/// <summary>
/// Dump message-pack binary to JSON string.
/// </summary>
public static string ToJson(byte[] bytes)
{
if (bytes == null || bytes.Length == 0)
{
return("");
}
if (MessagePackBinary.GetMessagePackType(bytes, 0) == MessagePackType.Extension)
{
var header = MessagePackBinary.ReadExtensionFormatHeader(bytes, 0, out int readSize);
if (header.TypeCode == ExtensionTypeCode)
{
// decode lz4
var offset = readSize;
var length = MessagePackBinary.ReadInt32(bytes, offset, out readSize);
offset += readSize;
var buffer = LZ4MemoryPool.GetBuffer();
if (buffer.Length < length)
{
buffer = new byte[length];
}
// LZ4 Decode
LZ4Codec.Decode(bytes, offset, bytes.Length - offset, buffer, 0, length);
bytes = buffer; // use LZ4 bytes
}
}
var sb = new StringBuilder();
ToJsonCore(bytes, 0, sb);
return(sb.ToString());
}
static T DeserializeCore <T>(ArraySegment <byte> bytes, IFormatterResolver resolver)
{
var formatter = resolver.GetFormatterWithVerify <T>();
int readSize;
if (MessagePackBinary.GetMessagePackType(bytes.Array, 0) == MessagePackType.Extension)
{
var header = MessagePackBinary.ReadExtensionFormatHeader(bytes.Array, bytes.Offset, out readSize);
if (header.TypeCode == ExtensionTypeCode)
{
// decode lz4
var offset = bytes.Offset + readSize;
var length = MessagePackBinary.ReadInt32(bytes.Array, offset, out readSize);
offset += readSize;
var buffer = LZ4MemoryPool.GetBuffer(); // use LZ4 Pool
if (buffer.Length < length)
{
buffer = new byte[length];
}
// LZ4 Decode
LZ4Codec.Decode(bytes.Array, offset, bytes.Count - offset, buffer, 0, length);
return(formatter.Deserialize(buffer, 0, resolver, out readSize));
}
}
return(formatter.Deserialize(bytes.Array, bytes.Offset, resolver, out readSize));
}
public static byte[] Decode(ArraySegment <byte> bytes)
{
int readSize;
if (MessagePackBinary.GetMessagePackType(bytes.Array, bytes.Offset) == MessagePackType.Extension)
{
var header = MessagePackBinary.ReadExtensionFormatHeader(bytes.Array, bytes.Offset, out readSize);
if (header.TypeCode == ExtensionTypeCode)
{
// decode lz4
var offset = bytes.Offset + readSize;
var length = MessagePackBinary.ReadInt32(bytes.Array, offset, out readSize);
offset += readSize;
var buffer = new byte[length]; // use new buffer.
// LZ4 Decode
var len = bytes.Count + bytes.Offset - offset;
LZ4Codec.Decode(bytes.Array, offset, len, buffer, 0, length);
return(buffer);
}
}
if (bytes.Offset == 0 && bytes.Array.Length == bytes.Count)
{
// return same reference
return(bytes.Array);
}
var result = new byte[bytes.Count];
Buffer.BlockCopy(bytes.Array, bytes.Offset, result, 0, result.Length);
return(result);
}
static int ToJsonCore(byte[] bytes, int offset, StringBuilder builder)
{
var readSize = 0;
var type = MessagePackBinary.GetMessagePackType(bytes, offset);
switch (type)
{
case MessagePackType.Integer:
var code = bytes[offset];
if (MessagePackCode.MinNegativeFixInt <= code && code <= MessagePackCode.MaxNegativeFixInt)
{
builder.Append(MessagePackBinary.ReadSByte(bytes, offset, out readSize));
}
else if (MessagePackCode.MinFixInt <= code && code <= MessagePackCode.MaxFixInt)
{
builder.Append(MessagePackBinary.ReadByte(bytes, offset, out readSize));
}
else if (code == MessagePackCode.Int8)
{
builder.Append(MessagePackBinary.ReadSByte(bytes, offset, out readSize));
}
else if (code == MessagePackCode.Int16)
{
builder.Append(MessagePackBinary.ReadInt16(bytes, offset, out readSize));
}
else if (code == MessagePackCode.Int32)
{
builder.Append(MessagePackBinary.ReadInt32(bytes, offset, out readSize));
}
else if (code == MessagePackCode.Int64)
{
builder.Append(MessagePackBinary.ReadInt64(bytes, offset, out readSize));
}
else if (code == MessagePackCode.UInt8)
{
builder.Append(MessagePackBinary.ReadByte(bytes, offset, out readSize));
}
else if (code == MessagePackCode.UInt16)
{
builder.Append(MessagePackBinary.ReadUInt16(bytes, offset, out readSize));
}
else if (code == MessagePackCode.UInt32)
{
builder.Append(MessagePackBinary.ReadUInt32(bytes, offset, out readSize));
}
