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@1041: package org.apidesign.bck2brwsr.launcher.fximpl;
jaroslav@323: 
jaroslav@360: import java.io.IOException;
jaroslav@360: import java.io.InputStream;
jaroslav@802: import java.io.UnsupportedEncodingException;
jaroslav@332: import java.lang.reflect.InvocationTargetException;
jaroslav@323: import java.lang.reflect.Method;
jaroslav@412: import java.lang.reflect.Modifier;
jaroslav@332: import java.net.URL;
jaroslav@360: import java.util.Enumeration;
jaroslav@1041: import javafx.scene.web.WebEngine;
jaroslav@1041: import netscape.javascript.JSObject;
jaroslav@323: 
jaroslav@323: /**
jaroslav@323:  *
jaroslav@323:  * @author Jaroslav Tulach <jtulach@netbeans.org>
jaroslav@323:  */
jaroslav@1041: public final class Console {
jaroslav@1041:     public Console() {
jaroslav@517:     }
jaroslav@323:     
jaroslav@1041:     private static Object getAttr(Object elem, String attr) {
jaroslav@1041:         return InvokeJS.CObject.call("getAttr", elem, attr);
jaroslav@1041:     }
jaroslav@323: 
jaroslav@1041:     private static void setAttr(String id, String attr, Object value) {
jaroslav@1041:         InvokeJS.CObject.call("setAttrId", id, attr, value);
jaroslav@1041:     }
jaroslav@1041:     private static void setAttr(Object id, String attr, Object value) {
jaroslav@1041:         InvokeJS.CObject.call("setAttr", id, attr, value);
jaroslav@1041:     }
jaroslav@366:     
jaroslav@1041:     private static void closeWindow() {}
jaroslav@342: 
jaroslav@916:     private static Object textArea;
jaroslav@916:     private static Object statusArea;
jaroslav@916:     
jaroslav@343:     private static void log(String newText) {
jaroslav@916:         if (textArea == null) {
jaroslav@916:             return;
jaroslav@916:         }
jaroslav@343:         String attr = "value";
jaroslav@916:         setAttr(textArea, attr, getAttr(textArea, attr) + "\n" + newText);
jaroslav@916:         setAttr(textArea, "scrollTop", getAttr(textArea, "scrollHeight"));
jaroslav@342:     }
jaroslav@323:     
jaroslav@916:     private static void beginTest(Case c) {
jaroslav@916:         Object[] arr = new Object[2];
jaroslav@916:         beginTest(c.getClassName() + "." + c.getMethodName(), c, arr);
jaroslav@916:         textArea = arr[0];
jaroslav@916:         statusArea = arr[1];
jaroslav@916:     }
jaroslav@916:     
jaroslav@916:     private static void finishTest(Case c, Object res) {
jaroslav@916:         if ("null".equals(res)) {
jaroslav@922:             setAttr(statusArea, "innerHTML", "Success");
jaroslav@916:         } else {
jaroslav@922:             setAttr(statusArea, "innerHTML", "Result " + res);
jaroslav@916:         }
jaroslav@916:         statusArea = null;
jaroslav@916:         textArea = null;
jaroslav@916:     }
jaroslav@916: 
jaroslav@1041:     private static final String BEGIN_TEST =  
jaroslav@1041:         "var ul = window.document.getElementById('bck2brwsr.result');\n"
jaroslav@916:         + "var li = window.document.createElement('li');\n"
jaroslav@922:         + "var span = window.document.createElement('span');"
jaroslav@916:         + "span.innerHTML = test + ' - ';\n"
jaroslav@922:         + "var details = window.document.createElement('a');\n"
jaroslav@922:         + "details.innerHTML = 'Details';\n"
jaroslav@922:         + "details.href = '#';\n"
jaroslav@916:         + "var p = window.document.createElement('p');\n"
