bundles/org.eclipse.equinox.p2.touchpoint.eclipse/src/org/eclipse/equinox/internal/p2/touchpoint/eclipse/PlatformConfigurationWrapper.java - equinox/rt.equinox.p2 - Git at Google

 /*******************************************************************************
  * Copyright (c) 2007, 2010 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.equinox.internal.p2.touchpoint.eclipse;

 import java.io.File;
 import java.net.*;
 import java.util.List;
 import org.eclipse.core.runtime.*;
 import org.eclipse.equinox.frameworkadmin.BundleInfo;
 import org.eclipse.equinox.internal.p2.update.*;
 import org.eclipse.equinox.internal.provisional.frameworkadmin.Manipulator;
 import org.eclipse.equinox.p2.core.ProvisionException;
 import org.eclipse.osgi.util.NLS;

 /**
  * 	This class provides a wrapper for reading and writing platform.xml.
  *
  * 	Only a minimal set of operations is exposed.
  */
 public class PlatformConfigurationWrapper {

 	private Configuration configuration = null;
 	private Site poolSite = null;
 	private File configFile;
 	private URI poolURI;
 	private Manipulator manipulator;

 	private static String FEATURES = "features/"; //$NON-NLS-1$

 	private static URL getOSGiInstallArea(Manipulator manipulator) {
 		final String OSGI = "org.eclipse.osgi"; //$NON-NLS-1$
 		BundleInfo[] bis = manipulator.getConfigData().getBundles();
 		String searchFor = "org.eclipse.equinox.launcher"; //$NON-NLS-1$
 		for (int i = 0; i < bis.length; i++) {
 			if (bis[i].getSymbolicName().equals(searchFor)) {
 				if (bis[i].getLocation() != null) {
 					try {
 						if (bis[i].getLocation().getScheme().equals("file")) //$NON-NLS-1$
 							return fromOSGiJarToOSGiInstallArea(bis[i].getLocation().getPath()).toURL();
 					} catch (MalformedURLException e) {
 						//do nothing
 					}
 				}
 				if (searchFor.equals(OSGI))
 					return null;
 				searchFor = OSGI;
 				i = -1;
 			}
 		}
 		return null;
 	}

 	private static File fromOSGiJarToOSGiInstallArea(String path) {
 		IPath parentFolder = new Path(path).removeLastSegments(1);
 		if (parentFolder.lastSegment().equals("plugins")) //$NON-NLS-1$
 			return parentFolder.removeLastSegments(1).toFile();
 		return parentFolder.toFile();
 	}

 	public PlatformConfigurationWrapper(File configDir, URI featurePool, Manipulator manipulator) {
 		this.configuration = null;
 		this.configFile = new File(configDir, "/org.eclipse.update/platform.xml"); //$NON-NLS-1$
 		this.poolURI = featurePool;
 		this.manipulator = manipulator;
 	}

 	private void loadDelegate() {
 		if (configuration != null)
 			return;

 		try {
 			if (configFile.exists()) {
 				configuration = Configuration.load(configFile, getOSGiInstallArea(manipulator));
 			} else {
 				configuration = new Configuration();
 			}
 		} catch (ProvisionException pe) {
 			// TODO: Make this a real message
 			throw new IllegalStateException(Messages.error_parsing_configuration);
 		}
 		if (poolURI == null)
 			throw new IllegalStateException("Error creating platform configuration. No bundle pool defined."); //$NON-NLS-1$

 		poolSite = getSite(poolURI);
 		if (poolSite == null) {
 			poolSite = createSite(poolURI, getDefaultPolicy());
 			configuration.add(poolSite);
 		}
 	}

 	/*
 	 * Return the default policy to use when creating a new site. If there are
 	 * any sites with the MANAGED-ONLY policy, then that is the default.
 	 * Otherwise the default is USER-EXCLUDE.
 	 */
 	private String getDefaultPolicy() {
 		for (Site site : configuration.getSites()) {
 			if (Site.POLICY_MANAGED_ONLY.equals(site.getPolicy()))
 				return Site.POLICY_MANAGED_ONLY;
 		}
 		return Site.POLICY_USER_EXCLUDE;
 	}

 	/*
 	 * Create and return a site object based on the given location.
 	 */
 	private Site createSite(URI location, String policy) {
 		Site result = new Site();
 		result.setUrl(location.toString());
 		result.setPolicy(policy);
 		result.setEnabled(true);
 		return result;
 	}

