org.eclipse.jdt.launching/launching/org/eclipse/jdt/internal/launching/MacInstalledJREs.java - jdt/eclipse.jdt.debug - Git at Google

 /*******************************************************************************
  * Copyright (c) 2010, 2012 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.jdt.internal.launching;

 import java.io.ByteArrayInputStream;
 import java.io.File;
 import java.io.InputStream;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;

 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.debug.core.DebugPlugin;
 import org.eclipse.debug.core.ILaunchManager;
 import org.eclipse.debug.core.Launch;
 import org.eclipse.debug.core.model.IProcess;
 import org.eclipse.debug.core.model.IStreamsProxy;

 /**
  * Searches for installed JREs on the Mac.
  */
 public class MacInstalledJREs {

 	/** The executable for 'java_home' */
 	private static final String JAVA_HOME_PLIST = "/usr/libexec/java_home"; //$NON-NLS-1$
 	/** The plist attribute describing the JRE home directory */
 	private static final String PLIST_JVM_HOME_PATH = "JVMHomePath"; //$NON-NLS-1$
 	/** The plist attribute describing the JRE name */
 	private static final String PLIST_JVM_NAME = "JVMName"; //$NON-NLS-1$
 	/** The plist attribute describing the JRE version */
 	private static final String PLIST_JVM_VERSION = "JVMVersion"; //$NON-NLS-1$
 	/**
 	 * The plist attribute describing the bundle id of the VM
 	 * @since 3.8
 	 */
 	private static final String PLIST_JVM_BUNDLE_ID = "JVMBundleID"; //$NON-NLS-1$

 	static final JREDescriptor[] NO_DESCRIPTORS = new JREDescriptor[0];

 	/**
 	 * Describes an installed JRE on MacOS
 	 */
 	public class JREDescriptor {
 		String fName;
 		File fHome;
 		String fVersion;
 		String fId;

 		/**
 		 * Constructs a new JRE descriptor
 		 *
 		 * @param home Home directory of the JRE
 		 * @param name JRE name
 		 * @param version JRE version
 		 * @param id the computed id of the JRE from the plist output
 		 */
 		public JREDescriptor(File home, String name, String version, String id) {
 			fHome = home;
 			fName = name;
 			fVersion = version;
 			fId = id;
 		}

 		/**
 		 * Returns the home installation directory for this JRE.
 		 *
 		 * @return home directory
 		 */
 		public File getHome() {
 			return fHome;
 		}

 		/**
 		 * Returns the name of the JRE.
 		 *
 		 * @return JRE name
 		 */
 		public String getName() {
 			return fName;
 		}

 		/**
 		 * Returns the version of the JRE.
 		 *
 		 * @return JRE version
 		 */
 		public String getVersion() {
 			return fVersion;
 		}

 		/**
 		 * returns the computed id of the descriptor
 		 *
 		 * @return the descriptor id
 		 * @since 3.8
 		 */
 		public String getId() {
 			return fId;
 		}

 		@Override
 		public boolean equals(Object obj) {
 			if (obj instanceof JREDescriptor) {
 				JREDescriptor jre = (JREDescriptor) obj;
 				return jre.fHome.equals(fHome) && jre.fName.equals(fName) && jre.fVersion.equals(fVersion) && fId.equals(jre.fId);
 			}
 			return false;
 		}

 		@Override
 		public int hashCode() {
 			return fHome.hashCode() + fName.hashCode() + fVersion.hashCode();
 		}
 	}

 	/**
 	 * Parses the XML output produced from "java_home -X" (see bug 325777), and return a collection
 	 * of descriptions of JRE installations.
 	 *
 	 * @return array of JRE descriptions installed in the OS
 	 * @exception CoreException if unable to parse the output or the executable does not exist
 	 */
 	public JREDescriptor[] getInstalledJREs() throws CoreException {
 		// locate the "java_home" executable
 		File java_home = new File(JAVA_HOME_PLIST);
 		if (!java_home.exists()) {
 			throw new CoreException(new Status(IStatus.WARNING, LaunchingPlugin.getUniqueIdentifier(), "The java_home executable does not exist")); //$NON-NLS-1$
 		}
 		String[] cmdLine = new String[] {JAVA_HOME_PLIST, "-X"}; //$NON-NLS-1$
 		Process p = null;
 		try {
 			p = DebugPlugin.exec(cmdLine, null);
 			IProcess process = DebugPlugin.newProcess(new Launch(null, ILaunchManager.RUN_MODE, null), p, "JRE Install Detection"); //$NON-NLS-1$
 			for (int i= 0; i < 600; i++) {
 				// Wait no more than 30 seconds (600 * 50 milliseconds)
 				if (process.isTerminated()) {
 					break;
 				}
 				try {
 					Thread.sleep(50);
 				} catch (InterruptedException e) {
 					// do nothing
 				}
 			}
 			return parseJREInfo(process);
 		} finally {
 			if (p != null) {
 				p.destroy();
 			}
 		}
 	}

