cannam@89: #!/bin/sh
cannam@89: # sh is buggy on RS/6000 AIX 3.2. Replace above line with #!/bin/ksh
cannam@89: 
cannam@89: # Bzcmp/diff wrapped for bzip2, 
cannam@89: # adapted from zdiff by Philippe Troin <phil@fifi.org> for Debian GNU/Linux.
cannam@89: 
cannam@89: # Bzcmp and bzdiff are used to invoke the cmp or the  diff  pro-
cannam@89: # gram  on compressed files.  All options specified are passed
cannam@89: # directly to cmp or diff.  If only 1 file is specified,  then
cannam@89: # the  files  compared  are file1 and an uncompressed file1.gz.
cannam@89: # If two files are specified, then they are  uncompressed  (if
cannam@89: # necessary) and fed to cmp or diff.  The exit status from cmp
cannam@89: # or diff is preserved.
cannam@89: 
cannam@89: PATH="/usr/bin:/bin:$PATH"; export PATH
cannam@89: prog=`echo $0 | sed 's|.*/||'`
cannam@89: case "$prog" in
cannam@89:   *cmp) comp=${CMP-cmp}   ;;
cannam@89:   *)    comp=${DIFF-diff} ;;
cannam@89: esac
cannam@89: 
cannam@89: OPTIONS=
cannam@89: FILES=
cannam@89: for ARG
cannam@89: do
cannam@89:     case "$ARG" in
cannam@89:     -*)	OPTIONS="$OPTIONS $ARG";;
cannam@89:      *)	if test -f "$ARG"; then
cannam@89:             FILES="$FILES $ARG"
cannam@89:         else
cannam@89:             echo "${prog}: $ARG not found or not a regular file"
cannam@89: 	    exit 1
cannam@89:         fi ;;
cannam@89:     esac
cannam@89: done
cannam@89: if test -z "$FILES"; then
cannam@89: 	echo "Usage: $prog [${comp}_options] file [file]"
cannam@89: 	exit 1
cannam@89: fi
cannam@89: tmp=`mktemp ${TMPDIR:-/tmp}/bzdiff.XXXXXXXXXX` || {
cannam@89:       echo 'cannot create a temporary file' >&2
cannam@89:       exit 1
cannam@89: }
cannam@89: set $FILES
cannam@89: if test $# -eq 1; then
cannam@89: 	FILE=`echo "$1" | sed 's/.bz2$//'`
cannam@89: 	bzip2 -cd "$FILE.bz2" | $comp $OPTIONS - "$FILE"
cannam@89: 	STAT="$?"
cannam@89: 
cannam@89: elif test $# -eq 2; then
cannam@89: 	case "$1" in
cannam@89:         *.bz2)
cannam@89:                 case "$2" in
cannam@89: 	        *.bz2)
cannam@89: 			F=`echo "$2" | sed 's|.*/||;s|.bz2$||'`
cannam@89:                         bzip2 -cdfq "$2" > $tmp
cannam@89:                         bzip2 -cdfq "$1" | $comp $OPTIONS - $tmp
cannam@89:                         STAT="$?"
cannam@89: 			/bin/rm -f $tmp;;
cannam@89: 
cannam@89:                 *)      bzip2 -cdfq "$1" | $comp $OPTIONS - "$2"
cannam@89:                         STAT="$?";;
cannam@89:                 esac;;
cannam@89:         *)      case "$2" in
cannam@89: 	        *.bz2)
cannam@89:                         bzip2 -cdfq "$2" | $comp $OPTIONS "$1" -
cannam@89:                         STAT="$?";;
cannam@89:                 *)      $comp $OPTIONS "$1" "$2"
cannam@89:                         STAT="$?";;
cannam@89:                 esac;;
cannam@89: 	esac
cannam@89:         exit "$STAT"
cannam@89: else
cannam@89: 	echo "Usage: $prog [${comp}_options] file [file]"
cannam@89: 	exit 1
cannam@89: fi