(Xojo Plugin) 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.

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

Dim gzip As New Chilkat.Gzip

// File-to-file GZip:
// Compress "hamlet.xml" to create "hamlet.xml.gz"
Dim success As Boolean
success = gzip.CompressFile("hamlet.xml","hamlet.xml.gz")
If (success <> True) Then
    System.DebugLog(gzip.LastErrorText)
    Return
End If

// File-to-file ungzip
// Decompress "hamlet.xml.gz" to create "hamletOut.xml"
success = gzip.UncompressFile("hamlet.xml.gz","hamletOut.xml")
If (success <> True) Then
    System.DebugLog(gzip.LastErrorText)
    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.
Dim xmlStr As String
xmlStr = gzip.UncompressFileToString("hamlet.xml.gz","utf-8")
If (success <> True) Then
    System.DebugLog(gzip.LastErrorText)
    Return
End If

System.DebugLog(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