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269 lines
8.2 KiB
269 lines
8.2 KiB
""" |
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PHP date() style date formatting |
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See http://www.php.net/date for format strings |
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Usage: |
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>>> import datetime |
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>>> d = datetime.datetime.now() |
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>>> df = DateFormat(d) |
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>>> print df.format('jS F Y H:i') |
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7th October 2003 11:39 |
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>>> |
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""" |
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from django.utils.dates import MONTHS, MONTHS_3, MONTHS_AP, WEEKDAYS, WEEKDAYS_ABBR |
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from django.utils.tzinfo import LocalTimezone |
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from django.utils.translation import ugettext as _ |
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from django.utils.encoding import force_unicode |
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from calendar import isleap, monthrange |
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import re, time |
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re_formatchars = re.compile(r'(?<!\\)([aAbBdDfFgGhHiIjlLmMnNOPrsStTUwWyYzZ])') |
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re_escaped = re.compile(r'\\(.)') |
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|
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class Formatter(object): |
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def format(self, formatstr): |
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pieces = [] |
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for i, piece in enumerate(re_formatchars.split(force_unicode(formatstr))): |
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if i % 2: |
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pieces.append(force_unicode(getattr(self, piece)())) |
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elif piece: |
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pieces.append(re_escaped.sub(r'\1', piece)) |
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return u''.join(pieces) |
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|
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class TimeFormat(Formatter): |
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def __init__(self, t): |
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self.data = t |
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def a(self): |
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"'a.m.' or 'p.m.'" |
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if self.data.hour > 11: |
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return _('p.m.') |
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return _('a.m.') |
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def A(self): |
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"'AM' or 'PM'" |
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if self.data.hour > 11: |
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return _('PM') |
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return _('AM') |
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def B(self): |
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"Swatch Internet time" |
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raise NotImplementedError |
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def f(self): |
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""" |
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Time, in 12-hour hours and minutes, with minutes left off if they're |
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zero. |
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Examples: '1', '1:30', '2:05', '2' |
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Proprietary extension. |
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""" |
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if self.data.minute == 0: |
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return self.g() |
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return u'%s:%s' % (self.g(), self.i()) |
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def g(self): |
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"Hour, 12-hour format without leading zeros; i.e. '1' to '12'" |
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if self.data.hour == 0: |
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return 12 |
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if self.data.hour > 12: |
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return self.data.hour - 12 |
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return self.data.hour |
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def G(self): |
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"Hour, 24-hour format without leading zeros; i.e. '0' to '23'" |
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return self.data.hour |
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def h(self): |
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"Hour, 12-hour format; i.e. '01' to '12'" |
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return u'%02d' % self.g() |
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def H(self): |
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"Hour, 24-hour format; i.e. '00' to '23'" |
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return u'%02d' % self.G() |
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def i(self): |
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"Minutes; i.e. '00' to '59'" |
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return u'%02d' % self.data.minute |
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def P(self): |
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""" |
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Time, in 12-hour hours, minutes and 'a.m.'/'p.m.', with minutes left off |
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if they're zero and the strings 'midnight' and 'noon' if appropriate. |
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Examples: '1 a.m.', '1:30 p.m.', 'midnight', 'noon', '12:30 p.m.' |
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Proprietary extension. |
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""" |
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if self.data.minute == 0 and self.data.hour == 0: |
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return _('midnight') |
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if self.data.minute == 0 and self.data.hour == 12: |
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return _('noon') |
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return u'%s %s' % (self.f(), self.a()) |
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def s(self): |
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"Seconds; i.e. '00' to '59'" |
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return u'%02d' % self.data.second |
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class DateFormat(TimeFormat): |
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year_days = [None, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334] |
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def __init__(self, dt): |
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# Accepts either a datetime or date object. |
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self.data = dt |
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self.timezone = getattr(dt, 'tzinfo', None) |
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if hasattr(self.data, 'hour') and not self.timezone: |
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self.timezone = LocalTimezone(dt) |
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def b(self): |
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"Month, textual, 3 letters, lowercase; e.g. 'jan'" |
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return MONTHS_3[self.data.month] |
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def d(self): |
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"Day of the month, 2 digits with leading zeros; i.e. '01' to '31'" |
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return u'%02d' % self.data.day |
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def D(self): |
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"Day of the week, textual, 3 letters; e.g. 'Fri'" |
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return WEEKDAYS_ABBR[self.data.weekday()] |
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def F(self): |
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"Month, textual, long; e.g. 'January'" |
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return MONTHS[self.data.month] |
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def I(self): |
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"'1' if Daylight Savings Time, '0' otherwise." |
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if self.timezone.dst(self.data): |
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return u'1' |
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else: |
