author | Lennard de Rijk <ljvderijk@gmail.com> |
Fri, 03 Apr 2009 10:36:57 +0000 | |
changeset 2064 | 031406b4789d |
parent 54 | 03e267d67478 |
permissions | -rw-r--r-- |
54
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1 |
from django.utils.translation import ungettext, ugettext as _ |
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2 |
from django.utils.encoding import force_unicode |
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3 |
from django import template |
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4 |
from django.template import defaultfilters |
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5 |
from datetime import date |
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6 |
import re |
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7 |
|
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8 |
register = template.Library() |
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9 |
|
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10 |
def ordinal(value): |
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11 |
""" |
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12 |
Converts an integer to its ordinal as a string. 1 is '1st', 2 is '2nd', |
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13 |
3 is '3rd', etc. Works for any integer. |
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14 |
""" |
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15 |
try: |
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16 |
value = int(value) |
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17 |
except ValueError: |
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18 |
return value |
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19 |
t = (_('th'), _('st'), _('nd'), _('rd'), _('th'), _('th'), _('th'), _('th'), _('th'), _('th')) |
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20 |
if value % 100 in (11, 12, 13): # special case |
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21 |
return u"%d%s" % (value, t[0]) |
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22 |
return u'%d%s' % (value, t[value % 10]) |
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23 |
ordinal.is_safe = True |
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24 |
register.filter(ordinal) |
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25 |
|
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26 |
def intcomma(value): |
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27 |
""" |
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28 |
Converts an integer to a string containing commas every three digits. |
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29 |
For example, 3000 becomes '3,000' and 45000 becomes '45,000'. |
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30 |
""" |
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31 |
orig = force_unicode(value) |
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32 |
new = re.sub("^(-?\d+)(\d{3})", '\g<1>,\g<2>', orig) |
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33 |
if orig == new: |
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34 |
return new |
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35 |
else: |
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36 |
return intcomma(new) |
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37 |
intcomma.is_safe = True |
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38 |
register.filter(intcomma) |
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39 |
|
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40 |
def intword(value): |
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41 |
""" |
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42 |
Converts a large integer to a friendly text representation. Works best for |
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43 |
numbers over 1 million. For example, 1000000 becomes '1.0 million', 1200000 |
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44 |
becomes '1.2 million' and '1200000000' becomes '1.2 billion'. |
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45 |
""" |
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46 |
value = int(value) |
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47 |
if value < 1000000: |
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48 |
return value |
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49 |
if value < 1000000000: |
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50 |
new_value = value / 1000000.0 |
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51 |
return ungettext('%(value).1f million', '%(value).1f million', new_value) % {'value': new_value} |
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52 |
if value < 1000000000000: |
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53 |
new_value = value / 1000000000.0 |
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54 |
return ungettext('%(value).1f billion', '%(value).1f billion', new_value) % {'value': new_value} |
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if value < 1000000000000000: |
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56 |
new_value = value / 1000000000000.0 |
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57 |
return ungettext('%(value).1f trillion', '%(value).1f trillion', new_value) % {'value': new_value} |
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58 |
return value |
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59 |
intword.is_safe = False |
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60 |
register.filter(intword) |
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61 |
|
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62 |
def apnumber(value): |
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63 |
""" |
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64 |
For numbers 1-9, returns the number spelled out. Otherwise, returns the |
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65 |
number. This follows Associated Press style. |
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66 |
""" |
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67 |
try: |
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68 |
value = int(value) |
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69 |
except ValueError: |
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return value |
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71 |
if not 0 < value < 10: |
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72 |
return value |
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73 |
return (_('one'), _('two'), _('three'), _('four'), _('five'), _('six'), _('seven'), _('eight'), _('nine'))[value-1] |
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74 |
apnumber.is_safe = True |
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75 |
register.filter(apnumber) |
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76 |
|
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77 |
def naturalday(value, arg=None): |
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78 |
""" |
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79 |
For date values that are tomorrow, today or yesterday compared to |
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80 |
present day returns representing string. Otherwise, returns a string |
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81 |
formatted according to settings.DATE_FORMAT. |
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82 |
""" |
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83 |
try: |
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84 |
value = date(value.year, value.month, value.day) |
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85 |
except AttributeError: |
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86 |
# Passed value wasn't a date object |
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87 |
return value |
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88 |
except ValueError: |
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89 |
# Date arguments out of range |
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90 |
return value |
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91 |
delta = value - date.today() |
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92 |
if delta.days == 0: |
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93 |
return _(u'today') |
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94 |
elif delta.days == 1: |
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95 |
return _(u'tomorrow') |
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96 |
elif delta.days == -1: |
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97 |
return _(u'yesterday') |
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98 |
return defaultfilters.date(value, arg) |
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99 |
register.filter(naturalday) |