public static void ReadChunk( this BinaryReader self, ReadChunkDelegate readAction )
{
// self.ReadGuardBytes ( StartBytes );
uint chunckSize = self.ReadUInt32 ();
if ( chunckSize > 0 )
{
long position = self.BaseStream.Position;
byte[] bytes = self.ReadBytes ( (int)chunckSize );
MemoryStream ms = new MemoryStream ( bytes );
try { readAction.Invoke ( new BinaryReader ( ms ) ); }
catch ( System.Exception ex )
{
Debug.LogError ( "Error reading chunk stream. Got an exception." );
Debug.LogException ( ex );
}
long positionToBe = ( position + chunckSize );
if ( self.BaseStream.Position != positionToBe )
{
Debug.LogError ( "Error reading stream, chunk size mismatch. Seeking in stream ( position is " + self.BaseStream.Position + ", should be : " + positionToBe + "." );
self.BaseStream.Seek ( positionToBe, SeekOrigin.Begin );
}
}
// self.ReadGuardBytes ( EndBytes );
}
public void ReadChunks(ReadChunkDelegate tryParseChunk)
{
do
{
ChunkId chunkID = ChunkId.FromStream(_reader);
if (chunkID == ChunkId.Empty) // End reached
{
break;
}
// Check if chunk is known, and if not, mark it
if (_knownChunkList != null && !UnknownChunksFound &&
!_knownChunkList.Contains(chunkID))
{
UnknownChunksFound = true;
}
// Read up to a 64 bit number for the chunk size
long chunkSize = LEB128.ReadLong(_reader);
// Try loading chunk content
long chunkStart = _reader.BaseStream.Position;
bool chunkRecognized = false;
Exception chunkException = null;
try
{
chunkRecognized = tryParseChunk(chunkID, chunkSize);
}
catch (OperationCanceledException)
{ // Don't actually keep going if it's an 'OperationCanceledException'
throw;
}
catch (Exception exc)
{
chunkException = exc;
}
long readDataCount = _reader.BaseStream.Position - chunkStart;
// Print messages for various problems that might have occurred while loading
if (chunkException != null)
{
logger.Error(chunkException, "Chunk loading raised an exception" + GetLocoationStr(chunkStart, chunkSize, chunkID));
}
else if (!chunkRecognized)
{
logger.Warn("Chunk not recognized" + GetLocoationStr(chunkStart, chunkSize, chunkID));
}
else if (readDataCount > chunkSize)
{
logger.Error("More data was read than available (Read: " + readDataCount + " Available: " + chunkSize + ")" + GetLocoationStr(chunkStart, chunkSize, chunkID));
}
else if (readDataCount < chunkSize)
{
logger.Warn("Not all the available data was read (Read: " + readDataCount + " Available: " + chunkSize + ")" + GetLocoationStr(chunkStart, chunkSize, chunkID));
}
// Adjust _stream position if necessaary
if (readDataCount != chunkSize)
{
_reader.BaseStream.Position = chunkStart + chunkSize;
}
} while (true);
}
