% Acausal bond graph to causal bond graph: mfile format

% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% $Id$
% %% $Log$
% %% Revision 1.4  1996/08/08 08:30:06  peter
% %% The cbg filename contains the system name - this makes things easier
% %% when setting up the m to fig translation and m to ese translation
% %%
% %% Revision 1.3  1996/08/05 18:53:21  peter
% %% Fixed bug passing causality from subsystems.
% %%
% %% Revision 1.2  1996/08/05 15:41:41  peter
% %% Now recursively does causality on subsystems.
% %%
% %% Revision 1.1  1996/08/04 17:55:55  peter

if nargin<4
  port_bonds = [];
end;

if nargin<5
  infofile = 'stdout';
end;

% Create the (full) system name
if length(full_name)==0
  full_name = system_name;
  system_type = system_name;
else
  full_name = [full_name, '_', system_name];
end;

fun_name = [system_type, '_abg']

% If no such function - then there is nothing to be done.
if exist(fun_name)~=2
  mtt_info(['m-file ', fun_name, ' does not exist'], infofile);
  bonds = [];
  status = [];
  return
end;

% Create the (full) system name
if length(full_name)==0
  full_name = system_name;
else
  full_name = [full_name, '_', system_name];
end;

% Evaluate the system function to get the bonds
eval(['[bonds,components,n_ports]=', fun_name, ';']);

% Find number of bonds
[n_bonds,columns] = size(bonds);
if (columns ~= 2)&(n_bonds>0)
  error('Incorrect bonds matrix: must have 2 columns');

    if strcmp(comp_type,'0')
      comp_type = 'zero';
    end;
    if strcmp(comp_type,'1')
      comp_type = 'one';
    end;
    
% $$$     name
% $$$     comp_bonds
% $$$     bond_list

    % Component cuasality procedure name
    cause_name = [comp_type, '_cause'];
    
    % Invoke  the appropriate causality procedure
    if exist(cause_name)~=2 % Try a compound component
      disp('------------PUSH-----------------');
      [comp_bonds,s] = abg2cbg(name, comp_type, full_name, comp_bonds, ...