jaroslav@323: /**
jaroslav@323:  * Back 2 Browser Bytecode Translator
jaroslav@323:  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
jaroslav@323:  *
jaroslav@323:  * This program is free software: you can redistribute it and/or modify
jaroslav@323:  * it under the terms of the GNU General Public License as published by
jaroslav@323:  * the Free Software Foundation, version 2 of the License.
jaroslav@323:  *
jaroslav@323:  * This program is distributed in the hope that it will be useful,
jaroslav@323:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
jaroslav@323:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
jaroslav@323:  * GNU General Public License for more details.
jaroslav@323:  *
jaroslav@323:  * You should have received a copy of the GNU General Public License
jaroslav@323:  * along with this program. Look for COPYING file in the top folder.
jaroslav@323:  * If not, see http://opensource.org/licenses/GPL-2.0.
jaroslav@323:  */
jaroslav@323: package org.apidesign.bck2brwsr.launcher;
jaroslav@323: 
jaroslav@323: import java.awt.Desktop;
jaroslav@331: import java.io.IOException;
jaroslav@323: import java.io.InputStream;
jaroslav@323: import java.io.OutputStream;
jaroslav@323: import java.io.Writer;
jaroslav@323: import java.net.URI;
jaroslav@323: import java.net.URL;
jaroslav@323: import java.util.Enumeration;
jaroslav@331: import static org.apidesign.bck2brwsr.launcher.Bck2BrwsrLauncher.copyStream;
jaroslav@323: import org.apidesign.vm4brwsr.Bck2Brwsr;
jaroslav@323: import org.glassfish.grizzly.PortRange;
jaroslav@323: import org.glassfish.grizzly.http.server.HttpHandler;
jaroslav@323: import org.glassfish.grizzly.http.server.HttpServer;
jaroslav@323: import org.glassfish.grizzly.http.server.NetworkListener;
jaroslav@323: import org.glassfish.grizzly.http.server.Request;
jaroslav@323: import org.glassfish.grizzly.http.server.Response;
jaroslav@323: import org.glassfish.grizzly.http.server.ServerConfiguration;
jaroslav@323: 
jaroslav@323: /**
jaroslav@323:  * Lightweight server to launch Bck2Brwsr applications in real browser.
jaroslav@323:  */
jaroslav@323: public class Bck2BrwsrLauncher {
jaroslav@323:     public static void main( String[] args ) throws Exception {
jaroslav@323:         HttpServer server = HttpServer.createSimpleServer(".", new PortRange(8080, 65535));
jaroslav@323:         final ClassLoader loader = Bck2BrwsrLauncher.class.getClassLoader();
jaroslav@323:         
jaroslav@323:         final ServerConfiguration conf = server.getServerConfiguration();
jaroslav@331:         conf.addHttpHandler(new Console("org.apidesign.bck2brwsr.launcher.Console", "welcome", "false"), "/console");
jaroslav@330:         conf.addHttpHandler(new VM(loader), "/bck2brwsr.js");
jaroslav@330:         conf.addHttpHandler(new Classes(loader), "/classes/");
jaroslav@331:         conf.addHttpHandler(new HttpHandler() {
jaroslav@331:             @Override
jaroslav@331:             public void service(Request request, Response response) throws Exception {
jaroslav@331:                 String clazz = request.getParameter("class");
jaroslav@331:                 String method = request.getParameter("method");
jaroslav@331:                 if (clazz == null || method == null) {
jaroslav@331:                     response.setError();
jaroslav@331:                     response.setDetailMessage("Need two parameters: class and method name!");
jaroslav@331:                     return;
jaroslav@331:                 }
jaroslav@331:                 response.setContentType("text/html");
jaroslav@331:                 OutputStream os = response.getOutputStream();
jaroslav@331:                 InputStream is = Bck2BrwsrLauncher.class.getResourceAsStream("console.xhtml");
jaroslav@331:                 copyStream(is, os, clazz, method, "true");
jaroslav@331:             }
jaroslav@331:         }, "/execute");
jaroslav@323:         
jaroslav@323:         server.start();
jaroslav@323:         NetworkListener listener = server.getListeners().iterator().next();
jaroslav@323:         int port = listener.getPort();
jaroslav@323:         
jaroslav@331:         URI uri = new URI("http://localhost:" + port + "/execute?class=org.apidesign.bck2brwsr.launcher.Console&method=welcome");
jaroslav@323:         try {
jaroslav@323:             Desktop.getDesktop().browse(uri);
jaroslav@323:         } catch (UnsupportedOperationException ex) {
jaroslav@323:             String[] cmd = { 
jaroslav@323:                 "xdg-open", uri.toString()
