2009-07-26 00:21:39 +00:00
|
|
|
|
# encoding: utf8
|
2011-01-26 01:14:42 +00:00
|
|
|
|
"""Provides `romanize()` for romanizing simple Japanese text.
|
|
|
|
|
|
|
|
|
|
|
|
Also provides available romanizers in a dictionary keyed by language identifier.
|
|
|
|
|
|
"""
|
|
|
|
|
|
|
|
|
|
|
|
class Romanizer(object):
|
|
|
|
|
|
def __init__(self, parent=None, **tables):
|
|
|
|
|
|
"""Create a Romanizer
|
|
|
|
|
|
|
|
|
|
|
|
parent: A LookupTables to base this one on
|
|
|
|
|
|
tables: Dicts that become the object's attributes. If a parent is given,
|
|
|
|
|
|
its tables are used, and updated with the given ones
|
|
|
|
|
|
"""
|
|
|
|
|
|
self.parent = parent
|
|
|
|
|
|
if parent:
|
|
|
|
|
|
self.tables = parent.tables
|
|
|
|
|
|
for name, table in tables.items():
|
|
|
|
|
|
# Take a copy -- don't want to clobber the parent's tables
|
|
|
|
|
|
self.tables[name] = dict(self.tables[name])
|
|
|
|
|
|
self.tables[name].update(table)
|
2009-07-26 00:21:39 +00:00
|
|
|
|
else:
|
2011-01-26 01:14:42 +00:00
|
|
|
|
self.tables = tables
|
|
|
|
|
|
|
|
|
|
|
|
for name, table in self.tables.items():
|
|
|
|
|
|
setattr(self, name, table)
|
|
|
|
|
|
|
|
|
|
|
|
def romanize(self, string):
|
|
|
|
|
|
"""Convert 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 0xff01 <= ord(char) <= 0xff5e:
|
|
|
|
|
|
if last_kana == 'sokuon':
|
|
|
|
|
|
raise ValueError("Sokuon cannot precede Latin characters.")
|
|
|
|
|
|
|
|
|
|
|
|
# XXX Real Unicode decomposition would be nicer
|
|
|
|
|
|
char = chr(ord(char) - 0xff01 + 0x21)
|
|
|
|
|
|
characters.append(char)
|
|
|
|
|
|
|
|
|
|
|
|
last_kana = None
|
|
|
|
|
|
|
|
|
|
|
|
# Small vowel kana
|
|
|
|
|
|
elif char in self.roomaji_small_kana:
|
|
|
|
|
|
combo = last_char + char
|
|
|
|
|
|
if combo in self.roomaji_small_kana_combos:
|
|
|
|
|
|
characters[-1] = self.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(self.roomaji_small_kana[char])
|
|
|
|
|
|
|
|
|
|
|
|
last_kana = self.roomaji_small_kana[char]
|
|
|
|
|
|
|
|
|
|
|
|
# Youon
|
|
|
|
|
|
elif char in self.roomaji_youon:
|
|
|
|
|
|
if not last_kana or 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 = self.roomaji_youon[char]
|
|
|
|
|
|
if last_kana in self.y_drop:
|
|
|
|
|
|
# Strip the y-
|
|
|
|
|
|
new_char = self.y_drop[last_kana] + 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.")
