public PCFFile(IFileHandle path, bool memStream, PCFfileType fileType = PCFfileType.Unknown)
{
this.memStream = memStream;
this.path = path;
this.fileType = fileType;
this.blockData = new Dictionary <PCFResourceType, DataBlockBase>();
//This must exist in order for pcf file to work properly.
this.indexBlock = new IndexBlock();
}
void LoadDataFromDisk(PCFResourceType loadFlags, bool streamResources, bool assemblyMode)
{
Stream file = this.path.GetFileStream(FileMode.Open);
//Load header first.
this.fileHeader = LoadHeader(file);
int bytesRead = HeaderByteLength;
int fileLength = (int)file.Length;
while (bytesRead < fileLength)
{
int chunkLength = GetNextSegmentLength(file);
PCFBlockTypes blockType = GetNextBlockType(file);
DataBlockBase block = null;
PCFResourceType resourceType = PCFResourceType.NONE;
if (blockType == PCFBlockTypes.INDEXBLOCK)
{
block = new IndexBlock();
this.blockData.Add(PCFResourceType.INDEX, block);
}
else if (blockType == PCFBlockTypes.NODEBLOCK)
{
block = new NodeBlock(loadFlags);
this.blockData.Add(PCFResourceType.NODE, block);
}
else if (blockType == PCFBlockTypes.RESOURCEBLOCK)
{
//Read 4 bytes to determine resourcetype.
file.Read(INT_BUFFER, 0, ChunkByteLength);
int rawResourceTypeValue = BitConverter.ToInt32(INT_BUFFER, 0);
resourceType = (PCFResourceType)Enum.ToObject(typeof(PCFResourceType), rawResourceTypeValue);
//Allows us to mask what blocks to read in from file.
if ((resourceType & loadFlags) != 0)
{
block = new ResourceBlock(resourceType, streamResources);
this.blockData.Add(resourceType, block);
}
}
else
{
Debug.LogError("Unknown block type");
}
//Increment file position, make sure to count the chunk size bytes.
bytesRead += chunkLength + ChunkByteLength;
if (block != null)
{
if (memStream)
{
int bytsOffset = ChunkByteLength;
if (blockType == PCFBlockTypes.RESOURCEBLOCK)
{
bytsOffset += ChunkByteLength;
}
long fileStreamPos = file.Position;
byte[] streamBytes = new byte[chunkLength - bytsOffset];
file.Read(streamBytes, 0, chunkLength - bytsOffset);
Stream stream = new MemoryStream(streamBytes);
block.SetBytes(stream, chunkLength, fileStreamPos, assemblyMode);
}
else
{
//Will internally read from file and increment its position.
block.SetBytes(file, chunkLength, 0, assemblyMode);
}
}
else
{
//Manually seek to next chunk incase SetBytes was never called.
file.Seek(bytesRead, SeekOrigin.Begin);
}
}
if (file != null)
{
//Stop reading pcf file.
file.Close();
}
}
public void Unload()
{
this.blockData.Clear();
this.blockData = null;
this.indexBlock = null;
}
