Allow to shrink any file passed as argument

bin/jsshrink.sh

@@ -1,11 +1,12 @@
 #!/bin/sh
 JS_DIR=`dirname "$0"`/../program/js
 JAR_DIR='/tmp'
+LANG_IN='ECMASCRIPT3'
 CLOSURE_COMPILER_URL='http://closure-compiler.googlecode.com/files/compiler-latest.zip'
 
 do_shrink() {
 	rm -f "$2"
-	java -jar $JAR_DIR/compiler.jar --compilation_level=SIMPLE_OPTIMIZATIONS --js="$1" --js_output_file="$2"
+	java -jar $JAR_DIR/compiler.jar --compilation_level=SIMPLE_OPTIMIZATIONS --js="$1" --js_output_file="$2" --language_in="$3"
 }
 
 if [ ! -d "$JS_DIR" ]; then
@@ -37,6 +38,24 @@ if [ ! -r "$JAR_DIR/compiler.jar" ]; then
 	rm -f "/tmp/$$.zip"
 fi
 
+# compress single file from argument
+if [ $# -gt 0 ]; then
+	JS_DIR=`dirname "$1"`
+	JS_FILE="$1"
+
+	if [ $# -gt 1 ]; then
+		LANG_IN="$2"
+	fi
+
+	if [ ! -r "${JS_FILE}.src" ]; then
+		mv "$JS_FILE" "${JS_FILE}.src"
+	fi
+	echo "Shrinking $JS_FILE"
+	do_shrink "${JS_FILE}.src" "$JS_FILE" "$LANG_IN"
+	exit
+fi
+
+# default: compress application scripts
 for fn in app common googiespell list; do
 	if [ -r "$JS_DIR/${fn}.js.src" ]; then
 		echo "$JS_DIR/${fn}.js.src already exists, not overwriting"
@@ -44,5 +63,5 @@ for fn in app common googiespell list; do
 		mv "$JS_DIR/${fn}.js" "$JS_DIR/${fn}.js.src"
 	fi
 	echo "Shrinking $JS_DIR/${fn}.js"
-	do_shrink "$JS_DIR/${fn}.js.src" "$JS_DIR/${fn}.js"
+	do_shrink "$JS_DIR/${fn}.js.src" "$JS_DIR/${fn}.js" "$LANG_IN"
 done