plugins/org.eclipse.wst.web/static_web_project/org/eclipse/wst/web/internal/operation/WebSettings.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.wst.web.internal.operation;

 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.StringWriter;
 import java.io.UnsupportedEncodingException;
 import java.util.ArrayList;

 import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;
 import javax.xml.parsers.FactoryConfigurationError;
 import javax.xml.parsers.ParserConfigurationException;
 import javax.xml.transform.OutputKeys;
 import javax.xml.transform.Transformer;
 import javax.xml.transform.TransformerConfigurationException;
 import javax.xml.transform.TransformerException;
 import javax.xml.transform.TransformerFactory;
 import javax.xml.transform.TransformerFactoryConfigurationError;
 import javax.xml.transform.dom.DOMSource;
 import javax.xml.transform.stream.StreamResult;

 import org.eclipse.core.resources.IContainer;
 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IFolder;
 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.jem.util.logger.proxy.Logger;
 import org.eclipse.wst.web.internal.ISimpleWebNatureConstants;
 import org.w3c.dom.Document;
 import org.w3c.dom.Element;
 import org.w3c.dom.Node;
 import org.w3c.dom.NodeList;
 import org.w3c.dom.Text;
 import org.xml.sax.InputSource;
 import org.xml.sax.SAXException;


 public class WebSettings{
 	protected IFile fSettingsFile;
 	protected IProject fProject;
 	protected Document fDomDocument;
 	// Version number may not change with every release,
 	// only when changes necessitate a new version number
 	public static String CURRENT_VERSION = "600"; //$NON-NLS-1$
 	public static String VERSION_V4 = "400"; //$NON-NLS-1$
 	public static final String ELEMENT_WORKSPACE_VERSION = "version"; //$NON-NLS-1$


 	static final String ELEMENT_WEBSETTINGS = "j2eesettings"; //$NON-NLS-1$
 	static final String ELEMENT_PROJECTTYPE = "project-type"; //$NON-NLS-1$
 	static final String ELEMENT_CONTEXTROOT = "context-root"; //$NON-NLS-1$
 	static final String ELEMENT_WEBCONTENT = "webcontent"; //$NON-NLS-1$
 	static final String ELEMENT_JSPLEVEL = "jsp-level"; //$NON-NLS-1$
 	static final String ELEMENT_LIBMODULES = "lib-modules"; //$NON-NLS-1$
 	static final String ELEMENT_LIBMODULE = "lib-module"; //$NON-NLS-1$
 	static final String ELEMENT_LIBMODULE_JAR = "jar"; //$NON-NLS-1$
 	static final String ELEMENT_LIBMODULE_PROJECT = "project"; //$NON-NLS-1$
 	static final String ELEMENT_FEATURES = "features"; //$NON-NLS-1$
 	static final String ELEMENT_FEATURE = "feature"; //$NON-NLS-1$
 	static final String ELEMENT_FEATUREID = "feature-id"; //$NON-NLS-1$

 	static final ILibModule[] EMPTY_LIBMODULES = new ILibModule[0];
 	static final String[] EMPTY_FEATURES = new String[0];
 	static boolean validWebSettings = true;

 	public WebSettings(IProject project) {
 		fProject = project;
 		//this.nature = nature;
 		if (getDOMDocument() == null) {
 			try {
 				createNewDocument();
 			} catch (CoreException e) {
 				//Ignore
 			} catch (IOException e) {
 				//Ignore
 			}
 		}
 	}

 	public WebSettings(IProject project, IFile webSettings) {
 		fProject = project;
 		//this.nature = nature;
 		if (getDOMDocument(webSettings) == null) {
 			validWebSettings = false;
 		}
 	}

 	protected IFile getSettingsFile() {
 		if (fSettingsFile == null) {
 			fSettingsFile = fProject.getFile(ISimpleWebNatureConstants.WEBSETTINGS_FILE_NAME);
 		}
 		return fSettingsFile;
 	}

 	public String getContextRoot() {
 		return getValue(ELEMENT_CONTEXTROOT);
 	}

 	public String getJSPLevel() {
 		return getValue(ELEMENT_JSPLEVEL);
 	}

 	public String getWebContentName() {
 		return getValue(ELEMENT_WEBCONTENT);
 	}

 	public ILibModule[] getLibModules() {
 		Element root = getRootElement();
 		if (root == null)
 			return EMPTY_LIBMODULES;

 		Element libModuleNode = findChildNode(root, ELEMENT_LIBMODULES);
 		if (libModuleNode == null)
 			return EMPTY_LIBMODULES;

 		NodeList children = libModuleNode.getChildNodes();
 		ArrayList results = new ArrayList();
 		for (int i = 0; i < children.getLength(); i++) {
 			Node node = children.item(i);
 			ILibModule libModule = getLibModule(node);
 			if (libModule != null) {
 				results.add(libModule);
 			}
 		}

 		return (ILibModule[]) results.toArray(new ILibModule[results.size()]);
 	}

 	protected ILibModule getLibModule(Node node) {
 		if (!node.getNodeName().equalsIgnoreCase(ELEMENT_LIBMODULE))
 			return null;
 		String jarName = getNodeValue((Element) node, ELEMENT_LIBMODULE_JAR);
 		String projectName = getNodeValue((Element) node, ELEMENT_LIBMODULE_PROJECT);

