From dbc024d16c94320ad151e06e89a532888d7f0bb9 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 17 Oct 2008 10:46:23 +0000
Subject: * common.mk (ID_H_TARGET): phony target to update id.h.

* tool/ifchange, win32/ifchange.bat: --timestamp option added.

* tool/generic_erb.rb: --timestamp, --output and --if-change options
  added.

* template/id.h.tmpl: moved from id.h.


git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@19822 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 tool/generic_erb.rb | 32 +++++++++++++++++++++++++++++++-
 tool/ifchange       |  8 ++++++++
 2 files changed, 39 insertions(+), 1 deletion(-)

(limited to 'tool')

diff --git a/tool/generic_erb.rb b/tool/generic_erb.rb
index 7ea33fbc5..c234f3a52 100644
--- a/tool/generic_erb.rb
+++ b/tool/generic_erb.rb
@@ -1,4 +1,34 @@
 require 'erb'
+require 'optparse'
+require 'fileutils'
 
+timestamp = nil
+output = nil
+ifchange = nil
+opt = OptionParser.new do |o|
+  o.on('-t', '--timestamp[=PATH]') {|v| timestamp = v || true}
+  o.on('-o', '--output=PATH') {|v| output = v}
+  o.on('-c', '--[no-]if-change') {|v| ifchange = v}
+  o.order!(ARGV)
+end or abort opt.opt_s
 template = ARGV.shift
-ERB.new(File.read(template), nil, '%').run
+erb = ERB.new(File.read(template), nil, '%')
+erb.filename = template
+result = erb.result
+if output
+  if ifchange
+    if (IO.read(output) rescue nil) == result
+      puts "#{output} unchanged"
+    else
+      open(output, "wb") {|f| f.print result}
+      puts "#{output} updated"
+    end
+  end
+  if timestamp
+    if timestamp == true
+      dir, base = File.split(output)
+      timestamp = File.join(dir, ".time." + base)
+    end
+    FileUtils.touch(timestamp)
+  end
+end
diff --git a/tool/ifchange b/tool/ifchange
index 544513ad1..8bfca2670 100755
--- a/tool/ifchange
+++ b/tool/ifchange
@@ -1,6 +1,11 @@
 #!/bin/sh
 # usage: ifchange target temporary
 
+unset timestamp
+if [ "$1" = --timestamp ]; then
+    timestamp=yes
+    shift
+fi
 target="$1"
 temp="$2"
 if [ "$temp" = - ]; then
@@ -15,3 +20,6 @@ else
     echo "$target updated"
     mv -f "$temp" "$target"
 fi
+if [ $timestamp ]; then
+    touch `dirname "$target"`/.time.`basename "$target"`
+fi
-- 
cgit