 	/**
 	 * Parses the output from 'java_home -X'.
 	 *
 	 * @param process process with output from 'java_home -X'
 	 * @return array JRE descriptions installed in the OS
 	 * @exception CoreException if unable to parse the output
 	 */
 	private JREDescriptor[] parseJREInfo(IProcess process) throws CoreException {
 		IStreamsProxy streamsProxy = process.getStreamsProxy();
 		String text = null;
 		if (streamsProxy != null) {
 			text = streamsProxy.getOutputStreamMonitor().getContents();
 		}
 		if (text != null && text.length() > 0) {
 			ByteArrayInputStream stream = new ByteArrayInputStream(text.getBytes());
 			return parseJREInfo(stream);
 		}
 		return NO_DESCRIPTORS;
 	}

 	/**
 	 * Parse {@link JREDescriptor}s from the given input stream. The stream is expected to be in the
 	 * XML properties format.
 	 *
 	 * @param stream
 	 * @return the array of {@link JREDescriptor}s or an empty array never <code>null</code>
 	 * @since 3.8
 	 */
 	public JREDescriptor[] parseJREInfo(InputStream stream) {
 		try {
 			Object result = new PListParser().parse(stream);
 			if (result instanceof Object[]) {
 				Object[] maps = (Object[]) result;
 				List<JREDescriptor> jres= new ArrayList<JREDescriptor>();
 				for (int i = 0; i < maps.length; i++) {
 					Object object = maps[i];
 					if (object instanceof Map) {
 						Map<?, ?> map = (Map<?, ?>) object;
 						Object home = map.get(PLIST_JVM_HOME_PATH);
 						Object name = map.get(PLIST_JVM_NAME);
 						Object version = map.get(PLIST_JVM_VERSION);
 						if (home instanceof String && name instanceof String && version instanceof String) {
 							String ver = (String) version;
 							JREDescriptor descriptor = new JREDescriptor(new File((String)home), (String)name, (String)version, computeId(map, ver));
 							if (!jres.contains(descriptor)) { // remove duplicates
 								jres.add(descriptor);
 							}
 						}
 					}
 				}
 				return jres.toArray(new JREDescriptor[jres.size()]);
 			}
 		}
 		catch(CoreException ce) {
 			//do nothing fall through and return no descriptors
 		}
 		return NO_DESCRIPTORS;
 	}

 	/**
 	 * Tries to compute the descriptor id using the {@link #PLIST_JVM_BUNDLE_ID}. If that is not defined
 	 * we fall back to using the version.
 	 * @param map the map to look up the VM bundle version in
 	 * @param version the current version - fall-back for no VM bundle id defined
 	 * @return the id to use for the {@link JREDescriptor}
 	 * @since 3.8
 	 */
 	String computeId(Map<?, ?> map, String version) {
 		Object o = map.get(PLIST_JVM_BUNDLE_ID);
 		if(o instanceof String) {
 			return (String) o;
 		}
 		return version;
  	}
 }
	/*******************************************************************************
	* Copyright (c) 2010, 2012 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.jdt.internal.launching;

	import java.io.ByteArrayInputStream;
	import java.io.File;
	import java.io.InputStream;
	import java.util.ArrayList;
	import java.util.List;
	import java.util.Map;

	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.IStatus;
	import org.eclipse.core.runtime.Status;
	import org.eclipse.debug.core.DebugPlugin;
	import org.eclipse.debug.core.ILaunchManager;
	import org.eclipse.debug.core.Launch;
	import org.eclipse.debug.core.model.IProcess;
	import org.eclipse.debug.core.model.IStreamsProxy;

	/**
	* Searches for installed JREs on the Mac.
	*/
	public class MacInstalledJREs {

	/** The executable for 'java_home' */
	private static final String JAVA_HOME_PLIST = "/usr/libexec/java_home"; //$NON-NLS-1$
	/** The plist attribute describing the JRE home directory */
	private static final String PLIST_JVM_HOME_PATH = "JVMHomePath"; //$NON-NLS-1$
	/** The plist attribute describing the JRE name */
	private static final String PLIST_JVM_NAME = "JVMName"; //$NON-NLS-1$
	/** The plist attribute describing the JRE version */
	private static final String PLIST_JVM_VERSION = "JVMVersion"; //$NON-NLS-1$
	/**
	* The plist attribute describing the bundle id of the VM
	* @since 3.8
	*/
	private static final String PLIST_JVM_BUNDLE_ID = "JVMBundleID"; //$NON-NLS-1$

	static final JREDescriptor[] NO_DESCRIPTORS = new JREDescriptor[0];

	/**
	* Describes an installed JRE on MacOS
	*/
	public class JREDescriptor {
	String fName;
	File fHome;
	String fVersion;
	String fId;

	/**
	* Constructs a new JRE descriptor
	*
	* @param home Home directory of the JRE
	* @param name JRE name
	* @param version JRE version
	* @param id the computed id of the JRE from the plist output
	*/
	public JREDescriptor(File home, String name, String version, String id) {
	fHome = home;
	fName = name;
	fVersion = version;
	fId = id;
	}

	/**
	* Returns the home installation directory for this JRE.
	*
	* @return home directory
	*/
	public File getHome() {
	return fHome;
	}

