src/xwalk/tools/utils.py

   1 #!/usr/bin/env python
   2
   3 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
   4 # Copyright (c) 2013 Intel Corporation. All rights reserved.
   5 # Use of this source code is governed by a BSD-style license that can be
   6 # found in the LICENSE file.
   7
   8 ''' This script provides utils for python scripts in crosswalk.
   9 '''
  10
  11 import os
  12 import sys
  13 import subprocess
  14
  15 def TryAddDepotToolsToPythonPath():
  16   depot_tools = FindDepotToolsInPath()
  17   if depot_tools:
  18     sys.path.append(depot_tools)
  19     python_path = os.environ.get('PYTHONPATH')
  20     if python_path:
  21       os.environ['PYTHONPATH'] = os.path.pathsep.join(
  22           python_path.split(os.path.pathsep)+[depot_tools])
  23     else:
  24       os.environ['PYTHONPATH'] = depot_tools
  25
  26 def FindDepotToolsInPath():
  27   paths = os.getenv('PATH').split(os.path.pathsep)
  28   for path in paths:
  29     if os.path.basename(path) == '':
  30       # path is end with os.path.pathsep
  31       path = os.path.dirname(path)
  32     if os.path.basename(path) == 'depot_tools':
  33       return path
  34   return None
  35
  36 def IsWindows():
  37   return sys.platform == 'cygwin' or sys.platform.startswith('win')
  38
  39 def IsLinux():
  40   return sys.platform.startswith('linux')
  41
  42 def IsMac():
  43   return sys.platform.startswith('darwin')
  44
  45 def GitExe():
  46   if IsWindows():
  47     return 'git.bat'
  48   else:
  49     return 'git'
  50
  51 def GetCommandOutput(command, cwd=None):
  52   proc = subprocess.Popen(command, stdout=subprocess.PIPE,
  53                           stderr=subprocess.STDOUT, bufsize=1,
  54                           cwd=cwd)
  55   output = proc.communicate()[0]
  56   result = proc.returncode
  57   if result:
  58     raise Exception('%s: %s' % (subprocess.list2cmdline(command), output))
  59   return output