PowerBuilder

GZip Create / Extract .gz File

See more Gzip Examples

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.

PowerBuilder

integer li_rc
long li_Success
oleobject loo_Gzip
string ls_XmlStr

li_Success = 0

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

loo_Gzip = create oleobject
li_rc = loo_Gzip.ConnectToNewObject("Chilkat.Gzip")
if li_rc < 0 then
    destroy loo_Gzip
    MessageBox("Error","Connecting to COM object failed")
    return
end if

//  File-to-file GZip:
//  Compress "hamlet.xml" to create "hamlet.xml.gz";
li_Success = loo_Gzip.CompressFile("hamlet.xml","hamlet.xml.gz")
if li_Success = 0 then
    Write-Debug loo_Gzip.LastErrorText
    destroy loo_Gzip
    return
end if

//  File-to-file ungzip
//  Decompress "hamlet.xml.gz" to create "hamletOut.xml";
li_Success = loo_Gzip.UncompressFile("hamlet.xml.gz","hamletOut.xml")
if li_Success = 0 then
    Write-Debug loo_Gzip.LastErrorText
    destroy loo_Gzip
    return
end if

//  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.

ls_XmlStr = loo_Gzip.UncompressFileToString("hamlet.xml.gz","utf-8")
if li_Success = 0 then
    Write-Debug loo_Gzip.LastErrorText
    destroy loo_Gzip
    return
end if

Write-Debug ls_XmlStr

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


destroy loo_Gzip