- merged setlocale and set_locale. the internal setlocale
function is overridden by a python version which accepts
*either* a string (old behaviour) or a locale tuple.
- renamed a few methods (for consistency):
get_locale => getlocale
get_default_locale => getdefaultlocale
set_to_default => resetlocale (!)
- the _locale implementation module can now implement
an optional _getdefaultlocale function. if that function
isn't available, a POSIX-based approach is used (checking
LANG and other environment variables, as usual).
(patch #100765)
This commit is contained in:
Fredrik Lundh
parent
c70b4483d2
commit
6c86b99dc1
209
Lib/locale.py
209
Lib/locale.py
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@ -11,15 +11,21 @@
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"""
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import string
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import string, sys
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### Load C lib locale APIs or use an emulation
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# Try importing the _locale module.
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#
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# If this fails, fall back on a basic 'C' locale emulation.
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#
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try:
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from _locale import *
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except ImportError:
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# Locale emulation
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CHAR_MAX = 127
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LC_ALL = 6
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LC_COLLATE = 3
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@ -60,7 +66,7 @@ except ImportError:
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"""
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if value is not None and \
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value is not 'C':
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raise Error,'_locale emulation only supports "C" locale'
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raise Error, '_locale emulation only supports "C" locale'
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return 'C'
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def strcoll(a,b):
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@ -118,7 +124,7 @@ def format(f,val,grouping=0):
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elif len(fields)==1:
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return fields[0]
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else:
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raise Error,"Too many decimal points in result string"
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raise Error, "Too many decimal points in result string"
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def str(val):
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"""Convert float to integer, taking the locale into account."""
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@ -135,7 +141,7 @@ def atof(str,func=string.atof):
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dd = localeconv()['decimal_point']
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if dd:
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s=string.split(str,dd)
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str=string.join(s,'.')
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str=string.join(s, '.')
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#finally, parse the string
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return func(str)
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@ -144,17 +150,22 @@ def atoi(str):
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return atof(str,string.atoi)
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def _test():
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setlocale(LC_ALL,"")
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setlocale(LC_ALL, "")
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#do grouping
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s1=format("%d",123456789,1)
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print s1,"is",atoi(s1)
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s1=format("%d", 123456789,1)
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print s1, "is", atoi(s1)
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#standard formatting
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s1=str(3.14)
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print s1,"is",atof(s1)
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print s1, "is", atof(s1)
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### Locale name aliasing engine
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# Author: Marc-Andre Lemburg, mal@lemburg.com
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# Various tweaks by Fredrik Lundh <effbot@telia.com>
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# store away the low-level version of setlocale (it's
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# overridden below)
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_setlocale = setlocale
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def normalize(localename):
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@ -229,7 +240,7 @@ def _parse_localename(localename):
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elif code == 'C':
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return None, None
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else:
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raise ValueError,'unknown locale: %s' % localename
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raise ValueError, 'unknown locale: %s' % localename
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return l
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def _build_localename(localetuple):
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@ -248,14 +259,14 @@ def _build_localename(localetuple):
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else:
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return language + '.' + encoding
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def get_default(envvars=('LANGUAGE', 'LC_ALL', 'LC_CTYPE', 'LANG')):
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def getdefaultlocale(envvars=('LANGUAGE', 'LC_ALL', 'LC_CTYPE', 'LANG')):
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""" Tries to determine the default locale settings and returns
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them as tuple (language code, encoding).
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According to POSIX, a program which has not called
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setlocale(LC_ALL,"") runs using the portable 'C' locale.
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Calling setlocale(LC_ALL,"") lets it use the default locale as
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setlocale(LC_ALL, "") runs using the portable 'C' locale.
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Calling setlocale(LC_ALL, "") lets it use the default locale as
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defined by the LANG variable. Since we don't want to interfere
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with the current locale setting we thus emulate the behaviour
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in the way described above.
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@ -271,6 +282,17 @@ def get_default(envvars=('LANGUAGE', 'LC_ALL', 'LC_CTYPE', 'LANG')):
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be determined.
