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generate_text.py
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generate_text.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import re
import sys
import math
import random
import string
import textwrap
import itertools
import unicodedata
import collections
random.seed(12345)
LEFT_PUNCTS = "\"'([{‘“〈《「『【〔"
RIGHT_PUNCTS = "\"')]}’”〉》」』】〕"
MIDDLE_PUNCTS = "!&*,./:;?@\\_~·、。々!,:;?—…"
DIGIT_PUNCTS = ("#$¥", "+-*/×÷=≠≈<>≤≥^", "%")
PUNCT_PATTERN_L = {
':': '"\'([{',
':': '“〈《「『【〔',
}
PUNCT_PATTERN_R = {
'"': ('.!?', ',.;'),
'”': ('。!?', ',。、;'),
'」': ('。!?', ',。、;'),
'》': ('', ':,。'),
')': ('.!?', ',.;'),
']': ('.', ',;'),
'}': ('.', ',;'),
}
LEFT_MID_PUNCTS = frozenset(LEFT_PUNCTS + MIDDLE_PUNCTS)
ALL_PUNCTS = frozenset(LEFT_PUNCTS + RIGHT_PUNCTS + MIDDLE_PUNCTS)
re_alphanum = re.compile('[A-Za-z0-9]')
class CJKTextWrapper(textwrap.TextWrapper):
wordsep_simple_re = re.compile(r'(\s+|[%s]*[\u4e00-\u9FFF][%s]*|[¥$+-]*\d+(?:\.\d+)?(?:e[+-]\d+)?)' % (
re.escape(LEFT_PUNCTS), re.escape(RIGHT_PUNCTS + MIDDLE_PUNCTS.replace('¥', ''))
))
def _split(self, text):
chunks = self.wordsep_simple_re.split(text)
return [c for c in chunks if c]
def load_wordlist(bigram_freq_file, char_list):
total1 = total2 = 0
max_in_freq2 = 0
freq1 = {}
freq1_start = {}
freq2 = collections.defaultdict(list)
with open(bigram_freq_file, 'r', encoding='utf-8') as f:
for ln in f:
fields = ln.rstrip().split(' ')
if not fields[1]:
continue
word = fields[0]
freq = int(fields[1])
if len(word) < 2:
if word not in char_list:
continue
total1 += freq
freq1[word] = freq
elif word[0] == '\uf000':
if word[1] not in char_list:
continue
total2 += freq
freq1_start[word[1]] = freq
elif word[0] not in char_list:
continue
else:
if word[1] not in char_list and word[1] not in LEFT_MID_PUNCTS:
freq2[word[0]].append(('', freq))
else:
freq2[word[0]].append((word[1:], freq))
total2 += freq
if freq > max_in_freq2:
max_in_freq2 = freq
#print(total1, total2)
#print(max_in_freq1, max_in_freq2)
for word in freq1:
if word in freq1_start:
freq1[word] = freq1_start[word] / total2
else:
freq1[word] /= total1
for word1 in freq2:
for i, (word2, freq) in enumerate(freq2[word1]):
freq2[word1][i] = (word2, freq / total2)
return freq1, freq2
def load_simplewordlist(filename):
words = []
with open(filename, 'r', encoding='utf-8') as f:
for ln in f:
words.append(ln.strip())
return words
class TextGenerator:
def __init__(self, freq1, freq2, add_words, eng_words):
self.chars = []
self.char_freq = []
for word, freq in freq1.items():
self.chars.append(word)
self.char_freq.append(freq)
self.chars_set = frozenset(self.chars)
self.char_cum_weights = tuple(itertools.accumulate(self.char_freq))
self.bigrams = freq2
for word1, wl2 in freq2.items():
wlist2, weights2 = zip(*wl2)
self.bigrams[word1] = (wlist2, tuple(itertools.accumulate(weights2)))
# pinyin, bpmf
self.add_words = list(set(add_words) |
set(x.upper() for x in eng_words))
self.eng_words = list(set(eng_words) |
set(x.lower() for x in eng_words) |
set(x.upper() for x in eng_words) |
set(x.title() for x in eng_words))
self.cur_chars = self.chars.copy()
self.cur_char_freq = self.char_freq.copy()
self.cur_char_cum_weights = self.char_cum_weights
self.unused_chars = list(self.chars) * 2
self.unused_eng = list(string.ascii_letters) * 2
self.unused_add = sorted(set(itertools.chain(*add_words))) * 2
self.unused_digit = list(string.digits + ''.join(DIGIT_PUNCTS)) * 2
self.unused_punc = sorted(ALL_PUNCTS) * 2
self.last_char = None
self.status = 0
self.left_punc = None
def get_eng_words(self):
words = []
for word in random.choices(self.eng_words, k=random.randint(1, 3)):
