// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
{
strncpy( m_ext , extension , kMacExtensionMaxLength ) ;
m_ext[kMacExtensionMaxLength] = 0 ;
{
strncpy( m_ext , extension , kMacExtensionMaxLength ) ;
m_ext[kMacExtensionMaxLength] = 0 ;