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babel.support
~~~~~~~~~~~~~
Several classes and functions that help with integrating and using Babel
in applications.
.. note: the code in this module is not used by Babel itself
:copyright: (c) 2013 by the Babel Team.
:license: BSD, see LICENSE for more details.
N)Locale) format_dateformat_datetime format_timeformat_timedelta)
format_numberformat_decimalformat_currencyformat_percentformat_scientific)PY2 text_typetext_to_nativec @ sn e Zd ZdZdddZd ddZd dd Zd d
d Zd ddZdd Z d ddZ
dd Z d!ddZ dd Z
dS )"FormataC Wrapper class providing the various date and number formatting functions
bound to a specific locale and time-zone.
>>> from babel.util import UTC
>>> from datetime import date
>>> fmt = Format('en_US', UTC)
>>> fmt.date(date(2007, 4, 1))
u'Apr 1, 2007'
>>> fmt.decimal(1.2345)
u'1.234'
Nc C s t j|| _|| _dS )zInitialize the formatter.
:param locale: the locale identifier or `Locale` instance
:param tzinfo: the time-zone info (a `tzinfo` instance or `None`)
N)r parselocaletzinfo)selfr r r /usr/lib/python3.6/support.py__init__' s zFormat.__init__mediumc C s t ||| jdS )zReturn a date formatted according to the given pattern.
>>> from datetime import date
>>> fmt = Format('en_US')
>>> fmt.date(date(2007, 4, 1))
u'Apr 1, 2007'
)r )r r )r dateformatr r r r 0 s z Format.datec C s t ||| j| jdS )a6 Return a date and time formatted according to the given pattern.
>>> from datetime import datetime
>>> from pytz import timezone
>>> fmt = Format('en_US', tzinfo=timezone('US/Eastern'))
>>> fmt.datetime(datetime(2007, 4, 1, 15, 30))
u'Apr 1, 2007, 11:30:00 AM'
)r r )r r r )r datetimer r r r r : s
zFormat.datetimec C s t ||| j| jdS )a Return a time formatted according to the given pattern.
>>> from datetime import datetime
>>> from pytz import timezone
>>> fmt = Format('en_US', tzinfo=timezone('US/Eastern'))
>>> fmt.time(datetime(2007, 4, 1, 15, 30))
u'11:30:00 AM'
)r r )r r r )r timer r r r r F s z Format.timesecond333333?Fc C s t |||||| jdS )zReturn a time delta according to the rules of the given locale.
>>> from datetime import timedelta
>>> fmt = Format('en_US')
>>> fmt.timedelta(timedelta(weeks=11))
u'3 months'
) granularity thresholdr
add_directionr )r r )r Zdeltar r r r r r r timedeltaQ s zFormat.timedeltac C s t || jdS )zReturn an integer number formatted for the locale.
>>> fmt = Format('en_US')
>>> fmt.number(1099)
u'1,099'
)r )r r )r numberr r r r" _ s z
Format.numberc C s t ||| jdS )zReturn a decimal number formatted for the locale.
>>> fmt = Format('en_US')
>>> fmt.decimal(1.2345)
u'1.234'
)r )r r )r r" r r r r decimalh s zFormat.decimalc C s t ||| jdS )zHReturn a number in the given currency formatted for the locale.
)r )r r )r r" currencyr r r r$ q s zFormat.currencyc C s t ||| jdS )zReturn a number formatted as percentage for the locale.
>>> fmt = Format('en_US')
>>> fmt.percent(0.34)
u'34%'
)r )r
r )r r" r r r r percentv s zFormat.percentc C s t || jdS )zLReturn a number formatted using scientific notation for the locale.
)r )r r )r r" r r r
scientific s zFormat.scientific)N)Nr )Nr )Nr )r r r F)N)N)__name__
__module__ __qualname____doc__r r r r r! r" r# r$ r% r& r r r r r s
r c @ s e Zd ZdZdddddgZdd Zed d
Zd d Zd
d Z dd Z
dd Z dd Z dd Z
dd Zdd Zdd Zd d Zd d Zd!d" Zd#d$ Zd%d& Zd'd( Zd)d* Zd+d, Zd-d. Zd/d0 Zd1d2 Zd3d4 Z d5d6 Z d7d8 Z d9d: Z d;d< Z d=d> Z!d?d@ Z"dAdB Z#dCS )D LazyProxya Class for proxy objects that delegate to a specified function to evaluate
the actual object.
>>> def greeting(name='world'):
... return 'Hello, %s!' % name
>>> lazy_greeting = LazyProxy(greeting, name='Joe')
>>> print(lazy_greeting)
Hello, Joe!
>>> u' ' + lazy_greeting
u' Hello, Joe!'
