added tag v1_9_0_4

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_9_0_4@18845 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 96 insertions, 0 deletions

diff --git a/trunk/tool/compile_prelude.rb b/trunk/tool/compile_prelude.rb
new file mode 100644
index 0000000000..70197aebf3
--- /dev/null
+++ b/trunk/tool/compile_prelude.rb
@@ -0,0 +1,96 @@
+# This file is interpreted by $(BASERUBY) and miniruby.
+# $(BASERUBY) is used for miniprelude.c.
+# miniruby is used for prelude.c.
+# Since $(BASERUBY) may be older than Ruby 1.9,
+# Ruby 1.9 feature should not be used.
+
+$:.unshift(File.expand_path("../..", __FILE__))
+
+preludes = ARGV.dup
+outfile = preludes.pop
+init_name = outfile[/\w+(?=_prelude.c\b)/] || 'prelude'
+
+C_ESC = {
+  "\\" => "\\\\",
+  '"' => '\"',
+  "\n" => '\n',
+}
+
+0x00.upto(0x1f) {|ch| C_ESC[[ch].pack("C")] ||= "\\%03o" % ch }
+0x7f.upto(0xff) {|ch| C_ESC[[ch].pack("C")] = "\\%03o" % ch }
+C_ESC_PAT = Regexp.union(*C_ESC.keys)
+
+def c_esc(str)
+  '"' + str.gsub(C_ESC_PAT) { C_ESC[$&] } + '"'
+end
+
+mkconf = nil
+setup_ruby_prefix = nil
+teardown_ruby_prefix = nil
+lines_list = preludes.map {|filename|
+  lines = []
+  need_ruby_prefix = false
+  File.readlines(filename).each {|line|
+    line.gsub!(/RbConfig::CONFIG\["(\w+)"\]/) {
+      key = $1
+      unless mkconf
+        require 'rbconfig'
+        mkconf = RbConfig::MAKEFILE_CONFIG.merge('prefix'=>'#{TMP_RUBY_PREFIX}')
+        setup_ruby_prefix = "TMP_RUBY_PREFIX = $:.reverse.find{|e|e!=\".\"}.sub(%r{(.*)/lib/.*}m, \"\\\\1\")\n"
+        teardown_ruby_prefix = 'Object.class_eval { remove_const "TMP_RUBY_PREFIX" }'
+      end
+      if RbConfig::MAKEFILE_CONFIG.has_key? key
+        val = RbConfig.expand("$(#{key})", mkconf)
+        need_ruby_prefix = true if /\A\#\{TMP_RUBY_PREFIX\}/ =~ val
+        c_esc(val)
+      else
+        "nil"
+      end
+    }
+    lines << c_esc(line)
+  }
+  setup_lines = []
+  if need_ruby_prefix
+    setup_lines << c_esc(setup_ruby_prefix)
+    lines << c_esc(teardown_ruby_prefix)
+  end
+  [setup_lines, lines]
+}
+
+require 'erb'
+
+tmp = ERB.new(<<'EOS', nil, '%').result(binding)
+#include "ruby/ruby.h"
+#include "vm_core.h"
+
+% preludes.zip(lines_list).each_with_index {|(prelude, (setup_lines, lines)), i|
+static const char prelude_name<%=i%>[] = <%=c_esc(File.basename(prelude))%>;
+static const char prelude_code<%=i%>[] =
+%   (setup_lines+lines).each {|line|
+<%=line%>
+%   }
+;
+% }
+
+void
+Init_<%=init_name%>(void)
+{
+% lines_list.each_with_index {|(setup_lines, lines), i|
+  rb_iseq_eval(rb_iseq_compile(
+    rb_str_new(prelude_code<%=i%>, sizeof(prelude_code<%=i%>) - 1),
+    rb_str_new(prelude_name<%=i%>, sizeof(prelude_name<%=i%>) - 1),
+    INT2FIX(<%=1-setup_lines.length%>)));
+
+% }
+#if 0
+% preludes.length.times {|i|
+    puts(prelude_code<%=i%>);
+% }
+#endif
+}
+EOS
+
+open(outfile, 'w'){|f|
+  f << tmp
+}
+