jaroslav@916:         + "var status = window.document.createElement('a');\n"
jaroslav@916:         + "status.innerHTML = 'running';"
jaroslav@922:         + "details.onclick = function() { li.appendChild(p); li.removeChild(details); status.innerHTML = 'Run Again'; status.href = '#'; };\n"
jaroslav@1041:         + "status.onclick = function() { c.again(arr); }\n"
jaroslav@916:         + "var pre = window.document.createElement('textarea');\n"
jaroslav@922:         + "pre.cols = 100;"
jaroslav@922:         + "pre.rows = 10;"
jaroslav@916:         + "li.appendChild(span);\n"
jaroslav@916:         + "li.appendChild(status);\n"
jaroslav@922:         + "var span = window.document.createElement('span');"
jaroslav@922:         + "span.innerHTML = ' ';\n"
jaroslav@922:         + "li.appendChild(span);\n"
jaroslav@922:         + "li.appendChild(details);\n"
jaroslav@916:         + "p.appendChild(pre);\n"
jaroslav@916:         + "ul.appendChild(li);\n"
jaroslav@916:         + "arr[0] = pre;\n"
jaroslav@1041:         + "arr[1] = status;\n";
jaroslav@1041:         
jaroslav@1041:     private static void beginTest(String test, Case c, Object[] arr) {
jaroslav@1041:         InvokeJS.CObject.call("beginTest", test, c, arr);
jaroslav@1041:     }
jaroslav@916:     
jaroslav@1041:     private static final String LOAD_TEXT = 
jaroslav@1041:           "var request = new XMLHttpRequest();\n"
jaroslav@519:         + "request.open('GET', url, true);\n"
jaroslav@800:         + "request.setRequestHeader('Content-Type', 'text/plain; charset=utf-8');\n"
jaroslav@519:         + "request.onreadystatechange = function() {\n"
jaroslav@519:         + "  if (this.readyState!==4) return;\n"
jaroslav@1041:         + " try {"
jaroslav@519:         + "  arr[0] = this.responseText;\n"
jaroslav@519:         + "  callback.run__V();\n"
jaroslav@1041:         + " } catch (e) { alert(e); }"
jaroslav@519:         + "};"
jaroslav@1041:         + "request.send();";
jaroslav@1041:     private static void loadText(String url, Runnable callback, String[] arr) throws IOException {
jaroslav@1041:         InvokeJS.CObject.call("loadText", url, new Run(callback), arr);
jaroslav@1041:     }
jaroslav@332:     
jaroslav@1041:     public static void runHarness(String url) throws IOException {
jaroslav@1041:         new Console().harness(url);
jaroslav@1041:     }
jaroslav@1041:     
jaroslav@1041:     public void harness(String url) throws IOException {
jaroslav@343:         log("Connecting to " + url);
jaroslav@519:         Request r = new Request(url);
jaroslav@519:     }
jaroslav@519:     
jaroslav@519:     private static class Request implements Runnable {
jaroslav@519:         private final String[] arr = { null };
jaroslav@519:         private final String url;
jaroslav@939:         private Case c;
jaroslav@942:         private int retries;
jaroslav@519: 
jaroslav@519:         private Request(String url) throws IOException {
jaroslav@519:             this.url = url;
jaroslav@519:             loadText(url, this, arr);
jaroslav@519:         }
jaroslav@939:         private Request(String url, String u) throws IOException {
jaroslav@939:             this.url = url;
jaroslav@939:             loadText(u, this, arr);
jaroslav@939:         }
jaroslav@519:         
jaroslav@519:         @Override
jaroslav@519:         public void run() {
jaroslav@519:             try {
jaroslav@939:                 if (c == null) {
