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using System;
namespace MessagePack.Formatters
{
/// <summary>
/// Serialize by .NET native DateTime binary format.
/// </summary>
public sealed class NativeDateTimeFormatter : IMessagePackFormatter<DateTime>
{
public static readonly NativeDateTimeFormatter Instance = new NativeDateTimeFormatter();
public int Serialize(ref byte[] bytes, int offset, DateTime value, IFormatterResolver formatterResolver)
{
var dateData = value.ToBinary();
return MessagePackBinary.WriteInt64(ref bytes, offset, dateData);
}
public DateTime Deserialize(byte[] bytes, int offset, IFormatterResolver formatterResolver, out int readSize)
{
if (MessagePackBinary.GetMessagePackType(bytes, offset) == MessagePackType.Extension)
{
return DateTimeFormatter.Instance.Deserialize(bytes, offset, formatterResolver, out readSize);
}
var dateData = MessagePackBinary.ReadInt64(bytes, offset, out readSize);
return DateTime.FromBinary(dateData);
}
}
public sealed class NativeDateTimeArrayFormatter : IMessagePackFormatter<DateTime[]>
{
public static readonly NativeDateTimeArrayFormatter Instance = new NativeDateTimeArrayFormatter();
public int Serialize(ref byte[] bytes, int offset, DateTime[] value, IFormatterResolver formatterResolver)
{
if (value == null)
{
return MessagePackBinary.WriteNil(ref bytes, offset);
}
else
{
var startOffset = offset;
offset += MessagePackBinary.WriteArrayHeader(ref bytes, offset, value.Length);
for (int i = 0; i < value.Length; i++)
{
offset += MessagePackBinary.WriteInt64(ref bytes, offset, value[i].ToBinary());
}
return offset - startOffset;
}
}
public DateTime[] Deserialize(byte[] bytes, int offset, IFormatterResolver formatterResolver, out int readSize)
{
if (MessagePackBinary.IsNil(bytes, offset))
{
readSize = 1;
return null;
}
else
{
var startOffset = offset;
var len = MessagePackBinary.ReadArrayHeader(bytes, offset, out readSize);
offset += readSize;
var array = new DateTime[len];
for (int i = 0; i < array.Length; i++)
{
var dateData = MessagePackBinary.ReadInt64(bytes, offset, out readSize);
array[i] = DateTime.FromBinary(dateData);
offset += readSize;
}
readSize = offset - startOffset;
return array;
}
}
}
// Old-Spec
// bin 8, bin 16, bin 32, str 8, str 16, str 32 -> fixraw or raw 16 or raw 32
// fixraw -> fixstr, raw16 -> str16, raw32 -> str32
// https://github.com/msgpack/msgpack/blob/master/spec-old.md
/// <summary>
/// Old-MessagePack spec's string formatter.
/// </summary>
public sealed class OldSpecStringFormatter : IMessagePackFormatter<string>
{
public static readonly OldSpecStringFormatter Instance = new OldSpecStringFormatter();
// Old spec does not exists str 8 format.
public int Serialize(ref byte[] bytes, int offset, string value, IFormatterResolver formatterResolver)
{
if (value == null) return MessagePackBinary.WriteNil(ref bytes, offset);
MessagePackBinary.EnsureCapacity(ref bytes, offset, StringEncoding.UTF8.GetMaxByteCount(value.Length) + 5);
int useOffset;
if (value.Length <= MessagePackRange.MaxFixStringLength)
{
useOffset = 1;
}
else if (value.Length <= ushort.MaxValue)
{
useOffset = 3;
}
else
{
useOffset = 5;
}
// skip length area
var writeBeginOffset = offset + useOffset;
var byteCount = StringEncoding.UTF8.GetBytes(value, 0, value.Length, bytes, writeBeginOffset);
// move body and write prefix
if (byteCount <= MessagePackRange.MaxFixStringLength)
{
if (useOffset != 1)
{
Buffer.BlockCopy(bytes, writeBeginOffset, bytes, offset + 1, byteCount);
}
bytes[offset] = (byte)(MessagePackCode.MinFixStr | byteCount);
return byteCount + 1;
}
else if (byteCount <= ushort.MaxValue)
{
if (useOffset != 3)
{
Buffer.BlockCopy(bytes, writeBeginOffset, bytes, offset + 3, byteCount);
}
bytes[offset] = MessagePackCode.Str16;
bytes[offset + 1] = unchecked((byte)(byteCount >> 8));
bytes[offset + 2] = unchecked((byte)byteCount);
return byteCount + 3;
}
else
{
if (useOffset != 5)
{
Buffer.BlockCopy(bytes, writeBeginOffset, bytes, offset + 5, byteCount);
}
bytes[offset] = MessagePackCode.Str32;
bytes[offset + 1] = unchecked((byte)(byteCount >> 24));
bytes[offset + 2] = unchecked((byte)(byteCount >> 16));
bytes[offset + 3] = unchecked((byte)(byteCount >> 8));
bytes[offset + 4] = unchecked((byte)byteCount);
return byteCount + 5;
}
}
public string Deserialize(byte[] bytes, int offset, IFormatterResolver formatterResolver, out int readSize)
{
return MessagePackBinary.ReadString(bytes, offset, out readSize);
}
}
/// <summary>
/// Old-MessagePack spec's binary formatter.
