X-Git-Url: https://git.njae.me.uk/?a=blobdiff_plain;f=cadenus.py;fp=cadenus.py;h=0000000000000000000000000000000000000000;hb=311b300d197536622980f7a837294d8245e326b4;hp=0d3b4156e53d86739cb2648c38834880cab2fb96;hpb=d7224fba67d9f99c01bd78ef669c96189686e4c2;p=cipher-tools.git

diff --git a/cadenus.py b/cadenus.py
deleted file mode 100644
index 0d3b415..0000000
--- a/cadenus.py
+++ /dev/null
@@ -1,95 +0,0 @@
-from utilities import *
-from language_models import *
-from itertools import chain
-
-from logger import logger
-
-def make_cadenus_keycolumn(doubled_letters = 'vw', start='a', reverse=False):
-    """Makes the key column for a Cadenus cipher (the column down between the
-        rows of letters)
-
-    >>> make_cadenus_keycolumn()['a']
-    0
-    >>> make_cadenus_keycolumn()['b']
-    1
-    >>> make_cadenus_keycolumn()['c']
-    2
-    >>> make_cadenus_keycolumn()['v']
-    21
-    >>> make_cadenus_keycolumn()['w']
-    21
-    >>> make_cadenus_keycolumn()['z']
-    24
-    >>> make_cadenus_keycolumn(doubled_letters='ij', start='b', reverse=True)['a']
-    1
-    >>> make_cadenus_keycolumn(doubled_letters='ij', start='b', reverse=True)['b']
-    0
-    >>> make_cadenus_keycolumn(doubled_letters='ij', start='b', reverse=True)['c']
-    24
-    >>> make_cadenus_keycolumn(doubled_letters='ij', start='b', reverse=True)['i']
-    18
-    >>> make_cadenus_keycolumn(doubled_letters='ij', start='b', reverse=True)['j']
-    18
-    >>> make_cadenus_keycolumn(doubled_letters='ij', start='b', reverse=True)['v']
-    6
-    >>> make_cadenus_keycolumn(doubled_letters='ij', start='b', reverse=True)['z']
-    2
-    """
-    index_to_remove = string.ascii_lowercase.find(doubled_letters[0])
-    short_alphabet = string.ascii_lowercase[:index_to_remove] + string.ascii_lowercase[index_to_remove+1:]
-    if reverse:
-        short_alphabet = cat(reversed(short_alphabet))
-    start_pos = short_alphabet.find(start)
-    rotated_alphabet = short_alphabet[start_pos:] + short_alphabet[:start_pos]
-    keycolumn = {l: i for i, l in enumerate(rotated_alphabet)}
-    keycolumn[doubled_letters[0]] = keycolumn[doubled_letters[1]]
-    return keycolumn
-
-def cadenus_encipher(message, keyword, keycolumn, fillvalue='a'):
-    """Encipher with the Cadenus cipher
-
-    >>> cadenus_encipher(sanitise('Whoever has made a voyage up the Hudson ' \
-                                  'must remember the Kaatskill mountains. ' \
-                                  'They are a dismembered branch of the great'), \
-                'wink', \
-                make_cadenus_keycolumn(doubled_letters='vw', start='a', reverse=True))
-    'antodeleeeuhrsidrbhmhdrrhnimefmthgeaetakseomehetyaasuvoyegrastmmuuaeenabbtpchehtarorikswosmvaleatned'
-    >>> cadenus_encipher(sanitise('a severe limitation on the usefulness of ' \
-                                  'the cadenus is that every message must be ' \
-                                  'a multiple of twenty-five letters long'), \
-                'easy', \
-                make_cadenus_keycolumn(doubled_letters='vw', start='a', reverse=True))
-    'systretomtattlusoatleeesfiyheasdfnmschbhneuvsnpmtofarenuseieeieltarlmentieetogevesitfaisltngeeuvowul'
-    """
-    rows = chunks(message, len(message) // 25, fillvalue=fillvalue)
-    columns = zip(*rows)
-    rotated_columns = [col[start:] + col[:start] for start, col in zip([keycolumn[l] for l in keyword], columns)]    
-    rotated_rows = zip(*rotated_columns)
-    transpositions = transpositions_of(keyword)
-    transposed = [transpose(r, transpositions) for r in rotated_rows]
-    return cat(chain(*transposed))
-
-def cadenus_decipher(message, keyword, keycolumn, fillvalue='a'):
-    """
-    >>> cadenus_decipher('antodeleeeuhrsidrbhmhdrrhnimefmthgeaetakseomehetyaa' \
-                         'suvoyegrastmmuuaeenabbtpchehtarorikswosmvaleatned', \
-                 'wink', \
-                 make_cadenus_keycolumn(reverse=True))
-    'whoeverhasmadeavoyageupthehudsonmustrememberthekaatskillmountainstheyareadismemberedbranchofthegreat'
-    >>> cadenus_decipher('systretomtattlusoatleeesfiyheasdfnmschbhneuvsnpmtof' \
-                        'arenuseieeieltarlmentieetogevesitfaisltngeeuvowul', \
-                 'easy', \
-                 make_cadenus_keycolumn(reverse=True))
-    'aseverelimitationontheusefulnessofthecadenusisthateverymessagemustbeamultipleoftwentyfiveletterslong'
-    """
-    rows = chunks(message, len(message) // 25, fillvalue=fillvalue)
-    transpositions = transpositions_of(keyword)
-    untransposed_rows = [untranspose(r, transpositions) for r in rows]
-    columns = zip(*untransposed_rows)
-    rotated_columns = [col[-start:] + col[:-start] for start, col in zip([keycolumn[l] for l in keyword], columns)]    
-    rotated_rows = zip(*rotated_columns)
-    # return rotated_columns
-    return cat(chain(*rotated_rows))
-
-if __name__ == "__main__":
-    import doctest
\ No newline at end of file