* tool/transcode-tblgen.rb: record checksum of

  transcode-tblgen.rb itself.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@18473 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 11 insertions, 2 deletions

diff --git a/ChangeLog b/ChangeLog
index 3020d7a799..172b4d8e86 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sun Aug 10 18:09:16 2008  Tanaka Akira  <[email protected]>
+
+	* tool/transcode-tblgen.rb: record checksum of
+	  transcode-tblgen.rb itself.
+
 Sun Aug 10 12:34:41 2008  Nobuyoshi Nakada  <[email protected]>
 
 	* config.guess ({powerpc-apple,i586-pc}-haiku): re-applied r18403.
diff --git a/tool/transcode-tblgen.rb b/tool/transcode-tblgen.rb
index 4e7cbc516f..3459bd8bf1 100644
--- a/tool/transcode-tblgen.rb
+++ b/tool/transcode-tblgen.rb
@@ -565,7 +565,11 @@ dir = File.dirname(arg)
 $:.unshift dir unless $:.include? dir
 src = File.read(arg)
 src.force_encoding("ascii-8bit") if src.respond_to? :force_encoding
+this_script = File.read(__FILE__)
+this_script.force_encoding("ascii-8bit") if this_script.respond_to? :force_encoding
+
 base_signature = "/* autogenerated. */\n"
+base_signature << "/* #{make_signature(File.basename(__FILE__), this_script)} */\n"
 base_signature << "/* #{make_signature(File.basename(arg), src)} */\n"
 
 if !force_mode && output_filename && File.readable?(output_filename)
@@ -574,14 +578,14 @@ if !force_mode && output_filename && File.readable?(output_filename)
   old_signature.each_line {|line|
     if %r{/\* src="([0-9a-z_.-]+)",} =~ line
       name = $1
-      next if name == File.basename(arg)
+      next if name == File.basename(arg) || name == File.basename(__FILE__)
       path = File.join(dir, name)
       if File.readable? path
         chk_signature << "/* #{make_signature(name, File.read(path))} */\n"
       end
     end
   }
-  if old_signature == chk_signature && File.mtime(__FILE__) < File.mtime(output_filename)
+  if old_signature == chk_signature
     now = Time.now
     File.utime(now, now, output_filename)
     STDERR.puts "already up-to-date: #{output_filename}" if VERBOSE_MODE