mirror of
https://github.com/JKorf/CryptoExchange.Net
synced 2025-06-08 16:36:15 +00:00
242 lines
11 KiB
C#
242 lines
11 KiB
C#
using System;
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using System.Diagnostics;
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using System.Diagnostics.CodeAnalysis;
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using System.Globalization;
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using System.Text.Json;
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using System.Text.Json.Serialization;
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namespace CryptoExchange.Net.Converters.SystemTextJson
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{
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/// <summary>
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/// Date time converter
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/// </summary>
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public class DateTimeConverter : JsonConverterFactory
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{
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private static readonly DateTime _epoch = new(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
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private const long _ticksPerSecond = TimeSpan.TicksPerMillisecond * 1000;
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private const double _ticksPerMicrosecond = TimeSpan.TicksPerMillisecond / 1000d;
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private const double _ticksPerNanosecond = TimeSpan.TicksPerMillisecond / 1000d / 1000;
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/// <inheritdoc />
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public override bool CanConvert(Type typeToConvert)
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{
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return typeToConvert == typeof(DateTime) || typeToConvert == typeof(DateTime?);
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}
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/// <inheritdoc />
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public override JsonConverter CreateConverter(Type typeToConvert, JsonSerializerOptions options)
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{
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Type converterType = typeof(DateTimeConverterInner<>).MakeGenericType(typeToConvert);
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return (JsonConverter)Activator.CreateInstance(converterType);
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}
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private class DateTimeConverterInner<T> : JsonConverter<T>
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{
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public override T Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
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=> (T)((object?)ReadDateTime(ref reader, typeToConvert, options) ?? default(T))!;
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private DateTime? ReadDateTime(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
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{
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if (reader.TokenType == JsonTokenType.Null)
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{
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if (typeToConvert == typeof(DateTime))
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Trace.WriteLine($"{DateTime.Now:yyyy/MM/dd HH:mm:ss:fff} | Warning | DateTime value of null, but property is not nullable");
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return default;
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}
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if (reader.TokenType is JsonTokenType.Number)
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{
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var longValue = reader.GetDouble();
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if (longValue == 0 || longValue == -1)
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return default;
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return ParseFromDouble(longValue);
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}
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else if (reader.TokenType is JsonTokenType.String)
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{
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var stringValue = reader.GetString();
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if (string.IsNullOrWhiteSpace(stringValue)
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|| stringValue == "-1"
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|| stringValue == "0001-01-01T00:00:00Z"
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|| double.TryParse(stringValue, out var doubleVal) && doubleVal == 0)
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{
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return default;
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}
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return ParseFromString(stringValue!);
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}
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else
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{
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return reader.GetDateTime();
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}
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}
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public override void Write(Utf8JsonWriter writer, T value, JsonSerializerOptions options)
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{
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if (value == null)
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writer.WriteNullValue();
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else
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{
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var dtValue = (DateTime)(object)value;
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if (dtValue == default)
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writer.WriteStringValue(default(DateTime));
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else
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writer.WriteNumberValue((long)Math.Round((dtValue - new DateTime(1970, 1, 1)).TotalMilliseconds));
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}
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}
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}
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/// <summary>
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/// Parse a long value to datetime
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/// </summary>
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/// <param name="longValue"></param>
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/// <returns></returns>
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public static DateTime ParseFromDouble(double longValue)
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{
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if (longValue < 19999999999)
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return ConvertFromSeconds(longValue);
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if (longValue < 19999999999999)
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return ConvertFromMilliseconds(longValue);
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if (longValue < 19999999999999999)
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return ConvertFromMicroseconds(longValue);
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return ConvertFromNanoseconds(longValue);
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}
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/// <summary>
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/// Parse a string value to datetime
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/// </summary>
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/// <param name="stringValue"></param>
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/// <returns></returns>
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public static DateTime ParseFromString(string stringValue)
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{
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if (stringValue!.Length == 12 && stringValue.StartsWith("202"))
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{
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// Parse 202303261200 format
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if (!int.TryParse(stringValue.Substring(0, 4), out var year)
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|| !int.TryParse(stringValue.Substring(4, 2), out var month)
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|| !int.TryParse(stringValue.Substring(6, 2), out var day)
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|| !int.TryParse(stringValue.Substring(8, 2), out var hour)
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|| !int.TryParse(stringValue.Substring(10, 2), out var minute))
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{
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Trace.WriteLine($"{DateTime.Now:yyyy/MM/dd HH:mm:ss:fff} | Warning | Unknown DateTime format: " + stringValue);
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return default;
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}
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return new DateTime(year, month, day, hour, minute, 0, DateTimeKind.Utc);
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}
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if (stringValue.Length == 8)
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{
