CkPython

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.

CkPython

import sys
import chilkat

success = 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.

gzip = chilkat.CkGzip()
bd = chilkat.CkBinData()

# Load a .gz file into BinData:
success = bd.LoadFile("example.txt.gz")
if (success == False):
    print(bd.lastErrorText())
    sys.exit()

print("Compressed size (bytes): " + str(bd.get_NumBytes()))

# Uncompress the data in-place:
success = gzip.UncompressBd(bd)
if (success == False):
    print(gzip.lastErrorText())
    sys.exit()

print("Decompressed size (bytes): " + str(bd.get_NumBytes()))

# Save the uncompressed data to a file:
success = bd.WriteFile("example.txt")
if (success == False):
    print(bd.lastErrorText())
    sys.exit()

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