# punc = random.randint(0, ws_weight)
# ws_weight = 50
# if not word[-1].isalpha():
# pass
# elif punc in (ws_weight + 1, ws_weight + 2):
# word += ','
# elif punc == ws_weight + 3:
# word += '.'
# elif punc == ws_weight + 4:
# word += ';'
# elif punc == ws_weight + 5:
# word += '?'
# elif punc == ws_weight + 6:
# word += '!'
# elif punc == ws_weight + 7:
# word += '_'
# elif punc == ws_weight + 8:
# word += '&'
# elif punc == ws_weight + 9:
# word += '@'
# elif punc == 13:
# word = '(%s)' % word
# elif punc == 14:
# word = '[%s]' % word
# elif punc == 15:
# word = '{%s}' % word
# elif punc == 16:
# word = '"%s"' % word
# elif punc == 17:
# word = "'%s'" % word
words.append(word)
result = ' '.join(words).replace('_ ', '_').replace('@ ', '@')
return result
def get_add_words(self):
result = ' '.join(
random.choices(self.add_words, k=random.randint(1, 2)))
if random.randint(0, 1) == 0:
result = '(%s)' % result
return result
def get_digits(self):
digit_num = random.randint(1, 3)
if digit_num == 1:
digit_type = random.randint(0, 2)
result = '%.5g' % math.exp(random.uniform(0, 16))
if digit_type == 1:
result = random.choice(DIGIT_PUNCTS[0]) + result
elif digit_type == 2:
result += random.choice(DIGIT_PUNCTS[2])
else:
result = ''
for i in range(digit_num):
if i > 0:
result += ' %s ' % random.choice(DIGIT_PUNCTS[1])
result += '%.5g' % math.exp(random.uniform(0, 16))
return result
def get_char(self):
get_single = True
if self.last_char in self.bigrams:
get_single = False
wlist2, cw2 = self.bigrams[self.last_char]
ch = random.choices(wlist2, cum_weights=cw2)[0]
if not ch:
get_single = True
if get_single:
if not self.cur_chars:
self.cur_chars = self.chars.copy()
self.cur_char_freq = self.char_freq.copy()
self.cur_char_cum_weights = self.char_cum_weights
ch = random.choices(
self.cur_chars, cum_weights=self.cur_char_cum_weights)[0]
if ch in self.unused_chars:
idx = self.unused_chars.index(ch)
del self.unused_chars[idx]
if ch not in self.unused_chars:
idx = self.cur_chars.index(ch)
del self.cur_chars[idx]
del self.cur_char_freq[idx]
self.cur_char_cum_weights = tuple(
itertools.accumulate(self.cur_char_freq))
return ch
def get_punc(self, punc_type=None):
if punc_type is None:
if self.left_punc is None:
punc_type = random.choice(('left', 'middle'))
else:
punc_type = 'right'
if punc_type == 'left':
self.left_punc = random.randrange(len(LEFT_PUNCTS))
word = LEFT_PUNCTS[self.left_punc]
elif punc_type == 'middle':
word = random.choice(MIDDLE_PUNCTS)
if word in PUNCT_PATTERN_L and random.randint(0, 1):
word += random.choice(PUNCT_PATTERN_L[word])
elif word == '…':
word += '…'
elif word == ',' and self.last_char in self.chars_set:
word = ','
# elif punc_type == 'right':
else:
word = RIGHT_PUNCTS[self.left_punc]
if word in PUNCT_PATTERN_R and random.randint(0, 1):
lr = random.randint(0, 1)
if lr == 0 and PUNCT_PATTERN_R[word][0]:
word = random.choice(PUNCT_PATTERN_R[word][0]) + word
elif lr == 1:
word += random.choice(PUNCT_PATTERN_R[word][1])
self.left_punc = None
return word
def get_next_word(self):
if self.left_punc:
# left
if self.status == 0:
next_types = ('char', 'eng')
else:
next_types = ('char', 'eng', 'right')
elif self.status == 0:
# start
next_types = ('char', 'left', 'eng', 'digit')
elif self.status == 1:
# char
next_types = ('char', 'middle', 'left', 'eng', 'add', 'digit')
elif self.status == 3:
# eng
next_types = ('char', 'middle', 'digit')
elif self.status == 4:
# add/digit
next_types = ('char', 'eng')
elif self.status == 5:
