ui/org.eclipse.pde.core/src/org/eclipse/pde/internal/core/MinimalState.java - pde/eclipse.pde.ui - Git at Google

 /*******************************************************************************
  * Copyright (c) 2005 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.pde.internal.core;

 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.FilenameFilter;
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.URL;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Comparator;
 import java.util.Dictionary;
 import java.util.Enumeration;
 import java.util.Iterator;
 import java.util.Properties;
 import java.util.jar.Attributes;
 import java.util.jar.JarFile;
 import java.util.jar.Manifest;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipFile;

 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.MultiStatus;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.core.runtime.Platform;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.osgi.service.pluginconversion.PluginConversionException;
 import org.eclipse.osgi.service.pluginconversion.PluginConverter;
 import org.eclipse.osgi.service.resolver.BundleDescription;
 import org.eclipse.osgi.service.resolver.BundleSpecification;
 import org.eclipse.osgi.service.resolver.HostSpecification;
 import org.eclipse.osgi.service.resolver.ImportPackageSpecification;
 import org.eclipse.osgi.service.resolver.State;
 import org.eclipse.osgi.service.resolver.StateDelta;
 import org.eclipse.osgi.service.resolver.StateHelper;
 import org.eclipse.osgi.service.resolver.StateObjectFactory;
 import org.eclipse.osgi.service.resolver.VersionConstraint;
 import org.eclipse.osgi.service.resolver.VersionRange;
 import org.eclipse.pde.core.plugin.IPluginModelBase;
 import org.osgi.framework.BundleException;
 import org.osgi.framework.Constants;
 import org.osgi.util.tracker.ServiceTracker;

 public class MinimalState {

 	protected State fState;

 	private String fTargetMode = null;

 	protected long fId;

 	private PluginConverter fConverter = null;

 	private boolean fJavaProfileChanged = false; // indicates that the java
 													// profile has changed

 	private String fJavaProfile; // the currently selected java profile

 	private String[] fJavaProfiles; // the list of available java profiles

 	private static final String SYSTEM_BUNDLE = "org.eclipse.osgi"; //$NON-NLS-1$

 	protected static boolean DEBUG = false;

 	protected static StateObjectFactory stateObjectFactory;

 	protected static String DIR;

 	static {
 		DEBUG = PDECore.getDefault().isDebugging()
 				&& "true".equals(Platform.getDebugOption("org.eclipse.pde.core/cache")); //$NON-NLS-1$ //$NON-NLS-2$
 		DIR = PDECore.getDefault().getStateLocation().toOSString();
 		stateObjectFactory = Platform.getPlatformAdmin().getFactory();
 	}

 	public MinimalState() {
 		fState = stateObjectFactory.createState();
 		fState.setResolver(Platform.getPlatformAdmin().getResolver());
         fState.setPlatformProperties(TargetPlatform.getTargetEnvironment());
 	}

 	public void addBundle(IPluginModelBase model, boolean update) {
 		BundleDescription desc = model.getBundleDescription();
 		long bundleId = desc == null || !update ? -1 : desc.getBundleId();
 		try {
 			model.setBundleDescription(
 					addBundle(new File(model.getInstallLocation()), false,  bundleId));
 		} catch (PluginConversionException e) {
 		} catch (CoreException e) {
 			PDECore.log(e);
 		}
 	}

 	public void addBundle(IPluginModelBase model, long bundleId) {
 		try {
 			addBundle(new File(model.getInstallLocation()), false, -1);
 		} catch (PluginConversionException e) {
 		} catch (CoreException e) {
 		}
 	}

 	public BundleDescription addBundle(Dictionary manifest, File bundleLocation, boolean keepLibraries, long bundleId) {
 		try {
 			BundleDescription descriptor = stateObjectFactory.createBundleDescription(
 					fState, manifest, bundleLocation.getAbsolutePath(),
 					bundleId == -1 ? getNextId() : bundleId);
 			// new bundle
 			if (bundleId == -1) {
 				fState.addBundle(descriptor);
 			} else if (!fState.updateBundle(descriptor)) {
 				fState.addBundle(descriptor);
 			}
 			return descriptor;
 		} catch (BundleException e) {
 		} catch (NumberFormatException e) {
 		}
 		return null;
 	}

