private void Load()
{
Span <byte> data;
using (var ms = new MemoryStream())
{
_source.CopyToStream(ms);
ms.Position = 0;
data = new Span <byte>(ms.ToArray());
}
var rowsCount = (int)data.Slice(0, 4).To <uint>();
var dataStart = data.IndexOf(DataSeparator);
var rowSize = rowsCount > 0 ? (dataStart - 4) / rowsCount : 0;
var dataSection = data.Slice(dataStart);
var rows = new List <DatRow>();
for (var r = 0; r < rowsCount; r++)
{
var rowBytes = data.Slice(4 + r * rowSize, rowSize);
var datRow = new DatRow(ref rowBytes, ref dataSection, _spec, _idx);
rows.Add(datRow);
}
_rows = rows;
_isLoaded = true;
}
public static void Extract(this IFile file, string path)
{
var destFile = new FileInfo(path);
if (!destFile.Directory !.Exists)
{
destFile.Directory.Create();
}
using var fs = destFile.Exists ? destFile.OpenWrite() : destFile.Create();
file.CopyToStream(fs);
}
public void CopyFrom(IFile file)
{
if (file is DiskFile diskFile)
{
File.Copy(diskFile.Path, Path, true);
}
else
{
using (var fs = new FileStream(Path, FileMode.OpenOrCreate, FileAccess.Write,
FileShare.None, WriteStreamBuffer, FileOptions.None))
{
file.CopyToStream(fs);
}
}
}