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o import OpenXM sources

%%% 1999, 6/7 Mon.
[(parse) (ox.sm1) pushfile] extension
%%/plot.gnuplotexec (/home/nobuki/openXM/src/gnuplot-3.5beta6.347.orig/gnuplot)
%% def
[(getenv) (OpenXM_HOME)] extension /OpenXM_HOME set

%% [(gnuplot_forox)] getPathNameSm1 /plot.gnuplotexec set
[OpenXM_HOME (/bin/gnuplot_forox)] cat /plot.gnuplotexec set

(SSkan/lib/plot.sm1 for ox_sm1_gnuplot.  1999/09/03. ) message

/plotstart {
  sm1connectr
  ox.ccc 1 copy /gnuplot.ccc set
  (Your peer is set to gnuplot.ccc) message
  gnuplot.ccc $[(parse) (gnuplot.sm1) pushfile] extension $ oxsubmit 
  gnuplot.ccc $ plotstart.aux $ oxsubmit
  gnuplot.ccc $ gnuplot.pid $ oxsubmit gnuplot.ccc oxpopcmo /gnuplot.pid set
} def

/plotstart.aux {
  /peer [(oxGetPort) (localhost)] extension def
  [(sm1.socket) (close) [peer 2 get]] extension  %% close the second.
  /myport peer 1 get def
  /myportStr peer 1 get toString def
  
  (port number = ) messagen myportStr message

  [(forkExec) 
   [ plot.gnuplotexec
    [(r) myportStr] cat
   ]
   [ 3 4 << peer 0 get >> ]  %% close ox_sm1 channel, this channel.
   0
  ] extension /gnuplot.pid set
  (gnuplot.pid = ) messagen gnuplot.pid message
  
  [(sm1.socket) (accept) [peer 0 get ]] extension /gnuplot.ff2 set
  (Accepted ) messagen
  gnuplot.ff2 message 
} def


/gnuplot {
  /cccc set
  /fd gnuplot.ff2 0 get def
  [(sm1.socket) (write) [fd 
    [cccc 10 (string) dc] cat]] extension
} def

%% (plot sin(x);) gnuplot

/isAlive {
 [/in-isAlive /ans /i /nn] pushVariables
 [ [ gnuplot.ccc ([(getchild)] extension ) oxsubmit ] pop
    gnuplot.ccc oxpopcmo /gnuplot.pidList set
    gnuplot.pidList isArray {
    } {
      (getchild returns the following strange output.) message
       gnuplot.pidList message
      /gnuplot.pidList [  ] def
    } ifelse
    gnuplot.pidList length 0  eq {
      /ans 0 def
    } {
      /nn gnuplot.pidList length def
      0 1 nn 1 sub {
        /i set
        gnuplot.pidList i get gnuplot.pid eq {
           /isAlive.LLL goto
        } {
          (length of gnuplot.pidList = ) messagen gnuplot.pidList length message
          (gnuplot.pidList and gnuplot.pid are differenct) message
           i nn 1 sub eq {
             error
           } { } ifelse
        } ifelse
      } for
      /isAlive.LLL
      /ans 1 def
    } ifelse
    /arg1 ans def
  ] pop
  popVariables
  arg1
} def

/demo0 {
  (/u/nobuki/Trash/gnuplot-3.5beta6.347.orig/demo/airfoil.dem) pushfile /ff set
  ff gnuplot
} def

/rplot {
  /rplot.arg set
  isAlive {
    gnuplot.ccc [ ($ ) rplot.arg ( $) ( gnuplot )] cat oxsubmit 
  } {
    (You peer got error. Restaring gnuplot) message
     gnuplot.ccc ( plotstart.aux ) oxsubmit 
     gnuplot.ccc $ gnuplot.pid $ oxsubmit gnuplot.ccc oxpopcmo /gnuplot.pid set
    (New gnuplot.pid is ) messagen gnuplot.pid message
    (We have started new gnuplot. Try your command again.) message
  } ifelse
} def


/test0 {
  (Type in ctrl-C and gnuplot.ccc oxreset . ) message
  0 1 10000 {
   /i set
     [$plot cos(x+$ i toString $);$] cat rplot 
  } for ;
} def




$plotstart ;   (plot sin(x);) rplot$ message