mirror of
https://github.com/infiniflow/ragflow.git
synced 2026-06-29 23:41:12 +08:00
49 lines
1.5 KiB
Python
49 lines
1.5 KiB
Python
|
#
|
||
|
|
# Copyright 2025 The InfiniFlow Authors. All Rights Reserved.
|
||
|
|
#
|
||
|
|
# 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 __future__ import annotations
|
||
|
|
|
||
|
|
import re
|
||
|
|
import unicodedata
|
||
|
|
|
||
|
|
|
||
|
|
ARABIC_PRESENTATION_FORMS_RE = re.compile(r"[\uFB50-\uFDFF\uFE70-\uFEFF]")
|
||
|
|
|
||
|
|
|
||
|
|
def normalize_arabic_digits(text: str | None) -> str | None:
|
||
|
|
if text is None or not isinstance(text, str):
|
||
|
|
return text
|
||
|
|
|
||
|
|
out = []
|
||
|
|
for ch in text:
|
||
|
|
code = ord(ch)
|
||
|
|
if 0x0660 <= code <= 0x0669:
|
||
|
|
out.append(chr(code - 0x0660 + 0x30))
|
||
|
|
elif 0x06F0 <= code <= 0x06F9:
|
||
|
|
out.append(chr(code - 0x06F0 + 0x30))
|
||
|
|
else:
|
||
|
|
out.append(ch)
|
||
|
|
return "".join(out)
|
||
|
|
|
||
|
|
|
||
|
|
def normalize_arabic_presentation_forms(text: str | None) -> str | None:
|
||
|
|
"""Normalize Arabic presentation forms to canonical text when present."""
|
||
|
|
if text is None or not isinstance(text, str):
|
||
|
|
return text
|
||
|
|
if not ARABIC_PRESENTATION_FORMS_RE.search(text):
|
||
|
|
return text
|
||
|
|
return unicodedata.normalize("NFKC", text)
|