The Zip package provides services for compressing and decompressing files. The major functionalities offered in the Zip Package are the following:

  • Compress() Compress a file or directory to a archive file.
  • Decompress() Decompress a archive file to a directory.
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    Class Attributes Index

    o ERROR
    Unknown error constant .
    o FILENOTFOUND
    File not found error constant.
    o NOTAFILE
    The input file for Decompress is not a file error constant.
    o NOWRITEPERMISSION
    The output archive file for Compress does not have write permission error constant.
    o OK
    Success return constant.

    Class Methods Index

    o Compress( String outFilename, String inFilename )
    Compress inFilename to an archive file outFilename. inFilename can be a valid file or directory
    o Decompress( String outDirname, String inFilename )
    Decompress archive file,inFilename, to directory, outDirname.

    Class Attributes

    o ERROR 
     Error ERROR

    Unknown error constant.

    o FILENOTFOUND 
     Error FILENOTFOUND

    File not found error constant.

    o NOTAFILE 
     Error NOTAFILE

    The input file for Decompress() is not a file error constant.

    o NOWRITEPERMISSION 
     Error NOWRITEPERMISSION

    The output archive file for Compress() does not have write permission error constant .

    o OK 
     Integer OK

    Success return constant.

    Class Methods

    o Compress 
     Integer Compress(
            String outFilename,
            String inFilename )

    Compress file or directory, inFilename, to an archive file, outFilename.

    Parameters:
    outFilename  -  Name of target archive file.
    inFilename  -  Name of source file or directory to be compressed.
    Returns:
    An Integer indicating the return status. Possible values are:

    OK Compression successful
    FILENOTFOUND inFilename does not exist
    NOWRITEPERMISSION outFilename does not have write permission
    ERROR any other errors
    o Decompress 
     Integer Decompress(
            String outDirname,
            String inFilename )

    Decompress an archive file, inFilename, to directory, outDirname.

    Parameters:
    outDirname  -  Name of target directory where decompression will occur. If outDirname does not exist then it will be created.
    inFilename  -  Name of source archive file to be decompressed.
    Returns:
    An Integer indicating the return status. Possible values are:

    OK Decompression was successful
    FILENOTFOUND inFilename does not exist
    ERROR any other errors