 	public BundleDescription addBundle(File bundleLocation, boolean keepLibraries, long bundleId) throws PluginConversionException, CoreException {
 		Dictionary manifest = loadManifest(bundleLocation);
 		if (manifest == null || manifest.get(Constants.BUNDLE_SYMBOLICNAME) == null) {
 			if (!bundleLocation.isFile()
 					&& !new File(bundleLocation, "plugin.xml").exists() //$NON-NLS-1$
 					&& !new File(bundleLocation, "fragment.xml").exists()) //$NON-NLS-1$
 				return null;
 			PluginConverter converter = acquirePluginConverter();
 			manifest = converter.convertManifest(bundleLocation, false, getTargetMode(), false, null);
 			if (manifest == null
 					|| manifest.get(Constants.BUNDLE_SYMBOLICNAME) == null)
 				throw new CoreException(new Status(
 						IStatus.ERROR,
 						PDECore.PLUGIN_ID,
 						IStatus.ERROR,
 						"Error parsing plug-in manifest file at " + bundleLocation.toString(), null)); //$NON-NLS-1$
 		}
 		BundleDescription desc = addBundle(manifest, bundleLocation, keepLibraries, bundleId);
 		if (desc != null && SYSTEM_BUNDLE.equals(desc.getSymbolicName())) {
 			// if this is the system bundle then reset the java profile and
 			// indicate that the javaProfile has changed
 			setJavaProfiles(bundleLocation);
 		}
 		return desc;
 	}

 	protected void saveState(File dir) {
 		saveState(fState, dir);
 	}

 	protected void saveState(State state, File dir) {
 		try {
 			if (!dir.exists())
 				dir.mkdirs();
 			stateObjectFactory.writeState(state, dir);
 		} catch (FileNotFoundException e) {
 			PDECore.log(e);
 		} catch (IOException e) {
 			PDECore.log(e);
 		} finally {
 		}
 	}

 	private Dictionary loadManifest(File bundleLocation) {
 		ZipFile jarFile = null;
 		InputStream manifestStream = null;
 		try {
 			String extension = new Path(bundleLocation.getName()).getFileExtension();
 			if (extension != null && extension.equals("jar") && bundleLocation.isFile()) { //$NON-NLS-1$
 				jarFile = new ZipFile(bundleLocation, ZipFile.OPEN_READ);
 				ZipEntry manifestEntry = jarFile.getEntry(JarFile.MANIFEST_NAME);
 				if (manifestEntry != null) {
 					manifestStream = jarFile.getInputStream(manifestEntry);
 				}
 			} else {
 				File file = new File(bundleLocation, JarFile.MANIFEST_NAME);
 				if (file.exists())
 					manifestStream = new FileInputStream(file);
 			}
 		} catch (IOException e) {
 		}
 		if (manifestStream == null)
 			return null;
 		try {
 			Manifest m = new Manifest(manifestStream);
 			return manifestToProperties(m.getMainAttributes());
 		} catch (IOException e) {
 			PDECore.log(new Status(IStatus.ERROR, PDECore.PLUGIN_ID, IStatus.ERROR,
 					PDECoreMessages.PDEState_invalidFormat + bundleLocation.toString(),
 					null)); //$NON-NLS-1$
 			return null;
 		} finally {
 			try {
 				manifestStream.close();
 			} catch (IOException e1) {
 			}
 			try {
 				if (jarFile != null)
 					jarFile.close();
 			} catch (IOException e2) {
 			}
 		}
 	}

 	private Properties manifestToProperties(Attributes d) {
 		Iterator iter = d.keySet().iterator();
 		Properties result = new Properties();
 		while (iter.hasNext()) {
 			Attributes.Name key = (Attributes.Name) iter.next();
 			result.put(key.toString(), d.get(key));
 		}
 		return result;
 	}

 	public void resolveState(boolean incremental) {
 		internalResolveState(incremental);
 	}

