| /* getopt.c provide access to the C getopt library. |
| |
| Copyright (C) 2017-2023 Free Software Foundation, Inc. |
| Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>. |
| |
| This file is part of GNU Modula-2. |
| |
| GNU Modula-2 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, or (at your option) |
| any later version. |
| |
| GNU Modula-2 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. |
| |
| Under Section 7 of GPL version 3, you are granted additional |
| permissions described in the GCC Runtime Library Exception, version |
| 3.1, as published by the Free Software Foundation. |
| |
| You should have received a copy of the GNU General Public License and |
| a copy of the GCC Runtime Library Exception along with this program; |
| see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include "config.h" |
| #include "system.h" |
| #include "ansi-decl.h" |
| |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| |
| char *cgetopt_optarg; |
| int cgetopt_optind; |
| int cgetopt_opterr; |
| int cgetopt_optopt; |
| |
| |
| char |
| cgetopt_getopt (int argc, char *argv[], char *optstring) |
| { |
| char r = getopt (argc, argv, optstring); |
| |
| cgetopt_optarg = optarg; |
| cgetopt_optind = optind; |
| cgetopt_opterr = opterr; |
| cgetopt_optopt = optopt; |
| |
| if (r == (char)-1) |
| return (char)0; |
| return r; |
| } |
| |
| |
| int |
| cgetopt_cgetopt_long (int argc, char *argv[], char *optstring, const struct option *longopts, |
| int *longindex) |
| { |
| int r = cgetopt_long (argc, argv, optstring, longopts, longindex); |
| |
| cgetopt_optarg = optarg; |
| cgetopt_optind = optind; |
| cgetopt_opterr = opterr; |
| cgetopt_optopt = optopt; |
| |
| return r; |
| } |
| |
| |
| int |
| cgetopt_cgetopt_long_only (int argc, char *argv[], char *optstring, |
| const struct option *longopts, int *longindex) |
| { |
| int r = cgetopt_long_only (argc, argv, optstring, longopts, longindex); |
| |
| cgetopt_optarg = optarg; |
| cgetopt_optind = optind; |
| cgetopt_opterr = opterr; |
| cgetopt_optopt = optopt; |
| |
| return r; |
| } |
| |
| |
| typedef struct cgetopt_Options_s { |
| struct option *cinfo; |
| unsigned int high; |
| } cgetopt_Options; |
| |
| |
| /* InitOptions a constructor for Options. */ |
| |
| cgetopt_Options * |
| cgetopt_InitOptions (void) |
| { |
| cgetopt_Options *o = (cgetopt_Options *) malloc (sizeof (cgetopt_Options)); |
| o->cinfo = (struct option *) malloc (sizeof (struct option)); |
| o->high = 0; |
| return o; |
| } |
| |
| |
| /* KillOptions a deconstructor for Options. Returns NULL after freeing |
| up all allocated memory associated with o. */ |
| |
| cgetopt_Options * |
| cgetopt_KillOptions (cgetopt_Options *o) |
| { |
| free (o->cinfo); |
| free (o); |
| return NULL; |
| } |
| |
| |
| /* SetOption set option[index] with {name, has_arg, flag, val}. */ |
| |
| void |
| cgetopt_SetOption (cgetopt_Options *o, unsigned int index, |
| char *name, unsigned int has_arg, |
| int *flag, int val) |
| { |
| if (index > o->high) |
| { |
| o->cinfo = (struct option *) malloc (sizeof (struct option) * (index + 1)); |
| o->high = index + 1; |
| } |
| o->cinfo[index].name = name; |
| o->cinfo[index].has_arg = has_arg; |
| o->cinfo[index].flag = flag; |
| o->cinfo[index].val = val; |
| } |
| |
| |
| /* GetLongOptionArray returns a pointer to the C array containing all |
| long options. */ |
| |
| struct option * |
| cgetopt_GetLongOptionArray (cgetopt_Options *o) |
| { |
| return o->cinfo; |
| } |
| |
| |
| /* GNU Modula-2 linking fodder. */ |
| |
| void |
| _M2_cgetopt_init (void) |
| { |
| } |
| |
| |
| void |
| _M2_cgetopt_finish (void) |
| { |
| } |
| |
| # ifdef __cplusplus |
| } |
| # endif |