const struct option *opt, int flags)
{
const char *s, *arg;
- arg = p->opt ? p->opt : (p->argc > 1 ? p->argv[1] : NULL);
+ const int unset = flags & OPT_UNSET;
- if (p->opt && (flags & OPT_UNSET))
+ if (unset && p->opt)
return opterror(opt, "takes no value", flags);
+ if (unset && (opt->flags & PARSE_OPT_NONEG))
+ return opterror(opt, "isn't available", flags);
- switch (opt->type) {
- case OPTION_BOOLEAN:
- if (!(flags & OPT_SHORT) && p->opt)
+ if (!(flags & OPT_SHORT) && p->opt) {
+ switch (opt->type) {
+ case OPTION_CALLBACK:
+ if (!(opt->flags & PARSE_OPT_NOARG))
+ break;
+ /* FALLTHROUGH */
+ case OPTION_BOOLEAN:
+ case OPTION_BIT:
+ case OPTION_SET_INT:
+ case OPTION_SET_PTR:
return opterror(opt, "takes no value", flags);
- if (flags & OPT_UNSET)
- *(int *)opt->value = 0;
+ default:
+ break;
+ }
+ }
+
+ arg = p->opt ? p->opt : (p->argc > 1 ? p->argv[1] : NULL);
+ switch (opt->type) {
+ case OPTION_BIT:
+ if (unset)
+ *(int *)opt->value &= ~opt->defval;
else
- (*(int *)opt->value)++;
+ *(int *)opt->value |= opt->defval;
+ return 0;
+
+ case OPTION_BOOLEAN:
+ *(int *)opt->value = unset ? 0 : *(int *)opt->value + 1;
+ return 0;
+
+ case OPTION_SET_INT:
+ *(int *)opt->value = unset ? 0 : opt->defval;
+ return 0;
+
+ case OPTION_SET_PTR:
+ *(void **)opt->value = unset ? NULL : (void *)opt->defval;
return 0;
case OPTION_STRING:
- if (flags & OPT_UNSET) {
- *(const char **)opt->value = (const char *)NULL;
+ if (unset) {
+ *(const char **)opt->value = NULL;
return 0;
}
- if (opt->flags & PARSE_OPT_OPTARG && (!arg || *arg == '-')) {
+ if (opt->flags & PARSE_OPT_OPTARG && !p->opt) {
*(const char **)opt->value = (const char *)opt->defval;
return 0;
}
return 0;
case OPTION_CALLBACK:
- if (flags & OPT_UNSET)
+ if (unset)
return (*opt->callback)(opt, NULL, 1);
- if (opt->flags & PARSE_OPT_OPTARG && (!arg || *arg == '-'))
+ if (opt->flags & PARSE_OPT_NOARG)
+ return (*opt->callback)(opt, NULL, 0);
+ if (opt->flags & PARSE_OPT_OPTARG && !p->opt)
return (*opt->callback)(opt, NULL, 0);
if (!arg)
return opterror(opt, "requires a value", flags);
return (*opt->callback)(opt, get_arg(p), 0);
case OPTION_INTEGER:
- if (flags & OPT_UNSET) {
+ if (unset) {
*(int *)opt->value = 0;
return 0;
}
- if (opt->flags & PARSE_OPT_OPTARG && (!arg || !isdigit(*arg))) {
+ if (opt->flags & PARSE_OPT_OPTARG && !p->opt) {
*(int *)opt->value = opt->defval;
return 0;
}
static int parse_long_opt(struct optparse_t *p, const char *arg,
const struct option *options)
{
+ const char *arg_end = strchr(arg, '=');
+ const struct option *abbrev_option = NULL, *ambiguous_option = NULL;
+ int abbrev_flags = 0, ambiguous_flags = 0;
+
+ if (!arg_end)
+ arg_end = arg + strlen(arg);
+
for (; options->type != OPTION_END; options++) {
const char *rest;
int flags = 0;
rest = skip_prefix(arg, options->long_name);
if (!rest) {
+ /* abbreviated? */
+ if (!strncmp(options->long_name, arg, arg_end - arg)) {
+is_abbreviated:
+ if (abbrev_option) {
+ /*
+ * If this is abbreviated, it is
+ * ambiguous. So when there is no
+ * exact match later, we need to
+ * error out.
