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-rw-r--r--Utilities/cmbzip2/bzdiff76
1 files changed, 76 insertions, 0 deletions
diff --git a/Utilities/cmbzip2/bzdiff b/Utilities/cmbzip2/bzdiff
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+++ b/Utilities/cmbzip2/bzdiff
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+#!/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