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- # Copyright 2014 The Chromium Authors. All rights reserved.
- # Use of this source code is governed by a BSD-style license that can be
- # found in the LICENSE file.
- from __future__ import print_function
- import sys
- import os
- import itertools
- import re
- try:
- from exceptions import RuntimeError
- except ImportError:
- pass
- def GetNinjaOutputDirectory(chrome_root):
- """Returns <chrome_root>/<output_dir>/(Release|Debug|<other>).
- If either of the following environment variables are set, their
- value is used to determine the output directory:
- 1. CHROMIUM_OUT_DIR environment variable.
- 2. GYP_GENERATOR_FLAGS environment variable output_dir property.
- Otherwise, all directories starting with the word out are examined.
- The configuration chosen is the one most recently generated/built.
- """
- output_dirs = []
- if ('CHROMIUM_OUT_DIR' in os.environ and
- os.path.isdir(os.path.join(chrome_root, os.environ['CHROMIUM_OUT_DIR']))):
- output_dirs = [os.environ['CHROMIUM_OUT_DIR']]
- if not output_dirs:
- generator_flags = os.getenv('GYP_GENERATOR_FLAGS', '').split(' ')
- for flag in generator_flags:
- name_value = flag.split('=', 1)
- if (len(name_value) == 2 and name_value[0] == 'output_dir' and
- os.path.isdir(os.path.join(chrome_root, name_value[1]))):
- output_dirs = [name_value[1]]
- if not output_dirs:
- for f in os.listdir(chrome_root):
- if re.match(r'out(\b|_)', f):
- if os.path.isdir(os.path.join(chrome_root, f)):
- output_dirs.append(f)
- def generate_paths():
- for out_dir in output_dirs:
- out_path = os.path.join(chrome_root, out_dir)
- for config in os.listdir(out_path):
- path = os.path.join(out_path, config)
- if os.path.exists(os.path.join(path, 'build.ninja')):
- yield path
- def approx_directory_mtime(path):
- # This is a heuristic; don't recurse into subdirectories.
- paths = [path] + [os.path.join(path, f) for f in os.listdir(path)]
- return max(filter(None, [safe_mtime(p) for p in paths]))
- def safe_mtime(path):
- try:
- return os.path.getmtime(path)
- except OSError:
- return None
- try:
- return max(generate_paths(), key=approx_directory_mtime)
- except ValueError:
- raise RuntimeError('Unable to find a valid ninja output directory.')
- if __name__ == '__main__':
- if len(sys.argv) != 2:
- raise RuntimeError('Expected a single path argument.')
- print(GetNinjaOutputDirectory(sys.argv[1]))
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