plugins/org.eclipse.jst.j2ee.web/taglib/org/eclipse/jst/j2ee/internal/web/locator/WebXMLTaglibLocator.java - gerrit/jeetools/webtools.javaee - Git at Google

 /*******************************************************************************
  * Copyright (c) 2003, 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
  *******************************************************************************/
 package org.eclipse.jst.j2ee.internal.web.locator;

 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipException;
 import java.util.zip.ZipFile;

 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.runtime.IPath;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.jdt.core.IJavaProject;
 import org.eclipse.jdt.core.JavaCore;
 import org.eclipse.jdt.core.JavaModelException;
 import org.eclipse.jst.j2ee.internal.J2EEConstants;
 import org.eclipse.jst.j2ee.internal.J2EEVersionConstants;
 import org.eclipse.jst.j2ee.internal.web.operations.WebPropertiesUtil;
 import org.eclipse.jst.j2ee.internal.web.taglib.ITaglibInfo;
 import org.eclipse.jst.j2ee.internal.web.taglib.TLDDigester;
 import org.eclipse.jst.j2ee.internal.web.taglib.TaglibInfo;
 import org.eclipse.jst.j2ee.internal.web.taglib.WebXMLTaglibInfo;
 import org.eclipse.jst.j2ee.jsp.JSPConfig;
 import org.eclipse.jst.j2ee.jsp.TagLibRefType;
 import org.eclipse.jst.j2ee.web.componentcore.util.WebArtifactEdit;
 import org.eclipse.jst.j2ee.webapplication.TagLibRef;
 import org.eclipse.jst.j2ee.webapplication.WebApp;
 import org.eclipse.wst.web.internal.operation.ILibModule;

 /**
  * @version 1.0
  * @author
  */
 public class WebXMLTaglibLocator extends AbstractWebTaglibLocator {

 	public WebXMLTaglibLocator(IProject project) {
 		super(project);
 	}

 	protected ILibModule findLibModule(String jarFile) {
 		String fileName = new Path(jarFile).lastSegment();
 		ILibModule[] libModules = getLibModules();
 		for (int i = 0; i < libModules.length; i++) {
 			ILibModule iLibModule = libModules[i];
 			if (iLibModule.getJarName().equals(fileName))
 				return iLibModule;
 		}
 		return null;
 	}

 	protected IFile findWebAppRelativeFile(IPath path) {
 		if (path != null) {
 			IResource resource = getModuleServerRoot().findMember(path);
 			if (resource != null && resource.getType() == IResource.FILE)
 				return (IFile) resource;
 		}
 		return null;
 	}

 	protected IPath[] findTLDsInJar(IFile jarFile) {
 		ZipFile zFile = null;
 		IPath[] results = new IPath[0];

 		try {
 			zFile = new ZipFile(jarFile.getLocation().toFile());
 			ZipEntry[] entries = findTLDEntriesInZip(zFile);
 			results = new IPath[entries.length];
 			for (int i = 0; i < entries.length; i++) {
 				ZipEntry entry = entries[i];
 				results[i] = new Path(entry.getName());
 			}
 		} catch (ZipException e) {
 			//Do nothing
 		} catch (IOException e) {
 			//Do nothing
 		} finally {
 			if (zFile != null) {
 				try {
 					zFile.close();
 				} catch (IOException e) {
 					//Do nothing
 				}
 			}
 		}
 		return results;
 	}

 	/*
 	 * @see ITaglibLocator#search(IResource)
 	 */
 	public ITaglibInfo[] searchFile(IFile file) {
 		// This locator only looks at web.xml files.
 		if (!getWebDeploymentDescriptorPath().equals(file.getFullPath()))
 			return EMPTY_TAGLIBINFO_ARRAY;

 		ArrayList results = new ArrayList();
 		WebArtifactEdit webEdit = null;
 		try {
 			WebApp webApp = null;
 			//TODO migrate to flex projects
 			//webEdit = (WebArtifactEdit) StructureEdit.getFirstArtifactEditForRead(project);
 			if (webEdit != null)
 				webApp = (WebApp) webEdit.getDeploymentDescriptorRoot();

 			if (webApp == null)
 				return EMPTY_TAGLIBINFO_ARRAY;