+ */
+ ambiguous_option = abbrev_option;
+ ambiguous_flags = abbrev_flags;
+ }
+ if (!(flags & OPT_UNSET) && *arg_end)
+ p->opt = arg_end + 1;
+ abbrev_option = options;
+ abbrev_flags = flags;
+ continue;
+ }
+ /* negated and abbreviated very much? */
+ if (!prefixcmp("no-", arg)) {
+ flags |= OPT_UNSET;
+ goto is_abbreviated;
+ }
+ /* negated? */
if (strncmp(arg, "no-", 3))
continue;
flags |= OPT_UNSET;
rest = skip_prefix(arg + 3, options->long_name);
+ /* abbreviated and negated? */
+ if (!rest && !prefixcmp(options->long_name, arg + 3))
+ goto is_abbreviated;
if (!rest)
continue;
}
}
return get_value(p, options, flags);
}
+
+ if (ambiguous_option)
+ return error("Ambiguous option: %s "
+ "(could be --%s%s or --%s%s)",
+ arg,
+ (ambiguous_flags & OPT_UNSET) ? "no-" : "",
+ ambiguous_option->long_name,
+ (abbrev_flags & OPT_UNSET) ? "no-" : "",
+ abbrev_option->long_name);
+ if (abbrev_option)
+ return get_value(p, abbrev_option, abbrev_flags);
return error("unknown option `%s'", arg);
}
+void check_typos(const char *arg, const struct option *options)
+{
+ if (strlen(arg) < 3)
+ return;
+
+ if (!prefixcmp(arg, "no-")) {
+ error ("did you mean `--%s` (with two dashes ?)", arg);
+ exit(129);
+ }
+
+ for (; options->type != OPTION_END; options++) {
+ if (!options->long_name)
+ continue;
+ if (!prefixcmp(options->long_name, arg)) {
+ error ("did you mean `--%s` (with two dashes ?)", arg);
+ exit(129);
+ }
+ }
+}
+
+static NORETURN void usage_with_options_internal(const char * const *,
+ const struct option *, int);
+
int parse_options(int argc, const char **argv, const struct option *options,
const char * const usagestr[], int flags)
{
if (arg[1] != '-') {
args.opt = arg + 1;
- do {
+ if (*args.opt == 'h')
+ usage_with_options(usagestr, options);
+ if (parse_short_opt(&args, options) < 0)
+ usage_with_options(usagestr, options);
+ if (args.opt)
+ check_typos(arg + 1, options);
+ while (args.opt) {
if (*args.opt == 'h')
usage_with_options(usagestr, options);
if (parse_short_opt(&args, options) < 0)
usage_with_options(usagestr, options);
- } while (args.opt);
+ }
continue;
}
break;
}
+ if (!strcmp(arg + 2, "help-all"))
+ usage_with_options_internal(usagestr, options, 1);
if (!strcmp(arg + 2, "help"))
usage_with_options(usagestr, options);
if (parse_long_opt(&args, arg + 2, options))
#define USAGE_OPTS_WIDTH 24
#define USAGE_GAP 2
-void usage_with_options(const char * const *usagestr,
- const struct option *opts)
+void usage_with_options_internal(const char * const *usagestr,
+ const struct option *opts, int full)
{
fprintf(stderr, "usage: %s\n", *usagestr++);
while (*usagestr && **usagestr)
fprintf(stderr, "%s\n", opts->help);
continue;
}
+ if (!full && (opts->flags & PARSE_OPT_HIDDEN))
+ continue;
pos = fprintf(stderr, " ");
if (opts->short_name)
else
pos += fprintf(stderr, " <n>");
break;
- case OPTION_STRING:
case OPTION_CALLBACK:
+ if (opts->flags & PARSE_OPT_NOARG)
+ break;
+ /* FALLTHROUGH */
+ case OPTION_STRING:
if (opts->argh) {
if (opts->flags & PARSE_OPT_OPTARG)
pos += fprintf(stderr, " [<%s>]", opts->argh);
pos += fprintf(stderr, " ...");
}
break;
- default:
+ default: /* OPTION_{BIT,BOOLEAN,SET_INT,SET_PTR} */
break;
}
exit(129);
}
+
+void usage_with_options(const char * const *usagestr,
+ const struct option *opts)
+{
+ usage_with_options_internal(usagestr, opts, 0);
+}
+
+/*----- some often used options -----*/
+#include "cache.h"
+
+int parse_opt_abbrev_cb(const struct option *opt, const char *arg, int unset)
+{
+ int v;
+
+ if (!arg) {
+ v = unset ? 0 : DEFAULT_ABBREV;
+ } else {
+ v = strtol(arg, (char **)&arg, 10);
+ if (*arg)
+ return opterror(opt, "expects a numerical value", 0);
+ if (v && v < MINIMUM_ABBREV)
+ v = MINIMUM_ABBREV;
+ else if (v > 40)
+ v = 40;
+ }
+ *(int *)(opt->value) = v;
+ return 0;
+}