next_types = ('char',)
type_cum_weights = tuple(x + 500 for x in (0, 3, 5, 6, 7, 8))
next_type = random.choices(
next_types, cum_weights=type_cum_weights[:len(next_types)])[0]
if next_type == 'char':
word = self.get_char()
if not word:
return word
elif word in LEFT_MID_PUNCTS:
if word in LEFT_PUNCTS:
self.left_punc = LEFT_PUNCTS.index(word)
elif word == ',':
word = ','
self.status = 0
if word in self.unused_punc:
del self.unused_punc[self.unused_punc.index(word)]
if word == '…':
word += '…'
else:
self.status = 1
elif next_type in ('left', 'middle', 'right'):
word = self.get_punc(next_type)
self.status = 0
used_new = set(word).intersection(self.unused_punc)
for ch in used_new:
del self.unused_punc[self.unused_punc.index(ch)]
# elif next_type in ('eng', 'add', 'digit'):
else:
if next_type == 'eng':
unused = self.unused_eng
fn = self.get_eng_words
self.status = 3
elif next_type == 'add':
unused = self.unused_add
fn = self.get_add_words
self.status = 4
else:
unused = self.unused_digit
fn = self.get_digits
self.status = 4
if unused:
while True:
word = fn()
used_new = set(word).intersection(unused)
if used_new:
break
for ch in used_new:
del unused[unused.index(ch)]
else:
word = fn()
used_new = set(word).intersection(self.unused_punc)
for ch in used_new:
del self.unused_punc[self.unused_punc.index(ch)]
return word
def has_space(self, word):
if not self.last_char or not word:
return ''
ch_types = ['fw', 'fw']
for i, ch in enumerate((self.last_char, word[0])):
if re_alphanum.match(ch) or unicodedata.category(ch) in ('Ll', 'Lu'):
ch_types[i] = 'alphanum'
elif unicodedata.east_asian_width(ch) in 'FWA':
if ch in ALL_PUNCTS:
ch_types[i] = 'fw-p'
else:
ch_types[i] = 'fw'
elif ch in LEFT_PUNCTS:
ch_types[i] = 'left'
elif ch in RIGHT_PUNCTS:
ch_types[i] = 'right'
elif ch in '!*,.:;?':
ch_types[i] = 'stop'
else:
ch_types[i] = 'hw'
#print(self.last_char, word[0], ch_types)
if tuple(ch_types) in (
('alphanum', 'alphanum'),
('alphanum', 'fw'),
('alphanum', 'left'),
('alphanum', 'hw'),
('fw', 'alphanum'),
('fw', 'left'),
('fw', 'hw'),
('left', 'right'),
('left', 'stop'),
('left', 'hw'),
('right', 'alphanum'),
('right', 'fw'),
('right', 'left'),
('right', 'hw'),
('stop', 'alphanum'),
('stop', 'fw'),
('stop', 'left'),
('stop', 'stop'),
('stop', 'hw'),
('hw', 'alphanum'),
('hw', 'fw'),
('hw', 'left'),
('hw', 'stop'),
('hw', 'hw'),
):
return ' '
return ''
def generate_text(self, total_length=250000):
length = 0
result = []
unused_list = (
(self.unused_chars, self.get_char),
(self.unused_eng, self.get_eng_words),
(self.unused_add, self.get_add_words),
(self.unused_digit, self.get_digits),
(self.unused_punc, self.get_punc)
)
while length < total_length - sum(map(len, unused_list)) * 3:
word = self.get_next_word()
if word:
result.append(self.has_space(word) + word)
length += len(result[-1])
self.last_char = word[-1]
# print(unused_list)
while self.unused_chars:
self.status = 5
self.last_char = None
for i in range(random.randrange(1, 3)):
word = self.get_next_word()
if not word:
break
result.append(self.has_space(word) + word)
length += len(result[-1])
while any(x[0] for x in unused_list):
self.status = 0
for i in range(random.randrange(1, 10)):
word = self.get_next_word()
if not word:
continue
result.append(self.has_space(word) + word)
length += len(result[-1])
self.last_char = word[-1]
unused, fn = random.choice([x for x in unused_list if x[0]])
while True:
word = fn()
used_new = set(word).intersection(unused)
if used_new:
break
for ch in used_new:
