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Lightly refactored django.utils.dateformat to make it use less code. …

…Also integrated some of Sune's improvements from the #479 patch, including support for backslash escaping. Also vastly improved template docs for the {% now %} tag

git-svn-id: http://code.djangoproject.com/svn/django/trunk@969 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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adrianholovaty committed Oct 20, 2005
1 parent 539e53c commit 4c327b9c864f72be0d99f0b42c3d8e3134f27d4b
Showing with 153 additions and 163 deletions.
  1. +82 −157 django/utils/dateformat.py
  2. +71 −6 docs/templates.txt
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@@ -11,64 +11,62 @@
>>>
"""
from django.utils.dates import MONTHS, MONTHS_AP, WEEKDAYS
from calendar import isleap
from dates import MONTHS, MONTHS_AP, WEEKDAYS
import re
class DateFormat:
year_days = [None, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334]
re_formatchars = re.compile(r'(?<!\\)([aABdDfFgGhHiIjlLmMnNOPrsStTUwWyYzZ])')
re_escaped = re.compile(r'\\(.)')
def __init__(self, d):
self.date = d
class Formatter:
def format(self, formatstr):
pieces = []
for i, piece in enumerate(re_formatchars.split(formatstr)):
if i % 2:
pieces.append(str(getattr(self, piece)()))
elif piece:
pieces.append(re_escaped.sub(r'\1', piece))
return ''.join(pieces)
class TimeFormat(Formatter):
def __init__(self, t):
self.data = t
def a(self):
"'a.m.' or 'p.m.'"
if self.date.hour > 11:
if self.data.hour > 11:
return 'p.m.'
return 'a.m.'
def A(self):
"'AM' or 'PM'"
if self.date.hour > 11:
return 'PM'
return 'AM'
return self.a().upper()
def B(self):
"Swatch Internet time"
raise NotImplementedError
def d(self):
"Day of the month, 2 digits with leading zeros; i.e. '01' to '31'"
return '%02d' % self.date.day
def D(self):
"Day of the week, textual, 3 letters; e.g. 'Fri'"
return WEEKDAYS[self.date.weekday()][0:3]
def f(self):
"""
Time, in 12-hour hours and minutes, with minutes left off if they're zero.
Examples: '1', '1:30', '2:05', '2'
Proprietary extension.
"""
if self.date.minute == 0:
if self.data.minute == 0:
return self.g()
return '%s:%s' % (self.g(), self.i())
def F(self):
"Month, textual, long; e.g. 'January'"
return MONTHS[self.date.month]
def g(self):
"Hour, 12-hour format without leading zeros; i.e. '1' to '12'"
if self.date.hour == 0:
if self.data.hour == 0:
return 12
if self.date.hour > 12:
return self.date.hour - 12
return self.date.hour
if self.data.hour > 12:
return self.data.hour - 12
return self.data.hour
def G(self):
"Hour, 24-hour format without leading zeros; i.e. '0' to '23'"
return self.date.hour
return self.data.hour
def h(self):
"Hour, 12-hour format; i.e. '01' to '12'"
@@ -80,70 +78,88 @@ def H(self):
def i(self):
"Minutes; i.e. '00' to '59'"
return '%02d' % self.date.minute
return '%02d' % self.data.minute
def P(self):
"""
Time, in 12-hour hours, minutes and 'a.m.'/'p.m.', with minutes left off
if they're zero and the strings 'midnight' and 'noon' if appropriate.
Examples: '1 a.m.', '1:30 p.m.', 'midnight', 'noon', '12:30 p.m.'
Proprietary extension.
"""
if self.data.minute == 0 and self.data.hour == 0:
return 'midnight'
if self.data.minute == 0 and self.data.hour == 12:
return 'noon'
return '%s %s' % (self.f(), self.a())
def s(self):
"Seconds; i.e. '00' to '59'"
return '%02d' % self.data.second
class DateFormat(Formatter):
year_days = [None, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334]
def __init__(self, d):
self.data = d
def d(self):
"Day of the month, 2 digits with leading zeros; i.e. '01' to '31'"
return '%02d' % self.data.day
def D(self):
"Day of the week, textual, 3 letters; e.g. 'Fri'"
return WEEKDAYS[self.data.weekday()][0:3]
def F(self):
"Month, textual, long; e.g. 'January'"
return MONTHS[self.data.month]
def I(self):
"'1' if Daylight Savings Time, '0' otherwise."
raise NotImplementedError
def j(self):
"Day of the month without leading zeros; i.e. '1' to '31'"
return self.date.day
return self.data.day
def l(self):
"Day of the week, textual, long; e.g. 'Friday'"
return WEEKDAYS[self.date.weekday()]
return WEEKDAYS[self.data.weekday()]
def L(self):
"Boolean for whether it is a leap year; i.e. True or False"
return isleap(self.date.year)
return isleap(self.data.year)
def m(self):
"Month; i.e. '01' to '12'"
return '%02d' % self.date.month
return '%02d' % self.data.month
def M(self):
"Month, textual, 3 letters; e.g. 'Jan'"
return MONTHS[self.date.month][0:3]
return MONTHS[self.data.month][0:3]
def n(self):
"Month without leading zeros; i.e. '1' to '12'"
return self.date.month
return self.data.month
def N(self):
"Month abbreviation in Associated Press style. Proprietary extension."
return MONTHS_AP[self.date.month]
return MONTHS_AP[self.data.month]
def O(self):
"Difference to Greenwich time in hours; e.g. '+0200'"
raise NotImplementedError
def P(self):
"""
Time, in 12-hour hours, minutes and 'a.m.'/'p.m.', with minutes left off
if they're zero and the strings 'midnight' and 'noon' if appropriate.