 	private synchronized StateDelta internalResolveState(boolean incremental) {
 		if (fJavaProfile == null) {
 			fJavaProfile = getDefaultJavaProfile();
 			fJavaProfileChanged = true;
 		}
 		if (fJavaProfileChanged) {
 			incremental = !fState.setPlatformProperties(getProfilePlatformProperties());
 			fJavaProfileChanged = false;
 		}
 		return fState.resolve(incremental);
 	}

 	private Dictionary getProfilePlatformProperties() {
 		// get the target platform properties
 		Dictionary props = TargetPlatform.getTargetEnvironment();
 		// add the selected java profile
 		String profile = getJavaProfilePackages();
 		if (profile != null)
 			props.put("org.osgi.framework.system.packages", profile); //$NON-NLS-1$
 		return props;
 	}

 	private File getOSGiLocation() {
 		// return the File location of the system bundle
 		BundleDescription osgiBundle = fState.getBundle(SYSTEM_BUNDLE, null);
 		return (osgiBundle == null) ? null : new File(osgiBundle.getLocation());
 	}

 	private String getJavaProfilePackages() {
 		// returns the list of packages in the selected java profile
 		if (fJavaProfile == null)
 			return null;
 		File location = getOSGiLocation();
 		if (location == null)
 			return null;
 		InputStream is = null;
 		ZipFile zipFile = null;
 		try {
 			// find the input stream to the profile properties file
 			if (location.isDirectory()) {
 				is = new FileInputStream(new File(location, fJavaProfile));
 			} else {
 				zipFile = null;
 				try {
 					zipFile = new ZipFile(location, ZipFile.OPEN_READ);
 					ZipEntry entry = zipFile.getEntry(fJavaProfile);
 					if (entry != null)
 						is = zipFile.getInputStream(entry);
 				} catch (IOException e) {
 					// nothing to do
 				}
 			}
 			Properties profile = new Properties();
 			profile.load(is);
 			// return the value of the system packages property
 			return profile.getProperty("org.osgi.framework.system.packages"); //$NON-NLS-1$
 		} catch (IOException e) {
 			// nothing to do
 		} finally {
 			if (is != null)
 				try {
 					is.close();
 				} catch (IOException e) {
 					// nothing to do
 				}
 			if (zipFile != null)
 				try {
 					zipFile.close();
 				} catch (IOException e) {
 					// nothing to do
 				}
 		}
 		return null;
 	}

 	public String getDefaultJavaProfile() {
 		// if the java profiles list is not set then find the list
 		if (fJavaProfiles == null)
 			setJavaProfiles(getOSGiLocation());
 		// the javaProfiles list is sorted in descending order; return the first
 		// profile in the list (highest available profile)
 		if (fJavaProfiles != null && fJavaProfiles.length > 0)
 			return fJavaProfiles[0];
 		return null;
 	}

 	public void removeBundleDescription(BundleDescription description) {
 		fState.removeBundle(description);
 	}

 	public State getState() {
 		return fState;
 	}

 	protected void setTargetMode(URL[] urls) {
 		fTargetMode = ICoreConstants.TARGET21;
 		for (int i = 0; i < urls.length; i++) {
 			if (urls[i].getFile().indexOf("org.eclipse.osgi") != -1) {//$NON-NLS-1$
 				fTargetMode = null;
 				break;
 			}
 		}
 	}

 	public String getTargetMode() {
 		return fTargetMode;
 	}

 	private void setJavaProfiles(File bundleLocation) {
 		if (bundleLocation == null)
 			return;
 		if (bundleLocation.isDirectory())
 			fJavaProfiles = getDirJavaProfiles(bundleLocation);
 		else
 			fJavaProfiles = getJarJavaProfiles(bundleLocation);
 		if (fJavaProfiles != null)
 			// sort the javaProfiles in descending order
 			Arrays.sort(fJavaProfiles, new Comparator() {
 				public int compare(Object profile1, Object profile2) {
 					return -((String) profile1).compareTo(profile2);
 				}
 			});
 		// if the selected java profile is set; make sure it is still available
 		if (fJavaProfile != null) {
 			if (fJavaProfiles == null)
 				fJavaProfile = null;
 			else if (Arrays.binarySearch(fJavaProfiles, fJavaProfile) < 0)
 				fJavaProfile = null;
 		}
 		fJavaProfileChanged = true; // alway indicate the selected java profile
 									// has changed
 	}