>>> u'(%s)' % lazy_greeting
u'(Hello, Joe!)'
This can be used, for example, to implement lazy translation functions that
delay the actual translation until the string is actually used. The
rationale for such behavior is that the locale of the user may not always
be available. In web applications, you only know the locale when processing
a request.
The proxy implementation attempts to be as complete as possible, so that
the lazy objects should mostly work as expected, for example for sorting:
>>> greetings = [
... LazyProxy(greeting, 'world'),
... LazyProxy(greeting, 'Joe'),
... LazyProxy(greeting, 'universe'),
... ]
>>> greetings.sort()
>>> for greeting in greetings:
... print(greeting)
Hello, Joe!
Hello, universe!
Hello, world!
_func_args_kwargs_value_is_cache_enabledc O sV |j dd}tj| d| tj| d| tj| d| tj| d| tj| dd d S )N enable_cacheTr, r- r. r0 r/ )popobject __setattr__)r funcargskwargsZis_cache_enabledr r r r s zLazyProxy.__init__c C s8 | j d kr2| j| j| j}| js$|S tj| d| | j S )Nr/ )r/ r, r- r. r0 r3 r4 )r valuer r r r8 s
zLazyProxy.valuec C s
|| j kS )N)r8 )r keyr r r __contains__ s zLazyProxy.__contains__c C s
t | jS )N)boolr8 )r r r r __nonzero__ s zLazyProxy.__nonzero__c C s
t | jS )N)dirr8 )r r r r __dir__ s zLazyProxy.__dir__c C s
t | jS )N)iterr8 )r r r r __iter__ s zLazyProxy.__iter__c C s
t | jS )N)lenr8 )r r r r __len__ s zLazyProxy.__len__c C s
t | jS )N)strr8 )r r r r __str__ s zLazyProxy.__str__c C s
t | jS )N)Zunicoder8 )r r r r __unicode__ s zLazyProxy.__unicode__c C s
| j | S )N)r8 )r otherr r r __add__ s zLazyProxy.__add__c C s
|| j S )N)r8 )r rF r r r __radd__ s zLazyProxy.__radd__c C s
| j | S )N)r8 )r rF r r r __mod__ s zLazyProxy.__mod__c C s
|| j S )N)r8 )r rF r r r __rmod__ s zLazyProxy.__rmod__c C s
| j | S )N)r8 )r rF r r r __mul__ s zLazyProxy.__mul__c C s
|| j S )N)r8 )r rF r r r __rmul__ s zLazyProxy.__rmul__c O s | j ||S )N)r8 )r r6 r7 r r r __call__ s zLazyProxy.__call__c C s
| j |k S )N)r8 )r rF r r r __lt__ s zLazyProxy.__lt__c C s
| j |kS )N)r8 )r rF r r r __le__ s zLazyProxy.__le__c C s
| j |kS )N)r8 )r rF r r r __eq__ s zLazyProxy.__eq__c C s
| j |kS )N)r8 )r rF r r r __ne__ s zLazyProxy.__ne__c C s
| j |kS )N)r8 )r rF r r r __gt__ s zLazyProxy.__gt__c C s
| j |kS )N)r8 )r rF r r r __ge__ s zLazyProxy.__ge__c C s t | j| d S )N)delattrr8 )r namer r r __delattr__ s zLazyProxy.__delattr__c C s t | j|S )N)getattrr8 )r rU r r r __getattr__ s zLazyProxy.__getattr__c C s t | j|| d S )N)setattrr8 )r rU r8 r r r r4 s zLazyProxy.__setattr__c C s | j |= d S )N)r8 )r r9 r r r __delitem__ s zLazyProxy.__delitem__c C s
| j | S )N)r8 )r r9 r r r __getitem__ s zLazyProxy.__getitem__c C s || j |< d S )N)r8 )r r9 r8 r r r __setitem__ s zLazyProxy.__setitem__c C s t | jf| jd| ji| jS )Nr1 )r+ r, r- r0 r. )r r r r __copy__
s zLazyProxy.__copy__c C sD ddl m} t|| j|f|| j|d|| j|i|| j|S )Nr )deepcopyr1 )copyr^ r+ r, r- r0 r. )r memor^ r r r __deepcopy__ s
zLazyProxy.__deepcopy__N)$r' r( r) r* __slots__r propertyr8 r: r< r> r@ rB rD rE rG rH rI rJ rK rL rM rN rO rP rQ rR rS rV rX r4 rZ r[ r\ r] ra r r r r r+ s@ " r+ c s e Zd ZdZd) fdd Zdd Zdd Zdd ZeZd
d Z d d
Z
dd Z e Z dZ
dd Zdd Zdd Zdd Zdd Zdd Zd d Zd d ZeZd!d" Zd#d$ Zd%d& ZeZd'd( Ze se j j Z e j j Z! Z"S )*NullTranslationsNc sN i | _ dd | _tt| j|d ttdt|ddg| _| j | _
i | _ dS )a Initialize a simple translations class which is not backed by a
real catalog. Behaves similar to gettext.NullTranslations but also
offers Babel's on *gettext methods (e.g. 'dgettext()').
