Classic ASP

Compress String Feed to Base64

This example receives incoming text data in chunks, compresses as a stream, and accumulates the compressed data in base64.

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Classic ASP

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

' This example assumes the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

set sbCompressedBase64 = Server.CreateObject("Chilkat.StringBuilder")

set compress = Server.CreateObject("Chilkat.Compression")
compress.Algorithm = "deflate"
compress.Charset = "utf-8"
compress.EncodingMode = "base64"

compress.FirstChunk = 1
compress.LastChunk = 0

set bdCompressed = Server.CreateObject("Chilkat.BinData")
set sbUncompressedChunk = Server.CreateObject("Chilkat.StringBuilder")

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

Response.Write "<pre>" & Server.HTMLEncode( "The base64 encoded compressed text:") & "</pre>"
Response.Write "<pre>" & Server.HTMLEncode( bdCompressed.GetEncoded("base64")) & "</pre>"

' Decompress in one call:
originalText = compress.DecompressStringENC(bdCompressed.GetEncoded("base64"))
Response.Write "<pre>" & Server.HTMLEncode( originalText) & "</pre>"

%>
</body>
</html>