
+ val = sdbm_fetch(dbm, key);
+ keystr = rb_external_str_new(key.dptr, key.dsize);
+ valstr = rb_external_str_new(val.dptr, val.dsize);
+ sdbm_delete(dbm, key);
+ if (dbmp->di_size >= 0) {
+ dbmp->di_size--;
+ }
+
+ return rb_assoc_new(keystr, valstr);
+}
+
+/*
+ * call-seq:
+ * sdbm.delete_if { |key, value| ... } -> self
+ * sdbm.reject! { |key, value| ... } -> self
+ *
+ * Iterates over the key-value pairs in the database, deleting those for
+ * which the block returns +true+.
+ */
+static VALUE
+fsdbm_delete_if(VALUE obj)
+{
+ datum key, val;
+ struct dbmdata *dbmp;
+ DBM *dbm;
+ VALUE keystr, valstr;
+ VALUE ret, ary = rb_ary_new();
+ int i, status = 0, n;
+
+ fdbm_modify(obj);
+ GetDBM2(obj, dbmp, dbm);
+ n = dbmp->di_size;
+ dbmp->di_size = -1;
+ for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
+ val = sdbm_fetch(dbm, key);
+ keystr = rb_external_str_new(key.dptr, key.dsize);
+ valstr = rb_external_str_new(val.dptr, val.dsize);
+ ret = rb_protect(rb_yield, rb_assoc_new(rb_str_dup(keystr), valstr), &status);
+ if (status != 0) break;
+ if (RTEST(ret)) rb_ary_push(ary, keystr);
+ GetDBM2(obj, dbmp, dbm);
+ }
+
+ for (i = 0; i < RARRAY_LEN(ary); i++) {
+ keystr = RARRAY_PTR(ary)[i];
+ ExportStringValue(keystr);
+ key.dptr = RSTRING_PTR(keystr);
+ key.dsize = RSTRING_LENINT(keystr);
+ if (sdbm_delete(dbm, key)) {
+ rb_raise(rb_eDBMError, "sdbm_delete failed");
+ }
+ }
+ if (status) rb_jump_tag(status);
+ if (n > 0) dbmp->di_size = n - RARRAY_LENINT(ary);
+
+ return obj;
+}
+
+/*
+ * call-seq:
+ * sdbm.clear -> self
+ *
+ * Deletes all data from the database.
+ */
+static VALUE
+fsdbm_clear(VALUE obj)
+{
+ datum key;
+ struct dbmdata *dbmp;
+ DBM *dbm;
+
+ fdbm_modify(obj);
+ GetDBM2(obj, dbmp, dbm);
+ dbmp->di_size = -1;
+ while (key = sdbm_firstkey(dbm), key.dptr) {
+ if (sdbm_delete(dbm, key)) {
+ rb_raise(rb_eDBMError, "sdbm_delete failed");
+ }
+ }
+ dbmp->di_size = 0;
+
+ return obj;
+}
+
+/*
+ * call-seq:
+ * sdbm.invert -> Hash
+ *
+ * Returns a Hash in which the key-value pairs have been inverted.
+ *
+ * Example:
+ *
+ * require 'sdbm'
+ *
+ * SDBM.open 'my_database' do |db|
+ * db.update('apple' => 'fruit', 'spinach' => 'vegetable')
+ *
+ * db.invert #=> {"fruit" => "apple", "vegetable" => "spinach"}
+ * end
+ */
+static VALUE
+fsdbm_invert(VALUE obj)
+{
+ datum key, val;
+ struct dbmdata *dbmp;
+ DBM *dbm;
+ VALUE keystr, valstr;
+ VALUE hash = rb_hash_new();
+
+ GetDBM2(obj, dbmp, dbm);
+ for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
+ val = sdbm_fetch(dbm, key);
+ keystr = rb_external_str_new(key.dptr, key.dsize);
+ valstr = rb_external_str_new(val.dptr, val.dsize);
+ rb_hash_aset(hash, valstr, keystr);
+ }
+ return hash;
+}
+
+/*
+ * call-seq:
+ * sdbm[key] = value -> value
+ * sdbm.store(key, value) -> value
+ *
+ * Stores a new +value+ in the database with the given +key+ as an index.
+ *
+ * If the +key+ already exists, this will update the +value+ associated with
+ * the +key+.
+ *
+ * Returns the given +value+.