Examples: '1 a.m.', '1:30 p.m.', 'midnight', 'noon', '12:30 p.m.'
Proprietary extension.
"""
if self.date.minute == 0 and self.date.hour == 0:
return 'midnight'
if self.date.minute == 0 and self.date.hour == 12:
return 'noon'
return '%s %s' % (self.f(), self.a())
def r(self):
"RFC 822 formatted date; e.g. 'Thu, 21 Dec 2000 16:01:07 +0200'"
raise NotImplementedError
def s(self):
"Seconds; i.e. '00' to '59'"
return '%02d' % self.date.second
def S(self):
"English ordinal suffix for the day of the month, 2 characters; i.e. 'st', 'nd', 'rd' or 'th'"
if self.date.day in (11, 12, 13): # Special case
if self.data.day in (11, 12, 13): # Special case
return 'th'
last = self.date.day % 10
last = self.data.day % 10
if last == 1:
return 'st'
if last == 2:
@@ -166,25 +182,22 @@ def U(self):
def w(self):
"Day of the week, numeric, i.e. '0' (Sunday) to '6' (Saturday)"
weekday = self.date.weekday()
if weekday == 0:
return 6
return weekday - 1
return (self.data.weekday() + 1) % 7
def W(self):
"ISO-8601 week number of year, weeks starting on Monday"
# Algorithm from http://www.personal.ecu.edu/mccartyr/ISOwdALG.txt
week_number = None
jan1_weekday = self.date.replace(month=1, day=1).weekday() + 1
weekday = self.date.weekday() + 1
jan1_weekday = self.data.replace(month=1, day=1).weekday() + 1
weekday = self.data.weekday() + 1
day_of_year = self.z()
if day_of_year <= (8 - jan1_weekday) and jan1_weekday > 4:
if jan1_weekday == 5 or (jan1_weekday == 6 and isleap(self.date.year-1)):
if jan1_weekday == 5 or (jan1_weekday == 6 and isleap(self.data.year-1)):
week_number = 53
else:
week_number = 52
else:
if isleap(self.date.year):
if isleap(self.data.year):
i = 366
else:
i = 365
@@ -197,18 +210,18 @@ def W(self):
week_number -= 1
return week_number
def Y(self):
"Year, 4 digits; e.g. '1999'"
return self.date.year
def y(self):
"Year, 2 digits; e.g. '99'"
return str(self.date.year)[2:]
return str(self.data.year)[2:]
def Y(self):
"Year, 4 digits; e.g. '1999'"
return self.data.year
def z(self):
"Day of the year; i.e. '0' to '365'"
doy = self.year_days[self.date.month] + self.date.day
if self.L() and self.date.month > 2:
doy = self.year_days[self.data.month] + self.data.day
if self.L() and self.data.month > 2:
doy += 1
return doy
@@ -218,94 +231,6 @@ def Z(self):
is always positive."""
raise NotImplementedError
def format(self, formatstr):
result = ''
for char in formatstr:
try:
result += str(getattr(self, char)())
except AttributeError:
result += char
return result
class TimeFormat:
def __init__(self, t):
self.time = t
def a(self):
"'a.m.' or 'p.m.'"
if self.time.hour > 11:
return 'p.m.'
else:
return 'a.m.'
def A(self):
"'AM' or 'PM'"
return self.a().upper()
def B(self):
"Swatch Internet time"
raise NotImplementedError
def f(self):
"""
Time, in 12-hour hours and minutes, with minutes left off if they're zero.
Examples: '1', '1:30', '2:05', '2'
Proprietary extension.
"""
if self.time.minute == 0:
return self.g()
return '%s:%s' % (self.g(), self.i())
def g(self):
"Hour, 12-hour format without leading zeros; i.e. '1' to '12'"
if self.time.hour == 0:
return 12
if self.time.hour > 12:
return self.time.hour - 12
return self.time.hour
def G(self):
"Hour, 24-hour format without leading zeros; i.e. '0' to '23'"
return self.time.hour
def h(self):
"Hour, 12-hour format; i.e. '01' to '12'"
return '%02d' % self.g()
def H(self):
"Hour, 24-hour format; i.e. '00' to '23'"
return '%02d' % self.G()
def i(self):
"Minutes; i.e. '00' to '59'"
return '%02d' % self.time.minute
def P(self):
"""
Time, in 12-hour hours, minutes and 'a.m.'/'p.m.', with minutes left off
if they're zero and the strings 'midnight' and 'noon' if appropriate.
Examples: '1 a.m.', '1:30 p.m.', 'midnight', 'noon', '12:30 p.m.'
Proprietary extension.
"""
if self.time.minute == 0 and self.time.hour == 0:
return 'midnight'
if self.time.minute == 0 and self.time.hour == 12:
return 'noon'
return '%s %s' % (self.f(), self.a())
def s(self):
"Seconds; i.e. '00' to '59'"
return '%02d' % self.time.second
def format(self, formatstr):
result = ''
for char in formatstr:
try:
result += str(getattr(self, char)())
except AttributeError:
result += char
return result
def format(value, format_string):
"Convenience function"
df = DateFormat(value)
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