launcher/http/src/main/java/org/apidesign/bck2brwsr/launcher/Bck2BrwsrLauncher.java
If j2js task is used, read the generated bck2brwsr.js in rather than compiling new one during execution
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;
27 import java.util.logging.Level;
28 import org.apidesign.vm4brwsr.Bck2Brwsr;
31 * Lightweight server to launch Bck2Brwsr applications and tests.
32 * Supports execution in native browser as well as Java's internal
35 final class Bck2BrwsrLauncher extends BaseHTTPLauncher {
37 public Bck2BrwsrLauncher(String cmd) {
42 String harnessResource() {
43 return "org/apidesign/bck2brwsr/launcher/harness.xhtml";
47 void generateBck2BrwsrJS(StringBuilder sb, final Res loader) throws IOException {
48 class R implements Bck2Brwsr.Resources {
50 public InputStream get(String resource) throws IOException {
51 return loader.get(resource);
54 String b2b = System.getProperty("bck2brwsr.js");
56 LOG.log(Level.INFO, "Serving bck2brwsr.js from {0}", b2b);
57 try (Reader r = new InputStreamReader(new URL(b2b).openStream())) {
58 char[] arr = new char[4096];
60 int len = r.read(arr);
64 sb.append(arr, 0, len);
68 LOG.log(Level.INFO, "Generating bck2brwsr.js from scratch", b2b);
69 Bck2Brwsr.generate(sb, new R());
72 "(function WrapperVM(global) {"
73 + " function ldCls(res) {\n"
74 + " var request = new XMLHttpRequest();\n"
75 + " request.open('GET', '/classes/' + res, false);\n"
76 + " request.send();\n"
77 + " if (request.status !== 200) return null;\n"
78 + " var arr = eval('(' + request.responseText + ')');\n"
81 + " var prevvm = global.bck2brwsr;\n"
82 + " global.bck2brwsr = function() {\n"
83 + " var args = Array.prototype.slice.apply(arguments);\n"
84 + " args.unshift(ldCls);\n"
85 + " return prevvm.apply(null, args);\n"
89 LOG.log(Level.INFO, "Serving bck2brwsr.js", b2b);