1 /* vi: set sw=4 ts=4: */
3 * universal getopt_ulflags implementation for busybox
5 * Copyright (C) 2003 Vladimir Oleynik <dzo@simtreas.ru>
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 2 of the License, or
10 * (at your option) any later version.
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 GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30 You can set bb_opt_complementaly as string with one or more
31 complementaly or incongruously options.
32 If sequential founded option haved from this string
33 then your incongruously pairs unsets and complementaly make add sets.
35 one char - option for check,
36 chars - complementaly option for add sets.
37 - chars - option triggered for unsets.
38 ~ chars - option incongruously.
39 * - option list, called add_to_list(*ptr_from_usaged, optarg)
41 Example: du applet can have options "-s" and "-d size"
42 If getopt found -s then -d option flag unset or if found -d then -s unset.
43 For this result you must set bb_opt_complementaly = "s-d:d-s".
44 Result have last option flag only from called arguments.
45 Warning! You can check returned flag, pointer to "d:" argument seted
47 Example two: cut applet must only one type of list may be specified,
48 and -b, -c and -f incongruously option, overwited option is error also.
49 You must set bb_opt_complementaly = "b~bcf:c~bcf:f~bcf".
50 If called have more one specified, return value have error flag -
51 high bite set (0x80000000UL).
52 Example three: grep applet can have one or more "-e pattern" arguments.
53 You should use bb_getopt_ulflags() as
55 bb_opt_complementaly = "e*";
56 bb_getopt_ulflags (argc, argv, "e:", &paterns);
59 const char *bb_opt_complementaly;
65 unsigned long switch_on;
66 unsigned long switch_off;
67 unsigned long incongruously;
68 void **optarg; /* char **optarg or llist_t **optarg */
71 /* You can set bb_applet_long_options for parse called long options */
73 static const struct option bb_default_long_options[] = {
74 /* { "help", 0, NULL, '?' }, */
78 const struct option *bb_applet_long_options = bb_default_long_options;
82 bb_getopt_ulflags (int argc, char **argv, const char *applet_opts, ...)
84 unsigned long flags = 0;
87 t_complementaly *complementaly;
88 t_complementaly *on_off;
91 va_start (p, applet_opts);
93 for (s = applet_opts; *s; s++) {
96 /* check GNU extension "o::" - optional arg */
100 complementaly = xcalloc (c + 1, sizeof (t_complementaly));
102 for (s = applet_opts; *s; s++) {
103 complementaly->opt = *s;
104 complementaly->switch_on |= (1 << c);
107 complementaly->optarg = va_arg (p, void **);
114 complementaly->opt = 0;
117 for (s = bb_opt_complementaly; s && *s; s++) {
118 t_complementaly *pair;
126 for (on_off = complementaly; on_off->opt; on_off++)
127 if (on_off->opt == *s)
130 for(s++; *s && *s != ':'; s++) {
131 if (*s == '-' || *s == '~') {
133 } else if(*s == '*') {
136 unsigned long *pair_switch = &(pair->switch_on);
139 pair_switch = c == '-' ? &(pair->switch_off) : &(pair->incongruously);
140 for (on_off = complementaly; on_off->opt; on_off++)
141 if (on_off->opt == *s) {
142 *pair_switch |= on_off->switch_on;
150 while ((c = getopt_long (argc, argv, applet_opts,
151 bb_applet_long_options, NULL)) > 0) {
153 for (on_off = complementaly; on_off->opt != c; on_off++) {
157 if(flags & on_off->incongruously)
158 flags |= 0x80000000UL;
159 flags &= ~on_off->switch_off;
160 flags |= on_off->switch_on;
161 if(on_off->list_flg) {
162 *(llist_t **)(on_off->optarg) =
163 llist_add_to(*(llist_t **)(on_off->optarg), optarg);
164 } else if (on_off->optarg) {
165 *(char **)(on_off->optarg) = optarg;