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/* MI Command Set - MI Option Parser.
Copyright (C) 2000-2017 Free Software Foundation, Inc.
Contributed by Cygnus Solutions (a Red Hat company).
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "mi-getopt.h"
/* See comments about mi_getopt and mi_getopt_silent in mi-getopt.h.
When there is an unknown option, if ERROR_ON_UNKNOWN is true,
throw an error, otherwise return -1. */
static int
mi_getopt_1 (const char *prefix, int argc, char **argv,
const struct mi_opt *opts, int *oind, char **oarg,
int error_on_unknown)
{
char *arg;
const struct mi_opt *opt;
/* We assume that argv/argc are ok. */
if (*oind > argc || *oind < 0)
internal_error (__FILE__, __LINE__,
_("mi_getopt_long: oind out of bounds"));
if (*oind == argc)
return -1;
arg = argv[*oind];
/* ``--''? */
if (strcmp (arg, "--") == 0)
{
*oind += 1;
*oarg = NULL;
return -1;
}
/* End of option list. */
if (arg[0] != '-')
{
*oarg = NULL;
return -1;
}
/* Look the option up. */
for (opt = opts; opt->name != NULL; opt++)
{
if (strcmp (opt->name, arg + 1) != 0)
continue;
if (opt->arg_p)
{
/* A non-simple oarg option. */
if (argc < *oind + 2)
error (_("%s: Option %s requires an argument"), prefix, arg);
*oarg = argv[(*oind) + 1];
*oind = (*oind) + 2;
return opt->index;
}
else
{
*oarg = NULL;
*oind = (*oind) + 1;
return opt->index;
}
}
if (error_on_unknown)
error (_("%s: Unknown option ``%s''"), prefix, arg + 1);
else
return -1;
}
int
mi_getopt (const char *prefix,
int argc, char **argv,
const struct mi_opt *opts,
int *oind, char **oarg)
{
return mi_getopt_1 (prefix, argc, argv, opts, oind, oarg, 1);
}
int
mi_getopt_allow_unknown (const char *prefix, int argc, char **argv,
const struct mi_opt *opts, int *oind, char **oarg)
{
return mi_getopt_1 (prefix, argc, argv, opts, oind, oarg, 0);
}
int
mi_valid_noargs (const char *prefix, int argc, char **argv)
{
int oind = 0;
char *oarg;
static const struct mi_opt opts[] =
{
{ 0, 0, 0 }
};
if (mi_getopt (prefix, argc, argv, opts, &oind, &oarg) == -1)
return 1;
else
return 0;
}
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