/* Documentation
unsigned long
-bb_getopt_ulflags (int argc, char **argv, const char *applet_opts, ...)
+bb_getopt_ulflags(int argc, char **argv, const char *applet_opts, ...)
The command line options must be declared in const char
*applet_opts as a string of chars, for example:
(see getopt(3))
static const struct option applet_long_options[] = {
+ //name,has_arg,flag,val
{ "verbose", 0, 0, 'v' },
{ 0, 0, 0, 0 }
};
int w_counter = 0;
bb_opt_complementally = "ww";
bb_getopt_ulflags(argc, argv, "w", &w_counter);
- if(w_counter)
+ if (w_counter)
width = (w_counter == 1) ? 132 : INT_MAX;
else
get_terminal_width(...&width...);
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 unsets -b flag
- while(my_b) { dosomething_with(my_b->data); my_b = my_b->link; }
- if(my_b) // but llist is stored if -b is specified
+ if (f & 2) // -c after -b unsets -b flag
+ while (my_b) { dosomething_with(my_b->data); my_b = my_b->link; }
+ if (my_b) // but llist is stored if -b is specified
free_llist(my_b);
- if(verbose_level) bb_printf("verbose level is %d\n", verbose_level);
+ if (verbose_level) bb_printf("verbose level is %d\n", verbose_level);
Special characters:
if (flags & BB_GETOPT_ERROR)
bb_show_usage();
+ "x--x" Variation of the above, it means that -x option should occur
+ at most once.
+
"?" A "?" as the first char in a bb_opt_complementally group means:
if BB_GETOPT_ERROR is detected, don't return, call bb_show_usage
and exit instead. Next char after '?' can't be a digit.
$ id; id -u; id -g; id -ru; id -nu; id -rg; id -ng; id -rnu; id -rng
"X" A bb_opt_complementally group with just a single letter means
- that this this option is required. If more than one such group exists,
+ that this option is required. If more than one such group exists,
at least one option is required to occur (not all of them).
For example from "start-stop-daemon" applet:
bb_opt_complementally = "K:S:?K--S:S--K";
flags = bb_getopt_ulflags(argc, argv, "KS...);
-
- "x--x" give error if double or more used -x option
-
Don't forget to use ':'. For example "?322-22-23X-x-a" is interpreted as
"?3:22:-2:2-2:2-3Xa:2--x": max 3 args; count uses of '-2'; min 2 args;
if there is a '-2' option then unset '-3', '-X' and '-a'; if there is
#endif
unsigned long
-bb_getopt_ulflags (int argc, char **argv, const char *applet_opts, ...)
+bb_getopt_ulflags(int argc, char **argv, const char *applet_opts, ...)
{
unsigned long flags = 0;
unsigned long requires = 0;
#define FREE_FIRST_ARGV_IS_OPT 8
int spec_flgs = 0;
- va_start (p, applet_opts);
+ va_start(p, applet_opts);
c = 0;
on_off = complementally;
/* skip GNU extension */
s = (const unsigned char *)applet_opts;
- if(*s == '+' || *s == '-')
+ if (*s == '+' || *s == '-')
s++;
for (; *s; s++) {
- if(c >= (int)(sizeof(flags)*8))
+ if (c >= (int)(sizeof(flags)*8))
break;
on_off->opt = *s;
on_off->switch_on = (1 << c);
if (s[1] == ':') {
- on_off->optarg = va_arg (p, void **);
+ on_off->optarg = va_arg(p, void **);
do
s++;
while (s[1] == ':');
}
#if ENABLE_GETOPT_LONG
- for(l_o = bb_applet_long_options; l_o->name; l_o++) {
- if(l_o->flag)
+ for (l_o = bb_applet_long_options; l_o->name; l_o++) {
+ if (l_o->flag)
continue;
- for(on_off = complementally; on_off->opt != 0; on_off++)
- if(on_off->opt == l_o->val)
+ for (on_off = complementally; on_off->opt != 0; on_off++)
+ if (on_off->opt == l_o->val)
break;
- if(on_off->opt == 0) {
- if(c >= (int)(sizeof(flags)*8))
+ if (on_off->opt == 0) {
+ if (c >= (int)(sizeof(flags)*8))
break;
on_off->opt = l_o->val;
on_off->switch_on = (1 << c);
- if(l_o->has_arg != no_argument)
- on_off->optarg = va_arg (p, void **);
+ if (l_o->has_arg != no_argument)
+ on_off->optarg = va_arg(p, void **);
c++;
}
}
if (*s == ':')
continue;
c = s[1];
- if(*s == '?') {
- if(c < '0' || c > '9') {
+ if (*s == '?') {
+ if (c < '0' || c > '9') {
spec_flgs |= SHOW_USAGE_IF_ERROR;
} else {
max_arg = c - '0';
}
continue;
}
- if(*s == '-') {
- if(c < '0' || c > '9') {
- if(c == '-') {
+ if (*s == '-') {
+ if (c < '0' || c > '9') {
+ if (c == '-') {
spec_flgs |= FIRST_ARGV_IS_OPT;
s++;
} else
for (on_off = complementally; on_off->opt; on_off++)
if (on_off->opt == *s)