	/**
	* Returns the name of the JRE.
	*
	* @return JRE name
	*/
	public String getName() {
	return fName;
	}

	/**
	* Returns the version of the JRE.
	*
	* @return JRE version
	*/
	public String getVersion() {
	return fVersion;
	}

	/**
	* returns the computed id of the descriptor
	*
	* @return the descriptor id
	* @since 3.8
	*/
	public String getId() {
	return fId;
	}

	@Override
	public boolean equals(Object obj) {
	if (obj instanceof JREDescriptor) {
	JREDescriptor jre = (JREDescriptor) obj;
	return jre.fHome.equals(fHome) && jre.fName.equals(fName) && jre.fVersion.equals(fVersion) && fId.equals(jre.fId);
	}
	return false;
	}

	@Override
	public int hashCode() {
	return fHome.hashCode() + fName.hashCode() + fVersion.hashCode();
	}
	}

	/**
	* Parses the XML output produced from "java_home -X" (see bug 325777), and return a collection
	* of descriptions of JRE installations.
	*
	* @return array of JRE descriptions installed in the OS
	* @exception CoreException if unable to parse the output or the executable does not exist
	*/
	public JREDescriptor[] getInstalledJREs() throws CoreException {
	// locate the "java_home" executable
	File java_home = new File(JAVA_HOME_PLIST);
	if (!java_home.exists()) {
	throw new CoreException(new Status(IStatus.WARNING, LaunchingPlugin.getUniqueIdentifier(), "The java_home executable does not exist")); //$NON-NLS-1$
	}
	String[] cmdLine = new String[] {JAVA_HOME_PLIST, "-X"}; //$NON-NLS-1$
	Process p = null;
	try {
	p = DebugPlugin.exec(cmdLine, null);
	IProcess process = DebugPlugin.newProcess(new Launch(null, ILaunchManager.RUN_MODE, null), p, "JRE Install Detection"); //$NON-NLS-1$
	for (int i= 0; i < 600; i++) {
	// Wait no more than 30 seconds (600 * 50 milliseconds)
	if (process.isTerminated()) {
	break;
	}
	try {
	Thread.sleep(50);
	} catch (InterruptedException e) {
	// do nothing
	}
	}
	return parseJREInfo(process);
	} finally {
	if (p != null) {
	p.destroy();
	}
	}
	}

	/**
	* Parses the output from 'java_home -X'.
	*
	* @param process process with output from 'java_home -X'
	* @return array JRE descriptions installed in the OS
	* @exception CoreException if unable to parse the output
	*/
	private JREDescriptor[] parseJREInfo(IProcess process) throws CoreException {
	IStreamsProxy streamsProxy = process.getStreamsProxy();
	String text = null;
	if (streamsProxy != null) {
	text = streamsProxy.getOutputStreamMonitor().getContents();
	}
	if (text != null && text.length() > 0) {
	ByteArrayInputStream stream = new ByteArrayInputStream(text.getBytes());
	return parseJREInfo(stream);
	}
	return NO_DESCRIPTORS;
	}

	/**
	* Parse {@link JREDescriptor}s from the given input stream. The stream is expected to be in the
	* XML properties format.
	*
	* @param stream
	* @return the array of {@link JREDescriptor}s or an empty array never <code>null</code>
	* @since 3.8
	*/
	public JREDescriptor[] parseJREInfo(InputStream stream) {
	try {
	Object result = new PListParser().parse(stream);
	if (result instanceof Object[]) {
	Object[] maps = (Object[]) result;
	List<JREDescriptor> jres= new ArrayList<JREDescriptor>();
	for (int i = 0; i < maps.length; i++) {
	Object object = maps[i];
	if (object instanceof Map) {
	Map<?, ?> map = (Map<?, ?>) object;
	Object home = map.get(PLIST_JVM_HOME_PATH);
	Object name = map.get(PLIST_JVM_NAME);
	Object version = map.get(PLIST_JVM_VERSION);
	if (home instanceof String && name instanceof String && version instanceof String) {
	String ver = (String) version;
	JREDescriptor descriptor = new JREDescriptor(new File((String)home), (String)name, (String)version, computeId(map, ver));
	if (!jres.contains(descriptor)) { // remove duplicates
	jres.add(descriptor);
	}
	}
	}
	}
	return jres.toArray(new JREDescriptor[jres.size()]);
	}
	}
	catch(CoreException ce) {
	//do nothing fall through and return no descriptors
	}
	return NO_DESCRIPTORS;
	}

	/**
	* Tries to compute the descriptor id using the {@link #PLIST_JVM_BUNDLE_ID}. If that is not defined
	* we fall back to using the version.
	* @param map the map to look up the VM bundle version in
	* @param version the current version - fall-back for no VM bundle id defined
	* @return the id to use for the {@link JREDescriptor}
	* @since 3.8
	*/
	String computeId(Map<?, ?> map, String version) {
	Object o = map.get(PLIST_JVM_BUNDLE_ID);
	if(o instanceof String) {
	return (String) o;
	}
	return version;
	}
	}