src/getargs.c

   1 /* Parse command line arguments for bison,
   2    Copyright (C) 1984, 1986, 1989, 1992 Free Software Foundation, Inc.
   3
   4 This file is part of Bison, the GNU Compiler Compiler.
   5
   6 Bison is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 Bison is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with Bison; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20
  21 #include <stdio.h>
  22 #include "getopt.h"
  23 #include "system.h"
  24 #include "files.h"
  25
  26 int verboseflag;
  27 int definesflag;
  28 int debugflag;
  29 int nolinesflag;
  30 int noparserflag = 0;
  31 int toknumflag = 0;
  32 int rawtoknumflag = 0;
  33 char *spec_name_prefix; /* for -p.  */
  34 char *spec_file_prefix; /* for -b. */
  35 extern int fixed_outfiles;/* for -y */
  36
  37 extern char *program_name;
  38 extern char *version_string;
  39
  40 extern void warns();    /* main.c */
  41
  42 struct option longopts[] =
  43 {
  44   {"debug", 0, &debugflag, 1},
  45   {"defines", 0, &definesflag, 1},
  46   {"file-prefix", 1, 0, 'b'},
  47   {"fixed-output-files", 0, &fixed_outfiles, 1},
  48   {"help", 0, 0, 'h'},
  49   {"name-prefix", 1, 0, 'p'}, /* was 'a';  apparently unused -wjh */
  50   {"no-lines", 0, &nolinesflag, 1},
  51   {"no-parser", 0, &noparserflag, 1},
  52   {"output", 1, 0, 'o'},
  53   {"output-file", 1, 0, 'o'},
  54   {"raw", 0, &rawtoknumflag, 1},
  55   {"token-table", 0, &toknumflag, 1},
  56   {"verbose", 0, &verboseflag, 1},
  57   {"version", 0, 0, 'V'},
  58   {"yacc", 0, &fixed_outfiles, 1},
  59   {0, 0, 0, 0}
  60 };
  61
  62 void
  63 usage (stream)
  64      FILE *stream;
  65 {
  66   fprintf (stream, "\
  67 Usage: %s [-dhklntvyV] [-b file-prefix] [-o outfile] [-p name-prefix]\n\
  68        [--debug] [--defines] [--fixed-output-files] [--no-lines]\n\
  69        [--verbose] [--version] [--help] [--yacc]\n\
  70        [--no-parser] [--token-table]\n\
  71        [--file-prefix=prefix] [--name-prefix=prefix]\n\
  72        [--output=outfile] grammar-file\n",
  73            program_name);
  74 }
  75
  76 void
  77 getargs(argc, argv)
  78      int argc;
  79      char *argv[];
  80 {
  81   register int c;
  82
  83   verboseflag = 0;
  84   definesflag = 0;
  85   debugflag = 0;
  86   noparserflag = 0;
  87   rawtoknumflag = 0;
  88   toknumflag = 0;
  89   fixed_outfiles = 0;
  90
  91   while ((c = getopt_long (argc, argv, "yvdhrltknVo:b:p:", longopts, (int *)0))
  92          != EOF)
  93     {
  94       switch (c)
  95         {
  96         case 0:
  97           /* Certain long options cause getopt_long to return 0.  */
  98           break;
  99
 100         case 'y':
 101           fixed_outfiles = 1;
 102           break;
 103
 104         case 'h':
 105           usage (stdout);
 106           exit (0);
 107
 108         case 'V':
 109           printf ("%s", version_string);
 110           exit (0);
 111
 112         case 'v':
 113           verboseflag = 1;
 114           break;
 115
 116         case 'd':
 117           definesflag = 1;
 118           break;
 119
 120         case 'l':
 121           nolinesflag = 1;
 122           break;
 123
 124         case 'k':
 125           toknumflag = 1;
 126           break;
 127
 128         case 'r':
 129           rawtoknumflag = 1;
 130           break;
 131
 132         case 'n':
 133           noparserflag = 1;
 134           break;
 135
 136         case 't':
 137           debugflag = 1;
 138           break;
 139
 140         case 'o':
 141           spec_outfile = optarg;
 142           break;
 143
 144         case 'b':
 145           spec_file_prefix = optarg;
 146           break;
 147
 148         case 'p':
 149           spec_name_prefix = optarg;
 150           break;
 151
 152         default:
 153           usage (stderr);
 154           exit (1);
 155         }
 156     }
 157
 158   if (optind == argc)
 159     {
 160       fprintf(stderr, "%s: no grammar file given\n", program_name);
 161       exit(1);
 162     }
 163   if (optind < argc - 1)
 164     fprintf(stderr, "%s: extra arguments ignored after '%s'\n",
 165                 program_name, argv[optind]);
 166
 167   infile = argv[optind];
 168 }