launcher/http/src/main/java/org/apidesign/bck2brwsr/launcher/Bck2BrwsrLauncher.java
2 * Back 2 Browser Bytecode Translator
3 * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, version 2 of the License.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. Look for COPYING file in the top folder.
16 * If not, see http://opensource.org/licenses/GPL-2.0.
18 package org.apidesign.bck2brwsr.launcher;
21 import java.io.FileReader;
22 import java.io.IOException;
23 import java.io.InputStream;
24 import java.io.InputStreamReader;
25 import java.io.Reader;
26 import java.net.MalformedURLException;
28 import java.util.HashSet;
30 import java.util.jar.JarFile;
31 import java.util.logging.Level;
34 * Lightweight server to launch Bck2Brwsr applications and tests.
35 * Supports execution in native browser as well as Java's internal
38 final class Bck2BrwsrLauncher extends BaseHTTPLauncher {
39 private Set<String> testClasses = new HashSet<String>();
41 public Bck2BrwsrLauncher(String cmd) {
46 String harnessResource() {
47 return "org/apidesign/bck2brwsr/launcher/harness.xhtml";
51 String compileJar(JarFile jar) throws IOException {
52 return CompileCP.compileJAR(jar, testClasses);
56 public InvocationContext createInvocation(Class<?> clazz, String method) {
57 testClasses.add(clazz.getName().replace('.', '/'));
58 return super.createInvocation(clazz, method);
61 @Override String compileFromClassPath(URL f, Res loader) throws IOException {
62 return CompileCP.compileFromClassPath(f, loader);
66 void generateBck2BrwsrJS(StringBuilder sb, final Res loader) throws IOException {
67 String b2b = System.getProperty("bck2brwsr.js");
69 LOG.log(Level.INFO, "Serving bck2brwsr.js from {0}", b2b);
73 } catch (MalformedURLException ex) {
74 File f = new File(b2b);
76 bu = f.toURI().toURL();
81 try (Reader r = new InputStreamReader(bu.openStream())) {
82 char[] arr = new char[4096];
84 int len = r.read(arr);
88 sb.append(arr, 0, len);
92 LOG.log(Level.INFO, "Generating bck2brwsr.js from scratch", b2b);
93 CompileCP.compileVM(sb, loader);
96 "(function WrapperVM(global) {\n"
97 + " var cache = {};\n"
98 + " var empty = {};\n"
99 + " function ldCls(res, skip) {\n"
100 + " var c = cache[res];\n"
102 + " if (c[skip] === empty) return null;\n"
103 + " if (c[skip]) return c[skip];\n"
105 + " cache[res] = c = new Array();\n"
107 + " var request = new XMLHttpRequest();\n"
108 + " request.open('GET', '/classes/' + res + '?skip=' + skip, false);\n"
109 + " request.send();\n"
110 + " if (request.status !== 200) {\n"
111 + " c[skip] = null;\n"
114 + " var arr = eval(request.responseText);\n"
115 + " if (arr === null) arr = empty;\n"
116 + " c[skip] = arr;\n"
119 + " var prevvm = global.bck2brwsr;\n"
120 + " global.bck2brwsr = function() {\n"
121 + " var args = Array.prototype.slice.apply(arguments);\n"
122 + " args.unshift(ldCls);\n"
123 + " return prevvm.apply(null, args);\n"
125 + " global.bck2brwsr.registerExtension = prevvm.registerExtension;\n"
128 LOG.log(Level.INFO, "Serving bck2brwsr.js", b2b);