/// </summary>
public sealed class OldSpecBinaryFormatter : IMessagePackFormatter<byte[]>
{
public static readonly OldSpecBinaryFormatter Instance = new OldSpecBinaryFormatter();
public int Serialize(ref byte[] bytes, int offset, byte[] value, IFormatterResolver formatterResolver)
{
if (value == null) return MessagePackBinary.WriteNil(ref bytes, offset);
var byteCount = value.Length;
if (byteCount <= MessagePackRange.MaxFixStringLength)
{
MessagePackBinary.EnsureCapacity(ref bytes, offset, byteCount + 1);
bytes[offset] = (byte)(MessagePackCode.MinFixStr | byteCount);
Buffer.BlockCopy(value, 0, bytes, offset + 1, byteCount);
return byteCount + 1;
}
else if (byteCount <= ushort.MaxValue)
{
MessagePackBinary.EnsureCapacity(ref bytes, offset, byteCount + 3);
bytes[offset] = MessagePackCode.Str16;
bytes[offset + 1] = unchecked((byte)(byteCount >> 8));
bytes[offset + 2] = unchecked((byte)byteCount);
Buffer.BlockCopy(value, 0, bytes, offset + 3, byteCount);
return byteCount + 3;
}
else
{
MessagePackBinary.EnsureCapacity(ref bytes, offset, byteCount + 5);
bytes[offset] = MessagePackCode.Str32;
bytes[offset + 1] = unchecked((byte)(byteCount >> 24));
bytes[offset + 2] = unchecked((byte)(byteCount >> 16));
bytes[offset + 3] = unchecked((byte)(byteCount >> 8));
bytes[offset + 4] = unchecked((byte)byteCount);
Buffer.BlockCopy(value, 0, bytes, offset + 5, byteCount);
return byteCount + 5;
}
}
public byte[] Deserialize(byte[] bytes, int offset, IFormatterResolver formatterResolver, out int readSize)
{
var type = MessagePackBinary.GetMessagePackType(bytes, offset);
if (type == MessagePackType.Nil)
{
readSize = 1;
return null;
}
else if (type == MessagePackType.Binary)
{
return MessagePackBinary.ReadBytes(bytes, offset, out readSize);
}
else if (type == MessagePackType.String)
{
var code = bytes[offset];
unchecked
{
if (MessagePackCode.MinFixStr <= code && code <= MessagePackCode.MaxFixStr)
{
var length = bytes[offset] & 0x1F;
readSize = length + 1;
var result = new byte[length];
Buffer.BlockCopy(bytes, offset + 1, result, 0, result.Length);
return result;
}
else if (code == MessagePackCode.Str8)
{
var length = (int)bytes[offset + 1];
readSize = length + 2;
var result = new byte[length];
Buffer.BlockCopy(bytes, offset + 2, result, 0, result.Length);
return result;
}
else if (code == MessagePackCode.Str16)
{
var length = (bytes[offset + 1] << 8) + (bytes[offset + 2]);
readSize = length + 3;
var result = new byte[length];
Buffer.BlockCopy(bytes, offset + 3, result, 0, result.Length);
return result;
}
else if (code == MessagePackCode.Str32)
{
var length = (int)((uint)(bytes[offset + 1] << 24) | (uint)(bytes[offset + 2] << 16) | (uint)(bytes[offset + 3] << 8) | (uint)bytes[offset + 4]);
readSize = length + 5;
var result = new byte[length];
Buffer.BlockCopy(bytes, offset + 5, result, 0, result.Length);
return result;
}
}
}
throw new InvalidOperationException(string.Format("code is invalid. code:{0} format:{1}", bytes[offset], MessagePackCode.ToFormatName(bytes[offset])));
}
}
}
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