| #!@POSIX_SHELL@ |
| |
| # Copyright (C) 1998, 2002, 2006, 2007 Free Software Foundation |
| # Copyright (C) 1993 Jean-loup Gailly |
| |
| # Modified for XZ Utils by Andrew Dudman and Lasse Collin. |
| |
| # 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. |
| |
| #SET_PATH - This line is a placeholder to ease patching this script. |
| |
| # Instead of unsetting XZ_OPT, just make sure that xz will use file format |
| # autodetection. This way memory usage limit and thread limit can be |
| # specified via XZ_OPT. With gzip, bzip2, and lzop it's OK to just unset the |
| # environment variables. |
| xz='@xz@ --format=auto' |
| unset GZIP BZIP BZIP2 LZOP |
| |
| case ${0##*/} in |
| *cmp*) prog=xzcmp; cmp=${CMP:-cmp};; |
| *) prog=xzdiff; cmp=${DIFF:-diff};; |
| esac |
| |
| version="$prog (@PACKAGE_NAME@) @VERSION@" |
| |
| usage="Usage: ${0##*/} [OPTION]... FILE1 [FILE2] |
| Compare FILE1 to FILE2, using their uncompressed contents if they are |
| compressed. If FILE2 is omitted, then the files compared are FILE1 and |
| FILE1 from which the compression format suffix has been stripped. |
| |
| Do comparisons like '$cmp' does. OPTIONs are the same as for '$cmp'. |
| |
| Report bugs to <@PACKAGE_BUGREPORT@>." |
| |
| # sed script to escape all ' for the shell, and then (to handle trailing |
| # newlines correctly) turn trailing X on last line into '. |
| escape=' |
| s/'\''/'\''\\'\'''\''/g |
| $s/X$/'\''/ |
| ' |
| |
| while :; do |
| case $1 in |
| --h*) printf '%s\n' "$usage" || exit 2; exit;; |
| --v*) echo "$version" || exit 2; exit;; |
| --) shift; break;; |
| -*\'*) cmp="$cmp '"`printf '%sX\n' "$1" | sed "$escape"`;; |
| -?*) cmp="$cmp '$1'";; |
| *) break;; |
| esac |
| shift |
| done |
| cmp="$cmp --" |
| |
| for file; do |
| test "X$file" = X- || <"$file" || exit 2 |
| done |
| |
| xz1=$xz |
| xz2=$xz |
| xz_status=0 |
| exec 3>&1 |
| |
| if test $# -eq 1; then |
| case $1 in |
| *[-.]xz | *[-.]lzma | *.t[lx]z) |
| ;; |
| *[-.]bz2 | *.tbz | *.tbz2) |
| xz1=bzip2;; |
| *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) |
| xz1=gzip;; |
| *[-.]lzo | *.tzo) |
| xz1=lzop;; |
| *) |
| echo >&2 "$0: $1: Unknown compressed file name suffix" |
| exit 2;; |
| esac |
| case $1 in |
| *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *[-.]lzo) |
| FILE=`expr "X$1" : 'X\(.*\)[-.][abglmoxzZ2]*$'`;; |
| *.t[abglx]z) |
| FILE=`expr "X$1" : 'X\(.*[-.]t\)[abglx]z$'`ar;; |
| *.tbz2) |
| FILE=`expr "X$1" : 'X\(.*[-.]t\)bz2$'`ar;; |
| *.tzo) |
| FILE=`expr "X$1" : 'X\(.*[-.]t\)zo$'`ar;; |
| esac |
| xz_status=$( |
| exec 4>&1 |
| ($xz1 -cd -- "$1" 4>&-; echo $? >&4) 3>&- | eval "$cmp" - '"$FILE"' >&3 |
| ) |
| elif test $# -eq 2; then |
| case $1 in |
| *[-.]bz2 | *.tbz | *.tbz2) xz1=bzip2;; |
| *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) xz1=gzip;; |
| *[-.]lzo | *.tzo) xz1=lzop;; |
| esac |
| case $2 in |
| *[-.]bz2 | *.tbz | *.tbz2) xz2=bzip2;; |