+ */
+static VALUE
+fsdbm_store(VALUE obj, VALUE keystr, VALUE valstr)
+{
+ datum key, val;
+ struct dbmdata *dbmp;
+ DBM *dbm;
+
+ if (valstr == Qnil) {
+ fsdbm_delete(obj, keystr);
+ return Qnil;
+ }
+
+ fdbm_modify(obj);
+ ExportStringValue(keystr);
+ ExportStringValue(valstr);
+
+ key.dptr = RSTRING_PTR(keystr);
+ key.dsize = RSTRING_LENINT(keystr);
+
+ val.dptr = RSTRING_PTR(valstr);
+ val.dsize = RSTRING_LENINT(valstr);
+
+ GetDBM2(obj, dbmp, dbm);
+ dbmp->di_size = -1;
+ if (sdbm_store(dbm, key, val, DBM_REPLACE)) {
+#ifdef HAVE_DBM_CLAERERR
+ sdbm_clearerr(dbm);
+#endif
+ if (errno == EPERM) rb_sys_fail(0);
+ rb_raise(rb_eDBMError, "sdbm_store failed");
+ }
+
+ return valstr;
+}
+
+static VALUE
+update_i(RB_BLOCK_CALL_FUNC_ARGLIST(pair, dbm))
+{
+ Check_Type(pair, T_ARRAY);
+ if (RARRAY_LEN(pair) < 2) {
+ rb_raise(rb_eArgError, "pair must be [key, value]");
+ }
+ fsdbm_store(dbm, RARRAY_PTR(pair)[0], RARRAY_PTR(pair)[1]);
+ return Qnil;
+}
+
+/*
+ * call-seq:
+ * sdbm.update(pairs) -> self
+ *
+ * Insert or update key-value pairs.
+ *
+ * This method will work with any object which implements an each_pair
+ * method, such as a Hash.
+ */
+static VALUE
+fsdbm_update(VALUE obj, VALUE other)
+{
+ rb_block_call(other, rb_intern("each_pair"), 0, 0, update_i, obj);
+ return obj;
+}
+
+/*
+ * call-seq:
+ * sdbm.replace(pairs) -> self
+ *
+ * Empties the database, then inserts the given key-value pairs.
+ *
+ * This method will work with any object which implements an each_pair
+ * method, such as a Hash.
+ */
+static VALUE
+fsdbm_replace(VALUE obj, VALUE other)
+{
+ fsdbm_clear(obj);
+ rb_block_call(other, rb_intern("each_pair"), 0, 0, update_i, obj);
+ return obj;
+}
+
+/*
+ * call-seq:
+ * sdbm.length -> integer
+ * sdbm.size -> integer
+ *
+ * Returns the number of keys in the database.
+ */
+static VALUE
+fsdbm_length(VALUE obj)
+{
+ datum key;
+ struct dbmdata *dbmp;
+ DBM *dbm;
+ int i = 0;
+
+ GetDBM2(obj, dbmp, dbm);
+ if (dbmp->di_size > 0) return INT2FIX(dbmp->di_size);
+
+ for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
+ i++;
+ }
+ dbmp->di_size = i;
+
+ return INT2FIX(i);
+}
+
+/*
+ * call-seq:
+ * sdbm.empty? -> true or false
+ *
+ * Returns +true+ if the database is empty.
+ */
+static VALUE
+fsdbm_empty_p(VALUE obj)
+{
+ datum key;
+ struct dbmdata *dbmp;
+ DBM *dbm;
+
+ GetDBM(obj, dbmp);
+ if (dbmp->di_size < 0) {
+ dbm = dbmp->di_dbm;
+
+ for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
+ return Qfalse;
+ }
+ }
+ else {
+ if (dbmp->di_size)
+ return Qfalse;
+ }
+ return Qtrue;
+}
+
+/*
+ * call-seq:
+ * sdbm.each_value
+ * sdbm.each_value { |value| ... }
+ *
+ * Iterates over each +value+ in the database.
+ *
+ * If no block is given, returns an Enumerator.
+ */
+static VALUE
+fsdbm_each_value(VALUE obj)
+{
+ datum key, val;
+ struct dbmdata *dbmp;
+ DBM *dbm;
+
+ RETURN_ENUMERATOR(obj, 0, 0);
+
+ GetDBM2(obj, dbmp, dbm);
+ for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
+ val = sdbm_fetch(dbm, key);
+ rb_yield(rb_external_str_new(val.dptr, val.dsize));
+ GetDBM2(obj, dbmp, dbm);
+ }
+ return obj;
+}
+
+/*
+ * call-seq:
+ * sdbm.each_key
+ * sdbm.each_key { |key| ... }
+ *
+ * Iterates over each +key+ in the database.
+ *
+ * If no block is given, returns an Enumerator.
