| import datetime |
| import re |
| |
| rfc3339_re = re.compile(r'(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2})(\.\d+)?(?:Z|([+-]\d{2}):(\d{2}))') |
| |
| def parse_rfc3339(v): |
| m = rfc3339_re.match(v) |
| if not m or m.group(0) != v: |
| return None |
| return parse_rfc3339_re(m) |
| |
| def parse_rfc3339_re(m): |
| r = map(int, m.groups()[:6]) |
| if m.group(7): |
| micro = float(m.group(7)) |
| else: |
| micro = 0 |
| |
| if m.group(8): |
| g = int(m.group(8), 10) * 60 + int(m.group(9), 10) |
| tz = _TimeZone(datetime.timedelta(0, g * 60)) |
| else: |
| tz = _TimeZone(datetime.timedelta(0, 0)) |
| |
| y, m, d, H, M, S = r |
| return datetime.datetime(y, m, d, H, M, S, int(micro * 1000000), tz) |
| |
| |
| def format_rfc3339(v): |
| offs = v.utcoffset() |
| offs = int(offs.total_seconds()) // 60 if offs is not None else 0 |
| |
| if offs == 0: |
| suffix = 'Z' |
| else: |
| if offs > 0: |
| suffix = '+' |
| else: |
| suffix = '-' |
| offs = -offs |
| suffix = '{0}{1:02}:{2:02}'.format(suffix, offs // 60, offs % 60) |
| |
| if v.microsecond: |
| return v.strftime('%Y-%m-%dT%H:%M:%S.%f') + suffix |
| else: |
| return v.strftime('%Y-%m-%dT%H:%M:%S') + suffix |
| |
| class _TimeZone(datetime.tzinfo): |
| def __init__(self, offset): |
| self._offset = offset |
| |
| def utcoffset(self, dt): |
| return self._offset |
| |
| def dst(self, dt): |
| return None |
| |
| def tzname(self, dt): |
| m = self._offset.total_seconds() // 60 |
| if m < 0: |
| res = '-' |
| m = -m |
| else: |
| res = '+' |
| h = m // 60 |
| m = m - h * 60 |
| return '{}{:.02}{:.02}'.format(res, h, m) |
