diff options
Diffstat (limited to 'libbb')
| -rw-r--r-- | libbb/getopt_ulflags.c | 34 |
1 files changed, 26 insertions, 8 deletions
diff --git a/libbb/getopt_ulflags.c b/libbb/getopt_ulflags.c index 410f4d57d..37c4ec0f0 100644 --- a/libbb/getopt_ulflags.c +++ b/libbb/getopt_ulflags.c @@ -110,21 +110,32 @@ const char *bb_opt_complementally bb_getopt_ulflags's return value will be as if "-a -b -c" were found. - "ww" Double option have int counter usaging. For example ps applet: + "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"; - flags = bb_getopt_ulflags(argc, argv, "w", &w_counter); + bb_getopt_ulflags(argc, argv, "w", &w_counter); - if((flags & 1)) + if(w_counter) width = (w_counter == 1) ? 132 : INT_MAX; else get_terminal_width(...&width...); - w_counter - have counter -w usaging, must set int pointer - to bb_getopt_ulflags() after all other requires + 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 = "vvb*b-c:c-b"; + bb_getopt_ulflags(argc, argv, "vb:c", &my_b, &verbose_level); + while (my_b) { dosomething_with(my_b->data) ; my_b = my_b->link; } + if (verbose_level) bb_printf("verbose\n"); Special characters: @@ -155,6 +166,16 @@ Special characters: 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"; + bb_getopt_ulflags(argc, argv, "w"); + + Allows option 'w' to be given without a dash (./program w) + as well as with a dash (./program -w). + "~" 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 @@ -175,9 +196,6 @@ Special characters: "!" If previous point set BB_GETOPT_ERROR, don`t return and call previous example internally - "-" A minus as one char in bb_opt_complementally group means that - convert the arguments as option, specail for "ps" applet. - "*" A star after a char in bb_opt_complementally means that the option can occur multiple times: |