 		ILibModule libModule = new LibModule(jarName, projectName);
 		return libModule;
 	}

 	public String[] getFeatureIds() {
 		Element root = getRootElement();
 		if (root == null)
 			return EMPTY_FEATURES;

 		Element featuresNode = findChildNode(root, ELEMENT_FEATURES);
 		if (featuresNode == null)
 			return EMPTY_FEATURES;

 		NodeList children = featuresNode.getChildNodes();
 		ArrayList results = new ArrayList();
 		for (int i = 0; i < children.getLength(); i++) {
 			Node node = children.item(i);
 			String featureId = getFeatureId(node);
 			if (featureId != null) {
 				results.add(featureId);
 			}
 		}

 		return (String[]) results.toArray(new String[results.size()]);
 	}

 	protected String getFeatureId(Node node) {
 		if (!node.getNodeName().equalsIgnoreCase(ELEMENT_FEATURE))
 			return null;
 		String id = getNodeValue((Element) node, ELEMENT_FEATUREID);

 		return id;
 	}

 	public String getProjectType() {
 		return getValue(ELEMENT_PROJECTTYPE);
 	}

 	public String getCurrentVersion() {
 		// The following change is needed when the websettings file is
 		// deleted from a version 4 workspace Checking for webapplication
 		// folder - Otherwise, new projects will not work.
 		IContainer webmoduleFolder = fProject.getFolder(ISimpleWebNatureConstants.WEB_MODULE_DIRECTORY_V4);
 		IFolder webinfFolder = ((IFolder) webmoduleFolder).getFolder(ISimpleWebNatureConstants.INFO_DIRECTORY);
 		if (webinfFolder.exists()) {
 			return VERSION_V4;
 		}

 		return CURRENT_VERSION;
 	}

 	protected String getValue(String settingName) {
 		Element root = getRootElement();
 		if (root == null)
 			return null;
 		return getNodeValue(root, settingName);
 	}

 	protected void createNewDocument() throws CoreException, IOException {
 		StringWriter writer = new StringWriter();
 		writer.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"); //$NON-NLS-1$
 		writer.write("\n"); //$NON-NLS-1$
 		writer.write("<j2eesettings version=\""); //$NON-NLS-1$
 		writer.write(getCurrentVersion());
 		writer.write("\">");//$NON-NLS-1$
 		writer.write("\n"); //$NON-NLS-1$
 		writer.write("</j2eesettings>"); //$NON-NLS-1$
 		writer.write("\n"); //$NON-NLS-1$

 		InputStream sourceStream = new ByteArrayInputStream(writer.toString().getBytes("UTF8")); //$NON-NLS-1$
 		IFile webSettingsFile = getSettingsFile();
 		if (webSettingsFile.exists())
 			webSettingsFile.setContents(sourceStream, true, true, null);
 		else
 			webSettingsFile.create(sourceStream, true, null);
 		read();
 	}

 	public void setContextRoot(String contextRoot) {
 		setValue(ELEMENT_CONTEXTROOT, contextRoot);
 	}

 	public void setJSPLevel(String jspLevel) {
 		setValue(ELEMENT_JSPLEVEL, jspLevel);
 	}

 	public void setWebContentName(String name) {
 		String defaultName = getWebContentName();
 		if (defaultName == null || defaultName.length() == 0 || !name.equals(defaultName))
 			setValue(ELEMENT_WEBCONTENT, name);
 	}

 	public void setProjectType(String projectType) {
 		setValue(ELEMENT_PROJECTTYPE, projectType);
 	}

 	public void setLibModules(ILibModule[] libModules) {
 		Document doc = getOrCreateDocument();
 		Node libModulesNode = findOrCreateChildNode(doc.getDocumentElement(), ELEMENT_LIBMODULES);
 		Node firstChild = null;

 		// Remove all of the children.
 		while ((firstChild = libModulesNode.getFirstChild()) != null)
 			libModulesNode.removeChild(firstChild);

 		// Add new children.
 		for (int i = 0; i < libModules.length; i++) {
 			ILibModule iLibModule = libModules[i];
 			if (iLibModule != null)
 				addLibModule(libModulesNode, iLibModule);
 		}
 	}

 	protected void addLibModule(Node libModulesNode, ILibModule libModule) {
 		Document doc = getDOMDocument();
 		Element libModuleNode = doc.createElement(ELEMENT_LIBMODULE);
 		libModulesNode.appendChild(libModuleNode);
 		setValue(libModuleNode, ELEMENT_LIBMODULE_JAR, libModule.getJarName());
 		setValue(libModuleNode, ELEMENT_LIBMODULE_PROJECT, libModule.getProjectName());
 	}

 	public void setFeatureIds(String[] featureIds) {
 		Document doc = getOrCreateDocument();
 		Node featuresNode = findOrCreateChildNode(doc.getDocumentElement(), ELEMENT_FEATURES);

