ifchange.bat: --keep option

* win32/ifchange.bat: add --keep option as well as tool/ifchange.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43309 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 10 insertions, 0 deletions

diff --git a/win32/ifchange.bat b/win32/ifchange.bat
index 24e4987c55..1444d1bc2f 100755
--- a/win32/ifchange.bat
+++ b/win32/ifchange.bat
@@ -2,6 +2,7 @@
 :: usage: ifchange target temporary

 

 set timestamp=

+set keepsuffix=

 :optloop

 for %%I in (%1) do set opt=%%~I

 if "%opt%" == "--timestamp" (

@@ -12,6 +13,14 @@ if "%opt%" == "--timestamp" (
     set timestamp=%opt:~12%

     shift

     goto :optloop

+) else if "%opt%" == "--keep" (

+    set keepsuffix=.old

+    shift

+    goto :optloop

+) else if "%opt:~0,7%" == "--keep=" (

+    set keepsuffix=%opt:~7%

+    shift

+    goto :optloop

 )

 if "%opt%" == "" goto :end

 

@@ -51,6 +60,7 @@ echo assuming %1 should be changed.
 echo %1 updated.

 :: if exist %1 del %1

 dir /b %2

+if "%keepsuffix%" != "" %1 %1%keepsuffix%

 copy %2 %1

 del %2

 goto :end