View file File name : zdiff Content :#!/bin/sh # sh is buggy on RS/6000 AIX 3.2. Replace above line with #!/bin/ksh # Copyright (C) 1998, 2002, 2006, 2007, 2009 Free Software Foundation # Copyright (C) 1993 Jean-loup Gailly # 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 3 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. # You should have received a copy of the GNU General Public License along # with this program; if not, write to the Free Software Foundation, Inc., # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. bindir='/usr/bin' case $1 in --__bindir) bindir=${2?}; shift; shift;; esac PATH=$bindir:$PATH case $1 in --__cmp) shift prog=cmp; cmp='${CMP-cmp}' ;; *) prog=diff; cmp='${DIFF-diff}';; esac version="z$prog (gzip) 1.5 Copyright (C) 2009, 2011-2012 Free Software Foundation, Inc. This is free software. You may redistribute copies of it under the terms of the GNU General Public License <http://www.gnu.org/licenses/gpl.html>. There is NO WARRANTY, to the extent permitted by law. Written by Jean-loup Gailly." usage="Usage: $0 [OPTION]... FILE1 [FILE2] Compare FILE1 to FILE2, using their uncompressed contents if they are compressed. If FILE2 is omitted, compare FILE1 to the uncompressed contents of FILE1.gz. Do comparisons like '$prog' does. OPTIONs are the same as for '$prog'. Report bugs to <bug-gzip@gnu.org>." # 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 gzip_status=0 exec 3>&1 if test $# -eq 1; then case $1 in *[-.]gz* | *[-.][zZ] | *.t[ga]z) FILE=`expr "X$1" : 'X\(.*\)[-.][zZtga]*$'` gzip_status=$( exec 4>&1 (gzip -cd -- "$1" 4>&-; echo $? >&4) 3>&- | eval "$cmp" - '"$FILE"' >&3 );; *) echo >&2 "$0: $1: unknown compressed file extension" exit 2;; esac elif test $# -eq 2; then case "$1" in *[-.]gz* | *[-.][zZ] | *.t[ga]z | -) case "$2" in *[-.]gz* | *[-.][zZ] | *.t[ga]z | -) if test "$1$2" = --; then gzip_status=$( exec 4>&1 (gzip -cdfq - 4>&-; echo $? >&4) 3>&- | eval "$cmp" - - >&3 ) elif # Reject Solaris 8's buggy /bin/bash 2.03. echo X | (echo X | eval "$cmp" /dev/fd/5 - >/dev/null 2>&1) \ 5<&0 then gzip_status=$( exec 4>&1 (gzip -cdfq -- "$1" 4>&-; echo $? >&4) 3>&- | ( (gzip -cdfq -- "$2" 4>&-; echo $? >&4) 3>&- 5<&- </dev/null | eval "$cmp" /dev/fd/5 - >&3) 5<&0 ) cmp_status=$? case $gzip_status in *[1-9]*) gzip_status=1;; *) gzip_status=0;; esac (exit $cmp_status) else F=`expr "/$2" : '.*/\(.*\)[-.][zZtga]*$'` || F=$prog tmp= trap ' test -n "$tmp" && rm -f "$tmp" (exit 2); exit 2 ' HUP INT PIPE TERM 0 if type mktemp >/dev/null 2>&1; then tmp=`mktemp -t -- "$F.XXXXXX"` || exit 2 else set -C tmp=${TMPDIR-/tmp}/$F.$$ fi gzip -cdfq -- "$2" > "$tmp" || exit 2 gzip_status=$( exec 4>&1 (gzip -cdfq -- "$1" 4>&-; echo $? >&4) 3>&- | eval "$cmp" - '"$tmp"' >&3 ) cmp_status=$? rm -f "$tmp" || gzip_status=$? trap - HUP INT PIPE TERM 0 (exit $cmp_status) fi;; *) gzip_status=$( exec 4>&1 (gzip -cdfq -- "$1" 4>&-; echo $? >&4) 3>&- | eval "$cmp" - '"$2"' >&3 );; esac;; *) case "$2" in *[-.]gz* | *[-.][zZ] | *.t[ga]z | -) gzip_status=$( exec 4>&1 (gzip -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 "$gzip_status" -eq 0 || exit 2 exit $cmp_status