Apache Ant Source Code Files are inside the Apache Ant source package file like apache-ant-1.10.10-src.zip. Unzip the source package file and go to the "src/main" sub-directory, you will see source code files.

Here is the list of Java source code files of the Apache Ant 1.10.10 in \Users\fyicenter\apache-ant-1.10.10\src\main:

⏎ org/apache/tools/ant/util/FileNameMapper.java

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You 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
 *
 *      https://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.
 *
 * <p>Used to find the name of the target file(s) corresponding to a
 * source file.</p>
 *
 * <p>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.</p>
 *
 */
public interface FileNameMapper {

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

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

    /**
     * Returns an array containing the target filename(s) for the
     * given source file.
     *
     * <p>if the given rule doesn't apply to the source file,
     * implementation must return null. SourceFileScanner will then
     * omit the source file in question.</p>
     *
     * @param sourceFileName the name of the source file relative to
     *                       some given basedirectory. Might be {@code
     *                       null} for resources that don't provide a
     *                       name.
     * @return an array of strings if the rule applies to the source file, or
     *         null if it does not.
     */
    String[] mapFileName(String sourceFileName);
}

⏎ org/apache/tools/ant/util/FileNameMapper.java

Or download all of them as a single archive file:

File name: apache-ant-1.10.10-fyi.zip
File size: 2392938 bytes
Release date: 2021-04-17
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