public GameTable(string path)
{
using (var stream = File.OpenRead(path))
using (var reader = new BinaryReader(stream))
{
// header
ReadOnlySpan <GameTableHeader> headerSpan = MemoryMarshal.Cast <byte, GameTableHeader>(
reader.ReadBytes(Marshal.SizeOf <GameTableHeader>()));
header = headerSpan[0];
// fields
stream.Position = Marshal.SizeOf <GameTableHeader>() + (int)header.FieldOffset;
ReadOnlySpan <GameTableField> fields = MemoryMarshal.Cast <byte, GameTableField>(
reader.ReadBytes(Marshal.SizeOf <GameTableField>() * (int)header.FieldCount));
// optimisation to prevent too much CPU time being spent on GetCustomAttribute for large tables
var attributeCache = new Dictionary <FieldInfo, GameTableFieldArrayAttribute>();
foreach (FieldInfo modelField in typeof(T).GetFields())
{
GameTableFieldArrayAttribute attribute = modelField.GetCustomAttribute <GameTableFieldArrayAttribute>();
attributeCache.Add(modelField, attribute);
}
ValidateModelFields(fields, attributeCache);
ReadEntries(reader, fields, attributeCache);
ReadLookupTable(reader);
}
}
public GameTable(string path)
{
using (FileStream fileStream = File.OpenRead(path))
using (var stream = new BufferedStream(fileStream, bufferSize))
using (var reader = new BinaryReader(stream))
{
if (reader.BaseStream.Remaining() < Marshal.SizeOf <GameTableHeader>())
{
throw new InvalidDataException();
}
// header
ReadOnlySpan <GameTableHeader> headerSpan
= MemoryMarshal.Cast <byte, GameTableHeader>(reader.ReadBytes(headerSize));
header = headerSpan[0];
if (header.Signature != 0x4454424C)
{
throw new InvalidDataException();
}
// fields
stream.Position = headerSize + (int)header.FieldOffset;
ReadOnlySpan <GameTableField> fields = MemoryMarshal.Cast <byte, GameTableField>(
reader.ReadBytes(fieldSize * (int)header.FieldCount));
ValidateModelFields(fields);
ReadEntries(reader, fields);
}
}
