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/*******************************************************************************
* Copyright (c) 2005, 2007 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.team.internal.ccvs.ui.operations;
import java.io.*;
import java.nio.channels.FileChannel;
import org.eclipse.core.resources.mapping.ResourceMapping;
import org.eclipse.core.runtime.*;
import org.eclipse.team.internal.ccvs.core.CVSException;
import org.eclipse.team.internal.ccvs.core.CVSStatus;
import org.eclipse.team.internal.ccvs.core.client.Command.LocalOption;
import org.eclipse.team.internal.ccvs.ui.CVSUIMessages;
import org.eclipse.team.internal.core.TeamPlugin;
import org.eclipse.ui.IWorkbenchPart;
public class FileDiffOperation extends DiffOperation {
FileOutputStream os;
PrintStream printStream;
File file;
File tempFile;
public FileDiffOperation(IWorkbenchPart part, ResourceMapping[] mappings, LocalOption[] options, File file, boolean isMultiPatch, boolean includeFullPathInformation, IPath patchRoot) {
super(part, mappings, options, isMultiPatch, includeFullPathInformation, patchRoot, file.getAbsolutePath());
IPath teamLocation= TeamPlugin.getPlugin().getStateLocation();
IPath tempFilePath = teamLocation.append(new Path(IPath.SEPARATOR + "tempDiff" + System.currentTimeMillis())); //$NON-NLS-1$
tempFile = tempFilePath.toFile();
this.file = file;
}
public void execute(IProgressMonitor monitor) throws CVSException, InterruptedException {
super.execute(monitor);
if (tempFile.length() == 0) {
tempFile.delete();
reportEmptyDiff();
return;
}
if (this.isMultiPatch &&
(!patchHasContents && !patchHasNewFiles)){
tempFile.delete();
reportEmptyDiff();
return;
}
copyFile();
}
protected void copyFile() throws CVSException {
try (FileInputStream tempFileStream = new FileInputStream(tempFile);
FileOutputStream fileStream = new FileOutputStream(file)) {
FileChannel tempFileChannel = tempFileStream.getChannel();
FileChannel fileChannel = fileStream.getChannel();
long size = tempFileChannel.size();
long bytesTransferred = fileChannel.transferFrom(tempFileChannel, 0, size);
while (bytesTransferred != size) {
// Transfer from point left off until the end of the file
bytesTransferred += fileChannel.transferFrom(tempFileChannel, bytesTransferred, size);
}
} catch (IOException e) {
throw CVSException.wrapException(e);
} finally {
if (tempFile != null)
tempFile.delete();
}
}
/* (non-Javadoc)
* @see org.eclipse.team.internal.ccvs.ui.operations.DiffOperation#openStream()
*/
protected PrintStream openStream() throws CVSException {
try {
os = new FileOutputStream(tempFile);
return new PrintStream(os);
} catch (FileNotFoundException e) {
IStatus status = new CVSStatus(IStatus.ERROR, CVSStatus.ERROR, CVSUIMessages.GenerateDiffFileOperation_0, e);
throw new CVSException(status);
}
}
}
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