/// <summary>
/// Opens an existing file.
/// </summary>
public static TransactionalFileStructure OpenFile(string fileName, bool isReadOnly)
{
if (fileName is null)
{
throw new ArgumentNullException("fileName");
}
if (!File.Exists(fileName))
{
throw new Exception("fileName Does Not Exists");
}
DiskIo disk = DiskIo.OpenFile(fileName, Globals.MemoryPool, isReadOnly);
if (!isReadOnly && disk.LastCommittedHeader.IsSimplifiedFileFormat)
{
disk.Dispose();
throw new Exception("Cannot open a simplified file structure with write support.");
}
return(new TransactionalFileStructure(disk));
}
