diff -r a758763f8415 -r ecbd252fd3a7 rt/launcher/src/main/java/org/apidesign/bck2brwsr/launcher/Bck2BrwsrLauncher.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rt/launcher/src/main/java/org/apidesign/bck2brwsr/launcher/Bck2BrwsrLauncher.java	Fri Mar 22 17:03:32 2013 +0100
@@ -0,0 +1,574 @@
+/**
+ * Back 2 Browser Bytecode Translator
+ * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. Look for COPYING file in the top folder.
+ * If not, see http://opensource.org/licenses/GPL-2.0.
+ */
+package org.apidesign.bck2brwsr.launcher;
+
+import java.io.Closeable;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InterruptedIOException;
+import java.io.OutputStream;
+import java.io.UnsupportedEncodingException;
+import java.io.Writer;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Enumeration;
+import java.util.LinkedHashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.TimeUnit;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import org.apidesign.bck2brwsr.launcher.InvocationContext.Resource;
+import org.apidesign.vm4brwsr.Bck2Brwsr;
+import org.glassfish.grizzly.PortRange;
+import org.glassfish.grizzly.http.server.HttpHandler;
+import org.glassfish.grizzly.http.server.HttpServer;
+import org.glassfish.grizzly.http.server.NetworkListener;
+import org.glassfish.grizzly.http.server.Request;
+import org.glassfish.grizzly.http.server.Response;
+import org.glassfish.grizzly.http.server.ServerConfiguration;
+import org.glassfish.grizzly.http.util.HttpStatus;
+
+/**
+ * Lightweight server to launch Bck2Brwsr applications and tests.
+ * Supports execution in native browser as well as Java's internal 
+ * execution engine.
+ */
+final class Bck2BrwsrLauncher extends Launcher implements Closeable {
+    private static final Logger LOG = Logger.getLogger(Bck2BrwsrLauncher.class.getName());
+    private static final InvocationContext END = new InvocationContext(null, null, null);
+    private final Set<ClassLoader> loaders = new LinkedHashSet<>();
+    private final BlockingQueue<InvocationContext> methods = new LinkedBlockingQueue<>();
+    private long timeOut;
+    private final Res resources = new Res();
+    private final String cmd;
+    private Object[] brwsr;
+    private HttpServer server;
+    private CountDownLatch wait;
+    
+    public Bck2BrwsrLauncher(String cmd) {
+        this.cmd = cmd;
+    }
+    
+    @Override
+    InvocationContext runMethod(InvocationContext c) throws IOException {
+        loaders.add(c.clazz.getClassLoader());
+        methods.add(c);
+        try {
+            c.await(timeOut);
+        } catch (InterruptedException ex) {
+            throw new IOException(ex);
+        }
+        return c;
+    }
+    
+    public void setTimeout(long ms) {
+        timeOut = ms;
+    }
+    
+    public void addClassLoader(ClassLoader url) {
+        this.loaders.add(url);
+    }
+
+    public void showURL(String startpage) throws IOException {
+        if (!startpage.startsWith("/")) {
+            startpage = "/" + startpage;
+        }
+        HttpServer s = initServer(".", true);
+        int last = startpage.lastIndexOf('/');
+        String simpleName = startpage.substring(last);
+        s.getServerConfiguration().addHttpHandler(new Page(resources, startpage), simpleName);
+        s.getServerConfiguration().addHttpHandler(new Page(resources, null), "/");
+        try {
+            launchServerAndBrwsr(s, simpleName);
+        } catch (URISyntaxException | InterruptedException ex) {
+            throw new IOException(ex);
+        }
+    }
+
+    void showDirectory(File dir, String startpage) throws IOException {
+        if (!startpage.startsWith("/")) {
+            startpage = "/" + startpage;
+        }
+        HttpServer s = initServer(dir.getPath(), false);
+        try {
+            launchServerAndBrwsr(s, startpage);
+        } catch (URISyntaxException | InterruptedException ex) {
+            throw new IOException(ex);
+        }
+    }
+
+    @Override
+    public void initialize() throws IOException {
+        try {
+            executeInBrowser();
+        } catch (InterruptedException ex) {
+            final InterruptedIOException iio = new InterruptedIOException(ex.getMessage());
+            iio.initCause(ex);
+            throw iio;
+        } catch (Exception ex) {
+            if (ex instanceof IOException) {
+                throw (IOException)ex;
+            }
+            if (ex instanceof RuntimeException) {
+                throw (RuntimeException)ex;
+            }
+            throw new IOException(ex);
+        }
+    }
+    
+    private HttpServer initServer(String path, boolean addClasses) throws IOException {
+        HttpServer s = HttpServer.createSimpleServer(path, new PortRange(8080, 65535));
+
+        final ServerConfiguration conf = s.getServerConfiguration();
+        if (addClasses) {
+            conf.addHttpHandler(new VM(resources), "/bck2brwsr.js");
+            conf.addHttpHandler(new Classes(resources), "/classes/");
+        }
+        return s;
+    }
+    
+    private void executeInBrowser() throws InterruptedException, URISyntaxException, IOException {
+        wait = new CountDownLatch(1);
+        server = initServer(".", true);
