nobu	2008-01-25 19:22:32 +0900 (Fri, 25 Jan 2008)

  New Revision: 15235

  Added files:
    trunk/tool/ifchange

  Log:
    * tool/ifchange: commit miss.

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/tool/ifchange?revision=15235&view=markup
  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/tool/ifchange?r1=15235&r2=15234&diff_format=u

Index: tool/ifchange
===================================================================
--- tool/ifchange	(revision 0)
+++ tool/ifchange	(revision 15235)
@@ -0,0 +1,16 @@
+#!/bin/sh
+# usage: ifchange target temporary
+
+target="$1"
+temp="$2"
+if [ "$temp" = - ]; then
+    temp="tmpdata$$.tmp~"
+    cat > "$temp" || exit $?
+    trap 'rm -f "$temp"' 0
+fi
+if cmp "$target" "$temp" >/dev/null 2>&1; then
+    echo "$target unchanged"
+else
+    echo "$target updated"
+    mv -f "$temp" "$target"
+fi

Property changes on: tool/ifchange
___________________________________________________________________
Name: svn:eol-style
   + LF
Name: svn:executable
   + *


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