| 1 | /* MI Command Set - MI Option Parser. |
| 2 | Copyright (C) 2000-2015 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 3 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, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include "defs.h" |
| 21 | #include "mi-getopt.h" |
| 22 | /* See comments about mi_getopt and mi_getopt_silent in mi-getopt.h. |
| 23 | When there is an unknown option, if ERROR_ON_UNKNOWN is true, |
| 24 | throw an error, otherwise return -1. */ |
| 25 | |
| 26 | static int |
| 27 | mi_getopt_1 (const char *prefix, int argc, char **argv, |
| 28 | const struct mi_opt *opts, int *oind, char **oarg, |
| 29 | int error_on_unknown) |
| 30 | { |
| 31 | char *arg; |
| 32 | const struct mi_opt *opt; |
| 33 | |
| 34 | /* We assume that argv/argc are ok. */ |
| 35 | if (*oind > argc || *oind < 0) |
| 36 | internal_error (__FILE__, __LINE__, |
| 37 | _("mi_getopt_long: oind out of bounds")); |
| 38 | if (*oind == argc) |
| 39 | return -1; |
| 40 | arg = argv[*oind]; |
| 41 | /* ``--''? */ |
| 42 | if (strcmp (arg, "--") == 0) |
| 43 | { |
| 44 | *oind += 1; |
| 45 | *oarg = NULL; |
| 46 | return -1; |
| 47 | } |
| 48 | /* End of option list. */ |
| 49 | if (arg[0] != '-') |
| 50 | { |
| 51 | *oarg = 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 oarg option. */ |
| 62 | if (argc < *oind + 2) |
| 63 | error (_("%s: Option %s requires an argument"), prefix, arg); |
| 64 | *oarg = argv[(*oind) + 1]; |
| 65 | *oind = (*oind) + 2; |
| 66 | return opt->index; |
| 67 | } |
| 68 | else |
| 69 | { |
| 70 | *oarg = NULL; |
| 71 | *oind = (*oind) + 1; |
| 72 | return opt->index; |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | if (error_on_unknown) |
| 77 | error (_("%s: Unknown option ``%s''"), prefix, arg + 1); |
| 78 | else |
| 79 | return -1; |
| 80 | } |
| 81 | |
| 82 | int |
| 83 | mi_getopt (const char *prefix, |
| 84 | int argc, char **argv, |
| 85 | const struct mi_opt *opts, |
| 86 | int *oind, char **oarg) |
| 87 | { |
| 88 | return mi_getopt_1 (prefix, argc, argv, opts, oind, oarg, 1); |
| 89 | } |
| 90 | |
| 91 | int |
| 92 | mi_getopt_allow_unknown (const char *prefix, int argc, char **argv, |
| 93 | const struct mi_opt *opts, int *oind, char **oarg) |
| 94 | { |
| 95 | return mi_getopt_1 (prefix, argc, argv, opts, oind, oarg, 0); |
| 96 | } |
| 97 | |
| 98 | int |
| 99 | mi_valid_noargs (const char *prefix, int argc, char **argv) |
| 100 | { |
| 101 | int oind = 0; |
| 102 | char *oarg; |
| 103 | static const struct mi_opt opts[] = |
| 104 | { |
| 105 | { 0, 0, 0 } |
| 106 | }; |
| 107 | |
| 108 | if (mi_getopt (prefix, argc, argv, opts, &oind, &oarg) == -1) |
| 109 | return 1; |
| 110 | else |
| 111 | return 0; |
| 112 | } |