bb_getopt_ulflags's return value will be as if "-a -b -c" were
found.
+ "ww" Adjacent double options have a counter associated which indicates
+ the number of occurances of the option.
+ For example the ps applet needs:
+ if w is given once, GNU ps sets the width to 132,
+ if w is given more than once, it is "unlimited"
+
+ int w_counter = 0;
+ bb_opt_complementally = "ww";
+ bb_getopt_ulflags(argc, argv, "w", &w_counter);
+
+ if(w_counter)
+ width = (w_counter == 1) ? 132 : INT_MAX;
+ else
+ get_terminal_width(...&width...);
+
+ w_counter is a pointer to an integer. It has to be passed to
+ bb_getopt_ulflags() after all other option argument sinks.
+ For example: accept multiple -v to indicate the level of verbosity and
+ for each -b optarg, add optarg to my_b. Finally, if b is given, turn off
+ c and vice versa:
+
+ llist_t *my_b = NULL;
+ int verbose_level = 0;
+ bb_opt_complementally = "vv:b*:b-c:c-b";
+ f = bb_getopt_ulflags(argc, argv, "vb:c", &my_b, &verbose_level);
+ if((f & 2)) // -c after -b unset this -b flag
+ while (my_b) { dosomething_with(my_b->data) ; my_b = my_b->link; }
+ if(my_b) // but llist stored always if -b found
+ free_llist(my_b);
+ if (verbose_level) bb_printf("verbose level is %d\n", verbose_level);
+
Special characters:
"-" A dash between two options causes the second of the two
if(opt & 4)
printf("Detected odd -x usaging\n");
+ "-" A minus as the first char in a bb_opt_complementally group means to
+ convert the arguments as option.
+ For example:
+
+ bb_opt_complementally = "-:w-x:x-w";
+ bb_getopt_ulflags(argc, argv, "wx");
+
+ Allows any arguments to be given without a dash (./program w x)
+ as well as with a dash (./program -x). Why unset -w see above.
+
"~" A tilde between two options, or between an option and a group
of options, means that they are mutually exclusive. Unlike
the "-" case above, an error will be forced if the options
unsigned long switch_off;
unsigned long incongruously;
void **optarg; /* char **optarg or llist_t **optarg */
+ int *counter;
} t_complementally;
/* You can set bb_applet_long_options for parse called long options */
va_list p;
const struct option *l_o;
char flg_show_usage_if_error = 0;
+ char flg_argv_is_opts = 0;
+ unsigned long trigger;
+ char **pargv = NULL;
va_start (p, applet_opts);
c = 0;
on_off = complementally;
for (; *s; s++) {
- if(c >= (sizeof(flags)*8))
+ if(c >= (int)(sizeof(flags)*8))
break;
on_off->opt = *s;
on_off->switch_on = (1 << c);
on_off->switch_off = 0;
on_off->incongruously = 0;
on_off->optarg = NULL;
+ on_off->counter = NULL;
if (s[1] == ':') {
on_off->optarg = va_arg (p, void **);
do
if(on_off->opt == l_o->val)
break;
if(on_off->opt == 0) {
- if(c >= (sizeof(flags)*8))
+ if(c >= (int)(sizeof(flags)*8))
break;
on_off->opt = l_o->val;
on_off->switch_on = (1 << c);
on_off->list_flg = 0;
on_off->switch_off = 0;
on_off->incongruously = 0;
+ on_off->counter = NULL;
if(l_o->has_arg != no_argument)
on_off->optarg = va_arg (p, void **);
else
flg_show_usage_if_error = '!';
continue;
}
+ if(*s == '-') {
+ flg_argv_is_opts = '-';
+ continue;
+ }
for (on_off = complementally; on_off->opt; on_off++)
if (on_off->opt == *s)
break;
} else if(*s == '*') {
pair->list_flg++;
} else {
- unsigned long *pair_switch = &(pair->switch_on);
- if(c)
- pair_switch = c == '-' ? &(pair->switch_off) : &(pair->incongruously);
- for (on_off = complementally; on_off->opt; on_off++)
- if (on_off->opt == *s) {
- *pair_switch |= on_off->switch_on;
- break;
- }
+ unsigned long *pair_switch = &(pair->switch_on);
+ if(c)
+ pair_switch = c == '-' ? &(pair->switch_off) : &(pair->incongruously);
+ for (on_off = complementally; on_off->opt; on_off++)
+ if (on_off->opt == *s) {
+ if(pair_switch == &(on_off->switch_on))
+ on_off->counter = va_arg (p, int *);
+ else
+ *pair_switch |= on_off->switch_on;
+ break;
+ }
}
}
s--;
while ((c = getopt_long (argc, argv, applet_opts,
bb_applet_long_options, NULL)) > 0) {
- unsigned long trigger;
+loop_arg_is_opt:
for (on_off = complementally; on_off->opt != c; on_off++) {
if(!on_off->opt)
bb_show_usage ();
flags &= ~(on_off->switch_off ^ trigger);
flags |= on_off->switch_on ^ trigger;
flags ^= trigger;
+ if(on_off->counter)
+ (*(on_off->counter))++;
if(on_off->list_flg) {
*(llist_t **)(on_off->optarg) =
- llist_add_to(*(llist_t **)(on_off->optarg), optarg);
+ llist_add_to(*(llist_t **)(on_off->optarg), optarg);
} else if (on_off->optarg) {
*(char **)(on_off->optarg) = optarg;
}
+ if(flg_argv_is_opts == 'p')
+ break;
+ }
+ if(flg_argv_is_opts) {
+ /* process argv is option, for example "ps" applet */
+ if(flg_argv_is_opts == '-') {
+ flg_argv_is_opts = 'p';
+ pargv = argv + optind;
+ }
+ while(*pargv) {
+ c = **pargv;
+ if(c == '\0') {
+ pargv++;
+ } else {
+ (*pargv)++;
+ goto loop_arg_is_opt;
+ }
+ }
}
return flags;
projects / oweals / busybox.git / blobdiff