| *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) xz2=gzip;; |
| *[-.]lzo | *.tzo) xz2=lzop;; |
| esac |
| case $1 in |
| *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *.t[abglx]z | *.tbz2 | *[-.]lzo | *.tzo | -) |
| case "$2" in |
| *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *.t[abglx]z | *.tbz2 | *[-.]lzo | *.tzo | -) |
| if test "$1$2" = --; then |
| xz_status=$( |
| exec 4>&1 |
| ($xz1 -cdfq - 4>&-; echo $? >&4) 3>&- | |
| eval "$cmp" - - >&3 |
| ) |
| elif # Reject Solaris 8's buggy /bin/bash 2.03. |
| echo X | (echo X | eval "$cmp" /dev/fd/5 - >/dev/null 2>&1) 5<&0; then |
| xz_status=$( |
| exec 4>&1 |
| ($xz1 -cdfq -- "$1" 4>&-; echo $? >&4) 3>&- | |
| ( ($xz2 -cdfq -- "$2" 4>&-; echo $? >&4) 3>&- 5<&- </dev/null | |
| eval "$cmp" /dev/fd/5 - >&3) 5<&0 |
| ) |
| cmp_status=$? |
| case $xz_status in |
| *[1-9]*) xz_status=1;; |
| *) xz_status=0;; |
| esac |
| (exit $cmp_status) |
| else |
| F=`expr "/$2" : '.*/\(.*\)[-.][ablmotxz2]*$'` || F=$prog |
| tmp= |
| trap ' |
| test -n "$tmp" && rm -rf "$tmp" |
| (exit 2); exit 2 |
| ' HUP INT PIPE TERM 0 |
| if type mktemp >/dev/null 2>&1; then |
| # Note that FreeBSD's mktemp isn't fully compatible with |
| # the implementations from mktemp.org and GNU coreutils. |
| # It is important that the -t argument is the last argument |
| # and that no "--" is used between -t and the template argument. |
| # This way this command works on all implementations. |
| tmp=`mktemp -d -t "$prog.XXXXXXXXXX"` || exit 2 |
| else |
| # Fallback code if mktemp is missing. This isn't as |
| # robust as using mktemp since this doesn't try with |
| # different file names in case of a file name conflict. |
| # |
| # There's no need to save the original umask since |
| # we don't create any non-temp files. Note that using |
| # mkdir -m 0077 isn't secure since some mkdir implementations |
| # create the dir with the default umask and chmod the |
| # the dir afterwards. |
| umask 0077 |
| mkdir -- "${TMPDIR-/tmp}/$prog.$$" || exit 2 |
| tmp="${TMPDIR-/tmp}/$prog.$$" |
| fi |
| $xz2 -cdfq -- "$2" > "$tmp/$F" || exit 2 |
| xz_status=$( |
| exec 4>&1 |
| ($xz1 -cdfq -- "$1" 4>&-; echo $? >&4) 3>&- | |
| eval "$cmp" - '"$tmp/$F"' >&3 |
| ) |
| cmp_status=$? |
| rm -rf "$tmp" || xz_status=$? |
| trap - HUP INT PIPE TERM 0 |
| (exit $cmp_status) |
| fi;; |
| *) |
| xz_status=$( |
| exec 4>&1 |
| ($xz1 -cdfq -- "$1" 4>&-; echo $? >&4) 3>&- | |
| eval "$cmp" - '"$2"' >&3 |
| );; |
| esac;; |
| *) |
| case "$2" in |
| *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *.t[abglx]z | *.tbz2 | *[-.]lzo | *.tzo | -) |
| xz_status=$( |
| exec 4>&1 |
| ($xz2 -cdfq -- "$2" 4>&-; echo $? >&4) 3>&- | |
| eval "$cmp" '"$1"' - >&3 |
| );; |
| *) |
| eval "$cmp" '"$1"' '"$2"';; |
| esac;; |
| esac |
| else |
| echo >&2 "$0: Invalid number of operands; try \`${0##*/} --help' for help" |
| exit 2 |
| fi |
| |
| cmp_status=$? |
| test "$xz_status" -eq 0 || exit 2 |
| exit $cmp_status |
