/*******************************************************************************
* Copyright (c) 2000, 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.core.internal.resources;
import java.io.DataInputStream;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;
import org.eclipse.core.internal.utils.Messages;
import org.eclipse.core.resources.IResourceStatus;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.QualifiedName;
import org.eclipse.osgi.util.NLS;
/**
* This class is used to read sync info from disk. Subclasses implement version specific reading
* code.
*/
public class SyncInfoReader {
protected Workspace workspace;
protected Synchronizer synchronizer;
public SyncInfoReader(Workspace workspace, Synchronizer synchronizer) {
super();
this.workspace= workspace;
this.synchronizer= synchronizer;
}
/**
* Returns the appropriate reader for the given version.
*/
protected SyncInfoReader getReader(int formatVersion) throws IOException {
switch (formatVersion) {
case 2:
return new SyncInfoReader_2(workspace, synchronizer);
case 3:
return new SyncInfoReader_3(workspace, synchronizer);
default:
throw new IOException(NLS.bind(Messages.resources_format, new Integer(formatVersion)));
}
}
public void readPartners(DataInputStream input) throws CoreException {
try {
int size= input.readInt();
Set registry= new HashSet(size);
for (int i= 0; i < size; i++) {
String qualifier= input.readUTF();
String local= input.readUTF();
registry.add(new QualifiedName(qualifier, local));
}
synchronizer.setRegistry(registry);
} catch (IOException e) {
String message= NLS.bind(Messages.resources_readSync, e);
throw new ResourceException(new ResourceStatus(IResourceStatus.INTERNAL_ERROR, message));
}
}
public void readSyncInfo(DataInputStream input) throws IOException, CoreException {
// dispatch to the appropriate reader depending
// on the version of the file
int formatVersion= readVersionNumber(input);
SyncInfoReader reader= getReader(formatVersion);
reader.readSyncInfo(input);
}
protected static int readVersionNumber(DataInputStream input) throws IOException {
return input.readInt();
}
}