def choose_plural(amount, variants): """ Choose proper form for plural. Value is a amount, parameters are forms of noun. Forms are variants for 1, 2, 5 nouns. It may be tuple of elements, or string where variants separates each other by comma. Examples:: {{ some_int|choose_plural:"пример,примера,примеров" }} """ try: if isinstance(variants, basestring): uvariants = pseudo_unicode(variants, encoding, default_value) else: uvariants = [pseudo_unicode(v, encoding, default_uvalue) for v in variants] ures = numeral.choose_plural(amount, uvariants) res = pseudo_str(ures, encoding, default_value) except Exception, err: # because filter must die silently try: default_variant = variants except Exception: default_variant = "" res = default_value % {"error": err, "value": default_variant}
def distance_of_time_in_words(from_time, accuracy=1, to_time=None): """ Represents distance of time in words @param from_time: source time (in seconds from epoch) @type from_time: C{int}, C{float} or C{datetime.datetime} @param accuracy: level of accuracy (1..3), default=1 @type accuracy: C{int} @param to_time: target time (in seconds from epoch), default=None translates to current time @type to_time: C{int}, C{float} or C{datetime.datetime} @return: distance of time in words @rtype: unicode @raise L{uktils.err.InputParameterError}: input parameters' check failed @raise ValueError: accuracy is lesser or equal zero """ current = False if to_time is None: current = True to_time = datetime.datetime.now() check_positive(accuracy, strict=True) if not isinstance(from_time, datetime.datetime): from_time = datetime.datetime.fromtimestamp(from_time) if not isinstance(to_time, datetime.datetime): to_time = datetime.datetime.fromtimestamp(to_time) dt_delta = to_time - from_time difference = dt_delta.days*86400 + dt_delta.seconds minutes_orig = int(abs(difference)/60.0) hours_orig = int(abs(difference)/3600.0) days_orig = int(abs(difference)/86400.0) in_future = from_time > to_time words = [] values = [] alternatives = [] days = days_orig hours = hours_orig - days_orig*24 words.append(u"%d %s" % (days, numeral.choose_plural(days, DAY_VARIANTS))) values.append(days) words.append(u"%d %s" % \ (hours, numeral.choose_plural(hours, HOUR_VARIANTS))) values.append(hours) hours == 1 and current and alternatives.append(u"годину") minutes = minutes_orig - hours_orig*60 words.append(u"%d %s" % (minutes, numeral.choose_plural(minutes, MINUTE_VARIANTS))) values.append(minutes) minutes == 1 and current and alternatives.append(u"хвилину") # убираем из values и words конечные нули while values and not values[-1]: values.pop() words.pop() # убираем из values и words начальные нули while values and not values[0]: values.pop(0) words.pop(0) limit = min(accuracy, len(words)) real_words = words[:limit] real_values = values[:limit] # снова убираем конечные нули while real_values and not real_values[-1]: real_values.pop() real_words.pop() limit -= 1 real_str = u" ".join(real_words) # альтернативные варианты нужны только если в real_words одно значение # и, вдобавок, если используется текущее время alter_str = limit == 1 and current and alternatives and \ not (days and hours==1) and \ not (hours and minutes==1) and \ alternatives[0] _result_str = alter_str or real_str result_str = in_future and u"%s %s" % (PREFIX_IN, _result_str) \ or u"%s %s" % (_result_str, SUFFIX_AGO) # если же прошло менее минуты, то real_words -- пустой, и поэтому # нужно брать alternatives[0], а не result_str zero_str = minutes == 0 and not real_words and \ (in_future and u"менш ніж через хвилину" \ or u"менше хвилини тому") # нужно использовать вчера/позавчера/завтра/послезавтра # если days 1..2 и в real_words одно значение day_alternatives = DAY_ALTERNATIVES.get(days, False) alternate_day = day_alternatives and current and limit == 1 and \ ((in_future and day_alternatives[1]) \ or day_alternatives[0]) final_str = not real_words and zero_str or alternate_day or result_str return final_str