+ */
+static VALUE
+fsdbm_each_key(VALUE obj)
+{
+ datum key;
+ struct dbmdata *dbmp;
+ DBM *dbm;
+
+ RETURN_ENUMERATOR(obj, 0, 0);
+
+ GetDBM2(obj, dbmp, dbm);
+ for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
+ rb_yield(rb_external_str_new(key.dptr, key.dsize));
+ GetDBM2(obj, dbmp, dbm);
+ }
+ return obj;
+}
+
+/*
+ * call-seq:
+ * sdbm.each
+ * sdbm.each { |key, value| ... }
+ * sdbm.each_pair
+ * sdbm.each_pair { |key, value| ... }
+ *
+ * Iterates over each key-value pair in the database.
+ *
+ * If no block is given, returns an Enumerator.
+ */
+static VALUE
+fsdbm_each_pair(VALUE obj)
+{
+ datum key, val;
+ DBM *dbm;
+ struct dbmdata *dbmp;
+ VALUE keystr, valstr;
+
+ RETURN_ENUMERATOR(obj, 0, 0);
+
+ GetDBM2(obj, dbmp, dbm);
+ for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
+ val = sdbm_fetch(dbm, key);
+ keystr = rb_external_str_new(key.dptr, key.dsize);
+ valstr = rb_external_str_new(val.dptr, val.dsize);
+ rb_yield(rb_assoc_new(keystr, valstr));
+ GetDBM2(obj, dbmp, dbm);
+ }
+
+ return obj;
+}
+
+/*
+ * call-seq:
+ * sdbm.keys -> Array
+ *
+ * Returns a new Array containing the keys in the database.
+ */
+static VALUE
+fsdbm_keys(VALUE obj)
+{
+ datum key;
+ struct dbmdata *dbmp;
+ DBM *dbm;
+ VALUE ary;
+
+ GetDBM2(obj, dbmp, dbm);
+ ary = rb_ary_new();
+ for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
+ rb_ary_push(ary, rb_external_str_new(key.dptr, key.dsize));
+ }
+
+ return ary;
+}
+
+/*
+ * call-seq:
+ * sdbm.values -> Array
+ *
+ * Returns a new Array containing the values in the database.
+ */
+static VALUE
+fsdbm_values(VALUE obj)
+{
+ datum key, val;
+ struct dbmdata *dbmp;
+ DBM *dbm;
+ VALUE ary;
+
+ GetDBM2(obj, dbmp, dbm);
+ ary = rb_ary_new();
+ for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
+ val = sdbm_fetch(dbm, key);
+ rb_ary_push(ary, rb_external_str_new(val.dptr, val.dsize));
+ }
+
+ return ary;
+}
+
+/*
+ * call-seq:
+ * sdbm.include?(key) -> true or false
+ * sdbm.key?(key) -> true or false
+ * sdbm.member?(key) -> true or false
+ * sdbm.has_key?(key) -> true or false
+ *
+ * Returns +true+ if the database contains the given +key+.
+ */
+static VALUE
+fsdbm_has_key(VALUE obj, VALUE keystr)
+{
+ datum key, val;
+ struct dbmdata *dbmp;
+ DBM *dbm;
+
+ ExportStringValue(keystr);
+ key.dptr = RSTRING_PTR(keystr);
+ key.dsize = RSTRING_LENINT(keystr);
+
+ GetDBM2(obj, dbmp, dbm);
+ val = sdbm_fetch(dbm, key);
+ if (val.dptr) return Qtrue;
+ return Qfalse;
+}
+
+/*
+ * call-seq:
+ * sdbm.value?(key) -> true or false
+ * sdbm.has_value?(key) -> true or false
+ *
+ * Returns +true+ if the database contains the given +value+.
+ */
+static VALUE
+fsdbm_has_value(VALUE obj, VALUE valstr)
+{
+ datum key, val;
+ struct dbmdata *dbmp;
+ DBM *dbm;
+
+ ExportStringValue(valstr);
+ val.dptr = RSTRING_PTR(valstr);
+ val.dsize = RSTRING_LENINT(valstr);
+
+ GetDBM2(obj, dbmp, dbm);
+ for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
+ val = sdbm_fetch(dbm, key);
+ if (val.dsize == RSTRING_LENINT(valstr) &&
+ memcmp(val.dptr, RSTRING_PTR(valstr), val.dsize) == 0)
+ return Qtrue;
+ }
+ return Qfalse;
+}
+
+/*
+ * call-seq:
+ * sdbm.to_a -> Array
+ *
+ * Returns a new Array containing each key-value pair in the database.
