1/* MI Command Set - MI Option Parser.
2   Copyright 2000, 2001 Free Software Foundation, Inc.
3   Contributed by Cygnus Solutions (a Red Hat company).
4
5   This file is part of GDB.
6
7   This program is free software; you can redistribute it and/or modify
8   it under the terms of the GNU General Public License as published by
9   the Free Software Foundation; either version 2 of the License, or
10   (at your option) any later version.
11
12   This program is distributed in the hope that it will be useful,
13   but WITHOUT ANY WARRANTY; without even the implied warranty of
14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15   GNU General Public License for more details.
16
17   You should have received a copy of the GNU General Public License
18   along with this program; if not, write to the Free Software
19   Foundation, Inc., 59 Temple Place - Suite 330,
20   Boston, MA 02111-1307, USA.  */
21
22#include "defs.h"
23#include "mi-getopt.h"
24#include "gdb_string.h"
25
26int
27mi_getopt (const char *prefix,
28	   int argc, char **argv,
29	   struct mi_opt *opts,
30	   int *optind, char **optarg)
31{
32  char *arg;
33  struct mi_opt *opt;
34  /* We assume that argv/argc are ok. */
35  if (*optind > argc || *optind < 0)
36    internal_error (__FILE__, __LINE__,
37		    "mi_getopt_long: optind out of bounds");
38  if (*optind == argc)
39    return -1;
40  arg = argv[*optind];
41  /* ``--''? */
42  if (strcmp (arg, "--") == 0)
43    {
44      *optind += 1;
45      *optarg = NULL;
46      return -1;
47    }
48  /* End of option list. */
49  if (arg[0] != '-')
50    {
51      *optarg = NULL;
52      return -1;
53    }
54  /* Look the option up. */
55  for (opt = opts; opt->name != NULL; opt++)
56    {
57      if (strcmp (opt->name, arg + 1) != 0)
58	continue;
59      if (opt->arg_p)
60	{
61	  /* A non-simple optarg option. */
62	  if (argc < *optind + 2)
63	    error ("%s: Option %s requires an argument", prefix, arg);
64	  *optarg = argv[(*optind) + 1];
65	  *optind = (*optind) + 2;
66	  return opt->index;
67	}
68      else
69	{
70	  *optarg = NULL;
71	  *optind = (*optind) + 1;
72	  return opt->index;
73	}
74    }
75  error ("%s: Unknown option ``%s''", prefix, arg + 1);
76}
77
78int
79mi_valid_noargs (const char *prefix, int argc, char **argv)
80{
81  int optind = 0;
82  char *optarg;
83  static struct mi_opt opts[] =
84  {
85    0
86  };
87
88  if (mi_getopt (prefix, argc, argv, opts, &optind, &optarg) == -1)
89    return 1;
90  else
91    return 0;
92}
93