launcher/http/src/main/java/org/apidesign/bck2brwsr/launcher/Bck2BrwsrLauncher.java
Introducing vmtest.precompiled=<regexp> to verify that bck2brwsr generated resources are really used
2 * Back 2 Browser Bytecode Translator
3 * Copyright (C) 2012-2015 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.IOException;
22 import java.io.InputStreamReader;
23 import java.io.Reader;
24 import java.net.MalformedURLException;
25 import java.net.URISyntaxException;
27 import java.util.HashSet;
29 import java.util.logging.Level;
30 import java.util.regex.Pattern;
33 * Lightweight server to launch Bck2Brwsr applications and tests.
34 * Supports execution in native browser as well as Java's internal
37 final class Bck2BrwsrLauncher extends BaseHTTPLauncher {
38 private Set<String> testClasses = new HashSet<String>();
40 public Bck2BrwsrLauncher(String cmd) {
45 String harnessResource() {
46 return "org/apidesign/bck2brwsr/launcher/harness.xhtml";
50 Object compileJar(URL jar, URL precompiled) throws IOException {
51 if (precompiled != null) {
52 LOG.log(Level.INFO, "Found precompiled JAR version of {0} at {1}. Using.", new Object[]{jar, precompiled});
53 return precompiled.openStream();
57 f = new File(jar.toURI());
58 } catch (URISyntaxException ex) {
59 throw new IOException(ex);
61 final String precompile = System.getProperty("vmtest.precompiled");
62 if (precompile != null && Pattern.compile(precompile).matcher(jar.toString()).find()) {
63 throw new IOException("Compilation of " + jar + " forbidden");
65 LOG.log(Level.INFO, "No precompiled version for {0} found. Compiling.", jar);
66 return CompileCP.compileJAR(f, testClasses);
70 public InvocationContext createInvocation(Class<?> clazz, String method) {
71 testClasses.add(clazz.getName().replace('.', '/'));
72 return super.createInvocation(clazz, method);
75 @Override String compileFromClassPath(URL f, Res loader) throws IOException {
76 return CompileCP.compileFromClassPath(f, loader);
80 void generateBck2BrwsrJS(StringBuilder sb, final Res loader) throws IOException {
81 String b2b = System.getProperty("bck2brwsr.js");
83 LOG.log(Level.INFO, "Serving bck2brwsr.js from {0}", b2b);
87 } catch (MalformedURLException ex) {
88 File f = new File(b2b);
90 bu = f.toURI().toURL();
95 try (Reader r = new InputStreamReader(bu.openStream())) {
96 char[] arr = new char[4096];
98 int len = r.read(arr);
102 sb.append(arr, 0, len);
106 LOG.log(Level.INFO, "Generating bck2brwsr.js from scratch", b2b);
107 CompileCP.compileVM(sb, loader);
110 "(function WrapperVM(global) {\n"
111 + " var cache = {};\n"
112 + " var empty = {};\n"
113 + " function ldCls(res, skip) {\n"
114 + " var c = cache[res];\n"
116 + " if (c[skip] === empty) return null;\n"
117 + " if (c[skip]) return c[skip];\n"
119 + " cache[res] = c = new Array();\n"
121 + " var request = new XMLHttpRequest();\n"
122 + " request.open('GET', '/classes/' + res + '?skip=' + skip, false);\n"
123 + " request.send();\n"
124 + " if (request.status !== 200) {\n"
125 + " c[skip] = null;\n"
128 + " var arr = eval(request.responseText);\n"
129 + " if (arr === null) c[skip] = empty;\n"
130 + " else c[skip] = arr;\n"
133 + " var prevvm = global.bck2brwsr;\n"
134 + " global.bck2brwsr = function() {\n"
135 + " var args = Array.prototype.slice.apply(arguments);\n"
136 + " args.unshift(ldCls);\n"
137 + " return prevvm.apply(null, args);\n"
139 + " global.bck2brwsr.register = prevvm.register;\n"
142 LOG.log(Level.INFO, "Serving bck2brwsr.js", b2b);