1#!@POSIX_SHELL@ 2 3# Copyright (C) 1998, 2002, 2006, 2007 Free Software Foundation 4# Copyright (C) 1993 Jean-loup Gailly 5 6# Modified for XZ Utils by Andrew Dudman and Lasse Collin. 7 8# This program is free software; you can redistribute it and/or modify 9# it under the terms of the GNU General Public License as published by 10# the Free Software Foundation; either version 2 of the License, or 11# (at your option) any later version. 12 13# This program is distributed in the hope that it will be useful, 14# but WITHOUT ANY WARRANTY; without even the implied warranty of 15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16# GNU General Public License for more details. 17 18#SET_PATH - This line is a placeholder to ease patching this script. 19 20# Instead of unsetting XZ_OPT, just make sure that xz will use file format 21# autodetection. This way memory usage limit and thread limit can be 22# specified via XZ_OPT. With gzip and bzip2 it's OK to just unset the 23# environment variables. 24xz='@xz@ --format=auto' 25unset GZIP BZIP BZIP2 26 27case ${0##*/} in 28 *cmp*) prog=xzcmp; cmp=${CMP:-cmp};; 29 *) prog=xzdiff; cmp=${DIFF:-diff};; 30esac 31 32version="$prog (@PACKAGE_NAME@) @VERSION@" 33 34usage="Usage: ${0##*/} [OPTION]... FILE1 [FILE2] 35Compare FILE1 to FILE2, using their uncompressed contents if they are 36compressed. If FILE2 is omitted, then the files compared are FILE1 and 37FILE1 from which the compression format suffix has been stripped. 38 39Do comparisons like '$cmp' does. OPTIONs are the same as for '$cmp'. 40 41Report bugs to <@PACKAGE_BUGREPORT@>." 42 43# sed script to escape all ' for the shell, and then (to handle trailing 44# newlines correctly) turn trailing X on last line into '. 45escape=' 46 s/'\''/'\''\\'\'''\''/g 47 $s/X$/'\''/ 48' 49 50while :; do 51 case $1 in 52 --h*) printf '%s\n' "$usage" || exit 2; exit;; 53 --v*) echo "$version" || exit 2; exit;; 54 --) shift; break;; 55 -*\'*) cmp="$cmp '"`printf '%sX\n' "$1" | sed "$escape"`;; 56 -?*) cmp="$cmp '$1'";; 57 *) break;; 58 esac 59 shift 60done 61cmp="$cmp --" 62 63for file; do 64 test "X$file" = X- || <"$file" || exit 2 65done 66 67xz1=$xz 68xz2=$xz 69xz_status=0 70exec 3>&1 71 72if test $# -eq 1; then 73 case $1 in 74 *[-.]xz | *[-.]lzma | *.t[lx]z) 75 ;; 76 *[-.]bz2 | *.tbz | *.tbz2) 77 xz1=bzip2;; 78 *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) 79 xz1=gzip;; 80 *) 81 echo >&2 "$0: $1: Unknown compressed file name suffix" 82 exit 2;; 83 esac 84 case $1 in 85 *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma) 86 FILE=`expr "X$1" : 'X\(.*\)[-.][abglmxzZ2]*$'`;; 87 *.t[abglx]z) 88 FILE=`expr "X$1" : 'X\(.*[-.]t\)[abglx]z$'`ar;; 89 *.tbz2) 90 FILE=`expr "X$1" : 'X\(.*[-.]t\)bz2$'`ar;; 91 esac 92 xz_status=$( 93 exec 4>&1 94 ($xz1 -cd -- "$1" 4>&-; echo $? >&4) 3>&- | eval "$cmp" - '"$FILE"' >&3 95 ) 96elif test $# -eq 2; then 97 case $1 in 98 *[-.]bz2 | *.tbz | *.tbz2) xz1=bzip2;; 99 *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) xz1=gzip;; 100 esac 101 case $2 in 102 *[-.]bz2 | *.tbz | *.tbz2) xz2=bzip2;; 103 *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) xz2=gzip;; 104 esac 105 case $1 in 106 *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *.t[abglx]z | *.tbz2 | -) 107 case "$2" in 108 *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *.t[abglx]z | *.tbz2 | -) 109 if test "$1$2" = --; then 110 xz_status=$( 111 exec 4>&1 112 ($xz1 -cdfq - 4>&-; echo $? >&4) 3>&- | 113 eval "$cmp" - - >&3 114 ) 115 elif # Reject Solaris 8's buggy /bin/bash 2.03. 116 echo X | (echo X | eval "$cmp" /dev/fd/5 - >/dev/null 2>&1) 5<&0; then 117 xz_status=$( 118 exec 4>&1 119 ($xz1 -cdfq -- "$1" 4>&-; echo $? >&4) 3>&- | 120 ( ($xz2 -cdfq -- "$2" 4>&-; echo $? >&4) 3>&- 5<&- </dev/null | 121 eval "$cmp" /dev/fd/5 - >&3) 5<&0 122 ) 123 case $xz_status in 124 *[1-9]*) xz_status=1;; 125 *) xz_status=0;; 126 esac 127 else 128 F=`expr "/$2" : '.*/\(.*\)[-.][ablmtxz2]*$'` || F=$prog 129 tmp= 130 trap ' 131 test -n "$tmp" && rm -f "$tmp" 132 (exit 2); exit 2 133 ' HUP INT PIPE TERM 0 134 tmp=`mktemp -t -- "$F.XXXXXX"` || exit 2 135 $xz2 -cdfq -- "$2" > "$tmp" || exit 2 136 xz_status=$( 137 exec 4>&1 138 ($xz1 -cdfq -- "$1" 4>&-; echo $? >&4) 3>&- | 139 eval "$cmp" - '"$tmp"' >&3 140 ) 141 cmp_status=$? 142 rm -f "$tmp" || xz_status=$? 143 trap - HUP INT PIPE TERM 0 144 (exit $cmp_status) 145 fi;; 146 *) 147 xz_status=$( 148 exec 4>&1 149 ($xz1 -cdfq -- "$1" 4>&-; echo $? >&4) 3>&- | 150 eval "$cmp" - '"$2"' >&3 151 );; 152 esac;; 153 *) 154 case "$2" in 155 *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *.t[abglx]z | *.tbz2 | -) 156 xz_status=$( 157 exec 4>&1 158 ($xz2 -cdfq -- "$2" 4>&-; echo $? >&4) 3>&- | 159 eval "$cmp" '"$1"' - >&3 160 );; 161 *) 162 eval "$cmp" '"$1"' '"$2"';; 163 esac;; 164 esac 165else 166 echo >&2 "$0: Invalid number of operands; try \`${0##*/} --help' for help" 167 exit 2 168fi 169 170cmp_status=$? 171test "$xz_status" -eq 0 || exit 2 172exit $cmp_status 173