private void ReadStreams(IBinaryAccessor accessor, long metadataOffset)
{
int numberOfStream = accessor.ReadUInt16();
int[] offsets = new int[numberOfStream];
int[] sizes = new int[numberOfStream];
string[] names = new string[numberOfStream];
for (int i = 0; i < numberOfStream; i++)
{
offsets[i] = accessor.ReadInt32();
sizes[i] = accessor.ReadInt32();
// Name of the stream; a zero-terminated ASCII string no longer than 31 characters (plus zero terminator).
// The name might be shorter, in which case the size of the stream header is correspondingly reduced,
// padded to the 4-byte boundary.
long startPos = accessor.Position;
names[i] = accessor.ReadNullTerminatedString(Encoding.ASCII);
accessor.Align(startPos, 4);
}
int tableIndex = -1;
for (int i = 0; i < numberOfStream; i++)
{
int offset = offsets[i];
int size = sizes[i];
string name = names[i];
if (name == MetadataConstants.StreamTable)
{
tableIndex = i;
_tables.IsOptimized = true;
}
else if (name == MetadataConstants.StreamTableUnoptimized)
{
tableIndex = i;
_tables.IsOptimized = false;
}
else if (name == MetadataConstants.StreamStrings)
{
accessor.Position = offset + metadataOffset;
_strings.Blob = new Blob(accessor.ReadBytes(size));
}
else if (name == MetadataConstants.StreamUserStrings)
{
accessor.Position = offset + metadataOffset;
_userStrings.Blob = new Blob(accessor.ReadBytes(size));
}
else if (name == MetadataConstants.StreamGuid)
{
accessor.Position = offset + metadataOffset;
_guids.Blob = new Blob(accessor.ReadBytes(size));
}
else if (name == MetadataConstants.StreamBlob)
{
accessor.Position = offset + metadataOffset;
_blobs.Blob = new Blob(accessor.ReadBytes(size));
}
else
{
accessor.Position = offset + metadataOffset;
var stream = new MetadataExternalStream(name, new Blob(accessor.ReadBytes(size)));
ExternalStreams.Add(stream);
}
}
if (tableIndex >= 0)
{
// Read table last as it relies on heaps.
accessor.Position = offsets[tableIndex] + metadataOffset;
_tables.Read(accessor);
}
}
private void WriteExternalStream(MetadataExternalStream externalStream)
{
WriteStreamHeader(externalStream.Name, externalStream.Blob.Length);
_blob.Write(ref _state.StreamPos, externalStream.Blob.GetBuffer(), 0, externalStream.Blob.Length);
}
