bundles/org.eclipse.wst.sse.core/src/org/eclipse/wst/sse/core/internal/tasks/TaskScanner.java - sourceediting/webtools.sourceediting - Git at Google

 /*******************************************************************************
  * Copyright (c) 2001, 2004 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
  *     Jens Lukowski/Innoopract - initial renaming/restructuring
  *
  *******************************************************************************/
 package org.eclipse.wst.sse.core.internal.tasks;

 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;

 import org.eclipse.core.resources.IContainer;
 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.resources.IResourceDelta;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.core.runtime.Platform;
 import org.eclipse.core.runtime.SubProgressMonitor;
 import org.eclipse.core.runtime.content.IContentDescription;
 import org.eclipse.core.runtime.content.IContentType;
 import org.eclipse.wst.sse.core.internal.Logger;

 /**
  * Dispatcher for scanning based on deltas and requested projects
  */
 class TaskScanner {
 	private static final boolean _debug = "true".equalsIgnoreCase(Platform.getDebugOption("org.eclipse.wst.sse.core/tasks")); //$NON-NLS-1$ //$NON-NLS-2$
 	private static final boolean _debugContentTypeDetection = "true".equalsIgnoreCase(Platform.getDebugOption("org.eclipse.wst.sse.core/tasks/detection")); //$NON-NLS-1$ //$NON-NLS-2$
 	private static final boolean _debugOverallPerf = "true".equalsIgnoreCase(Platform.getDebugOption("org.eclipse.wst.sse.core/tasks/overalltime")); //$NON-NLS-1$ //$NON-NLS-2$

 	private static TaskScanner _instance = null;

 	static synchronized TaskScanner getInstance() {
 		if (_instance == null) {
 			_instance = new TaskScanner();
 		}
 		return _instance;
 	}

 	private List fActiveDelegates = null;
 	private TaskScannerDelegateRegistryReader registry = null;
 	private long time0;

 	/**
 	 *
 	 */
 	private TaskScanner() {
 		super();
 		registry = new TaskScannerDelegateRegistryReader();
 		fActiveDelegates = new ArrayList();
 	}


 	private IContentType[] detectContentTypes(IResource resource) {
 		IContentType[] types = null;
 		if (resource.getType() == IResource.FILE && resource.isAccessible()) {
 			IContentDescription d = null;
 			try {
 				// optimized description lookup, might not succeed
 				d = ((IFile) resource).getContentDescription();
 				if (d != null) {
 					types = new IContentType[]{d.getContentType()};
 				}
 			}
 			catch (CoreException e) {
 				/*
 				 * should not be possible given the accessible and file type
 				 * check above
 				 */
 			}
 			if (types == null) {
 				types = Platform.getContentTypeManager().findContentTypesFor(resource.getName());
 			}
 			if (_debugContentTypeDetection) {
 				if (types.length > 0) {
 					if (types.length > 1) {
 						System.out.println(resource.getFullPath() + ": " + "multiple based on name (probably hierarchical)"); //$NON-NLS-1$ //$NON-NLS-2$
 					}
 					for (int i = 0; i < types.length; i++) {
 						System.out.println(resource.getFullPath() + " matched: " + types[i].getId()); //$NON-NLS-1$
 					}
 				}
 			}
 		}
 		return types;
 	}

 	void internalScan(final IProject project, final IResource resource, final IProgressMonitor scanMonitor) {
 		if (scanMonitor.isCanceled())
 			return;
 		try {
 			String name = resource.getName();
 			if (!resource.isDerived() && !resource.isPhantom() && !resource.isTeamPrivateMember() && name.length() != 0 && name.charAt(0) != '.') {
 				if ((resource.getType() & IResource.FOLDER) > 0 || (resource.getType() & IResource.PROJECT) > 0) {
 					SubProgressMonitor childMonitor = new SubProgressMonitor(scanMonitor, 1, SubProgressMonitor.PREPEND_MAIN_LABEL_TO_SUBTASK);
 					IResource[] children = ((IContainer) resource).members();
 					childMonitor.beginTask("", children.length); //$NON-NLS-1$
 					for (int i = children.length - 1; i >= 0; i--) {
 						internalScan(project, children[i], new SubProgressMonitor(childMonitor, 1, SubProgressMonitor.PREPEND_MAIN_LABEL_TO_SUBTASK));
 					}
 					childMonitor.done();
 				}
 				else if ((resource.getType() & IResource.FILE) > 0) {
 					scanFile(project, (IFile) resource, scanMonitor);
 					scanMonitor.worked(1);
 				}
 			}
 			else {
 				scanMonitor.worked(1);

