B4X

Compress Text from StringBuilder to Gzip (BinData Output)

See more Gzip Examples

This example demonstrates how to use the CompressSb method to compress text stored in a StringBuilder into Gzip format.

The text is first converted to its byte representation using the specified character set (in this case, UTF-8). These bytes are then compressed, and the resulting Gzip data is written to a BinData object in memory.

This approach is useful when working with dynamically generated text that you want to compress without first writing it to a file. The example also shows how the compressed data can optionally be saved to a .gz file.

B4X

Dim success As Boolean = False

'  This example demonstrates how to compress text contained in a StringBuilder
'  into Gzip format, storing the compressed result in a BinData object.

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

'  Add some text to the StringBuilder:
sb.Append("The quick brown fox jumps over the lazy dog.")

'  Compress the text using UTF-8 encoding:
success = gzip.CompressSb(sb, "utf-8", bd)
If success = False Then
    Log(gzip.LastErrorText)
    Return
End If


'  The BinData now contains the Gzip-compressed bytes.
Log("Compression successful.")
Log("Compressed size (bytes): " & bd.NumBytes)

'  (Optional) Save to a .gz file:
success = bd.WriteFile("text.gz")
If success = False Then
    Log(bd.LastErrorText)
    Return
End If


Log("Gzip file written to text.gz")