Fix eclipse-cbi#28: Add support for b3aggrcon and b3aggr files

With this commit it gets possible to includes b3aggr files
directly in a target platform definition.
This allow to express things like :
"I rely on what the amalgam project contributes to Luna"
by using :

include
"http://git.eclipse.org/c/simrel/org.eclipse.simrel.build.git/plain/amalgam.b3aggrcon"

or :
"I want the cdo version contributed for Kepler SR1"
with :
include
"http://git.eclipse.org/c/simrel/org.eclipse.simrel.build.git/plain/emf-cdo.b3aggrcon?id=KeplerSR1"

The b3aggrcon resource content is parsed on the fly
to produces instances of TargetPlatformDSL.

Known limitations :
- only the "repositories" and their children are used
( no platform filters..)
- only features and bundles are used
(no category mapping or exclusion list.)
- references within a b3aggr file are not resolved.

https://git.eclipse.org/c/simrel/org.eclipse.simrel.build.git/plain/simrel.b3aggr

Gives you nothing as all the actual contributions are in the included
*b3aggrcon files.

fr.obeo.releng.targetplatform/src/fr/obeo/releng/targetplatform/TargetPlatformRuntimeModule.java

@@ -3,39 +3,56 @@
  */
 package fr.obeo.releng.targetplatform;
 
+import org.eclipse.emf.ecore.resource.ResourceSet;
 import org.eclipse.equinox.p2.core.IProvisioningAgent;
 import org.eclipse.xtext.conversion.IValueConverterService;
 import org.eclipse.xtext.conversion.impl.AbstractIDValueConverter;
+import org.eclipse.xtext.resource.XtextResourceSet;
 
 import com.google.inject.Provider;
 
 import fr.obeo.releng.targetplatform.conversion.TargetPlatformConverter;
 import fr.obeo.releng.targetplatform.conversion.TargetPlatformIDValueConverter;
+import fr.obeo.releng.targetplatform.resource.XtextResourceSetWithB3aggrSupport;
 import fr.obeo.releng.targetplatform.util.LocationIndexBuilder;
 
 /**
- * Use this class to register components to be used at runtime / without the Equinox extension registry.
+ * Use this class to register components to be used at runtime / without the
+ * Equinox extension registry.
  */
-public class TargetPlatformRuntimeModule extends fr.obeo.releng.targetplatform.AbstractTargetPlatformRuntimeModule {
+public class TargetPlatformRuntimeModule extends
+		fr.obeo.releng.targetplatform.AbstractTargetPlatformRuntimeModule {
 
 	@Override
 	public Class<? extends IValueConverterService> bindIValueConverterService() {
 		return TargetPlatformConverter.class;
 	}
-	
+
 	public Class<? extends AbstractIDValueConverter> bindAbstractIDValueConverter() {
 		return TargetPlatformIDValueConverter.class;
 	}
-	
+
 	public Class<? extends LocationIndexBuilder> bindLocationIndexBuilder() {
 		return LocationIndexBuilder.class;
 	}
-	
+
 	public Provider<IProvisioningAgent> provideIProvisioningAgent() {
 		return new Provider<IProvisioningAgent>() {
 			public IProvisioningAgent get() {
-				return TargetPlatformBundleActivator.getInstance().getProvisioningAgent();
+				return TargetPlatformBundleActivator.getInstance()
+						.getProvisioningAgent();
 			}
 		};
 	}
+
+	@Override
+	public Class<? extends ResourceSet> bindResourceSet() {
+		return XtextResourceSetWithB3aggrSupport.class;
+	}
+
+	@Override
+	public Class<? extends XtextResourceSet> bindXtextResourceSet() {
+		return XtextResourceSetWithB3aggrSupport.class;
+	}
+
 }

fr.obeo.releng.targetplatform/src/fr/obeo/releng/targetplatform/TargetPlatformStandaloneSetup.java

@@ -2,9 +2,12 @@
 package fr.obeo.releng.targetplatform;
 
 import org.eclipse.emf.ecore.EPackage;
+import org.eclipse.emf.ecore.resource.Resource;
 
 import com.google.inject.Injector;
 
+import fr.obeo.releng.targetplatform.resource.B3AggrConResourceFactory;
+
 /**
  * Initialization support for running Xtext languages 
  * without equinox extension registry
@@ -13,6 +16,11 @@ public class TargetPlatformStandaloneSetup extends TargetPlatformStandaloneSetup
 
 	public static void doSetup() {
 		new TargetPlatformStandaloneSetup().createInjectorAndDoEMFRegistration();
+		/*
+		 * add support for b3aggr models
+		 */
+		Resource.Factory.Registry.INSTANCE.getExtensionToFactoryMap().put("b3aggrcon", new B3AggrConResourceFactory());
+		Resource.Factory.Registry.INSTANCE.getExtensionToFactoryMap().put("b3aggr", new B3AggrConResourceFactory());
 	}
 
 	@Override

fr.obeo.releng.targetplatform/src/fr/obeo/releng/targetplatform/resource/B3AggrConResourceFactory.java

@@ -0,0 +1,29 @@
+/*******************************************************************************
+ * Copyright (c) 2014 Obeo.
+ * 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:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package fr.obeo.releng.targetplatform.resource;
+
+import org.eclipse.emf.common.util.URI;
+import org.eclipse.emf.ecore.resource.Resource;
+import org.eclipse.emf.ecore.resource.Resource.Factory;
+
+public class B3AggrConResourceFactory implements Factory {
+
+	public B3AggrConResourceFactory() {
+
+
+	}
+
+	@Override
+	public Resource createResource(URI uri) {
+		return new B3AggrTargetPlatformResourceImpl(uri);
+	}
+
+}

fr.obeo.releng.targetplatform/src/fr/obeo/releng/targetplatform/resource/B3AggrSaxHandler.java

