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/*
 * Copyright  2000,2004 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;

/**
 * Interface to be used by SourceFileScanner.
 *
 * Used to find the name of the target file(s) corresponding to a
 * source file.
 *
 * The rule by which the file names are transformed is specified
 * via the setFrom and setTo methods. The exact meaning of these is
 * implementation dependent.
 *
 */
public interface FileNameMapper {

    /**
     * Sets the from part of the transformation rule.
     */
    void setFrom(String from);

    /**
     * Sets the to part of the transformation rule.
     */
    void setTo(String to);

    /**
     * Returns an array containing the target filename(s) for the
     * given source file.
     *
     * if the given rule doesn't apply to the source file,
     * implementation must return null. SourceFileScanner will then
     * omit the source file in question.
     *
     * @param sourceFileName the name of the source file relative to
     *                       some given basedirectory.
     */
    String[] mapFileName(String sourceFileName);
}