 	/*
 	 * Look in the configuration and return the site object whose location matches
 	 * the given URL. Return null if there is no match.
 	 */
 	private Site getSite(URI url) {
 		List<Site> sites = configuration.getSites();
 		File file = URIUtil.toFile(url);
 		for (Site nextSite : sites) {
 			try {
 				File nextFile = URIUtil.toFile(new URI(nextSite.getUrl()));
 				if (nextFile == null)
 					continue;
 				if (nextFile.equals(file))
 					return nextSite;
 			} catch (URISyntaxException e) {
 				//ignore incorrectly formed site
 			}
 		}
 		return null;
 	}

 	/*
 	 * Look in the configuration and return the site which contains the feature
 	 * with the given identifier and version. Return null if there is none.
 	 */
 	private Site getSite(String id, String version) {
 		List<Site> sites = configuration.getSites();
 		for (Site site : sites) {
 			Feature[] features = site.getFeatures();
 			for (int i = 0; i < features.length; i++) {
 				if (id.equals(features[i].getId()) && version.equals(features[i].getVersion()))
 					return site;
 			}
 		}
 		return null;
 	}

 	/*
 	 * @see org.eclipse.update.configurator.IPlatformConfiguration#createFeatureEntry(java.lang.String, java.lang.String, java.lang.String, java.lang.String, boolean, java.lang.String, java.net.URL[])
 	 */
 	public IStatus addFeatureEntry(File file, String id, String version, String pluginIdentifier, String pluginVersion, boolean primary, String application, URL[] root, String linkFile) {
 		loadDelegate();
 		if (configuration == null)
 			return new Status(IStatus.WARNING, Activator.ID, Messages.platform_config_unavailable, null);

 		URI fileURL = null;
 		File featureDir = file.getParentFile();
 		if (featureDir == null || !featureDir.getName().equals("features")) //$NON-NLS-1$
 			return new Status(IStatus.ERROR, Activator.ID, NLS.bind(Messages.parent_dir_features, file.getAbsolutePath()), null);
 		File locationDir = featureDir.getParentFile();
 		if (locationDir == null)
 			return new Status(IStatus.ERROR, Activator.ID, NLS.bind(Messages.cannot_calculate_extension_location, file.getAbsolutePath()), null);

 		fileURL = locationDir.toURI();
 		Site site = getSite(fileURL);
 		if (site == null) {
 			site = createSite(fileURL, getDefaultPolicy());
 			if (linkFile != null)
 				site.setLinkFile(linkFile);
 			configuration.add(site);
 		} else {
 			// check to see if the feature already exists in this site
 			if (site.getFeature(id, version) != null)
 				return Status.OK_STATUS;
 		}
 		Feature addedFeature = new Feature(site);
 		addedFeature.setId(id);
 		addedFeature.setVersion(version);
 		addedFeature.setUrl(makeFeatureURL(id, version));
 		addedFeature.setApplication(application);
 		addedFeature.setPluginIdentifier(pluginIdentifier);
 		addedFeature.setPluginVersion(pluginVersion);
 		addedFeature.setRoots(root);
 		addedFeature.setPrimary(primary);
 		site.addFeature(addedFeature);
 		return Status.OK_STATUS;
 	}

 	/*
 	 * @see org.eclipse.update.configurator.IPlatformConfiguration#findConfiguredFeatureEntry(java.lang.String)
 	 */
 	public IStatus removeFeatureEntry(String id, String version) {
 		loadDelegate();
 		if (configuration == null)
 			return new Status(IStatus.WARNING, Activator.ID, Messages.platform_config_unavailable, null);

 		Site site = getSite(id, version);
 		if (site == null)
 			site = poolSite;
 		site.removeFeature(makeFeatureURL(id, version));
 		// if we weren't able to remove the feature from the site because it
 		// didn't exist, then someone already did our job for us and it is ok.
 		return Status.OK_STATUS;
 	}

 	public boolean containsFeature(URI siteURI, String featureId, String featureVersion) {
 		loadDelegate();
 		if (configuration == null)
 			return false;

