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-rw-r--r--libbb/getopt_ulflags.c181
1 files changed, 117 insertions, 64 deletions
diff --git a/libbb/getopt_ulflags.c b/libbb/getopt_ulflags.c
index 5f35c58..47f65d6 100644
--- a/libbb/getopt_ulflags.c
+++ b/libbb/getopt_ulflags.c
@@ -66,7 +66,7 @@ bb_getopt_ulflags (int argc, char **argv, const char *applet_opts, ...)
&pointer_to_arg_for_c, &pointer_to_arg_for_d);
The type of the pointer (char* or llist_t *) may be controlled
- by the "*" special character that is set in the external string
+ by the "::" special separator that is set in the external string
bb_opt_complementally (see below for more info).
static const struct option bb_default_long_options[]
@@ -127,13 +127,13 @@ const char *bb_opt_complementally
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:
+ 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";
+ 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; }
@@ -164,15 +164,14 @@ Special characters:
opt = bb_getopt_ulflags(argc, argv, "sd:x", &smax_print_depth);
if (opt & 2) {
- max_print_depth = bb_xgetularg10_bnd(smax_print_depth,
- 0, INT_MAX);
+ max_print_depth = atoi(smax_print_depth);
}
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:
+ "-" A dash as the first char in a bb_opt_complementally group means to
+ convert the arguments as option. Next char for this case can`t set
+ [0-9], recomended use ':' or end of line. For example:
bb_opt_complementally = "-:w-x:x-w";
bb_getopt_ulflags(argc, argv, "wx");
@@ -180,7 +179,10 @@ Special characters:
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
+ "-N" A dash as the first char in a bb_opt_complementally group with
+ number 0-9 as one char is means check minimal arguments required.
+
+ "--" A double dash 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
are used together.
@@ -189,7 +191,7 @@ Special characters:
The cut applet must have only one type of list specified, so
-b, -c and -f are mutally exclusive and should raise an error
if specified together. In this case you must set
- bb_opt_complementally = "b~cf:c~bf:f~bc". If two of the
+ bb_opt_complementally = "b--cf:c--bf:f--bc". If two of the
mutually exclusive options are found, bb_getopt_ulflags's
return value will have the error flag set (BB_GETOPT_ERROR) so
that we can check for it:
@@ -199,9 +201,13 @@ Special characters:
"?" A "ask" as the first char in a bb_opt_complementally group give:
if previous point set BB_GETOPT_ERROR, don`t return and
- call previous example internally
+ call previous example internally. Next char for this case can`t
+ set to [0-9], recomended use ':' or end of line.
+
+ "?N" A "ask" as the first char in a bb_opt_complementally group with
+ number 0-9 as one char is means check maximal arguments possible.
- "*" A star after a char in bb_opt_complementally means that the
+ "::" A double colon after a char in bb_opt_complementally means that the
option can occur multiple times:
For example:
@@ -213,33 +219,45 @@ Special characters:
(this pointer must be initializated to NULL if the list is empty
as required by *llist_add_to(llist_t *old_head, char *new_item).)
- bb_opt_complementally = "e*";
+ bb_opt_complementally = "e::";
bb_getopt_ulflags(argc, argv, "e:", &patterns);
$ grep -e user -e root /etc/passwd
root:x:0:0:root:/root:/bin/bash
user:x:500:500::/home/user:/bin/bash
+ "--" A double dash as the first char in a bb_opt_complementally group
+ means make first argv[1] as option always as may be added -, special
+ for "ar" and "tar" applets.
+
"?" A "ask" between main and group options causes the second of the two
- to be depending required if first is given on the command line.
+ to be depending required as or if first is given on the command line.
For example from "id" applet:
// Don't allow -n -r -rn -ug -rug -nug -rnug
- bb_opt_complementally = "?u~g:g~u:r?ug:n?ug";
+ bb_opt_complementally = "r?ug:n?ug:?u--g:g--u";
flags = bb_getopt_ulflags(argc, argv, "rnug");
This example allowed only:
$ id; id -u; id -g; id -ru; id -nu; id -rg; id -ng; id -rnu; id -rng
- "?" A "ask" between equivalent options in bb_opt_complementally means
- requires this option always, checked after switch off from
- complementally logic
+ "X" A one options in bb_opt_complementally group means
+ requires this option always with "or" logic if more one specified,
+ checked after switch off from complementally logic.
For example from "start-stop-daemon" applet:
// Don't allow -KS -SK, but -S or -K required
- bb_opt_complementally = "?:K?K:S?S:K~S:S~K";
+ 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 ':' store. For example "?322-22-23X-x-a" interpretet as
+ "?3:22:-2:2-2:2-3Xa:2--x": max args is 3, count -2 usaged, min args is 2,
+ -2 option triggered, unset -3 and -X and -a if -2 any usaged, give error if
+ after -2 the -x option usaged.