+        final ServerConfiguration conf = server.getServerConfiguration();
+        
+        class DynamicResourceHandler extends HttpHandler {
+            private final InvocationContext ic;
+            public DynamicResourceHandler(InvocationContext ic) {
+                if (ic == null || ic.resources.isEmpty()) {
+                    throw new NullPointerException();
+                }
+                this.ic = ic;
+                for (Resource r : ic.resources) {
+                    conf.addHttpHandler(this, r.httpPath);
+                }
+            }
+
+            public void close() {
+                conf.removeHttpHandler(this);
+            }
+            
+            @Override
+            public void service(Request request, Response response) throws Exception {
+                for (Resource r : ic.resources) {
+                    if (r.httpPath.equals(request.getRequestURI())) {
+                        LOG.log(Level.INFO, "Serving HttpResource for {0}", request.getRequestURI());
+                        response.setContentType(r.httpType);
+                        copyStream(r.httpContent, response.getOutputStream(), null);
+                    }
+                }
+            }
+        }
+        
+        conf.addHttpHandler(new Page(resources, 
+            "org/apidesign/bck2brwsr/launcher/harness.xhtml"
+        ), "/execute");
+        
+        conf.addHttpHandler(new HttpHandler() {
+            int cnt;
+            List<InvocationContext> cases = new ArrayList<>();
+            DynamicResourceHandler prev;
+            @Override
+            public void service(Request request, Response response) throws Exception {
+                String id = request.getParameter("request");
+                String value = request.getParameter("result");
+                if (value != null && value.indexOf((char)0xC5) != -1) {
+                    value = toUTF8(value);
+                }
+                
+                
+                InvocationContext mi = null;
+                int caseNmbr = -1;
+                
+                if (id != null && value != null) {
+                    LOG.log(Level.INFO, "Received result for case {0} = {1}", new Object[]{id, value});
+                    value = decodeURL(value);
+                    int indx = Integer.parseInt(id);
+                    cases.get(indx).result(value, null);
+                    if (++indx < cases.size()) {
+                        mi = cases.get(indx);
+                        LOG.log(Level.INFO, "Re-executing case {0}", indx);
+                        caseNmbr = indx;
+                    }
+                } else {
+                    if (!cases.isEmpty()) {
+                        LOG.info("Re-executing test cases");
+                        mi = cases.get(0);
+                        caseNmbr = 0;
+                    }
+                }
+                
+                if (prev != null) {
+                    prev.close();
+                    prev = null;
+                }
+                
+                if (mi == null) {
+                    mi = methods.take();
+                    caseNmbr = cnt++;
+                }
+                if (mi == END) {
+                    response.getWriter().write("");
+                    wait.countDown();
+                    cnt = 0;
+                    LOG.log(Level.INFO, "End of data reached. Exiting.");
+                    return;
+                }
+                
+                if (!mi.resources.isEmpty()) {
+                    prev = new DynamicResourceHandler(mi);
+                }
+                
+                cases.add(mi);
+                final String cn = mi.clazz.getName();
+                final String mn = mi.methodName;
+                LOG.log(Level.INFO, "Request for {0} case. Sending {1}.{2}", new Object[]{caseNmbr, cn, mn});
+                response.getWriter().write("{"
+                    + "className: '" + cn + "', "
+                    + "methodName: '" + mn + "', "
+                    + "request: " + caseNmbr
+                );
+                if (mi.html != null) {
+                    response.getWriter().write(", html: '");
+                    response.getWriter().write(encodeJSON(mi.html));
+                    response.getWriter().write("'");
+                }
+                response.getWriter().write("}");
+            }
+        }, "/data");
+
+        this.brwsr = launchServerAndBrwsr(server, "/execute");
+    }
+    
+    private static String encodeJSON(String in) {
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < in.length(); i++) {
+            char ch = in.charAt(i);
+            if (ch < 32 || ch == '\'' || ch == '"') {
+                sb.append("\\u");
+                String hs = "0000" + Integer.toHexString(ch);
+                hs = hs.substring(hs.length() - 4);
+                sb.append(hs);
+            } else {
+                sb.append(ch);
+            }
+        }
+        return sb.toString();
+    }
+    
+    @Override
+    public void shutdown() throws IOException {
+        methods.offer(END);
+        for (;;) {
+            int prev = methods.size();
+            try {
