NAME¶

libtar_list_new, libtar_list_free, libtar_list_next, libtar_list_prev, libtar_list_add, libtar_list_del, libtar_list_search, libtar_list_dup, libtar_list_merge, libtar_list_add_str - linked list routines

SYNOPSIS¶

#include <libtar.h>

libtar_list_t *libtar_list_new(int flags, int (*cmpfunc)());
void libtar_list_free(libtar_list_t *l, void (*freefunc)());
int libtar_list_add_str(libtar_list_t *l, char *str, char *delim);
int libtar_list_add(libtar_list_t *l, void *data);
void libtar_list_del(libtar_list_t *l, libtar_node_t **n);
int libtar_list_search(libtar_list_t *l, libtar_node_t **n, void *data, int (*matchfunc)());
int libtar_list_next(libtar_list_t *l, libtar_node_t **n);
int libtar_list_prev(libtar_list_t *l, libtar_node_t **n);
libtar_list_t *libtar_list_dup(libtar_list_t *l);
libtar_list_t *libtar_list_merge(int (*cmpfunc)(), int flags, libtar_list_t *list1, libtar_list_t *list2);

DESCRIPTION¶

The libtar_list_new() function creates a new list. The flags argument must be one of the following values:

LIST_USERFUNC

The cmpfunc argument points to a user-supplied function which determines the ordering of the list.

LIST_STACK

Use the list as a stack. New elements are added to the front of the list.

LIST_QUEUE

Use the list as a queue. New elements are added to the end of the list.

The libtar_list_free() function deallocates all memory associated with the list l. If freefunc is not NULL, it is called to free memory associated with each node in the list.

The libtar_list_add() function adds the element pointed to by data to the list l. The position of the new element will be determined by the flags passed to libtar_list_new() when the list was created.

The libtar_list_add_str() function tokenizes the string str using the delimiter characters in the string delim. The resulting tokens are added to list l using libtar_list_add().

The libtar_list_search() function searches for an element which matches data using the matching function matchfunc. If matchfunc is NULL, a default matching function designed for ASCII strings is used. Searching begins from the node pointed to by n.

The libtar_list_del() function removes the entry pointed to by n from the list pointed to by l.

The libtar_list_dup() function creates a copy of the list l using dynamically allocated memory.

The libtar_list_merge() function creates a new list with flags and cmpfunc, in the same way as libtar_list_new(). It then adds all elements from list1 and list2 using libtar_list_add().

RETURN VALUE¶

The libtar_list_new(), libtar_list_dup(), and libtar_list_merge() functions return a pointer to the new list structure, or NULL on error.

The libtar_list_next(), libtar_list_prev(), and libtar_list_search() functions return 1 when valid data is returned, or 0 otherwise.

The libtar_list_add() and libtar_list_add_str() functions return 0 on success, or -1 on error.

SEE ALSO¶

libtar_hash_new(3)