| /******************************************************************************* |
| * Copyright (c) 2000, 2017 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.update.internal.configurator; |
| |
| |
| import java.io.*; |
| |
| import javax.xml.parsers.*; |
| |
| import org.eclipse.osgi.util.NLS; |
| import org.xml.sax.*; |
| import org.xml.sax.helpers.*; |
| |
| /** |
| * Parse default feature.xml |
| */ |
| |
| public class PluginParser extends DefaultHandler implements IConfigurationConstants { |
| private final static SAXParserFactory parserFactory = |
| SAXParserFactory.newInstance(); |
| private SAXParser parser; |
| private PluginEntry pluginEntry; |
| private String location; |
| |
| private class ParseCompleteException extends SAXException { |
| |
| private static final long serialVersionUID = 1L; |
| |
| public ParseCompleteException(String arg0) { |
| super(arg0); |
| } |
| } |
| |
| /** |
| * Constructor for DefaultFeatureParser |
| */ |
| public PluginParser() { |
| super(); |
| try { |
| parserFactory.setNamespaceAware(true); |
| this.parser = parserFactory.newSAXParser(); |
| } catch (ParserConfigurationException e) { |
| System.out.println(e); |
| } catch (SAXException e) { |
| System.out.println(e); |
| } |
| } |
| |
| /** |
| * @since 2.0 |
| */ |
| public synchronized PluginEntry parse(File pluginFile) throws SAXException, IOException { |
| FileInputStream in = null; |
| try{ |
| in = new FileInputStream(pluginFile); |
| return parse(in, PLUGINS + "/" + pluginFile.getParentFile().getName() + "/"); //$NON-NLS-1$ //$NON-NLS-2$ |
| }finally{ |
| if (in != null){ |
| try{ |
| in.close(); |
| }catch(IOException e){ |
| } |
| } |
| } |
| } |
| /** |
| * @since 3.0 |
| */ |
| public synchronized PluginEntry parse(InputStream in, String bundleUrl) throws SAXException, IOException { |
| try { |
| location = bundleUrl; |
| pluginEntry = new PluginEntry(); |
| pluginEntry.setURL(bundleUrl); |
| parser.parse(new InputSource(in), this); |
| } catch (ParseCompleteException e) { |
| // expected, we stopped the parsing when we have the information we need |
| /// no need to pursue the parsing |
| } |
| return pluginEntry; |
| } |
| |
| @Override |
| public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException { |
| |
| String tag = localName.trim(); |
| |
| if (tag.equalsIgnoreCase(CFG_PLUGIN)) { |
| pluginEntry.isFragment(false); |
| processPlugin(attributes); |
| return; |
| } |
| |
| if (tag.equalsIgnoreCase(CFG_FRAGMENT)) { |
| pluginEntry.isFragment(true); |
| processPlugin(attributes); |
| return; |
| } |
| } |
| |
| /** |
| * process plugin entry info |
| */ |
| private void processPlugin(Attributes attributes) throws ParseCompleteException { |
| String id = attributes.getValue("id"); //$NON-NLS-1$ |
| String version = attributes.getValue("version"); //$NON-NLS-1$ |
| if (id == null || id.trim().length() == 0) { |
| id = "_no_id_"; //$NON-NLS-1$ |
| Utils.log(NLS.bind(Messages.PluginParser_plugin_no_id, (new String[] { location }))); |
| } |
| if (version == null || version.trim().length() == 0) { |
| version = "0.0.0"; //$NON-NLS-1$ |
| Utils.log(NLS.bind(Messages.PluginParser_plugin_no_version, (new String[] { location }))); |
| } |
| pluginEntry.setVersionedIdentifier(new VersionedIdentifier(id, version)); |
| |
| // stop parsing now |
| throw new ParseCompleteException(""); //$NON-NLS-1$ |
| } |
| } |