jaroslav@939:                     String data = arr[0];
jaroslav@939: 
jaroslav@939:                     if (data == null) {
jaroslav@939:                         log("Some error exiting");
jaroslav@939:                         closeWindow();
jaroslav@939:                         return;
jaroslav@939:                     }
jaroslav@939: 
jaroslav@939:                     if (data.isEmpty()) {
jaroslav@939:                         log("No data, exiting");
jaroslav@939:                         closeWindow();
jaroslav@939:                         return;
jaroslav@939:                     }
jaroslav@939: 
jaroslav@939:                     c = Case.parseData(data);
jaroslav@939:                     beginTest(c);
jaroslav@940:                     log("Got \"" + data + "\"");
jaroslav@940:                 } else {
jaroslav@942:                     log("Processing \"" + arr[0] + "\" for " + retries + " time");
jaroslav@939:                 }
jaroslav@942:                 Object result = retries++ >= 10 ? "java.lang.InterruptedException:timeout" : c.runTest();
jaroslav@939:                 finishTest(c, result);
jaroslav@519:                 
jaroslav@939:                 String u = url + "?request=" + c.getRequestId() + "&result=" + result;
jaroslav@939:                 new Request(url, u);
jaroslav@939:             } catch (Exception ex) {
jaroslav@939:                 if (ex instanceof InterruptedException) {
jaroslav@940:                     log("Re-scheduling in 100ms");
jaroslav@940:                     schedule(this, 100);
jaroslav@519:                     return;
jaroslav@519:                 }
jaroslav@707:                 log(ex.getClass().getName() + ":" + ex.getMessage());
jaroslav@342:             }
jaroslav@332:         }
jaroslav@332:     }
jaroslav@356:     
jaroslav@802:     private static String encodeURL(String r) throws UnsupportedEncodingException {
jaroslav@802:         final String SPECIAL = "%$&+,/:;=?@";
jaroslav@381:         StringBuilder sb = new StringBuilder();
jaroslav@802:         byte[] utf8 = r.getBytes("UTF-8");
jaroslav@802:         for (int i = 0; i < utf8.length; i++) {
jaroslav@802:             int ch = utf8[i] & 0xff;
jaroslav@802:             if (ch < 32 || ch > 127 || SPECIAL.indexOf(ch) >= 0) {
jaroslav@802:                 final String numbers = "0" + Integer.toHexString(ch);
jaroslav@802:                 sb.append("%").append(numbers.substring(numbers.length() - 2));
jaroslav@381:             } else {
jaroslav@381:                 if (ch == 32) {
jaroslav@381:                     sb.append("+");
jaroslav@381:                 } else {
jaroslav@381:                     sb.append((char)ch);
jaroslav@381:                 }
jaroslav@381:             }
jaroslav@381:         }
jaroslav@381:         return sb.toString();
jaroslav@381:     }
jaroslav@381:     
jaroslav@939:     static String invoke(String clazz, String method) throws 
jaroslav@939:     ClassNotFoundException, InvocationTargetException, IllegalAccessException, 
jaroslav@939:     InstantiationException, InterruptedException {
jaroslav@939:         final Object r = new Case(null).invokeMethod(clazz, method);
jaroslav@356:         return r == null ? "null" : r.toString().toString();
jaroslav@356:     }
jaroslav@323: 
jaroslav@360:     /** Helper method that inspects the classpath and loads given resource
jaroslav@360:      * (usually a class file). Used while running tests in Rhino.
