def _i18n_parse_date_0()

in trac/trac/util/datefmt.py [0:0]

• 42 lines of code
• 25 McCabe index (conditional complexity)

def _i18n_parse_date_0(text, order, regexp, period_names, month_names, tzinfo):
    matches = regexp.findall(text)
    if not matches:
        return None

    # remove am/pm markers on ahead
    period = None
    for idx, match in enumerate(matches):
        period = period_names.get(match)
        if period is not None:
            del matches[idx]
            break

    # for date+time, use 0 seconds if seconds are missing
    if 's' in order and len(matches) == 5:
        matches.insert(order['s'], 0)

    values = {}
    for key, idx in order.iteritems():
        if idx < len(matches):
            value = matches[idx]
            if key == 'y':
                if len(value) == 2 and value.isdigit():
                    value = '20' + value
            values[key] = value

    if 'y' not in values or 'M' not in values or 'd' not in values:
        raise ValueError

    for key in ('y', 'M', 'd'):
        value = values[key]
        value = month_names.get(value)
        if value is not None:
            if key == 'M':
                values[key] = value
            else:
                values[key], values['M'] = values['M'], value
            break

    values = dict((key, int(value)) for key, value in values.iteritems())
    values.setdefault('h', 0)
    values.setdefault('m', 0)
    values.setdefault('s', 0)

    if period and values['h'] <= 12:
        if period == 'am':
            values['h'] %= 12
        elif period == 'pm':
            values['h'] = values['h'] % 12 + 12

    t = tzinfo.localize(datetime(*(values[k] for k in 'yMdhms')))
    return tzinfo.normalize(t)