Initial class construction
This commit is contained in:
João Narciso
167
Git/usr/bin/zdiff
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167
Git/usr/bin/zdiff
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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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# Copyright (C) 1998, 2002, 2006-2007, 2009-2018 Free Software Foundation, Inc.
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# Copyright (C) 1993 Jean-loup Gailly
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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 3 of the License, or
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# (at your option) any later version.
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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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# 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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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='${DIFF-diff}';;
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esac
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version="z$prog (gzip) 1.10
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Copyright (C) 2009, 2011-2018 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 <https://www.gnu.org/licenses/gpl.html>.
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There is NO WARRANTY, to the extent permitted by law.
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Written by Jean-loup Gailly."
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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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OPTIONs are the same as for '$prog'.
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Report bugs to <bug-gzip@gnu.org>."
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# sed script to escape all ' for the shell, and then (to handle trailing
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# newlines correctly) turn trailing X on last line into '.
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escape='
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s/'\''/'\''\\'\'''\''/g
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$s/X$/'\''/
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'
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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*) printf '%s\n' "$version" || exit 2; exit;;
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--) shift; break;;
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-*\'*) cmp="$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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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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gzip_status=0
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exec 3>&1
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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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printf >&2 '%s\n' "$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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cmp_status=$?
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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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(exit $cmp_status)
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else
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tmp=
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trap '
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test -n "$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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case $TMPDIR in
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/ | /*/) ;;
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/*) TMPDIR=$TMPDIR/;;
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*) TMPDIR=/tmp/;;
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esac
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if type mktemp >/dev/null 2>&1; then
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tmp=`mktemp "${TMPDIR}zdiffXXXXXXXXX"` ||
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exit 2
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else
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set -C
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tmp=${TMPDIR}zdiff$$
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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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printf >&2 '%s\n' \
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"$0: invalid number of operands; try \`$0 --help' for help"
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exit 2
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fi
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cmp_status=$?
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test "$gzip_status" -eq 0 || exit 2
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exit $cmp_status
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