@@ -0,0 +1,74 @@
+/*******************************************************************************
+ * Copyright (c) 2014 Obeo.
+ * 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:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package fr.obeo.releng.targetplatform.resource;
+
+import java.util.Collection;
+import java.util.Set;
+import java.util.Stack;
+
+import org.xml.sax.Attributes;
+import org.xml.sax.SAXException;
+import org.xml.sax.helpers.DefaultHandler;
+
+import com.google.common.collect.Sets;
+
+import fr.obeo.releng.targetplatform.IU;
+import fr.obeo.releng.targetplatform.Location;
+import fr.obeo.releng.targetplatform.TargetPlatformFactory;
+
+public class B3AggrSaxHandler extends DefaultHandler {
+
+	private Stack<Location> locations = new Stack<Location>();
+
+	private Set<Location> popedLocations = Sets.newLinkedHashSet();
+
+	@Override
+	public void startElement(String uri, String localName, String qName,
+			Attributes attributes) throws SAXException {
+		super.startElement(uri, localName, qName, attributes);
+		if ("repositories".equals(qName)) {
+			String locationURI = attributes.getValue("location");
+			if (locationURI != null) {
+				Location newLocation = TargetPlatformFactory.eINSTANCE
+						.createLocation();
+				newLocation.setUri(locationURI);
+				locations.push(newLocation);
+			}
+		} else if (locations.size() > 0
+				&& ("features".equals(qName) || "bundles".equals(qName))) {
+			String name = attributes.getValue("name");
+			String versionRange = attributes.getValue("versionRange");
+			if (name != null) {
+				IU newIU = TargetPlatformFactory.eINSTANCE.createIU();
+				newIU.setID(name);
+				locations.peek().getIus().add(newIU);
+				if (versionRange != null) {
+					newIU.setVersion(versionRange);
+				}
+
+			}
+		}
+	}
+
+	@Override
+	public void endElement(String uri, String localName, String qName)
+			throws SAXException {
+		super.endElement(uri, localName, qName);
+		if ("repositories".equals(qName) && !locations.isEmpty()) {
+			popedLocations.add(locations.pop());
+		}
+	}
+
+	public Collection<Location> getLocations() {
+		return popedLocations;
+	}
+
+}

fr.obeo.releng.targetplatform/src/fr/obeo/releng/targetplatform/resource/B3AggrTargetPlatformResourceImpl.java

@@ -0,0 +1,69 @@
+/*******************************************************************************
+ * Copyright (c) 2014 Obeo.
+ * 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:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package fr.obeo.releng.targetplatform.resource;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.Collection;
+import java.util.Map;
+
+import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.parsers.SAXParser;
+import javax.xml.parsers.SAXParserFactory;
+
+import org.eclipse.emf.common.util.URI;
+import org.eclipse.emf.ecore.resource.impl.ResourceImpl;
+import org.eclipse.xtext.diagnostics.ExceptionDiagnostic;
+import org.xml.sax.SAXException;
+
+import fr.obeo.releng.targetplatform.Location;
+import fr.obeo.releng.targetplatform.TargetPlatform;
+import fr.obeo.releng.targetplatform.TargetPlatformFactory;
+
+public class B3AggrTargetPlatformResourceImpl extends ResourceImpl {
+
+	public B3AggrTargetPlatformResourceImpl(URI uri) {
+		super(uri);
+	}
+
+	@Override
+	protected void doLoad(InputStream inputStream, Map<?, ?> options)
+			throws IOException {
+		getContents().clear();
+		SAXParserFactory saxFactory = SAXParserFactory.newInstance();
+		try {
+			SAXParser parser = saxFactory.newSAXParser();
+			B3AggrSaxHandler saxHandler = new B3AggrSaxHandler();
+			parser.parse(inputStream, saxHandler);
+			TargetPlatform b3aggrTP = TargetPlatformFactory.eINSTANCE
+					.createTargetPlatform();
+			b3aggrTP.setName(getURI().toString());
+			Collection<Location> locations = saxHandler.getLocations();
+			b3aggrTP.getContents().addAll(locations);
+			getContents().add(b3aggrTP);
+		} catch (ParserConfigurationException e) {
+
+			 this.getErrors().add(new ExceptionDiagnostic(e));
+		} catch (SAXException e) {
+			 this.getErrors().add(new ExceptionDiagnostic(e));
+		}
+	}
+
+	@Override
+	protected void doSave(OutputStream outputStream, Map<?, ?> options)
+			throws IOException {
+		/*
+		 * we are not able to save here.
+		 */
+	}
+
+}

fr.obeo.releng.targetplatform/src/fr/obeo/releng/targetplatform/resource/XtextResourceSetWithB3aggrSupport.java

@@ -0,0 +1,17 @@
+package fr.obeo.releng.targetplatform.resource;
+
+import org.eclipse.xtext.resource.XtextResourceSet;
+
+public class XtextResourceSetWithB3aggrSupport extends XtextResourceSet {
+
+	public XtextResourceSetWithB3aggrSupport() {
+		super();
+		/*
+		 * add support for b3aggr models
+		 */
+		getResourceFactoryRegistry().getExtensionToFactoryMap().put(
+				"b3aggrcon", new B3AggrConResourceFactory());
+		getResourceFactoryRegistry().getExtensionToFactoryMap().put("b3aggr",
+				new B3AggrConResourceFactory());
+	}
+}