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/*******************************************************************************
* Copyright (c) 2008-2010 Sonatype, Inc.
* 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:
* Sonatype, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.m2e.core.internal;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import org.osgi.framework.Bundle;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IContributor;
import org.eclipse.core.runtime.IExtension;
import org.eclipse.core.runtime.IExtensionPoint;
import org.eclipse.core.runtime.IExtensionRegistry;
import org.eclipse.core.runtime.Platform;
import org.eclipse.m2e.core.internal.archetype.ArchetypeCatalogFactory;
import org.eclipse.m2e.core.project.IMavenProjectChangedListener;
/**
* Extension reader
*
* @author Eugene Kuleshov
*/
public class ExtensionReader {
private static final Logger log = LoggerFactory.getLogger(ExtensionReader.class);
public static final String EXTENSION_ARCHETYPES = IMavenConstants.PLUGIN_ID + ".archetypeCatalogs"; //$NON-NLS-1$
public static final String EXTENSION_PROJECT_CHANGED_EVENT_LISTENERS = IMavenConstants.PLUGIN_ID + ".mavenProjectChangedListeners"; //$NON-NLS-1$
private static final String ELEMENT_LOCAL_ARCHETYPE = "local"; //$NON-NLS-1$
private static final String ELEMENT_REMOTE_ARCHETYPE = "remote"; //$NON-NLS-1$
private static final String ATTR_NAME = "name"; //$NON-NLS-1$
private static final String ATTR_URL = "url"; //$NON-NLS-1$
private static final String ATTR_DESCRIPTION = "description"; //$NON-NLS-1$
private static final String ELEMENT_LISTENER = "listener"; //$NON-NLS-1$
public static List<ArchetypeCatalogFactory> readArchetypeExtensions() {
List<ArchetypeCatalogFactory> archetypeCatalogs = new ArrayList<ArchetypeCatalogFactory>();
IExtensionRegistry registry = Platform.getExtensionRegistry();
IExtensionPoint archetypesExtensionPoint = registry.getExtensionPoint(EXTENSION_ARCHETYPES);
if(archetypesExtensionPoint != null) {
IExtension[] archetypesExtensions = archetypesExtensionPoint.getExtensions();
for(IExtension extension : archetypesExtensions) {
IConfigurationElement[] elements = extension.getConfigurationElements();
IContributor contributor = extension.getContributor();
for(IConfigurationElement element : elements) {
ArchetypeCatalogFactory factory = readArchetypeCatalogs(element, contributor);
// archetypeManager.addArchetypeCatalogFactory(factory);
archetypeCatalogs.add(factory);
}
}
}
return archetypeCatalogs;
}
private static ArchetypeCatalogFactory readArchetypeCatalogs(IConfigurationElement element, IContributor contributor) {
if(ELEMENT_LOCAL_ARCHETYPE.equals(element.getName())) {
String name = element.getAttribute(ATTR_NAME);
if(name != null) {
Bundle[] bundles = Platform.getBundles(contributor.getName(), null);
URL catalogUrl = null;
for(int i = 0; i < bundles.length; i++ ) {
Bundle bundle = bundles[i];
catalogUrl = bundle.getEntry(name);
if(catalogUrl != null) {
String description = element.getAttribute(ATTR_DESCRIPTION);
String url = catalogUrl.toString();
// XXX ARCHETYPE-161: RemoteCatalogArchetypeDataSource don't allow to download arbitrary urls
return new ArchetypeCatalogFactory.RemoteCatalogFactory(url.substring(0, url.lastIndexOf("/")), //$NON-NLS-1$
description, false);
}
}
log.error("Unable to find Archetype catalog " + name + " in " + contributor.getName());
}
} else if(ELEMENT_REMOTE_ARCHETYPE.equals(element.getName())) {
String url = element.getAttribute(ATTR_URL);
if(url != null) {
String description = element.getAttribute(ATTR_DESCRIPTION);
return new ArchetypeCatalogFactory.RemoteCatalogFactory(url, description, false);
}
}
return null;
}
public static List<IMavenProjectChangedListener> readProjectChangedEventListenerExtentions() {
ArrayList<IMavenProjectChangedListener> listeners = new ArrayList<IMavenProjectChangedListener>();
IExtensionRegistry registry = Platform.getExtensionRegistry();
IExtensionPoint mappingsExtensionPoint = registry.getExtensionPoint(EXTENSION_PROJECT_CHANGED_EVENT_LISTENERS);
if(mappingsExtensionPoint != null) {
IExtension[] mappingsExtensions = mappingsExtensionPoint.getExtensions();
for(IExtension extension : mappingsExtensions) {
IConfigurationElement[] elements = extension.getConfigurationElements();
for(IConfigurationElement element : elements) {
if(element.getName().equals(ELEMENT_LISTENER)) {
try {
listeners.add( (IMavenProjectChangedListener) element.createExecutableExtension("class") ); //$NON-NLS-1$
} catch(CoreException ex) {
log.error(ex.getMessage(), ex);
}
}
}
}
}
return listeners;
}
}
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