plugins/org.eclipse.jst.server.tomcat.core/tomcatcore/org/eclipse/jst/server/tomcat/core/internal/xml/XMLUtil.java - servertools/webtools.servertools - Git at Google

 /*******************************************************************************
  * Copyright (c) 2003, 2011 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.server.tomcat.core.internal.xml;

 import java.io.*;
 import java.util.*;

 import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;
 import javax.xml.parsers.ParserConfigurationException;

 import org.eclipse.jst.server.tomcat.core.internal.Trace;
 import org.w3c.dom.*;
 import org.xml.sax.EntityResolver;
 import org.xml.sax.InputSource;
 import org.xml.sax.SAXException;
 /**
  * Utility class to create and read XML documents.
  */
 public class XMLUtil {
 	private static DocumentBuilder documentBuilder;

 	/**
 	 * XMLUtil constructor comment.
 	 */
 	public XMLUtil() {
 		super();
 	}

 	public static DocumentBuilder getDocumentBuilder() {
 		if (documentBuilder == null)
 			try {
 				DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
 				factory.setValidating(false);
 				factory.setNamespaceAware(false);
 				factory.setExpandEntityReferences(false);
 				// In case we happen to have a Xerces parser, try to set the feature that allows Java encodings to be used
 				try {
 					factory.setFeature("http://apache.org/xml/features/allow-java-encodings", true);
 				}
 				catch (ParserConfigurationException e) {
 					// Ignore if feature isn't supported
 				}
 				//factory.setAttribute("http://apache.org/xml/features/nonvalidating/load-external-dtd", new Boolean(false));
 				documentBuilder = factory.newDocumentBuilder();
 				documentBuilder.setEntityResolver(new EntityResolver() {
 					public InputSource resolveEntity(String publicId, String systemId) throws SAXException, IOException {
 						return new InputSource(new ByteArrayInputStream(new byte[0]));
 					}
 				});
 			} catch (Exception e) {
 				Trace.trace(Trace.SEVERE, "Rrror creating document builder");
 			}

 		return documentBuilder;
 	}

 	/**
 	 * Create a child of the given node at the given index.
 	 *
 	 * @param doc a document
 	 * @param element an element
 	 * @param index an index
 	 * @param nodeName a node name
 	 * @return org.w3c.dom.Element
 	 */
 	public static Element createChildElement(Document doc, Element element, int index, String nodeName) {
 		Element element2 = doc.createElement(nodeName);
 		try {
 			NodeList childList = element.getElementsByTagName(nodeName);
 			Node child = childList.item(index);
 			element.insertBefore(element2, child);
 		} catch (Exception e) {
 			element.appendChild(element2);
 		}
 		return element2;
 	}

 	/**
 	 * Create a child of the given node.
 	 *
 	 * @param doc a document
 	 * @param node a node
 	 * @param nodeName a node name
 	 * @return org.w3c.dom.Element
 	 */
 	public static Element createChildElement(Document doc, Node node, String nodeName) {
 		Element element = doc.createElement(nodeName);
 		node.appendChild(element);
 		return element;
 	}

 	/*
 	 * Set the value of the given node to the given text.
 	 */
 	public static void createTextChildElement(Document doc, Node node, String name, String value) {
 		Element element = createChildElement(doc, node, name);
 		element.appendChild(doc.createTextNode(value));
 	}

 	/**
 	 * Return the attribute value.
 	 * @return java.lang.String
 	 * @param element org.w3c.dom.Element
 	 * @param attr java.lang.String
 	 */
 	public static String getAttributeValue(Element element, String attr) {
 		return element.getAttributeNode(attr).getValue();
 	}

 	public static byte[] getContents(Document document) throws IOException {
 		ByteArrayOutputStream out = new ByteArrayOutputStream();
 		try {
 			print(new PrintStream(out, true, "UTF-8"), document);
 			return out.toByteArray();
 		} catch (Exception ex) {
 			throw new IOException(ex.getLocalizedMessage());
 		} finally {
 			if (out != null)
 				try {
 					out.close();
 				} catch (Exception e) {
 					// ignore
 				}
 		}
 	}

 	protected static String getDocumentTypeData(DocumentType doctype) {
 		String data = doctype.getName();
 		if (doctype.getPublicId() != null) {
 			data += " PUBLIC \"" + doctype.getPublicId() + "\"";
 			String systemId = doctype.getSystemId();
 			if (systemId == null)
 				systemId = "";
 			data += " \"" + systemId + "\"";
 		} else
 			data += " SYSTEM \"" + doctype.getSystemId() + "\"";

