util/ncgg/main.c

   1 /*
   2  * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
   3  * See the copyright notice in the ACK home directory, in the file "Copyright".
   4  */
   5 #ifndef NORCSID
   6 static char rcsid[]= "$Id: main.c,v 0.6 1994/06/24 10:37:46 ceriel Exp $";
   7 #endif
   8
   9 #include <stdio.h>
  10
  11 char *filename;
  12 char *beg_sbrk;
  13 extern char *sbrk();
  14
  15 main(argc,argv) char **argv; {
  16         extern int nerrors;
  17         extern int code_in_c;
  18         extern int tabledebug;
  19         extern int verbose;
  20
  21         beg_sbrk = sbrk(0);
  22
  23         while (argc >1 && argv[1][0]=='-') {
  24                 switch(argv[1][1]) {
  25                 case 'c':
  26                         code_in_c = 0;
  27                         break;
  28                 case 'd':
  29                         tabledebug++;
  30                         break;
  31                 case 'v':
  32                         verbose++;
  33                         break;
  34                 default:
  35                         error("Unknown flag -%c",argv[1][1]);
  36                 }
  37                 argc--; argv++;
  38         }
  39         if (argc==2) {
  40                 if (freopen(argv[1],"r",stdin)==NULL) {
  41                         error("Can't open %s",argv[1]);
  42                         exit(-1);
  43                 }
  44                 filename = argv[1];
  45         }
  46         else if (argc == 1) {
  47                 filename = "";
  48         } else
  49                 error("Usage: %s [-c] [-d] [-v] [table]",argv[0]);
  50         initemhash();
  51         enterkeyw();
  52         initnodes();
  53         initio();
  54         yyparse();
  55         if (nerrors==0) {
  56                 finishio();
  57                 statistics();
  58                 if (verbose)
  59                         hallverbose();
  60         } else {
  61                 errorexit();
  62         }
  63         exit(nerrors==0 ? 0 : -1);
  64 }