 			List taglibs = new ArrayList();
 			if (webApp.getVersionID() >= J2EEVersionConstants.WEB_2_4_ID) {
 				JSPConfig config = webApp.getJspConfig();
 				if (config != null)
 					taglibs = config.getTagLibs();
 			} else {
 				taglibs = webApp.getTagLibs();
 			}

 			for (Iterator iter = taglibs.iterator(); iter.hasNext();) {
 				TagLibRef taglibRef13;
 				TagLibRefType taglibRef14;
 				String uri;
 				String taglibLocation;
 				if (webApp.getVersionID() >= J2EEVersionConstants.WEB_2_4_ID) {
 					taglibRef14 = (TagLibRefType) iter.next();
 					uri = taglibRef14.getTaglibURI();
 					taglibLocation = taglibRef14.getTaglibLocation();
 				} else {
 					taglibRef13 = (TagLibRef) iter.next();
 					uri = taglibRef13.getTaglibURI();
 					taglibLocation = taglibRef13.getTaglibLocation();
 				}

 				IPath projectRelativeLocation = new Path(taglibLocation);
 				IPath webModuleRelativeLocation = getWebAppRelativePath(taglibLocation);
 				if (webModuleRelativeLocation != null) {
 					projectRelativeLocation = getServerRoot().append(webModuleRelativeLocation);
 				}
 				WebXMLTaglibInfo taglibInfo = null;
 				IFile locationFile = findWebAppRelativeFile(webModuleRelativeLocation);
 				boolean isLocationResolved = true;
 				if (hasJarExtension(taglibLocation)) {
 					if (locationFile == null) {
 						// If the location file is null it means that the file could not
 						// be found in this project, check to see if it is referencing
 						// a TLD in a lib module
 						IResource resource = findLibModuleRelativeFile(webModuleRelativeLocation);
 						if (resource == null || !resource.exists()) {
 							// Go ahead and create an entry which cannot be resolved
 							// Only the /META-INF/taglib.tld file can be specified in web.xml
 							isLocationResolved = false;
 							taglibInfo = (WebXMLTaglibInfo) createTaglibForJar(uri, projectRelativeLocation, new Path("META-INF/taglib.tld")); //$NON-NLS-1$
 						} else {
 							locationFile = (IFile) resource;
 							taglibInfo = (WebXMLTaglibInfo) createTaglibForLibModuleJar(uri, projectRelativeLocation, resource);
 							setPrefix(taglibInfo, locationFile);
 						}
 					} else {
 						isLocationResolved = true;
 						// Only the /META-INF/taglib.tld file can be specified in web.xml
 						taglibInfo = (WebXMLTaglibInfo) createTaglibForJar(uri, projectRelativeLocation, new Path("META-INF/taglib.tld")); //$NON-NLS-1$
 						setPrefix(taglibInfo, locationFile);
 					}
 				} else {
 					if (locationFile == null)
 						isLocationResolved = false;
 					taglibInfo = (WebXMLTaglibInfo) createTaglibForTLD(uri, projectRelativeLocation);
 					setPrefix(taglibInfo, locationFile);

 				}
 				if (taglibInfo != null) {
 					taglibInfo.setIsWebXMLEntry(true);
 					taglibInfo.setWebXMLLocation(new Path(taglibLocation));
 					taglibInfo.setIsLocationResolved(isLocationResolved);
 					// If the location cannot be resolved, set the taglibInfo to be invalid
 					if (!isLocationResolved)
 						taglibInfo.setIsValid(false);
 					results.add(taglibInfo);
 				}
 			}
 		} finally {
 			if (webEdit != null)
 				webEdit.dispose();
 		}
 		return (ITaglibInfo[]) results.toArray(new ITaglibInfo[results.size()]);
 	}

 	/**
 	 * This method retrieves the short-name from the tld file and adds it as a prefix to the
 	 * ITaglibInfo entry
 	 *
 	 * @param taglibInfo
 	 * @param locationFile
 	 */
 	private void setPrefix(ITaglibInfo taglibInfo, IFile locationFile) {
 		if (locationFile != null && locationFile.exists()) {
 			TLDDigester digester = null;
 			try {
 				if (isTaglibJar(locationFile)) {
 					digester = getTLDDigester(locationFile, new Path("META-INF/taglib.tld")); //$NON-NLS-1$
 					((TaglibInfo) taglibInfo).setPrefix(digester);
 				} else if (hasTLDExtension(locationFile.getFullPath())) {
 					digester = getTLDDigester(locationFile);
 					((TaglibInfo) taglibInfo).setPrefix(digester);
 				}
 			} finally {
 				if (digester != null)
 					digester.close();
 			}
 		}
 	}

