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/*******************************************************************************
* Copyright (c) 2004 - 2006 University Of British Columbia 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:
* University Of British Columbia - initial API and implementation
*******************************************************************************/
package org.eclipse.mylyn.internal.tasks.core;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Collection;
import java.util.Set;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;
import org.eclipse.mylyn.monitor.core.StatusHandler;
import org.eclipse.mylyn.tasks.core.TaskRepository;
import org.eclipse.mylyn.tasks.core.TaskRepositoryManager;
import org.xml.sax.InputSource;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.XMLReaderFactory;
/**
* Adapted from MylarContextExternalizer
*
* @author Rob Elves
*/
public class TaskRepositoriesExternalizer {
private SaxRepositoriesWriter writer = new SaxRepositoriesWriter();
public static final String ELEMENT_TASK_REPOSITORIES = "TaskRepositories";
public static final String ELEMENT_TASK_REPOSITORY = "TaskRepository";
public static final String ATTRIBUTE_VERSION = "OutputVersion";
public void writeRepositoriesToXML(Collection<TaskRepository> repositories, File file) {
ZipOutputStream outputStream = null;
try {
if (!file.exists())
file.createNewFile();
outputStream = new ZipOutputStream(new FileOutputStream(file));
ZipEntry zipEntry = new ZipEntry(TaskRepositoryManager.OLD_REPOSITORIES_FILE);
outputStream.putNextEntry(zipEntry);
outputStream.setMethod(ZipOutputStream.DEFLATED);
// OutputStream stream = new FileOutputStream(file);
writer.setOutputStream(outputStream);
writer.writeRepositoriesToStream(repositories);
outputStream.flush();
outputStream.closeEntry();
outputStream.close();
} catch (IOException e) {
StatusHandler.fail(e, "Could not write: " + file.getAbsolutePath(), true);
} finally {
if (outputStream != null) {
try {
outputStream.close();
} catch (IOException e) {
StatusHandler.fail(e, "Unable to terminate output stream to repositories file.", false);
}
}
}
}
public Set<TaskRepository> readRepositoriesFromXML(File file) {
if (!file.exists())
return null;
InputStream inputStream = null;
try {
inputStream = new ZipInputStream(new FileInputStream(file));
((ZipInputStream) inputStream).getNextEntry();
SaxRepositoriesContentHandler contentHandler = new SaxRepositoriesContentHandler();
XMLReader reader = XMLReaderFactory.createXMLReader();
reader.setContentHandler(contentHandler);
reader.parse(new InputSource(inputStream));
return contentHandler.getRepositories();
} catch (Throwable e) {
file.renameTo(new File(file.getAbsolutePath() + "-save"));
StatusHandler.log(e, "Error while reading context file");
return null;
} finally {
if (inputStream != null) {
try {
inputStream.close();
} catch (IOException e) {
StatusHandler.fail(e, "Failed to close repositories input stream.", false);
}
}
}
}
}
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