*/
//usage:#define getopt_trivial_usage
-//usage: "[OPTIONS]"
+//usage: "[OPTIONS] [--] OPTSTRING PARAMS"
//usage:#define getopt_full_usage "\n\n"
//usage: IF_LONG_OPTS(
-//usage: " -a,--alternative Allow long options starting with single -"
-//usage: "\n -l,--longoptions=longopts Long options to be recognized"
-//usage: "\n -n,--name=progname The name under which errors are reported"
-//usage: "\n -o,--options=optstring Short options to be recognized"
-//usage: "\n -q,--quiet Disable error reporting by getopt(3)"
+//usage: IF_FEATURE_GETOPT_LONG(
+//usage: " -a,--alternative Allow long options starting with single -\n"
+//usage: " -l,--longoptions=LOPT[,...] Long options to recognize\n"
+//usage: )
+//usage: " -n,--name=PROGNAME The name under which errors are reported"
+//usage: "\n -o,--options=OPTSTRING Short options to recognize"
+//usage: "\n -q,--quiet No error messages on unrecognized options"
//usage: "\n -Q,--quiet-output No normal output"
-//usage: "\n -s,--shell=shell Set shell quoting conventions"
-//usage: "\n -T,--test Test for getopt(1) version"
-//usage: "\n -u,--unquoted Don't quote the output"
+//usage: "\n -s,--shell=SHELL Set shell quoting conventions"
+//usage: "\n -T,--test Version test (exits with 4)"
+//usage: "\n -u,--unquoted Don't quote output"
//usage: )
//usage: IF_NOT_LONG_OPTS(
-//usage: " -a Allow long options starting with single -"
-//usage: "\n -l longopts Long options to be recognized"
-//usage: "\n -n progname The name under which errors are reported"
-//usage: "\n -o optstring Short options to be recognized"
-//usage: "\n -q Disable error reporting by getopt(3)"
+//usage: IF_FEATURE_GETOPT_LONG(
+//usage: " -a Allow long options starting with single -\n"
+//usage: " -l LOPT[,...] Long options to recognize\n"
+//usage: )
+//usage: " -n PROGNAME The name under which errors are reported"
+//usage: "\n -o OPTSTRING Short options to recognize"
+//usage: "\n -q No error messages on unrecognized options"
//usage: "\n -Q No normal output"
-//usage: "\n -s shell Set shell quoting conventions"
-//usage: "\n -T Test for getopt(1) version"
-//usage: "\n -u Don't quote the output"
+//usage: "\n -s SHELL Set shell quoting conventions"
+//usage: "\n -T Version test (exits with 4)"
+//usage: "\n -u Don't quote output"
+//usage: )
+//usage: IF_FEATURE_GETOPT_LONG( /* example uses -l, needs FEATURE_GETOPT_LONG */
+//usage: "\n"
+//usage: "\nExample:"
+//usage: "\n"
+//usage: "\nO=`getopt -l bb: -- ab:c:: \"$@\"` || exit 1"
+//usage: "\neval set -- \"$O\""
+//usage: "\nwhile true; do"
+//usage: "\n case \"$1\" in"
+//usage: "\n -a) echo A; shift;;"
+//usage: "\n -b|--bb) echo \"B:'$2'\"; shift 2;;"
+//usage: "\n -c) case \"$2\" in"
+//usage: "\n \"\") echo C; shift 2;;"
+//usage: "\n *) echo \"C:'$2'\"; shift 2;;"
+//usage: "\n esac;;"
+//usage: "\n --) shift; break;;"
+//usage: "\n *) echo Error; exit 1;;"
+//usage: "\n esac"
+//usage: "\ndone"
//usage: )
//usage:
//usage:#define getopt_example_usage
static int generate_output(char **argv, int argc, const char *optstr, const struct option *longopts)
{
int exit_code = 0; /* We assume everything will be OK */
- int opt;
-#if ENABLE_FEATURE_GETOPT_LONG
- int longindex;
-#endif
- const char *charptr;
if (quiet_errors) /* No error reporting from getopt(3) */
opterr = 0;
#endif
while (1) {
- opt =
#if ENABLE_FEATURE_GETOPT_LONG
- alternative ?
- getopt_long_only(argc, argv, optstr, longopts, &longindex) :
- getopt_long(argc, argv, optstr, longopts, &longindex);
+ int longindex;
+ int opt = alternative
+ ? getopt_long_only(argc, argv, optstr, longopts, &longindex)
+ : getopt_long(argc, argv, optstr, longopts, &longindex)
+ ;
#else
- getopt(argc, argv, optstr);
+ int opt = getopt(argc, argv, optstr);
#endif
if (opt == -1)
break;
if (opt == NON_OPT)
printf(" %s", normalize(optarg));
else {
+ const char *charptr;
printf(" -%c", opt);
charptr = strchr(optstr, opt);
- if (charptr != NULL && *++charptr == ':')
+ if (charptr && *++charptr == ':')
printf(" %s",
normalize(optarg ? optarg : ""));
}
}
if (!quiet_output) {
+ unsigned idx;
printf(" --");
- while (optind < argc)
- printf(" %s", normalize(argv[optind++]));
+ idx = optind;
+ while (argv[idx])
+ printf(" %s", normalize(argv[idx++]));
bb_putchar('\n');
}
return exit_code;
int getopt_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int getopt_main(int argc, char **argv)
{
+ int n;
char *optstr = NULL;
char *name = NULL;
unsigned opt;
compatible = getenv("GETOPT_COMPATIBLE"); /* used as yes/no flag */
- if (argc == 1) {
+ if (!argv[1]) {
if (compatible) {
/* For some reason, the original getopt gave no error
- when there were no arguments. */
+ * when there were no arguments. */
printf(" --\n");
return 0;
}
}
if (argv[1][0] != '-' || compatible) {
- char *s;
+ char *s = argv[1];
option_mask32 |= OPT_u; /* quoting off */
- s = xstrdup(argv[1] + strspn(argv[1], "-+"));
+ s = xstrdup(s + strspn(s, "-+"));
argv[1] = argv[0];
return generate_output(argv+1, argc-1, s, long_options);
}
}
/* All options controlling the applet have now been parsed */
+ n = optind - 1;
if (!optstr) {
- if (optind >= argc)
+ optstr = argv[++n];
+ if (!optstr)
bb_error_msg_and_die("missing optstring argument");
- optstr = argv[optind++];
}
- argv[optind-1] = name ? name : argv[0];
- return generate_output(argv+optind-1, argc-optind+1, optstr, long_options);
+ argv[n] = name ? name : argv[0];
+ return generate_output(argv + n, argc - n, optstr, long_options);
}
projects / oweals / busybox.git / blobdiff