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(Classic ASP) Deflate File

Demonstrates how to use the Deflate compression algorithm to compress a file. (The deflate compression algorithm is the most commonly used in the Zip archive file format.)

This code is capable of compressing any size file because the file data is compressed from input to output in a streaming mode. The output file contains only the deflated data (it is not a .zip, and there is no file structure or format).

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
set compress = Server.CreateObject("Chilkat_9_5_0.Compression")

'  Any string argument automatically begins a 30-day trial.
success = compress.UnlockComponent("30-day trial")
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( compress.LastErrorText) & "</pre>"

End If

compress.Algorithm = "deflate"

'  Deflate this XML file:
success = compress.CompressFile("hamlet.xml","hamletDeflate.dat")
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( compress.LastErrorText) & "</pre>"

End If

'  Inflate back to the original:
success = compress.DecompressFile("hamletDeflate.dat","hamletInflated.xml")
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( compress.LastErrorText) & "</pre>"

End If

Response.Write "<pre>" & Server.HTMLEncode( "Success!") & "</pre>"

%>
</body>
</html>

 

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