BloombergLP::bdlt::Iso8601Util::parseRelaxed

Parse the specified initial length characters of the specified "relaxed" ISO 8601 string as a Datetime or DatetimeTz value, depending on the presence of a zone designator, and load the value into the specified result. Return 0 on success, and a non-zero value (with no effect) otherwise. string is assumed to be of the form: ` YYYY-MM-DD(T| )hh:mm:ss{(.|,)s+}{(+|-)hh{:}mm|Z} ` The "relaxed" format parsed by this function is a superset of the strict ISO 8601 format, currently allowing a SPACE character to be used as a separated (where ISO 8601 requires a T). Exactly length characters are parsed; parsing will fail if a proper prefix of string matches the expected format, but the entire length characters do not. If an optional fractional second having more than six digits is present in string, it is rounded to the nearest value in microseconds. If the optional zone designator is present in the string, the input is parsed as a DatetimeTz value, and as a Datetime value otherwise. If a leap second is detected (i.e., the parsed value of the second attribute is 60; see {Leap Seconds}), the second attribute is taken to be 59, then an additional second is added to result at the end. If the "hh:mm:ss" portion of string is "24:00:00", then the fractional second must be absent or 0, and the zone designator must be absent or indicate UTC. The behavior is undefined unless 0 <= length.