 		return data;
 	}

 	/**
 	 * Return an iterator for the subelements.
 	 * @return java.util.Iterator
 	 * @param element org.w3c.dom.Element
 	 * @param name java.lang.String
 	 */
 	public static Iterator getNodeIterator(Element element, String name) {
 		List<Node> list = new ArrayList<Node>();
 		NodeList nodeList = element.getElementsByTagName(name);

 		int length = nodeList.getLength();
 		for (int i = 0; i < length; i++)
 			list.add(nodeList.item(i));

 		return list.iterator();
 	}

 	/**
 	 * Get the value of this node. Will return "" instead of null.
 	 * @return java.lang.String
 	 * @param node org.w3c.dom.Node
 	 */
 	public static String getNodeValue(Node node) {
 		NodeList nodeList = node.getChildNodes();

 		int length = nodeList.getLength();
 		for (int i = 0; i < length; i++) {
 			Node n = nodeList.item(i);
 			if (n instanceof Text) {
 				Text t = (Text) n;
 				return t.getNodeValue();
 			}
 		}
 		return "";
 	}

 	/*
 	 * Get the value of a subnode.

 	 * @return java.lang.String
 	 */
 	public static String getSubNodeValue(Element element, String name) {
 		NodeList nodeList = element.getElementsByTagName(name);
 		return getNodeValue(nodeList.item(0)).trim();
 	}

 	/*
 	 * Insert the given text.
 	 */
 	public static void insertText(Document doc, Node node, String text) {
 		node.appendChild(doc.createCDATASection(text));
 	}

 	protected static String normalize(String s) {
 		StringBuffer stringbuffer = new StringBuffer();
 		int i = s == null ? 0 : s.length();
 		for (int j = 0; j < i; j++) {
 			char c = s.charAt(j);
 			switch (c) {
 				case 60 : /* '<' */
 					stringbuffer.append("&lt;");
 					break;

 				case 62 : /* '>' */
 					stringbuffer.append("&gt;");
 					break;

 				case 38 : /* '&' */
 					stringbuffer.append("&amp;");
 					break;

 				case 34 : /* '"' */
 					stringbuffer.append("&quot;");
 					break;

 				case 10 : /* '\n' */
 				case 13 : /* '\r' */
 				default :
 					stringbuffer.append(c);
 					break;

 			}
 		}

 		return stringbuffer.toString();
 	}

 	protected static void print(PrintStream out, Node node) {
 		if (node == null)
 			return;
 		short type = node.getNodeType();
 		switch (type) {
 			case Node.DOCUMENT_NODE: {
 				out.println("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
 				//out.println("<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>\n");
 				NodeList nodelist = node.getChildNodes();
 				int size = nodelist.getLength();
 				for (int i = 0; i < size; i++)
 					print(out, nodelist.item(i));
 				break;
 			}

 			case Node.DOCUMENT_TYPE_NODE: {
 				DocumentType docType = (DocumentType) node;
 				out.print("<!DOCTYPE " + getDocumentTypeData(docType) + ">\n");
 				break;
 			}

 			case Node.ELEMENT_NODE: {
 				out.print('<');
 				out.print(node.getNodeName());
 				NamedNodeMap map = node.getAttributes();
 				if (map != null) {
 					int size = map.getLength();
 					for (int i = 0; i < size; i++) {
 						Attr attr = (Attr) map.item(i);
 						out.print(' ');
 						out.print(attr.getNodeName());
 						out.print("=\"");
 						out.print(normalize(attr.getNodeValue()));
 						out.print('"');
 					}
 				}

 				if (!node.hasChildNodes())
 					out.print("/>");
 				else {
 					out.print('>');
 					NodeList nodelist = node.getChildNodes();
 					int numChildren = nodelist.getLength();
 					for (int i = 0; i < numChildren; i++)
 						print(out, nodelist.item(i));

 					out.print("</");
 					out.print(node.getNodeName());
 					out.print('>');
 				}
 				break;
 			}

 			case Node.ENTITY_REFERENCE_NODE: {
 				NodeList nodelist = node.getChildNodes();
 				if (nodelist != null) {
 					int size = nodelist.getLength();
 					for (int i = 0; i < size; i++)
 						print(out, nodelist.item(i));