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"""
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try:
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# check if it's supported by the _locale module
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import _locale
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code, encoding = _locale._getdefaultlocale()
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if sys.platform == "win32" and code and code[:2] == "0x":
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# map windows language identifier to language name
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code = windows_locale.get(int(code, 0))
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return code, encoding
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except (ImportError, NameError):
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pass
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# fall back on POSIX behaviour
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import os
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lookup = os.environ.get
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for variable in envvars:
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@ -281,7 +303,10 @@ def get_default(envvars=('LANGUAGE', 'LC_ALL', 'LC_CTYPE', 'LANG')):
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localename = 'C'
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return _parse_localename(localename)
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def get_locale(category=LC_CTYPE):
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# compatibility
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get_default = getdefaultlocale
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def getlocale(category=LC_CTYPE):
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""" Returns the current setting for the given locale category as
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tuple (language code, encoding).
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@ -294,34 +319,36 @@ def get_locale(category=LC_CTYPE):
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be determined.
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"""
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localename = setlocale(category)
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localename = _setlocale(category)
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if category == LC_ALL and ';' in localename:
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raise TypeError,'category LC_ALL is not supported'
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raise TypeError, 'category LC_ALL is not supported'
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return _parse_localename(localename)
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def set_locale(localetuple, category=LC_ALL):
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def setlocale(category, locale=None):
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""" Set the locale according to the localetuple (language code,
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encoding) as returned by get_locale() and get_default().
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""" Set the locale for the given category. The locale can be
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a string, a locale tuple (language code, encoding), or None.
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The given codes are passed through the locale aliasing engine
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before being given to setlocale() for processing.
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Locale tuples are converted to strings the locale aliasing
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engine. Locale strings are passed directly to the C lib.
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category may be given as one of the LC_* values. It defaults
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to LC_ALL.
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category may be given as one of the LC_* values.
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"""
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setlocale(category, normalize(_build_localename(localetuple)))
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if locale and type(locale) is not type(""):
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# convert to string
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locale = normalize(_build_localename(locale))
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return _setlocale(category, locale)
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def set_to_default(category=LC_ALL):
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def resetlocale(category=LC_ALL):
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""" Sets the locale for category to the default setting.
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The default setting is determined by calling
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get_default(). category defaults to LC_ALL.
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getdefaultlocale(). category defaults to LC_ALL.
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"""
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setlocale(category, _build_localename(get_default()))
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_setlocale(category, _build_localename(getdefaultlocale()))
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### Database
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#
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# locale encoding names (case-sensitive).
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#
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encoding_alias = {
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'437': 'C',
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'c': 'C',
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'iso8859': 'ISO8859-1',
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'8859': 'ISO8859-1',
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'88591': 'ISO8859-1',
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'ascii': 'ISO8859-1',
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'en': 'ISO8859-1',
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'iso88591': 'ISO8859-1',
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'iso_8859-1': 'ISO8859-1',
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'885915': 'ISO8859-15',
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'iso885915': 'ISO8859-15',
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'iso_8859-15': 'ISO8859-15',
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'iso8859-2': 'ISO8859-2',
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'iso88592': 'ISO8859-2',
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'iso_8859-2': 'ISO8859-2',
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'iso88595': 'ISO8859-5',
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'iso88596': 'ISO8859-6',
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'iso88597': 'ISO8859-7',
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'iso88598': 'ISO8859-8',
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'iso88599': 'ISO8859-9',
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'iso-2022-jp': 'JIS7',
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'jis': 'JIS7',
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'jis7': 'JIS7',
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'sjis': 'SJIS',
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'tis620': 'TACTIS',
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'ajec': 'eucJP',
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'eucjp': 'eucJP',
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'ujis': 'eucJP',
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'utf-8': 'utf',
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'utf8': 'utf',
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'utf8@ucs4': 'utf',
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'437': 'C',
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'c': 'C',
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'iso8859': 'ISO8859-1',
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'8859': 'ISO8859-1',
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'88591': 'ISO8859-1',
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'ascii': 'ISO8859-1',
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'en': 'ISO8859-1',
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'iso88591': 'ISO8859-1',
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'iso_8859-1': 'ISO8859-1',
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'885915': 'ISO8859-15',
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'iso885915': 'ISO8859-15',
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'iso_8859-15': 'ISO8859-15',
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'iso8859-2': 'ISO8859-2',
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'iso88592': 'ISO8859-2',
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'iso_8859-2': 'ISO8859-2',
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'iso88595': 'ISO8859-5',
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'iso88596': 'ISO8859-6',
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'iso88597': 'ISO8859-7',
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'iso88598': 'ISO8859-8',
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'iso88599': 'ISO8859-9',
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'iso-2022-jp': 'JIS7',
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'jis': 'JIS7',
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'jis7': 'JIS7',
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'sjis': 'SJIS',
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'tis620': 'TACTIS',
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'ajec': 'eucJP',
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'eucjp': 'eucJP',
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'ujis': 'eucJP',
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'utf-8': 'utf',
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'utf8': 'utf',
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'utf8@ucs4': 'utf',
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}
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#
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'zh_tw.euc': 'zh_TW.eucTW',
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}
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#
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# this maps windows language identifiers (as used on Windows 95 and
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# earlier) to locale strings.