 		// Add new children.
 		for (int i = 0; i < featureIds.length; i++) {
 			String sFeatureId = featureIds[i];
 			if (sFeatureId != null)
 				addFeatureId(featuresNode, sFeatureId);
 		}
 	}

 	protected void addFeatureId(Node featuresNode, String featureId) {
 		Document doc = getDOMDocument();
 		Element featureNode = doc.createElement(ELEMENT_FEATURE);
 		featuresNode.appendChild(featureNode);
 		setValue(featureNode, ELEMENT_FEATUREID, featureId);
 	}

 	public boolean isValidWebSettings() {
 		return validWebSettings;
 	}

 	public void removeFeatureId(String removeId) {
 		Element root = getRootElement();
 		if (root != null) {
 			Element featuresNode = findChildNode(root, ELEMENT_FEATURES);
 			if (featuresNode != null) {
 				NodeList children = featuresNode.getChildNodes();
 				ArrayList results = new ArrayList();
 				for (int i = 0; i < children.getLength(); i++) {
 					Node node = children.item(i);
 					String featureId = getFeatureId(node);
 					if (featureId != null) {
 						// determine if in the list to remove
 						if (!(featureId.equals(removeId)))
 							results.add(featureId);
 					}
 				}
 				// Remove all of the children.
 				Node firstChild = null;
 				while ((firstChild = featuresNode.getFirstChild()) != null)
 					featuresNode.removeChild(firstChild);
 				if (results.size() > 0) {
 					String[] updateFeatureIds = (String[]) results.toArray(new String[results.size()]);
 					// Add new children.
 					for (int i = 0; i < results.size(); i++) {
 						String sFeatureId = updateFeatureIds[i];
 						if (sFeatureId != null)
 							addFeatureId(featuresNode, sFeatureId);
 					}
 				}
 			}
 		}
 	}

 	public String getRootNodeName() {
 		return ELEMENT_WEBSETTINGS;
 	}
 	protected Node findOrCreateChildNode(Element root, String nodeName) {
 		Node node = findChildNode(root, nodeName);
 		if (node == null) {
 			// If the element does not exist yet, create one.
 			node = getDOMDocument().createElement(nodeName);
 			root.appendChild(node);
 		}
 		return node;
 	}
 	protected Element findChildNode(Element parent, String nodeName) {
 		NodeList list = parent.getChildNodes();
 		int length = list.getLength();
 		for (int i = 0; i < length; ++i) {
 			Node curNode = list.item(i);
 			if (curNode.getNodeType() == Node.ELEMENT_NODE) {
 				Element curElement = (Element) curNode;
 				if (curElement.getNodeName().equalsIgnoreCase(nodeName))
 					return curElement;
 			}
 		}
 		return null;
 	}
 	protected Element getRootElement() {
 		Document doc = getDOMDocument();
 		if (doc == null)
 			return null;

 		Element root = doc.getDocumentElement();
 		if (root == null)
 			return null;
 		if (!root.getNodeName().equalsIgnoreCase(getRootNodeName()))
 			return null;
 		return root;
 	}

 	protected Document getOrCreateDocument() {
 		Document doc = getDOMDocument();
 		if (doc == null) {
 			try {
 				createNewDocument();
 				doc = getDOMDocument();
 			} catch (CoreException e) {
 				//Ignore
 			} catch (IOException e) {
 				//Ignore
 			}
 		}
 		return doc;
 	}
 	public static String getWebContentDirectory(InputStream inputStream) {
 		InputStreamReader fileStream = null;
 		try {
 			fileStream = new InputStreamReader(inputStream, "utf-8"); //$NON-NLS-1$
 			DocumentBuilder parser = DocumentBuilderFactory.newInstance().newDocumentBuilder();
 			Document fDomDocument = parser.parse(new InputSource(fileStream));
 			Element root = fDomDocument.getDocumentElement();
 			if (root.getNodeName().equalsIgnoreCase(ELEMENT_WEBSETTINGS)) {
 				NodeList list = root.getChildNodes();
 				for (int i = 0, length = list.getLength(); i < length; i++) {
 					Node node = list.item(i);
 					if (node.getNodeName().equals(ELEMENT_WEBCONTENT)) {
 						NodeList childNodes = node.getChildNodes();
 						for (int j = 0, childLength = childNodes.getLength(); j < childLength; j++) {
 							Node curNode = childNodes.item(j);
 							if (curNode.getNodeType() == Node.TEXT_NODE) {
 								return curNode.getNodeValue();
 							}
 						}
 						return null;
 					}
 				}
 			}
 		} catch (UnsupportedEncodingException e) {
 			//Ignore
 		} catch (ParserConfigurationException e) {
 			//Ignore
 		} catch (FactoryConfigurationError e) {
 			//Ignore
 		} catch (SAXException e) {
 			//Ignore
 		} catch (IOException e) {
 			//Ignore
 		} catch (Exception e) {
 			//Ignore
 		} finally {
 			if (fileStream != null)
 				try {
 					fileStream.close();
 				} catch (IOException e1) {
 					//Ignore
 				}
 		}
 		return null;
 	}
 	protected Document getDOMDocument() {
 		if (fDomDocument == null) {
 			try {
 				read();
 			} catch (IOException e) {
 				//Ignore
 			}
 		}
 		return fDomDocument;
 	}

 	// Version of getDomDocument for use by import
 	protected Document getDOMDocument(IFile webSettings) {
 		if (fDomDocument == null) {
 			try {
 				read(webSettings);
 			} catch (IOException e) {
 				//Ignore
 			}
 		}
 		return fDomDocument;
 	}
 	protected void read() throws IOException {
 		// This following was changed for Defect 212723 The Util StringReader
 		// was changed to the InputStreamReader MAY
 		IFile settingsFile = getSettingsFile();
 		InputStream inputStream = null;
 		InputStreamReader fileStream = null;
 		if (settingsFile.exists()) {
 			try {
 				ClassLoader prevClassLoader = Thread.currentThread().getContextClassLoader();
 				try {
 					Thread.currentThread().setContextClassLoader(getClass().getClassLoader());

