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| 1 # Copyright 2010 Google Inc. All Rights Reserved. | |
| 2 | |
| 3 # This file contains a set of utilities functions used | |
| 4 # by both SConstruct and other Python-based scripts. | |
| 5 | |
| 6 import commands | |
| 7 import os | |
| 8 import platform | |
| 9 import re | |
| 10 import subprocess | |
| 11 | |
| 12 class ChangedWorkingDirectory(object): | |
| 13 def __init__(self, new_dir): | |
| 14 self._new_dir = new_dir | |
| 15 | |
| 16 def __enter__(self): | |
| 17 self._old_dir = os.getcwd() | |
| 18 os.chdir(self._new_dir) | |
| 19 return self._new_dir | |
| 20 | |
| 21 def __exit__(self, *_): | |
| 22 os.chdir(self._old_dir) | |
| 23 | |
| 24 # Try to guess the host operating system. | |
| 25 def guessOS(): | |
| 26 id = platform.system() | |
| 27 if id == "Linux": | |
| 28 return "linux" | |
| 29 elif id == "Darwin": | |
| 30 return "mac" | |
| 31 elif id == "Windows" or id == "Microsoft": | |
| 32 # On Windows Vista platform.system() can return "Microsoft" with some | |
| 33 # versions of Python, see http://bugs.python.org/issue1082 for details. | |
| 34 return "win" | |
| 35 else: | |
| 36 return None | |
| 37 | |
| 38 | |
| 39 # Try to guess the host architecture. | |
| 40 def guessArchitecture(): | |
| 41 id = platform.machine() | |
| 42 if id.startswith('arm'): | |
| 43 return 'arm' | |
| 44 elif (not id) or (not re.match('(x|i[3-6])86', id) is None): | |
| 45 return 'x86' | |
| 46 elif id == 'i86pc': | |
| 47 return 'x86' | |
| 48 else: | |
| 49 return None | |
| 50 | |
| 51 | |
| 52 # Try to guess the number of cpus on this machine. | |
| 53 def guessCpus(): | |
| 54 if os.path.exists("/proc/cpuinfo"): | |
| 55 return int(commands.getoutput("grep -E '^processor' /proc/cpuinfo | wc -l")) | |
| 56 if os.path.exists("/usr/bin/hostinfo"): | |
| 57 return int(commands.getoutput('/usr/bin/hostinfo | grep "processors are logi
cally available." | awk "{ print \$1 }"')) | |
| 58 win_cpu_count = os.getenv("NUMBER_OF_PROCESSORS") | |
| 59 if win_cpu_count: | |
| 60 return int(win_cpu_count) | |
| 61 return int(os.getenv("PARFAIT_NUMBER_OF_CORES", 2)) | |
| 62 | |
| 63 | |
| 64 # Returns true if we're running under Windows. | |
| 65 def isWindows(): | |
| 66 return guessOS() == 'win32' | |
| 67 | |
| 68 # Reads a text file into an array of strings - one for each | |
| 69 # line. Strips comments in the process. | |
| 70 def readLinesFrom(name): | |
| 71 result = [] | |
| 72 for line in open(name): | |
| 73 if '#' in line: | |
| 74 line = line[:line.find('#')] | |
| 75 line = line.strip() | |
| 76 if len(line) == 0: | |
| 77 continue | |
| 78 result.append(line) | |
| 79 return result | |
| 80 | |
| 81 def listArgCallback(option, opt_str, value, parser): | |
| 82 if value is None: | |
| 83 value = [] | |
| 84 | |
| 85 for arg in parser.rargs: | |
| 86 if arg[:2].startswith('--'): | |
| 87 break | |
| 88 value.append(arg) | |
| 89 | |
| 90 del parser.rargs[:len(value)] | |
| 91 setattr(parser.values, option.dest, value) | |
| 92 | |
| 93 | |
| 94 def getCommandOutput(cmd): | |
| 95 print cmd | |
| 96 pipe = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE) | |
| 97 output = pipe.communicate() | |
| 98 if pipe.returncode == 0: | |
| 99 return output[0] | |
| 100 else: | |
| 101 print output[1] | |
| 102 raise Exception('Failed to run command. return code=%s' % pipe.returncode) | |
| 103 | |
| 104 def runCommand(cmd, env_update=None): | |
| 105 if env_update is None: | |
| 106 env_update = {} | |
| 107 print 'Running: ' + ' '.join(["%s='%s'" % (k, v) for k, v in env_update.iterit
ems()]) + ' ' + ' '.join(cmd) | |
| 108 env_copy = dict(os.environ.items()) | |
| 109 env_copy.update(env_update) | |
| 110 p = subprocess.Popen(cmd, env=env_copy) | |
| 111 if p.wait() != 0: | |
| 112 raise Exception('Failed to run command. return code=%s' % p.returncode) | |
| 113 | |
| 114 def main(argv): | |
| 115 print "GuessOS() -> ", guessOS() | |
| 116 print "GuessArchitecture() -> ", guessArchitecture() | |
| 117 print "GuessCpus() -> ", guessCpus() | |
| 118 print "IsWindows() -> ", isWindows() | |
| 119 | |
| 120 | |
| 121 if __name__ == "__main__": | |
| 122 import sys | |
| 123 main(sys.argv) | |
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Chromium Code Reviews
Issue 239993009:
Revert accidental dartium code push (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src