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## org.apache.commons.compress.compressors.gzip
Class GzipUtils

    java.lang.Object
      org.apache.commons.compress.compressors.gzip.GzipUtils

    public class GzipUtils

extends Object

Utility code for the gzip compression format.

This class is thread-safe

Method Summary
`static String` | `getCompressedFilename(String filename)` Maps the given filename to the name that the file should have after compression with gzip.
`static String` | `getUncompressedFilename(String filename)` Maps the given name of a gzip-compressed file to the name that the file should have after uncompression.
`static boolean` | `isCompressedFilename(String filename)` Detects common gzip suffixes in the given filename.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Method Detail

### isCompressedFilename

    public static boolean isCompressedFilename(String filename)

  Detects common gzip suffixes in the given filename.

  Parameters:
    `filename` - name of a file
  Returns:
    `true` if the filename has a common gzip suffix, `false` otherwise

### getUncompressedFilename

    public static String getUncompressedFilename(String filename)

  Maps the given name of a gzip-compressed file to the name that the file should have after uncompression. Commonly used file type specific suffixes like ".tgz" or ".svgz" are automatically detected 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 detected, then the filename is returned unmapped.

  Parameters:
    `filename` - name of a file
  Returns:
    name of the corresponding uncompressed file

### getCompressedFilename

    public static String getCompressedFilename(String filename)

  Maps the given filename to the name that the file should have after compression with gzip. Common file types with custom suffixes for compressed versions are automatically detected and correctly mapped. For example the name "package.tar" is mapped to "package.tgz". If no custom mapping is applicable, then the default ".gz" suffix is appended to the filename.

  Parameters:
    `filename` - name of a file
  Returns:
    name of the corresponding compressed file

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Copyright © 2011 The Apache Software Foundation. All Rights Reserved.