Interfacing function
eng

##
TOWS_c

### File content

    //19 sept 2007 - INRIA - Author : A.Layec
    function [x,y,typ]=TOWS_c(job,arg1,arg2)
    x=[];y=[];typ=[]
    select job
    case 'plot' then
      standard_draw(arg1)
    case 'getinputs' then
      [x,y,typ]=standard_inputs(arg1)
    case 'getoutputs' then
      [x,y,typ]=standard_outputs(arg1)
    case 'getorigin' then
      [x,y]=standard_origin(arg1)
    case 'set' then
       x=arg1;
       graphics=arg1.graphics;model=arg1.model;
       exprs=graphics.exprs;

       while %t do
          [ok,nz,varnam,herit,exprs]=getvalue('Set Scicos buffer block',...
          ['Size of buffer';
           'Scilab variable name';
           'Inherit (no:0, yes:1)'],...
          list('vec',1,'str',1,'vec',1),exprs);

          if ~ok then break,end;

          if(nz<=0) then
            message("Size of buffer must be positive");
            ok=%f
          end

          //check for valid name variable
          r=%f;
          ierr=execstr('r=validvar(varnam)','errcatch')
          if ~r then
            message(["Invalid variable name.";
                     "Please choose another variable name."]);
            ok=%f
          end

          if ok then
            [model,graphics,ok]=set_io(model,graphics,...
                                       list([-1,1],-1),list(),...
                                       ones(1-herit,1),[])

            model.ipar=[nz;length(varnam);str2code(varnam)]
            graphics.id=string(varnam)
            graphics.exprs=exprs
            x.graphics=graphics;
            x.model=model;
            break
          end
       end

    case 'define' then
      nu=-1
      nz=128
      varnam='A'
      herit=0

      model=scicos_model();
      model.sim=list('tows_c',4);
      model.in=[nu];
      model.in2=1;
      model.intyp=-1;
      model.out=[];
      model.evtin=[1];
      model.evtout=[];
      model.rpar=[];
      model.ipar=[nz;length(varnam);str2code(varnam)];
      model.blocktype='d';
      model.firing=[];
      model.dep_ut=[%f %f];

      gr_i=['txt=[''To workspace''];';
        'xstringb(orig(1),orig(2),txt,sz(1),sz(2),''fill'');']
      exprs=[string(nz),string(varnam),string(herit)]
      x=standard_define([3.5 2],model,exprs,gr_i)
    end
    endfunction