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~cf:c~bf:f~bc".
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;
85 t_complementaly complementaly[sizeof(flags) * 8 + 1];
87 const unsigned char *s;
88 t_complementaly *on_off;
91 va_start (p, applet_opts);
93 /* skip GNU extension */
95 if(*s == '+' || *s == '-')
99 on_off = complementaly;
101 if(c >= (sizeof(flags)*8))
104 on_off->switch_on = (1 << c);
105 on_off->list_flg = 0;
106 on_off->switch_off = 0;
107 on_off->incongruously = 0;
108 on_off->optarg = NULL;
110 on_off->optarg = va_arg (p, void **);
120 for (s = bb_opt_complementaly; s && *s; s++) {
121 t_complementaly *pair;
129 for (on_off = complementaly; on_off->opt; on_off++)
130 if (on_off->opt == *s)
133 for(s++; *s && *s != ':'; s++) {
134 if (*s == '-' || *s == '~') {
136 } else if(*s == '*') {
139 unsigned long *pair_switch = &(pair->switch_on);
142 pair_switch = c == '-' ? &(pair->switch_off) : &(pair->incongruously);
143 for (on_off = complementaly; on_off->opt; on_off++)
144 if (on_off->opt == *s) {
145 *pair_switch |= on_off->switch_on;
153 while ((c = getopt_long (argc, argv, applet_opts,
154 bb_applet_long_options, NULL)) > 0) {
155 for (on_off = complementaly; on_off->opt != c; on_off++) {
159 if(flags & on_off->incongruously)
160 flags |= 0x80000000UL;
161 flags &= ~on_off->switch_off;
162 flags |= on_off->switch_on;
163 if(on_off->list_flg) {
164 *(llist_t **)(on_off->optarg) =
165 llist_add_to(*(llist_t **)(on_off->optarg), optarg);
166 } else if (on_off->optarg) {
167 *(char **)(on_off->optarg) = optarg;