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words_to_jyutping.py
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words_to_jyutping.py
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import sqlite3, re, json, string
# just put in lowercase for consonants
consonants = {'B': 'b',
'CH': 'ch',
'D': 'd',
'DH': 'd',
'F': 'f',
'G': 'g',
'HH': 'h',
'JH': 'zj',
'K': 'k',
'L': 'l',
'M': 'm',
'N': 'n',
'NG': 'ng',
'P': 'p',
'R': 'r',
'S': 's',
'SH': 'sh',
'T': 't',
'TH': 'f',
'V': 'f',
'W': 'w',
'Y': 'j',
'Z': 's',
'ZH': 'sh'
}
end_conses = {'B': 'p',
'CH': 'cj',
'D': 't',
'F': 'f',
'G': 'k',
# 'JH': 'zj',
'K': 'k',
'L': '',
'M': 'm',
'N': 'n',
'NG': 'ng',
'P': 'p',
'S': 's',
'T': 't',
'TH': 'f',
'Z': 's'}
# AA R => aa, but AE R => e aa
# faster => faaas toe
# beast => bist
vowels = {'AA': 'aa',
'AE': 'e',
'AH': 'a',
'AO': 'o', # AO L => o small
'AW': 'aau',
'AY': 'aai', # exception: AY T => ait (e.g. night)
'EH': 'e',
'ER': 'oe', # aa if last mark
'EY': 'ei',
'IH': 'i',
'IY': 'i',
'OW': 'ou',
'OY': 'oi',
'UH': 'u',
'UW': 'u'}
# append to vowel if next is m, n, ng, p, t, k, b, d or g,
special_cases = {
'AE L': 'eu',
'AA R': 'aa',
'AW T': 'aut'
}
devoice = {'b': 'p', 'd': 't', 'g': 'k'}
# every syllable is [C]V(C)
def word_to_jyutping(s, cur_cmu=None, debug=False):
locally_open_cmu = False
if cur_cmu is None:
con_cmu = sqlite3.connect('cmudict.db')
cur_cmu = con_cmu.cursor()
locally_open_cmu = True
assert cur_cmu is not None
# attempts to convert a single english word to jcz using the cmud database
# input should only be ASCII, and should not have spaces
# if nothing is found, the input falls through
if ' ' in s:
return s # falls through
try:
s.encode('ascii')
except:
return s # falls through
# try to look in cmudict
cur_cmu.execute('SELECT pronunciation FROM dictionary WHERE word LIKE ?', (s,))
p = cur_cmu.fetchone()
if p is None:
return None
p = p[0]
# now start to match the pronunciation
# clean up the pronunciation of numbers (the emphasis marks)
p = re.sub('\d+', '', p)
split = p.split(' ')
if debug:
print(split)
i = 0
outs = []
syllable = ''
carry_w = False
carry_r = False
# carry_j = False
while i < len(split):
if carry_r:
syllable += "r"
carry_r = False
if carry_w:
syllable += "w"
carry_w = False
curr_consts = ""
# if carry_j:
# syllable += "j"
# carry_j = False
# curr_consts = ""
while split[i] in consonants:
if i == 0 and split[0] == 'V':
curr_consts += 'v'
else:
curr_consts += consonants[split[i]]
i += 1
if i == len(split):
if curr_consts[0] == 'r':
if curr_consts[1:] in devoice:
outs.append('aa'+devoice[curr_consts[1:]])
else:
outs.append('aa'+curr_consts[1:])
elif len(curr_consts) == 1:
outs[-1] += curr_consts
else:
outs.append(curr_consts)
return outs
if curr_consts == 'th':
curr_consts = 'd'
if len(curr_consts) > 1 and curr_consts[0] == 'r':
outs.append('aa')
curr_consts = curr_consts[1:]
if len(curr_consts) > 2 and curr_consts[0:2] in {'sh','ch','zh','sj','zj','cj'}:
outs.append(curr_consts[0:2])
curr_consts = curr_consts[2:]
syllable += curr_consts
# split[i] is a vowel
if split[i] == 'ER' and i == len(split) - 1:
vowel = 'aa'
else:
vowel = vowels[split[i]]
other_bit = ""
if i+1 < len(split) and split[i] == 'ER' and split[i+1] in vowels:
carry_r = True
