JI:449069 Add filtering to the PDOM generator

Adds a -exclude option to list directories and files that are to be
excluded from the pre-built PDOM so we don't get header files that
users don't get suggest optional headers.

Change-Id: I4e06ccda2207f9955bb743006af8cf947c5d67f3

core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/index/export/ExportIndexFileInfoMatcher.java

@@ -0,0 +1,65 @@
+/*******************************************************************************
+ * Copyright (c) 2013 QNX Software Systems 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:
+ * Doug Schaefer (QNX) - Initial Implementation
+ *******************************************************************************/
+package org.eclipse.cdt.core.index.export;
+
+import org.eclipse.core.filesystem.IFileInfo;
+import org.eclipse.core.resources.FileInfoMatcherDescription;
+import org.eclipse.core.resources.IContainer;
+import org.eclipse.core.resources.IProject;
+import org.eclipse.core.resources.filtermatchers.AbstractFileInfoMatcher;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IPath;
+import org.eclipse.core.runtime.Path;
+
+/**
+ * FileInfoMatcher that will match a given project relative path for a directory we want to exclude.
+ * 
+ * @author dschaefer
+ *
+ */
+public class ExportIndexFileInfoMatcher extends AbstractFileInfoMatcher {
+	
+	public static String ID = "org.eclipse.cdt.core.exportIndexFileInfoMatcher"; //$NON-NLS-1$
+	
+	private IProject project;
+	private IPath excludedFolder; 
+
+	public static FileInfoMatcherDescription getDescription(String excludePath) {
+		return new FileInfoMatcherDescription(ID, excludePath);
+	}
+	
+	public ExportIndexFileInfoMatcher() {
+	}
+
+	@Override
+	public boolean matches(IContainer parent, IFileInfo fileInfo) throws CoreException {
+		if (excludedFolder == null || project == null)
+			return false;
+		
+		if (!project.equals(parent.getProject()))
+			return false;
+		
+		// Remove the project and the linked folder from the path
+		IPath testPath = parent.getFullPath().removeFirstSegments(2).append(fileInfo.getName());
+		boolean matches = excludedFolder.isPrefixOf(testPath);
+		if (matches)
+			System.out.println("Filtering: " + testPath); //$NON-NLS-1$
+		return matches;
+	}
+
+	@Override
+	public void initialize(IProject project, Object arguments) throws CoreException {
+		this.project = project;
+		if (arguments instanceof String)
+			excludedFolder = new Path((String)arguments);
+	}
+
+}

core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/index/export/ExternalExportProjectProvider.java

@@ -34,10 +34,12 @@ import org.eclipse.cdt.core.settings.model.ICProjectDescription;
 import org.eclipse.cdt.core.settings.model.extension.impl.CDefaultConfigurationData;
 import org.eclipse.cdt.internal.core.index.IIndexFragment;
 import org.eclipse.cdt.internal.core.pdom.indexer.IndexerPreferences;
+import org.eclipse.core.resources.FileInfoMatcherDescription;
 import org.eclipse.core.resources.IFolder;
 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.IProjectDescription;
 import org.eclipse.core.resources.IResource;
+import org.eclipse.core.resources.IResourceFilterDescription;
 import org.eclipse.core.resources.IWorkspace;
 import org.eclipse.core.resources.IWorkspaceRunnable;
 import org.eclipse.core.resources.ResourcesPlugin;
@@ -61,6 +63,7 @@ public class ExternalExportProjectProvider extends AbstractExportProjectProvider
 	private static final String CONTENT = "content"; //$NON-NLS-1$
 	public static final String OPT_SOURCE = "-source"; //$NON-NLS-1$
 	public static final String OPT_INCLUDE = "-include"; //$NON-NLS-1$
+	public static final String OPT_EXCLUDE = "-exclude"; //$NON-NLS-1$
 	public static final String OPT_FRAGMENT_ID = "-id"; //$NON-NLS-1$
 
 	private IFolder content;
@@ -88,10 +91,16 @@ public class ExternalExportProjectProvider extends AbstractExportProjectProvider
 			includeFiles.addAll(getParameters(OPT_INCLUDE));				
 		}
 
+		// -exclude
+		List<String> excludeFiles = new ArrayList<String>();
+		if (isPresent(OPT_EXCLUDE)) {
+			excludeFiles.addAll(getParameters(OPT_EXCLUDE));
+		}
+		
 		// -id
 		fragmentId= getSingleString(OPT_FRAGMENT_ID);
 
-		return createCCProject("__" + System.currentTimeMillis(), source, includeFiles); //$NON-NLS-1$
+		return createCCProject("__" + System.currentTimeMillis(), source, includeFiles, excludeFiles); //$NON-NLS-1$
 	}
 
 	/**
@@ -111,27 +120,33 @@ public class ExternalExportProjectProvider extends AbstractExportProjectProvider
 	 * @throws CoreException
 	 */
 	private ICProject createCCProject(final String projectName, final File location,
-			final List<String> includeFiles) throws CoreException {
+			final List<String> includeFiles, final List<String> excludeFiles) throws CoreException {
 		final IWorkspace ws = ResourcesPlugin.getWorkspace();
 		final ICProject newProject[] = new ICProject[1];
 
 		ws.run(new IWorkspaceRunnable() {
 			@Override
 			public void run(IProgressMonitor monitor) throws CoreException {
-				IWorkspace workspace= ResourcesPlugin.getWorkspace();
+				IWorkspace workspace = ResourcesPlugin.getWorkspace();
-				IProject project= workspace.getRoot().getProject("__prebuilt_index_temp__" + System.currentTimeMillis()); //$NON-NLS-1$
+				IProject project = workspace.getRoot().getProject("__prebuilt_index_temp__" + System.currentTimeMillis()); //$NON-NLS-1$
 				IProjectDescription description = workspace.newProjectDescription(project.getName());
 				CCorePlugin.getDefault().createCProject(description, project, NPM, PREBUILT_PROJECT_OWNER);
 				CCorePlugin.getDefault().convertProjectFromCtoCC(project, NPM);
-				ICProjectDescription pd= CCorePlugin.getDefault().getProjectDescription(project, true); 
+				ICProjectDescription pd = CCorePlugin.getDefault().getProjectDescription(project, true); 
 				newCfg(pd, project.getName(), "config"); //$NON-NLS-1$
 								
 				CoreModel.getDefault().setProjectDescription(project, pd, true, new NullProgressMonitor());
 				
+				// Add in exclude filters
+				for (String excludeFile : excludeFiles) {
+					FileInfoMatcherDescription matcherDescription = ExportIndexFileInfoMatcher.getDescription(excludeFile);
+					project.createFilter(IResourceFilterDescription.EXCLUDE_ALL | IResourceFilterDescription.FOLDERS | IResourceFilterDescription.INHERITABLE, matcherDescription, 0, NPM);
+				}
+
 				ICProject cproject= CCorePlugin.getDefault().getCoreModel().create(project);
 				
 				// External content appears under a linked folder
-				content= cproject.getProject().getFolder(CONTENT);
+				content = project.getFolder(CONTENT);
 				content.createLink(new Path(location.getAbsolutePath()), IResource.NONE, null);
 
 				// Setup path entries