Langchain-Chatchat/document_loaders/customercore.py

62 lines
2.1 KiB
Python
Raw Normal View History

2024-01-17 10:49:59 +08:00
import re
from unstructured.nlp.patterns import (
DOUBLE_PARAGRAPH_PATTERN_RE,
E_BULLET_PATTERN,
PARAGRAPH_PATTERN,
PARAGRAPH_PATTERN_RE,
UNICODE_BULLETS_RE,
)
from unstructured.cleaners.core import group_bullet_paragraph
def custom_group_broken_paragraphs(
text: str,
line_split: re.Pattern = PARAGRAPH_PATTERN_RE,
paragraph_split: re.Pattern = DOUBLE_PARAGRAPH_PATTERN_RE,
) -> str:
"""Groups paragraphs that have line breaks for visual/formatting purposes.
For example:
'''The big red fox
is walking down the lane.
At the end of the lane
the fox met a bear.'''
Gets converted to
'''The big red fox is walking down the lane.
At the end of the land the fox met a bear.'''
"""
paragraphs = paragraph_split.split(text)
clean_paragraphs = []
for paragraph in paragraphs:
if not paragraph.strip():
continue
# NOTE(robinson) - This block is to account for lines like the following that shouldn't be
# grouped together, but aren't separated by a double line break.
# Apache License
# Version 2.0, January 2004
# http://www.apache.org/licenses/
#para_split = line_split.split(paragraph)
# pytesseract converts some bullet points to standalone "e" characters
if UNICODE_BULLETS_RE.match(paragraph.strip()) or E_BULLET_PATTERN.match(paragraph.strip()):
tempList = group_bullet_paragraph(paragraph)
clean_paragraphs.extend(tempList)
#print(f"new 11111:{tempList}")
else:
tempList = re.sub(PARAGRAPH_PATTERN, " ", paragraph)
clean_paragraphs.append(tempList)
#print(f"new 333333:{tempList}")
return "\n\n".join(clean_paragraphs)
# str1 = "手工分段**绝缘装置10 工作斗在额定载荷下起升至最大平台高度制动后15 min, 工作斗下沉量应不超过该工况最大 平台高度的0.3%。"
# str2 = "手工分段**操控系统12 电气系统的要求如下:"
# custom_group_broken_paragraphs(str1)
# custom_group_broken_paragraphs(str2)