#!/bin/sh
|
# sh is buggy on RS/6000 AIX 3.2. Replace above line with #!/bin/ksh
|
|
# Bzcmp/diff wrapped for bzip2,
|
# adapted from zdiff by Philippe Troin <phil@fifi.org> for Debian GNU/Linux.
|
|
# Bzcmp and bzdiff 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.
|
|
PATH="/usr/bin:/bin:$PATH"; export PATH
|
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
|
tmp=`mktemp ${TMPDIR:-/tmp}/bzdiff.XXXXXXXXXX` || {
|
echo 'cannot create a temporary file' >&2
|
exit 1
|
}
|
set $FILES
|
if test $# -eq 1; then
|
FILE=`echo "$1" | sed 's/.bz2$//'`
|
bzip2 -cd "$FILE.bz2" | $comp $OPTIONS - "$FILE"
|
STAT="$?"
|
|
elif test $# -eq 2; then
|
case "$1" in
|
*.bz2)
|
case "$2" in
|
*.bz2)
|
F=`echo "$2" | sed 's|.*/||;s|.bz2$||'`
|
bzip2 -cdfq "$2" > $tmp
|
bzip2 -cdfq "$1" | $comp $OPTIONS - $tmp
|
STAT="$?"
|
/bin/rm -f $tmp;;
|
|
*) bzip2 -cdfq "$1" | $comp $OPTIONS - "$2"
|
STAT="$?";;
|
esac;;
|
*) case "$2" in
|
*.bz2)
|
bzip2 -cdfq "$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
|