 				}
 				break;
 			}

 			case Node.CDATA_SECTION_NODE: {
 				out.print(normalize(node.getNodeValue()));
 				break;
 			}

 			case Node.TEXT_NODE: {
 				out.print(normalize(node.getNodeValue()));
 				break;
 			}

 			case Node.PROCESSING_INSTRUCTION_NODE: {
 				out.print("<?");
 				out.print(node.getNodeName());
 				String s = node.getNodeValue();
 				if (s != null && s.length() > 0) {
 					out.print(' ');
 					out.print(s);
 				}
 				out.print("?>");
 				break;
 			}

 			case Node.COMMENT_NODE: {
 				out.print("<!--");
 				out.print(node.getNodeValue());
 				out.print("-->");
 				break;
 			}

 			default: {
 				out.print(normalize(node.getNodeValue()));
 				break;
 			}
 		}
 		out.flush();
 	}

 	public static void save(String filename, Document document) throws IOException {
 		PrintStream out = null;
 		try {
 			out = new PrintStream(new BufferedOutputStream(new FileOutputStream(filename)), true, "UTF-8");
 			//traceNode(document, "");
 			print(out, document);
 		} catch (Exception ex) {
 			throw new IOException(ex.getLocalizedMessage());
 		} finally {
 			if (out != null)
 				try {
 					out.close();
 				} catch (Exception e) {
 					// ignore
 				}
 		}
 	}

 	public static void save(String filename, Node node) throws IOException {
 		PrintStream out = null;
 		try {
 			out = new PrintStream(new BufferedOutputStream(new FileOutputStream(filename)), true, "UTF-8");
 			print(out, node);
 		} catch (Exception ex) {
 			throw new IOException(ex.getLocalizedMessage());
 		} finally {
 			if (out != null)
 				try {
 					out.close();
 				} catch (Exception e) {
 					// ignore
 				}
 		}
 	}

 	/*
 	 * Set the value of the subnode
 	 *
 	 * @param name java.lang.String
 	 * @param value java.lang.String
 	 */
 	public static void setNodeValue(Node node, String name, String value) {
 		String s = node.getNodeValue();
 		if (s != null) {
 			node.setNodeValue(value);
 			return;
 		}
 		NodeList nodelist = node.getChildNodes();
 		for (int i = 0; i < nodelist.getLength(); i++) {
 			if (nodelist.item(i) instanceof Text) {
 				Text text = (Text) nodelist.item(i);
 				text.setData(value);
 				return;
 			}
 		}
 		return;
 	}

 	public static String toString(Document document) {
 		PrintStream out = null;
 		try {
 			ByteArrayOutputStream baos = new ByteArrayOutputStream(2048);
 			out = new PrintStream(baos);
 			print(out, document);
 			return new String(baos.toByteArray(), "UTF-8");
 		} catch (Exception ex) {
 			// ignore
 		} finally {
 			if (out != null)
 				try {
 					out.close();
 				} catch (Exception e) {
 					// ignore
 				}
 		}
 		return null;
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2003, 2011 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.server.tomcat.core.internal.xml;

	import java.io.*;
	import java.util.*;

	import javax.xml.parsers.DocumentBuilder;
	import javax.xml.parsers.DocumentBuilderFactory;
	import javax.xml.parsers.ParserConfigurationException;

	import org.eclipse.jst.server.tomcat.core.internal.Trace;
	import org.w3c.dom.*;
	import org.xml.sax.EntityResolver;
	import org.xml.sax.InputSource;
	import org.xml.sax.SAXException;
	/**
	* Utility class to create and read XML documents.
	*/
	public class XMLUtil {
	private static DocumentBuilder documentBuilder;

	/**
	* XMLUtil constructor comment.
	*/
	public XMLUtil() {
	super();
	}

	public static DocumentBuilder getDocumentBuilder() {
	if (documentBuilder == null)
	try {
	DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
	factory.setValidating(false);
	factory.setNamespaceAware(false);
	factory.setExpandEntityReferences(false);
	// In case we happen to have a Xerces parser, try to set the feature that allows Java encodings to be used
	try {
	factory.setFeature("http://apache.org/xml/features/allow-java-encodings", true);
	}
	catch (ParserConfigurationException e) {
	// Ignore if feature isn't supported
	}
	//factory.setAttribute("http://apache.org/xml/features/nonvalidating/load-external-dtd", new Boolean(false));
	documentBuilder = factory.newDocumentBuilder();
	documentBuilder.setEntityResolver(new EntityResolver() {
	public InputSource resolveEntity(String publicId, String systemId) throws SAXException, IOException {
	return new InputSource(new ByteArrayInputStream(new byte[0]));
	}
	});
	} catch (Exception e) {
	Trace.trace(Trace.SEVERE, "Rrror creating document builder");
	}

