org.apidesign.bck2brwsr.launcher.fximpl.Console Maven / Gradle / Ivy
/**
* Back 2 Browser Bytecode Translator
* Copyright (C) 2012-2015 Jaroslav Tulach
*
* 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.fximpl;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.net.URL;
import java.util.Enumeration;
import net.java.html.js.JavaScriptBody;
import netscape.javascript.JSObject;
/**
*
* @author Jaroslav Tulach
*/
public final class Console {
public Console() {
}
@JavaScriptBody(args = { "elem", "attr" }, body = "return elem[attr].toString();")
private static native Object getAttr(Object elem, String attr);
@JavaScriptBody(args = { "id", "attr", "value" }, body = "\n"
+ "var e = window.document.getElementById(id);\n"
+ "if (e) e[attr] = value;\n"
)
private static native void setAttr(String id, String attr, Object value);
@JavaScriptBody(args = { "elem", "attr", "value" }, body = "elem[attr] = value;")
private static native void setAttr(Object elem, String attr, Object value);
@JavaScriptBody(args = {}, body = "return new Date().getTime()")
private static native double getTime();
private static void closeWindow() {}
private static Object textArea;
private static Object statusArea;
private static void log(String newText) {
if (textArea == null) {
return;
}
String attr = "value";
setAttr(textArea, attr, getAttr(textArea, attr) + "\n" + newText);
setAttr(textArea, "scrollTop", getAttr(textArea, "scrollHeight"));
}
private static void beginTest(Case c) {
Object[] arr = beginTest(c.getClassName() + "." + c.getMethodName(), c, new Object[2]);
textArea = arr[0];
statusArea = arr[1];
}
private static void finishTest(Case c, Object res) {
if ("null".equals(res)) {
setAttr(statusArea, "innerHTML", "Success");
} else {
setAttr(statusArea, "innerHTML", "Result " + res);
}
statusArea = null;
textArea = null;
}
@JavaScriptBody(args = { "test", "c", "arr" }, body =
"var ul = window.document.getElementById('bck2brwsr.result');\n"
+ "var li = window.document.createElement('li');\n"
+ "var span = window.document.createElement('span');"
+ "span.innerHTML = test + ' - ';\n"
+ "var details = window.document.createElement('a');\n"
+ "details.innerHTML = 'Details';\n"
+ "details.href = '#';\n"
+ "var p = window.document.createElement('p');\n"
+ "var status = window.document.createElement('a');\n"
+ "status.innerHTML = 'running';"
+ "details.onclick = function() { li.appendChild(p); li.removeChild(details); status.innerHTML = 'Run Again'; status.href = '#'; };\n"
+ "status.onclick = function() { c.again(arr); }\n"
+ "var pre = window.document.createElement('textarea');\n"
+ "pre.cols = 100;"
+ "pre.rows = 10;"
+ "li.appendChild(span);\n"
+ "li.appendChild(status);\n"
+ "var span = window.document.createElement('span');"
+ "span.innerHTML = ' ';\n"
+ "li.appendChild(span);\n"
+ "li.appendChild(details);\n"
+ "p.appendChild(pre);\n"
+ "if (ul) ul.appendChild(li);\n"
+ "arr[0] = pre;\n"
+ "arr[1] = status;\n"
+ "return arr;"
)
private static native Object[] beginTest(String test, Case c, Object[] arr);
@JavaScriptBody(args = { "url", "callback" }, javacall = true, body =
"var request = new XMLHttpRequest();\n"
+ "request.open('GET', url, true);\n"
+ "request.setRequestHeader('Content-Type', 'text/plain; charset=utf-8');\n"
+ "request.onreadystatechange = function() {\n"
+ " if (this.readyState!==4) return;\n"
+ " try {\n"
+ " [email protected]::onMessage(Ljava/lang/String;)(this.responseText);\n"
+ " } catch (e) { alert(e); }\n"
+ "};\n"
+ "request.send();\n"
)
private static native void loadText(String url, OnMessage callback) throws IOException;
public static void runHarness(String url) throws IOException {
new Console().harness(url);
}
public void harness(String url) throws IOException {
log("Connecting to " + url);
Request r = new Request(url);
}
private static class Request implements Runnable, OnMessage {
private final String[] arr = { null };
private final String url;
private Case c;
private int retries;
private Request(String url) throws IOException {
this.url = url;
loadText(url, this);
}
private Request(String url, String u) throws IOException {
this.url = url;
loadText(u, this);
}
@Override
public void onMessage(String msg) {
arr[0] = msg;
run();
}
@Override
public void run() {
Thread.currentThread().setContextClassLoader(getClass().getClassLoader());
try {
if (c == null) {
String data = arr[0];
if (data == null) {
log("Some error exiting");
closeWindow();
return;
}
if (data.isEmpty()) {
log("No data, exiting");
closeWindow();
return;
}
c = Case.parseData(data);
beginTest(c);
log("Got \"" + data + "\"");
} else {
log("Processing \"" + arr[0] + "\" for " + retries + " time");
}
Object result = retries++ >= 100 ? "java.lang.InterruptedException:timeout(" + retries + ")" : c.runTest();
String reply = "?request=" + c.getRequestId() + "&time=" + c.time + "&result=" + result;
log("Sending back: ..." + reply);
finishTest(c, result);
String u = url + reply;
new Request(url, u);
} catch (Exception ex) {
if (ex instanceof InterruptedException) {
log("Re-scheduling in 100ms");
schedule(this, 100);
return;
}
log(ex.getClass().getName() + ":" + ex.getMessage());
}
}
}
private static String encodeURL(String r) throws UnsupportedEncodingException {
final String SPECIAL = "%$&+,/:;=?@";
StringBuilder sb = new StringBuilder();
byte[] utf8 = r.getBytes("UTF-8");
for (int i = 0; i < utf8.length; i++) {
int ch = utf8[i] & 0xff;
if (ch < 32 || ch > 127 || SPECIAL.indexOf(ch) >= 0) {
final String numbers = "0" + Integer.toHexString(ch);
sb.append("%").append(numbers.substring(numbers.length() - 2));
} else {
if (ch == 32) {
sb.append("+");
} else {
sb.append((char)ch);
}
}
}
return sb.toString();
}
static String invoke(String clazz, String method) throws
ClassNotFoundException, InvocationTargetException, IllegalAccessException,
InstantiationException, InterruptedException {
final Object r = new Case(null).invokeMethod(clazz, method);
return r == null ? "null" : r.toString().toString();
}
/** Helper method that inspects the classpath and loads given resource
* (usually a class file). Used while running tests in Rhino.
