sde-download: fixed validate.sh to only recompress if the file wasn't already the target file

lib/sde-download/validate.sh

@@ -2,7 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: lib/sde-download/validate.sh
-# Copyright (C) 2006 The OpenSDE Project
+# Copyright (C) 2006 - 2008 The OpenSDE Project
 #
 # More information can be found in the files COPYING and README.
 #
@@ -44,32 +44,38 @@ case "${gzfile##*.}" in
 	*)	format=raw
 		extractor=cat ;;
 esac
+
 echo -n "cksum-test ($format): $gzfile... "
 
-mkdir -p 'tmp/'
-efective=$( $extractor < $gzfile | tee tmp/down.$$.dat | cksum - | cut -f1 -d' ' )
+if [ "$bzfile" = "$gzfile" ]; then
+	tmpfile=
+	effective=$( $extractor < $gzfile | cksum - | cut -f1 -d' ' )
+else
+	mkdir -p 'tmp/'
+	tmpfile="tmp/down.$$.dat"
+	effective=$( $extractor < $gzfile | tee "$tmpfile" | cksum - | cut -f1 -d' ' )
+fi
 
 case "$expected" in
-	X) echo "Ignoring Checksum ($efective)." ;;
-	0) echo "Missing Checksum ($efective)."	;;
-	*) if [ "$efective" != "$expected" ]; then
+	X) echo "Ignoring Checksum ($effective)." ;;
+	0) echo "Missing Checksum ($effective)." ;;
+	*) if [ "$effective" != "$expected" ]; then
 		echo "Wrong Checksum!"
-		echo "Moving to $gzfile.cksum-err ($efective)."
+		echo "Moving to $gzfile.cksum-err ($effective)."
 		mv "$gzfile" "$gzfile.cksum-err"
-		rm tmp/down.$$.dat
+		[ -z "$tmpfile" ] || rm -f "$tmpfile"
 		exit 1
 	else
 		echo "OK."
 	fi
 esac
 
-case "$format" in
-	raw)	mv -f tmp/down.$$.dat "$bzfile"
+if [ -n "$tmpfile" ]; then
+	case "$format" in
+	raw)	mv -f "$tmpfile" "$bzfile"
 		;;
-	*)	bzip2 < tmp/down.$$.dat > "$bzfile"
-		if [ "$gzfile" != "$bzfile" ]; then
-			rm -f "$gzfile"
-		fi
-		rm -f tmp/down.$$.dat
+	*)	bzip2 < "$tmpfile" > "$bzfile"
+		rm -f "$gzfile" "$tmpfile"
 		;;
-esac
+	esac
+fi