/// <summary>
/// Creates a new instance of a LuigiDataBlock by inflating it from a BinaryReader.
/// </summary>
/// <param name="reader">The binary reader containing the data to deserialize to create the object.</param>
/// <returns>A new instance of a LuigiDataBlock.</returns>
/// <remarks>It is assumed that the reader is currently positioned at the beginning of a serialized LUIGI data block.</remarks>
public static LuigiDataBlock Inflate(INTV.Core.Utility.BinaryReader reader)
{
LuigiDataBlock dataBlock = null;
var blockType = (LuigiDataBlockType)reader.ReadByte();
switch (blockType)
{
case LuigiDataBlockType.SetScrambleKey:
dataBlock = new LuigiScrambleKeyBlock();
break;
case LuigiDataBlockType.MemoryMapAndPermissionsTable:
dataBlock = new LuigiMemoryMapAndPermissionsTableBlock();
break;
case LuigiDataBlockType.DataHunk:
dataBlock = new LuigiDataHunkBlock();
break;
case LuigiDataBlockType.Metadata:
dataBlock = new LuigiMetadataBlock();
break;
case LuigiDataBlockType.EndOfFile:
dataBlock = new LuigiEndOfFileBlock();
break;
default:
dataBlock = new LuigiDataBlock((LuigiDataBlockType)blockType);
break;
}
dataBlock._deserializeByteCount = BlockTypeSize;
dataBlock._deserializeByteCount += dataBlock.Deserialize(reader);
return(dataBlock);
}
/// <summary>
/// Creates a new instance of a LuigiDataBlock by inflating it from a Stream.
/// </summary>
/// <param name="stream">The stream containing the data to deserialize to create the object.</param>
/// <returns>A new instance of a LuigiDataBlock.</returns>
public static LuigiDataBlock Inflate(System.IO.Stream stream)
{
LuigiDataBlock dataBlock = null;
using (var reader = new INTV.Core.Utility.BinaryReader(stream))
{
dataBlock = Inflate(reader);
}
return(dataBlock);
}
/// <summary>
/// Locates the first data block of the requested type in the ROM.
/// </summary>
/// <typeparam name="T">The type of LUIGI block to locate.</typeparam>
/// <returns>The data block, or <c>null</c> if no block of the requested type is in the ROM.</returns>
internal T LocateDataBlock <T>() where T : LuigiDataBlock
{
var dataBlock = default(T);
if (StreamUtilities.FileExists(RomPath))
{
using (var file = StreamUtilities.OpenFileStream(RomPath))
{
if (file != null)
{
if (file.Length > 0)
{
var desiredBlockType = LuigiDataBlock.GetBlockType <T>();
var luigiHeader = LuigiFileHeader.Inflate(file);
var bytesRead = luigiHeader.DeserializeByteCount;
// Start looking for desired block immediately after header.
var block = LuigiDataBlock.Inflate(file);
bytesRead += block.DeserializeByteCount;
if (StopIfScrambleKeyBlockFound(desiredBlockType, block.Type))
{
// Stop looking. If we hit the scramble key, there's nothing more to be looked at.
bytesRead = (int)file.Length;
}
while ((bytesRead < file.Length) && (block.Type != desiredBlockType) && (block.Type != LuigiDataBlockType.EndOfFile))
{
block = LuigiDataBlock.Inflate(file);
bytesRead += block.DeserializeByteCount;
if (StopIfScrambleKeyBlockFound(desiredBlockType, block.Type))
{
break;
}
}
if (block.Type == desiredBlockType)
{
dataBlock = block as T;
}
}
}
}
}
return(dataBlock);
}
