From fcbf63e62c627deae76c1b8cb8c0876c536ed811 Mon Sep 17 00:00:00 2001
From: Jari Vetoniemi <jari.vetoniemi@indooratlas.com>
Date: Mon, 16 Mar 2020 18:49:26 +0900
Subject: Fresh start

---
 jni/ruby/win32/mkexports.rb | 172 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 172 insertions(+)
 create mode 100755 jni/ruby/win32/mkexports.rb

(limited to 'jni/ruby/win32/mkexports.rb')

diff --git a/jni/ruby/win32/mkexports.rb b/jni/ruby/win32/mkexports.rb
new file mode 100755
index 0000000..ab29fc1
--- /dev/null
+++ b/jni/ruby/win32/mkexports.rb
@@ -0,0 +1,172 @@
+#!./miniruby -sI.
+
+$name = $library = $description = nil
+
+module RbConfig
+  autoload :CONFIG, "./rbconfig"
+end
+
+class Exports
+  @@subclass = []
+  def self.inherited(klass)
+    @@subclass << [/#{klass.name.sub(/.*::/, '').downcase}/i, klass]
+  end
+
+  def self.create(*args, &block)
+    platform = RUBY_PLATFORM
+    pat, klass = @@subclass.find {|p, k| p =~ platform}
+    unless klass
+      raise ArgumentError, "unsupported platform: #{platform}"
+    end
+    klass.new(*args, &block)
+  end
+
+  def self.extract(objs, *rest)
+    create(objs).exports(*rest)
+  end
+
+  def self.output(output = $output, &block)
+    if output
+      open(output, 'wb', &block)
+    else
+      yield STDOUT
+    end
+  end
+
+  def initialize(objs)
+    syms = {}
+    winapis = {}
+    syms["ruby_sysinit_real"] = "ruby_sysinit"
+    each_export(objs) do |internal, export|
+      syms[internal] = export
+      winapis[$1] = internal if /^_?(rb_w32_\w+)(?:@\d+)?$/ =~ internal
+    end
+    incdir = File.join(File.dirname(File.dirname(__FILE__)), "include/ruby")
+    read_substitution(incdir+"/win32.h", syms, winapis)
+    read_substitution(incdir+"/subst.h", syms, winapis)
+    syms["rb_w32_vsnprintf"] ||= "ruby_vsnprintf"
+    syms["rb_w32_snprintf"] ||= "ruby_snprintf"
+    @syms = syms
+  end
+
+  def read_substitution(header, syms, winapis)
+    IO.foreach(header) do |line|
+      if /^#define (\w+)\((.*?)\)\s+(?:\(void\))?(rb_w32_\w+)\((.*?)\)\s*$/ =~ line and
+          $2.delete(" ") == $4.delete(" ")
+        export, internal = $1, $3
+        if syms[internal] or internal = winapis[internal]
+          syms[forwarding(internal, export)] = internal
+        end
+      end
+    end
+  end
+
+  def exports(name = $name, library = $library, description = $description)
+    exports = []
+    if name
+      exports << "Name " + name
+    elsif library
+      exports << "Library " + library
+    end
+    exports << "Description " + description.dump if description
+    exports << "VERSION #{RbConfig::CONFIG['MAJOR']}.#{RbConfig::CONFIG['MINOR']}"
+    exports << "EXPORTS" << symbols()
+    exports
+  end
+
+  private
+  def forwarding(internal, export)
+    internal.sub(/^[^@]+/, "\\1#{export}")
+  end
+
+  def each_export(objs)
+  end
+
+  def objdump(objs, &block)
+    if objs.empty?
+      $stdin.each_line(&block)
+    else
+      each_line(objs, &block)
+    end
+  end
+
+  def symbols()
+    @syms.sort.collect {|k, v| v ? v == true ? "#{k} DATA" : "#{k}=#{v}" : k}
+  end
+end
+
+class Exports::Mswin < Exports
+  def each_line(objs, &block)
+    IO.popen(%w"dumpbin -symbols -exports" + objs) do |f|
+      f.each(&block)
+    end
+  end
+
+  def each_export(objs)
+    noprefix = ($arch ||= nil and /^(sh|i\d86)/ !~ $arch)
+    objs = objs.collect {|s| s.tr('/', '\\')}
+    filetype = nil
+    objdump(objs) do |l|
+      if (filetype = l[/^File Type: (.+)/, 1])..(/^\f/ =~ l)
+        case filetype
+        when /OBJECT/, /LIBRARY/
+          next if /^[[:xdigit:]]+ 0+ UNDEF / =~ l
+          next unless /External/ =~ l
+          next unless l.sub!(/.*?\s(\(\)\s+)?External\s+\|\s+/, '')
+          is_data = !$1
+          if noprefix or /^[@_]/ =~ l
+            next if /(?!^)@.*@/ =~ l || /@[[:xdigit:]]{8,32}$/ =~ l ||
+              /^_?(?:Init_|.*_threadptr_|DllMain\b)/ =~ l
+            l.sub!(/^[@_]/, '') if /@\d+$/ !~ l
+          elsif !l.sub!(/^(\S+) \([^@?\`\']*\)$/, '\1')
+            next
+          end
+        when /DLL/
+          next unless l.sub!(/^\s*\d+\s+[[:xdigit:]]+\s+[[:xdigit:]]+\s+/, '')
+        else
+          next
+        end
+        yield l.strip, is_data
+      end
+    end
+    yield "strcasecmp", "msvcrt.stricmp"
+    yield "strncasecmp", "msvcrt.strnicmp"
+  end
+end
+
+class Exports::Cygwin < Exports
+  def self.nm
+    @@nm ||= RbConfig::CONFIG["NM"]
+  end
+
+  def exports(*)
+    super()
+  end
+
+  def each_line(objs, &block)
+    IO.foreach("|#{self.class.nm} --extern --defined #{objs.join(' ')}", &block)
+  end
+
+  def each_export(objs)
+    symprefix = RbConfig::CONFIG["SYMBOL_PREFIX"]
+    symprefix.strip! if symprefix
+    re = /\s(?:(T)|[[:upper:]])\s#{symprefix}((?!Init_|.*_threadptr_|DllMain\b).*)$/
+    objdump(objs) do |l|
+      next if /@.*@/ =~ l
+      yield $2, !$1 if re =~ l
+    end
+  end
+end
+
+class Exports::Mingw < Exports::Cygwin
+  def each_export(objs)
+    super
+    yield "strcasecmp", "_stricmp"
+    yield "strncasecmp", "_strnicmp"
+  end
+end
+
+END {
+  exports = Exports.extract(ARGV)
+  Exports.output {|f| f.puts(*exports)}
+}
-- 
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