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/**
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* Back 2 Browser Bytecode Translator
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* Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. Look for COPYING file in the top folder.
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* If not, see http://opensource.org/licenses/GPL-2.0.
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*/
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package org.apidesign.bck2brwsr.launcher;
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import java.awt.Desktop;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InterruptedIOException;
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import java.io.OutputStream;
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import java.io.Writer;
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import java.net.URI;
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import java.net.URISyntaxException;
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import java.net.URL;
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import java.util.ArrayList;
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import java.util.Enumeration;
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import java.util.LinkedHashSet;
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import java.util.List;
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import java.util.Set;
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import java.util.concurrent.CountDownLatch;
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import java.util.concurrent.TimeUnit;
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import javax.script.Invocable;
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import javax.script.ScriptEngine;
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import javax.script.ScriptEngineManager;
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import javax.script.ScriptException;
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import static org.apidesign.bck2brwsr.launcher.Bck2BrwsrLauncher.copyStream;
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import org.apidesign.vm4brwsr.Bck2Brwsr;
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import org.glassfish.grizzly.PortRange;
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import org.glassfish.grizzly.http.server.HttpHandler;
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import org.glassfish.grizzly.http.server.HttpServer;
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import org.glassfish.grizzly.http.server.NetworkListener;
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import org.glassfish.grizzly.http.server.Request;
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import org.glassfish.grizzly.http.server.Response;
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import org.glassfish.grizzly.http.server.ServerConfiguration;
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/**
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* Lightweight server to launch Bck2Brwsr applications and tests.
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* Supports execution in native browser as well as Java's internal
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* execution engine.
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*/
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public class Bck2BrwsrLauncher {
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private Set<ClassLoader> loaders = new LinkedHashSet<>();
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private List<MethodInvocation> methods = new ArrayList<>();
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private long timeOut;
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private String sen;
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private String showURL;
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private final Res resources = new Res();
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public MethodInvocation addMethod(Class<?> clazz, String method) {
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loaders.add(clazz.getClassLoader());
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MethodInvocation c = new MethodInvocation(clazz.getName(), method);
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methods.add(c);
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return c;
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}
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public void setTimeout(long ms) {
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timeOut = ms;
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}
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public void setScriptEngineName(String sen) {
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this.sen = sen;
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}
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public void setStartPage(String startpage) {
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if (!startpage.startsWith("/")) {
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startpage = "/" + startpage;
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}
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this.showURL = startpage;
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}
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public void addClassLoader(ClassLoader url) {
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this.loaders.add(url);
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}
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public static void main( String[] args ) throws Exception {
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Bck2BrwsrLauncher l = new Bck2BrwsrLauncher();
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l.setStartPage("org/apidesign/bck2brwsr/launcher/console.xhtml");
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l.addClassLoader(Bck2BrwsrLauncher.class.getClassLoader());
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l.execute();
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System.in.read();
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}
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public void execute() throws IOException {
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try {
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if (sen != null) {
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executeRhino();
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} else if (showURL != null) {
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HttpServer server = initServer();
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server.getServerConfiguration().addHttpHandler(new Page(resources, null), "/");
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launchServerAndBrwsr(server, showURL);
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} else {
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executeInBrowser();
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}
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} catch (InterruptedException ex) {