 	protected ITaglibInfo createTaglibForTLD(String uri, IPath file) {
 		return new WebXMLTaglibInfo(this.project, uri, file);
 	}

 	protected ITaglibInfo createTaglibForJar(String uri, IPath jarfile, IPath tldLocation) {
 		WebXMLTaglibInfo taglibInfo = new WebXMLTaglibInfo(this.project, uri, jarfile, tldLocation);
 		return taglibInfo;
 	}


 	protected ITaglibInfo createTaglibForLibModuleJar(String uri, IPath jarfile, IResource tldFile) {
 		WebXMLTaglibInfo taglibInfo = new WebXMLTaglibInfo(tldFile.getProject(), uri, jarfile, tldFile.getProjectRelativePath());
 		taglibInfo.setIsLibModule(true);
 		return taglibInfo;
 	}


 	/**
 	 * Method findLibModuleRelativeFile.
 	 *
 	 * @param location
 	 * @return String
 	 */
 	private IResource findLibModuleRelativeFile(IPath location) {
 		if (location != null) {
 			ILibModule libModule = findLibModule(location.lastSegment());
 			if (libModule != null) {
 				IProject tProject = libModule.getProject();
 				if (tProject.isOpen()) {
 					try {
 						IJavaProject javaProject = JavaCore.create(tProject);
 						IPath outputLocation = javaProject.getOutputLocation();
 						IPath searchPath = outputLocation.removeFirstSegments(1);
 						searchPath = searchPath.append(J2EEConstants.META_INF);
 						searchPath = searchPath.append("taglib.tld"); //$NON-NLS-1$
 						IResource searchResource = tProject.findMember(searchPath);
 						if (searchResource != null)
 							return searchResource;
 					} catch (JavaModelException e) {
 						//Do nothing
 					}
 				}
 			}
 		}
 		return null;
 	}

 	/**
 	 * Method getWebAppRelativePath. This method resolves a location specified in a taglib uri to a
 	 * project relative IPath
 	 *
 	 * @return null if the relative path cannot be resolved to an actual resource or a web library
 	 *         project
 	 * @param location
 	 * @return IPath
 	 */
 	private IPath getWebAppRelativePath(String location) {
 		IPath resolvedPath = null;
 		if (location != null && !location.trim().equals("")) { //$NON-NLS-1$
 			IPath preResolvePath = new Path(location);
 			IContainer webModuleFolder = getModuleServerRoot();
 			IContainer webLibraryFolder = WebPropertiesUtil.getWebLibFolder(project);
 			IContainer webInfFolder = webLibraryFolder.getParent();
 			if (preResolvePath.getDevice() == null && !preResolvePath.isEmpty()) {
 				IContainer searchContainer = webModuleFolder;
 				if (!preResolvePath.isAbsolute()) {
 					searchContainer = webInfFolder;
 				}
 				for (int i = 0; i < preResolvePath.segmentCount(); i++) {
 					String pathSegment = preResolvePath.segment(i);
 					if (pathSegment.equals(".")) //$NON-NLS-1$
 						continue;
 					else if (pathSegment.equals("..")) { //$NON-NLS-1$
 						searchContainer = searchContainer.getParent();
 						if (searchContainer.getFullPath().equals(webModuleFolder.getParent().getFullPath()))
 							break; // path must be confined to webModuleFolder
 					} else {
 						IResource resourceFound = searchContainer.findMember(pathSegment);
 						if (resourceFound instanceof IContainer) {
 							searchContainer = (IContainer) resourceFound;
 						} else if (i == preResolvePath.segmentCount() - 1) {
 							if (resourceFound != null) {
 								if (resourceFound.getType() == IResource.FILE) {
 									resolvedPath = resourceFound.getFullPath().removeFirstSegments(webModuleFolder.getFullPath().segmentCount());
 									break; // for readability
 								}
 							} else {
 								// maybe its a web library project, so let us check if the current
 								// container is the lib folder
 								if (webLibraryFolder.getFullPath().equals(searchContainer.getFullPath())) {
 									// the last segment could be the name of the jar for the web
 									// library project
 									if (findLibModule(pathSegment) != null) {
 										resolvedPath = searchContainer.getFullPath().removeFirstSegments(webModuleFolder.getFullPath().segmentCount());
 										resolvedPath = resolvedPath.append(pathSegment);
 									}
 								}
 							}
 						} else
 							break;// not a container, not the last segment either so its an invalid
 								  // path
 					}
 				}
 			}
 		}
 		return resolvedPath;
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2003, 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
	*******************************************************************************/
	package org.eclipse.jst.j2ee.internal.web.locator;