+ *
+ * Example:
+ *
+ * require 'sdbm'
+ *
+ * SDBM.open 'my_database' do |db|
+ * db.update('apple' => 'fruit', 'spinach' => 'vegetable')
+ *
+ * db.to_a #=> [["apple", "fruit"], ["spinach", "vegetable"]]
+ * end
+ */
+static VALUE
+fsdbm_to_a(VALUE obj)
+{
+ datum key, val;
+ struct dbmdata *dbmp;
+ DBM *dbm;
+ VALUE ary;
+
+ GetDBM2(obj, dbmp, dbm);
+ ary = rb_ary_new();
+ for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
+ val = sdbm_fetch(dbm, key);
+ rb_ary_push(ary, rb_assoc_new(rb_external_str_new(key.dptr, key.dsize),
+ rb_external_str_new(val.dptr, val.dsize)));
+ }
+
+ return ary;
+}
+
+/*
+ * call-seq:
+ * sdbm.to_hash -> Hash
+ *
+ * Returns a new Hash containing each key-value pair in the database.
+ */
+static VALUE
+fsdbm_to_hash(VALUE obj)
+{
+ datum key, val;
+ struct dbmdata *dbmp;
+ DBM *dbm;
+ VALUE hash;
+
+ GetDBM2(obj, dbmp, dbm);
+ hash = rb_hash_new();
+ for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
+ val = sdbm_fetch(dbm, key);
+ rb_hash_aset(hash, rb_external_str_new(key.dptr, key.dsize),
+ rb_external_str_new(val.dptr, val.dsize));
+ }
+
+ return hash;
+}
+
+/*
+ * call-seq:
+ * sdbm.reject { |key, value| ... } -> Hash
+ *
+ * Creates a new Hash using the key-value pairs from the database, then
+ * calls Hash#reject with the given block, which returns a Hash with
+ * only the key-value pairs for which the block returns +false+.
+ */
+static VALUE
+fsdbm_reject(VALUE obj)
+{
+ return rb_hash_delete_if(fsdbm_to_hash(obj));
+}
+
+void
+Init_sdbm(void)
+{
+ rb_cDBM = rb_define_class("SDBM", rb_cObject);
+ rb_eDBMError = rb_define_class("SDBMError", rb_eStandardError);
+ /* Document-class: SDBMError
+ * Exception class used to return errors from the sdbm library.
+ */
+ rb_include_module(rb_cDBM, rb_mEnumerable);
+
+ rb_define_alloc_func(rb_cDBM, fsdbm_alloc);
+ rb_define_singleton_method(rb_cDBM, "open", fsdbm_s_open, -1);
+
+ rb_define_method(rb_cDBM, "initialize", fsdbm_initialize, -1);
+ rb_define_method(rb_cDBM, "close", fsdbm_close, 0);
+ rb_define_method(rb_cDBM, "closed?", fsdbm_closed, 0);
+ rb_define_method(rb_cDBM, "[]", fsdbm_aref, 1);
+ rb_define_method(rb_cDBM, "fetch", fsdbm_fetch_m, -1);
+ rb_define_method(rb_cDBM, "[]=", fsdbm_store, 2);
+ rb_define_method(rb_cDBM, "store", fsdbm_store, 2);
+ rb_define_method(rb_cDBM, "index", fsdbm_index, 1);
+ rb_define_method(rb_cDBM, "key", fsdbm_key, 1);
+ rb_define_method(rb_cDBM, "select", fsdbm_select, 0);
+ rb_define_method(rb_cDBM, "values_at", fsdbm_values_at, -1);
+ rb_define_method(rb_cDBM, "length", fsdbm_length, 0);
+ rb_define_method(rb_cDBM, "size", fsdbm_length, 0);
+ rb_define_method(rb_cDBM, "empty?", fsdbm_empty_p, 0);
+ rb_define_method(rb_cDBM, "each", fsdbm_each_pair, 0);
+ rb_define_method(rb_cDBM, "each_value", fsdbm_each_value, 0);
+ rb_define_method(rb_cDBM, "each_key", fsdbm_each_key, 0);
+ rb_define_method(rb_cDBM, "each_pair", fsdbm_each_pair, 0);
+ rb_define_method(rb_cDBM, "keys", fsdbm_keys, 0);
+ rb_define_method(rb_cDBM, "values", fsdbm_values, 0);
+ rb_define_method(rb_cDBM, "shift", fsdbm_shift, 0);
+ rb_define_method(rb_cDBM, "delete", fsdbm_delete, 1);
+ rb_define_method(rb_cDBM, "delete_if", fsdbm_delete_if, 0);
+ rb_define_method(rb_cDBM, "reject!", fsdbm_delete_if, 0);
