UnixDateTimeConverter
Converts a DateTime to and from Unix epoch time
using Newtonsoft.Json.Utilities;
using System;
using System.Globalization;
namespace Newtonsoft.Json.Converters
{
public class UnixDateTimeConverter : DateTimeConverterBase
{
internal static readonly DateTime UnixEpoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
bool num = value is DateTime;
DateTime dateTime = num ? ((DateTime)value) : default(DateTime);
TimeSpan timeSpan;
long num2;
if (num) {
timeSpan = dateTime.ToUniversalTime() - UnixEpoch;
num2 = (long)timeSpan.TotalSeconds;
} else {
bool num3 = value is DateTimeOffset;
DateTimeOffset dateTimeOffset = num3 ? ((DateTimeOffset)value) : default(DateTimeOffset);
if (!num3)
throw new JsonSerializationException("Expected date object value.");
timeSpan = dateTimeOffset.ToUniversalTime() - (DateTimeOffset)UnixEpoch;
num2 = (long)timeSpan.TotalSeconds;
}
if (num2 < 0)
throw new JsonSerializationException("Cannot convert date value that is before Unix epoch of 00:00:00 UTC on 1 January 1970.");
writer.WriteValue(num2);
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
bool flag = ReflectionUtils.IsNullable(objectType);
if (reader.TokenType == JsonToken.Null) {
if (!flag)
throw JsonSerializationException.Create(reader, "Cannot convert null value to {0}.".FormatWith(CultureInfo.InvariantCulture, objectType));
return null;
}
long result;
if (reader.TokenType == JsonToken.Integer)
result = (long)reader.Value;
else {
if (reader.TokenType != JsonToken.String)
throw JsonSerializationException.Create(reader, "Unexpected token parsing date. Expected Integer or String, got {0}.".FormatWith(CultureInfo.InvariantCulture, reader.TokenType));
if (!long.TryParse((string)reader.Value, out result))
throw JsonSerializationException.Create(reader, "Cannot convert invalid value to {0}.".FormatWith(CultureInfo.InvariantCulture, objectType));
}
if (result >= 0) {
DateTime dateTime = UnixEpoch.AddSeconds((double)result);
if ((object)(flag ? Nullable.GetUnderlyingType(objectType) : objectType) == typeof(DateTimeOffset))
return new DateTimeOffset(dateTime, TimeSpan.Zero);
return dateTime;
}
throw JsonSerializationException.Create(reader, "Cannot convert value that is before Unix epoch of 00:00:00 UTC on 1 January 1970 to {0}.".FormatWith(CultureInfo.InvariantCulture, objectType));
}
}
}