jsshrink.sh
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jsshrink.sh
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	#!/bin/sh
	JS_DIR=`dirname "$0"`/../program/js
	CLOSURE_COMPILER_URL='http://closure-compiler.googlecode.com/files/compiler-latest.zip'

	do_shrink() {
	rm -f "$2"
	java -jar compiler.jar --compilation_level=SIMPLE_OPTIMIZATIONS --js="$1" --js_output_file="$2"
	}

	if [ ! -d "$JS_DIR" ]; then
	echo "Directory $JS_DIR not found."
	exit 1
	fi

	if java -version >/dev/null 2>&1; then
	:
	else
	echo "Java not found. Please ensure that the 'java' program is in your PATH."
	exit 1
	fi

	if [ ! -r "compiler.jar" ]; then
	if which wget >/dev/null 2>&1 && which unzip >/dev/null 2>&1; then
	wget "$CLOSURE_COMPILER_URL" -O "/tmp/$$.zip"
	elif which curl >/dev/null 2>&1 && which unzip >/dev/null 2>&1; then
	curl "$CLOSURE_COMPILER_URL" -o "/tmp/$$.zip"
	else
	echo "Please download $CLOSURE_COMPILER_URL and extract compiler.jar to this directory."
	exit 1
	fi
	unzip "/tmp/$$.zip" "compiler.jar"
	rm -f "/tmp/$$.zip"
	fi

	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"
	else
	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"
	done