/// <summary>
/// Deserialize a set of core objects from a BinaryReader.
/// </summary>
/// <param name="reader">Source stream</param>
/// <param name="ignoreUnknownChunks">If set to true and an unknown RTTI type is encountered, read the object as
/// an array of bytes. Otherwise, raise an exception.</param>
public static CoreBinary FromData(BinaryReader reader, bool ignoreUnknownChunks = true)
{
var core = new CoreBinary();
while (reader.StreamRemainder() > 0)
{
#if COREFILE_DEBUG
System.Diagnostics.Debugger.Log(0, "Info", $"Beginning chunk parse at {reader.BaseStream.Position:X}\n");
#endif
var entry = RTTI.DeserializeType <CoreEntry>(reader);
var topLevelObjectType = RTTI.GetTypeById(entry.TypeId);
long expectedStreamPos = reader.BaseStream.Position + entry.ChunkSize;
if (entry.ChunkSize > reader.StreamRemainder())
{
throw new InvalidDataException($"Invalid chunk size {entry.ChunkSize} was supplied in Core file at offset {entry.ChunkOffset:X}");
}
if (topLevelObjectType != null)
{
entry.ContainedObject = RTTI.DeserializeType(reader, topLevelObjectType);
}
else
{
if (!ignoreUnknownChunks)
{
throw new InvalidDataException($"Unknown type ID {entry.TypeId:X16} found in Core file at offset {entry.ChunkOffset:X}");
}
// Invalid or unknown chunk ID hit - create an array of bytes "object" and try to continue with the rest of the file
entry.ContainedObject = reader.ReadBytes(entry.ChunkSize);
}
#if COREFILE_DEBUG
if (reader.BaseStream.Position < expectedStreamPos)
{
System.Diagnostics.Debugger.Log(0, "Warn", $"Short read of a chunk while deserializing object. {reader.BaseStream.Position} < {expectedStreamPos}. TypeId = {entry.TypeId:X16}\n");
}
#endif
// Check for overflows and underflows
if (reader.BaseStream.Position > expectedStreamPos)
{
throw new Exception("Read past the end of a chunk while deserializing object");
}
else if (reader.BaseStream.Position < expectedStreamPos)
{
throw new Exception("Short read of a chunk while deserializing object");
}
reader.BaseStream.Position = expectedStreamPos;
core._entries.Add(entry);
}
return(core);
}
public static List <object> Load(string filePath, bool ignoreUnknownChunks = false)
{
var coreFileObjects = new List <object>();
using (var reader = new BinaryReader(File.Open(filePath, FileMode.Open, FileAccess.Read, FileShare.Read)))
{
while (reader.BaseStream.Position != reader.BaseStream.Length)
{
//Console.WriteLine($"Beginning chunk parse at {reader.BaseStream.Position:X}");
var entry = RTTI.DeserializeType <Entry>(reader);
long currentFilePos = reader.BaseStream.Position;
long expectedFilePos = currentFilePos + entry.ChunkSize;
if ((currentFilePos + entry.ChunkSize) > reader.StreamRemainder())
{
throw new InvalidDataException($"Invalid chunk size {entry.ChunkSize} was supplied in Core file at offset {currentFilePos:X}");
}
// TODO: This needs to be part of Entry
Type topLevelObjectType = RTTI.GetTypeById(entry.TypeId);
object topLevelObject = null;
if (topLevelObjectType != null)
{
topLevelObject = RTTI.DeserializeType(reader, topLevelObjectType);
}
else
{
if (!ignoreUnknownChunks)
{
throw new InvalidDataException($"Unknown type ID {entry.TypeId:X16} found in Core file at offset {currentFilePos:X}");
}
// Invalid or unknown chunk ID hit - create an array of bytes "object" and try to continue with the rest of the file
topLevelObject = reader.ReadBytes(entry.ChunkSize);
}
if (reader.BaseStream.Position > expectedFilePos)
{
throw new Exception("Read past the end of a chunk while deserializing object");
}
else if (reader.BaseStream.Position < expectedFilePos)
{
throw new Exception("Short read of a chunk while deserializing object");
}
reader.BaseStream.Position = expectedFilePos;
coreFileObjects.Add(topLevelObject);
}
}
return(coreFileObjects);
}