Copyright (c) 2008, 2014 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:
    Serge Beauchamp (Freescale Semiconductor) - initial API and implementation
    IBM Corporation - ongoing development
/*******************************************************************************
 * Copyright (c) 2008, 2014 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:
 *     Serge Beauchamp (Freescale Semiconductor) - initial API and implementation
 *     IBM Corporation - ongoing development
 *******************************************************************************/
package org.eclipse.core.internal.resources;

import java.util.regex.*;
import org.eclipse.core.filesystem.IFileInfo;
import org.eclipse.core.resources.*;
import org.eclipse.core.resources.filtermatchers.AbstractFileInfoMatcher;
import org.eclipse.core.runtime.*;

A Filter provider for Java Regular expression supported by
java.util.regex.Pattern.
/**
 * A Filter provider for Java Regular expression supported by
 * java.util.regex.Pattern.
 */
public class RegexFileInfoMatcher extends AbstractFileInfoMatcher {

	Pattern pattern = null;

	public RegexFileInfoMatcher() {
		// nothing to do
	}

	@Override
	public boolean matches(IContainer parent, IFileInfo fileInfo) {
		if (pattern != null) {
			Matcher m = pattern.matcher(fileInfo.getName());
			return m.matches();
		}
		return false;
	}

	@Override
	public void initialize(IProject project, Object arguments) throws CoreException {
		if (arguments != null) {
			try {
				pattern = Pattern.compile((String) arguments);
			} catch (PatternSyntaxException e) {
				throw new CoreException(new Status(IStatus.ERROR, ResourcesPlugin.PI_RESOURCES, Platform.PLUGIN_ERROR, e.getMessage(), e));
			}
		}
	}
}