tools/vim/ninja_output.py

   1 # Copyright 2014 The Chromium Authors. All rights reserved.
   2 # Use of this source code is governed by a BSD-style license that can be
   3 # found in the LICENSE file.
   4
   5
   6 import os
   7 import os.path
   8 import re
   9
  10
  11 def GetNinjaOutputDirectory(chrome_root, configuration=None):
  12   """Returns <chrome_root>/<output_dir>/(Release|Debug).
  13
  14   The output_dir is detected in the following ways, in order of precedence:
  15   1. CHROMIUM_OUT_DIR environment variable.
  16   2. GYP_GENERATOR_FLAGS environment variable output_dir property.
  17   3. Symlink target, if src/out is a symlink.
  18   4. Most recently modified (e.g. built) directory called out or out_*.
  19
  20   The configuration chosen is the one most recently generated/built, but can be
  21   overriden via the <configuration> parameter."""
  22
  23   output_dirs = []
  24   if ('CHROMIUM_OUT_DIR' in os.environ and
  25       os.path.isdir(os.path.join(chrome_root, os.environ['CHROMIUM_OUT_DIR']))):
  26     output_dirs = [os.environ['CHROMIUM_OUT_DIR']]
  27   if not output_dirs:
  28     generator_flags = os.getenv('GYP_GENERATOR_FLAGS', '').split(' ')
  29     for flag in generator_flags:
  30       name_value = flag.split('=', 1)
  31       if (len(name_value) == 2 and name_value[0] == 'output_dir' and
  32           os.path.isdir(os.path.join(chrome_root, name_value[1]))):
  33         output_dirs = [name_value[1]]
  34   if not output_dirs:
  35     out = os.path.join(chrome_root, 'out')
  36     if os.path.islink(out):
  37       out_target = os.path.join(os.path.dirname(out), os.readlink(out))
  38       if os.path.exists(out_target):
  39         output_dirs = [out_target]
  40   if not output_dirs:
  41     for f in os.listdir(chrome_root):
  42       if (re.match('out(?:$|_)', f) and
  43           os.path.isdir(os.path.join(chrome_root, f))):
  44         output_dirs.append(f)
  45
  46   configs = [configuration] if configuration else ['Debug', 'Release']
  47   output_paths = [os.path.join(chrome_root, out_dir, config)
  48                   for out_dir in output_dirs for config in configs]
  49
  50   def approx_directory_mtime(path):
  51     if not os.path.exists(path):
  52       return -1
  53     # This is a heuristic; don't recurse into subdirectories.
  54     paths = [path] + [os.path.join(path, f) for f in os.listdir(path)]
  55     return max(os.path.getmtime(p) for p in paths)
  56
  57   return max(output_paths, key=approx_directory_mtime)