 		Site site = getSite(siteURI);
 		if (site == null)
 			return false;

 		return site.getFeature(featureId, featureVersion) != null;
 	}

 	/*
 	 * @see org.eclipse.update.configurator.IPlatformConfiguration#save()
 	 */
 	public void save() throws ProvisionException {
 		if (configuration != null) {
 			configFile.getParentFile().mkdirs();
 			configuration.save(configFile, getOSGiInstallArea(manipulator));
 		}
 	}

 	private static String makeFeatureURL(String id, String version) {
 		return FEATURES + id + "_" + version + "/"; //$NON-NLS-1$ //$NON-NLS-2$;
 	}

 	//	}

 }
	/*******************************************************************************
	* Copyright (c) 2007, 2010 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.equinox.internal.p2.touchpoint.eclipse;

	import java.io.File;
	import java.net.*;
	import java.util.List;
	import org.eclipse.core.runtime.*;
	import org.eclipse.equinox.frameworkadmin.BundleInfo;
	import org.eclipse.equinox.internal.p2.update.*;
	import org.eclipse.equinox.internal.provisional.frameworkadmin.Manipulator;
	import org.eclipse.equinox.p2.core.ProvisionException;
	import org.eclipse.osgi.util.NLS;

	/**
	* This class provides a wrapper for reading and writing platform.xml.
	*
	* Only a minimal set of operations is exposed.
	*/
	public class PlatformConfigurationWrapper {

	private Configuration configuration = null;
	private Site poolSite = null;
	private File configFile;
	private URI poolURI;
	private Manipulator manipulator;

	private static String FEATURES = "features/"; //$NON-NLS-1$

	private static URL getOSGiInstallArea(Manipulator manipulator) {
	final String OSGI = "org.eclipse.osgi"; //$NON-NLS-1$
	BundleInfo[] bis = manipulator.getConfigData().getBundles();
	String searchFor = "org.eclipse.equinox.launcher"; //$NON-NLS-1$
	for (int i = 0; i < bis.length; i++) {
	if (bis[i].getSymbolicName().equals(searchFor)) {
	if (bis[i].getLocation() != null) {
	try {
	if (bis[i].getLocation().getScheme().equals("file")) //$NON-NLS-1$
	return fromOSGiJarToOSGiInstallArea(bis[i].getLocation().getPath()).toURL();
	} catch (MalformedURLException e) {
	//do nothing
	}
	}
	if (searchFor.equals(OSGI))
	return null;
	searchFor = OSGI;
	i = -1;
	}
	}
	return null;
	}

	private static File fromOSGiJarToOSGiInstallArea(String path) {
	IPath parentFolder = new Path(path).removeLastSegments(1);
	if (parentFolder.lastSegment().equals("plugins")) //$NON-NLS-1$
	return parentFolder.removeLastSegments(1).toFile();
	return parentFolder.toFile();
	}

	public PlatformConfigurationWrapper(File configDir, URI featurePool, Manipulator manipulator) {
	this.configuration = null;
	this.configFile = new File(configDir, "/org.eclipse.update/platform.xml"); //$NON-NLS-1$
	this.poolURI = featurePool;
	this.manipulator = manipulator;
	}

	private void loadDelegate() {
	if (configuration != null)
	return;

	try {
	if (configFile.exists()) {
	configuration = Configuration.load(configFile, getOSGiInstallArea(manipulator));
	} else {
	configuration = new Configuration();
	}
	} catch (ProvisionException pe) {
	// TODO: Make this a real message
	throw new IllegalStateException(Messages.error_parsing_configuration);
	}
	if (poolURI == null)
	throw new IllegalStateException("Error creating platform configuration. No bundle pool defined."); //$NON-NLS-1$

	poolSite = getSite(poolURI);
	if (poolSite == null) {
	poolSite = createSite(poolURI, getDefaultPolicy());
	configuration.add(poolSite);
	}
	}

	/*
	* Return the default policy to use when creating a new site. If there are
	* any sites with the MANAGED-ONLY policy, then that is the default.
	* Otherwise the default is USER-EXCLUDE.
	*/
	private String getDefaultPolicy() {
	for (Site site : configuration.getSites()) {
	if (Site.POLICY_MANAGED_ONLY.equals(site.getPolicy()))
	return Site.POLICY_MANAGED_ONLY;
	}
	return Site.POLICY_USER_EXCLUDE;
	}

	/*
	* Create and return a site object based on the given location.
	*/
	private Site createSite(URI location, String policy) {
	Site result = new Site();
	result.setUrl(location.toString());
	result.setPolicy(policy);
	result.setEnabled(true);
	return result;
	}

