public IFormat Open(FileItem f)
{
// check extensions
if (f.Extension != null)
{
if (ExtensionToType.ContainsKey(f.Extension))
{
foreach (var type in ExtensionToType[f.Extension])
{
IFormat format = Activator.CreateInstance(type) as IFormat;
if (format.Verify(f) && format.CanOpen)
{
format.Open(f);
return(format);
}
}
}
}
// check verify
foreach (var type in AllTypes)
{
IFormat format = Activator.CreateInstance(type) as IFormat;
if (format.Verify(f) && format.CanOpen)
{
format.Open(f);
return(format);
}
}
// not supported
return(null);
}