	import java.io.IOException;
	import java.util.ArrayList;
	import java.util.Iterator;
	import java.util.List;
	import java.util.zip.ZipEntry;
	import java.util.zip.ZipException;
	import java.util.zip.ZipFile;

	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.runtime.IPath;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.jdt.core.IJavaProject;
	import org.eclipse.jdt.core.JavaCore;
	import org.eclipse.jdt.core.JavaModelException;
	import org.eclipse.jst.j2ee.internal.J2EEConstants;
	import org.eclipse.jst.j2ee.internal.J2EEVersionConstants;
	import org.eclipse.jst.j2ee.internal.web.operations.WebPropertiesUtil;
	import org.eclipse.jst.j2ee.internal.web.taglib.ITaglibInfo;
	import org.eclipse.jst.j2ee.internal.web.taglib.TLDDigester;
	import org.eclipse.jst.j2ee.internal.web.taglib.TaglibInfo;
	import org.eclipse.jst.j2ee.internal.web.taglib.WebXMLTaglibInfo;
	import org.eclipse.jst.j2ee.jsp.JSPConfig;
	import org.eclipse.jst.j2ee.jsp.TagLibRefType;
	import org.eclipse.jst.j2ee.web.componentcore.util.WebArtifactEdit;
	import org.eclipse.jst.j2ee.webapplication.TagLibRef;
	import org.eclipse.jst.j2ee.webapplication.WebApp;
	import org.eclipse.wst.web.internal.operation.ILibModule;

	/**
	* @version 1.0
	* @author
	*/
	public class WebXMLTaglibLocator extends AbstractWebTaglibLocator {

	public WebXMLTaglibLocator(IProject project) {
	super(project);
	}

	protected ILibModule findLibModule(String jarFile) {
	String fileName = new Path(jarFile).lastSegment();
	ILibModule[] libModules = getLibModules();
	for (int i = 0; i < libModules.length; i++) {
	ILibModule iLibModule = libModules[i];
	if (iLibModule.getJarName().equals(fileName))
	return iLibModule;
	}
	return null;
	}

	protected IFile findWebAppRelativeFile(IPath path) {
	if (path != null) {
	IResource resource = getModuleServerRoot().findMember(path);
	if (resource != null && resource.getType() == IResource.FILE)
	return (IFile) resource;
	}
	return null;
	}

	protected IPath[] findTLDsInJar(IFile jarFile) {
	ZipFile zFile = null;
	IPath[] results = new IPath[0];

	try {
	zFile = new ZipFile(jarFile.getLocation().toFile());
	ZipEntry[] entries = findTLDEntriesInZip(zFile);
	results = new IPath[entries.length];
	for (int i = 0; i < entries.length; i++) {
	ZipEntry entry = entries[i];
	results[i] = new Path(entry.getName());
	}
	} catch (ZipException e) {
	//Do nothing
	} catch (IOException e) {
	//Do nothing
	} finally {
	if (zFile != null) {
	try {
	zFile.close();
	} catch (IOException e) {
	//Do nothing
	}
	}
	}
	return results;
	}

	/*
	* @see ITaglibLocator#search(IResource)
	*/
	public ITaglibInfo[] searchFile(IFile file) {
	// This locator only looks at web.xml files.
	if (!getWebDeploymentDescriptorPath().equals(file.getFullPath()))
	return EMPTY_TAGLIBINFO_ARRAY;

	ArrayList results = new ArrayList();
	WebArtifactEdit webEdit = null;
	try {
	WebApp webApp = null;
	//TODO migrate to flex projects
	//webEdit = (WebArtifactEdit) StructureEdit.getFirstArtifactEditForRead(project);
	if (webEdit != null)
	webApp = (WebApp) webEdit.getDeploymentDescriptorRoot();

	if (webApp == null)
	return EMPTY_TAGLIBINFO_ARRAY;

