| """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 |
