PowerShell

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.

PowerShell

Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$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 = New-Object Chilkat.Gzip
$bd = New-Object Chilkat.BinData

# Load a .gz file into BinData:
$success = $bd.LoadFile("example.txt.gz")
if ($success -eq $false) {
    $($bd.LastErrorText)
    exit
}

$("Compressed size (bytes): " + $bd.NumBytes)

# Uncompress the data in-place:
$success = $gzip.UncompressBd($bd)
if ($success -eq $false) {
    $($gzip.LastErrorText)
    exit
}

$("Decompressed size (bytes): " + $bd.NumBytes)

# Save the uncompressed data to a file:
$success = $bd.WriteFile("example.txt")
if ($success -eq $false) {
    $($bd.LastErrorText)
    exit
}

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