mirror of
https://git.mirrors.martin98.com/https://github.com/infiniflow/ragflow.git
synced 2025-06-01 04:17:50 +08:00
fc7cc1d36c
### What problem does this PR solve? Optimize docx handle method in laws parser ### Type of change - [x] New Feature (non-breaking change which adds functionality)
239 lines
8.8 KiB
Python
239 lines
8.8 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
#
|
|
import copy
|
|
from tika import parser
|
|
import re
|
|
from io import BytesIO
|
|
from docx import Document
|
|
|
|
from api.db import ParserType
|
|
from rag.nlp import bullets_category, is_english, tokenize, remove_contents_table, hierarchical_merge, \
|
|
make_colon_as_title, add_positions, tokenize_chunks, find_codec, docx_question_level
|
|
from rag.nlp import rag_tokenizer
|
|
from deepdoc.parser import PdfParser, DocxParser, PlainParser, HtmlParser
|
|
from rag.settings import cron_logger
|
|
|
|
|
|
class Docx(DocxParser):
|
|
def __init__(self):
|
|
pass
|
|
|
|
def __clean(self, line):
|
|
line = re.sub(r"\u3000", " ", line).strip()
|
|
return line
|
|
|
|
def old_call(self, filename, binary=None, from_page=0, to_page=100000):
|
|
self.doc = Document(
|
|
filename) if not binary else Document(BytesIO(binary))
|
|
pn = 0
|
|
lines = []
|
|
for p in self.doc.paragraphs:
|
|
if pn > to_page:
|
|
break
|
|
if from_page <= pn < to_page and p.text.strip():
|
|
lines.append(self.__clean(p.text))
|
|
for run in p.runs:
|
|
if 'lastRenderedPageBreak' in run._element.xml:
|
|
pn += 1
|
|
continue
|
|
if 'w:br' in run._element.xml and 'type="page"' in run._element.xml:
|
|
pn += 1
|
|
return [l for l in lines if l]
|
|
|
|
def __call__(self, filename, binary=None, from_page=0, to_page=100000):
|
|
self.doc = Document(
|
|
filename) if not binary else Document(BytesIO(binary))
|
|
pn = 0
|
|
last_question, last_answer, last_level = "", "", -1
|
|
lines = []
|
|
root = DocxNode()
|
|
point = root
|
|
bull = bullets_category([p.text for p in self.doc.paragraphs])
|
|
for p in self.doc.paragraphs:
|
|
if pn > to_page:
|
|
break
|
|
question_level, p_text = 0, ''
|
|
if from_page <= pn < to_page and p.text.strip():
|
|
question_level, p_text = docx_question_level(p, bull)
|
|
if not question_level or question_level > 6: # not a question
|
|
last_answer = f'{last_answer}\n{p_text}'
|
|
else: # is a question
|
|
if last_question:
|
|
while last_level <= point.level:
|
|
point = point.parent
|
|
new_node = DocxNode(last_question, last_answer, last_level, [], point)
|
|
point.childs.append(new_node)
|
|
point = new_node
|
|
last_question, last_answer, last_level = '', '', -1
|
|
last_level = question_level
|
|
last_answer = ''
|
|
last_question = p_text
|
|
|
|
for run in p.runs:
|
|
if 'lastRenderedPageBreak' in run._element.xml:
|
|
pn += 1
|
|
continue
|
|
if 'w:br' in run._element.xml and 'type="page"' in run._element.xml:
|
|
pn += 1
|
|
if last_question:
|
|
while last_level <= point.level:
|
|
point = point.parent
|
|
new_node = DocxNode(last_question, last_answer, last_level, [], point)
|
|
point.childs.append(new_node)
|
|
point = new_node
|
|
last_question, last_answer, last_level = '', '', -1
|
|
traversal_queue = [root]
|
|
while traversal_queue:
|
|
current_node: DocxNode = traversal_queue.pop()
|
|
sum_text = f'{self.__clean(current_node.question)}\n{self.__clean(current_node.answer)}'
|
|
if not current_node.childs and not current_node.answer.strip():
|
|
continue
|
|
for child in current_node.childs:
|
|
sum_text = f'{sum_text}\n{self.__clean(child.question)}'
|
|
traversal_queue.insert(0, child)
|
|
lines.append(self.__clean(sum_text))
|
|
return [l for l in lines if l]
|
|
class DocxNode:
|
|
def __init__(self, question: str = '', answer: str = '', level: int = 0, childs: list = [], parent = None) -> None:
|
|
self.question = question
|
|
self.answer = answer
|
|
self.level = level
|
|
self.childs = childs
|
|
self.parent = parent
|
|
def __str__(self) -> str:
|
|
return f'''
|
|
question:{self.question},
|
|
answer:{self.answer},
|
|
level:{self.level},
|
|
childs:{self.childs}
|
|
'''
|
|
|
|
|
|
class Pdf(PdfParser):
|
|
def __init__(self):
|
|
self.model_speciess = ParserType.LAWS.value
|
|
super().__init__()
|
|
|
|
def __call__(self, filename, binary=None, from_page=0,
|
|
to_page=100000, zoomin=3, callback=None):
|
|
callback(msg="OCR is running...")
