1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/rt/launcher/src/main/java/org/apidesign/bck2brwsr/launcher/impl/Console.java Tue Feb 26 16:54:16 2013 +0100
1.3 @@ -0,0 +1,255 @@
1.4 +/**
1.5 + * Back 2 Browser Bytecode Translator
1.6 + * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
1.7 + *
1.8 + * This program is free software: you can redistribute it and/or modify
1.9 + * it under the terms of the GNU General Public License as published by
1.10 + * the Free Software Foundation, version 2 of the License.
1.11 + *
1.12 + * This program is distributed in the hope that it will be useful,
1.13 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.14 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.15 + * GNU General Public License for more details.
1.16 + *
1.17 + * You should have received a copy of the GNU General Public License
1.18 + * along with this program. Look for COPYING file in the top folder.
1.19 + * If not, see http://opensource.org/licenses/GPL-2.0.
1.20 + */
1.21 +package org.apidesign.bck2brwsr.launcher.impl;
1.22 +
1.23 +import java.io.IOException;
1.24 +import java.io.InputStream;
1.25 +import java.lang.reflect.InvocationTargetException;
1.26 +import java.lang.reflect.Method;
1.27 +import java.lang.reflect.Modifier;
1.28 +import java.net.URL;
1.29 +import java.util.Enumeration;
1.30 +import org.apidesign.bck2brwsr.core.JavaScriptBody;
1.31 +
1.32 +/**
1.33 + *
1.34 + * @author Jaroslav Tulach <jtulach@netbeans.org>
1.35 + */
1.36 +public class Console {
1.37 + private Console() {
1.38 + }
1.39 + static {
1.40 + turnAssetionStatusOn();
1.41 + }
1.42 +
1.43 + @JavaScriptBody(args = {"id", "attr"}, body =
1.44 + "return window.document.getElementById(id)[attr].toString();")
1.45 + private static native Object getAttr(String id, String attr);
1.46 +
1.47 + @JavaScriptBody(args = {"id", "attr", "value"}, body =
1.48 + "window.document.getElementById(id)[attr] = value;")
1.49 + private static native void setAttr(String id, String attr, Object value);
1.50 +
1.51 + @JavaScriptBody(args = {}, body = "return; window.close();")
1.52 + private static native void closeWindow();
1.53 +
1.54 + private static void log(String newText) {
1.55 + String id = "bck2brwsr.result";
1.56 + String attr = "value";
1.57 + setAttr(id, attr, getAttr(id, attr) + "\n" + newText);
1.58 + setAttr(id, "scrollTop", getAttr(id, "scrollHeight"));
1.59 + }
1.60 +
1.61 + public static void execute() throws Exception {
1.62 + String clazz = (String) getAttr("clazz", "value");
1.63 + String method = (String) getAttr("method", "value");
1.64 + Object res = invokeMethod(clazz, method);
1.65 + setAttr("bck2brwsr.result", "value", res);
1.66 + }
1.67 +
1.68 + @JavaScriptBody(args = { "url", "callback", "arr" }, body = ""
1.69 + + "var request = new XMLHttpRequest();\n"
1.70 + + "request.open('GET', url, true);\n"
1.71 + + "request.onreadystatechange = function() {\n"
1.72 + + " if (this.readyState!==4) return;\n"
1.73 + + " arr[0] = this.responseText;\n"
1.74 + + " callback.run__V();\n"
1.75 + + "};"
1.76 + + "request.send();"
1.77 + )
1.78 + private static native void loadText(String url, Runnable callback, String[] arr) throws IOException;
1.79 +
1.80 + public static void harness(String url) throws IOException {
1.81 + log("Connecting to " + url);
1.82 + Request r = new Request(url);
1.83 + }
1.84 +
1.85 + private static class Request implements Runnable {
1.86 + private final String[] arr = { null };
1.87 + private final String url;
1.88 +
1.89 + private Request(String url) throws IOException {
1.90 + this.url = url;
1.91 + loadText(url, this, arr);
1.92 + }
1.93 +
1.94 + @Override
1.95 + public void run() {
1.96 + try {
1.97 + String data = arr[0];
1.98 + log("\nGot \"" + data + "\"");
1.99 +
1.100 + if (data == null) {
1.101 + log("Some error exiting");
1.102 + closeWindow();
1.103 + return;
1.104 + }
1.105 +
1.106 + if (data.isEmpty()) {
1.107 + log("No data, exiting");
1.108 + closeWindow();
1.109 + return;
1.110 + }
1.111 +
1.112 + Case c = Case.parseData(data);
1.113 + if (c.getHtmlFragment() != null) {
1.114 + setAttr("bck2brwsr.fragment", "innerHTML", c.getHtmlFragment());
1.115 + }
1.116 + log("Invoking " + c.getClassName() + '.' + c.getMethodName() + " as request: " + c.getRequestId());
1.117 +
1.118 + Object result = invokeMethod(c.getClassName(), c.getMethodName());
1.119 +
1.120 + setAttr("bck2brwsr.fragment", "innerHTML", "");