+
*/
const char *bb_opt_complementally;
@@ -277,22 +295,25 @@ bb_getopt_ulflags (int argc, char **argv, const char *applet_opts, ...)
const struct option *l_o;
unsigned long trigger;
char **pargv = NULL;
+ int min_arg = 0;
+ int max_arg = -1;
-#define SHOW_USAGE_IF_ERROR 1
-#define ARGV_IS_OPTS 2
+#define SHOW_USAGE_IF_ERROR 1
+#define ALL_ARGV_IS_OPTS 2
+#define FIRST_ARGV_IS_OPT 4
+#define FREE_FIRST_ARGV_IS_OPT 8
int spec_flgs = 0;
va_start (p, applet_opts);
- /* skip GNU extension */
- s = applet_opts;
- if(*s == '+' || *s == '-')
- s++;
-
c = 0;
on_off = complementally;
memset(on_off, 0, sizeof(complementally));
+ /* skip GNU extension */
+ s = applet_opts;
+ if(*s == '+' || *s == '-')
+ s++;
for (; *s; s++) {
if(c >= (int)(sizeof(flags)*8))
break;
@@ -324,68 +345,86 @@ bb_getopt_ulflags (int argc, char **argv, const char *applet_opts, ...)
c++;
}
}
- c = 0;
for (s = bb_opt_complementally; s && *s; s++) {
t_complementally *pair;
+ unsigned long *pair_switch;
- if (*s == ':') {
- c = 0;
- continue;
- }
- if (c)
+ if (*s == ':')
continue;
+ c = s[1];
if(*s == '?') {
- spec_flgs |= SHOW_USAGE_IF_ERROR;
+ if(c < '0' || c > '9') {
+ spec_flgs |= SHOW_USAGE_IF_ERROR;
+ } else {
+ max_arg = c - '0';
+ s++;
+ }
continue;
}
if(*s == '-') {
- spec_flgs |= ARGV_IS_OPTS;
+ if(c < '0' || c > '9') {
+ if(c == '-') {
+ spec_flgs |= FIRST_ARGV_IS_OPT;
+ s++;
+ } else
+ spec_flgs |= ALL_ARGV_IS_OPTS;
+ } else {
+ min_arg = c - '0';
+ s++;
+ }
continue;
}
for (on_off = complementally; on_off->opt; on_off++)
if (on_off->opt == *s)
break;
+ if(c == ':' && s[2] == ':') {
+ on_off->list_flg++;
+ continue;
+ }
+ if(c == ':' || c == '\0') {
+ requires |= on_off->switch_on;
+ continue;
+ }
+ 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 == '-' || *s == '~' || *s == '?') {
- c = *s;
- } else if(*s == '*') {
- pair->list_flg++;
- } else {
- unsigned long *pair_switch;
-
- switch(c) {
- case '-':
- pair_switch = &(pair->switch_off);
- break;
- case '~':
+ if(*s == '?') {
+ pair_switch = &(pair->requires);
+ } else if (*s == '-') {
+ if(pair_switch == &(pair->switch_off))
pair_switch = &(pair->incongruously);
- break;
- case '?':
- pair_switch = &(pair->requires);
- break;
- default:
- pair_switch = &(pair->switch_on);
- }
+ else
+ pair_switch = &(pair->switch_off);
+ } else {
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 if(pair_switch == &(on_off->requires))
- requires |= on_off->switch_on;
- else
- *pair_switch |= on_off->switch_on;
+ *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') {
+ argv[1] = bb_xasprintf("-%s", argv[1]);
+ if(ENABLE_FEATURE_CLEAN_UP)
+ spec_flgs |= FREE_FIRST_ARGV_IS_OPT;
+ }
+ }
+#endif
while ((c = getopt_long (argc, argv, applet_opts,
bb_applet_long_options, NULL)) >= 0) {
-
+#ifdef CONFIG_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)
@@ -408,10 +447,14 @@ loop_arg_is_opt:
} else if (on_off->optarg) {
*(char **)(on_off->optarg) = optarg;
}
+#ifdef CONFIG_PS
if(pargv != NULL)
break;
+#endif
}
- if((spec_flgs & ARGV_IS_OPTS)) {
+
+#ifdef CONFIG_PS
+ if((spec_flgs & ALL_ARGV_IS_OPTS)) {
/* process argv is option, for example "ps" applet */
if(pargv == NULL)
pargv = argv + optind;
@@ -425,6 +468,13 @@ loop_arg_is_opt:
}
}
}
+#endif
+
+#if (defined(CONFIG_AR) || defined(CONFIG_TAR)) && \
+ defined(CONFIG_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) &&
@@ -433,5 +483,8 @@ loop_arg_is_opt:
}
if(requires && (flags & requires) == 0)
bb_show_usage ();
+ argc -= optind;
+ if(argc < min_arg || (max_arg >= 0 && argc > max_arg))
+ bb_show_usage ();
return flags;
}
generated by cgit v1.1 at 2024-12-26 21:28:59 +0000