 	private String[] getDirJavaProfiles(File bundleLocation) {
 		String[] profiles = bundleLocation.list(new FilenameFilter() {
 			public boolean accept(File dir, String name) {
 				return name.endsWith(".profile"); //$NON-NLS-1$
 			}
 		});
 		return profiles;
 	}

 	private String[] getJarJavaProfiles(File bundleLocation) {
 		ZipFile zipFile = null;
 		ArrayList results = new ArrayList(6);
 		try {
 			zipFile = new ZipFile(bundleLocation, ZipFile.OPEN_READ);
 			Enumeration entries = zipFile.entries();
 			while (entries.hasMoreElements()) {
 				String entryName = ((ZipEntry) entries.nextElement()).getName();
 				if (entryName.indexOf('/') < 0 && entryName.endsWith(".profile")) //$NON-NLS-1$
 					results.add(entryName);
 			}
 		} catch (IOException e) {
 			// nothing to do
 		} finally {
 			if (zipFile != null)
 				try {
 					zipFile.close();
 				} catch (IOException e) {
 					// nothing to do
 				}
 		}
 		return (String[]) results.toArray(new String[results.size()]);
 	}

 	public void addBundleDescription(BundleDescription toAdd) {
 		fState.addBundle(toAdd);
 	}

 	private PluginConverter acquirePluginConverter() {
 		if (fConverter == null) {
 			ServiceTracker tracker = new ServiceTracker(PDECore.getDefault()
 					.getBundleContext(), PluginConverter.class.getName(), null);
 			tracker.open();
 			fConverter = (PluginConverter) tracker.getService();
 			tracker.close();
 		}
 		return fConverter;
 	}

 	public long getNextId() {
 		return ++fId;
 	}

 	private BundleDescription findActiveBundle(String symbolicName) {
 		BundleDescription[] bundles = fState.getBundles(symbolicName);
 		for (int i = 0; i < bundles.length; i++) {
 			if (bundles[i].isResolved())
 				return bundles[i];
 		}
 		return null;
 	}

 	protected void logResolutionErrors() {
 		MultiStatus errors = new MultiStatus(PDECore.getPluginId(), 1,
 				PDECoreMessages.ExternalModelManager_scanningProblems, //$NON-NLS-1$
 				null);

 		StateHelper helper = Platform.getPlatformAdmin().getStateHelper();
 		BundleDescription[] all = fState.getBundles();
 		for (int i = 0; i < all.length; i++) {
 			if (!all[i].isResolved()) {
 				VersionConstraint[] unsatisfiedConstraints = helper
 						.getUnsatisfiedConstraints(all[i]);
 				if (unsatisfiedConstraints.length == 0) {
 					if (DEBUG) {
 						BundleDescription activeBundle = findActiveBundle(all[i]
 								.getSymbolicName());
 						String message = "Plug-in located at \"" + all[i].getLocation() + "\" was disabled because plug-in located at \"" + activeBundle.getLocation() + "\" was selected."; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
 						System.out.print(message);
 					}
 				} else {
 					for (int j = 0; j < unsatisfiedConstraints.length; j++) {
 						String message = getResolutionFailureMessage(unsatisfiedConstraints[j]);
 						if (message != null)
 							errors.add(new Status(IStatus.WARNING, all[i]
 									.getSymbolicName(), IStatus.WARNING, message, null));
 					}
 				}
 			}
 		}
 		if (errors.getChildren().length > 0)
 			PDECore.log(errors);
 	}

 	private String getResolutionFailureMessage(VersionConstraint unsatisfied) {
 		if (unsatisfied.isResolved())
 			throw new IllegalArgumentException();
 		if (unsatisfied instanceof ImportPackageSpecification)
 			return "Missing imported package: " + toString(unsatisfied); //$NON-NLS-1$
 		if (unsatisfied instanceof BundleSpecification)
 			return "Missing required plug-in: " + toString(unsatisfied); //$NON-NLS-1$
 		if (unsatisfied instanceof HostSpecification)
 			return "Missing Fragment Host: " + toString(unsatisfied); //$NON-NLS-1$
 		return null;
 	}

