54 lines
1.7 KiB
C#
54 lines
1.7 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.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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/// Converts a GUID object or value to/from JSON.
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/// </summary>
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public class JsonInt32Converter : JsonConverter<int>
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{
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/// <inheritdoc />
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public override int Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
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{
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static void ThrowFormatException() => throw new FormatException("Invalid format for an integer.");
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ReadOnlySpan<byte> span = stackalloc byte[0];
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if (reader.HasValueSequence)
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{
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long sequenceLength = reader.ValueSequence.Length;
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Span<byte> stackSpan = stackalloc byte[(int)sequenceLength];
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reader.ValueSequence.CopyTo(stackSpan);
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span = stackSpan;
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}
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else
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{
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span = reader.ValueSpan;
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}
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if (!Utf8Parser.TryParse(span, out int number, out _))
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{
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ThrowFormatException();
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}
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return number;
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}
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/// <inheritdoc />
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public override void Write(Utf8JsonWriter writer, int value, JsonSerializerOptions options)
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{
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static void ThrowInvalidOperationException() => throw new InvalidOperationException();
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Span<byte> span = stackalloc byte[16];
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if (Utf8Formatter.TryFormat(value, span, out int bytesWritten))
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{
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writer.WriteStringValue(span.Slice(0, bytesWritten));
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}
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ThrowInvalidOperationException();
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}
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}
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}
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