 					// JZ: fix to defect 240171
 					inputStream = settingsFile.getContents(true);
 					fileStream = new InputStreamReader(inputStream, "utf-8"); //$NON-NLS-1$

 					DocumentBuilder parser = DocumentBuilderFactory.newInstance().newDocumentBuilder();
 					fDomDocument = parser.parse(new InputSource(fileStream));
 				} finally {
 					Thread.currentThread().setContextClassLoader(prevClassLoader);
 				}
 	/*		} catch (JavaModelException e) {
 				throw new IOException("file.badFormat"); //$NON-NLS-1$
 */			} catch (CoreException e) {
 				throw new IOException("file.badFormat"); //$NON-NLS-1$
 			} catch (SAXException e) {
 				throw new IOException("file.badFormat"); //$NON-NLS-1$
 			} catch (ParserConfigurationException e) {
 				throw new IOException("file.badFormat"); //$NON-NLS-1$
 			} finally {
 				if (fileStream != null)
 					fileStream.close();
 			}
 		}
 	}


 	// Version of read for use by import
 	protected void read(IFile settings) throws IOException {
 		// This following was changed for Defect 212723 The Util StringReader
 		// was changed to the InputStreamReader MAY
 		IFile settingsFile = settings;

 		InputStream inputStream = null;
 		InputStreamReader fileStream = null;
 		if (settingsFile != null) {
 			try {
 				ClassLoader prevClassLoader = Thread.currentThread().getContextClassLoader();
 				try {
 					Thread.currentThread().setContextClassLoader(getClass().getClassLoader());
 					inputStream = settingsFile.getContents();
 					fileStream = new InputStreamReader(inputStream, "utf-8"); //$NON-NLS-1$

 					DocumentBuilder parser = DocumentBuilderFactory.newInstance().newDocumentBuilder();
 					fDomDocument = parser.parse(new InputSource(fileStream));
 				} finally {
 					Thread.currentThread().setContextClassLoader(prevClassLoader);
 				}

 			} catch (SAXException e) {
 				throw new IOException("file.badFormat"); //$NON-NLS-1$
 			} catch (ParserConfigurationException e) {
 				throw new IOException("file.badFormat"); //$NON-NLS-1$
 			} catch (CoreException ce) {
 				ce.printStackTrace();
 			} finally {
 				if (fileStream != null)
 					fileStream.close();
 			}
 		}
 	}
 	protected void setValue(String nodeName, String value) {
 		Document doc = getOrCreateDocument();
 		setValue(doc.getDocumentElement(), nodeName, value);
 	}
 	protected void setValue(Element root, String nodeName, String value) {
 		Node node = findOrCreateChildNode(root, nodeName);

 		NodeList childNodes = node.getChildNodes();

 		if (childNodes.getLength() == 0) {
 			Text newText = getDOMDocument().createTextNode(value);
 			node.appendChild(newText);
 			root.appendChild(node);
 		} else {
 			for (int i = 0; i < childNodes.getLength(); i++) {
 				Node curNode = childNodes.item(i);
 				if (curNode.getNodeType() == Node.TEXT_NODE)
 					curNode.setNodeValue(value);
 			}
 		}
 	}

 	protected String getNodeValue(Element parent, String nodeName) {
 		if (parent != null) {
 			Element node = findChildNode(parent, nodeName);
 			if (node != null)
 				return getChildText(node);
 		}
 		return null;
 	}

 	protected String getChildText(Element node) {
 		NodeList list = node.getChildNodes();
 		int length = list.getLength();
 		for (int i = 0; i < length; ++i) {
 			Node curNode = list.item(i);
 			if (curNode.getNodeType() == Node.TEXT_NODE) {
 				return curNode.getNodeValue();
 			}
 		}
 		return null;
 	}
 	public void setVersion(String version) {
 		Document doc = getDOMDocument();
 		if (doc == null)
 			return;

 		Element root = doc.getDocumentElement();
 		if (root == null)
 			return;

 		if (!root.getNodeName().equalsIgnoreCase(getRootNodeName()))
 			return;

 		root.setAttribute(ELEMENT_WORKSPACE_VERSION, version); //$NON-NLS-1$
 	}
 	public void write() throws CoreException {
 		if (fDomDocument == null)
 			return;

 		ByteArrayOutputStream outStream = new ByteArrayOutputStream();

 		try {
 			TransformerFactory factory = TransformerFactory.newInstance();
 			Transformer transformer = factory.newTransformer();
 			transformer.setOutputProperty(OutputKeys.INDENT, "yes"); //$NON-NLS-1$
 			transformer.transform(new DOMSource(fDomDocument.getDocumentElement()), new StreamResult(outStream));
 		} catch (TransformerConfigurationException e) {
 			Logger.getLogger().logError(e);
 		} catch (TransformerFactoryConfigurationError e) {
 			Logger.getLogger().logError(e);
 		} catch (TransformerException e) {
 			Logger.getLogger().logError(e);
 		}

 		InputStream sourceStream = new ByteArrayInputStream(outStream.toByteArray());

 		IFile settingsFile = getSettingsFile();
 		if (settingsFile.exists())
 			settingsFile.setContents(sourceStream, true, true, null);
 		else
 			settingsFile.create(sourceStream, true, null);
 	}
 	public String getVersion() {
 		Document doc = getDOMDocument();
 		if (doc == null)
 			return null;

