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40 lines
1.6 KiB
Python
40 lines
1.6 KiB
Python
"""A minimal subset of the locale module used at interpreter startup
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(imported by the _io module), in order to reduce startup time.
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Don't import directly from third-party code; use the `locale` module instead!
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"""
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import sys
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import _locale
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if sys.platform.startswith("win"):
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def getpreferredencoding(do_setlocale=True):
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return _locale._getdefaultlocale()[1]
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else:
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try:
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_locale.CODESET
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except AttributeError:
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if hasattr(sys, 'getandroidapilevel'):
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# On Android langinfo.h and CODESET are missing, and UTF-8 is
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# always used in mbstowcs() and wcstombs().
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def getpreferredencoding(do_setlocale=True):
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return 'UTF-8'
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else:
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def getpreferredencoding(do_setlocale=True):
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# This path for legacy systems needs the more complex
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# getdefaultlocale() function, import the full locale module.
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import locale
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return locale.getpreferredencoding(do_setlocale)
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else:
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def getpreferredencoding(do_setlocale=True):
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assert not do_setlocale
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result = _locale.nl_langinfo(_locale.CODESET)
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if not result and sys.platform == 'darwin':
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# nl_langinfo can return an empty string
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# when the setting has an invalid value.
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# Default to UTF-8 in that case because
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# UTF-8 is the default charset on OSX and
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# returning nothing will crash the
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# interpreter.
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result = 'UTF-8'
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return result
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