	/*
	* Look in the configuration and return the site object whose location matches
	* the given URL. Return null if there is no match.
	*/
	private Site getSite(URI url) {
	List<Site> sites = configuration.getSites();
	File file = URIUtil.toFile(url);
	for (Site nextSite : sites) {
	try {
	File nextFile = URIUtil.toFile(new URI(nextSite.getUrl()));
	if (nextFile == null)
	continue;
	if (nextFile.equals(file))
	return nextSite;
	} catch (URISyntaxException e) {
	//ignore incorrectly formed site
	}
	}
	return null;
	}

	/*
	* Look in the configuration and return the site which contains the feature
	* with the given identifier and version. Return null if there is none.
	*/
	private Site getSite(String id, String version) {
	List<Site> sites = configuration.getSites();
	for (Site site : sites) {
	Feature[] features = site.getFeatures();
	for (int i = 0; i < features.length; i++) {
	if (id.equals(features[i].getId()) && version.equals(features[i].getVersion()))
	return site;
	}
	}
	return null;
	}

	/*
	* @see org.eclipse.update.configurator.IPlatformConfiguration#createFeatureEntry(java.lang.String, java.lang.String, java.lang.String, java.lang.String, boolean, java.lang.String, java.net.URL[])
	*/
	public IStatus addFeatureEntry(File file, String id, String version, String pluginIdentifier, String pluginVersion, boolean primary, String application, URL[] root, String linkFile) {
	loadDelegate();
	if (configuration == null)
	return new Status(IStatus.WARNING, Activator.ID, Messages.platform_config_unavailable, null);

	URI fileURL = null;
	File featureDir = file.getParentFile();
	if (featureDir == null \|\| !featureDir.getName().equals("features")) //$NON-NLS-1$
	return new Status(IStatus.ERROR, Activator.ID, NLS.bind(Messages.parent_dir_features, file.getAbsolutePath()), null);
	File locationDir = featureDir.getParentFile();
	if (locationDir == null)
	return new Status(IStatus.ERROR, Activator.ID, NLS.bind(Messages.cannot_calculate_extension_location, file.getAbsolutePath()), null);

	fileURL = locationDir.toURI();
	Site site = getSite(fileURL);
	if (site == null) {
	site = createSite(fileURL, getDefaultPolicy());
	if (linkFile != null)
	site.setLinkFile(linkFile);
	configuration.add(site);
	} else {
	// check to see if the feature already exists in this site
	if (site.getFeature(id, version) != null)
	return Status.OK_STATUS;
	}
	Feature addedFeature = new Feature(site);
	addedFeature.setId(id);
	addedFeature.setVersion(version);
	addedFeature.setUrl(makeFeatureURL(id, version));
	addedFeature.setApplication(application);
	addedFeature.setPluginIdentifier(pluginIdentifier);
	addedFeature.setPluginVersion(pluginVersion);
	addedFeature.setRoots(root);
	addedFeature.setPrimary(primary);
	site.addFeature(addedFeature);
	return Status.OK_STATUS;
	}

	/*
	* @see org.eclipse.update.configurator.IPlatformConfiguration#findConfiguredFeatureEntry(java.lang.String)
	*/
	public IStatus removeFeatureEntry(String id, String version) {
	loadDelegate();
	if (configuration == null)
	return new Status(IStatus.WARNING, Activator.ID, Messages.platform_config_unavailable, null);

	Site site = getSite(id, version);
	if (site == null)
	site = poolSite;
	site.removeFeature(makeFeatureURL(id, version));
	// if we weren't able to remove the feature from the site because it
	// didn't exist, then someone already did our job for us and it is ok.
	return Status.OK_STATUS;
	}

	public boolean containsFeature(URI siteURI, String featureId, String featureVersion) {
	loadDelegate();
	if (configuration == null)
	return false;

	Site site = getSite(siteURI);
	if (site == null)
	return false;

	return site.getFeature(featureId, featureVersion) != null;
	}

	/*
	* @see org.eclipse.update.configurator.IPlatformConfiguration#save()
	*/
	public void save() throws ProvisionException {
	if (configuration != null) {
	configFile.getParentFile().mkdirs();
	configuration.save(configFile, getOSGiInstallArea(manipulator));
	}
	}

	private static String makeFeatureURL(String id, String version) {
	return FEATURES + id + "_" + version + "/"; //$NON-NLS-1$ //$NON-NLS-2$;
	}

	// }

	}