/usr/lib/python2.7/dist-packages/zope/i18n/locales/__init__.py is in python-zope.i18n 4.1.0-1.
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#
# Copyright (c) 2002 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
"""Locale and LocaleProvider Implementation.
"""
__docformat__ = 'restructuredtext'
import os
from datetime import datetime, date
from time import strptime
from zope.interface import implementer
from zope.i18n.interfaces.locales import ILocale
from zope.i18n.interfaces.locales import ILocaleDisplayNames, ILocaleDates
from zope.i18n.interfaces.locales import ILocaleVersion, ILocaleIdentity
from zope.i18n.interfaces.locales import ILocaleTimeZone, ILocaleCalendar
from zope.i18n.interfaces.locales import ILocaleCurrency, ILocaleNumbers
from zope.i18n.interfaces.locales import ILocaleFormat, ILocaleFormatLength
from zope.i18n.interfaces.locales import ILocaleOrientation
from zope.i18n.interfaces.locales import ILocaleDayContext, ILocaleMonthContext
from zope.i18n.format import NumberFormat, DateTimeFormat
from zope.i18n.locales.inheritance import \
AttributeInheritance, InheritingDictionary, NoParentException
from zope.i18n.locales.provider import LocaleProvider, LoadLocaleError
from .._compat import _u
# Setup the locale directory
from zope import i18n
LOCALEDIR = os.path.join(os.path.dirname(i18n.__file__), "locales", "data")
# Global LocaleProvider. We really just need this single one.
locales = LocaleProvider(LOCALEDIR)
# Define some constants that can be used
JANUARY = 1
FEBRUARY = 2
MARCH = 3
APRIL = 4
MAY = 5
JUNE = 6
JULY = 7
AUGUST = 8
SEPTEMBER = 9
OCTOBER = 10
NOVEMBER = 11
DECEMBER = 12
MONDAY = 1
TUESDAY = 2
WEDNESDAY = 3
THURSDAY = 4
FRIDAY = 5
SATURDAY = 6
SUNDAY = 7
dayMapping = {'mon': 1, 'tue': 2, 'wed': 3, 'thu': 4,
'fri': 5, 'sat': 6, 'sun': 7}
BC = 1
AD = 2
calendarAliases = {'islamic': ('arabic',),
'islamic-civil': ('civil-arabic',),
'buddhist': ('thai-buddhist', )}
@implementer(ILocaleIdentity)
class LocaleIdentity(object):
"""Represents a unique identification of the locale
This class does not have to deal with inheritance.
Examples::
>>> id = LocaleIdentity('en')
>>> id
<LocaleIdentity (en, None, None, None)>
>>> id = LocaleIdentity('en', 'latin')
>>> id
<LocaleIdentity (en, latin, None, None)>
>>> id = LocaleIdentity('en', 'latin', 'US')
>>> id
<LocaleIdentity (en, latin, US, None)>
>>> id = LocaleIdentity('en', 'latin', 'US', 'POSIX')
>>> id
<LocaleIdentity (en, latin, US, POSIX)>
>>> id = LocaleIdentity('en', None, 'US', 'POSIX')
>>> id
<LocaleIdentity (en, None, US, POSIX)>
"""
def __init__(self, language=None, script=None, territory=None, variant=None):
"""Initialize object."""
self.language = language
self.script = script
self.territory = territory
self.variant = variant
def __repr__(self):
"""See zope.i18n.interfaces.ILocaleIdentity
"""
return "<LocaleIdentity (%s, %s, %s, %s)>" %(
self.language, self.script, self.territory, self.variant)
@implementer(ILocaleVersion)
class LocaleVersion(object):
"""Represents a particular version of a locale
This class does not have to deal with inheritance.
Examples::
>>> (LocaleVersion('1.0', datetime(2004, 1, 1), 'no notes') ==
... LocaleVersion('1.0', datetime(2004, 1, 1), 'no notes again'))
True
>>> (LocaleVersion('1.0', datetime(2004, 1, 1), 'no notes') <
... LocaleVersion('1.0', datetime(2004, 1, 2), 'no notes again'))
True
>>> (LocaleVersion('1.0', datetime(2004, 1, 1), 'no notes') <
... LocaleVersion('0.9', datetime(2004, 1, 2), 'no notes again'))
True
>>> (LocaleVersion('1.0', datetime(2004, 1, 1), 'no notes') >
... LocaleVersion('0.9', datetime(2004, 1, 1), 'no notes again'))
True
"""
def __init__(self, number, generationDate, notes):
"""Initialize object."""
self.number = number
assert(isinstance(generationDate, (date, type(None))))
self.generationDate = generationDate
self.notes = notes
def __lt__(self, other):
return ((self.generationDate, self.number) <
(other.generationDate, other.number))
def __eq__(self, other):
return ((self.generationDate, self.number) ==
(other.generationDate, other.number))
@implementer(ILocaleDisplayNames)
class LocaleDisplayNames(AttributeInheritance):
"""Locale display names with inheritable data.
