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filter_line_sample1.py
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filter_line_sample1.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import os
import re
import sys
import string
import random
import textwrap
import unicodedata
LEFT_PUNCTS = "\"'(（[{‘“〈《「『【〔"
RIGHT_PUNCTS = "\"')）]}’”〉》」』】〕"
MIDDLE_PUNCTS = "!&*,./:;?@\\_~·、。々！，：；？—…"
DIGIT_PUNCTS = ("#$¥", "+-*/×÷=≠≈<>≤≥^", "%°")
ALL_PUNCTS = (LEFT_PUNCTS + RIGHT_PUNCTS + MIDDLE_PUNCTS + ''.join(DIGIT_PUNCTS))
re_noleft = re.compile(r'^[!%),.:;>?\]}°·’”、。〉》」』】〕！），：；？]+')
re_noright = re.compile(r'[$\(\[{¥·‘“〈《「『【〔（]+$')
re_empty_pair = re.compile(r'[%s]+[%s]*[%s]+' %
tuple(map(re.escape, (LEFT_PUNCTS[2:], MIDDLE_PUNCTS, RIGHT_PUNCTS[2:]))))
re_qs = re.compile('\?\s*\?|？\s*？|[\ufffc\ufffd]')
re_open = re.compile(r'([%s])\s*[%s]+' % tuple(map(re.escape,
(LEFT_PUNCTS[2:], MIDDLE_PUNCTS + DIGIT_PUNCTS[2]))))
re_close = re.compile(r'[&*,/:;@\\_·、，：；%s]+\s*([%s])' % tuple(map(re.escape,
(DIGIT_PUNCTS[0] + DIGIT_PUNCTS[1], RIGHT_PUNCTS[2:]))))
re_dup = re.compile(r'[!,:;?@\\·、。！，：；？ ]{2,}')
re_exqm = re.compile(r'^[!?]{1,5}\s*$|^[！？]{1,5}$')
re_space = re.compile(r'\s+')
re_fwspace_left = re.compile(r'([（‘“〈《「『【〔]+)\s+')
re_fwspace_right = re.compile(r'\s+([）’”〉》」』】〕]+)')
re_fwspace_mid = re.compile(r'\s+([·、。々！，：；？—…]+)\s+')
re_allpuncts = re.compile(r'[%s ]+' % re.escape(''.join(sorted(set(ALL_PUNCTS)))))
RE_WS_IN_FW = re.compile(
r'([‘’“”…─\u2e80-\u312f\u3200-\u32ff\u3400-\u4dbf\u4e00-\u9fff'
'\uf900-\ufaff\ufe30-\ufe57\uff00-\uffef\U00020000-\U0002A6DF'
'\U0002A700-\U0002EBEF\U00030000-\U0003134F'
'\U0002F800-\U0002FA1F])\s+(?=[‘’“”…\u2e80-\u312f\u3200-\u32ff'
'\u3400-\u4dbf\u4e00-\u9fff\uf900-\ufaff\ufe30-\ufe57\uff00-\uffef'
'\U00020000-\U0002A6DF\U0002A700-\U0002EBEF'
'\U00030000-\U0003134F\U0002F800-\U0002FA1F])')
detokenize = lambda s: RE_WS_IN_FW.sub(r'\1', s)
random.seed(12345)
class CJKTextWrapper(textwrap.TextWrapper):
wordsep_simple_re = re.compile(r'(\s+|[%s]*[\u4e00-\u9FFF][%s]*|[¥$+-]*\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 remove_dup_puncts(match):
s = match.group(0)
if s.rstrip() == s[0] and s[0] in '!,:;?':
return s
elif re_exqm.match(s):
return s
elif not s.strip():
return ' '
return s.strip()[0]
def remove_fw_space(x):
if ' ' not in x:
return x
merged = []
last_width = None
for frag in x.split():
this_width = (unicodedata.east_asian_width(frag[0]) in 'FW')
if last_width is None or this_width == last_width == True:
merged.append(frag)
else:
merged.append(' ' + frag)
last_width = (unicodedata.east_asian_width(frag[-1]) in 'FW')
return ''.join(merged)
def load_simplewordlist(filename):
words = []
with open(filename, 'r', encoding='utf-8') as f:
for ln in f:
words.append(ln.strip())
return words
if __name__ == '__main__':
script_dir = os.path.abspath(os.path.dirname(__file__))
char_set = set(ALL_PUNCTS)
char_set.add(' ')
unusual_set = set(char_set)
