string_list: add function string_list_append_nodup()
Add a new function that appends a string to a string_list without
copying it. This can be used to pass ownership of an already-copied
string to a string_list that has strdup_strings set.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/string-list.c b/string-list.c
index d9810ab..ad2aa5a 100644
--- a/string-list.c
+++ b/string-list.c
@@ -148,13 +148,23 @@
printf("%s:%p\n", p->items[i].string, p->items[i].util);
}
-struct string_list_item *string_list_append(struct string_list *list, const char *string)
+struct string_list_item *string_list_append_nodup(struct string_list *list,
+ char *string)
{
+ struct string_list_item *retval;
ALLOC_GROW(list->items, list->nr + 1, list->alloc);
- list->items[list->nr].string =
- list->strdup_strings ? xstrdup(string) : (char *)string;
- list->items[list->nr].util = NULL;
- return list->items + list->nr++;
+ retval = &list->items[list->nr++];
+ retval->string = string;
+ retval->util = NULL;
+ return retval;
+}
+
+struct string_list_item *string_list_append(struct string_list *list,
+ const char *string)
+{
+ return string_list_append_nodup(
+ list,
+ list->strdup_strings ? xstrdup(string) : (char *)string);
}
static int cmp_items(const void *a, const void *b)
