186d7f5d3SJohn Marino#!/bin/sh - 286d7f5d3SJohn Marino# 386d7f5d3SJohn Marino# $NetBSD: zdiff,v 1.2 2003/12/28 12:43:43 wiz Exp $ 486d7f5d3SJohn Marino# $DragonFly: src/usr.bin/gzip/zdiff,v 1.1 2004/10/26 11:19:31 joerg Exp $ 586d7f5d3SJohn Marino# $OpenBSD: zdiff,v 1.2 2003/07/29 07:42:44 otto Exp $ 686d7f5d3SJohn Marino# 786d7f5d3SJohn Marino# Copyright (c) 2003 Todd C. Miller <Todd.Miller@courtesan.com> 886d7f5d3SJohn Marino# 986d7f5d3SJohn Marino# Permission to use, copy, modify, and distribute this software for any 1086d7f5d3SJohn Marino# purpose with or without fee is hereby granted, provided that the above 1186d7f5d3SJohn Marino# copyright notice and this permission notice appear in all copies. 1286d7f5d3SJohn Marino# 1386d7f5d3SJohn Marino# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 1486d7f5d3SJohn Marino# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 1586d7f5d3SJohn Marino# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 1686d7f5d3SJohn Marino# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 1786d7f5d3SJohn Marino# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 1886d7f5d3SJohn Marino# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 1986d7f5d3SJohn Marino# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 2086d7f5d3SJohn Marino# 2186d7f5d3SJohn Marino# Sponsored in part by the Defense Advanced Research Projects 2286d7f5d3SJohn Marino# Agency (DARPA) and Air Force Research Laboratory, Air Force 2386d7f5d3SJohn Marino# Materiel Command, USAF, under agreement number F39502-99-1-0512. 2486d7f5d3SJohn Marino# 2586d7f5d3SJohn Marino 2686d7f5d3SJohn Marino# Set $prog based on $0 2786d7f5d3SJohn Marinocase $0 in 2886d7f5d3SJohn Marino *cmp) prog=cmp 2986d7f5d3SJohn Marino ;; 3086d7f5d3SJohn Marino *) prog=diff 3186d7f5d3SJohn Marino ;; 3286d7f5d3SJohn Marinoesac 3386d7f5d3SJohn MarinoUSAGE="usage: z$prog [options] file1 [file2]" 3486d7f5d3SJohn Marino 3586d7f5d3SJohn Marino# Pull out any command line flags so we can pass them to diff/cmp 3686d7f5d3SJohn Marino# XXX - assumes there is no optarg 3786d7f5d3SJohn Marinoflags= 3886d7f5d3SJohn Marinowhile test $# -ne 0; do 3986d7f5d3SJohn Marino case "$1" in 4086d7f5d3SJohn Marino --) 4186d7f5d3SJohn Marino shift 4286d7f5d3SJohn Marino break 4386d7f5d3SJohn Marino ;; 4486d7f5d3SJohn Marino -*) 4586d7f5d3SJohn Marino flags="$flags $1" 4686d7f5d3SJohn Marino shift 4786d7f5d3SJohn Marino ;; 4886d7f5d3SJohn Marino *) 4986d7f5d3SJohn Marino break 5086d7f5d3SJohn Marino ;; 5186d7f5d3SJohn Marino esac 5286d7f5d3SJohn Marinodone 5386d7f5d3SJohn Marino 5486d7f5d3SJohn Marinoif [ $# -eq 1 ]; then 5586d7f5d3SJohn Marino # One file given, compare compressed to uncompressed 5686d7f5d3SJohn Marino files="$1" 5786d7f5d3SJohn Marino case "$1" in 5886d7f5d3SJohn Marino *[._-][Zz]) 5986d7f5d3SJohn Marino files="${1%??}" 6086d7f5d3SJohn Marino ;; 6186d7f5d3SJohn Marino *[._-]gz) 6286d7f5d3SJohn Marino files="${1%???}" 6386d7f5d3SJohn Marino ;; 6486d7f5d3SJohn Marino *.t[ag]z) 6586d7f5d3SJohn Marino files="${1%??}"ar 6686d7f5d3SJohn Marino ;; 6786d7f5d3SJohn Marino *) echo "z$prog: unknown suffix" 1>&2 6886d7f5d3SJohn Marino exit 1 6986d7f5d3SJohn Marino esac 7086d7f5d3SJohn Marino gzip -cdfq "$1" | $prog $flags - "$files" 7186d7f5d3SJohn Marino status=$? 7286d7f5d3SJohn Marinoelif [ $# -eq 2 ]; then 7386d7f5d3SJohn Marino # Two files given, compare the two uncompressing as needed 7486d7f5d3SJohn Marino case "$1" in 7586d7f5d3SJohn Marino *[._-][Zz]|*[._-]gz|*.t[ag]z) 7686d7f5d3SJohn Marino files=- 7786d7f5d3SJohn Marino filt="gzip -cdfq $1" 7886d7f5d3SJohn Marino ;; 7986d7f5d3SJohn Marino *) 8086d7f5d3SJohn Marino files="$1" 8186d7f5d3SJohn Marino ;; 8286d7f5d3SJohn Marino esac 8386d7f5d3SJohn Marino case "$2" in 8486d7f5d3SJohn Marino *[._-][Zz]|*[._-]gz|*.t[ag]z) 8586d7f5d3SJohn Marino if [ "$files" = "-" ]; then 8686d7f5d3SJohn Marino tmp=`mktemp -t z$prog.XXXXXXXXXX` || exit 1 8786d7f5d3SJohn Marino trap "rm -f $tmp" 0 1 2 3 13 15 8886d7f5d3SJohn Marino gzip -cdfq "$2" > $tmp 8986d7f5d3SJohn Marino files="$files $tmp" 9086d7f5d3SJohn Marino else 9186d7f5d3SJohn Marino files="$files -" 9286d7f5d3SJohn Marino filt="gzip -cdfq $2" 9386d7f5d3SJohn Marino fi 9486d7f5d3SJohn Marino ;; 9586d7f5d3SJohn Marino *) 9686d7f5d3SJohn Marino files="$files $2" 9786d7f5d3SJohn Marino ;; 9886d7f5d3SJohn Marino esac 9986d7f5d3SJohn Marino if [ -n "$filt" ]; then 10086d7f5d3SJohn Marino $filt | $prog $flags $files 10186d7f5d3SJohn Marino else 10286d7f5d3SJohn Marino $prog $flags $files 10386d7f5d3SJohn Marino fi 10486d7f5d3SJohn Marino status=$? 10586d7f5d3SJohn Marinoelse 10686d7f5d3SJohn Marino echo "$USAGE" 1>&2 10786d7f5d3SJohn Marino exit 1 10886d7f5d3SJohn Marinofi 10986d7f5d3SJohn Marino 11086d7f5d3SJohn Marinoexit $status 111