|
|
|
|
|
|
if last_kana[-1] in self.lengthened_vowels:
|
|
|
|
|
|
characters[-1] = characters[-1][:-1]
|
|
|
|
|
|
characters.append(self.lengthened_vowels[last_kana[-1]])
|
|
|
|
|
|
else:
|
|
|
|
|
|
characters.append(last_kana[-1])
|
|
|
|
|
|
|
|
|
|
|
|
last_kana = None
|
|
|
|
|
|
|
|
|
|
|
|
# Regular ol' kana
|
|
|
|
|
|
elif char in self.roomaji_kana:
|
|
|
|
|
|
kana = self.roomaji_kana[char]
|
|
|
|
|
|
|
|
|
|
|
|
if last_kana == 'sokuon':
|
|
|
|
|
|
if kana[0] in vowels:
|
2021-03-07 19:16:57 +00:00
|
|
|
|
characters.append("'")
|
|
|
|
|
|
else:
|
|
|
|
|
|
characters.append(kana[0])
|
2011-01-26 01:14:42 +00:00
|
|
|
|
elif last_kana == 'n' and kana[0] in vowels:
|
|
|
|
|
|
characters.append("'")
|
|
|
|
|
|
|
|
|
|
|
|
# Special characters fo doubled kana
|
|
|
|
|
|
if kana[0] in self.lengthened_vowels and characters and kana == characters[-1][-1]:
|
|
|
|
|
|
kana = self.lengthened_vowels[kana[0]]
|
|
|
|
|
|
characters[-1] = characters[-1][:-1]
|
|
|
|
|
|
|
|
|
|
|
|
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.")
|
|
|
|
|
|
|
2015-10-05 15:11:08 +00:00
|
|
|
|
return u''.join(characters)
|
2011-01-26 01:14:42 +00:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
romanizers = dict()
|
|
|
|
|
|
|
|
|
|
|
|
romanizers['en'] = Romanizer(
|
|
|
|
|
|
roomaji_kana={
|
|
|
|
|
|
# Hiragana
|
|
|
|
|
|
u'あ': 'a', u'い': 'i', u'う': 'u', u'え': 'e', u'お': 'o',
|
|
|
|
|
|
u'か': 'ka', u'き': 'ki', u'く': 'ku', u'け': 'ke', u'こ': 'ko',
|
|
|
|
|
|
u'さ': 'sa', u'し': 'shi', u'す': 'su', u'せ': 'se', u'そ': 'so',
|
|
|
|
|
|
u'た': 'ta', u'ち': 'chi', u'つ': 'tsu', u'て': 'te', u'と': 'to',
|
|
|
|
|
|
u'な': 'na', u'に': 'ni', u'ぬ': 'nu', u'ね': 'ne', u'の': 'no',
|
|
|
|
|
|
u'は': 'ha', u'ひ': 'hi', u'ふ': 'fu', u'へ': 'he', u'ほ': 'ho',
|
|
|
|
|
|
u'ま': 'ma', u'み': 'mi', u'む': 'mu', u'め': 'me', u'も': 'mo',
|
|
|
|
|
|
u'や': 'ya', u'ゆ': 'yu', u'よ': 'yo',
|
|
|
|
|
|
u'ら': 'ra', u'り': 'ri', u'る': 'ru', u'れ': 're', u'ろ': 'ro',
|
|
|
|
|
|
u'わ': 'wa', u'ゐ': 'wi', u'ゑ': 'we', u'を': 'wo',
|
|
|
|
|
|
u'ん': 'n',
|
|
|
|
|
|
u'が': 'ga', u'ぎ': 'gi', u'ぐ': 'gu', u'げ': 'ge', u'ご': 'go',
|
|
|
|
|
|
u'ざ': 'za', u'じ': 'ji', u'ず': 'zu', u'ぜ': 'ze', u'ぞ': 'zo',
|
|
|
|
|
|
u'だ': 'da', u'ぢ': 'ji', u'づ': 'dzu', u'で': 'de', u'ど': 'do',
|
|
|
|
|
|
u'ば': 'ba', u'び': 'bi', u'ぶ': 'bu', u'べ': 'be', u'ぼ': 'bo',
|
|
|
|
|
|
u'ぱ': 'pa', u'ぴ': 'pi', u'ぷ': 'pu', u'ぺ': 'pe', u'ぽ': 'po',
|
