From: Frieder Schrempf frieder.schrempf@kontron.de
In order to make it possible to auto select a default entry by matching the data of the menu entries by an external matching function, we add some helpers and expose the menu_set_default_by_item_data_match() function.
Signed-off-by: Frieder Schrempf frieder.schrempf@kontron.de --- Changes in v2: * Keep the menu structs private and instead only expose one additional function, that sets the default by calling an external matching function on each entry. * Change the title and commit message to reflect the changes. --- common/menu.c | 40 ++++++++++++++++++++++++++++++++++++++++ include/menu.h | 3 +++ 2 files changed, 43 insertions(+)
diff --git a/common/menu.c b/common/menu.c index 7b66d199a9..3833b8a237 100644 --- a/common/menu.c +++ b/common/menu.c @@ -160,6 +160,46 @@ static inline struct menu_item *menu_item_by_key(struct menu *m, return menu_items_iter(m, menu_item_key_match, item_key); }
+/* + * Find the first matching item, if any exists by calling a matching function + * on the items data field. + */ +static inline struct menu_item *menu_item_by_matching_fn(struct menu *m, + int match(void *, void *), void * extra) +{ + struct list_head *pos, *n; + struct menu_item *item; + int ret; + + list_for_each_safe(pos, n, &m->items) { + item = list_entry(pos, struct menu_item, list); + if (item->key) { + ret = match(item->data, extra); + if (ret == 1) + return item; + } + } + + return NULL; +} + +/* + * Select the menus default entry based on matching the data field of the menu + * items by calling a matching function. + */ +int menu_set_default_by_item_data_match(struct menu *m, + int match(void *, void *), void *extra, char **key) +{ + struct menu_item *item = menu_item_by_matching_fn(m, match, extra); + + if (!item) + return -ENOENT; + + *key = item->key; + m->default_item = item; + return 0; +} + /* * Set *choice to point to the default item's data, if any default item was * set, and returns 1. If no default item was set, returns -ENOENT. diff --git a/include/menu.h b/include/menu.h index 2d227c20bd..0a8b41a905 100644 --- a/include/menu.h +++ b/include/menu.h @@ -18,6 +18,9 @@ int menu_item_add(struct menu *m, char *item_key, void *item_data); int menu_destroy(struct menu *m); void menu_display_statusline(struct menu *m); int menu_default_choice(struct menu *m, void **choice); +int menu_set_default_by_item_data_match(struct menu *m, + int match(void *, void *), void *extra, + char **key);
/** * menu_show() Show a boot menu