|
|
self.__images__(
|
|
filename if not binary else binary,
|
|
zoomin,
|
|
from_page,
|
|
to_page,
|
|
callback
|
|
)
|
|
callback(msg="OCR finished")
|
|
|
|
from timeit import default_timer as timer
|
|
start = timer()
|
|
self._layouts_rec(zoomin)
|
|
callback(0.67, "Layout analysis finished")
|
|
cron_logger.info("layouts:".format(
|
|
(timer() - start) / (self.total_page + 0.1)))
|
|
self._naive_vertical_merge()
|
|
|
|
callback(0.8, "Text extraction finished")
|
|
|
|
return [(b["text"], self._line_tag(b, zoomin))
|
|
for b in self.boxes], None
|
|
|
|
|
|
def chunk(filename, binary=None, from_page=0, to_page=100000,
|
|
lang="Chinese", callback=None, **kwargs):
|
|
"""
|
|
Supported file formats are docx, pdf, txt.
|
|
"""
|
|
doc = {
|
|
"docnm_kwd": filename,
|
|
"title_tks": rag_tokenizer.tokenize(re.sub(r"\.[a-zA-Z]+$", "", filename))
|
|
}
|
|
doc["title_sm_tks"] = rag_tokenizer.fine_grained_tokenize(doc["title_tks"])
|
|
pdf_parser = None
|
|
sections = []
|
|
# is it English
|
|
eng = lang.lower() == "english" # is_english(sections)
|
|
|
|
if re.search(r"\.docx$", filename, re.IGNORECASE):
|
|
callback(0.1, "Start to parse.")
|
|
for txt in Docx()(filename, binary):
|
|
sections.append(txt)
|
|
callback(0.8, "Finish parsing.")
|
|
chunks = sections
|
|
return tokenize_chunks(chunks, doc, eng, pdf_parser)
|
|
|
|
elif re.search(r"\.pdf$", filename, re.IGNORECASE):
|
|
pdf_parser = Pdf() if kwargs.get(
|
|
"parser_config", {}).get(
|
|
"layout_recognize", True) else PlainParser()
|
|
for txt, poss in pdf_parser(filename if not binary else binary,
|
|
from_page=from_page, to_page=to_page, callback=callback)[0]:
|
|
sections.append(txt + poss)
|
|
|
|
elif re.search(r"\.txt$", filename, re.IGNORECASE):
|
|
callback(0.1, "Start to parse.")
|
|
txt = ""
|
|
if binary:
|
|
encoding = find_codec(binary)
|
|
txt = binary.decode(encoding, errors="ignore")
|
|
else:
|
|
with open(filename, "r") as f:
|
|
while True:
|
|
l = f.readline()
|
|
if not l:
|
|
break
|
|
txt += l
|
|
sections = txt.split("\n")
|
|
sections = [l for l in sections if l]
|
|
callback(0.8, "Finish parsing.")
|
|
|
|
elif re.search(r"\.(htm|html)$", filename, re.IGNORECASE):
|
|
callback(0.1, "Start to parse.")
|
|
sections = HtmlParser()(filename, binary)
|
|
sections = [l for l in sections if l]
|
|
callback(0.8, "Finish parsing.")
|
|
|
|
elif re.search(r"\.doc$", filename, re.IGNORECASE):
|
|
callback(0.1, "Start to parse.")
|
|
binary = BytesIO(binary)
|
|
doc_parsed = parser.from_buffer(binary)
|
|
sections = doc_parsed['content'].split('\n')
|
|
sections = [l for l in sections if l]
|
|
callback(0.8, "Finish parsing.")
|
|
|
|
else:
|
|
raise NotImplementedError(
|
|
"file type not supported yet(doc, docx, pdf, txt supported)")
|
|
|
|
|
|
# Remove 'Contents' part
|
|
remove_contents_table(sections, eng)
|
|
|
|
make_colon_as_title(sections)
|
|
bull = bullets_category(sections)
|
|
chunks = hierarchical_merge(bull, sections, 5)
|
|
if not chunks:
|
|
callback(0.99, "No chunk parsed out.")
|
|
|
|
return tokenize_chunks(["\n".join(ck)
|
|
for ck in chunks], doc, eng, pdf_parser)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
import sys
|
|
|
|
def dummy(prog=None, msg=""):
|
|
pass
|
|
chunk(sys.argv[1], callback=dummy)
|