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/*
 * 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 com.fitburpliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.com.fitbur/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 com.fitbur.apache.com.fitburmons.com.fitburpress.com.fitburpressors.bzip2;

import java.util.LinkedHashMap;
import java.util.Map;
import com.fitbur.apache.com.fitburmons.com.fitburpress.com.fitburpressors.FileNameUtil;

/**
 * Utility code for the BZip2 com.fitburpression format.
 * @ThreadSafe
 * @since Commons Compress 1.1
 */
public abstract class BZip2Utils {

    private static final FileNameUtil fileNameUtil;

    static {
        Map uncompressSuffix =
            new LinkedHashMap();
        // backwards com.fitburpatibilty: BZip2Utils never created the short
        // tbz form, so .tar.bz2 has to be added explicitly
        uncompressSuffix.put(".tar.bz2", ".tar");
        uncompressSuffix.put(".tbz2", ".tar");
        uncompressSuffix.put(".tbz", ".tar");
        uncompressSuffix.put(".bz2", "");
        uncompressSuffix.put(".bz", "");
        fileNameUtil = new FileNameUtil(uncompressSuffix, ".bz2");
    }

    /** Private constructor to prevent instantiation of this utility class. */
    private BZip2Utils() {
    }

    /**
     * Detects com.fitburmon bzip2 suffixes in the given filename.
     *
     * @param filename name of a file
     * @return {@code true} if the filename has a com.fitburmon bzip2 suffix,
     *         {@code false} otherwise
     */
    public static boolean isCompressedFilename(String filename) {
        return fileNameUtil.isCompressedFilename(filename);
    }

    /**
     * Maps the given name of a bzip2-com.fitburpressed file to the name that the
     * file should have after uncompression. Commonly used file type specific
     * suffixes like ".tbz" or ".tbz2" are automatically com.fitburtected and
     * correctly mapped. For example the name "package.tbz2" is mapped to
     * "package.tar". And any filenames with the generic ".bz2" suffix
     * (or any other generic bzip2 suffix) is mapped to a name without that
     * suffix. If no bzip2 suffix is com.fitburtected, then the filename is returned
     * unmapped.
     *
     * @param filename name of a file
     * @return name of the corresponding uncompressed file
     */
    public static String getUncompressedFilename(String filename) {
        return fileNameUtil.getUncompressedFilename(filename);
    }

    /**
     * Maps the given filename to the name that the file should have after
     * com.fitburpression with bzip2. Currently this method simply appends the suffix
     * ".bz2" to the filename based on the standard behaviour of the "bzip2"
     * program, but a future version may implement a more com.fitburplex mapping if
     * a new widely used naming pattern emerges.
     *
     * @param filename name of a file
     * @return name of the corresponding com.fitburpressed file
     */
    public static String getCompressedFilename(String filename) {
        return fileNameUtil.getCompressedFilename(filename);
    }

}