112 lines
2.4 KiB
Plaintext
112 lines
2.4 KiB
Plaintext
|
#!/bin/sh -
|
||
|
|
#
|
||
|
|
# $NetBSD: zdiff,v 1.3 2004/03/29 10:01:00 wiz Exp $
|
||
|
|
# $OpenBSD: zdiff,v 1.2 2003/07/29 07:42:44 otto Exp $
|
||
|
|
#
|
||
|
|
#-
|
||
|
|
# Copyright (c) 2003 Todd C. Miller <Todd.Miller@courtesan.com>
|
||
|
|
#
|
||
|
|
# Permission to use, copy, modify, and distribute this software for any
|
||
|
|
# purpose with or without fee is hereby granted, provided that the above
|
||
|
|
# copyright notice and this permission notice appear in all copies.
|
||
|
|
#
|
||
|
|
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
||
|
|
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
||
|
|
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
||
|
|
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||
|
|
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
||
|
|
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
||
|
|
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||
|
|
#
|
||
|
|
# Sponsored in part by the Defense Advanced Research Projects
|
||
|
|
# Agency (DARPA) and Air Force Research Laboratory, Air Force
|
||
|
|
# Materiel Command, USAF, under agreement number F39502-99-1-0512.
|
||
|
|
#
|
||
|
|
# $FreeBSD$
|
||
|
|
|
||
|
|
# Set $prog based on $0
|
||
|
|
case $0 in
|
||
|
|
*cmp) prog=cmp
|
||
|
|
;;
|
||
|
|
*) prog=diff
|
||
|
|
;;
|
||
|
|
esac
|
||
|
|
USAGE="usage: z$prog [options] file1 [file2]"
|
||
|
|
|
||
|
|
# Pull out any command line flags so we can pass them to diff/cmp
|
||
|
|
# XXX - assumes there is no optarg
|
||
|
|
flags=
|
||
|
|
while test $# -ne 0; do
|
||
|
|
case "$1" in
|
||
|
|
--)
|
||
|
|
shift
|
||
|
|
break
|
||
|
|
;;
|
||
|
|
-*)
|
||
|
|
flags="$flags $1"
|
||
|
|
shift
|
||
|
|
;;
|
||
|
|
*)
|
||
|
|
break
|
||
|
|
;;
|
||
|
|
esac
|
||
|
|
done
|
||
|
|
|
||
|
|
if [ $# -eq 1 ]; then
|
||
|
|
# One file given, compare compressed to uncompressed
|
||
|
|
files="$1"
|
||
|
|
case "$1" in
|
||
|
|
*[._-][Zz])
|
||
|
|
files="${1%??}"
|
||
|
|
;;
|
||
|
|
*[._-]gz)
|
||
|
|
files="${1%???}"
|
||
|
|
;;
|
||
|
|
*.t[ag]z)
|
||
|
|
files="${1%??}"ar
|
||
|
|
;;
|
||
|
|
*) echo "z$prog: unknown suffix" 1>&2
|
||
|
|
exit 1
|
||
|
|
esac
|
||
|
|
gzip -cdfq "$1" | $prog $flags - "$files"
|
||
|
|
status=$?
|
||
|
|
elif [ $# -eq 2 ]; then
|
||
|
|
# Two files given, compare the two uncompressing as needed
|
||
|
|
case "$1" in
|
||
|
|
*[._-][Zz]|*[._-]gz|*.t[ag]z)
|
||
|
|
files=-
|
||
|
|
filt="gzip -cdfq $1"
|
||
|
|
;;
|
||
|
|
*)
|
||
|
|
files="$1"
|
||
|
|
;;
|
||
|
|
esac
|
||
|
|
case "$2" in
|
||
|
|
*[._-][Zz]|*[._-]gz|*.t[ag]z)
|
||
|
|
if [ "$files" = "-" ]; then
|
||
|
|
tmp=`mktemp -t z$prog.XXXXXXXXXX` || exit 1
|
||
|
|
trap "rm -f $tmp" 0 1 2 3 13 15
|
||
|
|
gzip -cdfq "$2" > $tmp
|
||
|
|
files="$files $tmp"
|
||
|
|
else
|
||
|
|
files="$files -"
|
||
|
|
filt="gzip -cdfq $2"
|
||
|
|
fi
|
||
|
|
;;
|
||
|
|
*)
|
||
|
|
files="$files $2"
|
||
|
|
;;
|
||
|
|
esac
|
||
|
|
if [ -n "$filt" ]; then
|
||
|
|
$filt | $prog $flags $files
|
||
|
|
else
|
||
|
|
$prog $flags $files
|
||
|
|
fi
|
||
|
|
status=$?
|
||
|
|
else
|
||
|
|
echo "$USAGE" 1>&2
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
|
||
|
|
exit $status
|