54 lines
2 KiB
C
54 lines
2 KiB
C
/*
|
|
* kvlist - simple key/value store
|
|
*
|
|
* Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
#ifndef __LIBUBOX_KVLIST_H
|
|
#define __LIBUBOX_KVLIST_H
|
|
|
|
#include "avl.h"
|
|
|
|
struct kvlist {
|
|
struct avl_tree avl;
|
|
|
|
int (*get_len)(struct kvlist *kv, const void *data);
|
|
};
|
|
|
|
struct kvlist_node {
|
|
struct avl_node avl;
|
|
|
|
char data[0] __attribute__((aligned(4)));
|
|
};
|
|
|
|
#define __ptr_to_kv(_ptr) container_of(((char *) (_ptr)), struct kvlist_node, data[0])
|
|
#define __avl_list_to_kv(_l) container_of(_l, struct kvlist_node, avl.list)
|
|
|
|
#define kvlist_for_each(kv, name, value) \
|
|
for (value = (void *) __avl_list_to_kv((kv)->avl.list_head.next)->data, \
|
|
name = (const char *) __ptr_to_kv(value)->avl.key, (void) name; \
|
|
&__ptr_to_kv(value)->avl.list != &(kv)->avl.list_head; \
|
|
value = (void *) (__avl_list_to_kv(__ptr_to_kv(value)->avl.list.next))->data, \
|
|
name = (const char *) __ptr_to_kv(value)->avl.key)
|
|
|
|
void kvlist_init(struct kvlist *kv, int (*get_len)(struct kvlist *kv, const void *data));
|
|
void kvlist_free(struct kvlist *kv);
|
|
void *kvlist_get(struct kvlist *kv, const char *name);
|
|
void kvlist_set(struct kvlist *kv, const char *name, const void *data);
|
|
bool kvlist_delete(struct kvlist *kv, const char *name);
|
|
|
|
int kvlist_strlen(struct kvlist *kv, const void *data);
|
|
int kvlist_blob_len(struct kvlist *kv, const void *data);
|
|
|
|
#endif
|