Ruby

Ascii85 Encoding and Decoding

See more Encryption Examples

Demonstrates ascii85 encoding and decoding.

Note: Requires Chilkat v9.5.0.79 or greater.

Ruby

require 'chilkat'

success = false

# First demonstrate encoding strings to ascii85 and back.
sb = Chilkat::CkStringBuilder.new()

success = 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.")

encodedAscii85 = sb.getEncoded("ascii85","utf-8")
print encodedAscii85 + "\n";

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

# Decode back to the original:
sb.Clear()
sb.Append(encodedAscii85)
success = sb.Decode("ascii85","utf-8")
print "Original:" + "\n";
print sb.getAsString() + "\n";

# ---- Now encode binary data to ascii85 ----
bd = Chilkat::CkBinData.new()
success = bd.LoadFile("qa_data/jpg/starfish20.jpg")
encodedAscii85 = bd.getEncoded("ascii85")
print encodedAscii85 + "\n";

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

# Decode...
bd.Clear()
bd.AppendEncoded(encodedAscii85,"ascii85")
success = bd.WriteFile("qa_output/starfish20.jpg")