68 lines
1.8 KiB
Bash
68 lines
1.8 KiB
Bash
#!/bin/sh
|
|
|
|
# Zcmp and zdiff are used to invoke the cmp or the diff pro-
|
|
# gram on compressed files. All options specified are passed
|
|
# directly to cmp or diff. If only 1 file is specified, then
|
|
# the files compared are file1 and an uncompressed file1.gz.
|
|
# If two files are specified, then they are uncompressed (if
|
|
# necessary) and fed to cmp or diff. The exit status from cmp
|
|
# or diff is preserved.
|
|
|
|
prog=`echo $0 | sed 's|.*/||'`
|
|
case "$prog" in
|
|
*cmp) comp=${CMP-cmp} ;;
|
|
*) comp=${DIFF-diff} ;;
|
|
esac
|
|
|
|
OPTIONS=
|
|
FILES=
|
|
for ARG
|
|
do
|
|
case "$ARG" in
|
|
-*) OPTIONS="$OPTIONS $ARG";;
|
|
*) if test -f "$ARG"; then
|
|
FILES="$FILES $ARG"
|
|
else
|
|
echo "${prog}: $ARG not found or not a regular file"
|
|
exit 1
|
|
fi ;;
|
|
esac
|
|
done
|
|
if test -z "$FILES"; then
|
|
echo "Usage: $prog [${comp}_options] file [file]"
|
|
exit 1
|
|
fi
|
|
set $FILES
|
|
if test $# -eq 1; then
|
|
FILE=`echo "$1" | sed 's/[-.][zZtga]*$//'`
|
|
gzip -cd "$1" | $comp $OPTIONS - "$FILE"
|
|
STAT="$?"
|
|
|
|
elif test $# -eq 2; then
|
|
case "$1" in
|
|
*[-.]gz | *[-.][zZ] | *.t[ga]z)
|
|
case "$2" in
|
|
*[-.]gz | *[-.][zZ] | *.t[ga]z)
|
|
F=`echo "$2" | sed 's|.*/||;s|[-.][zZtga]*$||'`
|
|
gzip -cd "$2" > /tmp/"$F".$$
|
|
gzip -cd "$1" | $comp $OPTIONS - /tmp/"$F".$$
|
|
STAT="$?"
|
|
/bin/rm -f /tmp/"$F".$$;;
|
|
|
|
*) gzip -cd "$1" | $comp $OPTIONS - "$2"
|
|
STAT="$?";;
|
|
esac;;
|
|
*) case "$2" in
|
|
*[-.]gz | *[-.][zZ] | *.t[ga]z)
|
|
gzip -cd "$2" | $comp $OPTIONS "$1" -
|
|
STAT="$?";;
|
|
*) $comp $OPTIONS "$1" "$2"
|
|
STAT="$?";;
|
|
esac;;
|
|
esac
|
|
exit "$STAT"
|
|
else
|
|
echo "Usage: $prog [${comp}_options] file [file]"
|
|
exit 1
|
|
fi
|