| """Mbed TLS build tree information and manipulation. |
| """ |
| |
| # Copyright The Mbed TLS Contributors |
| # SPDX-License-Identifier: Apache-2.0 |
| # |
| # 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 os |
| |
| def looks_like_mbedtls_root(path: str) -> bool: |
| """Whether the given directory looks like the root of the Mbed TLS source tree.""" |
| return all(os.path.isdir(os.path.join(path, subdir)) |
| for subdir in ['include', 'library', 'programs', 'tests']) |
| |
| def chdir_to_root() -> None: |
| """Detect the root of the Mbed TLS source tree and change to it. |
| |
| The current directory must be up to two levels deep inside an Mbed TLS |
| source tree. |
| """ |
| for d in [os.path.curdir, |
| os.path.pardir, |
| os.path.join(os.path.pardir, os.path.pardir)]: |
| if looks_like_mbedtls_root(d): |
| os.chdir(d) |
| return |
| raise Exception('Mbed TLS source tree not found') |