 		Element root = doc.getDocumentElement();
 		if (root == null)
 			return null;
 		if (!root.getNodeName().equalsIgnoreCase(getRootNodeName()))
 			return null;

 		return root.getAttribute(ELEMENT_WORKSPACE_VERSION); //$NON-NLS-1$
 	}
 }
	/***************************************************************************************************
	* 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.wst.web.internal.operation;

	import java.io.ByteArrayInputStream;
	import java.io.ByteArrayOutputStream;
	import java.io.IOException;
	import java.io.InputStream;
	import java.io.InputStreamReader;
	import java.io.StringWriter;
	import java.io.UnsupportedEncodingException;
	import java.util.ArrayList;

	import javax.xml.parsers.DocumentBuilder;
	import javax.xml.parsers.DocumentBuilderFactory;
	import javax.xml.parsers.FactoryConfigurationError;
	import javax.xml.parsers.ParserConfigurationException;
	import javax.xml.transform.OutputKeys;
	import javax.xml.transform.Transformer;
	import javax.xml.transform.TransformerConfigurationException;
	import javax.xml.transform.TransformerException;
	import javax.xml.transform.TransformerFactory;
	import javax.xml.transform.TransformerFactoryConfigurationError;
	import javax.xml.transform.dom.DOMSource;
	import javax.xml.transform.stream.StreamResult;

	import org.eclipse.core.resources.IContainer;
	import org.eclipse.core.resources.IFile;
	import org.eclipse.core.resources.IFolder;
	import org.eclipse.core.resources.IProject;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.jem.util.logger.proxy.Logger;
	import org.eclipse.wst.web.internal.ISimpleWebNatureConstants;
	import org.w3c.dom.Document;
	import org.w3c.dom.Element;
	import org.w3c.dom.Node;
	import org.w3c.dom.NodeList;
	import org.w3c.dom.Text;
	import org.xml.sax.InputSource;
	import org.xml.sax.SAXException;


	public class WebSettings{
	protected IFile fSettingsFile;
	protected IProject fProject;
	protected Document fDomDocument;
	// Version number may not change with every release,
	// only when changes necessitate a new version number
	public static String CURRENT_VERSION = "600"; //$NON-NLS-1$
	public static String VERSION_V4 = "400"; //$NON-NLS-1$
	public static final String ELEMENT_WORKSPACE_VERSION = "version"; //$NON-NLS-1$


	static final String ELEMENT_WEBSETTINGS = "j2eesettings"; //$NON-NLS-1$
	static final String ELEMENT_PROJECTTYPE = "project-type"; //$NON-NLS-1$
	static final String ELEMENT_CONTEXTROOT = "context-root"; //$NON-NLS-1$
	static final String ELEMENT_WEBCONTENT = "webcontent"; //$NON-NLS-1$
	static final String ELEMENT_JSPLEVEL = "jsp-level"; //$NON-NLS-1$
	static final String ELEMENT_LIBMODULES = "lib-modules"; //$NON-NLS-1$
	static final String ELEMENT_LIBMODULE = "lib-module"; //$NON-NLS-1$
	static final String ELEMENT_LIBMODULE_JAR = "jar"; //$NON-NLS-1$
	static final String ELEMENT_LIBMODULE_PROJECT = "project"; //$NON-NLS-1$
	static final String ELEMENT_FEATURES = "features"; //$NON-NLS-1$
	static final String ELEMENT_FEATURE = "feature"; //$NON-NLS-1$
	static final String ELEMENT_FEATUREID = "feature-id"; //$NON-NLS-1$

	static final ILibModule[] EMPTY_LIBMODULES = new ILibModule[0];
	static final String[] EMPTY_FEATURES = new String[0];
	static boolean validWebSettings = true;

	public WebSettings(IProject project) {
	fProject = project;
	//this.nature = nature;
	if (getDOMDocument() == null) {
	try {
	createNewDocument();
	} catch (CoreException e) {
	//Ignore
	} catch (IOException e) {
	//Ignore
	}
	}
	}

	public WebSettings(IProject project, IFile webSettings) {
	fProject = project;
	//this.nature = nature;
	if (getDOMDocument(webSettings) == null) {
	validWebSettings = false;
	}
	}

	protected IFile getSettingsFile() {
	if (fSettingsFile == null) {
	fSettingsFile = fProject.getFile(ISimpleWebNatureConstants.WEBSETTINGS_FILE_NAME);
	}
	return fSettingsFile;
	}

	public String getContextRoot() {
	return getValue(ELEMENT_CONTEXTROOT);
	}

	public String getJSPLevel() {
	return getValue(ELEMENT_JSPLEVEL);
	}

	public String getWebContentName() {
	return getValue(ELEMENT_WEBCONTENT);
	}

	public ILibModule[] getLibModules() {
	Element root = getRootElement();
	if (root == null)
	return EMPTY_LIBMODULES;

	Element libModuleNode = findChildNode(root, ELEMENT_LIBMODULES);
	if (libModuleNode == null)
	return EMPTY_LIBMODULES;

