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Added codec: rick
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‎README.md‎

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- [X] `klopf`: aka Klopf code ; Polybius square with trivial alphabetical distribution
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- [X] `resistor`: aka resistor color codes
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- [X] `rick`: aka Rick cipher (in reference to Rick Astley's song "*Never gonna give you up*")
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- [X] `sms`: also called _T9 code_ ; uses "`-`" as a separator for encoding, "`-`" or "`_`" or whitespace for decoding
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- [X] `whitespace`: replaces bits with whitespaces and tabs
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- [X] `whitespace_after_before`: variant of `whitespace` ; encodes characters as new characters with whitespaces before and after according to an equation described in the codec name (e.g. "`whitespace+2*after-3*before`")

‎codext/stegano/__init__.py‎

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# -*- coding: UTF-8 -*-
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from .klopf import *
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from .resistor import *
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from .rick import *
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from .sms import *
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from .whitespace import *
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‎codext/stegano/rick.py‎

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# -*- coding: UTF-8 -*-
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"""Rick Astley Codec - Rick Astley's song content encoding.
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This codec:
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- en/decodes strings from str to str
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- en/decodes strings from bytes to bytes
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- decodes file content to str (read)
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- encodes file content from str to bytes (write)
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"""
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from ..__common__ import *
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__examples__ = {
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'enc(rick|rick-astley)': {'this is a test': "TELL LET You gonna + You gonna + NEVER + TELL UP gonna TELL"},
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}
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# inspired from: https://github.com/moongazer07/rick-cipher
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ENCMAP = {
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'A': "NEVER", 'B': "GONNA", 'C': "GIVE", 'D': "YOU", 'E': "UP", 'F': "Never", 'G': "Gonna", 'H': "LET", 'I': "You",
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'J': "DOWN", 'K': "NEver", 'L': "GOnna", 'M': "TURN", 'N': "AROUND", 'O': "AND", 'P': ["DESERT", "DESSERT"],
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'Q': "YOu", 'R': "NEVer", 'S': "gonna", 'T': "TELL", 'U': "A", 'V': "LIE", 'W': "and", 'X': "HURT", 'Y': "you",
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'Z': "rick astley", ' ': "+", '.': ".", '\n': "\n",
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'0': "0", '1': "1", '2': "2", '3': "3", '4': "4", '5': "5", '6': "6", '7': "7", '8': "8", '9': "9",
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}
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add_map("rick", ENCMAP, "?", " ", ignore_case="encode", pattern=r"^rick(?:[-_]astley)?(?:[-_]cipher)?$",
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printables_rate=1.)
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‎docs/enc/stegano.md‎

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-----
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### Rick Cipher
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This converts letters to words from Rick Astley's famous song "*Never gonna give you up*".
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**Codec** | **Conversions** | **Aliases** | **Comment**
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:---: | :---: | --- | ---
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`rick` | text <-> words from Risk's song | `rick-astley`, `rick_cipher`, `rick-astley-cipher` | case-insensitive while encoding
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```python
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>>> codext.encode("Test String", "rick")
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'TELL UP gonna TELL + gonna TELL NEVer You AROUND Gonna'
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>>> codext.decode("TELL UP gonna TELL + gonna TELL NEVer You AROUND Gonna", "rick")
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'TEST STRING'
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```
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-----
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### SMS (T9)
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This codec implements the SMS encoding, also caled T9, that is the conversion from characters to their corresponding phone keystrokes.

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