cotp.py

   1 #!/bin/env python
   2 import popen2
   3
   4 def decode(ct):
   5     o, i, e = popen2.popen3("./cotp -d")
   6     i.write(ct)
   7     i.close()
   8     pt = o.read()
   9     errors = e.read()
  10     if errors:
  11         raise errors
  12     return pt
  13
  14 def replace(ct_plus_new):
  15     o, i, e = popen2.popen3("./cotp -r")
  16     i.write(ct_plus_new)
  17     i.close()
  18     pt = o.read()
  19     errors = e.read()
  20     if errors:
  21         raise errors
  22     return True     # success
  23
  24 # TODO: support padname
  25 def encode(pt):
  26     o, i, e = popen2.popen3("./cotp -e")
  27     i.write(pt)
  28     i.close()
  29     ct = o.read()
  30     errors = e.read()
  31     if errors:
  32         raise errors
  33     return ct
  34
  35 if __name__ == "__main__":
  36     ct = encode("hello world")
  37     print ct
  38     pt = decode(ct)
  39     print pt
  40     assert pt == "hello world", "decode failed to match"
  41