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return u'0' |
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def j(self): |
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"Day of the month without leading zeros; i.e. '1' to '31'" |
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return self.data.day |
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def l(self): |
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"Day of the week, textual, long; e.g. 'Friday'" |
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return WEEKDAYS[self.data.weekday()] |
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def L(self): |
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"Boolean for whether it is a leap year; i.e. True or False" |
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return isleap(self.data.year) |
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def m(self): |
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"Month; i.e. '01' to '12'" |
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return u'%02d' % self.data.month |
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def M(self): |
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"Month, textual, 3 letters; e.g. 'Jan'" |
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return MONTHS_3[self.data.month].title() |
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def n(self): |
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"Month without leading zeros; i.e. '1' to '12'" |
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return self.data.month |
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def N(self): |
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"Month abbreviation in Associated Press style. Proprietary extension." |
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return MONTHS_AP[self.data.month] |
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def O(self): |
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"Difference to Greenwich time in hours; e.g. '+0200'" |
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seconds = self.Z() |
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return u"%+03d%02d" % (seconds // 3600, (seconds // 60) % 60) |
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def r(self): |
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"RFC 2822 formatted date; e.g. 'Thu, 21 Dec 2000 16:01:07 +0200'" |
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return self.format('D, j M Y H:i:s O') |
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def S(self): |
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"English ordinal suffix for the day of the month, 2 characters; i.e. 'st', 'nd', 'rd' or 'th'" |
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if self.data.day in (11, 12, 13): # Special case |
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return u'th' |
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last = self.data.day % 10 |
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if last == 1: |
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return u'st' |
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if last == 2: |
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return u'nd' |
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if last == 3: |
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return u'rd' |
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return u'th' |
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def t(self): |
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"Number of days in the given month; i.e. '28' to '31'" |
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return u'%02d' % monthrange(self.data.year, self.data.month)[1] |
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def T(self): |
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"Time zone of this machine; e.g. 'EST' or 'MDT'" |
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name = self.timezone.tzname(self.data) |
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if name is None: |
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name = self.format('O') |
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return unicode(name) |
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def U(self): |
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"Seconds since the Unix epoch (January 1 1970 00:00:00 GMT)" |
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off = self.timezone.utcoffset(self.data) |
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return int(time.mktime(self.data.timetuple())) + off.seconds * 60 |
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def w(self): |
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"Day of the week, numeric, i.e. '0' (Sunday) to '6' (Saturday)" |
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return (self.data.weekday() + 1) % 7 |
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def W(self): |
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"ISO-8601 week number of year, weeks starting on Monday" |
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# Algorithm from http://www.personal.ecu.edu/mccartyr/ISOwdALG.txt |
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week_number = None |
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jan1_weekday = self.data.replace(month=1, day=1).weekday() + 1 |
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weekday = self.data.weekday() + 1 |
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day_of_year = self.z() |
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if day_of_year <= (8 - jan1_weekday) and jan1_weekday > 4: |
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if jan1_weekday == 5 or (jan1_weekday == 6 and isleap(self.data.year-1)): |
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week_number = 53 |
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else: |
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week_number = 52 |
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else: |
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if isleap(self.data.year): |
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i = 366 |
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else: |
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i = 365 |
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if (i - day_of_year) < (4 - weekday): |
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week_number = 1 |
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else: |
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j = day_of_year + (7 - weekday) + (jan1_weekday - 1) |
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week_number = j // 7 |
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if jan1_weekday > 4: |
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week_number -= 1 |
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return week_number |
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def y(self): |
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"Year, 2 digits; e.g. '99'" |
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return unicode(self.data.year)[2:] |
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def Y(self): |
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"Year, 4 digits; e.g. '1999'" |
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return self.data.year |
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def z(self): |
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"Day of the year; i.e. '0' to '365'" |
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doy = self.year_days[self.data.month] + self.data.day |
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if self.L() and self.data.month > 2: |
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doy += 1 |
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return doy |
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def Z(self): |
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""" |
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Time zone offset in seconds (i.e. '-43200' to '43200'). The offset for |
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timezones west of UTC is always negative, and for those east of UTC is |
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always positive. |
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""" |
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offset = self.timezone.utcoffset(self.data) |
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# Only days can be negative, so negative offsets have days=-1 and |
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# seconds positive. Positive offsets have days=0 |
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return offset.days * 86400 + offset.seconds |
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def format(value, format_string): |
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"Convenience function" |
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df = DateFormat(value) |
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return df.format(format_string) |
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def time_format(value, format_string): |
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"Convenience function" |
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tf = TimeFormat(value) |
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return tf.format(format_string)
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