 	private String toString(VersionConstraint constraint) {
 		VersionRange versionRange = constraint.getVersionRange();
 		if (versionRange == null || versionRange.getMinimum() != null)
 			return constraint.getName();
 		return constraint.getName() + '_' + versionRange;
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2005 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.pde.internal.core;

	import java.io.File;
	import java.io.FileInputStream;
	import java.io.FileNotFoundException;
	import java.io.FilenameFilter;
	import java.io.IOException;
	import java.io.InputStream;
	import java.net.URL;
	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.Comparator;
	import java.util.Dictionary;
	import java.util.Enumeration;
	import java.util.Iterator;
	import java.util.Properties;
	import java.util.jar.Attributes;
	import java.util.jar.JarFile;
	import java.util.jar.Manifest;
	import java.util.zip.ZipEntry;
	import java.util.zip.ZipFile;

	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.IStatus;
	import org.eclipse.core.runtime.MultiStatus;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.core.runtime.Platform;
	import org.eclipse.core.runtime.Status;
	import org.eclipse.osgi.service.pluginconversion.PluginConversionException;
	import org.eclipse.osgi.service.pluginconversion.PluginConverter;
	import org.eclipse.osgi.service.resolver.BundleDescription;
	import org.eclipse.osgi.service.resolver.BundleSpecification;
	import org.eclipse.osgi.service.resolver.HostSpecification;
	import org.eclipse.osgi.service.resolver.ImportPackageSpecification;
	import org.eclipse.osgi.service.resolver.State;
	import org.eclipse.osgi.service.resolver.StateDelta;
	import org.eclipse.osgi.service.resolver.StateHelper;
	import org.eclipse.osgi.service.resolver.StateObjectFactory;
	import org.eclipse.osgi.service.resolver.VersionConstraint;
	import org.eclipse.osgi.service.resolver.VersionRange;
	import org.eclipse.pde.core.plugin.IPluginModelBase;
	import org.osgi.framework.BundleException;
	import org.osgi.framework.Constants;
	import org.osgi.util.tracker.ServiceTracker;

	public class MinimalState {

	protected State fState;

	private String fTargetMode = null;

	protected long fId;

	private PluginConverter fConverter = null;

	private boolean fJavaProfileChanged = false; // indicates that the java
	// profile has changed

	private String fJavaProfile; // the currently selected java profile

	private String[] fJavaProfiles; // the list of available java profiles

	private static final String SYSTEM_BUNDLE = "org.eclipse.osgi"; //$NON-NLS-1$

	protected static boolean DEBUG = false;

	protected static StateObjectFactory stateObjectFactory;

	protected static String DIR;

	static {
	DEBUG = PDECore.getDefault().isDebugging()
	&& "true".equals(Platform.getDebugOption("org.eclipse.pde.core/cache")); //$NON-NLS-1$ //$NON-NLS-2$
	DIR = PDECore.getDefault().getStateLocation().toOSString();
	stateObjectFactory = Platform.getPlatformAdmin().getFactory();
	}

	public MinimalState() {
	fState = stateObjectFactory.createState();
	fState.setResolver(Platform.getPlatformAdmin().getResolver());
	fState.setPlatformProperties(TargetPlatform.getTargetEnvironment());
	}

	public void addBundle(IPluginModelBase model, boolean update) {
	BundleDescription desc = model.getBundleDescription();
	long bundleId = desc == null \|\| !update ? -1 : desc.getBundleId();
	try {
	model.setBundleDescription(
	addBundle(new File(model.getInstallLocation()), false, bundleId));
	} catch (PluginConversionException e) {
	} catch (CoreException e) {
	PDECore.log(e);
	}
	}

	public void addBundle(IPluginModelBase model, long bundleId) {
	try {
	addBundle(new File(model.getInstallLocation()), false, -1);
	} catch (PluginConversionException e) {
	} catch (CoreException e) {
	}
	}

