| # |
| # Copyright (c) 2021 Project CHIP Authors |
| # |
| # 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. |
| # |
| """Miscellaneous collection utilities""" |
| |
| import os |
| import re |
| |
| from typing import Optional |
| |
| |
| def simplify_source(source: str, prefixes: Optional[re.Pattern]) -> str: |
| """Simplify a source file path.""" |
| r = source |
| if prefixes: |
| if (m := prefixes.match(source)): |
| r = r[m.end():] |
| if r.startswith(os.path.sep): |
| r = r[len(os.path.sep):] |
| while r.startswith('..'): |
| r = r[2:] |
| if r.startswith(os.path.sep): |
| r = r[len(os.path.sep):] |
| return r |