	return documentBuilder;
	}

	/**
	* Create a child of the given node at the given index.
	*
	* @param doc a document
	* @param element an element
	* @param index an index
	* @param nodeName a node name
	* @return org.w3c.dom.Element
	*/
	public static Element createChildElement(Document doc, Element element, int index, String nodeName) {
	Element element2 = doc.createElement(nodeName);
	try {
	NodeList childList = element.getElementsByTagName(nodeName);
	Node child = childList.item(index);
	element.insertBefore(element2, child);
	} catch (Exception e) {
	element.appendChild(element2);
	}
	return element2;
	}

	/**
	* Create a child of the given node.
	*
	* @param doc a document
	* @param node a node
	* @param nodeName a node name
	* @return org.w3c.dom.Element
	*/
	public static Element createChildElement(Document doc, Node node, String nodeName) {
	Element element = doc.createElement(nodeName);
	node.appendChild(element);
	return element;
	}

	/*
	* Set the value of the given node to the given text.
	*/
	public static void createTextChildElement(Document doc, Node node, String name, String value) {
	Element element = createChildElement(doc, node, name);
	element.appendChild(doc.createTextNode(value));
	}

	/**
	* Return the attribute value.
	* @return java.lang.String
	* @param element org.w3c.dom.Element
	* @param attr java.lang.String
	*/
	public static String getAttributeValue(Element element, String attr) {
	return element.getAttributeNode(attr).getValue();
	}

	public static byte[] getContents(Document document) throws IOException {
	ByteArrayOutputStream out = new ByteArrayOutputStream();
	try {
	print(new PrintStream(out, true, "UTF-8"), document);
	return out.toByteArray();
	} catch (Exception ex) {
	throw new IOException(ex.getLocalizedMessage());
	} finally {
	if (out != null)
	try {
	out.close();
	} catch (Exception e) {
	// ignore
	}
	}
	}

	protected static String getDocumentTypeData(DocumentType doctype) {
	String data = doctype.getName();
	if (doctype.getPublicId() != null) {
	data += " PUBLIC \"" + doctype.getPublicId() + "\"";
	String systemId = doctype.getSystemId();
	if (systemId == null)
	systemId = "";
	data += " \"" + systemId + "\"";
	} else
	data += " SYSTEM \"" + doctype.getSystemId() + "\"";

	return data;
	}

	/**
	* Return an iterator for the subelements.
	* @return java.util.Iterator
	* @param element org.w3c.dom.Element
	* @param name java.lang.String
	*/
	public static Iterator getNodeIterator(Element element, String name) {
	List<Node> list = new ArrayList<Node>();
	NodeList nodeList = element.getElementsByTagName(name);

	int length = nodeList.getLength();
	for (int i = 0; i < length; i++)
	list.add(nodeList.item(i));

	return list.iterator();
	}

	/**
	* Get the value of this node. Will return "" instead of null.
	* @return java.lang.String
	* @param node org.w3c.dom.Node
	*/
	public static String getNodeValue(Node node) {
	NodeList nodeList = node.getChildNodes();

	int length = nodeList.getLength();
	for (int i = 0; i < length; i++) {
	Node n = nodeList.item(i);
	if (n instanceof Text) {
	Text t = (Text) n;
	return t.getNodeValue();
	}
	}
	return "";
	}

	/*
	* Get the value of a subnode.

	* @return java.lang.String
	*/
	public static String getSubNodeValue(Element element, String name) {
	NodeList nodeList = element.getElementsByTagName(name);
	return getNodeValue(nodeList.item(0)).trim();
	}

	/*
	* Insert the given text.
	*/
	public static void insertText(Document doc, Node node, String text) {
	node.appendChild(doc.createCDATASection(text));
	}

	protected static String normalize(String s) {
	StringBuffer stringbuffer = new StringBuffer();
	int i = s == null ? 0 : s.length();
	for (int j = 0; j < i; j++) {
	char c = s.charAt(j);
	switch (c) {
	case 60 : /* '<' */
	stringbuffer.append("<");
	break;

	case 62 : /* '>' */
	stringbuffer.append(">");
	break;

	case 38 : /* '&' */
	stringbuffer.append("&");
	break;

	case 34 : /* '"' */
	stringbuffer.append(""");
	break;

	case 10 : /* '\n' */
	case 13 : /* '\r' */
	default :
	stringbuffer.append(c);
	break;

