| /******************************************************************************* |
| * Copyright (c) 2000, 2015 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.help.internal.standalone; |
| |
| import java.io.BufferedReader; |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.util.List; |
| |
| /** |
| * Eclipse launcher. Spawns eclipse executable or |
| * org.eclipse.core.launcher.Main. |
| */ |
| public class Eclipse extends Thread { |
| // Eclipse exit codes |
| private static final int NEEDS_RESTART = 23; |
| // Launching status |
| public static final int STATUS_INIT = 0; |
| public static final int STATUS_STARTED = 1; |
| public static final int STATUS_ERROR = 2; |
| |
| File dir; |
| String[] cmdarray; |
| private int status = STATUS_INIT; |
| private Exception exception; |
| Process pr; |
| private EclipseLifeCycleListener lifeCycleListener; |
| /** |
| * Constructor |
| */ |
| public Eclipse(EclipseLifeCycleListener listener) { |
| super(); |
| this.lifeCycleListener = listener; |
| this.setName("Eclipse"); //$NON-NLS-1$ |
| this.dir = Options.getEclipseHome(); |
| } |
| private void prepareCommand() throws Exception { |
| if (Options.useExe()) { |
| prepareEclipseCommand(); |
| ensureEclipseExeExists(); |
| } else { |
| prepareJavaCommand(); |
| } |
| ensureVmExists(); |
| } |
| private void prepareEclipseCommand() { |
| List<String> vmArgs = Options.getVmArgs(); |
| List<String> eclipseArgs = Options.getEclipseArgs(); |
| cmdarray = new String[3 + vmArgs.size() + 1 + eclipseArgs.size()]; |
| cmdarray[0] = new File(Options.getEclipseHome(), "eclipse").getAbsolutePath(); //$NON-NLS-1$ |
| cmdarray[1] = "-vm"; //$NON-NLS-1$ |
| cmdarray[2] = Options.getVm(); |
| for (int i = 0; i < eclipseArgs.size(); i++) { |
| cmdarray[3 + i] = eclipseArgs.get(i); |
| } |
| cmdarray[3 + eclipseArgs.size()] = "-vmargs"; //$NON-NLS-1$ |
| for (int i = 0; i < vmArgs.size(); i++) { |
| cmdarray[4 + eclipseArgs.size() + i] = vmArgs.get(i); |
| } |
| } |
| private void prepareJavaCommand() throws Exception { |
| List<String> vmArgs = Options.getVmArgs(); |
| List<String> eclipseArgs = Options.getEclipseArgs(); |
| cmdarray = new String[1 + vmArgs.size() + 3 + eclipseArgs.size()]; |
| cmdarray[0] = Options.getVm(); |
| for (int i = 0; i < vmArgs.size(); i++) { |
| cmdarray[1 + i] = vmArgs.get(i); |
| } |
| cmdarray[1 + vmArgs.size()] = "-cp"; //$NON-NLS-1$ |
| cmdarray[2 + vmArgs.size()] = getStartupJar(); |
| cmdarray[3 + vmArgs.size()] = "org.eclipse.core.launcher.Main"; //$NON-NLS-1$ |
| for (int i = 0; i < eclipseArgs.size(); i++) { |
| cmdarray[4 + vmArgs.size() + i] = eclipseArgs.get(i); |
| } |
| } |
| /** |
| * Launches Eclipse process and waits for it. |
| */ |
| @Override |
| public void run() { |
| try { |
| prepareCommand(); |
| if (Options.isDebug()) { |
| printCommand(); |
| } |
| do { |
| pr = Runtime.getRuntime().exec(cmdarray, (String[]) null, dir); |
| (new StreamConsumer(pr.getInputStream())).start(); |
| (new StreamConsumer(pr.getErrorStream())).start(); |
| if (status == STATUS_INIT) { |
| // started first time |
| status = STATUS_STARTED; |
| } |
| try { |
| pr.waitFor(); |
| } catch (InterruptedException e) { |
| } |
| if (Options.isDebug()) { |
| System.out |
| .println("Eclipse exited with status code " + pr.exitValue()); //$NON-NLS-1$ |
| if (pr.exitValue() == NEEDS_RESTART) { |
| System.out |
| .println("Updates are installed, Eclipse will be restarted."); //$NON-NLS-1$ |
| } |
| } |
| } while (pr.exitValue() == NEEDS_RESTART); |
