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# Copyright 2013 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.
import sys
def IsWindows():
return sys.platform in ['win32', 'cygwin']
def IsLinux():
return sys.platform.startswith(('linux', 'freebsd', 'netbsd', 'openbsd'))
def IsMac():
return sys.platform == 'darwin'
def host_os():
"""
Returns a string representing the host_os of the current system.
Possible values: 'win', 'mac', 'linux', 'unknown'.
"""
if IsWindows():
return 'win'
elif IsLinux():
return 'linux'
elif IsMac():
return 'mac'
else:
return 'unknown'
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