mirror of
https://github.com/veekun/pokedex.git
synced 2024-07-03 02:55:49 +00:00
4e51867e95
Changed lookup()'s return value to be a list of named tuples so the caller can know which language each result is in.
135 lines
5.3 KiB
Python
135 lines
5.3 KiB
Python
# encoding: utf8
|
||
"""Provides `romanize()` for romanizing simple Japanese text."""
|
||
|
||
_roomaji_kana = {
|
||
u'ア': 'a', u'イ': 'i', u'ウ': 'u', u'エ': 'e', u'オ': 'o',
|
||
u'カ': 'ka', u'キ': 'ki', u'ク': 'ku', u'ケ': 'ke', u'コ': 'ko',
|
||
u'サ': 'sa', u'シ': 'shi', u'ス': 'su', u'セ': 'se', u'ソ': 'so',
|
||
u'タ': 'ta', u'チ': 'chi', u'ツ': 'tsu', u'テ': 'te', u'ト': 'to',
|
||
u'ナ': 'na', u'ニ': 'ni', u'ヌ': 'nu', u'ネ': 'ne', u'ノ': 'no',
|
||
u'ハ': 'ha', u'ヒ': 'hi', u'フ': 'fu', u'ヘ': 'he', u'ホ': 'ho',
|
||
u'マ': 'ma', u'ミ': 'mi', u'ム': 'mu', u'メ': 'me', u'モ': 'mo',
|
||
u'ヤ': 'ya', u'ユ': 'yu', u'ヨ': 'yo',
|
||
u'ラ': 'ra', u'リ': 'ri', u'ル': 'ru', u'レ': 're', u'ロ': 'ro',
|
||
u'ワ': 'wa', u'ヰ': 'wi', u'ヱ': 'we', u'ヲ': 'wo',
|
||
u'ン': 'n',
|
||
u'ガ': 'ga', u'ギ': 'gi', u'グ': 'gu', u'ゲ': 'ge', u'ゴ': 'go',
|
||
u'ザ': 'za', u'ジ': 'ji', u'ズ': 'zu', u'ゼ': 'ze', u'ゾ': 'zo',
|
||
u'ダ': 'da', u'ヂ': 'ji', u'ヅ': 'dzu', u'デ': 'de', u'ド': 'do',
|
||
u'バ': 'ba', u'ビ': 'bi', u'ブ': 'bu', u'ベ': 'be', u'ボ': 'bo',
|
||
u'パ': 'pa', u'ピ': 'pi', u'プ': 'pu', u'ペ': 'pe', u'ポ': 'po',
|
||
}
|
||
|
||
_roomaji_youon = {
|
||
u'ャ': 'ya', u'ュ': 'yu', u'ョ': 'yo',
|
||
u'ゃ': 'ya', u'ゅ': 'yu', u'ょ': 'yo',
|
||
}
|
||
|
||
# XXX If romanize() ever handles hiragana, it will need to make sure that the
|
||
# preceding character was a katakana
|
||
# This does not include every small kana combination, but should include every
|
||
# one used in a Pokémon name. An exhaustive list would be.. very long
|
||
_roomaji_small_kana = {
|
||
u'ァ': 'a', u'ィ': 'i', u'ゥ': 'u', u'ェ': 'e', u'ォ': 'o',
|
||
}
|
||
_roomaji_small_kana_combos = {
|
||
u'チェ': 'che',
|
||
u'シェ': 'she',
|
||
u'テァ': 'tha', u'ティ': 'ti', u'テゥ': 'thu', u'テェ': 'tye', u'テォ': 'tho',
|
||
u'デァ': 'dha', u'ディ': 'di', u'デゥ': 'dhu', u'デェ': 'dye', u'デォ': 'dho',
|
||
u'ファ': 'fa', u'フィ': 'fi', u'ホゥ': 'hu', u'フェ': 'fe', u'フォ': 'fo',
|
||
}
|
||
|
||
def romanize(string):
|
||
"""Converts a string of kana to roomaji."""
|
||
|
||
vowels = ['a', 'e', 'i', 'o', 'u', 'y']
|
||
|
||
characters = []
|
||
last_kana = None # Used for ー; っ or ッ; ん or ン
|
||
last_char = None # Used for small kana combos
|
||
for char in string:
|
||
# Full-width Latin
|
||
if ord(char) >= 0xff11 and ord(char) <= 0xff5e:
|
||
if last_kana == 'sokuon':
|
||
raise ValueError("Sokuon cannot precede Latin characters.")
|
||
|
||
char = chr(ord(char) - 0xff11 + 0x31)
|
||
characters.append(char)
|
||
|
||
last_kana = None
|
||
|
||
# Small vowel kana
|
||
elif char in _roomaji_small_kana:
|
||
combo = last_char + char
|
||
if combo in _roomaji_small_kana_combos:
|
||
characters[-1] = _roomaji_small_kana_combos[combo]
|
||
|
||
else:
|
||
# If we don't know what it is... act dumb and treat it as a
|
||
# full-size vowel. Better than bailing, and seems to occur a
|
||
# lot, e.g. ピィ is "pii"
|
||
characters.append(_roomaji_small_kana[char])
|
||
|
||
# Youon
|
||
elif char in _roomaji_youon:
|
||
if last_kana[-1] != 'i' or last_kana == 'i':
|
||
raise ValueError("Youon must follow an -i sound.")
|
||
|
||
# Drop the -i and append the ya/yu/yo sound
|
||
new_sound = _roomaji_youon[char]
|
||
if last_kana in ['shi', 'ji']:
|
||
# Strip the y-
|
||
new_char = last_kana[:-1] + new_sound[1:]
|
||
else:
|
||
new_char = last_kana[:-1] + new_sound
|
||
|
||
characters[-1] = new_char
|
||
last_kana = new_char
|
||
|
||
# Sokuon
|
||
elif char in (u'っ', u'ッ'):
|
||
# Remember it and double the consonant next time around
|
||
last_kana = 'sokuon'
|
||
|
||
# Extended vowel or n
|
||
elif char == u'ー':
|
||
if last_kana[-1] not in vowels:
|
||
raise ValueError(u"'ー' must follow by a vowel.")
|
||
characters.append(last_kana[-1])
|
||
|
||
last_kana = None
|
||
|
||
# Regular ol' kana
|
||
elif char in _roomaji_kana:
|
||
kana = _roomaji_kana[char]
|
||
|
||
if last_kana == 'sokuon':
|
||
if kana[0] in vowels:
|
||
raise ValueError("Sokuon cannot precede a vowel.")
|
||
|
||
characters.append(kana[0])
|
||
elif last_kana == 'n' and kana[0] in vowels:
|
||
characters.append("'")
|
||
|
||
characters.append(kana)
|
||
|
||
last_kana = kana
|
||
|
||
# Not Japanese?
|
||
else:
|
||
if last_kana == 'sokuon':
|
||
raise ValueError("Sokuon must be followed by another kana.")
|
||
|
||
characters.append(char)
|
||
|
||
last_kana = None
|
||
|
||
last_char = char
|
||
|
||
|
||
if last_kana == 'sokuon':
|
||
raise ValueError("Sokuon cannot be the last character.")
|
||
|
||
return unicode(''.join(characters))
|