Visual Basic 6.0

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.

Visual Basic 6.0

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

Dim gzip As New ChilkatGzip

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

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

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