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authorLasse Collin <lasse.collin@tukaani.org>2007-12-09 00:42:33 +0200
committerLasse Collin <lasse.collin@tukaani.org>2007-12-09 00:42:33 +0200
commit5d018dc03549c1ee4958364712fb0c94e1bf2741 (patch)
tree1b211911fb33fddb3f04b77f99e81df23623ffc4 /src/scripts/lzdiff
downloadxz-5d018dc03549c1ee4958364712fb0c94e1bf2741.tar.xz
Imported to git.
Diffstat (limited to 'src/scripts/lzdiff')
-rwxr-xr-xsrc/scripts/lzdiff67
1 files changed, 67 insertions, 0 deletions
diff --git a/src/scripts/lzdiff b/src/scripts/lzdiff
new file mode 100755
index 00000000..c867cbea
--- /dev/null
+++ b/src/scripts/lzdiff
@@ -0,0 +1,67 @@
+#!/bin/sh
+# sh is buggy on RS/6000 AIX 3.2. Replace above line with #!/bin/ksh
+
+# lzcmp and lzdiff 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.lzma.
+# If two files are specified, then they are uncompressed and
+# fed to cmp or diff. The exit status from cmp or diff is
+# preserved.
+
+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}: $ARG not found or not a regular file"
+ exit 2
+ fi ;;
+ esac
+done
+if test -z "$FILES"; then
+ echo "Usage: $prog [${comp}_options] file [file]"
+ exit 2
+fi
+set $FILES
+if test $# -eq 1; then
+ FILE=`echo "$1" | sed 's/[-.][tlaz]*$//'`
+ lzma -dc "$1" | $comp $OPTIONS - "$FILE"
+
+elif test $# -eq 2; then
+ case "$1" in
+ *[-.]lzma | *.t[la]z)
+ case "$2" in
+ *[-.]lzma | *.t[la]z)
+ F=`echo "$2" | sed 's|.*/||;s|[-.][tlaz]*||'`
+ TF=`/usr/bin/mktemp ${TMPDIR:-/tmp}/"$F".XXXXXXXXXX` || exit 1
+ trap 'rm -f "$TF"; exit 2' EXIT HUP INT PIPE TERM
+ lzma -dc "$2" > "$TF" || exit
+ lzma -dc "$1" | $comp $OPTIONS - "$TF"
+ STAT="$?"
+ rm -f "$TF" || STAT=2
+ trap EXIT HUP INT PIPE TERM
+ exit $STAT;;
+
+ *) lzma -dc "$1" | $comp $OPTIONS - "$2";;
+ esac;;
+ *) case "$2" in
+ *[-.]lzma | *.t[la]z)
+ lzma -dc "$2" | $comp $OPTIONS "$1" -;;
+ *) $comp $OPTIONS "$1" "$2";;
+ esac;;
+ esac
+else
+ echo "Usage: $prog [${comp}_options] file [file]"
+ exit 2
+fi