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#!/bin/sh |
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# sh is buggy on RS/6000 AIX 3.2. Replace above line with #!/bin/ksh |
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|
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# Bzcmp/diff wrapped for bzip2, |
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# adapted from zdiff by Philippe Troin <phil@fifi.org> for Debian GNU/Linux. |
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|
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# Bzcmp and bzdiff are used to invoke the cmp or the diff pro- |
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# gram on compressed files. All options specified are passed |
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# directly to cmp or diff. If only 1 file is specified, then |
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# the files compared are file1 and an uncompressed file1.gz. |
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# If two files are specified, then they are uncompressed (if |
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# necessary) and fed to cmp or diff. The exit status from cmp |
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# or diff is preserved. |
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|
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PATH="/usr/bin:/bin:$PATH"; export PATH |
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prog=`echo $0 | sed 's|.*/||'` |
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case "$prog" in |
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*cmp) comp=${CMP-cmp} ;; |
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*) comp=${DIFF-diff} ;; |
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esac |
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|
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OPTIONS= |
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FILES= |
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for ARG |
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do |
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case "$ARG" in |
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-*) OPTIONS="$OPTIONS $ARG";; |
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*) if test -f "$ARG"; then |
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FILES="$FILES $ARG" |
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else |
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echo "${prog}: $ARG not found or not a regular file" |
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exit 1 |
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fi ;; |
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esac |
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done |
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if test -z "$FILES"; then |
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echo "Usage: $prog [${comp}_options] file [file]" |
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exit 1 |
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fi |
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tmp=`mktemp ${TMPDIR:-/tmp}/bzdiff.XXXXXXXXXX` || { |
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echo 'cannot create a temporary file' >&2 |
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exit 1 |
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} |
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set $FILES |
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if test $# -eq 1; then |
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FILE=`echo "$1" | sed 's/.bz2$//'` |
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bzip2 -cd "$FILE.bz2" | $comp $OPTIONS - "$FILE" |
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STAT="$?" |
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|
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elif test $# -eq 2; then |
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case "$1" in |
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*.bz2) |
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case "$2" in |
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*.bz2) |
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F=`echo "$2" | sed 's|.*/||;s|.bz2$||'` |
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bzip2 -cdfq "$2" > $tmp |
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bzip2 -cdfq "$1" | $comp $OPTIONS - $tmp |
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STAT="$?" |
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/bin/rm -f $tmp;; |
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|
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*) bzip2 -cdfq "$1" | $comp $OPTIONS - "$2" |
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STAT="$?";; |
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esac;; |
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*) case "$2" in |
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*.bz2) |
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bzip2 -cdfq "$2" | $comp $OPTIONS "$1" - |
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STAT="$?";; |
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*) $comp $OPTIONS "$1" "$2" |
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STAT="$?";; |
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esac;; |
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esac |
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exit "$STAT" |
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else |
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echo "Usage: $prog [${comp}_options] file [file]" |
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exit 1 |
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fi |
