(PowerBuilder) Compress and Decompress a String

Demonstrates how to compress and decompress a string.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

integer li_rc
integer li_Success
oleobject loo_Sb
integer i
oleobject loo_Compress
string ls_CompressedBase64
string ls_DecompressedString

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

loo_Sb = create oleobject
// Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
li_rc = loo_Sb.ConnectToNewObject("Chilkat.StringBuilder")
if li_rc < 0 then
    destroy loo_Sb
    MessageBox("Error","Connecting to COM object failed")
    return
end if

for i = 1 to 20
    loo_Sb.Append("This is the original uncompressed string.~r~n")
next

loo_Compress = create oleobject
// Use "Chilkat_9_5_0.Compression" for versions of Chilkat < 10.0.0
li_rc = loo_Compress.ConnectToNewObject("Chilkat.Compression")

loo_Compress.Algorithm = "deflate"
// Indicate that the utf-8 byte representation of the string should be compressed.
loo_Compress.Charset = "utf-8"

loo_CompressedBytes = loo_Compress.CompressString(loo_Sb.GetAsString())

// If the compressed data is desired in string format, then get the base64 representation of the bytes.
loo_Compress.EncodingMode = "base64"
ls_CompressedBase64 = loo_Compress.CompressStringENC(loo_Sb.GetAsString())
Write-Debug "Compressed Bytes as Base64: " + ls_CompressedBase64

// Now decompress...
ls_DecompressedString = loo_Compress.DecompressString(loo_CompressedBytes)
Write-Debug "The original string after decompressing from binary compressed data:"
Write-Debug ls_DecompressedString

// To decompress from Base64...
loo_Compress.EncodingMode = "base64"
ls_DecompressedString = loo_Compress.DecompressStringENC(ls_CompressedBase64)
Write-Debug "The original string after decompressing from Base64:"
Write-Debug ls_DecompressedString


destroy loo_Sb
destroy loo_Compress