else if (code == MessagePackCode.UInt64)
{
builder.Append(MessagePackBinary.ReadUInt64(bytes, offset, out readSize));
}
break;
case MessagePackType.Boolean:
builder.Append(MessagePackBinary.ReadBoolean(bytes, offset, out readSize) ? "true" : "false");
break;
case MessagePackType.Float:
var floatCode = bytes[offset];
if (floatCode == MessagePackCode.Float32)
{
builder.Append(MessagePackBinary.ReadSingle(bytes, offset, out readSize).ToString(System.Globalization.CultureInfo.InvariantCulture));
}
else
{
builder.Append(MessagePackBinary.ReadDouble(bytes, offset, out readSize).ToString(System.Globalization.CultureInfo.InvariantCulture));
}
break;
case MessagePackType.String:
WriteJsonString(MessagePackBinary.ReadString(bytes, offset, out readSize), builder);
break;
case MessagePackType.Binary:
builder.Append("\"" + Convert.ToBase64String(MessagePackBinary.ReadBytes(bytes, offset, out readSize)) + "\"");
break;
case MessagePackType.Array:
{
var length = MessagePackBinary.ReadArrayHeaderRaw(bytes, offset, out readSize);
var totalReadSize = readSize;
offset += readSize;
builder.Append("[");
for (int i = 0; i < length; i++)
{
readSize = ToJsonCore(bytes, offset, builder);
offset += readSize;
totalReadSize += readSize;
if (i != length - 1)
{
builder.Append(",");
}
}
builder.Append("]");
return(totalReadSize);
}
case MessagePackType.Map:
{
var length = MessagePackBinary.ReadMapHeaderRaw(bytes, offset, out readSize);
var totalReadSize = readSize;
offset += readSize;
builder.Append("{");
for (int i = 0; i < length; i++)
{
// write key
{
var keyType = MessagePackBinary.GetMessagePackType(bytes, offset);
if (keyType == MessagePackType.String || keyType == MessagePackType.Binary)
{
readSize = ToJsonCore(bytes, offset, builder);
}
else
{
builder.Append("\"");
readSize = ToJsonCore(bytes, offset, builder);
builder.Append("\"");
}
offset += readSize;
totalReadSize += readSize;
}
builder.Append(":");
// write body
{
readSize = ToJsonCore(bytes, offset, builder);
offset += readSize;
totalReadSize += readSize;
}
if (i != length - 1)
{
builder.Append(",");
}
}
builder.Append("}");
return(totalReadSize);
}
case MessagePackType.Extension:
var extHeader = MessagePackBinary.ReadExtensionFormatHeader(bytes, offset, out readSize);
if (extHeader.TypeCode == ReservedMessagePackExtensionTypeCode.DateTime)
{
var dt = MessagePackBinary.ReadDateTime(bytes, offset, out readSize);
builder.Append("\"");
builder.Append(dt.ToString("o", CultureInfo.InvariantCulture));
builder.Append("\"");
}
#if NETSTANDARD1_4
else if (extHeader.TypeCode == TypelessFormatter.ExtensionTypeCode)
{
int startOffset = offset;
// prepare type name token
offset += 6;
var typeNameToken = new StringBuilder();
var typeNameReadSize = ToJsonCore(bytes, offset, typeNameToken);
offset += typeNameReadSize;
int startBuilderLength = builder.Length;
if (extHeader.Length > typeNameReadSize)
{
// object map or array
var typeInside = MessagePackBinary.GetMessagePackType(bytes, offset);
if (typeInside != MessagePackType.Array && typeInside != MessagePackType.Map)
{
builder.Append("{");
}
offset += ToJsonCore(bytes, offset, builder);
// insert type name token to start of object map or array
if (typeInside != MessagePackType.Array)
{
typeNameToken.Insert(0, "\"$type\":");
}
if (typeInside != MessagePackType.Array && typeInside != MessagePackType.Map)
{
builder.Append("}");
}
if (builder.Length - startBuilderLength > 2)
{
typeNameToken.Append(",");
}
builder.Insert(startBuilderLength + 1, typeNameToken.ToString());
}
else
{
builder.Append("{\"$type\":\"" + typeNameToken.ToString() + "}");
}
readSize = offset - startOffset;
}
#endif
else
{
var ext = MessagePackBinary.ReadExtensionFormat(bytes, offset, out readSize);
builder.Append("[");
builder.Append(ext.TypeCode);
builder.Append(",");
builder.Append("\"");
builder.Append(Convert.ToBase64String(ext.Data));
builder.Append("\"");
builder.Append("]");
}
break;
case MessagePackType.Unknown:
case MessagePackType.Nil:
default:
readSize = 1;
builder.Append("null");
break;
}
return(readSize);
}