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