	public BundleDescription addBundle(Dictionary manifest, File bundleLocation, boolean keepLibraries, long bundleId) {
	try {
	BundleDescription descriptor = stateObjectFactory.createBundleDescription(
	fState, manifest, bundleLocation.getAbsolutePath(),
	bundleId == -1 ? getNextId() : bundleId);
	// new bundle
	if (bundleId == -1) {
	fState.addBundle(descriptor);
	} else if (!fState.updateBundle(descriptor)) {
	fState.addBundle(descriptor);
	}
	return descriptor;
	} catch (BundleException e) {
	} catch (NumberFormatException e) {
	}
	return null;
	}

	public BundleDescription addBundle(File bundleLocation, boolean keepLibraries, long bundleId) throws PluginConversionException, CoreException {
	Dictionary manifest = loadManifest(bundleLocation);
	if (manifest == null \|\| manifest.get(Constants.BUNDLE_SYMBOLICNAME) == null) {
	if (!bundleLocation.isFile()
	&& !new File(bundleLocation, "plugin.xml").exists() //$NON-NLS-1$
	&& !new File(bundleLocation, "fragment.xml").exists()) //$NON-NLS-1$
	return null;
	PluginConverter converter = acquirePluginConverter();
	manifest = converter.convertManifest(bundleLocation, false, getTargetMode(), false, null);
	if (manifest == null
	\|\| manifest.get(Constants.BUNDLE_SYMBOLICNAME) == null)
	throw new CoreException(new Status(
	IStatus.ERROR,
	PDECore.PLUGIN_ID,
	IStatus.ERROR,
	"Error parsing plug-in manifest file at " + bundleLocation.toString(), null)); //$NON-NLS-1$
	}
	BundleDescription desc = addBundle(manifest, bundleLocation, keepLibraries, bundleId);
	if (desc != null && SYSTEM_BUNDLE.equals(desc.getSymbolicName())) {
	// if this is the system bundle then reset the java profile and
	// indicate that the javaProfile has changed
	setJavaProfiles(bundleLocation);
	}
	return desc;
	}

	protected void saveState(File dir) {
	saveState(fState, dir);
	}

	protected void saveState(State state, File dir) {
	try {
	if (!dir.exists())
	dir.mkdirs();
	stateObjectFactory.writeState(state, dir);
	} catch (FileNotFoundException e) {
	PDECore.log(e);
	} catch (IOException e) {
	PDECore.log(e);
	} finally {
	}
	}

	private Dictionary loadManifest(File bundleLocation) {
	ZipFile jarFile = null;
	InputStream manifestStream = null;
	try {
	String extension = new Path(bundleLocation.getName()).getFileExtension();
	if (extension != null && extension.equals("jar") && bundleLocation.isFile()) { //$NON-NLS-1$
	jarFile = new ZipFile(bundleLocation, ZipFile.OPEN_READ);
	ZipEntry manifestEntry = jarFile.getEntry(JarFile.MANIFEST_NAME);
	if (manifestEntry != null) {
	manifestStream = jarFile.getInputStream(manifestEntry);
	}
	} else {
	File file = new File(bundleLocation, JarFile.MANIFEST_NAME);
	if (file.exists())
	manifestStream = new FileInputStream(file);
	}
	} catch (IOException e) {
	}
	if (manifestStream == null)
	return null;
	try {
	Manifest m = new Manifest(manifestStream);
	return manifestToProperties(m.getMainAttributes());
	} catch (IOException e) {
	PDECore.log(new Status(IStatus.ERROR, PDECore.PLUGIN_ID, IStatus.ERROR,
	PDECoreMessages.PDEState_invalidFormat + bundleLocation.toString(),
	null)); //$NON-NLS-1$
	return null;
	} finally {
	try {
	manifestStream.close();
	} catch (IOException e1) {
	}
	try {
	if (jarFile != null)
	jarFile.close();
	} catch (IOException e2) {
	}
	}
	}

	private Properties manifestToProperties(Attributes d) {
	Iterator iter = d.keySet().iterator();
	Properties result = new Properties();
	while (iter.hasNext()) {
	Attributes.Name key = (Attributes.Name) iter.next();
	result.put(key.toString(), d.get(key));
	}
	return result;
	}

	public void resolveState(boolean incremental) {
	internalResolveState(incremental);
	}

