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# 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.
#
from rag.nlp import find_codec,num_tokens_from_string
import re
class RAGFlowTxtParser:
def __call__(self, fnm, binary=None, chunk_token_num=128, delimiter="\n!?;。；！？"):
txt = ""
if binary:
encoding = find_codec(binary)
txt = binary.decode(encoding, errors="ignore")
else:
with open(fnm, "r") as f:
while True:
l = f.readline()
if not l:
break
txt += l
return self.parser_txt(txt, chunk_token_num, delimiter)
@classmethod
def parser_txt(cls, txt, chunk_token_num=128, delimiter="\n!?;。；！？"):
if type(txt) != str:
raise TypeError("txt type should be str!")
cks = [""]
tk_nums = [0]
def add_chunk(t):
nonlocal cks, tk_nums, delimiter
tnum = num_tokens_from_string(t)
if tnum < 8:
pos = ""
if tk_nums[-1] > chunk_token_num:
cks.append(t)
tk_nums.append(tnum)
else:
cks[-1] += t
tk_nums[-1] += tnum
s, e = 0, 1
while e < len(txt):
if txt[e] in delimiter:
add_chunk(txt[s: e + 1])
s = e + 1
e = s + 1
else:
e += 1
if s < e:
add_chunk(txt[s: e + 1])
return [[c,""] for c in cks] |