4c0da145f2
It can be replaced by the built-in datetime module. Change-Id: Ib33163496fb8068b9578c4cb231bf6d070cc78b9
114 lines
3.2 KiB
Python
114 lines
3.2 KiB
Python
import builtins
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import datetime
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import decimal
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from http import client as http_client
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import re
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try:
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import dateutil.parser
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except ImportError:
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dateutil = None # noqa
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date_re = r'(?P<year>-?\d{4,})-(?P<month>\d{2})-(?P<day>\d{2})'
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time_re = r'(?P<hour>\d{2}):(?P<min>\d{2}):(?P<sec>\d{2})' + \
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r'(\.(?P<sec_frac>\d+))?'
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tz_re = r'((?P<tz_sign>[+-])(?P<tz_hour>\d{2}):(?P<tz_min>\d{2}))' + \
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r'|(?P<tz_z>Z)'
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datetime_re = re.compile(
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'%sT%s(%s)?' % (date_re, time_re, tz_re))
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date_re = re.compile(date_re)
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time_re = re.compile('%s(%s)?' % (time_re, tz_re))
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if hasattr(builtins, '_'):
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_ = builtins._
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else:
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def _(s):
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return s
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def parse_isodate(value):
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m = date_re.match(value)
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if m is None:
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raise ValueError("'%s' is not a legal date value" % (value))
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try:
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return datetime.date(
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int(m.group('year')),
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int(m.group('month')),
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int(m.group('day')))
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except ValueError:
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raise ValueError("'%s' is a out-of-range date" % (value))
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def parse_isotime(value):
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m = time_re.match(value)
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if m is None:
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raise ValueError("'%s' is not a legal time value" % (value))
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try:
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ms = 0
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if m.group('sec_frac') is not None:
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f = decimal.Decimal('0.' + m.group('sec_frac'))
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f = str(f.quantize(decimal.Decimal('0.000001')))
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ms = int(f[2:])
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tz = _parse_tzparts(m.groupdict())
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return datetime.time(
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int(m.group('hour')),
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int(m.group('min')),
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int(m.group('sec')),
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ms,
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tz)
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except ValueError:
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raise ValueError("'%s' is a out-of-range time" % (value))
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def parse_isodatetime(value):
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if dateutil:
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return dateutil.parser.parse(value)
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m = datetime_re.match(value)
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if m is None:
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raise ValueError("'%s' is not a legal datetime value" % (value))
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try:
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ms = 0
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if m.group('sec_frac') is not None:
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f = decimal.Decimal('0.' + m.group('sec_frac'))
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f = f.quantize(decimal.Decimal('0.000001'))
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ms = int(str(f)[2:])
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tz = _parse_tzparts(m.groupdict())
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return datetime.datetime(
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int(m.group('year')),
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int(m.group('month')),
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int(m.group('day')),
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int(m.group('hour')),
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int(m.group('min')),
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int(m.group('sec')),
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ms,
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tz)
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except ValueError:
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raise ValueError("'%s' is a out-of-range datetime" % (value))
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def _parse_tzparts(parts):
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if 'tz_z' in parts and parts['tz_z'] == 'Z':
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return datetime.timezone.utc
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if 'tz_min' not in parts or not parts['tz_min']:
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return None
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tz_minute_offset = (int(parts['tz_hour']) * 60 + int(parts['tz_min']))
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tz_multiplier = -1 if parts['tz_sign'] == '-' else 1
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minutes = tz_multiplier * tz_minute_offset
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return datetime.timezone(datetime.timedelta(minutes=minutes))
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def is_valid_code(code_value):
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"""
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This function checks if incoming value in http response codes range.
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"""
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return code_value in http_client.responses
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def is_client_error(code):
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""" Checks client error code (RFC 2616)."""
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return 400 <= code < 500
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