(VBScript) Check if a File is in Gzip Format

See more Gzip Examples

This example demonstrates how to use the ExamineFile method to determine whether a file is in Gzip format.

The method inspects the contents of the specified file and returns true if the file is recognized as a valid Gzip file, or false if it is not. This is useful for validating input files before attempting to decompress them.

If the method fails (for example, if the file does not exist or cannot be accessed), the CHECK_SUCCESS macro reports the error.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
'Create a Unicode (utf-16) output text file.
Set outFile = fso.CreateTextFile("output.txt", True, True)

' This example demonstrates how to determine if a file is in Gzip format.

set gzip = CreateObject("Chilkat.Gzip")

' The file to examine:
filePath = "test.gz"

' Check if the file is a valid Gzip file:
isGzip = gzip.ExamineFile(filePath)

If (isGzip = 1) Then
    outFile.WriteLine("The file is a valid Gzip file.")
Else
    outFile.WriteLine("The file isnot a Gzip file.")
End If


outFile.Close