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0d68a6cd1b
### What problem does this PR solve? Fix errors detected by Ruff ### Type of change - [x] Refactoring
58 lines
1.9 KiB
Python
58 lines
1.9 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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import re
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from deepdoc.parser.utils import get_text
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from rag.nlp import num_tokens_from_string
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class RAGFlowTxtParser:
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def __call__(self, fnm, binary=None, chunk_token_num=128, delimiter="\n!?;。；！？"):
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txt = get_text(fnm, binary)
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return self.parser_txt(txt, chunk_token_num, delimiter)
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@classmethod
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def parser_txt(cls, txt, chunk_token_num=128, delimiter="\n!?;。；！？"):
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if not isinstance(txt, str):
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raise TypeError("txt type should be str!")
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cks = [""]
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tk_nums = [0]
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def add_chunk(t):
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nonlocal cks, tk_nums, delimiter
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tnum = num_tokens_from_string(t)
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if tk_nums[-1] > chunk_token_num:
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cks.append(t)
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tk_nums.append(tnum)
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else:
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cks[-1] += t
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tk_nums[-1] += tnum
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dels = []
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s = 0
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for m in re.finditer(r"`([^`]+)`", delimiter, re.I):
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f, t = m.span()
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dels.append(m.group(1))
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dels.extend(list(delimiter[s: f]))
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s = t
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if s < len(delimiter):
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dels.extend(list(delimiter[s:]))
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dels = [re.escape(d) for d in delimiter if d]
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dels = [d for d in dels if d]
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dels = "|".join(dels)
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secs = re.split(r"(%s)" % dels, txt)
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for sec in secs:
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add_chunk(sec)
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return [[c, ""] for c in cks]
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