 			}
 			scanMonitor.done();
 		}
 		catch (CoreException e) {
 			Logger.logException(e);
 		}
 	}

 	void internalScan(IResourceDelta delta, final IProgressMonitor monitor) {
 		if (monitor.isCanceled())
 			return;
 		try {
 			String name = delta.getFullPath().lastSegment();
 			IResource resource = delta.getResource();
 			if (!resource.isDerived() && !resource.isPhantom() && !resource.isTeamPrivateMember() && name.length() != 0 && name.charAt(0) != '.') {
 				if ((resource.getType() & IResource.FOLDER) > 0 || (resource.getType() & IResource.PROJECT) > 0) {
 					IResourceDelta[] children = delta.getAffectedChildren();
 					if (name.length() != 0 && name.charAt(0) != '.' && children.length > 0) {
 						SubProgressMonitor childMonitor = new SubProgressMonitor(monitor, 1, SubProgressMonitor.PREPEND_MAIN_LABEL_TO_SUBTASK);
 						childMonitor.beginTask("", children.length); //$NON-NLS-1$
 						for (int i = children.length - 1; i >= 0; i--) {
 							internalScan(children[i], new SubProgressMonitor(childMonitor, 1, SubProgressMonitor.PREPEND_MAIN_LABEL_TO_SUBTASK));
 						}
 						childMonitor.done();
 					}
 					else {
 						monitor.worked(1);
 					}
 				}
 				else if ((resource.getType() & IResource.FILE) > 0) {
 					if ((delta.getKind() & IResourceDelta.ADDED) > 0 || ((delta.getKind() & IResourceDelta.CHANGED) > 0 && (delta.getFlags() & IResourceDelta.CONTENT) > 0)) {
 						IFile file = (IFile) resource;
 						scanFile(file.getProject(), file, monitor);
 					}
 					monitor.worked(1);
 				}
 			}
 			else {
 				monitor.worked(1);
 			}
 		}
 		catch (Exception e) {
 			monitor.done();
 			Logger.logException(e);
 		}
 	}

 	void scan(final IProject project, final IProgressMonitor scanMonitor) {
 		if (scanMonitor.isCanceled())
 			return;
 		if (_debug) {
 			System.out.println(getClass().getName() + " scanning project " + project.getName()); //$NON-NLS-1$
 		}
 		if (_debugOverallPerf) {
 			time0 = System.currentTimeMillis();
 		}
 		try {
 			scanMonitor.beginTask("", project.members().length); //$NON-NLS-1$
 			internalScan(project, project, scanMonitor);
 			shutdownDelegates(project);
 			scanMonitor.done();
 		}
 		catch (CoreException e) {
 			Logger.logException(e);
 		}
 		if (_debugOverallPerf) {
 			System.out.println("" + (System.currentTimeMillis() - time0) + "ms for " + project.getFullPath()); //$NON-NLS-1$ //$NON-NLS-2$
 		}
 	}

 	void scan(IResourceDelta delta, final IProgressMonitor monitor) {
 		if (monitor.isCanceled())
 			return;
 		if (_debugOverallPerf) {
 			time0 = System.currentTimeMillis();
 		}
 		monitor.beginTask("", 1); //$NON-NLS-1$
 		internalScan(delta, monitor);
 		shutdownDelegates(delta.getResource().getProject());
 		monitor.done();
 		if (_debugOverallPerf) {
 			System.out.println("" + (System.currentTimeMillis() - time0) + "ms for " + delta.getFullPath()); //$NON-NLS-1$ //$NON-NLS-2$
 		}
 	}