Examples::
>>> from zope.i18n.locales.tests.test_docstrings import \\
... LocaleInheritanceStub
>>> root = LocaleInheritanceStub()
>>> root.displayNames = LocaleDisplayNames()
>>> root.displayNames.languages = ['en', 'de']
>>> root.displayNames.keys = ['foo', 'bar']
>>> locale = LocaleInheritanceStub(nextLocale=root)
>>> locale.displayNames = LocaleDisplayNames()
>>> locale.displayNames.keys = ['fu', 'bahr']
Here you can see the inheritance in action::
>>> locale.displayNames.languages
['en', 'de']
>>> locale.displayNames.keys
['fu', 'bahr']
"""
@implementer(ILocaleTimeZone)
class LocaleTimeZone(object):
"""Specifies one of the timezones of a specific locale.
The attributes of this class are not inherited, since all timezone
information is always provided together.
Example::
>>> tz = LocaleTimeZone('Europe/Berlin')
>>> tz.cities = ['Berlin']
>>> tz.names = {'standard': ('Mitteleuropaeische Zeit', 'MEZ'),
... 'daylight': ('Mitteleuropaeische Sommerzeit', 'MESZ')}
>>> tz.type
'Europe/Berlin'
>>> tz.cities
['Berlin']
"""
def __init__(self, type):
"""Initialize the object."""
self.type = type
self.cities = []
self.names = {}
@implementer(ILocaleFormat)
class LocaleFormat(object):
"""Specifies one of the format of a specific format length.
The attributes of this class are not inherited, since all format
information is always provided together. Note that this information by
itself is often not useful, since other calendar data is required to use
the specified pattern for formatting and parsing.
"""
def __init__(self, type=None):
"""Initialize the object."""
self.type = type
self.displayName = _u("")
self.pattern = _u("")
@implementer(ILocaleFormatLength)
class LocaleFormatLength(AttributeInheritance):
"""Specifies one of the format lengths of a specific quantity, like
numbers, dates, times and datetimes."""
def __init__(self, type=None):
"""Initialize the object."""
self.type = type
self.default = None
@implementer(ILocaleMonthContext)
class LocaleMonthContext(AttributeInheritance):
def __init__(self, type=None):
"""Initialize the object."""
self.type = type
self.default = _u("wide")
@implementer(ILocaleDayContext)
class LocaleDayContext(AttributeInheritance):
def __init__(self, type=None):
"""Initialize the object."""
self.type = type
self.default = _u("wide")
@implementer(ILocaleCalendar)
class LocaleCalendar(AttributeInheritance):
"""Represents locale data for a calendar, like 'gregorian'.
This object is particular tricky, since the calendar not only inherits
from higher-up locales, but also from the specified gregorian calendar
available for this locale. This was done, since most other calendars have
different year and era data, but everything else remains the same.
Example:
Even though the 'Locale' object has no 'calendar' attribute for real, it
helps us here to make the example simpler.
