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60 lines
1.5 KiB
Python
60 lines
1.5 KiB
Python
import re
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import cn2an
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import opencc
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converter = opencc.OpenCC('jyutjyu')
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# List of (Latin alphabet, ipa) pairs:
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_latin_to_ipa = [(re.compile('%s' % x[0]), x[1]) for x in [
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('A', 'ei˥'),
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('B', 'biː˥'),
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('C', 'siː˥'),
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('D', 'tiː˥'),
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('E', 'iː˥'),
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('F', 'e˥fuː˨˩'),
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('G', 'tsiː˥'),
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('H', 'ɪk̚˥tsʰyː˨˩'),
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('I', 'ɐi˥'),
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('J', 'tsei˥'),
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('K', 'kʰei˥'),
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('L', 'e˥llou˨˩'),
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('M', 'ɛːm˥'),
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('N', 'ɛːn˥'),
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('O', 'ou˥'),
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('P', 'pʰiː˥'),
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('Q', 'kʰiːu˥'),
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('R', 'aː˥lou˨˩'),
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('S', 'ɛː˥siː˨˩'),
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('T', 'tʰiː˥'),
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('U', 'juː˥'),
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('V', 'wiː˥'),
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('W', 'tʊk̚˥piː˥juː˥'),
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('X', 'ɪk̚˥siː˨˩'),
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('Y', 'waːi˥'),
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('Z', 'iː˨sɛːt̚˥')
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]]
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def number_to_cantonese(text):
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return re.sub(r'\d+(?:\.?\d+)?', lambda x: cn2an.an2cn(x.group()), text)
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def latin_to_ipa(text):
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for regex, replacement in _latin_to_ipa:
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text = re.sub(regex, replacement, text)
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return text
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def cantonese_to_ipa(text):
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text = number_to_cantonese(text.upper())
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text = converter.convert(text).replace('-','').replace('$',' ')
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text = re.sub(r'[A-Z]', lambda x: latin_to_ipa(x.group())+' ', text)
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text = re.sub(r'[、；：]', '，', text)
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text = re.sub(r'\s*，\s*', ', ', text)
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text = re.sub(r'\s*。\s*', '. ', text)
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text = re.sub(r'\s*？\s*', '? ', text)
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text = re.sub(r'\s*！\s*', '! ', text)
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text = re.sub(r'\s*$', '', text)
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return text
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