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final InterruptedIOException iio = new InterruptedIOException(ex.getMessage());
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iio.initCause(ex);
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throw iio;
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} catch (Exception ex) {
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if (ex instanceof IOException) {
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throw (IOException)ex;
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}
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if (ex instanceof RuntimeException) {
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throw (RuntimeException)ex;
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}
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throw new IOException(ex);
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}
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}
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private void executeRhino() throws IOException, ScriptException, NoSuchMethodException {
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StringBuilder sb = new StringBuilder();
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Bck2Brwsr.generate(sb, new Res());
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ScriptEngineManager sem = new ScriptEngineManager();
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ScriptEngine mach = sem.getEngineByExtension(sen);
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sb.append(
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"\nvar vm = bck2brwsr(org.apidesign.bck2brwsr.vmtest.VMTest.read);"
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+ "\nfunction initVM() { return vm; };"
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+ "\n");
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Object res = mach.eval(sb.toString());
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if (!(mach instanceof Invocable)) {
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throw new IOException("It is invocable object: " + res);
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}
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Invocable code = (Invocable) mach;
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Object vm = code.invokeFunction("initVM");
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Object console = code.invokeMethod(vm, "loadClass", Console.class.getName());
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final MethodInvocation[] cases = this.methods.toArray(new MethodInvocation[0]);
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for (MethodInvocation mi : cases) {
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mi.result = code.invokeMethod(console,
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"invoke__Ljava_lang_String_2Ljava_lang_String_2Ljava_lang_String_2",
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mi.className, mi.methodName
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).toString();
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}
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}
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private HttpServer initServer() {
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jaroslav@323
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HttpServer server = HttpServer.createSimpleServer(".", new PortRange(8080, 65535));
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jaroslav@357
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final ServerConfiguration conf = server.getServerConfiguration();
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conf.addHttpHandler(new Page(resources,
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"org/apidesign/bck2brwsr/launcher/console.xhtml",
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"org.apidesign.bck2brwsr.launcher.Console", "welcome", "false"
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), "/console");
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conf.addHttpHandler(new VM(resources), "/bck2brwsr.js");
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conf.addHttpHandler(new VMInit(), "/vm.js");
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conf.addHttpHandler(new Classes(resources), "/classes/");
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jaroslav@357
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return server;
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jaroslav@357
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}
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jaroslav@357
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private void executeInBrowser() throws InterruptedException, URISyntaxException, IOException {
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jaroslav@357
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final CountDownLatch wait = new CountDownLatch(1);
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jaroslav@357
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final MethodInvocation[] cases = this.methods.toArray(new MethodInvocation[0]);
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jaroslav@357
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jaroslav@357
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HttpServer server = initServer();
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jaroslav@357
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ServerConfiguration conf = server.getServerConfiguration();
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jaroslav@357
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conf.addHttpHandler(new Page(resources,
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jaroslav@357
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"org/apidesign/bck2brwsr/launcher/harness.xhtml"
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jaroslav@357
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), "/execute");
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jaroslav@332
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conf.addHttpHandler(new HttpHandler() {
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jaroslav@332
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int cnt;
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jaroslav@332
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@Override
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public void service(Request request, Response response) throws Exception {
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jaroslav@342
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String id = request.getParameter("request");
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jaroslav@342
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String value = request.getParameter("result");
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jaroslav@342
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if (id != null && value != null) {
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jaroslav@342
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value = value.replace("%20", " ");