 	void scanFile(IProject project, IFile file, IProgressMonitor monitor) {
 		if (monitor.isCanceled())
 			return;
 		ITaskScannerDelegate[] delegates = null;
 		IContentType[] types = detectContentTypes(file);
 		if (types != null) {
 			List allDelegates = new ArrayList();
 			for (int i = 0; i < types.length; i++) {
 				ITaskScannerDelegate[] typeDelegates = registry.getTaskScannerDelegates(types[i].getId());
 				if (typeDelegates != null && typeDelegates.length > 0) {
 					allDelegates.addAll(Arrays.asList(typeDelegates));
 				}
 			}
 			delegates = (ITaskScannerDelegate[]) allDelegates.toArray(new ITaskScannerDelegate[0]);
 			if (delegates.length > 0) {
 				SubProgressMonitor delegateMonitor = new SubProgressMonitor(monitor, 1, SubProgressMonitor.PREPEND_MAIN_LABEL_TO_SUBTASK);
 				delegateMonitor.beginTask(file.getFullPath().toString(), delegates.length);
 				for (int j = 0; delegates != null && j < delegates.length; j++) {
 					if (delegateMonitor.isCanceled())
 						continue;
 					try {
 						if (!fActiveDelegates.contains(delegates[j]) && !monitor.isCanceled()) {
 							delegates[j].startup(file.getProject());
 							fActiveDelegates.add(delegates[j]);
 						}
 						delegates[j].scan(file, delegateMonitor);
 						delegateMonitor.worked(1);
 					}
 					catch (Exception e) {
 						Logger.logException(file.getFullPath().toString(), e);
 					}
 				}
 				delegateMonitor.done();
 			}
 			else {
 				monitor.worked(1);
 			}
 		}
 	}

 	/**
 	 *
 	 */
 	private void shutdownDelegates(IProject project) {
 		for (int j = 0; j < fActiveDelegates.size(); j++) {
 			try {
 				((ITaskScannerDelegate) fActiveDelegates.get(j)).shutdown(project);
 			}
 			catch (Exception e) {
 				Logger.logException(project.getFullPath().toString(), e);
 			}
 		}
 		fActiveDelegates = new ArrayList(1);
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2001, 2004 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
	* Jens Lukowski/Innoopract - initial renaming/restructuring
	*
	*******************************************************************************/
	package org.eclipse.wst.sse.core.internal.tasks;

	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.List;

	import org.eclipse.core.resources.IContainer;
	import org.eclipse.core.resources.IFile;
	import org.eclipse.core.resources.IProject;
	import org.eclipse.core.resources.IResource;
	import org.eclipse.core.resources.IResourceDelta;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.IProgressMonitor;
	import org.eclipse.core.runtime.Platform;
	import org.eclipse.core.runtime.SubProgressMonitor;
	import org.eclipse.core.runtime.content.IContentDescription;
	import org.eclipse.core.runtime.content.IContentType;
	import org.eclipse.wst.sse.core.internal.Logger;

	/**
	* Dispatcher for scanning based on deltas and requested projects
	*/
	class TaskScanner {
	private static final boolean _debug = "true".equalsIgnoreCase(Platform.getDebugOption("org.eclipse.wst.sse.core/tasks")); //$NON-NLS-1$ //$NON-NLS-2$
	private static final boolean _debugContentTypeDetection = "true".equalsIgnoreCase(Platform.getDebugOption("org.eclipse.wst.sse.core/tasks/detection")); //$NON-NLS-1$ //$NON-NLS-2$
	private static final boolean _debugOverallPerf = "true".equalsIgnoreCase(Platform.getDebugOption("org.eclipse.wst.sse.core/tasks/overalltime")); //$NON-NLS-1$ //$NON-NLS-2$

	private static TaskScanner _instance = null;

	static synchronized TaskScanner getInstance() {
	if (_instance == null) {
	_instance = new TaskScanner();
	}
	return _instance;
	}

	private List fActiveDelegates = null;
	private TaskScannerDelegateRegistryReader registry = null;
	private long time0;