*
* @param name resource name to find
* @return the array of bytes in the given resource
* @throws IOException I/O in case something goes wrong
*/
public static byte[] read(String name) throws IOException {
URL u = null;
Enumeration en = Console.class.getClassLoader().getResources(name);
while (en.hasMoreElements()) {
u = en.nextElement();
}
if (u == null) {
throw new IOException("Can't find " + name);
}
InputStream is = null;
try {
is = u.openStream();
byte[] arr;
arr = new byte[is.available()];
int offset = 0;
while (offset < arr.length) {
int len = is.read(arr, offset, arr.length - offset);
if (len == -1) {
throw new IOException("Can't read " + name);
}
offset += len;
}
return arr;
} finally {
if (is != null) is.close();
}
}
private static void turnAssetionStatusOn() {
}
@JavaScriptBody(args = { "r", "time" }, javacall = true, body =
"return window.setTimeout(function() { "
+ "[email protected]::run()(); "
+ "}, time);"
)
private static native Object schedule(Runnable r, int time);
private static final class Case {
private final Object data;
private double time;
private Object inst;
private Case(Object data) {
this.data = data;
}
public static Case parseData(String s) {
return new Case(toJSON(s));
}
public String getMethodName() {
return (String) value("methodName", data);
}
public String getClassName() {
return (String) value("className", data);
}
public int getRequestId() {
Object v = value("request", data);
if (v instanceof Number) {
return ((Number)v).intValue();
}
return Integer.parseInt(v.toString());
}
public String getHtmlFragment() {
return (String) value("html", data);
}
void again(Object[] arr) {
try {
textArea = arr[0];
statusArea = arr[1];
setAttr(textArea, "value", "");
runTest();
} catch (Exception ex) {
log(ex.getClass().getName() + ":" + ex.getMessage());
}
}
private Object runTest() throws IllegalAccessException,
IllegalArgumentException, ClassNotFoundException, UnsupportedEncodingException,
InvocationTargetException, InstantiationException, InterruptedException {
if (this.getHtmlFragment() != null) {
setAttr("bck2brwsr.fragment", "innerHTML", this.getHtmlFragment());
}
log("Invoking " + this.getClassName() + '.' + this.getMethodName() + " as request: " + this.getRequestId());
Object result = invokeMethod(this.getClassName(), this.getMethodName());
setAttr("bck2brwsr.fragment", "innerHTML", "");
log("Result: " + result);
log("Time: " + time + " ms");
result = encodeURL("" + result);
return result;
}
private Object invokeMethod(String clazz, String method)
throws ClassNotFoundException, InvocationTargetException,
InterruptedException, IllegalAccessException, IllegalArgumentException,
InstantiationException {
Method found = null;
Class c = Class.forName(clazz);
for (Method m : c.getMethods()) {
if (m.getName().equals(method)) {
found = m;
}
}
Object res;
if (found != null) {
try {
if ((found.getModifiers() & Modifier.STATIC) != 0) {
res = found.invoke(null);
} else {
if (inst == null) {
inst = c.newInstance();
}
double now = getTime();
res = found.invoke(inst);
double took = Math.round(getTime() - now);
time += took;
log("Execution took " + took + " ms");
}
} catch (Throwable ex) {
if (ex instanceof InvocationTargetException) {
ex = ((InvocationTargetException) ex).getTargetException();
}
if (ex instanceof InterruptedException) {
throw (InterruptedException)ex;
}
res = ex.getClass().getName() + ":" + ex.getMessage();
}
} else {
res = "Can't find method " + method + " in " + clazz;
}
return res;
}
@JavaScriptBody(args = { "s" }, body = "return eval('(' + s + ')');")
private static native Object toJSON(String s);
private static Object value(String p, Object d) {
return ((JSObject)d).getMember(p);
}
}
static {
turnAssetionStatusOn();
}
}
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