- for (i = 1; i < ac; i++) {
- const char *arg = av[i];
- if (arg[0] != '-')
- break;
- if (!strcmp(arg, "--")) {
- i++;
- break;
- }
- if (!prefixcmp(arg, "--format=")) {
- if (format)
- die("more than one --format?");
- format = arg + 9;
- continue;
- }
- if (!strcmp(arg, "-s") || !strcmp(arg, "--shell") ) {
- if (0 <= quote_style)
- die("more than one quoting style?");
- quote_style = QUOTE_SHELL;
- continue;
- }
- if (!strcmp(arg, "-p") || !strcmp(arg, "--perl") ) {
- if (0 <= quote_style)
- die("more than one quoting style?");
- quote_style = QUOTE_PERL;
- continue;
- }
- if (!strcmp(arg, "--python") ) {
- if (0 <= quote_style)
- die("more than one quoting style?");
- quote_style = QUOTE_PYTHON;
- continue;
- }
- if (!strcmp(arg, "--tcl") ) {
- if (0 <= quote_style)
- die("more than one quoting style?");
- quote_style = QUOTE_TCL;
- continue;
- }
- if (!prefixcmp(arg, "--count=")) {
- if (maxcount)
- die("more than one --count?");
- maxcount = atoi(arg + 8);
- if (maxcount <= 0)
- die("The number %s did not parse", arg);
- continue;
- }
- if (!prefixcmp(arg, "--sort=")) {
- struct ref_sort *s = xcalloc(1, sizeof(*s));
- int len;
-
- s->next = NULL;
- *sort_tail = s;
- sort_tail = &s->next;
-
- arg += 7;
- if (*arg == '-') {
- s->reverse = 1;
- arg++;
- }
- len = strlen(arg);
- sort->atom = parse_atom(arg, arg+len);
- continue;
- }
- break;
+ struct option opts[] = {
+ OPT_BIT('s', "shell", "e_style,
+ "quote placeholders suitably for shells", QUOTE_SHELL),
+ OPT_BIT('p', "perl", "e_style,
+ "quote placeholders suitably for perl", QUOTE_PERL),
+ OPT_BIT(0 , "python", "e_style,
+ "quote placeholders suitably for python", QUOTE_PYTHON),
+ OPT_BIT(0 , "tcl", "e_style,
+ "quote placeholders suitably for tcl", QUOTE_TCL),
+
+ OPT_GROUP(""),
+ OPT_INTEGER( 0 , "count", &maxcount, "show only <n> matched refs"),
+ OPT_STRING( 0 , "format", &format, "format", "format to use for the output"),
+ OPT_CALLBACK(0 , "sort", sort_tail, "key",
+ "field name to sort on", &opt_parse_sort),
+ OPT_END(),
+ };
+
+ parse_options(argc, argv, opts, for_each_ref_usage, 0);
+ if (maxcount < 0) {
+ error("invalid --count argument: `%d'", maxcount);
+ usage_with_options(for_each_ref_usage, opts);