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# -*- encoding: utf-8 -*-
from __future__ import unicode_literals
import re
from datetime import date, datetime
from decimal import Decimal
from django import template
from django.conf import settings
from django.template import defaultfilters
from django.utils.encoding import force_text
from django.utils.formats import number_format
from django.utils.safestring import mark_safe
from django.utils.timezone import is_aware, utc
from django.utils.translation import pgettext, ugettext as _, ungettext
register = template.Library()
@register.filter(is_safe=True)
def ordinal(value):
"""
Converts an integer to its ordinal as a string. 1 is '1st', 2 is '2nd',
3 is '3rd', etc. Works for any integer.
"""
try:
value = int(value)
except (TypeError, ValueError):
return value
suffixes = (_('th'), _('st'), _('nd'), _('rd'), _('th'), _('th'), _('th'), _('th'), _('th'), _('th'))
if value % 100 in (11, 12, 13): # special case
return mark_safe("%d%s" % (value, suffixes[0]))
# Mark value safe so i18n does not break with <sup> or <sub> see #19988
return mark_safe("%d%s" % (value, suffixes[value % 10]))
@register.filter(is_safe=True)
def intcomma(value, use_l10n=True):
"""
Converts an integer to a string containing commas every three digits.
For example, 3000 becomes '3,000' and 45000 becomes '45,000'.
"""
if settings.USE_L10N and use_l10n:
try:
if not isinstance(value, (float, Decimal)):
value = int(value)
except (TypeError, ValueError):
return intcomma(value, False)
else:
return number_format(value, force_grouping=True)
orig = force_text(value)
new = re.sub("^(-?\d+)(\d{3})", '\g<1>,\g<2>', orig)
if orig == new:
return new
else:
return intcomma(new, use_l10n)
# A tuple of standard large number to their converters
intword_converters = (
(6, lambda number: (
ungettext('%(value).1f million', '%(value).1f million', number),
ungettext('%(value)s million', '%(value)s million', number),
)),
(9, lambda number: (
ungettext('%(value).1f billion', '%(value).1f billion', number),
ungettext('%(value)s billion', '%(value)s billion', number),
)),
(12, lambda number: (
ungettext('%(value).1f trillion', '%(value).1f trillion', number),
ungettext('%(value)s trillion', '%(value)s trillion', number),
)),
(15, lambda number: (
ungettext('%(value).1f quadrillion', '%(value).1f quadrillion', number),
ungettext('%(value)s quadrillion', '%(value)s quadrillion', number),
)),
(18, lambda number: (
ungettext('%(value).1f quintillion', '%(value).1f quintillion', number),
ungettext('%(value)s quintillion', '%(value)s quintillion', number),
)),
(21, lambda number: (
ungettext('%(value).1f sextillion', '%(value).1f sextillion', number),
ungettext('%(value)s sextillion', '%(value)s sextillion', number),
)),
(24, lambda number: (
ungettext('%(value).1f septillion', '%(value).1f septillion', number),
ungettext('%(value)s septillion', '%(value)s septillion', number),
)),
(27, lambda number: (
ungettext('%(value).1f octillion', '%(value).1f octillion', number),
ungettext('%(value)s octillion', '%(value)s octillion', number),
)),
(30, lambda number: (
ungettext('%(value).1f nonillion', '%(value).1f nonillion', number),
ungettext('%(value)s nonillion', '%(value)s nonillion', number),
)),
(33, lambda number: (
ungettext('%(value).1f decillion', '%(value).1f decillion', number),
ungettext('%(value)s decillion', '%(value)s decillion', number),
)),
(100, lambda number: (
ungettext('%(value).1f googol', '%(value).1f googol', number),
ungettext('%(value)s googol', '%(value)s googol', number),
)),
)
@register.filter(is_safe=False)
def intword(value):
"""
Converts a large integer to a friendly text representation. Works best
for numbers over 1 million. For example, 1000000 becomes '1.0 million',
1200000 becomes '1.2 million' and '1200000000' becomes '1.2 billion'.
