wehub-resource-sync
107 lines
4.0 KiB
C#
107 lines
4.0 KiB
C#
/*
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* QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
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* Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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using System;
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using System.Linq;
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using Newtonsoft.Json;
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using Newtonsoft.Json.Converters;
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using System.Collections.Generic;
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namespace QuantConnect.Util
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{
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/// <summary>
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/// Provides a json converter that allows defining the date time format used
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/// </summary>
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public class DateTimeJsonConverter : JsonConverter
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{
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private readonly List<IsoDateTimeConverter> _converters;
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/// <summary>
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/// True, can read a json into a date time
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/// </summary>
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public override bool CanRead => true;
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/// <summary>
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/// True, can write a datetime to json
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/// </summary>
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public override bool CanWrite => true;
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/// <summary>
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/// Initializes a new instance of the <see cref="DateTimeJsonConverter"/> class
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/// </summary>
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/// <param name="format">>The date time format</param>
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public DateTimeJsonConverter(string format)
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{
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_converters = [new IsoDateTimeConverter() { DateTimeFormat = format }];
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="DateTimeJsonConverter"/> class
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/// </summary>
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/// <param name="format">>The date time format</param>
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/// <param name="format2">Other format for backwards compatibility</param>
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public DateTimeJsonConverter(string format, string format2) : this(format)
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{
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_converters.Add(new IsoDateTimeConverter() { DateTimeFormat = format2 });
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="DateTimeJsonConverter"/> class
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/// </summary>
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/// <param name="format">>The date time format</param>
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/// <param name="format2">Other format for backwards compatibility</param>
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/// <param name="format3">Other format for backwards compatibility</param>
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public DateTimeJsonConverter(string format, string format2, string format3) : this(format, format2)
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{
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_converters.Add(new IsoDateTimeConverter() { DateTimeFormat = format3 });
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}
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/// <summary>
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/// True if can convert the given object type
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/// </summary>
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public override bool CanConvert(Type objectType)
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{
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return objectType == typeof(DateTime) || objectType == typeof(string) || objectType == typeof(DateTime?);
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}
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/// <summary>
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/// Converts the given value
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/// </summary>
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public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
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{
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foreach (var converter in _converters)
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{
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try
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{
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return converter.ReadJson(reader, objectType, existingValue, serializer);
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}
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catch
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{
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}
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}
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throw new JsonSerializationException($"Unexpected value when converting date. Expected formats: {string.Join(",", _converters.Select(x => x.DateTimeFormat))}");
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}
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/// <summary>
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/// Writes the given value to json
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/// </summary>
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public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
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{
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_converters[0].WriteJson(writer, value, serializer);
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}
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}
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}
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