|
|
|
|
|
|
|
|
|
|
|
# Katakana
|
|
|
|
|
|
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',
|
|
|
|
|
|
u'ヴ': 'vu',
|
|
|
|
|
|
},
|
|
|
|
|
|
|
|
|
|
|
|
roomaji_youon={
|
|
|
|
|
|
# Hiragana
|
|
|
|
|
|
u'ゃ': 'ya', u'ゅ': 'yu', u'ょ': 'yo',
|
|
|
|
|
|
|
|
|
|
|
|
# Katakana
|
|
|
|
|
|
u'ャ': 'ya', u'ュ': 'yu', u'ョ': '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={
|
|
|
|
|
|
# These are, by the way, fairly arbitrary. "shi xi" to mean "sy" is
|
|
|
|
|
|
# particularly weird, but it seems to be what GF intends
|
|
|
|
|
|
|
|
|
|
|
|
# Simple vowel replacement
|
|
|
|
|
|
u'ウィ': 'wi', u'ウゥ': 'wu', u'ウェ': 'we', u'ウォ': 'wo',
|
|
|
|
|
|
u'ヴァ': 'va', u'ヴィ': 'vi', u'ヴェ': 've', u'ヴォ': 'vo',
|
|
|
|
|
|
u'チェ': 'che',
|
|
|
|
|
|
u'シェ': 'she',
|
|
|
|
|
|
u'ジェ': 'je',
|
|
|
|
|
|
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',
|
|
|
|
|
|
|
|
|
|
|
|
# Not so much
|
|
|
|
|
|
u'シィ': 'sy',
|
|
|
|
|
|
u'ミィ': 'my',
|
|
|
|
|
|
u'ビィ': 'by',
|
|
|
|
|
|
u'ピィ': 'py',
|
|
|
|
|
|
},
|
|
|
|
|
|
lengthened_vowels={},
|
|
|
|
|
|
y_drop={'chi': 'ch', 'shi': 'sh', 'ji': 'j'},
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
romanizers['cs'] = Romanizer(parent=romanizers['en'],
|
|
|
|
|
|
roomaji_kana={
|
|
|
|
|
|
u'し': u'ši', u'ち': u'či', u'つ': u'cu',
|
|
|
|
|
|
u'や': u'ja', u'ゆ': u'ju', u'よ': u'jo',
|
|
|
|
|
|
u'じ': u'dži', u'ぢ': u'dži',
|
|
|
|
|
|
u'シ': u'ši', u'チ': u'či', u'ツ': u'cu',
|
|
|
|
|
|
u'ヤ': u'ja', u'ユ': u'ju', u'ヨ': 'jo',
|
|
|
|
|
|
u'ジ': u'dži', u'ヂ': u'dži',
|
|
|
|
|
|
},
|
|
|
|
|
|
roomaji_youon={
|
|
|
|
|
|
u'ゃ': 'ja', u'ゅ': 'ju', u'ょ': 'jo',
|
|
|
|
|
|
u'ャ': 'ja', u'ュ': 'ju', u'ョ': 'jo',
|
|
|
|
|
|
},
|
|
|
|
|
|
roomaji_small_kana_combos={
|
|
|
|
|
|
u'チェ': u'če', u'シェ': u'še', u'ジェ': u'dže',
|
|
|
|
|
|
u'テェ': u'tje', u'デェ': u'dje',
|
|
|
|
|
|
u'シィ': u'sí', u'ミィ': u'mí', u'ビィ': u'bí', u'ピィ': u'pí',
|
|
|
|
|
|
},
|
|
|
|
|
|
lengthened_vowels={'a': u'á', 'e': u'é', 'i': u'í', 'o': u'ó', 'u': u'ú'},
|
|
|
|
|
|
y_drop={u'či': u'č', u'ši': u'š', u'dži': u'dž', u'ni': u'ňj'},
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
def romanize(string, lang='en'):
|
|
|
|
|
|
"""Convert a string of kana to roomaji."""
|
|
|
|
|
|
|
|
|
|
|
|
# Get the correct romanizer; fall back to English
|
|
|
|
|
|
romanizer = romanizers.get(lang, 'en')
|
|
|
|
|
|
|
|
|
|
|
|
# Romanize away!
|
|
|
|
|
|
return romanizer.romanize(string)
|