	/**
	*
	*/
	private TaskScanner() {
	super();
	registry = new TaskScannerDelegateRegistryReader();
	fActiveDelegates = new ArrayList();
	}


	private IContentType[] detectContentTypes(IResource resource) {
	IContentType[] types = null;
	if (resource.getType() == IResource.FILE && resource.isAccessible()) {
	IContentDescription d = null;
	try {
	// optimized description lookup, might not succeed
	d = ((IFile) resource).getContentDescription();
	if (d != null) {
	types = new IContentType[]{d.getContentType()};
	}
	}
	catch (CoreException e) {
	/*
	* should not be possible given the accessible and file type
	* check above
	*/
	}
	if (types == null) {
	types = Platform.getContentTypeManager().findContentTypesFor(resource.getName());
	}
	if (_debugContentTypeDetection) {
	if (types.length > 0) {
	if (types.length > 1) {
	System.out.println(resource.getFullPath() + ": " + "multiple based on name (probably hierarchical)"); //$NON-NLS-1$ //$NON-NLS-2$
	}
	for (int i = 0; i < types.length; i++) {
	System.out.println(resource.getFullPath() + " matched: " + types[i].getId()); //$NON-NLS-1$
	}
	}
	}
	}
	return types;
	}

	void internalScan(final IProject project, final IResource resource, final IProgressMonitor scanMonitor) {
	if (scanMonitor.isCanceled())
	return;
	try {
	String name = resource.getName();
	if (!resource.isDerived() && !resource.isPhantom() && !resource.isTeamPrivateMember() && name.length() != 0 && name.charAt(0) != '.') {
	if ((resource.getType() & IResource.FOLDER) > 0 \|\| (resource.getType() & IResource.PROJECT) > 0) {
	SubProgressMonitor childMonitor = new SubProgressMonitor(scanMonitor, 1, SubProgressMonitor.PREPEND_MAIN_LABEL_TO_SUBTASK);
	IResource[] children = ((IContainer) resource).members();
	childMonitor.beginTask("", children.length); //$NON-NLS-1$
	for (int i = children.length - 1; i >= 0; i--) {
	internalScan(project, children[i], new SubProgressMonitor(childMonitor, 1, SubProgressMonitor.PREPEND_MAIN_LABEL_TO_SUBTASK));
	}
	childMonitor.done();
	}
	else if ((resource.getType() & IResource.FILE) > 0) {
	scanFile(project, (IFile) resource, scanMonitor);
	scanMonitor.worked(1);
	}
	}
	else {
	scanMonitor.worked(1);

	}
	scanMonitor.done();
	}
	catch (CoreException e) {
	Logger.logException(e);
	}
	}

	void internalScan(IResourceDelta delta, final IProgressMonitor monitor) {
	if (monitor.isCanceled())
	return;
	try {
	String name = delta.getFullPath().lastSegment();
	IResource resource = delta.getResource();
	if (!resource.isDerived() && !resource.isPhantom() && !resource.isTeamPrivateMember() && name.length() != 0 && name.charAt(0) != '.') {
	if ((resource.getType() & IResource.FOLDER) > 0 \|\| (resource.getType() & IResource.PROJECT) > 0) {
	IResourceDelta[] children = delta.getAffectedChildren();
	if (name.length() != 0 && name.charAt(0) != '.' && children.length > 0) {
	SubProgressMonitor childMonitor = new SubProgressMonitor(monitor, 1, SubProgressMonitor.PREPEND_MAIN_LABEL_TO_SUBTASK);
	childMonitor.beginTask("", children.length); //$NON-NLS-1$
	for (int i = children.length - 1; i >= 0; i--) {
	internalScan(children[i], new SubProgressMonitor(childMonitor, 1, SubProgressMonitor.PREPEND_MAIN_LABEL_TO_SUBTASK));
	}
	childMonitor.done();
	}
	else {
	monitor.worked(1);
	}
	}
	else if ((resource.getType() & IResource.FILE) > 0) {
	if ((delta.getKind() & IResourceDelta.ADDED) > 0 \|\| ((delta.getKind() & IResourceDelta.CHANGED) > 0 && (delta.getFlags() & IResourceDelta.CONTENT) > 0)) {
	IFile file = (IFile) resource;
	scanFile(file.getProject(), file, monitor);
	}
	monitor.worked(1);
	}
	}
	else {
	monitor.worked(1);
	}
	}
	catch (Exception e) {
	monitor.done();
	Logger.logException(e);
	}
	}