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jaroslav@342
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cases[Integer.parseInt(id)].result = value;
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jaroslav@342
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}
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jaroslav@342
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jaroslav@342
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189 |
if (cnt >= cases.length) {
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jaroslav@342
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response.getWriter().write("");
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jaroslav@342
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191 |
wait.countDown();
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jaroslav@342
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192 |
cnt = 0;
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jaroslav@342
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return;
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jaroslav@342
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194 |
}
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jaroslav@342
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195 |
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jaroslav@332
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response.getWriter().write("{"
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jaroslav@342
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+ "className: '" + cases[cnt].className + "', "
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jaroslav@342
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+ "methodName: '" + cases[cnt].methodName + "', "
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jaroslav@332
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+ "request: " + cnt
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jaroslav@332
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+ "}");
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jaroslav@342
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cnt++;
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jaroslav@332
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}
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jaroslav@342
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}, "/data");
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jaroslav@357
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jaroslav@357
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launchServerAndBrwsr(server, "/execute");
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jaroslav@323
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jaroslav@349
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wait.await(timeOut, TimeUnit.MILLISECONDS);
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jaroslav@349
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server.stop();
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jaroslav@323
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209 |
}
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jaroslav@331
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jaroslav@342
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static void copyStream(InputStream is, OutputStream os, String baseURL, String... params) throws IOException {
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jaroslav@331
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212 |
for (;;) {
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jaroslav@331
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int ch = is.read();
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jaroslav@331
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214 |
if (ch == -1) {
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jaroslav@331
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break;
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jaroslav@331
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216 |
}
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jaroslav@331
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217 |
if (ch == '$') {
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jaroslav@331
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int cnt = is.read() - '0';
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jaroslav@342
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219 |
if (cnt == 'U' - '0') {
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jaroslav@342
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220 |
os.write(baseURL.getBytes());
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jaroslav@342
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221 |
}
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jaroslav@331
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222 |
if (cnt < params.length) {
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jaroslav@331
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223 |
os.write(params[cnt].getBytes());
|
jaroslav@331
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224 |
}
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jaroslav@331
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225 |
} else {
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jaroslav@331
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226 |
os.write(ch);
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jaroslav@331
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227 |
}
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jaroslav@331
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228 |
}
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jaroslav@331
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229 |
}
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jaroslav@356
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jaroslav@357
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231 |
private void launchServerAndBrwsr(HttpServer server, final String page) throws IOException, URISyntaxException, InterruptedException {
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jaroslav@357
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232 |
server.start();
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jaroslav@357
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233 |
NetworkListener listener = server.getListeners().iterator().next();
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jaroslav@357
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234 |
int port = listener.getPort();
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jaroslav@357
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235 |
|
jaroslav@357
|
236 |
URI uri = new URI("http://localhost:" + port + page);
|
jaroslav@357
|
237 |
try {
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jaroslav@357
|
238 |
Desktop.getDesktop().browse(uri);
|
jaroslav@357
|
239 |
} catch (UnsupportedOperationException ex) {
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jaroslav@357
|
240 |
String[] cmd = {
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jaroslav@357
|
241 |
