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NickelMenu-custom/src/menu.h
2020-04-22 13:01:55 -04:00

31 lines
960 B
C

#ifndef NMI_MENU_H
#define NMI_MENU_H
#ifdef __cplusplus
extern "C" {
#endif
#include <stddef.h>
typedef enum {
NMI_MENU_LOCATION_MAIN_MENU = 1,
NMI_MENU_LOCATION_READER_MENU = 2,
} nmi_menu_location_t;
typedef struct {
nmi_menu_location_t loc;
char *lbl;
char *arg;
int (*act)(const char *arg, char **out_err); // can block, must return 0 on success, nonzero with out_err set to the malloc'd error message on error
} nmi_menu_item_t;
// nmi_menu_hook hooks a dlopen'd libnickel handle to add the specified menus,
// and returns 0 on success, or 1 with err_out (if provided) set to the malloc'd
// error message on error. The provided configuration and all pointers it
// references must remain valid for the lifetime of the program (i.e. not stack
// allocated). It MUST NOT be called more than once.
int nmi_menu_hook(void *libnickel, nmi_menu_item_t **items, size_t items_n, char **err_out);
#ifdef __cplusplus
}
#endif
#endif