1 /* MI Command Set - MI Option Parser. 2 Copyright (C) 2000-2001, 2007-2012 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 #include "gdb_string.h" 23 24 int 25 mi_getopt (const char *prefix, 26 int argc, char **argv, 27 const struct mi_opt *opts, 28 int *optind, char **optarg) 29 { 30 char *arg; 31 const struct mi_opt *opt; 32 33 /* We assume that argv/argc are ok. */ 34 if (*optind > argc || *optind < 0) 35 internal_error (__FILE__, __LINE__, 36 _("mi_getopt_long: optind out of bounds")); 37 if (*optind == argc) 38 return -1; 39 arg = argv[*optind]; 40 /* ``--''? */ 41 if (strcmp (arg, "--") == 0) 42 { 43 *optind += 1; 44 *optarg = NULL; 45 return -1; 46 } 47 /* End of option list. */ 48 if (arg[0] != '-') 49 { 50 *optarg = NULL; 51 return -1; 52 } 53 /* Look the option up. */ 54 for (opt = opts; opt->name != NULL; opt++) 55 { 56 if (strcmp (opt->name, arg + 1) != 0) 57 continue; 58 if (opt->arg_p) 59 { 60 /* A non-simple optarg option. */ 61 if (argc < *optind + 2) 62 error (_("%s: Option %s requires an argument"), prefix, arg); 63 *optarg = argv[(*optind) + 1]; 64 *optind = (*optind) + 2; 65 return opt->index; 66 } 67 else 68 { 69 *optarg = NULL; 70 *optind = (*optind) + 1; 71 return opt->index; 72 } 73 } 74 error (_("%s: Unknown option ``%s''"), prefix, arg + 1); 75 } 76 77 int 78 mi_valid_noargs (const char *prefix, int argc, char **argv) 79 { 80 int optind = 0; 81 char *optarg; 82 static const struct mi_opt opts[] = 83 { 84 { 0, 0, 0 } 85 }; 86 87 if (mi_getopt (prefix, argc, argv, opts, &optind, &optarg) == -1) 88 return 1; 89 else 90 return 0; 91 } 92