Copyright (c) 2006, 2017 IBM Corporation and others.
This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0
Contributors:
IBM Corporation - initial API and implementation
/*******************************************************************************
 * Copyright (c) 2006, 2017 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * 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.
/**
	 * Create a filter that does not ignore whitespace.
	 */
	public ContentComparisonDiffFilter() {
		this(false);
	}
	
Create a filter and configure how whitespace is handled.
Params:
ignoreWhitespace – whether whitespace should be ignored/**
	 * 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 select method to compare the
contents of two non-null files.
Params:
local – a local file
remote – a resource variant of the file
monitor – a progress monitor
Returns:
whether the contents of the two files are equal/**
	 * 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);
	}

	@Override
	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);
	}
}