	private synchronized StateDelta internalResolveState(boolean incremental) {
	if (fJavaProfile == null) {
	fJavaProfile = getDefaultJavaProfile();
	fJavaProfileChanged = true;
	}
	if (fJavaProfileChanged) {
	incremental = !fState.setPlatformProperties(getProfilePlatformProperties());
	fJavaProfileChanged = false;
	}
	return fState.resolve(incremental);
	}

	private Dictionary getProfilePlatformProperties() {
	// get the target platform properties
	Dictionary props = TargetPlatform.getTargetEnvironment();
	// add the selected java profile
	String profile = getJavaProfilePackages();
	if (profile != null)
	props.put("org.osgi.framework.system.packages", profile); //$NON-NLS-1$
	return props;
	}

	private File getOSGiLocation() {
	// return the File location of the system bundle
	BundleDescription osgiBundle = fState.getBundle(SYSTEM_BUNDLE, null);
	return (osgiBundle == null) ? null : new File(osgiBundle.getLocation());
	}

	private String getJavaProfilePackages() {
	// returns the list of packages in the selected java profile
	if (fJavaProfile == null)
	return null;
	File location = getOSGiLocation();
	if (location == null)
	return null;
	InputStream is = null;
	ZipFile zipFile = null;
	try {
	// find the input stream to the profile properties file
	if (location.isDirectory()) {
	is = new FileInputStream(new File(location, fJavaProfile));
	} else {
	zipFile = null;
	try {
	zipFile = new ZipFile(location, ZipFile.OPEN_READ);
	ZipEntry entry = zipFile.getEntry(fJavaProfile);
	if (entry != null)
	is = zipFile.getInputStream(entry);
	} catch (IOException e) {
	// nothing to do
	}
	}
	Properties profile = new Properties();
	profile.load(is);
	// return the value of the system packages property
	return profile.getProperty("org.osgi.framework.system.packages"); //$NON-NLS-1$
	} catch (IOException e) {
	// nothing to do
	} finally {
	if (is != null)
	try {
	is.close();
	} catch (IOException e) {
	// nothing to do
	}
	if (zipFile != null)
	try {
	zipFile.close();
	} catch (IOException e) {
	// nothing to do
	}
	}
	return null;
	}

	public String getDefaultJavaProfile() {
	// if the java profiles list is not set then find the list
	if (fJavaProfiles == null)
	setJavaProfiles(getOSGiLocation());
	// the javaProfiles list is sorted in descending order; return the first
	// profile in the list (highest available profile)
	if (fJavaProfiles != null && fJavaProfiles.length > 0)
	return fJavaProfiles[0];
	return null;
	}

	public void removeBundleDescription(BundleDescription description) {
	fState.removeBundle(description);
	}

	public State getState() {
	return fState;
	}

	protected void setTargetMode(URL[] urls) {
	fTargetMode = ICoreConstants.TARGET21;
	for (int i = 0; i < urls.length; i++) {
	if (urls[i].getFile().indexOf("org.eclipse.osgi") != -1) {//$NON-NLS-1$
	fTargetMode = null;
	break;
	}
	}
	}

	public String getTargetMode() {
	return fTargetMode;
	}

	private void setJavaProfiles(File bundleLocation) {
	if (bundleLocation == null)
	return;
	if (bundleLocation.isDirectory())
	fJavaProfiles = getDirJavaProfiles(bundleLocation);
	else
	fJavaProfiles = getJarJavaProfiles(bundleLocation);
	if (fJavaProfiles != null)
	// sort the javaProfiles in descending order
	Arrays.sort(fJavaProfiles, new Comparator() {
	public int compare(Object profile1, Object profile2) {
	return -((String) profile1).compareTo(profile2);
	}
	});
	// if the selected java profile is set; make sure it is still available
	if (fJavaProfile != null) {
	if (fJavaProfiles == null)
	fJavaProfile = null;
	else if (Arrays.binarySearch(fJavaProfiles, fJavaProfile) < 0)
	fJavaProfile = null;
	}
	fJavaProfileChanged = true; // alway indicate the selected java profile
	// has changed
	}