	List taglibs = new ArrayList();
	if (webApp.getVersionID() >= J2EEVersionConstants.WEB_2_4_ID) {
	JSPConfig config = webApp.getJspConfig();
	if (config != null)
	taglibs = config.getTagLibs();
	} else {
	taglibs = webApp.getTagLibs();
	}

	for (Iterator iter = taglibs.iterator(); iter.hasNext();) {
	TagLibRef taglibRef13;
	TagLibRefType taglibRef14;
	String uri;
	String taglibLocation;
	if (webApp.getVersionID() >= J2EEVersionConstants.WEB_2_4_ID) {
	taglibRef14 = (TagLibRefType) iter.next();
	uri = taglibRef14.getTaglibURI();
	taglibLocation = taglibRef14.getTaglibLocation();
	} else {
	taglibRef13 = (TagLibRef) iter.next();
	uri = taglibRef13.getTaglibURI();
	taglibLocation = taglibRef13.getTaglibLocation();
	}

	IPath projectRelativeLocation = new Path(taglibLocation);
	IPath webModuleRelativeLocation = getWebAppRelativePath(taglibLocation);
	if (webModuleRelativeLocation != null) {
	projectRelativeLocation = getServerRoot().append(webModuleRelativeLocation);
	}
	WebXMLTaglibInfo taglibInfo = null;
	IFile locationFile = findWebAppRelativeFile(webModuleRelativeLocation);
	boolean isLocationResolved = true;
	if (hasJarExtension(taglibLocation)) {
	if (locationFile == null) {
	// If the location file is null it means that the file could not
	// be found in this project, check to see if it is referencing
	// a TLD in a lib module
	IResource resource = findLibModuleRelativeFile(webModuleRelativeLocation);
	if (resource == null \|\| !resource.exists()) {
	// Go ahead and create an entry which cannot be resolved
	// Only the /META-INF/taglib.tld file can be specified in web.xml
	isLocationResolved = false;
	taglibInfo = (WebXMLTaglibInfo) createTaglibForJar(uri, projectRelativeLocation, new Path("META-INF/taglib.tld")); //$NON-NLS-1$
	} else {
	locationFile = (IFile) resource;
	taglibInfo = (WebXMLTaglibInfo) createTaglibForLibModuleJar(uri, projectRelativeLocation, resource);
	setPrefix(taglibInfo, locationFile);
	}
	} else {
	isLocationResolved = true;
	// Only the /META-INF/taglib.tld file can be specified in web.xml
	taglibInfo = (WebXMLTaglibInfo) createTaglibForJar(uri, projectRelativeLocation, new Path("META-INF/taglib.tld")); //$NON-NLS-1$
	setPrefix(taglibInfo, locationFile);
	}
	} else {
	if (locationFile == null)
	isLocationResolved = false;
	taglibInfo = (WebXMLTaglibInfo) createTaglibForTLD(uri, projectRelativeLocation);
	setPrefix(taglibInfo, locationFile);

	}
	if (taglibInfo != null) {
	taglibInfo.setIsWebXMLEntry(true);
	taglibInfo.setWebXMLLocation(new Path(taglibLocation));
	taglibInfo.setIsLocationResolved(isLocationResolved);
	// If the location cannot be resolved, set the taglibInfo to be invalid
	if (!isLocationResolved)
	taglibInfo.setIsValid(false);
	results.add(taglibInfo);
	}
	}
	} finally {
	if (webEdit != null)
	webEdit.dispose();
	}
	return (ITaglibInfo[]) results.toArray(new ITaglibInfo[results.size()]);
	}

	/**
	* This method retrieves the short-name from the tld file and adds it as a prefix to the
	* ITaglibInfo entry
	*
	* @param taglibInfo
	* @param locationFile
	*/
	private void setPrefix(ITaglibInfo taglibInfo, IFile locationFile) {
	if (locationFile != null && locationFile.exists()) {
	TLDDigester digester = null;
	try {
	if (isTaglibJar(locationFile)) {
	digester = getTLDDigester(locationFile, new Path("META-INF/taglib.tld")); //$NON-NLS-1$
	((TaglibInfo) taglibInfo).setPrefix(digester);
	} else if (hasTLDExtension(locationFile.getFullPath())) {
	digester = getTLDDigester(locationFile);
	((TaglibInfo) taglibInfo).setPrefix(digester);
	}
	} finally {
	if (digester != null)
	digester.close();
	}
	}
	}