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#
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# NOTE: this mapping is incomplete. If your language is missing, send
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# a note with the missing language identifier and the suggested locale
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# code to Fredrik Lundh <effbot@telia.com>. Thanks /F
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windows_locale = {
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0x0404: "zh_TW", # Chinese (Taiwan)
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0x0804: "zh_CN", # Chinese (PRC)
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0x0406: "da_DK", # Danish
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0x0413: "nl_NL", # Dutch (Netherlands)
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0x0409: "en_US", # English (United States)
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0x0809: "en_UK", # English (United Kingdom)
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0x0c09: "en_AU", # English (Australian)
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0x1009: "en_CA", # English (Canadian)
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0x1409: "en_NZ", # English (New Zealand)
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0x1809: "en_IE", # English (Ireland)
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0x1c09: "en_ZA", # English (South Africa)
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0x040b: "fi_FI", # Finnish
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0x040c: "fr_FR", # French (Standard)
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0x080c: "fr_BE", # French (Belgian)
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0x0c0c: "fr_CA", # French (Canadian)
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0x100c: "fr_CH", # French (Switzerland)
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0x0407: "de_DE", # German (Standard)
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0x0408: "el_GR", # Greek
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0x040d: "iw_IL", # Hebrew
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0x040f: "is_IS", # Icelandic
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0x0410: "it_IT", # Italian (Standard)
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0x0411: "ja_JA", # Japanese
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0x0414: "no_NO", # Norwegian (Bokmal)
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0x0816: "pt_PT", # Portuguese (Standard)
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0x0c0a: "es_ES", # Spanish (Modern Sort)
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0x0441: "sw_KE", # Swahili (Kenya)
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0x041d: "sv_SE", # Swedish
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0x081d: "sv_FI", # Swedish (Finland)
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0x041f: "tr_TR", # Turkish
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}
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def _print_locale():
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""" Test function.
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@ -573,9 +640,9 @@ def _print_locale():
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_init_categories()
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del categories['LC_ALL']
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print 'Locale defaults as determined by get_default():'
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print 'Locale defaults as determined by getdefaultlocale():'
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print '-'*72
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lang, enc = get_default()
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lang, enc = getdefaultlocale()
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print 'Language: ', lang or '(undefined)'
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print 'Encoding: ', enc or '(undefined)'
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print
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@ -583,36 +650,36 @@ def _print_locale():
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print 'Locale settings on startup:'
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print '-'*72
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for name,category in categories.items():
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print name,'...'
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lang, enc = get_locale(category)
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print name, '...'
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lang, enc = getlocale(category)
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print ' Language: ', lang or '(undefined)'
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print ' Encoding: ', enc or '(undefined)'
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print
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set_to_default()
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print
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print 'Locale settings after calling set_to_default():'
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print 'Locale settings after calling resetlocale():'
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print '-'*72
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resetlocale()
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for name,category in categories.items():
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print name,'...'
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lang, enc = get_locale(category)
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print name, '...'
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lang, enc = getlocale(category)
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print ' Language: ', lang or '(undefined)'
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print ' Encoding: ', enc or '(undefined)'
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print
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try:
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setlocale(LC_ALL,"")
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setlocale(LC_ALL, "")
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except:
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print 'NOTE:'
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print 'setlocale(LC_ALL,"") does not support the default locale'
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print 'setlocale(LC_ALL, "") does not support the default locale'
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print 'given in the OS environment variables.'
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else:
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print
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print 'Locale settings after calling setlocale(LC_ALL,""):'
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print 'Locale settings after calling setlocale(LC_ALL, ""):'
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print '-'*72
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for name,category in categories.items():
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print name,'...'
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lang, enc = get_locale(category)
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print name, '...'
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lang, enc = getlocale(category)
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print ' Language: ', lang or '(undefined)'
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print ' Encoding: ', enc or '(undefined)'
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print
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