(Lianja) GZip Create / Extract .gz File

Demonstrates how to compress a file to create a .gz (GZip) file.

Note: The .gz file format is a compressed file format. It contains a single file. The .gz file format is not an archive format (i.e. it does not contain a collection of files/directories such as with the .zip, .rar, or .tar file formats). GZip is often combined with TAR to create a .tgz (or .tar.gz).

Note: It is possible for a .gz to contain more than one file, but this is very uncommon.

Chilkat Lianja Extension Download Chilkat Lianja Extension

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

loGzip = createobject("CkGzip")

// File-to-file GZip:
// Compress "hamlet.xml" to create "hamlet.xml.gz"
llSuccess = loGzip.CompressFile("hamlet.xml","hamlet.xml.gz")
if (llSuccess <> .T.) then
    ? loGzip.LastErrorText
    release loGzip
    return
endif

// File-to-file ungzip
// Decompress "hamlet.xml.gz" to create "hamletOut.xml"
llSuccess = loGzip.UncompressFile("hamlet.xml.gz","hamletOut.xml")
if (llSuccess <> .T.) then
    ? loGzip.LastErrorText
    release loGzip
    return
endif

// File-to-string ungzip
// Decompress the contents of a .gz directly to a string variable:
// The 2nd argument indicates the charset of the character
// data after it is decompressed.

lcXmlStr = loGzip.UncompressFileToString("hamlet.xml.gz","utf-8")
if (llSuccess <> .T.) then
    ? loGzip.LastErrorText
    release loGzip
    return
endif

? lcXmlStr

// The Chilkat GZip API provides much more flexibility than shown
// here.  See the reference documentation at 
// http://www.chilkatsoft.com/refdoc for more information


release loGzip