	protected ITaglibInfo createTaglibForTLD(String uri, IPath file) {
	return new WebXMLTaglibInfo(this.project, uri, file);
	}

	protected ITaglibInfo createTaglibForJar(String uri, IPath jarfile, IPath tldLocation) {
	WebXMLTaglibInfo taglibInfo = new WebXMLTaglibInfo(this.project, uri, jarfile, tldLocation);
	return taglibInfo;
	}


	protected ITaglibInfo createTaglibForLibModuleJar(String uri, IPath jarfile, IResource tldFile) {
	WebXMLTaglibInfo taglibInfo = new WebXMLTaglibInfo(tldFile.getProject(), uri, jarfile, tldFile.getProjectRelativePath());
	taglibInfo.setIsLibModule(true);
	return taglibInfo;
	}


	/**
	* Method findLibModuleRelativeFile.
	*
	* @param location
	* @return String
	*/
	private IResource findLibModuleRelativeFile(IPath location) {
	if (location != null) {
	ILibModule libModule = findLibModule(location.lastSegment());
	if (libModule != null) {
	IProject tProject = libModule.getProject();
	if (tProject.isOpen()) {
	try {
	IJavaProject javaProject = JavaCore.create(tProject);
	IPath outputLocation = javaProject.getOutputLocation();
	IPath searchPath = outputLocation.removeFirstSegments(1);
	searchPath = searchPath.append(J2EEConstants.META_INF);
	searchPath = searchPath.append("taglib.tld"); //$NON-NLS-1$
	IResource searchResource = tProject.findMember(searchPath);
	if (searchResource != null)
	return searchResource;
	} catch (JavaModelException e) {
	//Do nothing
	}
	}
	}
	}
	return null;
	}

	/**
	* Method getWebAppRelativePath. This method resolves a location specified in a taglib uri to a
	* project relative IPath
	*
	* @return null if the relative path cannot be resolved to an actual resource or a web library
	* project
	* @param location
	* @return IPath
	*/
	private IPath getWebAppRelativePath(String location) {
	IPath resolvedPath = null;
	if (location != null && !location.trim().equals("")) { //$NON-NLS-1$
	IPath preResolvePath = new Path(location);
	IContainer webModuleFolder = getModuleServerRoot();
	IContainer webLibraryFolder = WebPropertiesUtil.getWebLibFolder(project);
	IContainer webInfFolder = webLibraryFolder.getParent();
	if (preResolvePath.getDevice() == null && !preResolvePath.isEmpty()) {
	IContainer searchContainer = webModuleFolder;
	if (!preResolvePath.isAbsolute()) {
	searchContainer = webInfFolder;
	}
	for (int i = 0; i < preResolvePath.segmentCount(); i++) {
	String pathSegment = preResolvePath.segment(i);
	if (pathSegment.equals(".")) //$NON-NLS-1$
	continue;
	else if (pathSegment.equals("..")) { //$NON-NLS-1$
	searchContainer = searchContainer.getParent();
	if (searchContainer.getFullPath().equals(webModuleFolder.getParent().getFullPath()))
	break; // path must be confined to webModuleFolder
	} else {
	IResource resourceFound = searchContainer.findMember(pathSegment);
	if (resourceFound instanceof IContainer) {
	searchContainer = (IContainer) resourceFound;
	} else if (i == preResolvePath.segmentCount() - 1) {
	if (resourceFound != null) {
	if (resourceFound.getType() == IResource.FILE) {
	resolvedPath = resourceFound.getFullPath().removeFirstSegments(webModuleFolder.getFullPath().segmentCount());
	break; // for readability
	}
	} else {
	// maybe its a web library project, so let us check if the current
	// container is the lib folder
	if (webLibraryFolder.getFullPath().equals(searchContainer.getFullPath())) {
	// the last segment could be the name of the jar for the web
	// library project
	if (findLibModule(pathSegment) != null) {
	resolvedPath = searchContainer.getFullPath().removeFirstSegments(webModuleFolder.getFullPath().segmentCount());
	resolvedPath = resolvedPath.append(pathSegment);
	}
	}
	}
	} else
	break;// not a container, not the last segment either so its an invalid
	// path
	}
	}
	}
	}
	return resolvedPath;
	}

	}