protected override bool TryParseUtc(TimeConverterContext context, Match match, out TimeConverterResult result)
{
result = null;
var hours = match.Groups["hours"].Value;
var ampm = match.Groups["ampm"].Value;
var timezone = match.Groups["timezone"].Value;
var tzz = context.TimeZones.FirstOrDefault(tz => tz.IsMatch(timezone));
if (tzz != null && DateTime.TryParseExact($"{hours}{ampm}", $"htt", CultureInfo.InvariantCulture, DateTimeStyles.None, out var time))
{
var offset = tzz.TimeZoneInfo.GetUtcOffset(time);
result = new TimeConverterResult()
{
Expression = context.Expression,
ResultUtc = new DateTimeOffset(time.Subtract(offset), TimeSpan.Zero),
Rule = this,
TimeZone = tzz
};
return(true);
}
return(false);
}
public bool TryParse(TimeConverterContext context, out TimeConverterResult result)
{
result = null;
var match = Regex.Match(context.Expression);
if (!match.Success)
{
return(false);
}
return(TryParseUtc(context, match, out result));
}
protected abstract bool TryParseUtc(TimeConverterContext context, Match match, out TimeConverterResult result);