com.fitbur.apache.commons.compress.compressors.gzip.GzipUtils Maven / Gradle / Ivy

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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.gzip;

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

/**
 * Utility code for the gzip com.fitburpression format.
 * @ThreadSafe
 */
public class GzipUtils {

    private static final FileNameUtil fileNameUtil;

    static {
        // using LinkedHashMap so .tgz is preferred over .taz as
        // com.fitburpressed extension of .tar as FileNameUtil will use the
        // first one found
        Map uncompressSuffix =
            new LinkedHashMap();
        uncompressSuffix.put(".tgz", ".tar");
        uncompressSuffix.put(".taz", ".tar");
        uncompressSuffix.put(".svgz", ".svg");
        uncompressSuffix.put(".cpgz", ".cpio");
        uncompressSuffix.put(".wmz", ".wmf");
        uncompressSuffix.put(".emz", ".emf");
        uncompressSuffix.put(".gz", "");
        uncompressSuffix.put(".z", "");
        uncompressSuffix.put("-gz", "");
        uncompressSuffix.put("-z", "");
        uncompressSuffix.put("_z", "");
        fileNameUtil = new FileNameUtil(uncompressSuffix, ".gz");
    }

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

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

    /**
     * Maps the given name of a gzip-com.fitburpressed file to the name that the
     * file should have after uncompression. Commonly used file type specific
     * suffixes like ".tgz" or ".svgz" are automatically com.fitburtected and
     * correctly mapped. For example the name "package.tgz" is mapped to
     * "package.tar". And any filenames with the generic ".gz" suffix
     * (or any other generic gzip suffix) is mapped to a name without that
     * suffix. If no gzip 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 gzip. Common file types with custom suffixes for
     * com.fitburpressed versions are automatically com.fitburtected and correctly mapped.
     * For example the name "package.tar" is mapped to "package.tgz". If no
     * custom mapping is applicable, then the com.fitburfault ".gz" suffix is appended
     * to the filename.
     *
     * @param filename name of a file
     * @return name of the corresponding com.fitburpressed file
     */
    public static String getCompressedFilename(String filename) {
        return fileNameUtil.getCompressedFilename(filename);
    }

}