	}
	}

	return stringbuffer.toString();
	}

	protected static void print(PrintStream out, Node node) {
	if (node == null)
	return;
	short type = node.getNodeType();
	switch (type) {
	case Node.DOCUMENT_NODE: {
	out.println("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
	//out.println("<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>\n");
	NodeList nodelist = node.getChildNodes();
	int size = nodelist.getLength();
	for (int i = 0; i < size; i++)
	print(out, nodelist.item(i));
	break;
	}

	case Node.DOCUMENT_TYPE_NODE: {
	DocumentType docType = (DocumentType) node;
	out.print("<!DOCTYPE " + getDocumentTypeData(docType) + ">\n");
	break;
	}

	case Node.ELEMENT_NODE: {
	out.print('<');
	out.print(node.getNodeName());
	NamedNodeMap map = node.getAttributes();
	if (map != null) {
	int size = map.getLength();
	for (int i = 0; i < size; i++) {
	Attr attr = (Attr) map.item(i);
	out.print(' ');
	out.print(attr.getNodeName());
	out.print("=\"");
	out.print(normalize(attr.getNodeValue()));
	out.print('"');
	}
	}

	if (!node.hasChildNodes())
	out.print("/>");
	else {
	out.print('>');
	NodeList nodelist = node.getChildNodes();
	int numChildren = nodelist.getLength();
	for (int i = 0; i < numChildren; i++)
	print(out, nodelist.item(i));

	out.print("</");
	out.print(node.getNodeName());
	out.print('>');
	}
	break;
	}

	case Node.ENTITY_REFERENCE_NODE: {
	NodeList nodelist = node.getChildNodes();
	if (nodelist != null) {
	int size = nodelist.getLength();
	for (int i = 0; i < size; i++)
	print(out, nodelist.item(i));

	}
	break;
	}

	case Node.CDATA_SECTION_NODE: {
	out.print(normalize(node.getNodeValue()));
	break;
	}

	case Node.TEXT_NODE: {
	out.print(normalize(node.getNodeValue()));
	break;
	}

	case Node.PROCESSING_INSTRUCTION_NODE: {
	out.print("<?");
	out.print(node.getNodeName());
	String s = node.getNodeValue();
	if (s != null && s.length() > 0) {
	out.print(' ');
	out.print(s);
	}
	out.print("?>");
	break;
	}

	case Node.COMMENT_NODE: {
	out.print("<!--");
	out.print(node.getNodeValue());
	out.print("-->");
	break;
	}

	default: {
	out.print(normalize(node.getNodeValue()));
	break;
	}
	}
	out.flush();
	}

	public static void save(String filename, Document document) throws IOException {
	PrintStream out = null;
	try {
	out = new PrintStream(new BufferedOutputStream(new FileOutputStream(filename)), true, "UTF-8");
	//traceNode(document, "");
	print(out, document);
	} catch (Exception ex) {
	throw new IOException(ex.getLocalizedMessage());
	} finally {
	if (out != null)
	try {
	out.close();
	} catch (Exception e) {
	// ignore
	}
	}
	}

	public static void save(String filename, Node node) throws IOException {
	PrintStream out = null;
	try {
	out = new PrintStream(new BufferedOutputStream(new FileOutputStream(filename)), true, "UTF-8");
	print(out, node);
	} catch (Exception ex) {
	throw new IOException(ex.getLocalizedMessage());
	} finally {
	if (out != null)
	try {
	out.close();
	} catch (Exception e) {
	// ignore
	}
	}
	}

	/*
	* Set the value of the subnode
	*
	* @param name java.lang.String
	* @param value java.lang.String
	*/
	public static void setNodeValue(Node node, String name, String value) {
	String s = node.getNodeValue();
	if (s != null) {
	node.setNodeValue(value);
	return;
	}
	NodeList nodelist = node.getChildNodes();
	for (int i = 0; i < nodelist.getLength(); i++) {
	if (nodelist.item(i) instanceof Text) {
	Text text = (Text) nodelist.item(i);
	text.setData(value);
	return;
	}
	}
	return;
	}

	public static String toString(Document document) {
	PrintStream out = null;
	try {
	ByteArrayOutputStream baos = new ByteArrayOutputStream(2048);
	out = new PrintStream(baos);
	print(out, document);
	return new String(baos.toByteArray(), "UTF-8");
	} catch (Exception ex) {
	// ignore
	} finally {
	if (out != null)
	try {
	out.close();
	} catch (Exception e) {
	// ignore
	}
	}
	return null;
	}
	}