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#!/bin/sh
PWD=`dirname "$0"`
JS_DIR="$PWD/../program/js"
JAR_DIR='/tmp'
LANG_IN='ECMASCRIPT3'
# latest version requires Java 7, we'll use an older one
#CLOSURE_COMPILER_URL='http://dl.google.com/closure-compiler/compiler-latest.zip'
CLOSURE_COMPILER_URL='http://dl.google.com/closure-compiler/compiler-20131014.zip'
do_shrink() {
rm -f "$2"
# copy the first comment block with license information for LibreJS
grep -q '@lic' $1 && sed -n '/\/\*/,/\*\// { p; /\*\//q; }' $1 > $2
java -jar $JAR_DIR/compiler.jar --compilation_level=SIMPLE_OPTIMIZATIONS --js="$1" --language_in="$3" >> $2
}
if [ ! -d "$JS_DIR" ]; then
echo "Directory $JS_DIR not found."
exit 1
fi
if [ ! -w "$JAR_DIR" ]; then
JAR_DIR=$PWD
fi
if java -version >/dev/null 2>&1; then
:
else
echo "Java not found. Please ensure that the 'java' program is in your PATH."
exit 1
fi
if [ ! -r "$JAR_DIR/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 $JAR_DIR/."
exit 1
fi
(cd $JAR_DIR && unzip "/tmp/$$.zip" "compiler.jar")
rm -f "/tmp/$$.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
echo "Shrinking $JS_FILE"
minfile=`echo $JS_FILE | sed -e 's/\.js$/\.min\.js/'`
do_shrink "$JS_FILE" "$minfile" "$LANG_IN"
exit
fi
DIRS="$PWD/../program/js $PWD/../skins/* $PWD/../plugins/* $PWD/../plugins/*/skins/*"
# default: compress application scripts
for dir in $DIRS; do
for file in $dir/*.js; do
echo "$file" | grep -e '.min.js$' >/dev/null
if [ $? -eq 0 ]; then
continue
fi
if [ ! -f "$file" ]; then
continue
fi
echo "Shrinking $file"
minfile=`echo $file | sed -e 's/\.js$/\.min\.js/'`
do_shrink "$file" "$minfile" "$LANG_IN"
done
done
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