Merge branch 'nd/index-doc' into maint

[thirdparty/git.git] / parse-options.c

diff --git a/parse-options.c b/parse-options.c
index 0fa79bc31d322e2aab8fce738ca6489a35a51ca4..42b51ef14514f3c3df454e4b718718a9b58f1612 100644 (file)
--- a/parse-options.c
+++ b/parse-options.c
@@ -11,6 +11,13 @@ static int parse_options_usage(struct parse_opt_ctx_t *ctx,
 #define OPT_SHORT 1
 #define OPT_UNSET 2
 
+static int optbug(const struct option *opt, const char *reason)
+{
+       if (opt->long_name)
+               return error("BUG: option '%s' %s", opt->long_name, reason);
+       return error("BUG: switch '%c' %s", opt->short_name, reason);
+}
+
 static int opterror(const struct option *opt, const char *reason, int flags)
 {
        if (flags & OPT_SHORT)
@@ -55,25 +62,13 @@ static int get_value(struct parse_opt_ctx_t *p,
                return opterror(opt, "takes no value", flags);
        if (unset && (opt->flags & PARSE_OPT_NONEG))
                return opterror(opt, "isn't available", flags);
-
-       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_NEGBIT:
-               case OPTION_SET_INT:
-               case OPTION_SET_PTR:
-                       return opterror(opt, "takes no value", flags);
-               default:
-                       break;
-               }
-       }
+       if (!(flags & OPT_SHORT) && p->opt && (opt->flags & PARSE_OPT_NOARG))
+               return opterror(opt, "takes no value", flags);
 
        switch (opt->type) {
+       case OPTION_LOWLEVEL_CALLBACK:
+               return (*(parse_opt_ll_cb *)opt->callback)(p, opt, unset);
+
        case OPTION_BIT:
                if (unset)
                        *(int *)opt->value &= ~opt->defval;
@@ -281,13 +276,6 @@ static int parse_nodash_opt(struct parse_opt_ctx_t *p, const char *arg,
        for (; options->type != OPTION_END; options++) {
                if (!(options->flags & PARSE_OPT_NODASH))
                        continue;
-               if ((options->flags & PARSE_OPT_OPTARG) ||
-                   !(options->flags & PARSE_OPT_NOARG))
-                       die("BUG: dashless options don't support arguments");
-               if (!(options->flags & PARSE_OPT_NONEG))
-                       die("BUG: dashless options don't support negation");
-               if (options->long_name)
-                       die("BUG: dashless options can't be long");
                if (options->short_name == arg[0] && arg[1] == '\0')
                        return get_value(p, options, OPT_SHORT);
        }
@@ -320,25 +308,37 @@ static void parse_options_check(const struct option *opts)
 
        for (; opts->type != OPTION_END; opts++) {
                if ((opts->flags & PARSE_OPT_LASTARG_DEFAULT) &&
-                   (opts->flags & PARSE_OPT_OPTARG)) {
-                       if (opts->long_name) {
-                               error("`--%s` uses incompatible flags "
-                                     "LASTARG_DEFAULT and OPTARG", opts->long_name);
-                       } else {
-                               error("`-%c` uses incompatible flags "
-                                     "LASTARG_DEFAULT and OPTARG", opts->short_name);
-                       }
-                       err |= 1;
+                   (opts->flags & PARSE_OPT_OPTARG))
+                       err |= optbug(opts, "uses incompatible flags "
+                                       "LASTARG_DEFAULT and OPTARG");
+               if (opts->flags & PARSE_OPT_NODASH &&
+                   ((opts->flags & PARSE_OPT_OPTARG) ||
+                    !(opts->flags & PARSE_OPT_NOARG) ||
+                    !(opts->flags & PARSE_OPT_NONEG) ||
+                    opts->long_name))
+                       err |= optbug(opts, "uses feature "
+                                       "not supported for dashless options");
+               switch (opts->type) {
+               case OPTION_BOOLEAN:
+               case OPTION_BIT:
+               case OPTION_NEGBIT:
+               case OPTION_SET_INT:
+               case OPTION_SET_PTR:
+               case OPTION_NUMBER:
+                       if ((opts->flags & PARSE_OPT_OPTARG) ||
+                           !(opts->flags & PARSE_OPT_NOARG))
+                               err |= optbug(opts, "should not accept an argument");
+               default:
+                       ; /* ok. (usually accepts an argument) */
                }
        }
-
        if (err)
-               exit(129);
+               exit(128);
 }
 
 void parse_options_start(struct parse_opt_ctx_t *ctx,
                         int argc, const char **argv, const char *prefix,
-                        int flags)
+                        const struct option *options, int flags)
 {
        memset(ctx, 0, sizeof(*ctx));
        ctx->argc = argc - 1;
@@ -350,6 +350,7 @@ void parse_options_start(struct parse_opt_ctx_t *ctx,
        if ((flags & PARSE_OPT_KEEP_UNKNOWN) &&
            (flags & PARSE_OPT_STOP_AT_NON_OPTION))
                die("STOP_AT_NON_OPTION and KEEP_UNKNOWN don't go together");
+       parse_options_check(options);
 }
 
 static int usage_with_options_internal(struct parse_opt_ctx_t *,
@@ -362,8 +363,6 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
 {
        int internal_help = !(ctx->flags & PARSE_OPT_NO_INTERNAL_HELP);
 
-       parse_options_check(options);
-
        /* we must reset ->opt, unknown short option leave it dangling */
        ctx->opt = NULL;
 
@@ -374,7 +373,7 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
                        if (parse_nodash_opt(ctx, arg, options) == 0)
                                continue;
                        if (ctx->flags & PARSE_OPT_STOP_AT_NON_OPTION)
-                               break;
+                               return PARSE_OPT_NON_OPTION;
                        ctx->out[ctx->cpidx++] = ctx->argv[0];
                        continue;
                }
@@ -452,10 +451,11 @@ int parse_options(int argc, const char **argv, const char *prefix,
 {
        struct parse_opt_ctx_t ctx;
 
-       parse_options_start(&ctx, argc, argv, prefix, flags);
+       parse_options_start(&ctx, argc, argv, prefix, options, flags);
        switch (parse_options_step(&ctx, options, usagestr)) {
        case PARSE_OPT_HELP:
                exit(129);
+       case PARSE_OPT_NON_OPTION:
        case PARSE_OPT_DONE:
                break;
        default: /* PARSE_OPT_UNKNOWN */
@@ -541,7 +541,8 @@ static int usage_with_options_internal(struct parse_opt_ctx_t *ctx,
                if (opts->type == OPTION_NUMBER)
                        pos += fprintf(outfile, "-NUM");
 
-               if (!(opts->flags & PARSE_OPT_NOARG))
+               if ((opts->flags & PARSE_OPT_LITERAL_ARGHELP) ||
+                   !(opts->flags & PARSE_OPT_NOARG))
                        pos += usage_argh(opts, outfile);
 
                if (pos <= USAGE_OPTS_WIDTH)