/* find matching long option */
if (strncmp(current_argv, long_options[i].name, current_argv_len)) continue;
if (strlen(long_options[i].name) == (unsigned)current_argv_len) { /* exact match */ match = i; break; } if (match == -1) /* partial match */ match = i; else { /* ambiguous abbreviation */ if (PRINT_ERROR) warnx(ambig, (int)current_argv_len, current_argv); optopt = 0; return BADCH; } }
if (match != -1) { /* option found */ if (long_options[match].has_arg == no_argument && has_equal) { if (PRINT_ERROR) warnx(noarg, (int)current_argv_len, current_argv); /* * XXX: GNU sets optopt to val regardless of * flag */ if (long_options[match].flag == NULL) optopt = long_options[match].val; else optopt = 0; return BADARG; } if (long_options[match].has_arg == required_argument || long_options[match].has_arg == optional_argument) { if (has_equal) optarg = has_equal; else if (long_options[match].has_arg == required_argument) {
}
/* * optional argument doesn't use * next nargv */ optarg = nargv[optind++]; } } if ((long_options[match].has_arg == required_argument) && (optarg == NULL)) { /* * Missing argument; leading ':' * indicates no error should be generated */ if (PRINT_ERROR) warnx(recargstring, current_argv); /* * XXX: GNU sets optopt to val regardless * of flag */ if (long_options[match].flag == NULL) optopt = long_options[match].val; else optopt = 0; --optind; return BADARG; } } else { /* unknown option */ if (PRINT_ERROR) warnx(illoptstring, current_argv); optopt = 0; return BADCH; } if (long_options[match].flag) { *long_options[match].flag = long_options[match].val; retval = 0; } else retval = long_options[match].val; if (idx) *idx = match; }
return retval;