1# Copyright (C) 2021 The Android Open Source Project 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); 4# you may not use this file except in compliance with the License. 5# You may obtain a copy of the License at 6# 7# http://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, 11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12# See the License for the specific language governing permissions and 13# limitations under the License. 14 15import os 16 17 18def repo_root(): 19 """ Finds the repo root by traversing up the hierarchy 20 21 This is for use in scripts that get amalgamated, where _file_ can be either 22 python/perfetto/... or tools/amalgamated_tool. 23 """ 24 path = os.path.dirname(os.path.abspath(__file__)) # amalgamator:nocheck 25 last_dir = '' 26 while path and path != last_dir: 27 if os.path.exists(os.path.join(path, 'perfetto.rc')): 28 return path 29 last_dir = path 30 path = os.path.dirname(path) 31 return None 32 33 34def repo_dir(rel_path): 35 return os.path.join(repo_root() or '', rel_path) 36