# if i+1 < len(split) and split[i] == 'IY' and split[i+1] in vowels: # reinforcement vs rearrangement
# carry_j = True
if i > 0 and i+1 < len(split) and split[i] in 'AH' and split[i+1] == 'L':
# i==0: alacrity
if i > 1 and split[i-1] == 'Y':
# calculator
syllable = syllable[:-1] + 'i'
vowel = 'u'
i += 1
elif i == len(split)-2:
# technical
vowel = 'ou'
i += 2
else:
vowel = 'a'
i += 1
elif split[i] == 'EH' and split[i+1] == 'L' and split[i+2] in consonants:
vowel = 'eu'
i += 2
elif split[i-1] == 'Y' and split[i] == 'UW':
syllable = syllable[:-1] + "i"
vowel = 'u'
i += 1
elif i+2 < len(split) and split[i] == 'AE' and split[i+1] == 'P' and split[i+2] in vowels:
vowel = 'ep'
i += 1
elif i+2 < len(split) and split[i] == 'AE' and split[i+1] in {'G','K'} and split[i+2] == 'L':
other_bit = 'k'
i += 2
elif split[i] == 'AW' and split[i+1] in vowels:
i += 1
carry_w = True
elif i+1 < len(split) and split[i] == 'AO' and split[i+1] == 'R':
vowel = 'o'
if i+2 < len(split) and split[i+2] in end_conses and split[i+2] != 'G': # organic
other_bit = end_conses[split[i+2]]
if split[i+2] in {'S','D'}:
i += 1
# i += 1
i += 2
elif i+1 < len(split) and split[i]+' '+split[i+1] in special_cases:
vowel = special_cases[split[i]+' '+split[i+1]]
i += 2
else:
if i+2 < len(split) and split[i+1] in {'B','G','P','K'} \
and split[i+2] in {'W','Y','L','R'}:
other_bit = end_conses[split[i+1]]
if split[i+1] == 'B' and split[i+2] == 'W':
i += 2
else:
i += 1
elif i+1 < len(split) and split[i][-1] == 'H' and split[i+1] in end_conses:
other_bit = end_conses[split[i+1]]
if i+2 < len(split) and split[i+2] in vowels:
i += 1
elif i+2 < len(split) and split[i+2] == 'Y':
i += 1
else:
i += 2
elif i+1 < len(split) and split[i+1] in end_conses:
if split[i] == 'AY' and split[i+1] in {'P','T','K'}:
vowel = 'ai' # hike is haik not haaik
i += 1
elif split[i] in vowels and split[i+1] in {'N', 'M', 'T'}:
vowel = vowels[split[i]]
if split[i+1] in {'N', 'M'} and i+1 != len(split) - 1 and split[i+2] in vowels.keys() | {'Y'}:
if split[i] == 'AA':
vowel += end_conses[split[i+1]]
elif not (split[i] in {'AW', 'AY', 'EY', 'OW', 'OY'} and split[i+1] == 'T'): # dipthongs, makes things sound more cantonese
vowel += end_conses[split[i+1]]
if i+2 < len(split) and split[i+2] in vowels.keys() | {'Y'}:
other_bit = ''
i += 1
else:
i += 2 # skip N/M/T as next onset
elif i+2 < len(split) and split[i+2] in vowels:
# other_bit = end_conses[split[i+1]]
i += 1
elif i+2 < len(split) and split[i+2] in 'R': # {'W','Y','L','R'}
other_bit = end_conses[split[i+1]]
i += 1
else:
other_bit = end_conses[split[i+1]]
i += 2
else:
i += 1
#further adjustment
# now len(split)-2 is N/K and i=len(split)-1 is T
if (i == len(split)-1 or (i+1 < len(split) and split[i+1] in consonants)) and split[i-1] in {'N','K'} and split[i] in {'T','D'}:
# skip the T as well
i += 1
elif i+1 < len(split) and split[i] == 'P' and split[i+1] in consonants \
and split[i+1] not in {'W','Y','L','R'}:
# split[i+1] cannot be semivowel W/Y
# skip the P
i += 1
elif i < len(split) and split[i-1] == 'NG' and split[i] == 'K':
i += 1
# skip the K
if i + 1 < len(split) and vowel != "" and other_bit != "" and \
split[i] in {'S','Z'} and split[i+1] in consonants.keys() - {'Y'}:
other_bit += 's'
if split[i+1] not in {'P','B'}:
i += 1
syllable += vowel
syllable += other_bit
outs.append(syllable)
syllable = ""
if locally_open_cmu:
con_cmu.close()
return outs