+ rb_define_method(rb_cDBM, "reject", fsdbm_reject, 0);
+ rb_define_method(rb_cDBM, "clear", fsdbm_clear, 0);
+ rb_define_method(rb_cDBM,"invert", fsdbm_invert, 0);
+ rb_define_method(rb_cDBM,"update", fsdbm_update, 1);
+ rb_define_method(rb_cDBM,"replace", fsdbm_replace, 1);
+
+ rb_define_method(rb_cDBM, "has_key?", fsdbm_has_key, 1);
+ rb_define_method(rb_cDBM, "include?", fsdbm_has_key, 1);
+ rb_define_method(rb_cDBM, "key?", fsdbm_has_key, 1);
+ rb_define_method(rb_cDBM, "member?", fsdbm_has_key, 1);
+ rb_define_method(rb_cDBM, "has_value?", fsdbm_has_value, 1);
+ rb_define_method(rb_cDBM, "value?", fsdbm_has_value, 1);
+
+ rb_define_method(rb_cDBM, "to_a", fsdbm_to_a, 0);
+ rb_define_method(rb_cDBM, "to_hash", fsdbm_to_hash, 0);
+}
diff --git a/jni/ruby/ext/sdbm/sdbm.h b/jni/ruby/ext/sdbm/sdbm.h
new file mode 100644
index 0000000..c3b53c4
--- /dev/null
+++ b/jni/ruby/ext/sdbm/sdbm.h
@@ -0,0 +1,86 @@
+/*
+ * sdbm - ndbm work-alike hashed database library
+ * based on Per-Ake Larson's Dynamic Hashing algorithms. BIT 18 (1978).
+ * author: oz@nexus.yorku.ca
+ * status: public domain.
+ */
+#ifndef _SDBM_H_
+#define _SDBM_H_
+
+#include <stdio.h>
+
+#define DBLKSIZ 4096
+#define PBLKSIZ 1024
+#define PAIRMAX 1008 /* arbitrary on PBLKSIZ-N */
+#define SPLTMAX 10 /* maximum allowed splits */
+ /* for a single insertion */
+#define DIRFEXT ".dir"
+#define PAGFEXT ".pag"
+
+typedef struct {
+ int dirf; /* directory file descriptor */
+ int pagf; /* page file descriptor */
+ int flags; /* status/error flags, see below */
+ int keyptr; /* current key for nextkey */
+ off_t maxbno; /* size of dirfile in bits */
+ long curbit; /* current bit number */
+ long hmask; /* current hash mask */
+ long blkptr; /* current block for nextkey */
+ long blkno; /* current page to read/write */
+ long pagbno; /* current page in pagbuf */
+ char pagbuf[PBLKSIZ]; /* page file block buffer */
+ long dirbno; /* current block in dirbuf */
+ char dirbuf[DBLKSIZ]; /* directory file block buffer */
+} DBM;
+
+#define DBM_RDONLY 0x1 /* data base open read-only */
+#define DBM_IOERR 0x2 /* data base I/O error */
+
+/*
+ * utility macros
+ */
+#define sdbm_rdonly(db) ((db)->flags & DBM_RDONLY)
+#define sdbm_error(db) ((db)->flags & DBM_IOERR)
+
+#define sdbm_clearerr(db) ((db)->flags &= ~DBM_IOERR) /* ouch */
+
+#define sdbm_dirfno(db) ((db)->dirf)
+#define sdbm_pagfno(db) ((db)->pagf)
+
+typedef struct {
+ char *dptr;
+ int dsize;
+} datum;
+
+extern datum nullitem;
+
+#if defined(__STDC__)
+#define proto(p) p
+#else
+#define proto(p) ()
+#endif
+
+/*
+ * flags to sdbm_store
+ */
+#define DBM_INSERT 0
+#define DBM_REPLACE 1
+
+/*
+ * ndbm interface
+ */
+extern DBM *sdbm_open proto((char *, int, int));
+extern void sdbm_close proto((DBM *));
+extern datum sdbm_fetch proto((DBM *, datum));
+extern int sdbm_delete proto((DBM *, datum));
+extern int sdbm_store proto((DBM *, datum, datum, int));
+extern datum sdbm_firstkey proto((DBM *));
+extern datum sdbm_nextkey proto((DBM *));
+
+/*
+ * other
+ */
+extern DBM *sdbm_prep proto((char *, char *, int, int));
+extern long sdbm_hash proto((char *, int));
+
+#endif /* _SDBM_H_ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-05 17:30:38 +0000