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(Visual Basic 6.0) Compress Text Feed to BinaryThis example receives incoming text data in chunks, compresses as a stream, and accumulates the compressed binary data. Note: This example requires Chilkat v11.0.0 or greater.
Dim success As Long success = 0 ' This example assumes the Chilkat API to have been previously unlocked. ' See Global Unlock Sample for sample code. Dim bdCompressed As New ChilkatBinData Dim compress As New ChilkatCompression compress.Algorithm = "deflate" compress.Charset = "utf-8" Dim sbUncompressedChunk As New ChilkatStringBuilder compress.FirstChunk = 1 compress.LastChunk = 0 Dim i As Long For i = 0 To 24 If (i = 24) Then compress.LastChunk = 1 End If sbUncompressedChunk.Clear success = sbUncompressedChunk.AppendInt(i) success = sbUncompressedChunk.Append(": This is a line of data to be compressed..." & vbCrLf) success = compress.CompressSb(sbUncompressedChunk,bdCompressed) compress.FirstChunk = 0 Next ' Show the compressed data in hex format: Debug.Print "The hex encoded compressed text:" Debug.Print bdCompressed.GetEncoded("hex") ' Now decompress in one call. It is important to set both FirstChunk and LastChunk = 1 Dim bdDecompressed As New ChilkatBinData compress.FirstChunk = 1 compress.LastChunk = 1 success = compress.DecompressBd2(bdCompressed,bdDecompressed) If (success = 0) Then Debug.Print compress.LastErrorText Exit Sub End If Dim originalText As String originalText = bdDecompressed.GetString("utf-8") Debug.Print originalText |
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