jaroslav@106: /**
jaroslav@106:  * Back 2 Browser Bytecode Translator
jaroslav@106:  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
jaroslav@106:  *
jaroslav@106:  * This program is free software: you can redistribute it and/or modify
jaroslav@106:  * it under the terms of the GNU General Public License as published by
jaroslav@106:  * the Free Software Foundation, version 2 of the License.
jaroslav@106:  *
jaroslav@106:  * This program is distributed in the hope that it will be useful,
jaroslav@106:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
jaroslav@106:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
jaroslav@106:  * GNU General Public License for more details.
jaroslav@106:  *
jaroslav@106:  * You should have received a copy of the GNU General Public License
jaroslav@106:  * along with this program. Look for COPYING file in the top folder.
jaroslav@106:  * If not, see http://opensource.org/licenses/GPL-2.0.
jaroslav@106:  */
jaroslav@29: package org.apidesign.vm4brwsr;
jaroslav@29: 
jaroslav@29: import java.io.BufferedWriter;
jaroslav@1058: import java.io.File;
jaroslav@29: import java.io.FileWriter;
jaroslav@29: import java.io.IOException;
jaroslav@29: import java.io.Writer;
jaroslav@29: 
jaroslav@136: /** Generator of JavaScript from bytecode of classes on classpath of the VM
jaroslav@136:  * with a Main method.
jaroslav@29:  *
jaroslav@29:  * @author Jaroslav Tulach <jtulach@netbeans.org>
jaroslav@29:  */
jaroslav@136: final class Main {
jaroslav@136:     private Main() {}
jaroslav@29:     
jaroslav@29:     public static void main(String... args) throws IOException {
jaroslav@881:         final String obfuscate = "--obfuscatelevel";
jaroslav@881:         
jaroslav@29:         if (args.length < 2) {
jaroslav@298:             System.err.println("Bck2Brwsr Translator from Java(tm) to JavaScript, (c) Jaroslav Tulach 2012");
jaroslav@881:             System.err.println("Usage: java -cp ... -jar ... [");
jaroslav@881:             System.err.print(obfuscate);
jaroslav@881:             System.err.print(" [");
jaroslav@881:             boolean first = true;
jaroslav@881:             for (ObfuscationLevel l : ObfuscationLevel.values()) {
jaroslav@881:                 if (!first) {
jaroslav@881:                     System.err.print('|');
jaroslav@881:                 }
jaroslav@881:                 System.err.print(l.name());
jaroslav@881:                 first = false;
jaroslav@881:             }
jaroslav@881:                 
jaroslav@881:             System.err.println("] <file_to_generate_js_code_to> java/lang/Class org/your/App ...");
jaroslav@881:             System.exit(9);
jaroslav@29:         }
jaroslav@29:         
jaroslav@881:         ObfuscationLevel obfLevel = ObfuscationLevel.NONE;
jaroslav@881:         StringArray classes = new StringArray();
jaroslav@881:         String generateTo = null;
jaroslav@881:         for (int i = 0; i < args.length; i++) {
jaroslav@881:             if (obfuscate.equals(args[i])) { // NOI18N
jaroslav@881:                 i++;
jaroslav@881:                 try {
jaroslav@881:                     obfLevel = ObfuscationLevel.valueOf(args[i]);
jaroslav@881:                 } catch (Exception e) {
jaroslav@881:                     System.err.print(obfuscate);
jaroslav@881:                     System.err.print(" parameter needs to be followed by one of ");
jaroslav@881:                     boolean first = true;
jaroslav@881:                     for (ObfuscationLevel l : ObfuscationLevel.values()) {
jaroslav@881:                         if (!first) {
jaroslav@881:                             System.err.print(", ");
jaroslav@881:                         }
jaroslav@881:                         System.err.print(l.name());
jaroslav@881:                         first = false;
jaroslav@881:                     }
jaroslav@881:                     System.err.println();
jaroslav@881:                     System.exit(1);
jaroslav@881:                 }
jaroslav@881:                 continue;
jaroslav@881:             }
jaroslav@881:             if (generateTo == null) {
jaroslav@881:                 generateTo = args[i];
jaroslav@881:             } else {
jaroslav@881:                 classes = classes.addAndNew(args[i]);
jaroslav@881:             }
jaroslav@881:         }
jaroslav@1058:         
jaroslav@1058:         File gt = new File(generateTo);
jaroslav@1058:         if (Boolean.getBoolean("skip.if.exists") && gt.isFile()) {
jaroslav@1058:             System.err.println("Skipping as " + gt + " exists.");
jaroslav@1058:             System.exit(0);
jaroslav@1058:         }
jaroslav@1058:         
jaroslav@1058:         try (Writer w = new BufferedWriter(new FileWriter(gt))) {
jaroslav@881:             Bck2Brwsr.newCompiler().
jaroslav@881:                 obfuscation(obfLevel).
jaroslav@881:                 addRootClasses(classes.toArray()).
jaroslav@881:                 resources(Main.class.getClassLoader()).
jaroslav@881:                 generate(w);
lubomir@281:         }
jaroslav@29:     }
jaroslav@29: }