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/*
 * Copyright  2003-2004 The Apache Software Foundation
 *
 *  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.
 *
 */
package org.apache.tools.ant.util;

import java.io.File;

/**
 * Maps dotted package name matches to a directory name.
 * This is the inverse of the package mapper.
 * This is useful for matching XML formatter results against their JUnit test
 * cases.
 *  * <mapper classname="org.apache.tools.ant.util.UnPackageNameMapper"
 *         from="${test.data.dir}/TEST-*Test.xml" to="*Test.java">
 * 
 *
 *
 */
public class UnPackageNameMapper extends GlobPatternMapper {
    /**
     *  Returns the part of the given string that matches the * in the
     *  "from" pattern replacing dots with file separators
     *
     *@param  name  Source filename
     *@return       Replaced variable part
     */
    protected String extractVariablePart(String name) {
        String var = name.substring(prefixLength,
                name.length() - postfixLength);
        return var.replace('.', File.separatorChar);
    }
}