"xdg-open", uri.toString()
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jaroslav@357
|
242 |
};
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jaroslav@357
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243 |
Runtime.getRuntime().exec(cmd).waitFor();
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jaroslav@357
|
244 |
}
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jaroslav@357
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245 |
System.err.println("Showing " + uri);
|
jaroslav@357
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246 |
}
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jaroslav@357
|
247 |
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jaroslav@348
|
248 |
private class Res implements Bck2Brwsr.Resources {
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jaroslav@348
|
249 |
@Override
|
jaroslav@348
|
250 |
public InputStream get(String resource) throws IOException {
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jaroslav@348
|
251 |
for (ClassLoader l : loaders) {
|
jaroslav@348
|
252 |
URL u = null;
|
jaroslav@348
|
253 |
Enumeration<URL> en = l.getResources(resource);
|
jaroslav@348
|
254 |
while (en.hasMoreElements()) {
|
jaroslav@348
|
255 |
u = en.nextElement();
|
jaroslav@348
|
256 |
}
|
jaroslav@348
|
257 |
if (u != null) {
|
jaroslav@348
|
258 |
return u.openStream();
|
jaroslav@348
|
259 |
}
|
jaroslav@348
|
260 |
}
|
jaroslav@348
|
261 |
throw new IOException("Can't find " + resource);
|
jaroslav@348
|
262 |
}
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jaroslav@348
|
263 |
}
|
jaroslav@330
|
264 |
|
jaroslav@332
|
265 |
private static class Page extends HttpHandler {
|
jaroslav@332
|
266 |
private final String resource;
|
jaroslav@331
|
267 |
private final String[] args;
|
jaroslav@357
|
268 |
private final Res res;
|
jaroslav@331
|
269 |
|
jaroslav@357
|
270 |
public Page(Res res, String resource, String... args) {
|
jaroslav@357
|
271 |
this.res = res;
|
jaroslav@332
|
272 |
this.resource = resource;
|
jaroslav@331
|
273 |
this.args = args;
|
jaroslav@330
|
274 |
}
|
jaroslav@330
|
275 |
|
jaroslav@330
|
276 |
@Override
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jaroslav@330
|
277 |
public void service(Request request, Response response) throws Exception {
|
jaroslav@357
|
278 |
String r = resource;
|
jaroslav@357
|
279 |
if (r == null) {
|
jaroslav@357
|
280 |
r = request.getHttpHandlerPath();
|
jaroslav@357
|
281 |
if (r.startsWith("/")) {
|
jaroslav@357
|
282 |
r = r.substring(1);
|
jaroslav@357
|
283 |
}
|
jaroslav@357
|
284 |
}
|
jaroslav@357
|
285 |
if (r.endsWith(".html") || r.endsWith(".xhtml")) {
|
jaroslav@357
|
286 |
response.setContentType("text/html");
|
jaroslav@357
|
287 |
}
|
jaroslav@330
|
288 |
OutputStream os = response.getOutputStream();
|
jaroslav@357
|
289 |
try (InputStream is = res.get(r)) {
|
jaroslav@357
|
290 |
copyStream(is, os, request.getRequestURL().toString(), args);
|
jaroslav@357
|
291 |
} catch (IOException ex) {
|
jaroslav@357
|
292 |
response.setDetailMessage(ex.getLocalizedMessage());
|
jaroslav@357
|
293 |
response.setError();
|
jaroslav@357
|
294 |
response.setStatus(404);
|
jaroslav@357
|
295 |
}
|
jaroslav@330
|
296 |
}
|
jaroslav@330
|
297 |
}
|
jaroslav@330
|
298 |
|
jaroslav@330
|
299 |
private static class VM extends HttpHandler {
|
jaroslav@348
|
300 |
private final Res loader;
|
jaroslav@330
|
301 |
|
jaroslav@348
|
302 |
public VM(Res loader) {
|
jaroslav@330
|
303 |
this.loader = loader;
|
jaroslav@330
|
304 |
}
|
jaroslav@330
|
305 |
|
jaroslav@330
|
306 |
@Override
|
jaroslav@330
|
307 |
public void service(Request request, Response response) throws Exception {
|
jaroslav@330
|
308 |
response.setCharacterEncoding("UTF-8");
|
jaroslav@330
|
309 |
response.setContentType("text/javascript");
|
jaroslav@330
|
310 |
Bck2Brwsr.generate(response.getWriter(), loader);
|
jaroslav@330
|
311 |
}
|
jaroslav@330
|
312 |
}
|
jaroslav@332
|
313 |
private static class VMInit extends HttpHandler {
|
jaroslav@332
|
314 |
public VMInit() {
|
jaroslav@332
|
315 |
}
|
jaroslav@332
|
316 |
|
jaroslav@332
|
317 |
@Override
|
jaroslav@332
|
318 |
public void service(Request request, Response response) throws Exception {
|
jaroslav@332
|
319 |
response.setCharacterEncoding("UTF-8");
|
jaroslav@332
|
320 |
response.setContentType("text/javascript");
|
jaroslav@332
|
321 |
response.getWriter().append(
|
jaroslav@332
|
322 |
"function ldCls(res) {\n"
|
jaroslav@332
|
323 |
+ " var request = new XMLHttpRequest();\n"
|
jaroslav@357
|
324 |
+ " request.open('GET', '/classes/' + res, false);\n"
|
jaroslav@332
|
325 |
+ " request.send();\n"
|
jaroslav@332
|
326 |
+ " var arr = eval('(' + request.responseText + ')');\n"
|
jaroslav@332
|
327 |
+ " return arr;\n"
|
jaroslav@332
|
328 |
+ "}\n"
|
jaroslav@332
|
329 |
+ "var vm = new bck2brwsr(ldCls);\n");
|
jaroslav@332
|
330 |
}
|
jaroslav@332
|
331 |
}
|
jaroslav@330
|
332 |
|
jaroslav@330
|
333 |
private static class Classes extends HttpHandler {
|
jaroslav@348
|
334 |
private final Res loader;
|
jaroslav@330
|
335 |
|
jaroslav@348
|
336 |
public Classes(Res loader) {
|
jaroslav@330
|
337 |
this.loader = loader;
|
jaroslav@330
|
338 |
}
|
jaroslav@330
|
339 |
|
jaroslav@330
|
340 |
@Override
|
jaroslav@330
|
341 |
public void service(Request request, Response response) throws Exception {
|
jaroslav@330
|
342 |
String res = request.getHttpHandlerPath();
|
jaroslav@330
|
343 |
if (res.startsWith("/")) {
|
jaroslav@330
|
344 |
res = res.substring(1);
|
jaroslav@330
|
345 |
}
|
jaroslav@348
|
346 |
try (InputStream is = loader.get(res)) {
|
jaroslav@348
|
347 |
response.setContentType("text/javascript");
|
jaroslav@348
|
348 |
Writer w = response.getWriter();
|
jaroslav@348
|
349 |
w.append("[");
|
jaroslav@348
|
350 |
for (int i = 0;; i++) {
|
jaroslav@348
|
351 |
int b = is.read();
|
jaroslav@348
|
352 |
if (b == -1) {
|
jaroslav@348
|
353 |
break;
|
jaroslav@348
|
354 |
}
|
jaroslav@348
|
355 |
if (i > 0) {
|
jaroslav@348
|
356 |
w.append(", ");
|
jaroslav@348
|
357 |
}
|
jaroslav@348
|
358 |
if (i % 20 == 0) {
|
jaroslav@348
|
359 |
w.write("\n");
|
jaroslav@348
|
360 |
}
|
jaroslav@348
|
361 |
if (b > 127) {
|
jaroslav@348
|
362 |
b = b - 256;
|
jaroslav@348
|
363 |
}
|
jaroslav@348
|
364 |
w.append(Integer.toString(b));
|
jaroslav@348
|
365 |
}
|
jaroslav@348
|
366 |
w.append("\n]");
|
jaroslav@348
|
367 |
} catch (IOException ex) {
|
jaroslav@348
|
368 |
response.setError();
|
jaroslav@348
|
369 |
response.setDetailMessage(ex.getMessage());
|
jaroslav@330
|
370 |
}
|
jaroslav@330
|
371 |
}
|
jaroslav@330
|
372 |
}
|
jaroslav@342
|
373 |
|
jaroslav@348
|
374 |
public static final class MethodInvocation {
|
jaroslav@342
|
375 |
final String className;
|
jaroslav@342
|
376 |
final String methodName;
|
jaroslav@342
|
377 |
String result;
|
jaroslav@342
|
378 |
|
jaroslav@348
|
379 |
MethodInvocation(String className, String methodName) {
|
jaroslav@342
|
380 |
this.className = className;
|
jaroslav@342
|
381 |
this.methodName = methodName;
|
jaroslav@342
|
382 |
}
|
jaroslav@348
|
383 |
|
jaroslav@348
|
384 |
@Override
|
jaroslav@348
|
385 |
public String toString() {
|
jaroslav@348
|
386 |
return result;
|
jaroslav@348
|
387 |
}
|
jaroslav@342
|
388 |
}
|
jaroslav@323
|
389 |
}
|