char_set.update(string.ascii_letters)
char_set.update(string.digits)
if len(sys.argv) < 2 or sys.argv[1] == 'zhs':
lang = 'chi_sim'
filename_chlist = 'wordlist/zhs_chars.txt'
filename_phonetic = 'wordlist/pinyin.txt'
else:
lang = 'chi_tra'
filename_chlist = 'wordlist/zht_chars.txt'
filename_phonetic = 'wordlist/bopomofo.txt'
chlist = load_simplewordlist(
os.path.join(script_dir, filename_chlist))
char_set.update(chlist)
unusual_set.update(chlist[4000:])
char_set.add('〇')
phlist = ''.join(load_simplewordlist(
os.path.join(script_dir, filename_phonetic)))
unusual_set.update(set(phlist).difference(string.ascii_letters))
char_set.update(phlist)
max_length = 50
unseen_lengths = {ch: set(range(1, max_length+1)) for ch in char_set}
seen_lines = set()
for raw_ln in sys.stdin.buffer:
try:
long_ln = raw_ln.strip().decode('utf-8')
except UnicodeError:
continue
if '??' in long_ln:
continue
long_ln = detokenize(re_space.sub(' ', long_ln))
long_ln = re_fwspace_mid.sub(r'\1', long_ln)
long_ln = re_fwspace_left.sub(r'\1', long_ln)
long_ln = re_fwspace_right.sub(r'\1', long_ln)
long_ln = re_empty_pair.sub('', long_ln)
long_ln = re_open.sub(r'\1', long_ln)
long_ln = re_close.sub(r'\1', long_ln)
long_ln = long_ln.replace('...', '…').replace('… …', '……')
long_ln = re_dup.sub(remove_dup_puncts, long_ln)
long_ln = remove_fw_space(long_ln)
if ' ' in long_ln:
merged = []
last_width = None
for frag in long_ln.split():
this_width = unicodedata.east_asian_width(frag[0])
if last_width is None or this_width == last_width == True:
merged.append(frag)
else:
merged.append(' ' + frag)
last_width = this_width
if len(long_ln) < max_length:
lns = (long_ln,)
else:
wrapper = CJKTextWrapper(width=round(random.triangular(30, max_length, max_length)))
lns = wrapper.wrap(long_ln)
for ln in lns:
if not ln:
continue
elif re_qs.search(ln):
continue
result = []
unknown = 0
unusual = 0
remove_chars = set()
for ch in ln:
if ch not in char_set:
unknown += 1
category = unicodedata.category(ch)
if category[0] == 'Lo':
result.append(ch)
elif ch == '\u3000' or category[0] in 'PS':
result.append(' ')
continue
unusual += (ch in unusual_set)
result.append(ch)
remove_chars.add(ch)
result_line = ''.join(result).strip()
result_line = re_noright.sub('', re_noleft.sub('', result_line))
if not result_line:
continue
result_length = len(result_line)
if ((len(set(result_line)) == 1 and result_length > 2) or
unknown / result_length >= 0.5 or
(unusual / result_length > 0.5 and result_length > 2)
):
continue
has_unseen = False
for ch in remove_chars:
lengths = unseen_lengths.get(ch, ())
if result_length in lengths:
lengths.remove(result_length)
has_unseen = True
unique_ratio = len(set(result_line)) / result_length
if (has_unseen or
# or random.random() < 0.0015):
result_length >= 40 and random.random() < 0.005 * unique_ratio):
result_charonly = re_allpuncts.sub('', result_line)
if result_charonly in seen_lines:
continue
seen_lines.add(result_charonly)
print(result_line)