From: Robert Lehman <grieve@...>
Date: 2009-03-18T01:02:31+09:00
Subject: Unicode Character 'SUBSTITUTE' (U+001A) troubles...

I'm implementing a version of the "Mini-AES" (http://findarticles.com/
p/articles/mi_qa3926/is_200210/ai_n9129484) in Ruby and have all of
the bit shifts and stuff working..

The problem I'm having is with the file input.  When ever the input
file has the character U+001A (http://www.fileformat.info/info/unicode/
char/001a/index.htm), it stops reading in the line (and thus doesn't
complete the whole cipher text).

Basically, here is the code that I'm using to read the input:
fin = File.open(ARGV[0], 'r')
plainText = ""
while (line = fin.gets)
  plainText += line
end
fin.close

Here is a sample line of cipher text:
týH†a¤j{ÀìyMšyMÇÜ«àÃSÙ¿àé4þF&käj{Àì

if I read this line in, it would only read "týH†a¤j{ÀìyMšyM" and skip
the rest.