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