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/*******************************************************************************
* Copyright (c) 2009 Tasktop Technologies 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:
* Tasktop Technologies - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.internal.p2.discovery.compatibility;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.PropertyResourceBundle;
import java.util.ResourceBundle;
import java.util.jar.JarFile;
import java.util.zip.ZipEntry;
import org.eclipse.core.runtime.IContributor;
import org.eclipse.core.runtime.IExtensionRegistry;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.spi.IDynamicExtensionRegistry;
import org.eclipse.core.runtime.spi.RegistryContributor;
import org.eclipse.core.runtime.spi.RegistryStrategy;
import org.eclipse.equinox.internal.p2.core.helpers.LogHelper;
import org.eclipse.equinox.internal.p2.discovery.DiscoveryCore;
import org.eclipse.equinox.internal.p2.discovery.compatibility.Directory.Entry;
import org.eclipse.osgi.util.NLS;
import org.osgi.framework.Bundle;
/**
* @author David Green
*/
class DiscoveryRegistryStrategy extends RegistryStrategy {
private final List<JarFile> jars = new ArrayList<JarFile>();
private final Map<IContributor, File> contributorToJarFile = new HashMap<IContributor, File>();
private final Map<IContributor, Entry> contributorToDirectoryEntry = new HashMap<IContributor, Entry>();
private final Object token;
private Map<File, Entry> bundleFileToDirectoryEntry;
public DiscoveryRegistryStrategy(File[] storageDirs, boolean[] cacheReadOnly, Object token) {
super(storageDirs, cacheReadOnly);
this.token = token;
}
@Override
public void onStart(IExtensionRegistry registry, boolean loadedFromCache) {
super.onStart(registry, loadedFromCache);
if (!loadedFromCache) {
processDiscoveryCoreBundle(registry);
processBundles(registry);
}
}
private void processDiscoveryCoreBundle(IExtensionRegistry registry) {
// we must add a contribution from the core bundle so that we get the
// extension point itself
try {
Bundle bundle = Platform.getBundle("org.eclipse.equinox.p2.discovery.compatiblity"); //$NON-NLS-1$
IContributor contributor = new RegistryContributor(bundle.getSymbolicName(), bundle.getSymbolicName(), null, null);
InputStream inputStream = bundle.getEntry("plugin.xml").openStream(); //$NON-NLS-1$
try {
registry.addContribution(inputStream, contributor, false, bundle.getSymbolicName(), null, token);
} finally {
inputStream.close();
}
} catch (IOException e) {
throw new IllegalStateException();
}
}
private void processBundles(IExtensionRegistry registry) {
if (bundleFileToDirectoryEntry == null) {
throw new IllegalStateException();
}
for (java.util.Map.Entry<File, Entry> bundleFile : bundleFileToDirectoryEntry.entrySet()) {
try {
processBundle(registry, bundleFile.getValue(), bundleFile.getKey());
} catch (Exception e) {
LogHelper.log(new Status(IStatus.ERROR, DiscoveryCore.ID_PLUGIN, NLS.bind(Messages.DiscoveryRegistryStrategy_cannot_load_bundle, new Object[] {bundleFile.getKey().getName(), bundleFile.getValue().getLocation(), e.getMessage()}), e));
}
}
}
private void processBundle(IExtensionRegistry registry, Directory.Entry entry, File bundleFile) throws IOException {
JarFile jarFile = new JarFile(bundleFile);
jars.add(jarFile);
ZipEntry pluginXmlEntry = jarFile.getEntry("plugin.xml"); //$NON-NLS-1$
if (pluginXmlEntry == null) {
throw new IOException(Messages.DiscoveryRegistryStrategy_missing_pluginxml);
}
IContributor contributor = new RegistryContributor(bundleFile.getName(), bundleFile.getName(), null, null);
if (((IDynamicExtensionRegistry) registry).hasContributor(contributor)) {
jarFile.close();
return;
}
contributorToJarFile.put(contributor, bundleFile);
contributorToDirectoryEntry.put(contributor, entry);
ResourceBundle translationBundle = loadTranslationBundle(jarFile);
InputStream inputStream = jarFile.getInputStream(pluginXmlEntry);
try {
registry.addContribution(inputStream, contributor, false, bundleFile.getPath(), translationBundle, token);
} finally {
inputStream.close();
}
}
private ResourceBundle loadTranslationBundle(JarFile jarFile) throws IOException {
List<String> bundleNames = computeBundleNames("plugin"); //$NON-NLS-1$
for (String bundleName : bundleNames) {
ZipEntry entry = jarFile.getEntry(bundleName);
if (entry != null) {
InputStream inputStream = jarFile.getInputStream(entry);
try {
PropertyResourceBundle resourceBundle = new PropertyResourceBundle(inputStream);
return resourceBundle;
} finally {
inputStream.close();
}
}
}
return null;
}
private List<String> computeBundleNames(String baseName) {
String suffix = ".properties"; //$NON-NLS-1$
String name = baseName;
List<String> bundleNames = new ArrayList<String>();
Locale locale = Locale.getDefault();
bundleNames.add(name + suffix);
if (locale.getLanguage() != null && locale.getLanguage().length() > 0) {
name = name + '_' + locale.getLanguage();
bundleNames.add(0, name + suffix);
}
if (locale.getCountry() != null && locale.getCountry().length() > 0) {
name = name + '_' + locale.getCountry();
bundleNames.add(0, name + suffix);
}
if (locale.getVariant() != null && locale.getVariant().length() > 0) {
name = name + '_' + locale.getVariant();
bundleNames.add(0, name + suffix);
}
return bundleNames;
}
@Override
public void onStop(IExtensionRegistry registry) {
try {
super.onStop(registry);
} finally {
for (JarFile jar : jars) {
try {
jar.close();
} catch (Exception e) {
}
}
jars.clear();
}
}
/**
* get the jar file that corresponds to the given contributor.
*
* @throws IllegalArgumentException
* if the given contributor is unknown
*/
public File getJarFile(IContributor contributor) {
File file = contributorToJarFile.get(contributor);
if (file == null) {
throw new IllegalArgumentException(contributor.getName());
}
return file;
}
/**
* get the directory entry that corresponds to the given contributor.
*
* @throws IllegalArgumentException
* if the given contributor is unknown
*/
public Entry getDirectoryEntry(IContributor contributor) {
Entry entry = contributorToDirectoryEntry.get(contributor);
if (entry == null) {
throw new IllegalArgumentException(contributor.getName());
}
return entry;
}
public void setBundles(Map<File, Entry> bundleFileToDirectoryEntry) {
this.bundleFileToDirectoryEntry = bundleFileToDirectoryEntry;
}
}
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