jaroslav@323:             };
jaroslav@323:             Runtime.getRuntime().exec(cmd).waitFor();
jaroslav@323:         }
jaroslav@323:         
jaroslav@323:         System.in.read();
jaroslav@323:     }
jaroslav@331:     
jaroslav@331:     static void copyStream(InputStream is, OutputStream os, String... params) throws IOException {
jaroslav@331:         for (;;) {
jaroslav@331:             int ch = is.read();
jaroslav@331:             if (ch == -1) {
jaroslav@331:                 break;
jaroslav@331:             }
jaroslav@331:             if (ch == '$') {
jaroslav@331:                 int cnt = is.read() - '0';
jaroslav@331:                 if (cnt < params.length) {
jaroslav@331:                     os.write(params[cnt].getBytes());
jaroslav@331:                 }
jaroslav@331:             } else {
jaroslav@331:                 os.write(ch);
jaroslav@331:             }
jaroslav@331:         }
jaroslav@331:     }
jaroslav@330: 
jaroslav@330:     private static class Console extends HttpHandler {
jaroslav@331:         private final String[] args;
jaroslav@331:         
jaroslav@331:         public Console(String... args) {
jaroslav@331:             this.args = args;
jaroslav@330:         }
jaroslav@330: 
jaroslav@330:         @Override
jaroslav@330:         public void service(Request request, Response response) throws Exception {
jaroslav@330:             response.setContentType("text/html");
jaroslav@330:             OutputStream os = response.getOutputStream();
jaroslav@330:             InputStream is = Bck2BrwsrLauncher.class.getResourceAsStream("console.xhtml");
jaroslav@331:             copyStream(is, os, args);
jaroslav@330:         }
jaroslav@330:     }
jaroslav@330: 
jaroslav@330:     private static class VM extends HttpHandler {
jaroslav@330:         private final ClassLoader loader;
jaroslav@330: 
jaroslav@330:         public VM(ClassLoader loader) {
jaroslav@330:             this.loader = loader;
jaroslav@330:         }
jaroslav@330: 
jaroslav@330:         @Override
jaroslav@330:         public void service(Request request, Response response) throws Exception {
jaroslav@330:             response.setCharacterEncoding("UTF-8");
jaroslav@330:             response.setContentType("text/javascript");
jaroslav@330:             Bck2Brwsr.generate(response.getWriter(), loader);
jaroslav@330:         }
jaroslav@330:     }
jaroslav@330: 
jaroslav@330:     private static class Classes extends HttpHandler {
jaroslav@330:         private final ClassLoader loader;
jaroslav@330: 
jaroslav@330:         public Classes(ClassLoader loader) {
jaroslav@330:             this.loader = loader;
jaroslav@330:         }
jaroslav@330: 
jaroslav@330:         @Override
jaroslav@330:         public void service(Request request, Response response) throws Exception {
jaroslav@330:             String res = request.getHttpHandlerPath();
jaroslav@330:             if (res.startsWith("/")) {
jaroslav@330:                 res = res.substring(1);
jaroslav@330:             }
jaroslav@330:             Enumeration<URL> en = loader.getResources(res);
jaroslav@330:             URL u = null;
jaroslav@330:             while (en.hasMoreElements()) {
jaroslav@330:                 u = en.nextElement();
jaroslav@330:             }
jaroslav@330:             if (u == null) {
jaroslav@330:                 response.setError();
jaroslav@330:                 response.setDetailMessage("Can't find resource " + res);
jaroslav@330:             }
jaroslav@330:             response.setContentType("text/javascript");
jaroslav@330:             InputStream is = u.openStream();
jaroslav@330:             Writer w = response.getWriter();
jaroslav@330:             w.append("[");
jaroslav@330:             for (int i = 0;; i++) {
jaroslav@330:                 int b = is.read();
jaroslav@330:                 if (b == -1) {
jaroslav@330:                     break;
jaroslav@330:                 }
jaroslav@330:                 if (i > 0) {
jaroslav@330:                     w.append(", ");
jaroslav@330:                 }
jaroslav@330:                 if (i % 20 == 0) {
jaroslav@330:                     w.write("\n");
jaroslav@330:                 }
jaroslav@330:                 if (b > 127) {
jaroslav@330:                     b = b - 256;
jaroslav@330:                 }
jaroslav@330:                 w.append(Integer.toString(b));
jaroslav@330:             }
jaroslav@330:             w.append("\n]");
jaroslav@330:         }
jaroslav@330:     }
jaroslav@323: }