:param fp: a file-like object (ignored in this class)
c S s t | dkS )N )int)nr r r + s z+NullTranslations.__init__..)fpNrU ) _catalogpluralsuperrd r listfilterrW filesDEFAULT_DOMAINdomain_domains)r ri ) __class__r r r s
zNullTranslations.__init__c C s | j j|| j|S )zULike ``gettext()``, but look the message up in the specified
domain.
)rr getgettext)r rq messager r r dgettext1 s zNullTranslations.dgettextc C s | j j|| j|S )zVLike ``lgettext()``, but look the message up in the specified
domain.
)rr rt Zlgettext)r rq rv r r r ldgettext7 s zNullTranslations.ldgettextc C s | j j|| j|S )zVLike ``ugettext()``, but look the message up in the specified
domain.
)rr rt ugettext)r rq rv r r r udgettext= s zNullTranslations.udgettextc C s | j j|| j|||S )zVLike ``ngettext()``, but look the message up in the specified
domain.
)rr rt ngettext)r rq singularrk numr r r dngettextE s zNullTranslations.dngettextc C s | j j|| j|||S )zWLike ``lngettext()``, but look the message up in the specified
domain.
)rr rt Z lngettext)r rq r| rk r} r r r
ldngettextK s zNullTranslations.ldngettextc C s | j j|| j|||S )zVLike ``ungettext()`` but look the message up in the specified
domain.
)rr rt ungettext)r rq r| rk r} r r r
udngettextQ s zNullTranslations.udngettextz%s%sc C sj | j ||f }t }| jj||}||krB| jr>| jj||S |S | jrTt|| jS | jrft|| jS |S )a Look up the `context` and `message` id in the catalog and return the
corresponding message string, as an 8-bit string encoded with the
catalog's charset encoding, if known. If there is no entry in the
catalog for the `message` id and `context` , and a fallback has been
set, the look up is forwarded to the fallback's ``pgettext()``
method. Otherwise, the `message` id is returned.
) CONTEXT_ENCODINGr3 rj rt _fallbackpgettext_output_charsetr _charset)r contextrv ctxt_msg_idmissingtmsgr r r r ` s zNullTranslations.pgettextc C sb | j ||f }t }| jj||}||krB| jr>| jj||S |S | jrT|j| jS |jtj S )zEquivalent to ``pgettext()``, but the translation is returned in the
preferred system encoding, if no other encoding was explicitly set with
``bind_textdomain_codeset()``.
)
r r3 rj rt r lpgettextr encoder getpreferredencoding)r r rv r r r r r r r v s zNullTranslations.lpgettextc C s | j ||f }y<| j|| j|f }| jr6t|| jS | jrHt|| jS |S tk
r | jrr| jj||||S |dkr~|S |S Y nX dS )a^ Do a plural-forms lookup of a message id. `singular` is used as the
message id for purposes of lookup in the catalog, while `num` is used to
determine which plural form to use. The returned message string is an
8-bit string encoded with the catalog's charset encoding, if known.
If the message id for `context` is not found in the catalog, and a
fallback is specified, the request is forwarded to the fallback's
``npgettext()`` method. Otherwise, when ``num`` is 1 ``singular`` is
returned, and ``plural`` is returned in all other cases.
re N) r rj rk r r r KeyErrorr npgettext)r r r| rk r} r r r r r r s zNullTranslations.npgettextc C s | j ||f }y4| j|| j|f }| jr6|j| jS |jtj S tk
r~ | jrj| jj ||||S |dkrv|S |S Y nX dS )zEquivalent to ``npgettext()``, but the translation is returned in the
preferred system encoding, if no other encoding was explicitly set with
``bind_textdomain_codeset()``.
re N)
r rj rk r r r r r r
lnpgettext)r r r| rk r} r r r r r r s zNullTranslations.lnpgettextc C sJ | j ||f }t }| jj||}||krF| jr>| jj||S t|S |S )as Look up the `context` and `message` id in the catalog and return the
corresponding message string, as a Unicode string. If there is no entry
in the catalog for the `message` id and `context`, and a fallback has
been set, the look up is forwarded to the fallback's ``upgettext()``
method. Otherwise, the `message` id is returned.
