| 1 | #!/bin/sh
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| 2 | # sh is buggy on RS/6000 AIX 3.2. Replace above line with #!/bin/ksh
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| 3 |
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| 4 | # Bzcmp/diff wrapped for bzip2,
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| 5 | # adapted from zdiff by Philippe Troin <phil@fifi.org> for Debian GNU/Linux.
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| 6 |
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| 7 | # Bzcmp and bzdiff are used to invoke the cmp or the diff pro-
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| 8 | # gram on compressed files. All options specified are passed
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| 9 | # directly to cmp or diff. If only 1 file is specified, then
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| 10 | # the files compared are file1 and an uncompressed file1.gz.
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| 11 | # If two files are specified, then they are uncompressed (if
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| 12 | # necessary) and fed to cmp or diff. The exit status from cmp
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| 13 | # or diff is preserved.
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| 14 |
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| 15 | PATH="/usr/bin:/bin:$PATH"; export PATH
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| 16 | prog=`echo $0 | sed 's|.*/||'`
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| 17 | case "$prog" in
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| 18 | *cmp) comp=${CMP-cmp} ;;
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| 19 | *) comp=${DIFF-diff} ;;
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| 20 | esac
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| 21 |
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| 22 | OPTIONS=
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| 23 | FILES=
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| 24 | for ARG
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| 25 | do
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| 26 | case "$ARG" in
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| 27 | -*) OPTIONS="$OPTIONS $ARG";;
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| 28 | *) if test -f "$ARG"; then
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| 29 | FILES="$FILES $ARG"
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| 30 | else
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| 31 | echo "${prog}: $ARG not found or not a regular file"
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| 32 | exit 1
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| 33 | fi ;;
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| 34 | esac
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| 35 | done
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| 36 | if test -z "$FILES"; then
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| 37 | echo "Usage: $prog [${comp}_options] file [file]"
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| 38 | exit 1
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| 39 | fi
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| 40 | tmp=`mktemp ${TMPDIR:-/tmp}/bzdiff.XXXXXXXXXX` || {
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| 41 | echo 'cannot create a temporary file' >&2
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| 42 | exit 1
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| 43 | }
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| 44 | set $FILES
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| 45 | if test $# -eq 1; then
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| 46 | FILE=`echo "$1" | sed 's/.bz2$//'`
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| 47 | bzip2 -cd "$FILE.bz2" | $comp $OPTIONS - "$FILE"
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| 48 | STAT="$?"
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| 49 |
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| 50 | elif test $# -eq 2; then
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| 51 | case "$1" in
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| 52 | *.bz2)
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| 53 | case "$2" in
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| 54 | *.bz2)
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| 55 | F=`echo "$2" | sed 's|.*/||;s|.bz2$||'`
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| 56 | bzip2 -cdfq "$2" > $tmp
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| 57 | bzip2 -cdfq "$1" | $comp $OPTIONS - $tmp
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| 58 | STAT="$?"
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| 59 | /bin/rm -f $tmp;;
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| 60 |
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| 61 | *) bzip2 -cdfq "$1" | $comp $OPTIONS - "$2"
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| 62 | STAT="$?";;
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| 63 | esac;;
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| 64 | *) case "$2" in
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| 65 | *.bz2)
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| 66 | bzip2 -cdfq "$2" | $comp $OPTIONS "$1" -
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| 67 | STAT="$?";;
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| 68 | *) $comp $OPTIONS "$1" "$2"
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| 69 | STAT="$?";;
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| 70 | esac;;
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| 71 | esac
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| 72 | exit "$STAT"
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| 73 | else
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| 74 | echo "Usage: $prog [${comp}_options] file [file]"
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| 75 | exit 1
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| 76 | fi
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