| /******************************************************************************* |
| * Copyright (c) 2006 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.update.internal.core; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.ArrayList; |
| |
| import javax.xml.parsers.ParserConfigurationException; |
| import javax.xml.parsers.SAXParser; |
| import javax.xml.parsers.SAXParserFactory; |
| |
| import org.eclipse.core.runtime.MultiStatus; |
| import org.eclipse.update.core.model.FeatureModelFactory; |
| import org.xml.sax.Attributes; |
| import org.xml.sax.InputSource; |
| import org.xml.sax.SAXException; |
| import org.xml.sax.SAXParseException; |
| import org.xml.sax.helpers.DefaultHandler; |
| |
| public class DigestParser extends DefaultHandler { |
| |
| private InternalFeatureParser featureParser; |
| |
| private ArrayList featureModels; |
| |
| private SAXParser parser; |
| |
| private FeatureModelFactory factory; |
| |
| private String location; |
| |
| private final static SAXParserFactory parserFactory = |
| SAXParserFactory.newInstance(); |
| |
| public DigestParser() { |
| super(); |
| featureParser = new InternalFeatureParser(); |
| try { |
| parserFactory.setNamespaceAware(true); |
| this.parser = parserFactory.newSAXParser(); |
| } catch (ParserConfigurationException e) { |
| UpdateCore.log(e); |
| } catch (SAXException e) { |
| UpdateCore.log(e); |
| } |
| } |
| |
| public void init(FeatureModelFactory factory) { |
| init(factory, null); |
| } |
| |
| /** |
| * @param factory |
| * @param location |
| * @since 3.1 |
| */ |
| public void init(FeatureModelFactory factory, String location) { |
| |
| this.factory = factory; |
| this.location = location; |
| factory = new LiteFeatureFactory(); |
| featureModels = new ArrayList(); |
| featureParser.internalInit(factory, location); |
| } |
| |
| /** |
| * Parses the specified input steam and constructs a feature model. |
| * The input stream is not closed as part of this operation. |
| * |
| * @param in input stream |
| * @return feature model |
| * @exception SAXException |
| * @exception IOException |
| * @since 2.0 |
| */ |
| public LiteFeature[] parse(InputStream in) throws SAXException, IOException { |
| |
| parser.parse(new InputSource(in), this); |
| return (LiteFeature[])featureModels.toArray( new LiteFeature[featureModels.size()]); |
| } |
| |
| |
| /** |
| * Returns all status objects accumulated by the parser. |
| * |
| * @return multi-status containing accumulated status, or <code>null</code>. |
| * @since 2.0 |
| */ |
| public MultiStatus getStatus() { |
| return featureParser.getStatus(); |
| } |
| |
| /** |
| * Handle start of element tags |
| * @see DefaultHandler#startElement(String, String, String, Attributes) |
| * @since 2.0 |
| */ |
| public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException { |
| if(localName.equals("digest")) //$NON-NLS-1$ |
| return; |
| if(localName.equals("feature")) //$NON-NLS-1$ |
| featureParser.internalInit(factory, location); |
| |
| featureParser.startElement(uri, localName, qName, attributes); |
| } |
| |
| /** |
| * Handle end of element tags |
| * @see DefaultHandler#endElement(String, String, String) |
| * @since 2.0 |
| */ |
| public void endElement(String uri, String localName, String qName) { |
| if(localName.equals("digest")) //$NON-NLS-1$ |
| return; |
| featureParser.endElement(uri, localName, qName); |
| if(localName.equals("feature")) { //$NON-NLS-1$ |
| try { |
| featureModels.add(featureParser.getFeatureModel()); |
| } catch (SAXException e) { |
| e.printStackTrace(); |
| } |
| } |
| } |
| |
| |
| /** |
| * Handle character text |
| * @see DefaultHandler#characters(char[], int, int) |
| * @since 2.0 |
| */ |
| public void characters(char[] ch, int start, int length) { |
| featureParser.characters(ch, start, length); |
| } |
| |
| /** |
| * Handle errors |
| * @see DefaultHandler#error(SAXParseException) |
| * @since 2.0 |
| */ |
| public void error(SAXParseException ex) { |
| featureParser.error(ex); |
| } |
| |
| /** |
| * Handle fatal errors |
| * @see DefaultHandler#fatalError(SAXParseException) |
| * @exception SAXException |
| * @since 2.0 |
| */ |
| public void fatalError(SAXParseException ex) throws SAXException { |
| featureParser.fatalError(ex); |
| } |
| |
| /** |
| * @see org.xml.sax.ContentHandler#ignorableWhitespace(char[], int, int) |
| */ |
| public void ignorableWhitespace(char[] arg0, int arg1, int arg2) throws SAXException { |
| featureParser.ignorableWhitespace(arg0, arg1, arg2); |
| } |
| } |