1.121 + log("Result: " + result);
1.122 +
1.123 + result = encodeURL("" + result);
1.124 +
1.125 + log("Sending back: " + url + "?request=" + c.getRequestId() + "&result=" + result);
1.126 + String u = url + "?request=" + c.getRequestId() + "&result=" + result;
1.127 +
1.128 + loadText(u, this, arr);
1.129 +
1.130 + } catch (Exception ex) {
1.131 + log(ex.getClass().getName() + ":" + ex.getMessage());
1.132 + }
1.133 + }
1.134 + }
1.135 +
1.136 + private static String encodeURL(String r) {
1.137 + StringBuilder sb = new StringBuilder();
1.138 + for (int i = 0; i < r.length(); i++) {
1.139 + int ch = r.charAt(i);
1.140 + if (ch < 32 || ch == '%' || ch == '+') {
1.141 + sb.append("%").append(("0" + Integer.toHexString(ch)).substring(0, 2));
1.142 + } else {
1.143 + if (ch == 32) {
1.144 + sb.append("+");
1.145 + } else {
1.146 + sb.append((char)ch);
1.147 + }
1.148 + }
1.149 + }
1.150 + return sb.toString();
1.151 + }
1.152 +
1.153 + static String invoke(String clazz, String method) throws ClassNotFoundException, InvocationTargetException, IllegalAccessException, InstantiationException {
1.154 + final Object r = invokeMethod(clazz, method);
1.155 + return r == null ? "null" : r.toString().toString();
1.156 + }
1.157 +
1.158 + /** Helper method that inspects the classpath and loads given resource
1.159 + * (usually a class file). Used while running tests in Rhino.
1.160 + *
1.161 + * @param name resource name to find
1.162 + * @return the array of bytes in the given resource
1.163 + * @throws IOException I/O in case something goes wrong
1.164 + */
1.165 + public static byte[] read(String name) throws IOException {
1.166 + URL u = null;
1.167 + Enumeration<URL> en = Console.class.getClassLoader().getResources(name);
1.168 + while (en.hasMoreElements()) {
1.169 + u = en.nextElement();
1.170 + }
1.171 + if (u == null) {
1.172 + throw new IOException("Can't find " + name);
1.173 + }
1.174 + try (InputStream is = u.openStream()) {
1.175 + byte[] arr;
1.176 + arr = new byte[is.available()];
1.177 + int offset = 0;
1.178 + while (offset < arr.length) {
1.179 + int len = is.read(arr, offset, arr.length - offset);
1.180 + if (len == -1) {
1.181 + throw new IOException("Can't read " + name);
1.182 + }
1.183 + offset += len;
1.184 + }
1.185 + return arr;
1.186 + }
1.187 + }
1.188 +
1.189 + private static Object invokeMethod(String clazz, String method)
1.190 + throws ClassNotFoundException, InvocationTargetException,
1.191 + SecurityException, IllegalAccessException, IllegalArgumentException,
1.192 + InstantiationException {
1.193 + Method found = null;
1.194 + Class<?> c = Class.forName(clazz);
1.195 + for (Method m : c.getMethods()) {
1.196 + if (m.getName().equals(method)) {
1.197 + found = m;
1.198 + }
1.199 + }
1.200 + Object res;
1.201 + if (found != null) {
1.202 + try {
1.203 + if ((found.getModifiers() & Modifier.STATIC) != 0) {
1.204 + res = found.invoke(null);
1.205 + } else {
1.206 + res = found.invoke(c.newInstance());
1.207 + }
1.208 + } catch (Throwable ex) {
1.209 + res = ex.getClass().getName() + ":" + ex.getMessage();
1.210 + }
1.211 + } else {
1.212 + res = "Can't find method " + method + " in " + clazz;
1.213 + }
1.214 + return res;
1.215 + }
1.216 +
1.217 + @JavaScriptBody(args = {}, body = "vm.desiredAssertionStatus = true;")
1.218 + private static void turnAssetionStatusOn() {
1.219 + }
1.220 +
1.221 + private static final class Case {
1.222 + private final Object data;
1.223 +
1.224 + private Case(Object data) {
1.225 + this.data = data;
1.226 + }
1.227 +
1.228 + public static Case parseData(String s) {
1.229 + return new Case(toJSON(s));
1.230 + }
1.231 +
1.232 + public String getMethodName() {
1.233 + return value("methodName", data);
1.234 + }
1.235 +
1.236 + public String getClassName() {
1.237 + return value("className", data);
1.238 + }
1.239 +
1.240 + public String getRequestId() {
1.241 + return value("request", data);
1.242 + }
1.243 +
1.244 + public String getHtmlFragment() {
1.245 + return value("html", data);
1.246 + }
1.247 +
1.248 + @JavaScriptBody(args = "s", body = "return eval('(' + s + ')');")
1.249 + private static native Object toJSON(String s);
1.250 +
1.251 + @JavaScriptBody(args = {"p", "d"}, body =
1.252 + "var v = d[p];\n"
1.253 + + "if (typeof v === 'undefined') return null;\n"
1.254 + + "return v.toString();"
1.255 + )
1.256 + private static native String value(String p, Object d);
1.257 + }
1.258 +}