PowerBuilder

Ascii85 Encoding and Decoding

See more Encryption Examples

Demonstrates ascii85 encoding and decoding.

Note: Requires Chilkat v9.5.0.79 or greater.

PowerBuilder

integer li_rc
integer li_Success
oleobject loo_Sb
string ls_EncodedAscii85
oleobject loo_Bd

li_Success = 0

// First demonstrate encoding strings to ascii85 and back.
loo_Sb = create oleobject
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

li_Success = loo_Sb.Append("Man is distinguished, not only by his reason, but by this singular passion from other animals, which is a lust of the mind, that by a perseverance of delight in the continued and indefatigable generation of knowledge, exceeds the short vehemence of any carnal pleasure.")

ls_EncodedAscii85 = loo_Sb.GetEncoded("ascii85","utf-8")
Write-Debug ls_EncodedAscii85

// Result is: 9jqo^BlbD-BleB1DJ+*+F(f,q/0JhKF<GL>Cj@.4 ... DII?(E,9)oF*2M7/c

// Decode back to the original:
loo_Sb.Clear()
loo_Sb.Append(ls_EncodedAscii85)
li_Success = loo_Sb.Decode("ascii85","utf-8")
Write-Debug "Original:"
Write-Debug loo_Sb.GetAsString()

// ---- Now encode binary data to ascii85 ----
loo_Bd = create oleobject
li_rc = loo_Bd.ConnectToNewObject("Chilkat.BinData")

li_Success = loo_Bd.LoadFile("qa_data/jpg/starfish20.jpg")
ls_EncodedAscii85 = loo_Bd.GetEncoded("ascii85")
Write-Debug ls_EncodedAscii85

// Result is:  s4IA0!"_al8O`[\!<E0k!([(is8E!F7VQ[M+Eqj?FED)3+C]U=6"Fn ...

// Decode...
loo_Bd.Clear()
loo_Bd.AppendEncoded(ls_EncodedAscii85,"ascii85")
li_Success = loo_Bd.WriteFile("qa_output/starfish20.jpg")


destroy loo_Sb
destroy loo_Bd