diff options
| -rw-r--r-- | ChangeLog | 8 | ||||
| -rwxr-xr-x | move-if-change | 44 |
2 files changed, 25 insertions, 27 deletions
@@ -1,3 +1,11 @@ +2005-09-07 Ben Elliston <bje@au.ibm.com> + + Import from Autoconf sources: + + 2005-09-06 Paul Eggert <eggert@cs.ucla.edu> + * move-if-change: Don't output "$2 is unchanged"; suggested by Ben + Elliston. Handle weird characters correctly. + 2005-08-30 Phil Edwards <phil@codesourcery.com> * configure.in (*-*-vxworks*): Add target-libstdc++-v3 to noconfigdirs. diff --git a/move-if-change b/move-if-change index d267e72..ff74a55 100755 --- a/move-if-change +++ b/move-if-change @@ -1,32 +1,22 @@ #!/bin/sh +# Like mv $1 $2, but if the files are the same, just delete $1. +# Status is zero if successful, nonzero otherwise. -# Copyright (C) 1996 Free Software Foundation, Inc. -# -# This program is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2 of the License, or -# (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software -# Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. +usage="$0: usage: $0 SOURCE DEST" -if -test -r $2 -then -if -cmp $1 $2 > /dev/null -then -echo $2 is unchanged -rm -f $1 -else -mv -f $1 $2 -fi +case $# in +2) ;; +*) echo "$usage" >&2; exit 1;; +esac + +for arg in "$1" "$2"; do + case $arg in + -*) echo "$usage" >&2; exit 1;; + esac +done + +if test -r "$2" && cmp -s "$1" "$2"; then + rm -f "$1" else -mv -f $1 $2 + mv -f "$1" "$2" fi |