diff options
Diffstat (limited to 'zdiff.in')
| -rw-r--r-- | zdiff.in | 65 |
1 files changed, 39 insertions, 26 deletions
@@ -11,34 +11,47 @@ # or diff is preserved. PATH="BINDIR:$PATH"; export PATH -prog=`echo $0 | sed 's|.*/||'` -case "$prog" in - *cmp) comp=${CMP-cmp} ;; - *) comp=${DIFF-diff} ;; +case "$0" in + *cmp) prog=cmp ; comp=${CMP-cmp} ;; + *) prog=diff; comp=${DIFF-diff} ;; esac +version="z$prog (gzip) @VERSION@ +Copyright (C) 2006 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: z$prog [OPTION]... FILE1 [FILE2] +Compare FILE1 to FILE2, using their uncompressed contents if they are +compressed. If FILE2 is omitted, compare FILE1 to the uncompressed +contents of FILE1.gz. Do comparisons like '$prog' does. + +OPTIONs are the same as for '$prog'. + +Report bugs to <bug-gzip@gnu.org>." + OPTIONS= FILES= -for ARG -do - case "$ARG" in - -*) OPTIONS="$OPTIONS $ARG";; - *) if test -f "$ARG"; then - FILES="$FILES $ARG" - else - echo "${prog}: $ARG not found or not a regular file" - exit 2 - fi ;; - esac +while :; do + case $1 in + --h*) echo "$usage" || exit 2; exit;; + --v*) echo "$version" || exit 2; exit;; + --) shift; break;; + -*) OPTIONS="$OPTIONS $ARG"; shift;; + esac +done +for file; do + test -f "$file" || { + echo "$prog: $file not found or not a regular file" + exit 2 + } done -if test -z "$FILES"; then - echo "Usage: $prog [${comp}_options] file [file]" - exit 2 -fi -set $FILES if test $# -eq 1; then FILE=`echo "$1" | sed 's/[-.][zZtga]*$//'` - gzip -cd "$1" | $comp $OPTIONS - "$FILE" + gzip -cd -- "$1" | $comp $OPTIONS - "$FILE" elif test $# -eq 2; then case "$1" in @@ -48,22 +61,22 @@ elif test $# -eq 2; then F=`echo "$2" | sed 's|.*/||;s|[-.][zZtga]*||'` set -C trap 'rm -f /tmp/"$F".$$; exit 2' HUP INT PIPE TERM 0 - gzip -cdfq "$2" > /tmp/"$F".$$ || exit - gzip -cdfq "$1" | $comp $OPTIONS - /tmp/"$F".$$ + gzip -cdfq -- "$2" > /tmp/"$F".$$ || exit + gzip -cdfq -- "$1" | $comp $OPTIONS - /tmp/"$F".$$ STAT="$?" /bin/rm -f /tmp/"$F".$$ || STAT=2 trap - HUP INT PIPE TERM 0 exit $STAT;; - *) gzip -cdfq "$1" | $comp $OPTIONS - "$2";; + *) gzip -cdfq -- "$1" | $comp $OPTIONS - "$2";; esac;; *) case "$2" in *[-.]gz* | *[-.][zZ] | *.t[ga]z) - gzip -cdfq "$2" | $comp $OPTIONS "$1" -;; + gzip -cdfq -- "$2" | $comp $OPTIONS "$1" -;; *) $comp $OPTIONS "$1" "$2";; esac;; esac else - echo "Usage: $prog [${comp}_options] file [file]" + echo "$usage" exit 2 fi |