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#!/bin/sh
# sh is buggy on RS/6000 AIX 3.2. Replace above line with #!/bin/ksh
# lzcmp and lzdiff 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.lzma.
# If two files are specified, then they are uncompressed 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}: $ARG not found or not a regular file"
exit 2
fi ;;
esac
done
if test -z "$FILES"; then
echo "Usage: $prog [${comp}_options] file [file]"
exit 2
fi
set $FILES
if test $# -eq 1; then
FILE=`echo "$1" | sed 's/[-.][tlaz]*$//'`
lzma -dc "$1" | $comp $OPTIONS - "$FILE"
elif test $# -eq 2; then
case "$1" in
*[-.]lzma | *.t[la]z)
case "$2" in
*[-.]lzma | *.t[la]z)
F=`echo "$2" | sed 's|.*/||;s|[-.][tlaz]*||'`
TF=`/usr/bin/mktemp ${TMPDIR:-/tmp}/"$F".XXXXXXXXXX` || exit 1
trap 'rm -f "$TF"; exit 2' EXIT HUP INT PIPE TERM
lzma -dc "$2" > "$TF" || exit
lzma -dc "$1" | $comp $OPTIONS - "$TF"
STAT="$?"
rm -f "$TF" || STAT=2
trap EXIT HUP INT PIPE TERM
exit $STAT;;
*) lzma -dc "$1" | $comp $OPTIONS - "$2";;
esac;;
*) case "$2" in
*[-.]lzma | *.t[la]z)
lzma -dc "$2" | $comp $OPTIONS "$1" -;;
*) $comp $OPTIONS "$1" "$2";;
esac;;
esac
else
echo "Usage: $prog [${comp}_options] file [file]"
exit 2
fi
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