+                if (wait != null && wait.await(timeOut, TimeUnit.MILLISECONDS)) {
+                    break;
+                }
+            } catch (InterruptedException ex) {
+                throw new IOException(ex);
+            }
+            if (prev == methods.size()) {
+                LOG.log(
+                    Level.WARNING, 
+                    "Timeout and no test has been executed meanwhile (at {0}). Giving up.", 
+                    methods.size()
+                );
+                break;
+            }
+            LOG.log(Level.INFO, 
+                "Timeout, but tests got from {0} to {1}. Trying again.", 
+                new Object[]{prev, methods.size()}
+            );
+        }
+        stopServerAndBrwsr(server, brwsr);
+    }
+    
+    static void copyStream(InputStream is, OutputStream os, String baseURL, String... params) throws IOException {
+        for (;;) {
+            int ch = is.read();
+            if (ch == -1) {
+                break;
+            }
+            if (ch == '$' && params.length > 0) {
+                int cnt = is.read() - '0';
+                if (cnt == 'U' - '0') {
+                    os.write(baseURL.getBytes("UTF-8"));
+                } else {
+                    if (cnt >= 0 && cnt < params.length) {
+                        os.write(params[cnt].getBytes("UTF-8"));
+                    } else {
+                        os.write('$');
+                        os.write(cnt + '0');
+                    }
+                }
+            } else {
+                os.write(ch);
+            }
+        }
+    }
+
+    private Object[] launchServerAndBrwsr(HttpServer server, final String page) throws IOException, URISyntaxException, InterruptedException {
+        server.start();
+        NetworkListener listener = server.getListeners().iterator().next();
+        int port = listener.getPort();
+        
+        URI uri = new URI("http://localhost:" + port + page);
+        LOG.log(Level.INFO, "Showing {0}", uri);
+        if (cmd == null) {
+            try {
+                LOG.log(Level.INFO, "Trying Desktop.browse on {0} {2} by {1}", new Object[] {
+                    System.getProperty("java.vm.name"),
+                    System.getProperty("java.vm.vendor"),
+                    System.getProperty("java.vm.version"),
+                });
+                java.awt.Desktop.getDesktop().browse(uri);
+                LOG.log(Level.INFO, "Desktop.browse successfully finished");
+                return null;
+            } catch (UnsupportedOperationException ex) {
+                LOG.log(Level.INFO, "Desktop.browse not supported: {0}", ex.getMessage());
+                LOG.log(Level.FINE, null, ex);
+            }
+        }
+        {
+            String cmdName = cmd == null ? "xdg-open" : cmd;
+            String[] cmdArr = { 
+                cmdName, uri.toString()
+            };
+            LOG.log(Level.INFO, "Launching {0}", Arrays.toString(cmdArr));
+            final Process process = Runtime.getRuntime().exec(cmdArr);
+            return new Object[] { process, null };
+        }
+    }
+    private static String toUTF8(String value) throws UnsupportedEncodingException {
+        byte[] arr = new byte[value.length()];
+        for (int i = 0; i < arr.length; i++) {
+            arr[i] = (byte)value.charAt(i);
+        }
+        return new String(arr, "UTF-8");
+    }
+    
+    private static String decodeURL(String s) {
+        for (;;) {
+            int pos = s.indexOf('%');
+            if (pos == -1) {
+                return s;
+            }
+            int i = Integer.parseInt(s.substring(pos + 1, pos + 2), 16);
+            s = s.substring(0, pos) + (char)i + s.substring(pos + 2);
+        }
+    }
+    
+    private void stopServerAndBrwsr(HttpServer server, Object[] brwsr) throws IOException {
+        if (brwsr == null) {
+            return;
+        }
+        Process process = (Process)brwsr[0];
+        
+        server.stop();
+        InputStream stdout = process.getInputStream();
+        InputStream stderr = process.getErrorStream();
+        drain("StdOut", stdout);
+        drain("StdErr", stderr);
+        process.destroy();
+        int res;
+        try {
+            res = process.waitFor();
+        } catch (InterruptedException ex) {
+            throw new IOException(ex);
+        }
+        LOG.log(Level.INFO, "Exit code: {0}", res);
+
+        deleteTree((File)brwsr[1]);
+    }
+    
+    private static void drain(String name, InputStream is) throws IOException {
+        int av = is.available();
+        if (av > 0) {
+            StringBuilder sb = new StringBuilder();
+            sb.append("v== ").append(name).append(" ==v\n");
+            while (av-- > 0) {
+                sb.append((char)is.read());
+            }
+            sb.append("\n^== ").append(name).append(" ==^");
+            LOG.log(Level.INFO, sb.toString());
+        }
+    }
+
+    private void deleteTree(File file) {
+        if (file == null) {
+            return;
+        }
+        File[] arr = file.listFiles();
+        if (arr != null) {
+            for (File s : arr) {
+                deleteTree(s);
+            }
+        }
