/// <summary>
/// Reads BSON binary data from the reader.
/// </summary>
/// <returns>A BsonBinaryData.</returns>
#pragma warning disable 618 // about obsolete BsonBinarySubType.OldBinary
public override BsonBinaryData ReadBinaryData()
{
if (Disposed)
{
ThrowObjectDisposedException();
}
VerifyBsonType("ReadBinaryData", BsonType.Binary);
int size = ReadSize();
var subType = (BsonBinarySubType)_buffer.ReadByte();
if (subType == BsonBinarySubType.OldBinary)
{
// sub type OldBinary has two sizes (for historical reasons)
int size2 = ReadSize();
if (size2 != size - 4)
{
throw new FileFormatException("Binary sub type OldBinary has inconsistent sizes");
}
size = size2;
if (_binaryReaderSettings.FixOldBinarySubTypeOnInput)
{
subType = BsonBinarySubType.Binary; // replace obsolete OldBinary with new Binary sub type
}
}
var bytes = _buffer.ReadBytes(size);
var guidRepresentation = GuidRepresentation.Unspecified;
if (subType == BsonBinarySubType.UuidLegacy || subType == BsonBinarySubType.UuidStandard)
{
if (_binaryReaderSettings.GuidRepresentation != GuidRepresentation.Unspecified)
{
var expectedSubType = (_binaryReaderSettings.GuidRepresentation == GuidRepresentation.Standard) ? BsonBinarySubType.UuidStandard : BsonBinarySubType.UuidLegacy;
if (subType != expectedSubType)
{
var message = string.Format(
"The GuidRepresentation for the reader is {0}, which requires the binary sub type to be {1}, not {2}.",
_binaryReaderSettings.GuidRepresentation, expectedSubType, subType);
throw new FileFormatException(message);
}
}
guidRepresentation = (subType == BsonBinarySubType.UuidStandard) ? GuidRepresentation.Standard : _binaryReaderSettings.GuidRepresentation;
}
State = GetNextState();
return(new BsonBinaryData(bytes, subType, guidRepresentation));
}
/// <summary>
/// Reads BSON binary data from the reader.
/// </summary>
/// <param name="bytes">The binary data.</param>
/// <param name="subType">The binary data subtype.</param>
#pragma warning disable 618 // about obsolete BsonBinarySubType.OldBinary
public override void ReadBinaryData(
out byte[] bytes,
out BsonBinarySubType subType
)
{
if (disposed)
{
ThrowObjectDisposedException();
}
VerifyBsonType("ReadBinaryData", BsonType.Binary);
int size = ReadSize();
subType = (BsonBinarySubType)buffer.ReadByte();
if (subType == BsonBinarySubType.OldBinary)
{
// sub type OldBinary has two sizes (for historical reasons)
int size2 = ReadSize();
if (size2 != size - 4)
{
throw new FileFormatException("Binary sub type OldBinary has inconsistent sizes");
}
size = size2;
if (settings.FixOldBinarySubTypeOnInput)
{
subType = BsonBinarySubType.Binary; // replace obsolete OldBinary with new Binary sub type
}
}
bytes = buffer.ReadBytes(size);
state = GetNextState();
}
internal byte[] RemoveLastDocument(BsonBuffer buffer)
{
var lastDocumentLength = buffer.Position - _lastDocumentStartPosition;
buffer.Position = _lastDocumentStartPosition;
var lastDocument = buffer.ReadBytes(lastDocumentLength);
buffer.Length = _lastDocumentStartPosition;
BackpatchMessageLength(buffer);
return lastDocument;
}
/// <summary>
/// Reads BSON binary data from the reader.
/// </summary>
/// <param name="bytes">The binary data.</param>
/// <param name="subType">The binary data subtype.</param>
/// <param name="guidRepresentation">The representation for Guids.</param>
#pragma warning disable 618 // about obsolete BsonBinarySubType.OldBinary
public override void ReadBinaryData(
out byte[] bytes,
out BsonBinarySubType subType,
out GuidRepresentation guidRepresentation
)
{
if (disposed)
{
ThrowObjectDisposedException();
}
VerifyBsonType("ReadBinaryData", BsonType.Binary);
int size = ReadSize();
subType = (BsonBinarySubType)buffer.ReadByte();
if (subType == BsonBinarySubType.OldBinary)
{
// sub type OldBinary has two sizes (for historical reasons)
int size2 = ReadSize();
if (size2 != size - 4)
{
throw new FileFormatException("Binary sub type OldBinary has inconsistent sizes");
}
size = size2;
if (settings.FixOldBinarySubTypeOnInput)
{
subType = BsonBinarySubType.Binary; // replace obsolete OldBinary with new Binary sub type
}
}
switch (subType)
{
case BsonBinarySubType.UuidLegacy:
case BsonBinarySubType.UuidStandard:
if (settings.GuidRepresentation != GuidRepresentation.Unspecified)
{
var expectedSubType = (settings.GuidRepresentation == GuidRepresentation.Standard) ? BsonBinarySubType.UuidStandard : BsonBinarySubType.UuidLegacy;
if (subType != expectedSubType)
{
var message = string.Format("The GuidRepresentation for the reader is {0}, which requires the binary sub type to be {1}, not {2}.", settings.GuidRepresentation, expectedSubType, subType);
throw new FileFormatException(message);
}
}
guidRepresentation = (subType == BsonBinarySubType.UuidStandard) ? GuidRepresentation.Standard : settings.GuidRepresentation;
break;
default:
guidRepresentation = GuidRepresentation.Unspecified;
break;
}
bytes = buffer.ReadBytes(size);
state = GetNextState();
}
private IByteBuffer RemoveOverflow(BsonBuffer buffer)
{
var lastRequestLength = buffer.Position - _lastRequestPosition;
buffer.Position = _lastRequestPosition;
var lastArrayItem = buffer.ReadBytes(lastRequestLength);
if ((BsonType)lastArrayItem[0] != BsonType.Document)
{
throw new MongoInternalException("Expected overflow item to be a BsonDocument.");
}
var sliceOffset = Array.IndexOf<byte>(lastArrayItem, 0) + 1; // skip over type and array index
var overflow = new ByteArrayBuffer(lastArrayItem, sliceOffset, lastArrayItem.Length - sliceOffset, true);
buffer.Position = _lastRequestPosition;
buffer.Length = _lastRequestPosition;
_batchCount--;
_batchLength = buffer.Position - _batchStartPosition;
return overflow;
}
private byte[] RemoveLastDocument(BsonBuffer buffer)
{
var lastDocumentLength = buffer.Position - _lastDocumentStartPosition;
buffer.Position = _lastDocumentStartPosition;
var lastDocument = buffer.ReadBytes(lastDocumentLength);
buffer.Position = _lastDocumentStartPosition;
buffer.Length = _lastDocumentStartPosition;
_batchCount -= 1;
_batchLength = buffer.Position - _batchStartPosition;
return lastDocument;
}
