optimize_gcode_mmu.awk 
#!/bin/awk -f

BEGIN {
   hottemp=205
   delta=15
   nbgcodebefore=5
   posgcodewipe=4

   coldtemp=hottemp-delta
   nbchange=0
   purgestate=0
   nbgcodewipe=4
   curposwipe=0
}
{
  if ( $1 == "M104" ) {
     hottemp=int(substr($2,2));
     coldtemp=hottemp-delta;
     printf(";Update temperature printing:%s Cold:%s\n",hottemp,coldtemp);

  }
  if ( $1 ~ /^T[0-9]$/ && nbchange > 0) {
      printf("M104 S%s\n",hottemp)
      print $0;
      next;
  } 
  if ( $0 == "; CP TOOLCHANGE UNLOAD"  ){
     nbchange++;
     printf("; Change numero:%s\n",nbchange);
     if ( nbchange > 0 ) {
         printf("M104 S%s\n",coldtemp);
     };
     print($0)
     next;
  }
  if ( $0 == "; CP TOOLCHANGE WIPE") {
     purgestats=1;
     print($0);
     next; 
  }
  if ( $0 == "; CP TOOLCHANGE END") {
     purgestats=0;
     nbgcodewipe=curposwipe
     if ( nbgcodewipe > nbgcodebefore ) {
         posgcodewipe=nbgcodewipe-nbgcodebefore
     }
     curposwipe=0;
     print($0);
     next;
  }

  if ( purgestats == 1 && nbchange > 0 ) {
     if ( $1 == "G1") { 
        curposwipe++;
        if ( curposwipe == posgcodewipe ) {
            if ( nbchange < 20 ) {
               printf("M300 S800 P350\nM109 S%s\nM300 S1000 P200\n",hottemp) ;
            } else {
               printf("M109 S%s\n",hottemp) ;
            }
            print($0)
            next;
        }        
     }
  }
  print($0)
}        # Loop section
END{}     # End section