+        file.delete();
+    }
+
+    @Override
+    public void close() throws IOException {
+        shutdown();
+    }
+
+    private class Res implements Bck2Brwsr.Resources {
+        @Override
+        public InputStream get(String resource) throws IOException {
+            for (ClassLoader l : loaders) {
+                URL u = null;
+                Enumeration<URL> en = l.getResources(resource);
+                while (en.hasMoreElements()) {
+                    u = en.nextElement();
+                }
+                if (u != null) {
+                    return u.openStream();
+                }
+            }
+            throw new IOException("Can't find " + resource);
+        }
+    }
+
+    private static class Page extends HttpHandler {
+        private final String resource;
+        private final String[] args;
+        private final Res res;
+        
+        public Page(Res res, String resource, String... args) {
+            this.res = res;
+            this.resource = resource;
+            this.args = args.length == 0 ? new String[] { "$0" } : args;
+        }
+
+        @Override
+        public void service(Request request, Response response) throws Exception {
+            String r = resource;
+            if (r == null) {
+                r = request.getHttpHandlerPath();
+            }
+            if (r.startsWith("/")) {
+                r = r.substring(1);
+            }
+            String[] replace = {};
+            if (r.endsWith(".html")) {
+                response.setContentType("text/html");
+                LOG.info("Content type text/html");
+                replace = args;
+            }
+            if (r.endsWith(".xhtml")) {
+                response.setContentType("application/xhtml+xml");
+                LOG.info("Content type application/xhtml+xml");
+                replace = args;
+            }
+            OutputStream os = response.getOutputStream();
+            try (InputStream is = res.get(r)) {
+                copyStream(is, os, request.getRequestURL().toString(), replace);
+            } catch (IOException ex) {
+                response.setDetailMessage(ex.getLocalizedMessage());
+                response.setError();
+                response.setStatus(404);
+            }
+        }
+    }
+
+    private static class VM extends HttpHandler {
+        private final String bck2brwsr;
+
+        public VM(Res loader) throws IOException {
+            StringBuilder sb = new StringBuilder();
+            Bck2Brwsr.generate(sb, loader);
+            sb.append(
+                  "(function WrapperVM(global) {"
+                + "  function ldCls(res) {\n"
+                + "    var request = new XMLHttpRequest();\n"
+                + "    request.open('GET', '/classes/' + res, false);\n"
+                + "    request.send();\n"
+                + "    if (request.status !== 200) return null;\n"
+                + "    var arr = eval('(' + request.responseText + ')');\n"
+                + "    return arr;\n"
+                + "  }\n"
+                + "  var prevvm = global.bck2brwsr;\n"
+                + "  global.bck2brwsr = function() {\n"
+                + "    var args = Array.prototype.slice.apply(arguments);\n"
+                + "    args.unshift(ldCls);\n"
+                + "    return prevvm.apply(null, args);\n"
+                + "  };\n"
+                + "})(this);\n"
+            );
+            this.bck2brwsr = sb.toString();
+        }
+
+        @Override
+        public void service(Request request, Response response) throws Exception {
+            response.setCharacterEncoding("UTF-8");
+            response.setContentType("text/javascript");
+            response.getWriter().write(bck2brwsr);
+        }
+    }
+
+    private static class Classes extends HttpHandler {
+        private final Res loader;
+
+        public Classes(Res loader) {
+            this.loader = loader;
+        }
+
+        @Override
+        public void service(Request request, Response response) throws Exception {
+            String res = request.getHttpHandlerPath();
+            if (res.startsWith("/")) {
+                res = res.substring(1);
+            }
+            try (InputStream is = loader.get(res)) {
+                response.setContentType("text/javascript");
+                Writer w = response.getWriter();
+                w.append("[");
+                for (int i = 0;; i++) {
+                    int b = is.read();
+                    if (b == -1) {
+                        break;
+                    }
+                    if (i > 0) {
+                        w.append(", ");
+                    }
+                    if (i % 20 == 0) {
+                        w.write("\n");
+                    }
+                    if (b > 127) {
+                        b = b - 256;
+                    }
+                    w.append(Integer.toString(b));
+                }
+                w.append("\n]");
+            } catch (IOException ex) {
+                response.setStatus(HttpStatus.NOT_FOUND_404);
+                response.setError();
+                response.setDetailMessage(ex.getMessage());
+            }
+        }
+    }
+}