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56 lines
2 KiB
C#
56 lines
2 KiB
C#
using System;
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using System.Buffers;
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using System.Buffers.Text;
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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 MediaBrowser.Common.Json.Converters
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{
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/// <summary>
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/// Long to String JSON converter.
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/// Javascript does not support 64-bit integers.
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/// </summary>
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public class JsonInt64Converter : JsonConverter<long>
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{
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/// <summary>
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/// Read JSON string as int64.
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/// </summary>
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/// <param name="reader"><see cref="Utf8JsonReader"/>.</param>
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/// <param name="type">Type.</param>
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/// <param name="options">Options.</param>
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/// <returns>Parsed value.</returns>
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public override long Read(ref Utf8JsonReader reader, Type type, JsonSerializerOptions options)
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{
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if (reader.TokenType == JsonTokenType.String)
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{
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// try to parse number directly from bytes
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var span = reader.HasValueSequence ? reader.ValueSequence.ToArray() : reader.ValueSpan;
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if (Utf8Parser.TryParse(span, out long number, out var bytesConsumed) && span.Length == bytesConsumed)
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{
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return number;
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}
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// try to parse from a string if the above failed, this covers cases with other escaped/UTF characters
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if (long.TryParse(reader.GetString(), out number))
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{
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return number;
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}
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}
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// fallback to default handling
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return reader.GetInt64();
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}
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/// <summary>
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/// Write long to JSON string.
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/// </summary>
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/// <param name="writer"><see cref="Utf8JsonWriter"/>.</param>
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/// <param name="value">Value to write.</param>
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/// <param name="options">Options.</param>
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public override void Write(Utf8JsonWriter writer, long value, JsonSerializerOptions options)
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{
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writer.WriteStringValue(value.ToString(NumberFormatInfo.InvariantInfo));
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}
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}
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}
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