43fb3fcb2
Bernhard Reutner-Fischer
2005-10-05
Subject
- add a bit more documentation to vodz' recent additions.
SOURCE BUG
This commit was genuinely broken at the time (not related to our build system): scripts/config/mkconfigs.c (2005-08-01 - 2006-10-05 arasi) uretilen bbconfigopts.h icine .config satirlarini kacissiz, ham newline'larla gömüyordu - gecerli C degildi, busybox'un kendi bb_mkdep araci bile parse edemiyordu (7d219aab7 ile duzeltildi, mkconfigs shell scripte cevrildi)
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libbb/getopt_ulflags.c+26 -8
| @@ -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: | |