X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=parse-options.c;h=d9562ba5047ff1c9994755a4dbec5162b551c788;hb=7d22708b254d4ec28cd865dc5489d175ee6d65c2;hp=cc09c98ec3fe19d6f9f5f7a58a3c5956bd7c0578;hpb=03800743156fe4f331a10c0983b9d633bed3a687;p=git.git

diff --git a/parse-options.c b/parse-options.c
index cc09c98ec..d9562ba50 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -40,27 +40,56 @@ static int get_value(struct optparse_t *p,
                      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;
 		}
@@ -70,25 +99,22 @@ static int get_value(struct optparse_t *p,
 		return 0;
 
 	case OPTION_CALLBACK:
-		if (flags & OPT_UNSET)
+		if (unset)
 			return (*opt->callback)(opt, NULL, 1);
-		if (opt->flags & PARSE_OPT_NOARG) {
-			if (p->opt && !(flags & OPT_SHORT))
-				return opterror(opt, "takes no value", flags);
+		if (opt->flags & PARSE_OPT_NOARG)
 			return (*opt->callback)(opt, NULL, 0);
-		}
-		if (opt->flags & PARSE_OPT_OPTARG && (!arg || *arg == '-'))
+		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;
 		}
@@ -119,8 +145,8 @@ 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;
-	int abbrev_flags = 0;
+	const struct option *abbrev_option = NULL, *ambiguous_option = NULL;
+	int abbrev_flags = 0, ambiguous_flags = 0;
 
 	if (!arg_end)
 		arg_end = arg + strlen(arg);
@@ -137,16 +163,16 @@ static int parse_long_opt(struct optparse_t *p, const char *arg,
 			/* abbreviated? */
 			if (!strncmp(options->long_name, arg, arg_end - arg)) {
 is_abbreviated:
-				if (abbrev_option)
-					return error("Ambiguous option: %s "
-						"(could be --%s%s or --%s%s)",
-						arg,
-						(flags & OPT_UNSET) ?
-							"no-" : "",
-						options->long_name,
-						(abbrev_flags & OPT_UNSET) ?
-							"no-" : "",
-						abbrev_option->long_name);
+				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;
@@ -176,11 +202,43 @@ is_abbreviated:
 		}
 		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)
 {
@@ -197,12 +255,18 @@ int parse_options(int argc, const char **argv, const struct option *options,
 
 		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;
 		}
 
@@ -214,6 +278,8 @@ int parse_options(int argc, const char **argv, const struct option *options,
 			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))
@@ -228,8 +294,8 @@ int parse_options(int argc, const char **argv, const struct option *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)
@@ -250,6 +316,8 @@ void usage_with_options(const char * const *usagestr,
 				fprintf(stderr, "%s\n", opts->help);
 			continue;
 		}
+		if (!full && (opts->flags & PARSE_OPT_HIDDEN))
+			continue;
 
 		pos = fprintf(stderr, "    ");
 		if (opts->short_name)
@@ -283,7 +351,7 @@ void usage_with_options(const char * const *usagestr,
 					pos += fprintf(stderr, " ...");
 			}
 			break;
-		default:
+		default: /* OPTION_{BIT,BOOLEAN,SET_INT,SET_PTR} */
 			break;
 		}
 
@@ -300,8 +368,15 @@ void usage_with_options(const char * const *usagestr,
 	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;