v8/tools/utils.py

# Copyright 2008 the V8 project authors. All rights reserved.
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# modification, are permitted provided that the following conditions are
# met:
#
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#       with the distribution.
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import platform
import re


# Reads a .list file into an array of strings
def ReadLinesFrom(name):
  list = []
  for line in open(name):
    if '#' in line:
      line = line[:line.find('#')]
    line = line.strip()
    if len(line) == 0:
      continue
    list.append(line)
  return list

  
def GuessOS():
  id = platform.system()
  if id == 'Linux':
    return 'linux'
  elif id == 'Darwin':
    return 'macos'
  elif id == 'Windows' or id == 'Microsoft':
    # On Windows Vista platform.system() can return 'Microsoft' with some
    # versions of Python, see http://bugs.python.org/issue1082
    return 'win32'
  else:
    return None


def GuessArchitecture():
  id = platform.machine()
  if id.startswith('arm'):
    return 'arm'
  elif (not id) or (not re.match('(x|i[3-6])86', id) is None):
    return 'ia32'
  else:
    return None


def GuessWordsize():
  if '64' in platform.machine():
    return '64'
  else:
    return '32'


def IsWindows():
  return GuessOS() == 'win32'