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// Parse 20211103 format
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if (!int.TryParse(stringValue.Substring(0, 4), out var year)
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|| !int.TryParse(stringValue.Substring(4, 2), out var month)
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|| !int.TryParse(stringValue.Substring(6, 2), out var day))
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{
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Trace.WriteLine($"{DateTime.Now:yyyy/MM/dd HH:mm:ss:fff} | Warning | Unknown DateTime format: " + stringValue);
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return default;
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}
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return new DateTime(year, month, day, 0, 0, 0, DateTimeKind.Utc);
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}
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if (stringValue.Length == 6)
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{
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// Parse 211103 format
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if (!int.TryParse(stringValue.Substring(0, 2), out var year)
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|| !int.TryParse(stringValue.Substring(2, 2), out var month)
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|| !int.TryParse(stringValue.Substring(4, 2), out var day))
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{
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Trace.WriteLine("{DateTime.Now:yyyy/MM/dd HH:mm:ss:fff} | Warning | Unknown DateTime format: " + stringValue);
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return default;
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}
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return new DateTime(year + 2000, month, day, 0, 0, 0, DateTimeKind.Utc);
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}
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if (double.TryParse(stringValue, NumberStyles.Float, CultureInfo.InvariantCulture, out var doubleValue))
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{
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// Parse 1637745563.000 format
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if (doubleValue <= 0)
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return default;
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if (doubleValue < 19999999999)
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return ConvertFromSeconds(doubleValue);
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if (doubleValue < 19999999999999)
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return ConvertFromMilliseconds((long)doubleValue);
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if (doubleValue < 19999999999999999)
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return ConvertFromMicroseconds((long)doubleValue);
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return ConvertFromNanoseconds((long)doubleValue);
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}
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if (stringValue.Length == 10)
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{
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// Parse 2021-11-03 format
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var values = stringValue.Split('-');
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if (!int.TryParse(values[0], out var year)
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|| !int.TryParse(values[1], out var month)
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|| !int.TryParse(values[2], out var day))
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{
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Trace.WriteLine("{DateTime.Now:yyyy/MM/dd HH:mm:ss:fff} | Warning | Unknown DateTime format: " + stringValue);
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return default;
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}
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return new DateTime(year, month, day, 0, 0, 0, DateTimeKind.Utc);
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}
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return DateTime.Parse(stringValue, CultureInfo.InvariantCulture, DateTimeStyles.AdjustToUniversal | DateTimeStyles.AssumeUniversal);
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}
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/// <summary>
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/// Convert a seconds since epoch (01-01-1970) value to DateTime
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/// </summary>
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/// <param name="seconds"></param>
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/// <returns></returns>
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public static DateTime ConvertFromSeconds(double seconds) => _epoch.AddTicks((long)Math.Round(seconds * _ticksPerSecond));
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/// <summary>
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/// Convert a milliseconds since epoch (01-01-1970) value to DateTime
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/// </summary>
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/// <param name="milliseconds"></param>
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/// <returns></returns>
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public static DateTime ConvertFromMilliseconds(double milliseconds) => _epoch.AddTicks((long)Math.Round(milliseconds * TimeSpan.TicksPerMillisecond));
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/// <summary>
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/// Convert a microseconds since epoch (01-01-1970) value to DateTime
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/// </summary>
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/// <param name="microseconds"></param>
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/// <returns></returns>
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public static DateTime ConvertFromMicroseconds(double microseconds) => _epoch.AddTicks((long)Math.Round(microseconds * _ticksPerMicrosecond));
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/// <summary>
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/// Convert a nanoseconds since epoch (01-01-1970) value to DateTime
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/// </summary>
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/// <param name="nanoseconds"></param>
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/// <returns></returns>
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public static DateTime ConvertFromNanoseconds(double nanoseconds) => _epoch.AddTicks((long)Math.Round(nanoseconds * _ticksPerNanosecond));
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/// <summary>
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/// Convert a DateTime value to seconds since epoch (01-01-1970) value
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/// </summary>
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/// <param name="time"></param>
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/// <returns></returns>
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[return: NotNullIfNotNull("time")]
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public static long? ConvertToSeconds(DateTime? time) => time == null ? null : (long)Math.Round((time.Value - _epoch).TotalSeconds);
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/// <summary>
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/// Convert a DateTime value to milliseconds since epoch (01-01-1970) value
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/// </summary>
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/// <param name="time"></param>
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/// <returns></returns>
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[return: NotNullIfNotNull("time")]
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public static long? ConvertToMilliseconds(DateTime? time) => time == null ? null : (long)Math.Round((time.Value - _epoch).TotalMilliseconds);
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/// <summary>
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/// Convert a DateTime value to microseconds since epoch (01-01-1970) value
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/// </summary>
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/// <param name="time"></param>
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/// <returns></returns>
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[return: NotNullIfNotNull("time")]
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public static long? ConvertToMicroseconds(DateTime? time) => time == null ? null : (long)Math.Round((time.Value - _epoch).Ticks / _ticksPerMicrosecond);
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/// <summary>
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/// Convert a DateTime value to nanoseconds since epoch (01-01-1970) value
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/// </summary>
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/// <param name="time"></param>
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/// <returns></returns>
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[return: NotNullIfNotNull("time")]
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public static long? ConvertToNanoseconds(DateTime? time) => time == null ? null : (long)Math.Round((time.Value - _epoch).Ticks / _ticksPerNanosecond);
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}
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}
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