B4X

Decompress Gzip Data In-Place Using BinData

See more Gzip Examples

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.

B4X

Dim success As Boolean = 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.

Dim gzip As ChilkatGzip
gzip.Initialize("gzip")
Dim bd As ChilkatBinData
bd.Initialize

'  Load a .gz file into BinData:
success = bd.LoadFile("example.txt.gz")
If success = False Then
    Log(bd.LastErrorText)
    Return
End If


Log("Compressed size (bytes): " & bd.NumBytes)

'  Uncompress the data in-place:
success = gzip.UncompressBd(bd)
If success = False Then
    Log(gzip.LastErrorText)
    Return
End If


Log("Decompressed size (bytes): " & bd.NumBytes)

'  Save the uncompressed data to a file:
success = bd.WriteFile("example.txt")
If success = False Then
    Log(bd.LastErrorText)
    Return
End If


Log("File successfully uncompressed to example.txt")