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/* * Copyright 2009 The Closure Compiler Authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ // // Contents // The Closure Compiler performs checking, instrumentation, and optimizations on JavaScript code. The purpose of this README is to explain how to build and run the Closure Compiler. The Closure Compiler requires Java 6 or higher. http://www.java.com/ // // Building The Closure Compiler // There are three ways to get a Closure Compiler executable. 1) Use one we built for you. Pre-built Closure binaries can be found at http://code.google.com/p/closure-compiler/downloads/list 2) Check out the source and build it with Apache Ant. First, check out the full source tree of the Closure Compiler. There are instructions on how to do this at the project site. http://code.google.com/p/closure-compiler/source/checkout Apache Ant is a cross-platform build tool. http://ant.apache.org/ At the root of the source tree, there is an Ant file named build.xml. To use it, navigate to the same directory and type the command ant jar This will produce a jar file called "build/compiler.jar". 3) Check out the source and build it with Eclipse. Eclipse is a cross-platform IDE. http://www.eclipse.org/ Under Eclipse's File menu, click "New > Project ..." and create a "Java Project." You will see an options screen. Give the project a name, select "Create project from existing source," and choose the root of the checked-out source tree as the existing directory. Verify that you are using JRE version 6 or higher. Eclipse can use the build.xml file to discover rules. When you navigate to the build.xml file, you will see all the build rules in the "Outline" pane. Run the "jar" rule to build the compiler in build/compiler.jar. // // Running The Closure Compiler // Once you have the jar binary, running the Closure Compiler is straightforward. On the command line, type java -jar compiler.jar This starts the compiler in interactive mode. Type var x = 17 + 25; then hit "Enter", then hit "Ctrl-Z" (on Windows) or "Ctrl-D" (on Mac or Linux) and "Enter" again. The Compiler will respond: var x=42; The Closure Compiler has many options for reading input from a file, writing output to a file, checking your code, and running optimizations. To learn more, type java -jar compiler.jar --help You can read more detailed documentation about the many flags at http://code.google.com/closure/compiler/docs/gettingstarted_app.html // // Compiling Multiple Scripts // If you have multiple scripts, you should compile them all together with one compile command. java -jar compiler.jar --js=in1.js --js=in2.js ... --js_output_file=out.js The Closure Compiler will concatenate the files in the order they're passed at the command line. If you need to compile many, many scripts together, you may start to run into problems with managing dependencies between scripts. You should check out the Closure Library. It contains functions for enforcing dependencies between scripts, and a tool called calcdeps.py that knows how to give scripts to the Closure Compiler in the right order. http://code.google.com/p/closure-library/ // // Licensing // Unless otherwise stated, all source files are licensed under the Apache License, Version 2.0. ----- Code under: src/com/google/javascript/rhino test/com/google/javascript/rhino URL: http://www.mozilla.org/rhino Version: 1.5R3, with heavy modifications License: Netscape Public License and MPL / GPL dual license Description: A partial copy of Mozilla Rhino. Mozilla Rhino is an implementation of JavaScript for the JVM. The JavaScript parser and the parse tree data structures were extracted and modified significantly for use by Google's JavaScript compiler. Local Modifications: The packages have been renamespaced. All code not relevant to parsing has been removed. A JsDoc parser and static typing system have been added. ----- Code in: lib/rhino Rhino URL: http://www.mozilla.org/rhino Version: Trunk License: Netscape Public License and MPL / GPL dual license Description: Mozilla Rhino is an implementation of JavaScript for the JVM. Local Modifications: Minor changes to parsing JSDoc that usually get pushed up-stream to Rhino trunk. ----- Code in: lib/args4j.jar Args4j URL: https://args4j.dev.java.net/ Version: 2.0.16 License: MIT Description: args4j is a small Java class library that makes it easy to parse command line options/arguments in your CUI application. Local Modifications: None. ----- Code in: lib/guava.jar Guava Libraries URL: http://code.google.com/p/guava-libraries/ Version: 15.0 License: Apache License 2.0 Description: Google's core Java libraries. Local Modifications: None. ----- Code in: lib/jsr305.jar Annotations for software defect detection URL: http://code.google.com/p/jsr-305/ Version: svn revision 47 License: BSD License Description: Annotations for software defect detection. Local Modifications: None. ----- Code in: lib/jarjar.jar Jar Jar Links URL: http://jarjar.googlecode.com/ Version: 1.1 License: Apache License 2.0 Description: A utility for repackaging Java libraries. Local Modifications: None. ---- Code in: lib/junit.jar JUnit URL: http://sourceforge.net/projects/junit/ Version: 4.10 License: Common Public License 1.0 Description: A framework for writing and running automated tests in Java. Local Modifications: None. --- Code in: lib/protobuf-java.jar Protocol Buffers URL: http://code.google.com/p/protobuf/ Version: 2.4.1 License: New BSD License Description: Supporting libraries for protocol buffers, an encoding of structured data. Local Modifications: None --- Code in: lib/ant.jar lib/ant-launcher.jar URL: http://ant.apache.org/bindownload.cgi Version: 1.8.1 License: Apache License 2.0 Description: Ant is a Java based build tool. In theory it is kind of like "make" without make's wrinkles and with the full portability of pure java code. Local Modifications: None --- Code in: lib/json.jar URL: http://json.org/java/index.html Version: JSON version 20090211 License: MIT license Description: JSON is a set of java files for use in transmitting data in JSON format. Local Modifications: None --- Code in: tools/maven-ant-tasks-2.1.3.jar URL: http://maven.apache.org Version 2.1.3 License: Apache License 2.0 Description: Maven Ant tasks are used to manage dependencies and to install/deploy to maven repositories. Local Modifications: None