Mercurial > babel > old > babel-test
diff babel/dates.py @ 38:a22b7656e9ae
Started implementation of datetime parsing, using a very basic approach for now.
author | cmlenz |
---|---|
date | Tue, 05 Jun 2007 22:59:24 +0000 |
parents | 3666f3d3df15 |
children | 3b314a78015d |
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--- a/babel/dates.py +++ b/babel/dates.py @@ -22,6 +22,7 @@ """ from datetime import date, datetime, time, timedelta, tzinfo +import re from babel.core import Locale from babel.util import default_locale, UTC @@ -315,13 +316,84 @@ return parse_pattern(format).apply(time, locale) def parse_date(string, locale=LC_TIME): - raise NotImplementedError + """Parse a date from a string. + + This function uses the date format for the locale as a hint to determine + the order in which the date fields appear in the string. + + >>> parse_date('4/1/04', locale='en_US') + datetime.date(2004, 4, 1) + >>> parse_date('01.04.2004', locale='de_DE') + datetime.date(2004, 4, 1) + + :param string: the string containing the date + :param locale: a `Locale` object or a locale identifier + :return: the parsed date + :rtype: `date` + """ + # TODO: try ISO format first? + format = get_date_format(locale=locale).pattern.lower() + year_idx = format.index('y') + month_idx = format.index('m') + if month_idx < 0: + month_idx = format.index('l') + day_idx = format.index('d') + + indexes = [(year_idx, 'Y'), (month_idx, 'M'), (day_idx, 'D')] + indexes.sort() + indexes = dict([(item[1], idx) for idx, item in enumerate(indexes)]) + + # FIXME: this currently only supports numbers, but should also support month + # names, both in the requested locale, and english + + numbers = re.findall('(\d+)', string) + year = numbers[indexes['Y']] + if len(year) == 2: + year = 2000 + int(year) + else: + year = int(year) + month = int(numbers[indexes['M']]) + day = int(numbers[indexes['D']]) + if month > 12: + month, day = day, month + return date(year, month, day) def parse_datetime(string, locale=LC_TIME): raise NotImplementedError def parse_time(string, locale=LC_TIME): - raise NotImplementedError + """Parse a tiem from a string. + + This function uses the time format for the locale as a hint to determine + the order in which the time fields appear in the string. + + >>> parse_time('15:30:00', locale='en_US') + datetime.time(15, 30) + + :param string: the string containing the time + :param locale: a `Locale` object or a locale identifier + :return: the parsed time + :rtype: `time` + """ + # TODO: try ISO format first? + format = get_time_format(locale=locale).pattern.lower() + hour_idx = format.index('h') + if hour_idx < 0: + hour_idx = format.index('k') + min_idx = format.index('m') + sec_idx = format.index('s') + + indexes = [(hour_idx, 'H'), (min_idx, 'M'), (sec_idx, 'S')] + indexes.sort() + indexes = dict([(item[1], idx) for idx, item in enumerate(indexes)]) + + # FIXME: support 12 hour clock, and 0-based hour specification + + numbers = re.findall('(\d+)', string) + hour = int(numbers[indexes['H']]) + minute = int(numbers[indexes['M']]) + second = int(numbers[indexes['S']]) + return time(hour, minute, second) class DateTimePattern(object):