| } catch (Exception exc) { |
| exception = exc; |
| status = STATUS_ERROR; |
| } finally { |
| if (status == STATUS_INIT) { |
| status = STATUS_ERROR; |
| } |
| if (status == STATUS_ERROR && exception == null) { |
| exception = new Exception("Unknown exception."); //$NON-NLS-1$ |
| } |
| lifeCycleListener.eclipseEnded(); |
| } |
| } |
| /** |
| * Reads a stream |
| */ |
| public class StreamConsumer extends Thread { |
| BufferedReader bReader; |
| public StreamConsumer(InputStream inputStream) { |
| super(); |
| this.setName("Eclipse out/err consumer"); //$NON-NLS-1$ |
| this.setDaemon(true); |
| bReader = new BufferedReader(new InputStreamReader(inputStream)); |
| } |
| @Override |
| public void run() { |
| try { |
| String line; |
| while (null != (line = bReader.readLine())) { |
| System.out.println(line); |
| } |
| bReader.close(); |
| } catch (IOException ioe) { |
| ioe.printStackTrace(); |
| } |
| } |
| } |
| private void ensureVmExists() throws Exception { |
| File vmExe = new File(Options.getVm()); |
| if (vmExe.exists() && !vmExe.isDirectory()) { |
| return; |
| } |
| vmExe = new File(Options.getVm() + ".exe"); //$NON-NLS-1$ |
| if (vmExe.exists() && !vmExe.isDirectory()) { |
| return; |
| } |
| throw new Exception("File " + vmExe.getAbsolutePath() //$NON-NLS-1$ |
| + " does not exists. Pass a correct -vm option"); //$NON-NLS-1$ |
| } |
| private void ensureEclipseExeExists() throws Exception { |
| File eclipseExe = new File(Options.getEclipseHome(), "eclipse" //$NON-NLS-1$ |
| + (System.getProperty("os.name").startsWith("Win") //$NON-NLS-1$ //$NON-NLS-2$ |
| ? ".exe" //$NON-NLS-1$ |
| : "")); //$NON-NLS-1$ |
| if (eclipseExe.exists() && !eclipseExe.isDirectory()) { |
| return; |
| } |
| throw new Exception("File " + eclipseExe.getAbsolutePath() //$NON-NLS-1$ |
| + " does not exists. Pass a correct -eclipsehome option"); //$NON-NLS-1$ |
| } |
| private String getStartupJar() throws Exception { |
| File pluginsDir = new File(Options.getEclipseHome(), "plugins/"); //$NON-NLS-1$ |
| if (!pluginsDir.exists() || !pluginsDir.isDirectory()) |
| throw new Exception("Plugins directory " + pluginsDir.getAbsolutePath() //$NON-NLS-1$ |
| + " does not exists. Pass a correct -eclipsehome option"); //$NON-NLS-1$ |
| File[] plugins = pluginsDir.listFiles(); |
| if(plugins == null) { |
| throw new IOException("Content from plugins directory '" + pluginsDir.getAbsolutePath() + "' can not be listed."); //$NON-NLS-1$ //$NON-NLS-2$ |
| } |
| for (int i = 0; i < plugins.length; i++) { |
| String file = plugins[i].getName(); |
| if (file.startsWith("org.eclipse.equinox.launcher_") && file.endsWith(".jar") && !plugins[i].isDirectory()) //$NON-NLS-1$ //$NON-NLS-2$ |
| return "plugins/" + file; //$NON-NLS-1$ |
| } |
| throw new Exception("Plugins directory " + pluginsDir.getAbsolutePath() //$NON-NLS-1$ |
| + " does not contain a valid startup jar. Pass a correct -eclipsehome option"); //$NON-NLS-1$ |
| } |
| /** |
| * @return Exception |
| */ |
| public Exception getException() { |
| return exception; |
| } |
| |
| /** |
| * @return int |
| */ |
| public int getStatus() { |
| return status; |
| } |
| private void printCommand() { |
| System.out.println("Launch command is:"); //$NON-NLS-1$ |
| for (int i = 0; i < cmdarray.length; i++) { |
| System.out.println(" " + cmdarray[i]); //$NON-NLS-1$ |
| } |
| |
| } |
| /** |
| * Forcibly kill Eclipse process. |
| */ |
| public void killProcess() { |
| if (pr != null) { |
| pr.destroy(); |
| } |
| } |
| } |