"""A minimal subset of the locale module used at interpreter startup
(imported by the _io module), in order to reduce startup time.

Don't import directly from third-party code; use the `locale` module instead!
"""

import sys
import _locale

if sys.platform.startswith("win"):
 def getpreferredencoding(do_setlocale=True):
 if sys.flags.utf8_mode:
 return 'UTF-8'
 return _locale._getdefaultlocale()[1]
else:
 try:
 _locale.CODESET
 except AttributeError:
 if hasattr(sys, 'getandroidapilevel'):
 # On Android langinfo.h and CODESET are missing, and UTF-8 is
 # always used in mbstowcs() and wcstombs().
 def getpreferredencoding(do_setlocale=True):
 return 'UTF-8'
 else:
 def getpreferredencoding(do_setlocale=True):
 if sys.flags.utf8_mode:
 return 'UTF-8'
 # This path for legacy systems needs the more complex
 # getdefaultlocale() function, import the full locale module.
 import locale
 return locale.getpreferredencoding(do_setlocale)
 else:
 def getpreferredencoding(do_setlocale=True):
 assert not do_setlocale
 if sys.flags.utf8_mode:
 return 'UTF-8'
 result = _locale.nl_langinfo(_locale.CODESET)
 if not result and sys.platform == 'darwin':
 # nl_langinfo can return an empty string
 # when the setting has an invalid value.
 # Default to UTF-8 in that case because
 # UTF-8 is the default charset on OSX and
 # returning nothing will crash the
 # interpreter.
 result = 'UTF-8'
 return result