internal static void WriteValue(DateTime value, JsonSerializerHandler handler)
{
if (handler.Option.DatetimeFormat == DatetimeFormatEnum.ISO8601)
{
// "yyyy-mm-ddThh:mm:ss.fffffffZ"
// 0123456789ABCDEFGHIJKL
//
// Yes, DateTime.Max is in fact guaranteed to have a 4 digit year (and no more)
// f of 7 digits allows for 1 Tick level resolution
char[] buffer = new char[36];
buffer[0] = '"';
// Year
uint val = (uint)value.Year;
var digits = DigitPairs[(byte)(val % 100)];
buffer[4] = digits.Second;
buffer[3] = digits.First;
digits = DigitPairs[(byte)(val / 100)];
buffer[2] = digits.Second;
buffer[1] = digits.First;
// delimiter
buffer[5] = '-';
// Month
digits = DigitPairs[value.Month];
buffer[7] = digits.Second;
buffer[6] = digits.First;
// Delimiter
buffer[8] = '-';
// Day
digits = DigitPairs[value.Day];
buffer[10] = digits.Second;
buffer[9] = digits.First;
// Delimiter
buffer[11] = 'T';
digits = DigitPairs[value.Hour];
buffer[13] = digits.Second;
buffer[12] = digits.First;
// Delimiter
buffer[14] = ':';
digits = DigitPairs[value.Minute];
buffer[16] = digits.Second;
buffer[15] = digits.First;
// Delimiter
buffer[17] = ':';
digits = DigitPairs[value.Second];
buffer[19] = digits.Second;
buffer[18] = digits.First;
int fracEnd;
var remainingTicks = (value - new DateTime(value.Year, value.Month, value.Day, value.Hour, value.Minute, value.Second)).Ticks;
if (remainingTicks > 0)
{
buffer[20] = '.';
var fracPart = remainingTicks % 100;
remainingTicks /= 100;
if (fracPart > 0)
{
digits = DigitPairs[fracPart];
buffer[27] = digits.Second;
buffer[26] = digits.First;
fracEnd = 28;
}
else
{
fracEnd = 26;
}
fracPart = remainingTicks % 100;
remainingTicks /= 100;
if (fracPart > 0)
{
digits = DigitPairs[fracPart];
buffer[25] = digits.Second;
buffer[24] = digits.First;
}
else
{
if (fracEnd == 26)
{
fracEnd = 24;
}
else
{
buffer[25] = '0';
buffer[24] = '0';
}
}
fracPart = remainingTicks % 100;
remainingTicks /= 100;
if (fracPart > 0)
{
digits = DigitPairs[fracPart];
buffer[23] = digits.Second;
buffer[22] = digits.First;
}
else
{
if (fracEnd == 24)
{
fracEnd = 22;
}
else
{
buffer[23] = '0';
buffer[22] = '0';
}
}
fracPart = remainingTicks;
buffer[21] = (char)('0' + fracPart);
}
else
{
fracEnd = 20;
}
buffer[fracEnd] = 'Z';
buffer[fracEnd + 1] = '"';
handler.WriteChars(buffer, 0, fracEnd + 2);
}
else if (handler.Option.DatetimeFormat == DatetimeFormatEnum.RFC1123)
{
// ddd, dd MMM yyyy HH:mm:ss GMT'"
handler.WriteChar('"');
// compiles as a switch
switch (value.DayOfWeek)
{
case DayOfWeek.Sunday: handler.WriteString("Sun, "); break;
case DayOfWeek.Monday: handler.WriteString("Mon, "); break;
case DayOfWeek.Tuesday: handler.WriteString("Tue, "); break;
case DayOfWeek.Wednesday: handler.WriteString("Wed, "); break;
case DayOfWeek.Thursday: handler.WriteString("Thu, "); break;
case DayOfWeek.Friday: handler.WriteString("Fri, "); break;
case DayOfWeek.Saturday: handler.WriteString("Sat, "); break;
}
{
var day = DigitPairs[value.Day];
handler.WriteChar(day.First);
handler.WriteChar(day.Second);
handler.WriteChar(' ');
}
// compiles as a switch
switch (value.Month)
{
case 1: handler.WriteString("Jan "); break;
case 2: handler.WriteString("Feb "); break;
case 3: handler.WriteString("Mar "); break;
case 4: handler.WriteString("Apr "); break;
case 5: handler.WriteString("May "); break;
case 6: handler.WriteString("Jun "); break;
case 7: handler.WriteString("Jul "); break;
case 8: handler.WriteString("Aug "); break;
case 9: handler.WriteString("Sep "); break;
case 10: handler.WriteString("Oct "); break;
case 11: handler.WriteString("Nov "); break;
case 12: handler.WriteString("Dec "); break;
}
{
var year = value.Year;
var firstHalfYear = DigitPairs[year / 100];
handler.WriteChar(firstHalfYear.First);
handler.WriteChar(firstHalfYear.Second);
var secondHalfYear = DigitPairs[year % 100];
handler.WriteChar(secondHalfYear.First);
handler.WriteChar(secondHalfYear.Second);
handler.WriteChar(' ');
}
{
var hour = DigitPairs[value.Hour];
handler.WriteChar(hour.First);
handler.WriteChar(hour.Second);
handler.WriteChar(':');
}
{
var minute = DigitPairs[value.Minute];
handler.WriteChar(minute.First);
handler.WriteChar(minute.Second);
handler.WriteChar(':');
}
{
var second = DigitPairs[value.Second];
handler.WriteChar(second.First);
handler.WriteChar(second.Second);
}
handler.WriteString(" GMT\"");
}
else if (handler.Option.DatetimeFormat == DatetimeFormatEnum.Microsoft)
{
/*
* "\/Date(628318530718)\/"
*/
handler.WriteString("\"\\/Date(");
handler.WriteLong((value.Ticks - 621355968000000000L) / 10000L);
handler.WriteString(")\\/\"");
}
}