jaroslav@360:      * 
jaroslav@360:      * @param name resource name to find
jaroslav@360:      * @return the array of bytes in the given resource
jaroslav@360:      * @throws IOException I/O in case something goes wrong
jaroslav@360:      */
jaroslav@360:     public static byte[] read(String name) throws IOException {
jaroslav@360:         URL u = null;
jaroslav@360:         Enumeration<URL> en = Console.class.getClassLoader().getResources(name);
jaroslav@360:         while (en.hasMoreElements()) {
jaroslav@360:             u = en.nextElement();
jaroslav@360:         }
jaroslav@360:         if (u == null) {
jaroslav@360:             throw new IOException("Can't find " + name);
jaroslav@360:         }
jaroslav@360:         try (InputStream is = u.openStream()) {
jaroslav@360:             byte[] arr;
jaroslav@360:             arr = new byte[is.available()];
jaroslav@360:             int offset = 0;
jaroslav@360:             while (offset < arr.length) {
jaroslav@360:                 int len = is.read(arr, offset, arr.length - offset);
jaroslav@360:                 if (len == -1) {
jaroslav@360:                     throw new IOException("Can't read " + name);
jaroslav@360:                 }
jaroslav@360:                 offset += len;
jaroslav@360:             }
jaroslav@360:             return arr;
jaroslav@360:         }
jaroslav@360:     }
jaroslav@360:    
jaroslav@517:     private static void turnAssetionStatusOn() {
jaroslav@517:     }
jaroslav@939: 
jaroslav@1041:     private static Object schedule(Runnable r, int time) {
jaroslav@1041:         return InvokeJS.CObject.call("schedule", new Run(r), time);
jaroslav@1041:     }
jaroslav@342:     
jaroslav@342:     private static final class Case {
jaroslav@342:         private final Object data;
jaroslav@939:         private Object inst;
jaroslav@342: 
jaroslav@342:         private Case(Object data) {
jaroslav@342:             this.data = data;
jaroslav@342:         }
jaroslav@342:         
jaroslav@342:         public static Case parseData(String s) {
jaroslav@342:             return new Case(toJSON(s));
jaroslav@342:         }
jaroslav@342:         
jaroslav@342:         public String getMethodName() {
jaroslav@1041:             return (String) value("methodName", data);
jaroslav@342:         }
jaroslav@342: 
jaroslav@342:         public String getClassName() {
jaroslav@1041:             return (String) value("className", data);
jaroslav@342:         }
jaroslav@342:         
jaroslav@1041:         public int getRequestId() {
jaroslav@1041:             Object v = value("request", data);
jaroslav@1041:             if (v instanceof Number) {
jaroslav@1041:                 return ((Number)v).intValue();
jaroslav@1041:             }
jaroslav@1041:             return Integer.parseInt(v.toString());
jaroslav@342:         }
jaroslav@526: 
jaroslav@526:         public String getHtmlFragment() {
jaroslav@1041:             return (String) value("html", data);
jaroslav@526:         }
jaroslav@342:         
jaroslav@916:         void again(Object[] arr) {
jaroslav@916:             try {
jaroslav@916:                 textArea = arr[0];
jaroslav@916:                 statusArea = arr[1];
jaroslav@916:                 setAttr(textArea, "value", "");
jaroslav@916:                 runTest();
jaroslav@916:             } catch (Exception ex) {
jaroslav@916:                 log(ex.getClass().getName() + ":" + ex.getMessage());
jaroslav@916:             }
jaroslav@916:         }
jaroslav@916: 
jaroslav@939:         private Object runTest() throws IllegalAccessException, 
jaroslav@939:         IllegalArgumentException, ClassNotFoundException, UnsupportedEncodingException, 
jaroslav@939:         InvocationTargetException, InstantiationException, InterruptedException {
jaroslav@916:             if (this.getHtmlFragment() != null) {
jaroslav@916:                 setAttr("bck2brwsr.fragment", "innerHTML", this.getHtmlFragment());
jaroslav@916:             }
jaroslav@916:             log("Invoking " + this.getClassName() + '.' + this.getMethodName() + " as request: " + this.getRequestId());
jaroslav@916:             Object result = invokeMethod(this.getClassName(), this.getMethodName());
jaroslav@916:             setAttr("bck2brwsr.fragment", "innerHTML", "");
jaroslav@916:             log("Result: " + result);
jaroslav@916:             result = encodeURL("" + result);
