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/*******************************************************************************
* Copyright (c) 2006, 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.team.internal.core.subscribers;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.Assert;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.team.core.diff.DiffFilter;
import org.eclipse.team.core.diff.IDiff;
import org.eclipse.team.core.history.IFileRevision;
import org.eclipse.team.core.mapping.provider.ResourceDiffTree;
import org.eclipse.team.internal.core.mapping.SyncInfoToDiffConverter;
public class ContentComparisonDiffFilter extends DiffFilter {
ContentComparator criteria = new ContentComparator(false);
/**
* Create a filter that does not ignore whitespace.
*/
public ContentComparisonDiffFilter() {
this(false);
}
/**
* Create a filter and configure how whitespace is handled.
* @param ignoreWhitespace whether whitespace should be ignored
*/
public ContentComparisonDiffFilter(boolean ignoreWhitespace) {
criteria = new ContentComparator(ignoreWhitespace);
}
/**
* Compare the contents of the local file and its variant.
* This is used by the <code>select</code> method to compare the
* contents of two non-null files.
* @param local a local file
* @param remote a resource variant of the file
* @param monitor a progress monitor
* @return whether the contents of the two files are equal
*/
public boolean compareContents(IFile local, IFileRevision remote, IProgressMonitor monitor) {
Assert.isNotNull(local);
Assert.isNotNull(remote);
return criteria.compare(local, remote, monitor);
}
public boolean select(IDiff diff, IProgressMonitor monitor) {
IFileRevision remote = SyncInfoToDiffConverter.getRemote(diff);
IResource local = ResourceDiffTree.getResourceFor(diff);
if (local == null) return true;
if (local.getType() != IResource.FILE) return false;
if (remote == null) return !local.exists();
if (!local.exists()) return false;
return compareContents((IFile)local, remote, monitor);
}
}
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