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

% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% $Id$
% %% $Log$
% %% Revision 1.29  1998/07/10 09:01:42  peterg
% %% Added error + info file in new form
% %%
% %% Revision 1.28  1998/07/08 09:23:42  peterg
% %% Undid the previous change -- needs more thought.
% %%
% %% Revision 1.27  1998/07/03 19:03:31  peterg
% %% Always override the causality of port bonds!
% %%
% %% Revision 1.26  1998/06/27 13:24:04  peterg

  mtt_error(sprintf('%s: %1.0f port bonds incompatible with %1.0f ports', ...
               full_name, n_port_bonds, n_ports), errorfile);

  else % Copy the port bonds & status
    for j = 1:n_port_bonds
      jj = port_bond_index(j);
      for k = 1:2
#	if bonds(jj,k)==0 % only copy if not already set
	bonds(jj,k) = port_bonds(j,k);
#	end;
      end;
      status(1:n_ports) = port_status;
    end
  end
else
  n_port_bonds=0;
end;

while( ci_index>0)
  ci_index
  old_done = inf;
  % Inner loop propagates causality
  while done~=old_done
   % disp(sprintf('Causality is %3.0f%s complete.', done, pc));
    old_done = done;
done,ci_index  
    for i = n_port_bonds+1:n_components % Miss out the ports 
      if status(i) ~= 0 % only do this if causality not yet complete

	% Get the bonds on this component
	comp = nozeros(components(i,:));
	bond_list = abs(comp);
	direction = sign(comp)'*[1 1];

	    status(i) = 1;
	  else           % no component is overcausal but some are undercausal
	    status(i) = -1;
	  end;
	end;

      else % its a simple component -- or explicit causality defined
#	disp(['---', name, ' (', cause_name, ') ---']);
#	comp_bonds_in = comp_bonds

	% Convert from arrow orientated to component orientated causality
	comp_bonds = comp_bonds.*direction;
	
        % Evaluate the built-in causality procedure
	eval([ '[comp_bonds,status(i)] = ', cause_name, '(comp_bonds);' ]);

        % and convert from component orientated to arrow orientated causality
        comp_bonds = comp_bonds.*direction; 
       
#       comp_bonds_out = comp_bonds
      end;
      
      % Update the full bonds list
      bonds(bond_list,:) = comp_bonds;
    end;
    end;
    
    done = sum(sum(abs(bonds)))/total*100;
    %disp(sprintf('Causality is %3.0f%s complete.', done, pc), infofile));
    
  end;
  
  % Set causality of a C or I which is not already set
  [ci_index,prefered] = getdynamic(status,system_type)
  if ci_index>0
    disp('Set causality of a C or I which is not already set')
    ci_bond_index = nozeros(components(ci_index,:)); # Get all bonds
    ci_direction = sign(ci_bond_index);
    ci_bond_index = abs(ci_bond_index);
    bonds(ci_bond_index,1:2) = prefered*ci_direction'*[1 1];
  end;
  
end;

% Print final causality
final_done =  (sum(status==zeros(n_components,1))/n_components)*100;

if at_top_level
  mtt_info(sprintf('Final causality of %s is %3.0f%s complete.', ...
      full_name, final_done, pc), infofile);

  if final_done<100
	  mtt_error(sprintf("Unable to complete causality"),errorfile);
  end;
 
  % List overcausal bonds
  [over_causal_bonds,n] = getindex(status,1);
  if n>0
    for i=over_causal_bonds'