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Decompress Gzip Data In-Place Using BinData

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This example demonstrates how to use the UncompressBd method to decompress Gzip data stored in a BinData object.

The compressed .gz file is first loaded into memory. The UncompressBd method then decompresses the data in-place, meaning the original compressed bytes in the BinData object are replaced with the uncompressed data.

After decompression, the example writes the resulting data to a file. This approach is useful when working entirely in memory before saving or further processing the uncompressed data.

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Local $bSuccess = False

; This example demonstrates how to decompress Gzip data stored in a BinData object.
; The decompression is done in-place, replacing the compressed data with the original data.

$oGzip = ObjCreate("Chilkat.Gzip")
$oBd = ObjCreate("Chilkat.BinData")

; Load a .gz file into BinData:
$bSuccess = $oBd.LoadFile("example.txt.gz")
If ($bSuccess = False) Then
    ConsoleWrite($oBd.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("Compressed size (bytes): " & $oBd.NumBytes & @CRLF)

; Uncompress the data in-place:
$bSuccess = $oGzip.UncompressBd($oBd)
If ($bSuccess = False) Then
    ConsoleWrite($oGzip.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("Decompressed size (bytes): " & $oBd.NumBytes & @CRLF)

; Save the uncompressed data to a file:
$bSuccess = $oBd.WriteFile("example.txt")
If ($bSuccess = False) Then
    ConsoleWrite($oBd.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("File successfully uncompressed to example.txt" & @CRLF)