>>> from zope.i18n.locales.tests.test_docstrings import \\
... LocaleInheritanceStub
>>> root = LocaleInheritanceStub()
>>> root.calendar = LocaleCalendar('gregorian')
>>> locale = LocaleInheritanceStub(nextLocale=root)
>>> locale.calendar = LocaleCalendar('gregorian')
>>> root.calendar.months = InheritingDictionary(
... {1: (_u("January"), _u("Jan")), 2: (_u("February"), _u("Feb"))})
>>> locale.calendar.months = InheritingDictionary(
... {2: (_u("Februar"), _u("Feb")), 3: (_u("Maerz"), _u("Mrz"))})
>>> locale.calendar.getMonthNames()[:4]
[u'January', u'Februar', u'Maerz', None]
>>> locale.calendar.getMonthTypeFromName(_u("January"))
1
>>> locale.calendar.getMonthTypeFromName(_u("Februar"))
2
>>> locale.calendar.getMonthAbbreviations()[:4]
[u'Jan', u'Feb', u'Mrz', None]
>>> locale.calendar.getMonthTypeFromAbbreviation(_u("Jan"))
1
>>> locale.calendar.getMonthTypeFromAbbreviation(_u("Mrz"))
3
>>> root.calendar.days = InheritingDictionary(
... {1: (_u("Monday"), _u("Mon")), 2: (_u("Tuesday"), _u("Tue"))})
>>> locale.calendar.days = InheritingDictionary(
... {2: (_u("Dienstag"), _u("Die")), 3: (_u("Mittwoch"), _u("Mit"))})
>>> locale.calendar.getDayNames()[:4]
[u'Monday', u'Dienstag', u'Mittwoch', None]
>>> locale.calendar.getDayTypeFromName(_u("Monday"))
1
>>> locale.calendar.getDayTypeFromName(_u("Dienstag"))
2
>>> locale.calendar.getDayAbbreviations()[:4]
[u'Mon', u'Die', u'Mit', None]
>>> locale.calendar.getDayTypeFromAbbreviation(_u("Mon"))
1
>>> locale.calendar.getDayTypeFromAbbreviation(_u("Die"))
2
Let's test the direct attribute access as well.
>>> root.am = _u("AM")
>>> root.pm = _u("PM")
>>> locale.pm = _u("nachm.")
>>> locale.pm
u'nachm.'
>>> locale.am
u'AM'
"""
def __init__(self, type):
"""Initialize the object."""
self.type = type
def getMonthNames(self):
"""See zope.i18n.interfaces.ILocaleCalendar"""
return [self.months.get(type, (None, None))[0] for type in range(1, 13)]
def getMonthTypeFromName(self, name):
"""See zope.i18n.interfaces.ILocaleCalendar"""
for item in self.months.items():
if item[1][0] == name:
return item[0]
def getMonthAbbreviations(self):
"""See zope.i18n.interfaces.ILocaleCalendar"""
return [self.months.get(type, (None, None))[1] for type in range(1, 13)]
def getMonthTypeFromAbbreviation(self, abbr):
"""See zope.i18n.interfaces.ILocaleCalendar"""
for item in self.months.items():
if item[1][1] == abbr:
return item[0]
def getDayNames(self):
"""See zope.i18n.interfaces.ILocaleCalendar"""
return [self.days.get(type, (None, None))[0] for type in range(1, 8)]
def getDayTypeFromName(self, name):
"""See zope.i18n.interfaces.ILocaleCalendar"""
for item in self.days.items():
if item[1][0] == name:
return item[0]
def getDayAbbreviations(self):
"""See zope.i18n.interfaces.ILocaleCalendar"""
return [self.days.get(type, (None, None))[1] for type in range(1, 8)]
def getDayTypeFromAbbreviation(self, abbr):
"""See zope.i18n.interfaces.ILocaleCalendar"""
for item in self.days.items():
if item[1][1] == abbr:
return item[0]
def isWeekend(self, datetime):
"""See zope.i18n.interfaces.ILocaleCalendar"""
day = datetime.weekday()
time = datetime.time()
# TODO: Implement this method
return False
def getFirstWeekDayName(self):
"""See zope.i18n.interfaces.ILocaleCalendar"""
return self.days[dayMapping[self.week['firstDay']]][0]
@implementer(ILocaleDates)
class LocaleDates(AttributeInheritance):
"""Simple ILocaleDates implementation that can inherit data from other
locales.
