function args_out = subs_arg(args,Args)
% subs_arg - substitutes arguments into args from Args
% FS defaults to `;'.
%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %%%%% Model Transformation Tools %%%%%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Matlab function subs_arg.m
% args = subs_arg(args,Args)
% Copyright (c) P.J. Gawthrop, 1996.
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% $Id$
% %% $Log$
% %% Revision 1.1 1996/12/04 21:46:52 peterg
% %% Initial revision
% %%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Symbolic argument sign
S = '$';
args_out = '';
if strcmp(args,'')==0
L = length(args);
args_count = 1;
num_count=0;
while args_count <= L
ch = str2ch(args,args_count);
if ch~=S % copy character
args_out = [args_out, ch];
args_count = args_count+1;
else % find argument number
args_count = args_count+1;
ch = str2ch(args,args_count);
i=0;
while (ch>='0') & (ch<='9')
i = 10*i + abs(ch)-abs('0');
if args_count==L
args_count = args_count+1;
break
end;
args_count = args_count+1;
ch = str2ch(args,args_count);
end;
args_out = [args_out, args2arg(Args,i)];
end;
end;
end;