"""
try:
value = int(value)
except (TypeError, ValueError):
return value
if value < 1000000:
return value
def _check_for_i18n(value, float_formatted, string_formatted):
"""
Use the i18n enabled defaultfilters.floatformat if possible
"""
if settings.USE_L10N:
value = defaultfilters.floatformat(value, 1)
template = string_formatted
else:
template = float_formatted
return template % {'value': value}
for exponent, converters in intword_converters:
large_number = 10 ** exponent
if value < large_number * 1000:
new_value = value / float(large_number)
return _check_for_i18n(new_value, *converters(new_value))
return value
@register.filter(is_safe=True)
def apnumber(value):
"""
For numbers 1-9, returns the number spelled out. Otherwise, returns the
number. This follows Associated Press style.
"""
try:
value = int(value)
except (TypeError, ValueError):
return value
if not 0 < value < 10:
return value
return (_('one'), _('two'), _('three'), _('four'), _('five'),
_('six'), _('seven'), _('eight'), _('nine'))[value - 1]
# Perform the comparison in the default time zone when USE_TZ = True
# (unless a specific time zone has been applied with the |timezone filter).
@register.filter(expects_localtime=True)
def naturalday(value, arg=None):
"""
For date values that are tomorrow, today or yesterday compared to
present day returns representing string. Otherwise, returns a string
formatted according to settings.DATE_FORMAT.
"""
try:
tzinfo = getattr(value, 'tzinfo', None)
value = date(value.year, value.month, value.day)
except AttributeError:
# Passed value wasn't a date object
return value
except ValueError:
# Date arguments out of range
return value
today = datetime.now(tzinfo).date()
delta = value - today
if delta.days == 0:
return _('today')
elif delta.days == 1:
return _('tomorrow')
elif delta.days == -1:
return _('yesterday')
return defaultfilters.date(value, arg)
# This filter doesn't require expects_localtime=True because it deals properly
# with both naive and aware datetimes. Therefore avoid the cost of conversion.
@register.filter
def naturaltime(value):
"""
For date and time values shows how many seconds, minutes or hours ago
compared to current timestamp returns representing string.
"""
if not isinstance(value, date): # datetime is a subclass of date
return value
now = datetime.now(utc if is_aware(value) else None)
if value < now:
delta = now - value
if delta.days != 0:
return pgettext(
'naturaltime', '%(delta)s ago'
) % {'delta': defaultfilters.timesince(value, now)}
elif delta.seconds == 0:
return _('now')
elif delta.seconds < 60:
return ungettext(
# Translators: please keep a non-breaking space (U+00A0)
# between count and time unit.
'a second ago', '%(count)s seconds ago', delta.seconds
) % {'count': delta.seconds}
elif delta.seconds // 60 < 60:
count = delta.seconds // 60
return ungettext(
# Translators: please keep a non-breaking space (U+00A0)
# between count and time unit.
'a minute ago', '%(count)s minutes ago', count
) % {'count': count}
else:
count = delta.seconds // 60 // 60
return ungettext(
# Translators: please keep a non-breaking space (U+00A0)
# between count and time unit.
'an hour ago', '%(count)s hours ago', count
) % {'count': count}
else:
delta = value - now
if delta.days != 0:
return pgettext(
'naturaltime', '%(delta)s from now'
) % {'delta': defaultfilters.timeuntil(value, now)}
elif delta.seconds == 0:
return _('now')
elif delta.seconds < 60:
return ungettext(
# Translators: please keep a non-breaking space (U+00A0)
# between count and time unit.
'a second from now', '%(count)s seconds from now', delta.seconds
) % {'count': delta.seconds}
elif delta.seconds // 60 < 60:
count = delta.seconds // 60
return ungettext(
# Translators: please keep a non-breaking space (U+00A0)
# between count and time unit.
'a minute from now', '%(count)s minutes from now', count
) % {'count': count}
else:
count = delta.seconds // 60 // 60
return ungettext(
# Translators: please keep a non-breaking space (U+00A0)
# between count and time unit.
'an hour from now', '%(count)s hours from now', count
) % {'count': count}
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