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#!/bin/sh |
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# sh is buggy on RS/6000 AIX 3.2. Replace above line with #!/bin/ksh |
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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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# 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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# You should have received a copy of the GNU General Public License along |
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# with this program; if not, write to the Free Software Foundation, Inc., |
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
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|
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PATH=${GZIP_BINDIR-'/usr/bin'}:$PATH |
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|
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case $1 in |
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--__cmp) shift |
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prog=cmp; cmp='${CMP-cmp}' ;; |
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*) prog=diff; cmp='${DIFF-diff}';; |
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esac |
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|
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version="z$prog (gzip) 1.3.12 |
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Copyright (C) 2007 Free Software Foundation, Inc. |
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This is free software. You may redistribute copies of it under the terms of |
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the GNU General Public License <http://www.gnu.org/licenses/gpl.html>. |
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There is NO WARRANTY, to the extent permitted by law. |
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|
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Written by Jean-loup Gailly." |
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|
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usage="Usage: $0 [OPTION]... FILE1 [FILE2] |
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Compare FILE1 to FILE2, using their uncompressed contents if they are |
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compressed. If FILE2 is omitted, compare FILE1 to the uncompressed |
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contents of FILE1.gz. Do comparisons like '$prog' does. |
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|
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OPTIONs are the same as for '$prog'. |
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|
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Report bugs to <bug-gzip@gnu.org>." |
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|
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# sed script to escape all ' for the shell, and then (to handle trailing |
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# newlines correctly) turn trailing X on last line into '. |
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escape=' |
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s/'\''/'\''\\'\'''\''/g |
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$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 |
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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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gzip_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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*[-.]gz* | *[-.][zZ] | *.t[ga]z) |
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FILE=`expr "X$1" : 'X\(.*\)[-.][zZtga]*$'` |
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gzip_status=$( |
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exec 4>&1 |
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(gzip -cd -- "$1" 4>&-; echo $? >&4) 3>&- | eval "$cmp" - '"$FILE"' >&3 |
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);; |
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*) |
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echo >&2 "$0: $1: unknown compressed file extension" |
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exit 2;; |
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esac |
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elif test $# -eq 2; then |
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case "$1" in |
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*[-.]gz* | *[-.][zZ] | *.t[ga]z | -) |
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case "$2" in |
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*[-.]gz* | *[-.][zZ] | *.t[ga]z | -) |
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if test "$1$2" = --; then |
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gzip_status=$( |
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exec 4>&1 |
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(gzip -cdfq - 4>&-; echo $? >&4) 3>&- | |
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eval "$cmp" - - >&3 |
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) |
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elif |
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# Reject Solaris 8's buggy /bin/bash 2.03. |
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echo X | |
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(echo X | eval "$cmp" /dev/fd/5 - >/dev/null 2>&1) \ |
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5<&0 |
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then |
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gzip_status=$( |
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exec 4>&1 |
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(gzip -cdfq -- "$1" 4>&-; echo $? >&4) 3>&- | |
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( (gzip -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 $gzip_status in |
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*[1-9]*) gzip_status=1;; |
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*) gzip_status=0;; |
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esac |
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else |
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F=`expr "/$2" : '.*/\(.*\)[-.][zZtga]*$'` || F=$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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if type mktemp >/dev/null 2>&1; then |
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tmp=`mktemp -t -- "$F.XXXXXX"` || exit 2 |
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else |
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set -C |
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tmp=${TMPDIR-/tmp}/$F.$$ |
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fi |
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gzip -cdfq -- "$2" > "$tmp" || exit 2 |
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gzip_status=$( |
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exec 4>&1 |
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(gzip -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 "$tmp" || gzip_status=$? |
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trap - HUP INT PIPE TERM 0 |
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(exit $cmp_status) |
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fi;; |
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*) |
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gzip_status=$( |
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exec 4>&1 |
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(gzip -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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*) case "$2" in |
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*[-.]gz* | *[-.][zZ] | *.t[ga]z | -) |
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gzip_status=$( |
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exec 4>&1 |
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(gzip -cdfq -- "$2" 4>&-; echo $? >&4) 3>&- | |
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eval "$cmp" '"$1"' - >&3 |
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);; |
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*) eval "$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 "$gzip_status" -eq 0 || exit 2 |
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exit $cmp_status |