	void scan(final IProject project, final IProgressMonitor scanMonitor) {
	if (scanMonitor.isCanceled())
	return;
	if (_debug) {
	System.out.println(getClass().getName() + " scanning project " + project.getName()); //$NON-NLS-1$
	}
	if (_debugOverallPerf) {
	time0 = System.currentTimeMillis();
	}
	try {
	scanMonitor.beginTask("", project.members().length); //$NON-NLS-1$
	internalScan(project, project, scanMonitor);
	shutdownDelegates(project);
	scanMonitor.done();
	}
	catch (CoreException e) {
	Logger.logException(e);
	}
	if (_debugOverallPerf) {
	System.out.println("" + (System.currentTimeMillis() - time0) + "ms for " + project.getFullPath()); //$NON-NLS-1$ //$NON-NLS-2$
	}
	}

	void scan(IResourceDelta delta, final IProgressMonitor monitor) {
	if (monitor.isCanceled())
	return;
	if (_debugOverallPerf) {
	time0 = System.currentTimeMillis();
	}
	monitor.beginTask("", 1); //$NON-NLS-1$
	internalScan(delta, monitor);
	shutdownDelegates(delta.getResource().getProject());
	monitor.done();
	if (_debugOverallPerf) {
	System.out.println("" + (System.currentTimeMillis() - time0) + "ms for " + delta.getFullPath()); //$NON-NLS-1$ //$NON-NLS-2$
	}
	}

	void scanFile(IProject project, IFile file, IProgressMonitor monitor) {
	if (monitor.isCanceled())
	return;
	ITaskScannerDelegate[] delegates = null;
	IContentType[] types = detectContentTypes(file);
	if (types != null) {
	List allDelegates = new ArrayList();
	for (int i = 0; i < types.length; i++) {
	ITaskScannerDelegate[] typeDelegates = registry.getTaskScannerDelegates(types[i].getId());
	if (typeDelegates != null && typeDelegates.length > 0) {
	allDelegates.addAll(Arrays.asList(typeDelegates));
	}
	}
	delegates = (ITaskScannerDelegate[]) allDelegates.toArray(new ITaskScannerDelegate[0]);
	if (delegates.length > 0) {
	SubProgressMonitor delegateMonitor = new SubProgressMonitor(monitor, 1, SubProgressMonitor.PREPEND_MAIN_LABEL_TO_SUBTASK);
	delegateMonitor.beginTask(file.getFullPath().toString(), delegates.length);
	for (int j = 0; delegates != null && j < delegates.length; j++) {
	if (delegateMonitor.isCanceled())
	continue;
	try {
	if (!fActiveDelegates.contains(delegates[j]) && !monitor.isCanceled()) {
	delegates[j].startup(file.getProject());
	fActiveDelegates.add(delegates[j]);
	}
	delegates[j].scan(file, delegateMonitor);
	delegateMonitor.worked(1);
	}
	catch (Exception e) {
	Logger.logException(file.getFullPath().toString(), e);
	}
	}
	delegateMonitor.done();
	}
	else {
	monitor.worked(1);
	}
	}
	}

	/**
	*
	*/
	private void shutdownDelegates(IProject project) {
	for (int j = 0; j < fActiveDelegates.size(); j++) {
	try {
	((ITaskScannerDelegate) fActiveDelegates.get(j)).shutdown(project);
	}
	catch (Exception e) {
	Logger.logException(project.getFullPath().toString(), e);
	}
	}
	fActiveDelegates = new ArrayList(1);
	}
	}