del unused[unused.index(ch)]
result.append(self.has_space(word) + word)
length += len(result[-1])
self.last_char = word[-1]
while length < total_length:
word = self.get_next_word()
if word:
result.append(self.has_space(word) + word)
length += len(result[-1])
self.last_char = word[-1]
tw = CJKTextWrapper(width=40)
return tw.fill(''.join(result))
def generate_text(freq1, freq2, additional_list, eng_words, total_length=250000):
length = 0
wlist1 = [x[0] for x in freq1]
wlist1_orig = wlist1.copy()
weights1 = [x[1] for x in freq1]
weights1_orig = weights1.copy()
cum_weights1 = tuple(itertools.accumulate(weights1))
cum_weights1_orig = cum_weights1
unused = collections.Counter({x: 2 for x in wlist1})
unused_alphas = sorted(
set(string.ascii_letters).union(set(itertools.chain(*additional_list)))
) * 2
f2weights = {}
for word1, wl2 in freq2.items():
wlist2, weights2 = zip(*wl2)
f2weights[word1] = (wlist2, tuple(itertools.accumulate(weights2)))
def get_eng_words():
if random.randint(0, 1) == 0:
result = ' '.join(
(w.upper() if case == 1 else (w.title() if case == 2 else w)) + punct
for w, case, punct in ((
rw, random.randint(0, 2),
random.choice(('', '', '', ',', '.', ';', '?', '!')
)) for rw in random.choices(eng_words, k=random.randint(1, 3))
)
)
if not result[-1].isalpha():
result = result[-1]
else:
result = ' '.join(
random.choices(additional_list, k=random.randint(1, 2)))
if random.randint(0, 1) == 0:
result = '(%s)' % result
return result
def get_word(last_word, word):
nonlocal unused_alphas
if not word:
return None
elif word == '…' and last_word[-1] != '…':
return '……'
elif word == '—' and last_word[-1] != '—':
# return '——'
return '—'
# elif last_word in '\uf001\uf002' and word in '\uf001\uf002':
# return None
elif word == '\uf001':
if unused_alphas:
while True:
result = get_eng_words()
used_new = set(result).intersection(unused_alphas)
if used_new:
break
for ch in used_new:
del unused_alphas[unused_alphas.index(ch)]
else:
result = get_eng_words()
elif word == '\uf002':
num_type = random.randint(0, 5)
if num_type == 0:
result = str(random.randint(0, 2500))
elif num_type == 1:
result = '%.3f' % random.gauss(0, 10000)
elif num_type == 2:
result = str(random.randint(1900, 2025))
elif num_type == 3:
result = '¥%.2f' % random.gauss(200, 100)
elif num_type == 4:
result = '$%.2f' % random.gauss(200, 100)
else:
result = '%.5g' % math.exp(random.uniform(0, 16))
else:
result = word
ch1 = last_word[-1]
ch2 = result[0]
c1_ispunct = (ch1 in ALL_PUNCTS)
c2_ispunct = (ch2 in ALL_PUNCTS)
w1 = unicodedata.east_asian_width(ch1)
w2 = unicodedata.east_asian_width(ch2)
cat1 = unicodedata.category(ch1)
cat2 = unicodedata.category(ch2)
if cat1 == 'Lo' and cat2 == 'Lo':
return result
elif cat1 == 'Lo' and ch2 == ',':
return ','
elif c1_ispunct and c2_ispunct:
if (ch1 == ch2 or
(ch1 in LEFT_PUNCTS and ch2 not in LEFT_PUNCTS) or
(ch1 in MIDDLE_PUNCTS and ch2 in MIDDLE_PUNCTS)): # and
# ch1 not in DOUBLE_PUNCTS or ch2 not in DOUBLE_PUNCTS)):
return None
return result
elif ch1 == '\uf002' and ch2 in '%+-':
return result
elif (
(ch1 in '\uf001\uf002' and ch2 in '\uf001\uf002') or
(ch1 in '\uf001\uf002' and w2 in 'FWA' and not c2_ispunct) or
(c1_ispunct and ch1 not in LEFT_PUNCTS
and not c2_ispunct and w1 not in 'FWA') or
(not c1_ispunct and w1 in 'FWA' and
not c2_ispunct and w2 not in 'FWA') or
(w1 not in 'FWA' and not c1_ispunct and w2 in 'FWA') or
(w1 in 'FWA' and c2_ispunct and w2 not in 'FWA' and ch2 not in ',.:;!?"\')]}')):
result = ' ' + result
return result
