# [bonds,status] = abg2cbg(system_name, system_type, full_name, port_bonds, infofile)

# ###############################################################
# ## Version control history
# ###############################################################
# ## $Id$
# ## $Log$
# ## Revision 1.43  1998/12/14 15:19:36  peterg
# ## Added missing "derivative_causality," argument to recursive call of
# ## this function
# ##
# ## Revision 1.42  1998/12/03 14:55:40  peterg
# ## Now uses number of components with complete causality to measure
# ## progress of algorithm -- Done.
# ## This replaces bond count -- done.
# ##
# ## Revision 1.41  1998/11/20 10:52:28  peterg
# ## Copies port bonds if the port bonds ARE set

    status = [];
    return
  end;

# Evaluate the system function to get the bonds and number of ports
#eval(["[bonds,components,n_ports,N_ports]=", fun_name, ";"]);
  eval(["[ABG]=", fun_name, ";"]);
!struct_contains(ABG,"subsystems")
  if !struct_contains(ABG,"subsystems")# Are there any subsystems?
    return;			# Nothing to do
  else
    [n_subsystems,junk] = size(struct_elements(ABG.subsystems))
  endif
  
  if struct_contains(ABG,"portlist")# Are there any ports?
    [n_ports,junk] = size(ABG.portlist);
#     port_bond_index=zeros(n_ports,1);
    i_port = 0;
    for i=1:n_ports		# Find indices of the internal ports
      name = deblank(ABG.portlist(i,:)); # Name of this port
      eval(["port = ABG.ports.",name,";"]); # Extract port info
      for j=1:length(port.connections) # Maybe vector SS
	port_bond_index(++i_port) = abs(port.connections(j));
      endfor;
    endfor
  else
    n_ports = 0;
  endif				   

				
  [n_bonds,columns] = size(ABG.bonds);# Find number of bonds