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, Inc., 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21
  22 #include <stdio.h>
  23 #include "getopt.h"
  24 #include "system.h"
  25 #include "files.h"
  26
  27 int verboseflag;
  28 int definesflag;
  29 int debugflag;
  30 int nolinesflag;
  31 int noparserflag = 0;
  32 int toknumflag = 0;
  33 int rawtoknumflag = 0;
  34 char *spec_name_prefix; /* for -p.  */
  35 char *spec_file_prefix; /* for -b. */
  36 extern int fixed_outfiles;/* for -y */
  37
  38 void usage PARAMS((FILE *));
  39 void getargs PARAMS((int, char *[]));
  40
  41 extern char *program_name;
  42 extern char *version_string;
  43
  44 extern void warns PARAMS((char *, char *));     /* main.c */
  45
  46 struct option longopts[] =
  47 {
  48   {"debug", 0, &debugflag, 1},
  49   {"defines", 0, &definesflag, 1},
  50   {"file-prefix", 1, 0, 'b'},
  51   {"fixed-output-files", 0, &fixed_outfiles, 1},
  52   {"help", 0, 0, 'h'},
  53   {"name-prefix", 1, 0, 'p'}, /* was 'a';  apparently unused -wjh */
  54   {"no-lines", 0, &nolinesflag, 1},
  55   {"no-parser", 0, &noparserflag, 1},
  56   {"output", 1, 0, 'o'},
  57   {"output-file", 1, 0, 'o'},
  58   {"raw", 0, &rawtoknumflag, 1},
  59   {"token-table", 0, &toknumflag, 1},
  60   {"verbose", 0, &verboseflag, 1},
  61   {"version", 0, 0, 'V'},
  62   {"yacc", 0, &fixed_outfiles, 1},
  63   {0, 0, 0, 0}
  64 };
  65
  66 void
  67 usage (FILE *stream)
  68 {
  69   fprintf (stream, _("\
  70 Usage: %s [-dhklntvyV] [-b file-prefix] [-o outfile] [-p name-prefix]\n\
  71        [--debug] [--defines] [--fixed-output-files] [--no-lines]\n\
  72        [--verbose] [--version] [--help] [--yacc]\n\
  73        [--no-parser] [--token-table]\n\
  74        [--file-prefix=prefix] [--name-prefix=prefix]\n\
  75        [--output=outfile] grammar-file\n\n\
  76 Report bugs to bug-bison@gnu.org\n"),
  77            program_name);
  78 }
  79
  80 void
  81 getargs (int argc, char *argv[])
  82 {
  83   register int c;
  84
  85   verboseflag = 0;
  86   definesflag = 0;
  87   debugflag = 0;
  88   noparserflag = 0;
  89   rawtoknumflag = 0;
  90   toknumflag = 0;
  91   fixed_outfiles = 0;
  92
  93   while ((c = getopt_long (argc, argv, "yvdhrltknVo:b:p:", longopts, (int *)0))
  94          != EOF)
  95     {
  96       switch (c)
  97         {
  98         case 0:
  99           /* Certain long options cause getopt_long to return 0.  */
 100           break;
 101
 102         case 'y':
 103           fixed_outfiles = 1;
 104           break;
 105
 106         case 'h':
 107           usage (stdout);
 108           exit (0);
 109
 110         case 'V':
 111           printf ("%s", version_string);
 112           exit (0);
 113
 114         case 'v':
 115           verboseflag = 1;
 116           break;
 117
 118         case 'd':
 119           definesflag = 1;
 120           break;
 121
 122         case 'l':
 123           nolinesflag = 1;
 124           break;
 125
 126         case 'k':
 127           toknumflag = 1;
 128           break;
 129
 130         case 'r':
 131           rawtoknumflag = 1;
 132           break;
 133
 134         case 'n':
 135           noparserflag = 1;
 136           break;
 137
 138         case 't':
 139           debugflag = 1;
 140           break;
 141
 142         case 'o':
 143           spec_outfile = optarg;
 144           break;
 145
 146         case 'b':
 147           spec_file_prefix = optarg;
 148           break;
 149
 150         case 'p':
 151           spec_name_prefix = optarg;
 152           break;
 153
 154         default:
 155           usage (stderr);
 156           exit (1);
 157         }
 158     }
 159
 160   if (optind == argc)
 161     {
 162       fprintf(stderr, _("%s: no grammar file given\n"), program_name);
 163       exit(1);
 164     }
 165   if (optind < argc - 1)
 166     fprintf(stderr, _("%s: extra arguments ignored after '%s'\n"),
 167                 program_name, argv[optind]);
 168
 169   infile = argv[optind];
 170 }