result = []
last_ch = '啊'
while length < total_length - len(unused) * 3:
if not wlist1:
wlist1 = wlist1_orig.copy()
weights1 = weights1_orig.copy()
cum_weights1 = cum_weights1_orig
ch = random.choices(wlist1, cum_weights=cum_weights1)[0]
if unused and ch not in unused:
continue
word = get_word(last_ch, ch)
if not word:
continue
result.append(word)
unused[ch] -= 1
if unused[ch] <= 0:
idx = wlist1.index(ch)
del wlist1[idx]
del weights1[idx]
cum_weights1 = tuple(itertools.accumulate(weights1))
del unused[ch]
last_ch = word
length += len(word)
while True:
try:
wlist2, cw2 = f2weights[last_ch]
except KeyError:
break
ch = random.choices(wlist2, cum_weights=cw2)[0]
word = get_word(last_ch, ch)
if not word:
break
result.append(word)
if ch in unused:
unused[ch] -= 1
if unused[ch] <= 0:
idx = wlist1.index(ch)
del wlist1[idx]
del weights1[idx]
cum_weights1 = tuple(itertools.accumulate(weights1))
del unused[ch]
last_ch = ch
length += len(word)
while unused_alphas:
while True:
result = get_eng_words()
used_new = set(result).intersection(unused_alphas)
if used_new:
break
for ch in used_new:
del unused_alphas[unused_alphas.index(ch)]
result.append(' ' + word)
while unused:
ch = random.choices(wlist1, cum_weights=cum_weights1)[0]
if ch not in unused:
continue
word = get_word(last_ch, ch)
if not word:
continue
result.append(word)
unused[ch] -= 1
if unused[ch] <= 0:
idx = wlist1.index(ch)
del wlist1[idx]
del weights1[idx]
cum_weights1 = tuple(itertools.accumulate(weights1))
del unused[ch]
last_ch = ch
length += len(word)
try:
wlist2, cw2 = f2weights[last_ch]
except KeyError:
continue
ch = random.choices(wlist2, cum_weights=cw2)[0]
word = get_word(last_ch, ch)
if not word:
continue
result.append(word)
if ch in unused:
unused[ch] -= 1
if unused[ch] <= 0:
idx = wlist1.index(ch)
del wlist1[idx]
del weights1[idx]
cum_weights1 = tuple(itertools.accumulate(weights1))
del unused[ch]
last_ch = ch
length += len(word)
tw = CJKTextWrapper(width=40)
return tw.fill(''.join(result))
if __name__ == '__main__':
if len(sys.argv) < 2 or sys.argv[1] == 'zhs':
char_list = set(load_simplewordlist('wordlist/zhs_chars_7000.txt'))
char_list.add('〇')
freq1, freq2 = load_wordlist('wordlist/bigramfreq_zhs.txt', char_list)
#additional_list = load_simplewordlist('wordlist/pinyin.txt')
elif sys.argv[1] == 'zht':
char_list = set(load_simplewordlist('wordlist/zht_chars_7000.txt'))
char_list.add('〇')
freq1, freq2 = load_wordlist('wordlist/bigramfreq_zht.txt', char_list)
# disable bopomofo and pinyin
#additional_list = load_simplewordlist('wordlist/bopomofo.txt')
#additional_list = load_simplewordlist('wordlist/pinyin.txt')
else:
char_list = set(load_simplewordlist('wordlist/zh_all_chars.txt'))
char_list.add('〇')
freq1, freq2 = load_wordlist('wordlist/bigramfreq_zhs.txt', char_list)
tfreq1, tfreq2 = load_wordlist('wordlist/bigramfreq_zht.txt', char_list)
for word, freq in tfreq1.items():
if word in freq1:
freq1[word] = (freq1[word] + freq) / 2
else:
freq1[word] = freq
for word1, tfreqs in tfreq2.items():
freqs = dict(freq2.get(word1, ()))
for word2, freq in tfreqs:
if word2 in freqs:
freqs[word2] = (freqs[word2] + freq) / 2
else:
freqs[word2] = freq
freq2[word1] = list(freqs.items())
additional_list = []
eng_words = load_simplewordlist('wordlist/google-10000-english.txt')
tg = TextGenerator(freq1, freq2, additional_list, eng_words)
text = tg.generate_text(250000)
print(text)
with open('langdata/eng/eng.training_text', 'r', encoding='utf-8') as f:
print(f.read(), end='')