function ports = comp_ports(comp_type,N)
%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %%%%% Model Transformation Tools %%%%%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Matlab function comp_ports
% ports = comp_ports(comp_type)
% Returns the port list for simple components
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% $Id$
% %% $Log$
% %% Revision 1.5 1998/04/12 15:01:53 peterg
% %% Converted to uniform port notation - always use []
% %%
% %% Revision 1.4 1998/03/31 08:39:31 peterg
% %% Added EBTF
% %%
% %% Revision 1.3 1997/11/21 11:32:57 peterg
% %% N ports numbered 1..N
% %%
% %% Revision 1.2 1997/08/28 08:08:24 peterg
% %% Added RS component to the two-port list
% %%
% %% Revision 1.1 1997/08/02 19:35:47 peterg
% %% Initial revision
% %%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
junctions = '-zero-one-';
one_ports = '-SS-';
two_ports = '-TF-GY-AE-AF-FMR-RS-EBTF-';
N_ports = '-R-C-I-';
comp_type = ['-', comp_type, '-'];
if length(findstr(comp_type,junctions))==1
ports = ['[undefined]'];
elseif length(findstr(comp_type,one_ports))==1
ports = ['[in]'];
elseif length(findstr(comp_type,two_ports))==1
ports = ['[in]';'[out]'];
elseif length(findstr(comp_type,'[-EMTF-]'))==1
ports = ['[in]';'[out]';'[mod]'];
elseif length(findstr(comp_type,'[-FP-]'))==1
ports = ['[e]';'[s]'];
elseif length(findstr(comp_type,'[-PS-]'))==1
ports = ['[in]';'[out]';'[power]'];
elseif length(findstr(comp_type,N_ports))==1
if N==1
ports = ['[in]'];
elseif N==2
ports = ['[in]';'[out]'];
elseif N>2
ports = '[1]';
for i=2:N
ports = [ports; sprintf("[%i]",i)];
end;
end;
end;