From 2bb561ea5f96f8b6edd622be16be89ee6af3cd7e Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 16 Mar 2009 03:30:01 +0000
Subject: * common.mk (REVISION_H): keeps timestamp of revision.h.  
 [ruby-core:22900]

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


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@22974 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 win32/ifchange.bat | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

(limited to 'win32/ifchange.bat')

diff --git a/win32/ifchange.bat b/win32/ifchange.bat
index 9f6092747b..24e4987c55 100755
--- a/win32/ifchange.bat
+++ b/win32/ifchange.bat
@@ -1,13 +1,20 @@
 @echo off
 :: usage: ifchange target temporary
 
-if "%1" == "" goto :end
-
 set timestamp=
-if "%1" == "--timestamp" (
-    set timestamp=yes
+:optloop
+for %%I in (%1) do set opt=%%~I
+if "%opt%" == "--timestamp" (
+    set timestamp=.
+    shift
+    goto :optloop
+) else if "%opt:~0,12%" == "--timestamp=" (
+    set timestamp=%opt:~12%
     shift
+    goto :optloop
 )
+if "%opt%" == "" goto :end
+
 set dest=%1
 set src=%2
 set dest=%dest:/=\%
@@ -63,7 +70,8 @@ del %src%
 
 :nt_end
 if "%timestamp%" == "" goto :end
-    for %%I in ("%dest%") do set timestamp=%%~dpI\.time.%%~nxI
-    if not exist "%timestamp%" copy nul "%timestamp%" > nul
-    goto :end >> "%timestamp%"
+    if "%timestamp%" == "." (
+        for %%I in ("%dest%") do set timestamp=%%~dpI.time.%%~nxI
+    )
+    goto :end > "%timestamp%"
 :end
-- 
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