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