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- /*
- * 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-cmp.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 KVLIST_INIT(_name, _get_len) \
- { \
- .avl = AVL_TREE_INIT(_name.avl, avl_strcmp, false, NULL), \
- .get_len = _get_len \
- }
- #define KVLIST(_name, _get_len) \
- struct kvlist _name = KVLIST_INIT(_name, _get_len)
- #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);
- bool 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
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