def parse_time(value, length, cursor):
if value is None:
return None
if isinstance(value, six.text_type):
value = unicode_to_bytes(value)
try:
return datetime.time(*_parse_time_to_args(value, cursor))
except (TypeError, ValueError):
raise DataError("bad datetime: '%s'" % value)
def parse_date(value, length, cursor):
if value is None:
return None
if isinstance(value, six.text_type):
value = unicode_to_bytes(value)
if value == b'infinity':
return datetime.date.max
elif value == b'-infinity':
return datetime.date.min
try:
return datetime.date(*[int(x) for x in value.split(b'-')])
except (TypeError, ValueError):
if value.endswith(b'BC'):
raise ValueError('BC dates not supported')
raise DataError("bad datetime: '%s'" % bytes_to_unicode(value))
def parse_datetime(value, length, cursor):
if value is None:
return None
if isinstance(value, six.text_type):
value = unicode_to_bytes(value)
if value == b'infinity':
return datetime.datetime.max
elif value == b'-infinity':
return datetime.datetime.min
try:
date, time = value.split(b' ')
date_args = date.split(b'-')
return datetime.datetime(
int(date_args[0]),
int(date_args[1]),
int(date_args[2]),
*_parse_time_to_args(time, cursor))
except (TypeError, ValueError):
if value.endswith(b'BC'):
raise ValueError('BC dates not supported')
raise DataError("bad datetime: '%s'" % bytes_to_unicode(value))
def parse_interval(value, length, cursor):
"""Typecast an interval to a datetime.timedelta instance.
For example, the value '2 years 1 mon 3 days 10:01:39.100' is converted
to `datetime.timedelta(763, 36099, 100)`.
"""
if value is None:
return None
if isinstance(value, six.text_type):
value = unicode_to_bytes(value)
m = _re_interval.match(value)
if not m:
raise ValueError("failed to parse interval: '%s'" % value)
years, months, days, sign, hours, mins, secs, frac = m.groups()
days = int(days) if days is not None else 0
if months is not None:
days += int(months) * 30
if years is not None:
days += int(years) * 365
if hours is not None:
secs = int(hours) * 3600 + int(mins) * 60 + int(secs)
if frac is not None:
micros = int((frac + (b'0' * (6 - len(frac))))[:6])
else:
micros = 0
if sign == b'-':
secs = -secs
micros = -micros
else:
secs = micros = 0
return datetime.timedelta(days, secs, micros)
def getquoted(self):
return b''.join([b"'", unicode_to_bytes(str(self._uuid)), b"'::uuid"])