	private String[] getDirJavaProfiles(File bundleLocation) {
	String[] profiles = bundleLocation.list(new FilenameFilter() {
	public boolean accept(File dir, String name) {
	return name.endsWith(".profile"); //$NON-NLS-1$
	}
	});
	return profiles;
	}

	private String[] getJarJavaProfiles(File bundleLocation) {
	ZipFile zipFile = null;
	ArrayList results = new ArrayList(6);
	try {
	zipFile = new ZipFile(bundleLocation, ZipFile.OPEN_READ);
	Enumeration entries = zipFile.entries();
	while (entries.hasMoreElements()) {
	String entryName = ((ZipEntry) entries.nextElement()).getName();
	if (entryName.indexOf('/') < 0 && entryName.endsWith(".profile")) //$NON-NLS-1$
	results.add(entryName);
	}
	} catch (IOException e) {
	// nothing to do
	} finally {
	if (zipFile != null)
	try {
	zipFile.close();
	} catch (IOException e) {
	// nothing to do
	}
	}
	return (String[]) results.toArray(new String[results.size()]);
	}

	public void addBundleDescription(BundleDescription toAdd) {
	fState.addBundle(toAdd);
	}

	private PluginConverter acquirePluginConverter() {
	if (fConverter == null) {
	ServiceTracker tracker = new ServiceTracker(PDECore.getDefault()
	.getBundleContext(), PluginConverter.class.getName(), null);
	tracker.open();
	fConverter = (PluginConverter) tracker.getService();
	tracker.close();
	}
	return fConverter;
	}

	public long getNextId() {
	return ++fId;
	}

	private BundleDescription findActiveBundle(String symbolicName) {
	BundleDescription[] bundles = fState.getBundles(symbolicName);
	for (int i = 0; i < bundles.length; i++) {
	if (bundles[i].isResolved())
	return bundles[i];
	}
	return null;
	}

	protected void logResolutionErrors() {
	MultiStatus errors = new MultiStatus(PDECore.getPluginId(), 1,
	PDECoreMessages.ExternalModelManager_scanningProblems, //$NON-NLS-1$
	null);

	StateHelper helper = Platform.getPlatformAdmin().getStateHelper();
	BundleDescription[] all = fState.getBundles();
	for (int i = 0; i < all.length; i++) {
	if (!all[i].isResolved()) {
	VersionConstraint[] unsatisfiedConstraints = helper
	.getUnsatisfiedConstraints(all[i]);
	if (unsatisfiedConstraints.length == 0) {
	if (DEBUG) {
	BundleDescription activeBundle = findActiveBundle(all[i]
	.getSymbolicName());
	String message = "Plug-in located at \"" + all[i].getLocation() + "\" was disabled because plug-in located at \"" + activeBundle.getLocation() + "\" was selected."; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
	System.out.print(message);
	}
	} else {
	for (int j = 0; j < unsatisfiedConstraints.length; j++) {
	String message = getResolutionFailureMessage(unsatisfiedConstraints[j]);
	if (message != null)
	errors.add(new Status(IStatus.WARNING, all[i]
	.getSymbolicName(), IStatus.WARNING, message, null));
	}
	}
	}
	}
	if (errors.getChildren().length > 0)
	PDECore.log(errors);
	}

	private String getResolutionFailureMessage(VersionConstraint unsatisfied) {
	if (unsatisfied.isResolved())
	throw new IllegalArgumentException();
	if (unsatisfied instanceof ImportPackageSpecification)
	return "Missing imported package: " + toString(unsatisfied); //$NON-NLS-1$
	if (unsatisfied instanceof BundleSpecification)
	return "Missing required plug-in: " + toString(unsatisfied); //$NON-NLS-1$
	if (unsatisfied instanceof HostSpecification)
	return "Missing Fragment Host: " + toString(unsatisfied); //$NON-NLS-1$
	return null;
	}

	private String toString(VersionConstraint constraint) {
	VersionRange versionRange = constraint.getVersionRange();
	if (versionRange == null \|\| versionRange.getMinimum() != null)
	return constraint.getName();
	return constraint.getName() + '_' + versionRange;
	}

	}