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Annotation of researchv10dc/cmd/bison/getargs.c, revision 1.1.1.1

1.1       root        1: /* Parse command line arguments for bison,
                      2:    Copyright (C) 1984, 1986 Bob Corbett and Free Software Foundation, Inc.
                      3: 
                      4: BISON is distributed in the hope that it will be useful, but WITHOUT ANY
                      5: WARRANTY.  No author or distributor accepts responsibility to anyone
                      6: for the consequences of using it or for whether it serves any
                      7: particular purpose or works at all, unless he says so in writing.
                      8: Refer to the BISON General Public License for full details.
                      9: 
                     10: Everyone is granted permission to copy, modify and redistribute BISON,
                     11: but only under the conditions described in the BISON General Public
                     12: License.  A copy of this license is supposed to have been given to you
                     13: along with BISON so you can know your rights and responsibilities.  It
                     14: should be in a file named COPYING.  Among other things, the copyright
                     15: notice and this notice must be preserved on all copies.
                     16: 
                     17:  In other words, you are welcome to use, share and improve this program.
                     18:  You are forbidden to forbid anyone else to use, share and improve
                     19:  what you give them.   Help stamp out software-hoarding!  */
                     20: 
                     21: #include <stdio.h>
                     22: #include "files.h"
                     23: 
                     24: int verboseflag;
                     25: int definesflag;
                     26: extern int fixed_outfiles;/* JF */
                     27: 
                     28: 
                     29: getargs(argc, argv)
                     30: int argc;
                     31: char *argv[];
                     32: {
                     33:   register int c;
                     34:   char *p = argv[0];
                     35:   char *lastcomponent;
                     36: 
                     37:   extern int optind;
                     38:   extern char *optarg;
                     39: 
                     40:   verboseflag = 0;
                     41:   definesflag = 0;
                     42:   fixed_outfiles = 0;
                     43: 
                     44:   /* See if the program was invoked as "yacc".  */
                     45: 
                     46:   lastcomponent = p;
                     47:   while (*p)
                     48:     {
                     49:       if (*p == '/')
                     50:        lastcomponent = p + 1;
                     51:       p++;
                     52:     }
                     53:   if (! strcmp (lastcomponent, "yacc"))
                     54:     /* If so, pretend we have "-y" as argument.  */
                     55:     fixed_outfiles = 1;
                     56: 
                     57:   while ((c = getopt (argc, argv, "yYvVdDo:O:")) != EOF)
                     58:     switch (c)
                     59:       {
                     60:       case 'y':
                     61:       case 'Y':
                     62:        fixed_outfiles = 1;
                     63:        break;
                     64: 
                     65:       case 'v':
                     66:       case 'V':
                     67:        verboseflag = 1;
                     68:        break;
                     69: 
                     70:       case 'd':
                     71:       case 'D':
                     72:        definesflag = 1;
                     73:        break;
                     74: 
                     75:       case 'o':
                     76:       case 'O':
                     77:        spec_outfile = optarg;
                     78:       }
                     79: 
                     80:   if (optind == argc)
                     81:     fatal("grammar file not specified");
                     82:   else
                     83:     infile = argv[optind];
                     84: 
                     85:   if (optind < argc - 1)
                     86:     fprintf(stderr, "bison: warning: extra arguments ignored\n");
                     87: }

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