Examples::
>>> from zope.i18n.tests.test_formats import LocaleCalendarStub as Stub
>>> from datetime import datetime, date, time
>>> dates = LocaleDates()
>>> cal = LocaleCalendar('gregorian')
>>> cal.months = Stub.months
>>> cal.days = Stub.days
>>> cal.am = Stub.am
>>> cal.pm = Stub.pm
>>> cal.eras = Stub.eras
>>> cal.week = {'firstDay': 1, 'minDays': 1}
>>> dates.calendars = {'gregorian': cal}
Setting up and accessing date format through a specific length
(very common scenario)::
>>> fulllength = LocaleFormatLength()
>>> format = LocaleFormat()
>>> format.pattern = _u("EEEE, d. MMMM yyyy")
>>> fulllength.formats = {None: format}
>>> mediumlength = LocaleFormatLength()
>>> format = LocaleFormat()
>>> format.pattern = _u("dd.MM.yyyy")
>>> mediumlength.formats = {None: format}
>>> cal.dateFormats = {'full': fulllength, 'medium': mediumlength}
>>> cal.defaultDateFormat = 'medium'
>>> formatter = dates.getFormatter('date')
>>> formatter.format(date(2004, 2, 4))
u'04.02.2004'
>>> formatter = dates.getFormatter('date', length='full')
>>> formatter.format(date(2004, 2, 4))
u'Mittwoch, 4. Februar 2004'
Let's also test the time formatter::
>>> fulllength = LocaleFormatLength()
>>> format = LocaleFormat()
>>> format.pattern = _u("H:mm' Uhr 'z")
>>> fulllength.formats = {None: format}
>>> mediumlength = LocaleFormatLength()
>>> format = LocaleFormat()
>>> format.pattern = _u("HH:mm:ss")
>>> mediumlength.formats = {None: format}
>>> cal.timeFormats = {'full': fulllength, 'medium': mediumlength}
>>> cal.defaultTimeFormat = 'medium'
>>> formatter = dates.getFormatter('time')
>>> formatter.format(time(12, 15, 00))
u'12:15:00'
>>> formatter = dates.getFormatter('time', length='full')
>>> formatter.format(time(12, 15, 00))
u'12:15 Uhr +000'
The datetime formatter is a bit special, since it is constructed from
the other two::
>>> length = LocaleFormatLength()
>>> format = LocaleFormat()
>>> format.pattern = _u("{1} {0}")
>>> length.formats = {None: format}
>>> cal.dateTimeFormats = {None: length}
>>> formatter = dates.getFormatter('dateTime')
>>> formatter.format(datetime(2004, 2, 4, 12, 15, 00))
u'04.02.2004 12:15:00'
>>> formatter = dates.getFormatter('dateTime', length='full')
>>> formatter.format(datetime(2004, 2, 4, 12, 15, 00))
u'Mittwoch, 4. Februar 2004 12:15 Uhr +000'
Finally, we'll test some invalid input::
>>> dates.getFormatter('timeDate')
Traceback (most recent call last):
ValueError: Invalid category: timeDate
>>> dates.getFormatter('date', length='superlong')
Traceback (most recent call last):
ValueError: Invalid format length: superlong
>>> dates.getFormatter('date', calendar='irish-catholic')
Traceback (most recent call last):
ValueError: Invalid calendar: irish-catholic
"""
def getFormatter(self, category, length=None, name=None,
calendar=_u("gregorian")):
"""See zope.i18n.interfaces.locales.ILocaleDates"""
if category not in (_u("date"), _u("time"), _u("dateTime")):
raise ValueError('Invalid category: %s' % category)
if calendar not in (_u("gregorian"), _u("arabic"), _u("chinese"),
_u("civil-arabic"), _u("hebrew"), _u("japanese"),
_u("thai-buddhist")):
raise ValueError('Invalid calendar: %s' % calendar)
if length not in (_u("short"), _u("medium"), _u("long"), _u("full"), None):
raise ValueError('Invalid format length: %s' % length)
cal = self.calendars[calendar]
formats = getattr(cal, category+'Formats')
if length is None:
length = getattr(
cal,
'default'+category[0].upper()+category[1:]+'Format',
list(formats.keys())[0])
# 'datetime' is always a bit special; we often do not have a length
# specification, but we need it for looking up the date and time
# formatters
if category == 'dateTime':
formatLength = formats.get(length, formats[None])
else:
formatLength = formats[length]
if name is None:
name = formatLength.default
format = formatLength.formats[name]
pattern = format.pattern
if category == 'dateTime':
date_pat = self.getFormatter(
'date', length, name, calendar).getPattern()
time_pat = self.getFormatter(
'time', length, name, calendar).getPattern()
pattern = pattern.replace('{1}', date_pat)
pattern = pattern.replace('{0}', time_pat)
return DateTimeFormat(pattern, cal)
@implementer(ILocaleCurrency)
class LocaleCurrency(object):
"""Simple implementation of ILocaleCurrency without inheritance support,
since it is not needed for a single currency."""
def __init__(self, type):
"""Initialize object."""
self.type = type
self.symbol = None
self.symbolChoice = False
self.displayName = None
@implementer(ILocaleNumbers)
class LocaleNumbers(AttributeInheritance):
"""Implementation of ILocaleCurrency including inheritance support.
