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#!/bin/sh |
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|
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# Copyright (C) 1998, 2002, 2006, 2007 Free Software Foundation |
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# Copyright (C) 1993 Jean-loup Gailly |
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|
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# Modified for XZ Utils by Andrew Dudman and Lasse Collin. |
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|
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# This program is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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|
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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|
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#SET_PATH - This line is a placeholder to ease patching this script. |
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|
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# Instead of unsetting XZ_OPT, just make sure that xz will use file format |
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# autodetection. This way memory usage limit and thread limit can be |
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# specified via XZ_OPT. With gzip and bzip2 it's OK to just unset the |
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# environment variables. |
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xz='xz --format=auto' |
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unset GZIP BZIP BZIP2 |
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|
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case ${0##*/} in |
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*cmp*) prog=xzcmp; cmp=${CMP:-cmp};; |
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*) prog=xzdiff; cmp=${DIFF:-diff};; |
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esac |
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|
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version="$prog (XZ Utils) 5.0.3" |
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|
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usage="Usage: ${0##*/} [OPTION]... FILE1 [FILE2] |
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Compare FILE1 to FILE2, using their uncompressed contents if they are |
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compressed. If FILE2 is omitted, then the files compared are FILE1 and |
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FILE1 from which the compression format suffix has been stripped. |
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|
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Do comparisons like '$cmp' does. OPTIONs are the same as for '$cmp'. |
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|
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Report bugs to <lasse.collin@tukaani.org>." |
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|
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# sed script to escape all ' for the shell, and then (to handle trailing |
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# newlines correctly) turn trailing X on last line into '. |
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escape=' |
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s/'\''/'\''\\'\'''\''/g |
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$s/X$/'\''/ |
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' |
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|
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while :; do |
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case $1 in |
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--h*) printf '%s\n' "$usage" || exit 2; exit;; |
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--v*) echo "$version" || exit 2; exit;; |
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--) shift; break;; |
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-*\'*) cmp="$cmp '"`printf '%sX\n' "$1" | sed "$escape"`;; |
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-?*) cmp="$cmp '$1'";; |
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*) break;; |
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esac |
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shift |
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done |
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cmp="$cmp --" |
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|
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for file; do |
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test "X$file" = X- || <"$file" || exit 2 |
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done |
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|
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xz1=$xz |
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xz2=$xz |
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xz_status=0 |
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exec 3>&1 |
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|
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if test $# -eq 1; then |
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case $1 in |
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*[-.]xz | *[-.]lzma | *.t[lx]z) |
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;; |
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*[-.]bz2 | *.tbz | *.tbz2) |
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xz1=bzip2;; |
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*[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) |
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xz1=gzip;; |
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*) |
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echo >&2 "$0: $1: Unknown compressed file name suffix" |
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exit 2;; |
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esac |
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case $1 in |
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*[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma) |
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FILE=`expr "X$1" : 'X\(.*\)[-.][abglmxzZ2]*$'`;; |
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*.t[abglx]z) |
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FILE=`expr "X$1" : 'X\(.*[-.]t\)[abglx]z$'`ar;; |
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*.tbz2) |
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FILE=`expr "X$1" : 'X\(.*[-.]t\)bz2$'`ar;; |
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esac |
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xz_status=$( |
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exec 4>&1 |
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($xz1 -cd -- "$1" 4>&-; echo $? >&4) 3>&- | eval "$cmp" - '"$FILE"' >&3 |
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) |
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elif test $# -eq 2; then |
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case $1 in |
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*[-.]bz2 | *.tbz | *.tbz2) xz1=bzip2;; |
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*[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) xz1=gzip;; |
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esac |
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case $2 in |
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*[-.]bz2 | *.tbz | *.tbz2) xz2=bzip2;; |
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*[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) xz2=gzip;; |
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esac |
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case $1 in |
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*[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *.t[abglx]z | *.tbz2 | -) |
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case "$2" in |
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*[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *.t[abglx]z | *.tbz2 | -) |
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if test "$1$2" = --; then |
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xz_status=$( |
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exec 4>&1 |
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($xz1 -cdfq - 4>&-; echo $? >&4) 3>&- | |
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eval "$cmp" - - >&3 |
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) |
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elif # Reject Solaris 8's buggy /bin/bash 2.03. |
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echo X | (echo X | eval "$cmp" /dev/fd/5 - >/dev/null 2>&1) 5<&0; then |
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xz_status=$( |
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exec 4>&1 |
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($xz1 -cdfq -- "$1" 4>&-; echo $? >&4) 3>&- | |
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( ($xz2 -cdfq -- "$2" 4>&-; echo $? >&4) 3>&- 5<&- </dev/null | |
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eval "$cmp" /dev/fd/5 - >&3) 5<&0 |
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) |
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case $xz_status in |
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*[1-9]*) xz_status=1;; |
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*) xz_status=0;; |
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esac |
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else |
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F=`expr "/$2" : '.*/\(.*\)[-.][ablmtxz2]*$'` || F=$prog |
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tmp= |
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trap ' |
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test -n "$tmp" && rm -f "$tmp" |
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(exit 2); exit 2 |
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' HUP INT PIPE TERM 0 |
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tmp=`mktemp -t -- "$F.XXXXXX"` || exit 2 |
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$xz2 -cdfq -- "$2" > "$tmp" || exit 2 |
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xz_status=$( |
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exec 4>&1 |
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($xz1 -cdfq -- "$1" 4>&-; echo $? >&4) 3>&- | |
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eval "$cmp" - '"$tmp"' >&3 |
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) |
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cmp_status=$? |
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rm -f "$tmp" || xz_status=$? |
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trap - HUP INT PIPE TERM 0 |
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(exit $cmp_status) |
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fi;; |
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*) |
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xz_status=$( |
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exec 4>&1 |
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($xz1 -cdfq -- "$1" 4>&-; echo $? >&4) 3>&- | |
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eval "$cmp" - '"$2"' >&3 |
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);; |
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esac;; |
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*) |
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case "$2" in |
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*[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *.t[abglx]z | *.tbz2 | -) |
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xz_status=$( |
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exec 4>&1 |
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($xz2 -cdfq -- "$2" 4>&-; echo $? >&4) 3>&- | |
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eval "$cmp" '"$1"' - >&3 |
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);; |
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*) |
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eval "$cmp" '"$1"' '"$2"';; |
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esac;; |
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esac |
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else |
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echo >&2 "$0: Invalid number of operands; try \`${0##*/} --help' for help" |
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exit 2 |
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fi |
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|
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cmp_status=$? |
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test "$xz_status" -eq 0 || exit 2 |
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exit $cmp_status |
