| /******************************************************************************* |
| * Copyright (c) 2008, 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.equinox.internal.p2.persistence; |
| |
| import java.io.*; |
| import java.net.URL; |
| import org.eclipse.core.runtime.*; |
| import org.eclipse.equinox.internal.p2.core.Activator; |
| import org.eclipse.equinox.internal.p2.core.helpers.LogHelper; |
| import org.eclipse.equinox.p2.core.ProvisionException; |
| import org.eclipse.osgi.util.NLS; |
| |
| /** |
| * This class reads and writes repository metadata (e.g. table of contents files) |
| * for composite artifact and metadata repositories. |
| * <p> |
| * Note: This class is not used for reading or writing the actual composite repositories. |
| */ |
| public class CompositeRepositoryIO { |
| |
| /** |
| * Writes the given repository to the stream. |
| * This method performs buffering, and closes the stream when finished. |
| */ |
| public void write(CompositeRepositoryState repository, OutputStream output, String type) { |
| OutputStream bufferedOutput = null; |
| try { |
| try { |
| bufferedOutput = new BufferedOutputStream(output); |
| CompositeWriter repositoryWriter = new CompositeWriter(bufferedOutput, type); |
| repositoryWriter.write(repository); |
| } finally { |
| if (bufferedOutput != null) { |
| bufferedOutput.close(); |
| } |
| } |
| } catch (IOException ioe) { |
| // TODO shouldn't this throw a core exception? |
| ioe.printStackTrace(); |
| } |
| } |
| |
| /** |
| * Reads the composite repository from the given stream, |
| * and returns the contained array of abstract composite repositories. |
| * |
| * This method performs buffering, and closes the stream when finished. |
| */ |
| public CompositeRepositoryState read(URL location, InputStream input, String type, IProgressMonitor monitor) throws ProvisionException { |
| BufferedInputStream bufferedInput = null; |
| try { |
| try { |
| bufferedInput = new BufferedInputStream(input); |
| CompositeParser repositoryParser = new CompositeParser(Activator.getContext(), Activator.ID, type); |
| repositoryParser.setErrorContext(location.toExternalForm()); |
| repositoryParser.parse(input); |
| IStatus result = repositoryParser.getStatus(); |
| switch (result.getSeverity()) { |
| case IStatus.CANCEL : |
| throw new OperationCanceledException(); |
| case IStatus.ERROR : |
| throw new ProvisionException(result); |
| case IStatus.WARNING : |
| case IStatus.INFO : |
| LogHelper.log(result); |
| } |
| CompositeRepositoryState repositoryState = repositoryParser.getRepositoryState(); |
| if (repositoryState == null) |
| throw new ProvisionException(new Status(IStatus.ERROR, Activator.ID, ProvisionException.REPOSITORY_FAILED_READ, Messages.io_parseError, null)); |
| return repositoryState; |
| } finally { |
| if (bufferedInput != null) |
| bufferedInput.close(); |
| } |
| } catch (IOException ioe) { |
| String msg = NLS.bind(Messages.io_failedRead, location); |
| throw new ProvisionException(new Status(IStatus.ERROR, Activator.ID, ProvisionException.REPOSITORY_FAILED_READ, msg, ioe)); |
| } |
| } |
| } |