GlobMatcher.java

/****************************************************************************
 * Copyright 2008-2011 ThoughtWorks, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Initial Contributors:
 *   Håkan Råberg
 *   Manish Chakravarty
 *   Pavan K S
 ***************************************************************************/
package com.thoughtworks.krypton.driver.web.selenium.stringmatch;

import java.util.regex.Pattern;

public class GlobMatcher implements StringMatcher {
	private static final String GLOB_PREFIX = "glob:";

	public boolean canMatch(String pattern) {
		return pattern != null;
	}

	public boolean matches(String pattern, String value) {
		return createPattern(pattern).matcher(value).find();
	}

	public boolean matchesExactly(String pattern, String value) {
		return createPattern(pattern).matcher(value).matches();
	}

	private Pattern createPattern(String pattern) {
		if (pattern.startsWith(GLOB_PREFIX)) {
			pattern = pattern.substring(GLOB_PREFIX.length());
		}
		pattern = pattern.replace(".", "\\.").replace("*", ".*").replace("?", ".?");
		return Pattern.compile(pattern, Pattern.DOTALL);
	}
}