| /******************************************************************************* |
| * Copyright (c) 2007, 2008 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 |
| * Genuitec, LLC - added license support |
| *******************************************************************************/ |
| package org.eclipse.equinox.internal.provisional.p2.ui; |
| |
| import java.io.*; |
| import java.math.BigInteger; |
| import java.util.*; |
| import javax.xml.parsers.*; |
| import org.eclipse.equinox.internal.p2.ui.ProvUIMessages; |
| import org.eclipse.equinox.internal.provisional.p2.metadata.IInstallableUnit; |
| import org.eclipse.equinox.internal.provisional.p2.metadata.License; |
| import org.eclipse.equinox.internal.provisional.p2.ui.policy.LicenseManager; |
| import org.eclipse.equinox.internal.provisional.p2.ui.query.IUPropertyUtils; |
| import org.eclipse.ui.statushandlers.StatusManager; |
| import org.w3c.dom.*; |
| import org.xml.sax.SAXException; |
| |
| /** |
| * SimpleLicenseManager is a license manager that keeps track of |
| * IInstallableUnit licenses by using the digests of the IU's licenses. |
| * It can read and write its accepted list to a stream. |
| * |
| * @since 3.4 |
| */ |
| public class SimpleLicenseManager extends LicenseManager { |
| java.util.Set accepted = new HashSet(); |
| |
| public boolean accept(IInstallableUnit iu) { |
| License license = IUPropertyUtils.getLicense(iu); |
| if (license != null) |
| accepted.add(license.getDigest()); |
| return true; |
| } |
| |
| public boolean reject(IInstallableUnit iu) { |
| License license = IUPropertyUtils.getLicense(iu); |
| if (license != null) |
| accepted.remove(license.getDigest()); |
| return true; |
| } |
| |
| public boolean isAccepted(IInstallableUnit iu) { |
| License license = IUPropertyUtils.getLicense(iu); |
| if (license == null) |
| return true; |
| return accepted.contains(license.getDigest()); |
| } |
| |
| public boolean hasAcceptedLicenses() { |
| return !accepted.isEmpty(); |
| } |
| |
| public void read(InputStream stream) throws IOException { |
| try { |
| DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); |
| factory.setNamespaceAware(true); |
| DocumentBuilder parser = factory.newDocumentBuilder(); |
| Document doc = parser.parse(stream); |
| Node root = doc.getDocumentElement(); |
| processRoot(root, accepted); |
| } catch (ParserConfigurationException e) { |
| ProvUI.handleException(e, ProvUIMessages.ProvUILicenseManager_ParsingError, StatusManager.LOG); |
| } catch (SAXException e) { |
| ProvUI.handleException(e, ProvUIMessages.ProvUILicenseManager_ParsingError, StatusManager.LOG); |
| } |
| } |
| |
| public void write(OutputStream stream) throws IOException { |
| OutputStreamWriter osw = null; |
| PrintWriter writer = null; |
| try { |
| osw = new OutputStreamWriter(stream, "UTF8"); //$NON-NLS-1$ |
| writer = new PrintWriter(osw); |
| writer.println("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"); //$NON-NLS-1$ |
| writer.println("<licenses>"); //$NON-NLS-1$ |
| for (Iterator i = accepted.iterator(); i.hasNext();) { |
| BigInteger digest = (BigInteger) i.next(); |
| writer.print(" " + "<license digest=\"" + digest.toString(16) + "\"/>"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ |
| } |
| } finally { |
| writer.println("</licenses>"); //$NON-NLS-1$ |
| writer.flush(); |
| writer.close(); |
| if (osw != null) |
| osw.close(); |
| } |
| } |
| |
| private void processRoot(Node root, Set licenses) { |
| if (root.getNodeName().equals("licenses")) { //$NON-NLS-1$ |
| NodeList children = root.getChildNodes(); |
| processChildren(children, licenses); |
| } |
| } |
| |
| private void processChildren(NodeList children, Set licenses) { |
| for (int i = 0; i < children.getLength(); i++) { |
| Node child = children.item(i); |
| if (child.getNodeType() == Node.ELEMENT_NODE) { |
| if (child.getNodeName().equals("license")) { //$NON-NLS-1$ |
| NamedNodeMap atts = child.getAttributes(); |
| Node digestAtt = atts.getNamedItem("digest"); //$NON-NLS-1$ |
| if (digestAtt != null) { |
| BigInteger digest = new BigInteger(digestAtt.getNodeValue(), 16); |
| licenses.add(digest); |
| } |
| } |
| } |
| } |
| } |
| } |