	NodeList children = libModuleNode.getChildNodes();
	ArrayList results = new ArrayList();
	for (int i = 0; i < children.getLength(); i++) {
	Node node = children.item(i);
	ILibModule libModule = getLibModule(node);
	if (libModule != null) {
	results.add(libModule);
	}
	}

	return (ILibModule[]) results.toArray(new ILibModule[results.size()]);
	}

	protected ILibModule getLibModule(Node node) {
	if (!node.getNodeName().equalsIgnoreCase(ELEMENT_LIBMODULE))
	return null;
	String jarName = getNodeValue((Element) node, ELEMENT_LIBMODULE_JAR);
	String projectName = getNodeValue((Element) node, ELEMENT_LIBMODULE_PROJECT);

	ILibModule libModule = new LibModule(jarName, projectName);
	return libModule;
	}

	public String[] getFeatureIds() {
	Element root = getRootElement();
	if (root == null)
	return EMPTY_FEATURES;

	Element featuresNode = findChildNode(root, ELEMENT_FEATURES);
	if (featuresNode == null)
	return EMPTY_FEATURES;

	NodeList children = featuresNode.getChildNodes();
	ArrayList results = new ArrayList();
	for (int i = 0; i < children.getLength(); i++) {
	Node node = children.item(i);
	String featureId = getFeatureId(node);
	if (featureId != null) {
	results.add(featureId);
	}
	}

	return (String[]) results.toArray(new String[results.size()]);
	}

	protected String getFeatureId(Node node) {
	if (!node.getNodeName().equalsIgnoreCase(ELEMENT_FEATURE))
	return null;
	String id = getNodeValue((Element) node, ELEMENT_FEATUREID);

	return id;
	}

	public String getProjectType() {
	return getValue(ELEMENT_PROJECTTYPE);
	}

	public String getCurrentVersion() {
	// The following change is needed when the websettings file is
	// deleted from a version 4 workspace Checking for webapplication
	// folder - Otherwise, new projects will not work.
	IContainer webmoduleFolder = fProject.getFolder(ISimpleWebNatureConstants.WEB_MODULE_DIRECTORY_V4);
	IFolder webinfFolder = ((IFolder) webmoduleFolder).getFolder(ISimpleWebNatureConstants.INFO_DIRECTORY);
	if (webinfFolder.exists()) {
	return VERSION_V4;
	}

	return CURRENT_VERSION;
	}

	protected String getValue(String settingName) {
	Element root = getRootElement();
	if (root == null)
	return null;
	return getNodeValue(root, settingName);
	}

	protected void createNewDocument() throws CoreException, IOException {
	StringWriter writer = new StringWriter();
	writer.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"); //$NON-NLS-1$
	writer.write("\n"); //$NON-NLS-1$
	writer.write("<j2eesettings version=\""); //$NON-NLS-1$
	writer.write(getCurrentVersion());
	writer.write("\">");//$NON-NLS-1$
	writer.write("\n"); //$NON-NLS-1$
	writer.write("</j2eesettings>"); //$NON-NLS-1$
	writer.write("\n"); //$NON-NLS-1$

	InputStream sourceStream = new ByteArrayInputStream(writer.toString().getBytes("UTF8")); //$NON-NLS-1$
	IFile webSettingsFile = getSettingsFile();
	if (webSettingsFile.exists())
	webSettingsFile.setContents(sourceStream, true, true, null);
	else
	webSettingsFile.create(sourceStream, true, null);
	read();
	}

	public void setContextRoot(String contextRoot) {
	setValue(ELEMENT_CONTEXTROOT, contextRoot);
	}

	public void setJSPLevel(String jspLevel) {
	setValue(ELEMENT_JSPLEVEL, jspLevel);
	}

	public void setWebContentName(String name) {
	String defaultName = getWebContentName();
	if (defaultName == null \|\| defaultName.length() == 0 \|\| !name.equals(defaultName))
	setValue(ELEMENT_WEBCONTENT, name);
	}

	public void setProjectType(String projectType) {
	setValue(ELEMENT_PROJECTTYPE, projectType);
	}

	public void setLibModules(ILibModule[] libModules) {
	Document doc = getOrCreateDocument();
	Node libModulesNode = findOrCreateChildNode(doc.getDocumentElement(), ELEMENT_LIBMODULES);
	Node firstChild = null;

	// Remove all of the children.
	while ((firstChild = libModulesNode.getFirstChild()) != null)
	libModulesNode.removeChild(firstChild);

	// Add new children.
	for (int i = 0; i < libModules.length; i++) {
	ILibModule iLibModule = libModules[i];
	if (iLibModule != null)
	addLibModule(libModulesNode, iLibModule);
	}
	}

	protected void addLibModule(Node libModulesNode, ILibModule libModule) {
	Document doc = getDOMDocument();
	Element libModuleNode = doc.createElement(ELEMENT_LIBMODULE);
	libModulesNode.appendChild(libModuleNode);
	setValue(libModuleNode, ELEMENT_LIBMODULE_JAR, libModule.getJarName());
	setValue(libModuleNode, ELEMENT_LIBMODULE_PROJECT, libModule.getProjectName());
	}

	public void setFeatureIds(String[] featureIds) {
	Document doc = getOrCreateDocument();
	Node featuresNode = findOrCreateChildNode(doc.getDocumentElement(), ELEMENT_FEATURES);

