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\n\
  73 Report bugs to bug-bison@gnu.org\n"),
  74            program_name);
  75 }
  76
  77 void
  78 getargs(argc, argv)
  79      int argc;
  80      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", 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 }