| /******************************************************************************* |
| * Copyright (c) 2007 Chase Technology Ltd - http://www.chasetechnology.co.uk |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Doug Satchwell (Chase Technology Ltd) - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.wst.xsl.launching.config; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| 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.TransformerException; |
| import javax.xml.transform.TransformerFactory; |
| import javax.xml.transform.dom.DOMSource; |
| import javax.xml.transform.stream.StreamResult; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.wst.xsl.internal.launching.LaunchingPlugin; |
| import org.w3c.dom.Document; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.Node; |
| import org.w3c.dom.NodeList; |
| import org.xml.sax.InputSource; |
| import org.xml.sax.SAXException; |
| import org.xml.sax.helpers.DefaultHandler; |
| |
| /** |
| * @since 1.0 |
| */ |
| public class PreferenceUtil |
| { |
| |
| public static void createCoreException(Throwable e) throws CoreException |
| { |
| throw new CoreException(new Status(IStatus.ERROR, LaunchingPlugin.PLUGIN_ID, 0, e.getMessage(), e)); |
| } |
| |
| public static Document getDocument() throws ParserConfigurationException |
| { |
| DocumentBuilderFactory dfactory = DocumentBuilderFactory.newInstance(); |
| DocumentBuilder docBuilder = dfactory.newDocumentBuilder(); |
| Document doc = docBuilder.newDocument(); |
| return doc; |
| } |
| |
| public static String serializeDocument(Document doc) throws IOException, TransformerException |
| { |
| ByteArrayOutputStream s = new ByteArrayOutputStream(); |
| |
| TransformerFactory factory = TransformerFactory.newInstance(); |
| Transformer transformer = factory.newTransformer(); |
| transformer.setOutputProperty(OutputKeys.METHOD, "xml"); //$NON-NLS-1$ |
| transformer.setOutputProperty(OutputKeys.INDENT, "yes"); //$NON-NLS-1$ |
| |
| DOMSource source = new DOMSource(doc); |
| StreamResult outputTarget = new StreamResult(s); |
| transformer.transform(source, outputTarget); |
| |
| return s.toString("UTF8"); //$NON-NLS-1$ |
| } |
| |
| public static Element[] getChildElements(Element parent, String name) |
| { |
| List<Element> children = new ArrayList<Element>(); |
| NodeList list = parent.getChildNodes(); |
| int length = list.getLength(); |
| for (int i = 0; i < length; ++i) |
| { |
| Node node = list.item(i); |
| short type = node.getNodeType(); |
| if (type == Node.ELEMENT_NODE) |
| { |
| Element processorElement = (Element) node; |
| if (processorElement.getNodeName().equals(name)) |
| { |
| children.add(processorElement); |
| } |
| } |
| } |
| return children.toArray(new Element[0]); |
| } |
| |
| public static String getNodeText(Node node) |
| { |
| switch (node.getNodeType()) |
| { |
| case Node.ELEMENT_NODE: |
| NodeList childNodes = node.getChildNodes(); |
| StringBuffer sb = new StringBuffer(); |
| for (int i = 0; i < childNodes.getLength(); i++) |
| { |
| Node child = childNodes.item(i); |
| if (child.getNodeType() == Node.TEXT_NODE) |
| { |
| sb.append(child.getNodeValue()); |
| } |
| } |
| return sb.toString(); |
| case Node.TEXT_NODE: |
| case Node.ATTRIBUTE_NODE: |
| default: |
| return node.getNodeValue(); |
| } |
| } |
| |
| public static Document getDocument(InputStream stream) throws CoreException |
| { |
| Document doc = null; |
| try |
| { |
| DocumentBuilder parser = DocumentBuilderFactory.newInstance().newDocumentBuilder(); |
| parser.setErrorHandler(new DefaultHandler()); |
| doc = parser.parse(new InputSource(stream)); |
| } |
| catch (SAXException e) |
| { |
| PreferenceUtil.createCoreException(e); |
| } |
| catch (IOException e) |
| { |
| PreferenceUtil.createCoreException(e); |
| } |
| catch (ParserConfigurationException e) |
| { |
| PreferenceUtil.createCoreException(e); |
| } |
| catch (FactoryConfigurationError e) |
| { |
| PreferenceUtil.createCoreException(e); |
| } |
| finally |
| { |
| try |
| { |
| stream.close(); |
| } |
| catch (IOException e) |
| { |
| PreferenceUtil.createCoreException(e); |
| } |
| } |
| return doc; |
| } |
| } |