	// Add new children.
	for (int i = 0; i < featureIds.length; i++) {
	String sFeatureId = featureIds[i];
	if (sFeatureId != null)
	addFeatureId(featuresNode, sFeatureId);
	}
	}

	protected void addFeatureId(Node featuresNode, String featureId) {
	Document doc = getDOMDocument();
	Element featureNode = doc.createElement(ELEMENT_FEATURE);
	featuresNode.appendChild(featureNode);
	setValue(featureNode, ELEMENT_FEATUREID, featureId);
	}

	public boolean isValidWebSettings() {
	return validWebSettings;
	}

	public void removeFeatureId(String removeId) {
	Element root = getRootElement();
	if (root != null) {
	Element featuresNode = findChildNode(root, ELEMENT_FEATURES);
	if (featuresNode != null) {
	NodeList children = featuresNode.getChildNodes();
	ArrayList results = new ArrayList();
	for (int i = 0; i < children.getLength(); i++) {
	Node node = children.item(i);
	String featureId = getFeatureId(node);
	if (featureId != null) {
	// determine if in the list to remove
	if (!(featureId.equals(removeId)))
	results.add(featureId);
	}
	}
	// Remove all of the children.
	Node firstChild = null;
	while ((firstChild = featuresNode.getFirstChild()) != null)
	featuresNode.removeChild(firstChild);
	if (results.size() > 0) {
	String[] updateFeatureIds = (String[]) results.toArray(new String[results.size()]);
	// Add new children.
	for (int i = 0; i < results.size(); i++) {
	String sFeatureId = updateFeatureIds[i];
	if (sFeatureId != null)
	addFeatureId(featuresNode, sFeatureId);
	}
	}
	}
	}
	}

	public String getRootNodeName() {
	return ELEMENT_WEBSETTINGS;
	}
	protected Node findOrCreateChildNode(Element root, String nodeName) {
	Node node = findChildNode(root, nodeName);
	if (node == null) {
	// If the element does not exist yet, create one.
	node = getDOMDocument().createElement(nodeName);
	root.appendChild(node);
	}
	return node;
	}
	protected Element findChildNode(Element parent, String nodeName) {
	NodeList list = parent.getChildNodes();
	int length = list.getLength();
	for (int i = 0; i < length; ++i) {
	Node curNode = list.item(i);
	if (curNode.getNodeType() == Node.ELEMENT_NODE) {
	Element curElement = (Element) curNode;
	if (curElement.getNodeName().equalsIgnoreCase(nodeName))
	return curElement;
	}
	}
	return null;
	}
	protected Element getRootElement() {
	Document doc = getDOMDocument();
	if (doc == null)
	return null;

	Element root = doc.getDocumentElement();
	if (root == null)
	return null;
	if (!root.getNodeName().equalsIgnoreCase(getRootNodeName()))
	return null;
	return root;
	}

	protected Document getOrCreateDocument() {
	Document doc = getDOMDocument();
	if (doc == null) {
	try {
	createNewDocument();
	doc = getDOMDocument();
	} catch (CoreException e) {
	//Ignore
	} catch (IOException e) {
	//Ignore
	}
	}
	return doc;
	}
	public static String getWebContentDirectory(InputStream inputStream) {
	InputStreamReader fileStream = null;
	try {
	fileStream = new InputStreamReader(inputStream, "utf-8"); //$NON-NLS-1$
	DocumentBuilder parser = DocumentBuilderFactory.newInstance().newDocumentBuilder();
	Document fDomDocument = parser.parse(new InputSource(fileStream));
	Element root = fDomDocument.getDocumentElement();
	if (root.getNodeName().equalsIgnoreCase(ELEMENT_WEBSETTINGS)) {
	NodeList list = root.getChildNodes();
	for (int i = 0, length = list.getLength(); i < length; i++) {
	Node node = list.item(i);
	if (node.getNodeName().equals(ELEMENT_WEBCONTENT)) {
	NodeList childNodes = node.getChildNodes();
	for (int j = 0, childLength = childNodes.getLength(); j < childLength; j++) {
	Node curNode = childNodes.item(j);
	if (curNode.getNodeType() == Node.TEXT_NODE) {
	return curNode.getNodeValue();
	}
	}
	return null;
	}
	}
	}
	} catch (UnsupportedEncodingException e) {
	//Ignore
	} catch (ParserConfigurationException e) {
	//Ignore
	} catch (FactoryConfigurationError e) {
	//Ignore
	} catch (SAXException e) {
	//Ignore
	} catch (IOException e) {
	//Ignore
	} catch (Exception e) {
	//Ignore
	} finally {
	if (fileStream != null)
	try {
	fileStream.close();
	} catch (IOException e1) {
	//Ignore
	}
	}
	return null;
	}
	protected Document getDOMDocument() {
	if (fDomDocument == null) {
	try {
	read();
	} catch (IOException e) {
	//Ignore
	}
	}
	return fDomDocument;
	}

	// Version of getDomDocument for use by import
	protected Document getDOMDocument(IFile webSettings) {
	if (fDomDocument == null) {
	try {
	read(webSettings);
	} catch (IOException e) {
	//Ignore
	}
	}
	return fDomDocument;
	}
	protected void read() throws IOException {
	// This following was changed for Defect 212723 The Util StringReader
	// was changed to the InputStreamReader MAY
	IFile settingsFile = getSettingsFile();
	InputStream inputStream = null;
	InputStreamReader fileStream = null;
	if (settingsFile.exists()) {
	try {
	ClassLoader prevClassLoader = Thread.currentThread().getContextClassLoader();
	try {
	Thread.currentThread().setContextClassLoader(getClass().getClassLoader());