Examples::
>>> numbers = LocaleNumbers()
>>> numbers.symbols = {
... 'decimal': ',', 'group': '.', 'list': ';', 'percentSign': '%',
... 'nativeZeroDigit': '0', 'patternDigit': '#', 'plusSign': '+',
... 'minusSign': '-', 'exponential': 'E', 'perMille': 'o/oo',
... 'infinity': 'oo', 'nan': 'N/A'}
Setting up and accessing totally unnamed decimal format
(very common scenario)::
>>> length = LocaleFormatLength()
>>> format = LocaleFormat()
>>> format.pattern = _u("#,##0.###;-#,##0.###")
>>> length.formats = {None: format}
>>> numbers.decimalFormats = {None: length}
>>> formatter = numbers.getFormatter('decimal')
>>> formatter.format(3.4)
u'3,4'
>>> formatter.format(-3.4567)
u'-3,457'
>>> formatter.format(3210.4)
u'3.210,4'
Setting up and accessing scientific formats with named format lengths::
>>> longlength = LocaleFormatLength('long')
>>> format = LocaleFormat()
>>> format.pattern = _u("0.000###E+00")
>>> longlength.formats = {None: format}
>>> mediumlength = LocaleFormatLength('long')
>>> format = LocaleFormat()
>>> format.pattern = _u("0.00##E+00")
>>> mediumlength.formats = {None: format}
>>> numbers.scientificFormats = {'long': longlength,
... 'medium': mediumlength}
>>> numbers.defaultScientificFormat = 'long'
>>> formatter = numbers.getFormatter('scientific')
>>> formatter.format(1234.5678)
u'1,234568E+03'
>>> formatter = numbers.getFormatter('scientific', 'medium')
>>> formatter.format(1234.5678)
u'1,2346E+03'
Setting up and accessing percent formats with named format lengths
and format names::
>>> longlength = LocaleFormatLength('long')
>>> fooformat = LocaleFormat()
>>> fooformat.pattern = _u("0.##0%")
>>> barformat = LocaleFormat()
>>> barformat.pattern = _u("0%")
>>> longlength.formats = {None: fooformat, 'bar': barformat}
>>> numbers.percentFormats = {'long': longlength}
>>> numbers.defaultPercentFormat = 'long'
>>> formatter = numbers.getFormatter('percent')
>>> formatter.format(123.45678)
u'123,457%'
>>> formatter = numbers.getFormatter('percent', name='bar')
>>> formatter.format(123.45678)
u'123%'
...using a default name::
>>> numbers.percentFormats['long'].default = 'bar'
>>> formatter = numbers.getFormatter('percent')
>>> formatter.format(123.45678)
u'123%'
"""
def getFormatter(self, category, length=None, name=None):
"""See zope.i18n.interfaces.locales.ILocaleNumbers"""
assert category in (_u("decimal"), _u("percent"), _u("scientific"), _u("currency"))
assert length in (_u("short"), _u("medium"), _u("long"), _u("full"), None)
formats = getattr(self, category+'Formats')
if length is None:
length = getattr(
self,
'default'+category[0].upper()+category[1:]+'Format',
list(formats.keys())[0])
formatLength = formats[length]
if name is None:
name = formatLength.default
format = formatLength.formats[name]
return NumberFormat(format.pattern, self.symbols)
@implementer(ILocaleOrientation)
class LocaleOrientation(AttributeInheritance):
"""Implementation of ILocaleOrientation
"""
@implementer(ILocale)
class Locale(AttributeInheritance):
"""Implementation of the ILocale interface."""
def __init__(self, id):
self.id = id
def getLocaleID(self):
"""Return the locale id."""
id = self.id
pieces = filter(None,
(id.language, id.script, id.territory, id.variant))
id_string = '_'.join(pieces)
# TODO: What about keys??? Where do I get this info from?
pieces = [key+'='+type for key, type in ()]
if pieces:
id_string += '@' + ','.join(pieces)
return id_string
def getInheritedSelf(self):
"""See zope.i18n.interfaces.locales.ILocaleInheritance
This is the really interesting method that looks up the next (more
general) Locale object. This is used in case this locale object does
not have the required information.
This method works closely with with LocaleProvider.
"""
language = self.id.language
territory = self.id.territory
variant = self.id.variant
if variant is not None:
return locales.getLocale(language, territory, None)
elif territory is not None:
return locales.getLocale(language, None, None)
elif language is not None:
return locales.getLocale(None, None, None)
else:
# Well, this is bad; we are already at the root locale
raise NoParentException('Cannot find a more general locale.')
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