private static void ConvertArray(Stream input, ValueTag tag, JsonWriter writer)
{
var length = input.ReadPackedValueUInt32();
var basePosition = input.Position;
var endPosition = basePosition + length;
if (endPosition > input.Length)
{
throw new EndOfStreamException();
}
writer.WriteStartArray();
var elementTag = new ValueTag(input.ReadValueU8());
if (elementTag.Type != ValueType.Invalid)
{
do
{
ConvertValue(input, elementTag, writer);
elementTag = new ValueTag(input.ReadValueU8());
}while (elementTag.Type != ValueType.Invalid);
}
writer.WriteEndArray();
if (input.Position != endPosition)
{
throw new FormatException();
}
}
private static void ConvertDictionary(Stream input, ValueTag tag, JsonWriter writer)
{
var length = input.ReadPackedValueUInt32();
var basePosition = input.Position;
var endPosition = basePosition + length;
if (endPosition > input.Length)
{
throw new EndOfStreamException();
}
writer.WriteStartObject();
var propertyTag = new ValueTag(input.ReadValueU8());
while (propertyTag.Type != ValueType.Invalid)
{
var propertyName = input.ReadStringZ(Encoding.UTF8);
writer.WritePropertyName(propertyName);
ConvertValue(input, propertyTag, writer);
propertyTag = new ValueTag(input.ReadValueU8());
}
writer.WriteEndObject();
if (input.Position != endPosition)
{
throw new FormatException();
}
}
private static string ReadString(Stream input, ValueTag tag)
{
var length = input.ReadPackedValueUInt32();
var basePosition = input.Position;
var endPosition = basePosition + length;
if (endPosition > input.Length)
{
throw new EndOfStreamException();
}
var value = input.ReadStringZ(Encoding.UTF8);
if (input.Position != endPosition)
{
throw new FormatException();
}
return(value);
}
private static void Convert(Stream input, JsonWriter writer)
{
var tag = new ValueTag(input.ReadValueU8());
ConvertValue(input, tag, writer);
}
private static void ConvertValue(Stream input, ValueTag tag, JsonWriter writer)
{
switch (tag.Type)
{
case ValueType.Array:
{
ConvertArray(input, tag, writer);
break;
}
case ValueType.Object:
{
ConvertDictionary(input, tag, writer);
break;
}
case ValueType.Bool:
{
writer.WriteValue(input.ReadValueU8() != 0);
break;
}
case ValueType.String:
{
writer.WriteValue(ReadString(input, tag));
break;
}
case ValueType.Int32:
{
writer.WriteValue(input.ReadValueS32(Endian.Little));
break;
}
case ValueType.Int64:
{
writer.WriteValue(input.ReadValueS64(Endian.Little));
break;
}
case ValueType.Float64:
{
writer.WriteValue(input.ReadValueF64(Endian.Little));
break;
}
case ValueType.Guid:
{
writer.WriteValue(input.ReadValueGuid(Endian.Big));
break;
}
case ValueType.SHA1:
{
var bytes = input.ReadBytes(20);
writer.WriteStartObject();
var oldFormatting = writer.Formatting;
writer.Formatting = Formatting.None;
writer.WritePropertyName("type");
writer.WriteValue("sha1");
writer.WritePropertyName("value");
writer.WriteValue(BitConverter.ToString(bytes).Replace("-", "").ToLowerInvariant());
writer.WriteEndObject();
writer.Formatting = oldFormatting;
break;
}
case ValueType.Bytes:
{
var length = input.ReadPackedValueUInt32();
var basePosition = input.Position;
var endPosition = basePosition + length;
if (endPosition > input.Length)
{
throw new EndOfStreamException();
}
if (length > int.MaxValue)
{
throw new FormatException();
}
var bytes = input.ReadBytes((int)length);
if (input.Position != endPosition)
{
throw new FormatException();
}
writer.WriteStartObject();
var oldFormatting = writer.Formatting;
writer.Formatting = Formatting.None;
writer.WritePropertyName("type");
writer.WriteValue("bytes");
writer.WritePropertyName("value");
writer.WriteValue(BitConverter.ToString(bytes).Replace("-", "").ToLowerInvariant());
writer.WriteEndObject();
writer.Formatting = oldFormatting;
break;
}
default:
{
throw new NotSupportedException();
}
}
}
