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GrampsLocale: Refactor/clean up initialization

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Includes moving encoding to be a class variable.

svn: r21961
This commit is contained in:
John Ralls 2013-04-12 22:26:55 +00:00
parent 25315ceece
commit a422b30fd6
1 changed files with 86 additions and 56 deletions
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142
gramps/gen/utils/grampslocale.py
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@ -144,6 +144,8 @@ class GrampsLocale(object):
subidrectries in the localedir, e.g. "fr" or "zh_CN".
"""
__first_instance = None
encoding = None
def __new__(cls, localedir=None, lang=None, domain=None, languages=None):
if not GrampsLocale.__first_instance:
cls.__first_instance = super(GrampsLocale, cls).__new__(cls)
@ -315,16 +317,21 @@ class GrampsLocale(object):
except WindowsError:
LOG.warning("Localization library libintl not on %PATH%, localization will be incomplete")
def __init_first_instance(self, localedir):
def __init_first_instance(self):
"""
Initialize the primary locale from whatever might be
available. We only do this once, and the resulting
GrampsLocale is returned by default.
"""
global _hdlr
_hdlr = logging.StreamHandler()
_hdlr.setFormatter(logging.Formatter(fmt="%(name)s.%(levelname)s: %(message)s"))
LOG.addHandler(_hdlr)
#First, globally set the locale to what's in the environment:
if not (hasattr(self, 'lang') and self.lang
and hasattr(self, 'language') and self.language):
# Even the first instance can be overridden by passing lang
# and languages to the constructor. If it isn't (which is the
# expected behavior), do platform-specific setup:
if not (self.lang and self.language):
if sys.platform == 'darwin':
from . import maclocale
maclocale.mac_setup_localization(self)
@ -339,15 +346,15 @@ class GrampsLocale(object):
self.lang = 'en_US.UTF-8'
if not self.language:
self.language.append('en')
if not self.have_localedir and not self.lang.startswith('en'):
if not self.localedir and not self.lang.startswith('en'):
LOG.warning("No translations for %s were found, setting localization to U.S. English", self.localedomain)
self.lang = 'en_US.UTF-8'
self.language = ['en']
#Next, we need to know what is the encoding from the native
#environment. This is used by python standard library funcions which
#localize their output, e.g. time.strftime():
if not (hasattr(self, 'encoding') and self.encoding):
#localize their output, e.g. time.strftime(). NB: encoding is a class variable.
if not self.encoding:
self.encoding = (locale.getpreferredencoding()
or sys.getdefaultencoding())
#Ensure that output is encoded correctly to stdout and stderr. This is
@ -366,27 +373,64 @@ class GrampsLocale(object):
'backslashreplace')
#GtkBuilder depends on reading Glade files as UTF-8 and crashes if it
#doesn't, so set $LANG to have a UTF-8 locale. NB: This does *not*
#affect locale.getpreferredencoding() or sys.getfilesystemencoding()
#which are set by python long before we get here.
check_lang = self.lang.split('.')
if len(check_lang) < 2 or check_lang[1] not in ["utf-8", "UTF-8"]:
self.lang = '.'.join((check_lang[0], 'UTF-8'))
if self.lang == 'C.UTF-8':
os.environ["LANG"] = 'C'
else:
os.environ["LANG"] = self.lang
os.environ["LANGUAGE"] = ':'.join(['C' if l.startswith('en') else l for l in self.language])
# Make sure that self.lang and self.language are reflected
# back into the environment for Gtk to use when its
# initialized. If self.lang isn't 'C', make sure that it has a
# 'UTF-8' suffix, because that's all that GtkBuilder can
# digest.
# Linux note: You'll get unsupported locale errors from Gtk
# and untranslated strings if the requisite UTF-8 locale isn't
# installed. This is particularly a problem on Debian and
# Debian-derived distributions which by default don't install
# a lot of locales.
if self.lang != 'C':
check_lang = self.lang.split('.')
if len(check_lang) < 2 or check_lang[1] not in ["utf-8", "UTF-8"]:
self.lang = '.'.join((check_lang[0], 'UTF-8'))
os.environ["LANG"] = self.lang
os.environ["LANGUAGE"] = ':'.join(['C' if l in ('en', 'en_US') else l
for l in self.language])
# GtkBuilder uses GLib's g_dgettext wrapper, which oddly is bound
# with locale instead of gettext. Win32 doesn't support bindtextdomain.
if self.have_localedir:
if self.localedir:
if not sys.platform == 'win32':
locale.bindtextdomain(self.localedomain, self.localedir)
else:
self._win_bindtextdomain(self.localedomain, self.localedir)
def _init_secondary_locale(self):
"""
Init a secondary locale. Secondary locales are used to provide
an alternate localization to the one used for the UI; for
example, some reports offer the option to use a different
language.
"""
if not self.localedir:
LOG.warning("No Localedir provided, unable to find translations")
if not self.localedomain:
if _firstlocaledomain:
self.localedomain = _first.localedomain
else:
self.localedomain = "gramps"
_first = self._GrampsLocale__first_instance
if not self.lang and _first.lang:
self.lang = _first.lang
if not self.language:
if self.lang:
trans = self.check_available_translations(self.lang)
if trans:
self.language = [trans]
if not self.language and _first.language:
self.language = _first.language
self.calendar = self.collation = self.lang
def __init__(self, localedir=None, lang=None, domain=None, languages=None):
"""
@ -395,53 +439,39 @@ class GrampsLocale(object):
otherwise if called without arguments.
"""
global _hdlr
#initialized is special, used only for the "first instance",
#and created by __new__(). It's used to prevent re-__init__ing
#__first_instance when __new__() returns its pointer.
if hasattr(self, 'initialized') and self.initialized:
return
_first = self._GrampsLocale__first_instance
self.have_localedir = True
if domain:
self.localedomain = domain
elif hasattr(_first, 'localedomain'):
self.localedomain = _first.localedomain
else:
self.localedomain = "gramps"
if localedir and os.path.exists(localedir):
# Everything breaks without localedir, so get that set up
# first. Warnings are logged in _init_first_instance or
# _init_secondary_locale if this comes up empty.
if localedir and os.path.exists(os.path.abspath(localedir)):
self.localedir = localedir
elif hasattr(_first, 'localedir'):
elif _first and _first.localedir:
self.localedir = _first.localedir
else:
self.localedir = None
if localedir:
LOG.warning("Localedir %s doesn't exist, unable to set localization", localedir);
else:
LOG.warning("No Localedir provided, unable to set localization")
self.have_localedir = False
if lang:
self.lang = lang
elif hasattr(_first, 'lang'):
self.lang = _first.lang
self.language = []
self.lang = lang
self.localedomain = domain or 'gramps'
if languages:
self.language = [x for x in [self.check_available_translations(l)
for l in languages]
for l in languages.split(":")]
if x]
elif hasattr(self, 'lang') and self.lang:
trans = self.check_available_translations(lang)
if trans:
self.language.append(trans)
if not self.language and hasattr(_first, 'language'):
self.language = _first.language
if self == _first:
self._GrampsLocale__init_first_instance(localedir)
else:
self.calendar = self.collation = self.lang
self.language = None
_first = self._GrampsLocale__first_instance
if self == _first:
self._GrampsLocale__init_first_instance()
else:
self._init_secondary_locale()
self.icu_locales = {}
@ -692,7 +722,7 @@ class GrampsLocale(object):
Test a locale for having a translation available
locale -- string with standard language code, locale code, or name
"""
if not self.have_localedir:
if not self.localedir:
return None
if not hasattr(self, 'languages'):
self.languages = self.get_available_translations()