BSD 4_1c_2 release

[unix-history] / usr / src / usr.bin / struct / main.c

#ifndef lint
static char sccsid[] = "@(#)main.c      4.1     (Berkeley)      2/11/83";
#endif not lint

#include <signal.h>
#include <stdio.h>
#include "1.defs.h"
#include "def.h"


char (*input)(), (*unput)();
FILE *outfd     = stdout;



main(argc,argv)
int argc;
char *argv[];
       {
       int anyoutput;
       int dexit();
       char *getargs();
       char input1(), unput1(), input2(), unput2();
       anyoutput = FALSE;
       getargs(argc,argv);
       if (debug == 2) debfd = stderr;
       else if (debug)
               debfd = fopen("debug1","w");

       if (signal(SIGINT, SIG_IGN) !=SIG_IGN)
               signal(SIGINT,dexit);
       prog_init();

       for (;;)
               {
               ++routnum;
               routerr = 0;

               input = input1;
               unput = unput1;
               if (!mkgraph()) break;
               if (debug) prgraph();
               if (routerr) continue;

               if (progress)fprintf(stderr,"build:\n");
               build();
               if (debug) prtree();
               if (routerr) continue;

               if (progress)fprintf(stderr,"structure:\n");
               structure();
               if (debug) prtree();
               if (routerr) continue;
               input = input2;
               unput = unput2;

               if (progress)fprintf(stderr,"output:\n");
               output();
               if (routerr) continue;
               anyoutput = TRUE;
               freegraf();
               }
       if (anyoutput)
               exit(0);
       else
               exit(1);
       }


dexit()
       {
       exit(1);
       }