async Task <BookFile> ReadBookFile(string path)
{
string ext = Path.GetExtension(path);
IBookFileReader reader = _lookup[ext];
try
{
BookFile book = await Task.Run(() => reader.Read(path));
_messages.Write("Read {0}", path);
return(book);
}
catch (Exception ex)
{
_messages.WriteError(ex, "reading {0}", path);
return(null);
}
}