)r r3 rj rt r upgettextr
)r r rv ctxt_message_idr r r r r r s zNullTranslations.upgettextc C sr | j ||f }y| j|| j|f }W nF tk
rl | jrN| jj||||S |dkr`t|}nt|}Y nX |S )a$ Do a plural-forms lookup of a message id. `singular` is used as the
message id for purposes of lookup in the catalog, while `num` is used to
determine which plural form to use. The returned message string is a
Unicode string.
If the message id for `context` is not found in the catalog, and a
fallback is specified, the request is forwarded to the fallback's
``unpgettext()`` method. Otherwise, when `num` is 1 `singular` is
returned, and `plural` is returned in all other cases.
re )r rj rk r r
unpgettextr
)r r r| rk r} r r r r r r s
zNullTranslations.unpgettextc C s | j j|| j||S )zVLike `pgettext()`, but look the message up in the specified
`domain`.
)rr rt r )r rq r rv r r r dpgettext s zNullTranslations.dpgettextc C s | j j|| j||S )zWLike `upgettext()`, but look the message up in the specified
`domain`.
)rr rt r )r rq r rv r r r
udpgettext s zNullTranslations.udpgettextc C s | j j|| j||S )zEquivalent to ``dpgettext()``, but the translation is returned in the
preferred system encoding, if no other encoding was explicitly set with
``bind_textdomain_codeset()``.
)rr rt r )r rq r rv r r r
ldpgettext s zNullTranslations.ldpgettextc C s | j j|| j||||S )zWLike ``npgettext``, but look the message up in the specified
`domain`.
)rr rt r )r rq r r| rk r} r r r
dnpgettext s zNullTranslations.dnpgettextc C s | j j|| j||||S )zXLike ``unpgettext``, but look the message up in the specified
`domain`.
)rr rt r )r rq r r| rk r} r r r udnpgettext s z NullTranslations.udnpgettextc C s | j j|| j||||S )zEquivalent to ``dnpgettext()``, but the translation is returned in
the preferred system encoding, if no other encoding was explicitly set
with ``bind_textdomain_codeset()``.
)rr rt r )r rq r r| rk r} r r r ldnpgettext s z NullTranslations.ldnpgettext)N)#r' r( r) rp r rw rx rz Z dugettextr~ r r Z
dungettextr r r r r r r r r Z
dupgettextr r r Z dunpgettextr r ru rd ry r{ r
__classcell__r r )rs r rd s8 rd c sb e Zd ZdZdZd fdd Zes2ejjZ ejj
Z e dddZ
dd Zdd d Zd
d Z ZS ) Translationsz&An extended translation catalog class.ZmessagesNc s" t t| j|d |p| j| _dS )zInitialize the translations catalog.
:param fp: the file-like object the translation should be read from
:param domain: the message domain (default: 'messages')
)ri N)rl r r rp rq )r ri rq )rs r r r s zTranslations.__init__c C sn |dk r*t |ttfs |g}dd |D }|s4| j}tj|||}|sLt S t|d}| ||dS Q R X dS )ap Load translations from the given directory.
:param dirname: the directory containing the ``MO`` files
:param locales: the list of locales in order of preference (items in
this list can be either `Locale` objects or locale
strings)
:param domain: the message domain (default: 'messages')
Nc S s g | ] }t |qS r )rC ).0r r r r
, s z%Translations.load..rb)ri rq )
isinstancerm tuplerp ru findrd open)clsdirnameZlocalesrq filenameri r r r load s
zTranslations.loadc C s dt | j| jjdf S )Nz
<%s: "%s">zproject-id-version)typer' Z_infort )r r r r __repr__5 s
zTranslations.__repr__Tc C sb t |d| j}|r&|| jkr&| j|S | jj|}|rJ|dk rJ|j| n|j| || j|< | S )a! Add the given translations to the catalog.
If the domain of the translations is different than that of the
current catalog, they are added as a catalog that is only accessible
by the various ``d*gettext`` functions.
:param translations: the `Translations` instance with the messages to
add
:param merge: whether translations for message domains that have
already been added should be merged with the existing
translations
rq N)rW rp rq mergerr rt Z add_fallback)r translationsr rq Zexistingr r r add9 s
zTranslations.addc C s6 t |tjr2| jj|j t |tr2| jj|j | S )a0 Merge the given translations into the catalog.
Message translations in the specified catalog override any messages
with the same identifier in the existing catalog.
:param translations: the `Translations` instance with the messages to
merge
)r ru GNUTranslationsrj updater ro extend)r r r r r r S s
zTranslations.merge)NN)NNN)T)r' r( r) r* rp r r ru r ry r{ r classmethodr r r r r r r )rs r r
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r )r* ru r Z
babel.corer Z babel.datesr r r r Z
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