jaroslav@916:             log("Sending back: ...?request=" + this.getRequestId() + "&result=" + result);
jaroslav@916:             return result;
jaroslav@916:         }
jaroslav@939: 
jaroslav@939:         private Object invokeMethod(String clazz, String method)
jaroslav@939:         throws ClassNotFoundException, InvocationTargetException,
jaroslav@939:         InterruptedException, IllegalAccessException, IllegalArgumentException,
jaroslav@939:         InstantiationException {
jaroslav@939:             Method found = null;
jaroslav@939:             Class<?> c = Class.forName(clazz);
jaroslav@939:             for (Method m : c.getMethods()) {
jaroslav@939:                 if (m.getName().equals(method)) {
jaroslav@939:                     found = m;
jaroslav@939:                 }
jaroslav@939:             }
jaroslav@939:             Object res;
jaroslav@939:             if (found != null) {
jaroslav@939:                 try {
jaroslav@939:                     if ((found.getModifiers() & Modifier.STATIC) != 0) {
jaroslav@939:                         res = found.invoke(null);
jaroslav@939:                     } else {
jaroslav@939:                         if (inst == null) {
jaroslav@939:                             inst = c.newInstance();
jaroslav@939:                         }
jaroslav@939:                         res = found.invoke(inst);
jaroslav@939:                     }
jaroslav@939:                 } catch (Throwable ex) {
jaroslav@939:                     if (ex instanceof InvocationTargetException) {
jaroslav@939:                         ex = ((InvocationTargetException) ex).getTargetException();
jaroslav@939:                     }
jaroslav@939:                     if (ex instanceof InterruptedException) {
jaroslav@939:                         throw (InterruptedException)ex;
jaroslav@939:                     }
jaroslav@939:                     res = ex.getClass().getName() + ":" + ex.getMessage();
jaroslav@939:                 }
jaroslav@939:             } else {
jaroslav@939:                 res = "Can't find method " + method + " in " + clazz;
jaroslav@939:             }
jaroslav@939:             return res;
jaroslav@939:         }
jaroslav@916:         
jaroslav@1041:         private static Object toJSON(String s) {
jaroslav@1041:             return InvokeJS.CObject.call("toJSON", s);
jaroslav@1041:         }
jaroslav@342:         
jaroslav@1041:         private static Object value(String p, Object d) {
jaroslav@1041:             return ((JSObject)d).getMember(p);
jaroslav@1041:         }
jaroslav@342:     }
jaroslav@1041:     
jaroslav@1041:     private static String safe(String txt) {
jaroslav@1041:         return "try {" + txt + "} catch (err) { alert(err); }";
jaroslav@1041:     }
jaroslav@1041:     
jaroslav@1041:     static {
jaroslav@1041:         turnAssetionStatusOn();
jaroslav@1041:     }
jaroslav@1041:     
jaroslav@1041:     private static final class InvokeJS {
jaroslav@1041:         static final JSObject CObject = initJS();
jaroslav@1041: 
jaroslav@1041:         private static JSObject initJS() {
jaroslav@1041:             WebEngine web = (WebEngine) System.getProperties().get("webEngine");
jaroslav@1041:             return (JSObject) web.executeScript("(function() {"
jaroslav@1041:                 + "var CObject = {};"
jaroslav@1041: 
jaroslav@1041:                 + "CObject.getAttr = function(elem, attr) { return elem[attr].toString(); };"
jaroslav@1041: 
jaroslav@1041:                 + "CObject.setAttrId = function(id, attr, value) { window.document.getElementById(id)[attr] = value; };"
jaroslav@1041:                 + "CObject.setAttr = function(elem, attr, value) { elem[attr] = value; };"
jaroslav@1041: 
jaroslav@1041:                 + "CObject.beginTest = function(test, c, arr) {" + safe(BEGIN_TEST) + "};"
jaroslav@1041: 
jaroslav@1041:                 + "CObject.loadText = function(url, callback, arr) {" + safe(LOAD_TEXT.replace("run__V", "run")) + "};"
jaroslav@1041: 
jaroslav@1041:                 + "CObject.schedule = function(r, time) { return window.setTimeout(function() { r.run(); }, time); };"
jaroslav@1041: 
jaroslav@1041:                 + "CObject.toJSON = function(s) { return eval('(' + s + ')'); };"
jaroslav@1041: 
jaroslav@1041:                 + "return CObject;"
jaroslav@1041:             + "})(this)");
jaroslav@1041:         }
jaroslav@1041:     }
jaroslav@1041:     
jaroslav@323: }