	// JZ: fix to defect 240171
	inputStream = settingsFile.getContents(true);
	fileStream = new InputStreamReader(inputStream, "utf-8"); //$NON-NLS-1$

	DocumentBuilder parser = DocumentBuilderFactory.newInstance().newDocumentBuilder();
	fDomDocument = parser.parse(new InputSource(fileStream));
	} finally {
	Thread.currentThread().setContextClassLoader(prevClassLoader);
	}
	/* } catch (JavaModelException e) {
	throw new IOException("file.badFormat"); //$NON-NLS-1$
	*/ } catch (CoreException e) {
	throw new IOException("file.badFormat"); //$NON-NLS-1$
	} catch (SAXException e) {
	throw new IOException("file.badFormat"); //$NON-NLS-1$
	} catch (ParserConfigurationException e) {
	throw new IOException("file.badFormat"); //$NON-NLS-1$
	} finally {
	if (fileStream != null)
	fileStream.close();
	}
	}
	}


	// Version of read for use by import
	protected void read(IFile settings) throws IOException {
	// This following was changed for Defect 212723 The Util StringReader
	// was changed to the InputStreamReader MAY
	IFile settingsFile = settings;

	InputStream inputStream = null;
	InputStreamReader fileStream = null;
	if (settingsFile != null) {
	try {
	ClassLoader prevClassLoader = Thread.currentThread().getContextClassLoader();
	try {
	Thread.currentThread().setContextClassLoader(getClass().getClassLoader());
	inputStream = settingsFile.getContents();
	fileStream = new InputStreamReader(inputStream, "utf-8"); //$NON-NLS-1$

	DocumentBuilder parser = DocumentBuilderFactory.newInstance().newDocumentBuilder();
	fDomDocument = parser.parse(new InputSource(fileStream));
	} finally {
	Thread.currentThread().setContextClassLoader(prevClassLoader);
	}

	} catch (SAXException e) {
	throw new IOException("file.badFormat"); //$NON-NLS-1$
	} catch (ParserConfigurationException e) {
	throw new IOException("file.badFormat"); //$NON-NLS-1$
	} catch (CoreException ce) {
	ce.printStackTrace();
	} finally {
	if (fileStream != null)
	fileStream.close();
	}
	}
	}
	protected void setValue(String nodeName, String value) {
	Document doc = getOrCreateDocument();
	setValue(doc.getDocumentElement(), nodeName, value);
	}
	protected void setValue(Element root, String nodeName, String value) {
	Node node = findOrCreateChildNode(root, nodeName);

	NodeList childNodes = node.getChildNodes();

	if (childNodes.getLength() == 0) {
	Text newText = getDOMDocument().createTextNode(value);
	node.appendChild(newText);
	root.appendChild(node);
	} else {
	for (int i = 0; i < childNodes.getLength(); i++) {
	Node curNode = childNodes.item(i);
	if (curNode.getNodeType() == Node.TEXT_NODE)
	curNode.setNodeValue(value);
	}
	}
	}

	protected String getNodeValue(Element parent, String nodeName) {
	if (parent != null) {
	Element node = findChildNode(parent, nodeName);
	if (node != null)
	return getChildText(node);
	}
	return null;
	}

	protected String getChildText(Element node) {
	NodeList list = node.getChildNodes();
	int length = list.getLength();
	for (int i = 0; i < length; ++i) {
	Node curNode = list.item(i);
	if (curNode.getNodeType() == Node.TEXT_NODE) {
	return curNode.getNodeValue();
	}
	}
	return null;
	}
	public void setVersion(String version) {
	Document doc = getDOMDocument();
	if (doc == null)
	return;

	Element root = doc.getDocumentElement();
	if (root == null)
	return;

	if (!root.getNodeName().equalsIgnoreCase(getRootNodeName()))
	return;

	root.setAttribute(ELEMENT_WORKSPACE_VERSION, version); //$NON-NLS-1$
	}
	public void write() throws CoreException {
	if (fDomDocument == null)
	return;

	ByteArrayOutputStream outStream = new ByteArrayOutputStream();

	try {
	TransformerFactory factory = TransformerFactory.newInstance();
	Transformer transformer = factory.newTransformer();
	transformer.setOutputProperty(OutputKeys.INDENT, "yes"); //$NON-NLS-1$
	transformer.transform(new DOMSource(fDomDocument.getDocumentElement()), new StreamResult(outStream));
	} catch (TransformerConfigurationException e) {
	Logger.getLogger().logError(e);
	} catch (TransformerFactoryConfigurationError e) {
	Logger.getLogger().logError(e);
	} catch (TransformerException e) {
	Logger.getLogger().logError(e);
	}

	InputStream sourceStream = new ByteArrayInputStream(outStream.toByteArray());

	IFile settingsFile = getSettingsFile();
	if (settingsFile.exists())
	settingsFile.setContents(sourceStream, true, true, null);
	else
	settingsFile.create(sourceStream, true, null);
	}
	public String getVersion() {
	Document doc = getDOMDocument();
	if (doc == null)
	return null;

	Element root = doc.getDocumentElement();
	if (root == null)
	return null;
	if (!root.getNodeName().equalsIgnoreCase(getRootNodeName()))
	return null;

	return root.getAttribute(ELEMENT_WORKSPACE_VERSION); //$NON-NLS-1$
	}
	}