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@@ -0,0 +1,240 @@
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+# Copyright (c) Alibaba, Inc. and its affiliates.
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+
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+import string
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+import logging
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+from typing import Any, List, Union
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+
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+
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+def isChinese(ch: str):
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+ if '\u4e00' <= ch <= '\u9fff' or '\u0030' <= ch <= '\u0039':
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+ return True
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+ return False
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+
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+
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+def isAllChinese(word: Union[List[Any], str]):
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+ word_lists = []
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+ for i in word:
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+ cur = i.replace(' ', '')
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+ cur = cur.replace('</s>', '')
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+ cur = cur.replace('<s>', '')
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+ word_lists.append(cur)
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+
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+ if len(word_lists) == 0:
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+ return False
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+
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+ for ch in word_lists:
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+ if isChinese(ch) is False:
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+ return False
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+ return True
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+
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+
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+def isAllAlpha(word: Union[List[Any], str]):
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+ word_lists = []
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+ for i in word:
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+ cur = i.replace(' ', '')
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+ cur = cur.replace('</s>', '')
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+ cur = cur.replace('<s>', '')
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+ word_lists.append(cur)
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+
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+ if len(word_lists) == 0:
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+ return False
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+
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+ for ch in word_lists:
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+ if ch.isalpha() is False and ch != "'":
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+ return False
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+ elif ch.isalpha() is True and isChinese(ch) is True:
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+ return False
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+
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+ return True
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+
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+
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+# def abbr_dispose(words: List[Any]) -> List[Any]:
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+def abbr_dispose(words: List[Any], time_stamp: List[List] = None) -> List[Any]:
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+ words_size = len(words)
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+ word_lists = []
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+ abbr_begin = []
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+ abbr_end = []
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+ last_num = -1
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+ ts_lists = []
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+ ts_nums = []
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+ ts_index = 0
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+ for num in range(words_size):
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+ if num <= last_num:
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+ continue
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+
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+ if len(words[num]) == 1 and words[num].encode('utf-8').isalpha():
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+ if num + 1 < words_size and words[
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+ num + 1] == ' ' and num + 2 < words_size and len(
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+ words[num +
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+ 2]) == 1 and words[num +
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+ 2].encode('utf-8').isalpha():
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+ # found the begin of abbr
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+ abbr_begin.append(num)
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+ num += 2
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+ abbr_end.append(num)
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+ # to find the end of abbr
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+ while True:
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+ num += 1
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+ if num < words_size and words[num] == ' ':
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+ num += 1
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+ if num < words_size and len(
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+ words[num]) == 1 and words[num].encode(
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+ 'utf-8').isalpha():
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+ abbr_end.pop()
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+ abbr_end.append(num)
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+ last_num = num
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+ else:
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+ break
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+ else:
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+ break
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+
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+ for num in range(words_size):
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+ if words[num] == ' ':
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+ ts_nums.append(ts_index)
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+ else:
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+ ts_nums.append(ts_index)
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+ ts_index += 1
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+ last_num = -1
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+ for num in range(words_size):
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+ if num <= last_num:
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+ continue
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+
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+ if num in abbr_begin:
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+ if time_stamp is not None:
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+ begin = time_stamp[ts_nums[num]][0]
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+ word_lists.append(words[num].upper())
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+ num += 1
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+ while num < words_size:
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+ if num in abbr_end:
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+ word_lists.append(words[num].upper())
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+ last_num = num
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+ break
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+ else:
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+ if words[num].encode('utf-8').isalpha():
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+ word_lists.append(words[num].upper())
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+ num += 1
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+ if time_stamp is not None:
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+ end = time_stamp[ts_nums[num]][1]
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+ ts_lists.append([begin, end])
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+ else:
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+ word_lists.append(words[num])
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+ if time_stamp is not None and words[num] != ' ':
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+ begin = time_stamp[ts_nums[num]][0]
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+ end = time_stamp[ts_nums[num]][1]
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+ ts_lists.append([begin, end])
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+ begin = end
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+
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+ if time_stamp is not None:
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+ return word_lists, ts_lists
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+ else:
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+ return word_lists
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+
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+
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+def sentence_postprocess(words: List[Any], time_stamp: List[List] = None):
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+ middle_lists = []
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+ word_lists = []
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+ word_item = ''
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+ ts_lists = []
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+
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+ # wash words lists
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+ for i in words:
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+ word = ''
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+ if isinstance(i, str):
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+ word = i
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+ else:
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+ word = i.decode('utf-8')
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+
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+ if word in ['<s>', '</s>', '<unk>']:
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+ continue
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+ else:
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+ middle_lists.append(word)
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+
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+ # all chinese characters
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+ if isAllChinese(middle_lists):
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+ for i, ch in enumerate(middle_lists):
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+ word_lists.append(ch.replace(' ', ''))
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+ if time_stamp is not None:
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+ ts_lists = time_stamp
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+
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+ # all alpha characters
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+ elif isAllAlpha(middle_lists):
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+ ts_flag = True
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+ for i, ch in enumerate(middle_lists):
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+ if ts_flag and time_stamp is not None:
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+ begin = time_stamp[i][0]
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+ end = time_stamp[i][1]
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+ word = ''
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+ if '@@' in ch:
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+ word = ch.replace('@@', '')
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+ word_item += word
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+ if time_stamp is not None:
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+ ts_flag = False
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+ end = time_stamp[i][1]
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+ else:
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+ word_item += ch
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+ word_lists.append(word_item)
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+ word_lists.append(' ')
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+ word_item = ''
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+ if time_stamp is not None:
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+ ts_flag = True
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+ end = time_stamp[i][1]
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+ ts_lists.append([begin, end])
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+ begin = end
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+
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+ # mix characters
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+ else:
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+ alpha_blank = False
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+ ts_flag = True
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+ begin = -1
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+ end = -1
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+ for i, ch in enumerate(middle_lists):
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+ if ts_flag and time_stamp is not None:
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+ begin = time_stamp[i][0]
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+ end = time_stamp[i][1]
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+ word = ''
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+ if isAllChinese(ch):
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+ if alpha_blank is True:
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+ word_lists.pop()
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+ word_lists.append(ch)
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+ alpha_blank = False
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+ if time_stamp is not None:
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+ ts_flag = True
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+ ts_lists.append([begin, end])
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+ begin = end
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+ elif '@@' in ch:
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+ word = ch.replace('@@', '')
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+ word_item += word
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+ alpha_blank = False
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+ if time_stamp is not None:
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+ ts_flag = False
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+ end = time_stamp[i][1]
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+ elif isAllAlpha(ch):
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+ word_item += ch
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+ word_lists.append(word_item)
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+ word_lists.append(' ')
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+ word_item = ''
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+ alpha_blank = True
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+ if time_stamp is not None:
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+ ts_flag = True
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+ end = time_stamp[i][1]
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+ ts_lists.append([begin, end])
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+ begin = end
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+ else:
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+ raise ValueError('invalid character: {}'.format(ch))
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+
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+ if time_stamp is not None:
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+ word_lists, ts_lists = abbr_dispose(word_lists, ts_lists)
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+ real_word_lists = []
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+ for ch in word_lists:
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+ if ch != ' ':
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+ real_word_lists.append(ch)
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+ sentence = ' '.join(real_word_lists).strip()
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+ return sentence, ts_lists, real_word_lists
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+ else:
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+ word_lists = abbr_dispose(word_lists)
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+ real_word_lists = []
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+ for ch in word_lists:
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+ if ch != ' ':
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+ real_word_lists.append(ch)
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+ sentence = ''.join(word_lists).strip()
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+ return sentence, real_word_lists
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