break;
- if(c == ':' && s[2] == ':') {
+ if (c == ':' && s[2] == ':') {
on_off->list_flg++;
continue;
}
- if(c == ':' || c == '\0') {
+ if (c == ':' || c == '\0') {
requires |= on_off->switch_on;
continue;
}
- if(c == '-' && (s[2] == ':' || s[2] == '\0')) {
+ if (c == '-' && (s[2] == ':' || s[2] == '\0')) {
flags |= on_off->switch_on;
on_off->incongruously |= on_off->switch_on;
s++;
continue;
}
- if(c == *s) {
- on_off->counter = va_arg (p, int *);
+ if (c == *s) {
+ on_off->counter = va_arg(p, int *);
s++;
}
pair = on_off;
pair_switch = &(pair->switch_on);
- for(s++; *s && *s != ':'; s++) {
- if(*s == '?') {
+ for (s++; *s && *s != ':'; s++) {
+ if (*s == '?') {
pair_switch = &(pair->requires);
} else if (*s == '-') {
- if(pair_switch == &(pair->switch_off))
+ if (pair_switch == &(pair->switch_off))
pair_switch = &(pair->incongruously);
else
pair_switch = &(pair->switch_off);
} else {
- for (on_off = complementally; on_off->opt; on_off++)
- if (on_off->opt == *s) {
- *pair_switch |= on_off->switch_on;
- break;
- }
+ for (on_off = complementally; on_off->opt; on_off++)
+ if (on_off->opt == *s) {
+ *pair_switch |= on_off->switch_on;
+ break;
+ }
}
}
s--;
}
va_end (p);
-#if defined(CONFIG_AR) || defined(CONFIG_TAR)
- if((spec_flgs & FIRST_ARGV_IS_OPT)) {
- if(argv[1] && argv[1][0] != '-' && argv[1][0] != '\0') {
+#if ENABLE_AR || ENABLE_TAR
+ if (spec_flgs & FIRST_ARGV_IS_OPT) {
+ if (argv[1] && argv[1][0] != '-' && argv[1][0] != '\0') {
argv[1] = xasprintf("-%s", argv[1]);
- if(ENABLE_FEATURE_CLEAN_UP)
+ if (ENABLE_FEATURE_CLEAN_UP)
spec_flgs |= FREE_FIRST_ARGV_IS_OPT;
}
}
#endif
#if ENABLE_GETOPT_LONG
- while ((c = getopt_long (argc, argv, applet_opts,
+ while ((c = getopt_long(argc, argv, applet_opts,
bb_applet_long_options, NULL)) >= 0) {
#else
- while ((c = getopt (argc, argv, applet_opts)) >= 0) {
+ while ((c = getopt(argc, argv, applet_opts)) >= 0) {
#endif /* ENABLE_GETOPT_LONG */
-#ifdef CONFIG_PS
+#if ENABLE_PS
loop_arg_is_opt:
#endif
for (on_off = complementally; on_off->opt != c; on_off++) {
/* c==0 if long opt have non NULL flag */
- if(on_off->opt == 0 && c != 0)
- bb_show_usage ();
+ if (on_off->opt == 0 && c != 0)
+ bb_show_usage();
}
- if(flags & on_off->incongruously) {
- if((spec_flgs & SHOW_USAGE_IF_ERROR))
- bb_show_usage ();
+ if (flags & on_off->incongruously) {
+ if ((spec_flgs & SHOW_USAGE_IF_ERROR))
+ bb_show_usage();
flags |= BB_GETOPT_ERROR;
}
trigger = on_off->switch_on & on_off->switch_off;
flags &= ~(on_off->switch_off ^ trigger);
flags |= on_off->switch_on ^ trigger;
flags ^= trigger;
- if(on_off->counter)
+ if (on_off->counter)
(*(on_off->counter))++;
- if(on_off->list_flg) {
+ if (on_off->list_flg) {
llist_add_to((llist_t **)(on_off->optarg), optarg);
} else if (on_off->optarg) {
*(char **)(on_off->optarg) = optarg;
}
-#ifdef CONFIG_PS
- if(pargv != NULL)
+#if ENABLE_PS
+ if (pargv != NULL)
break;
#endif
}
-#ifdef CONFIG_PS
- if((spec_flgs & ALL_ARGV_IS_OPTS)) {
+#if ENABLE_PS
+ if (spec_flgs & ALL_ARGV_IS_OPTS) {
/* process argv is option, for example "ps" applet */
- if(pargv == NULL)
+ if (pargv == NULL)
pargv = argv + optind;
- while(*pargv) {
+ while (*pargv) {
c = **pargv;
- if(c == '\0') {
+ if (c == '\0') {
pargv++;
} else {
(*pargv)++;
}
#endif
-#if (defined(CONFIG_AR) || defined(CONFIG_TAR)) && \
- defined(CONFIG_FEATURE_CLEAN_UP)
- if((spec_flgs & FREE_FIRST_ARGV_IS_OPT))
+#if (ENABLE_AR || ENABLE_TAR) && ENABLE_FEATURE_CLEAN_UP
+ if (spec_flgs & FREE_FIRST_ARGV_IS_OPT)
free(argv[1]);
#endif
/* check depending requires for given options */
for (on_off = complementally; on_off->opt; on_off++) {
- if(on_off->requires && (flags & on_off->switch_on) &&
+ if (on_off->requires && (flags & on_off->switch_on) &&
(flags & on_off->requires) == 0)
- bb_show_usage ();
+ bb_show_usage();
}
- if(requires && (flags & requires) == 0)
- bb_show_usage ();
+ if (requires && (flags & requires) == 0)
+ bb_show_usage();
argc -= optind;
- if(argc < min_arg || (max_arg >= 0 && argc > max_arg))
- bb_show_usage ();
+ if (argc < min_arg || (max_arg >= 0 && argc > max_arg))
+ bb_show_usage();
return flags;
}
projects / oweals / busybox.git / commitdiff