autoconf: Add tests for memmem, strtoumax and mkdtemp functions

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

diff --git a/parse-options.c b/parse-options.c
index 15b32f741b6b8bf47321b9ce78da43e9378f22b3..d3e608ac45e2a0c6accb9d27ed8d407619cb70d2 100644 (file)
--- a/parse-options.c
+++ b/parse-options.c
@@ -40,24 +40,53 @@ 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 == '-')) {
@@ -70,13 +99,10 @@ 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 == '-'))
                        return (*opt->callback)(opt, NULL, 0);
                if (!arg)
@@ -84,7 +110,7 @@ static int get_value(struct optparse_t *p,
                return (*opt->callback)(opt, get_arg(p), 0);
 
        case OPTION_INTEGER:
-               if (flags & OPT_UNSET) {
+               if (unset) {
                        *(int *)opt->value = 0;
                        return 0;
                }
@@ -292,7 +318,7 @@ void usage_with_options(const char * const *usagestr,
                                        pos += fprintf(stderr, " ...");
                        }
                        break;
-               default:
+               default: /* OPTION_{BIT,BOOLEAN,SET_INT,SET_PTR} */
                        break;
                }
 
@@ -311,6 +337,7 @@ void usage_with_options(const char * const *usagestr,
 
 /*----- some often used options -----*/
 #include "cache.h"
+
 int parse_opt_abbrev_cb(const struct option *opt, const char *arg, int unset)
 {
        int v;