actube/src/cw/mavl_merge.c

77 lines
1.5 KiB
C
Raw Normal View History

/*
This file is part of libcapwap.
libcapwap is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
libcapwap is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Foobar. If not, see <http://www.gnu.org/licenses/>.
*/
#include "mavl.h"
/**
* @file
* @brief Implementation if mavl_merge.
* @{
*/
static void mavlnode_move(mavl_t m,mavl_t t, struct mavlnode *n)
{
struct mavlnode * mn = mavl_get_node(m,n->data);
if (mn) {
if (m->del) {
m->del(mn->data);
}
mn->data=n->data;
}
else{
mavl_add(m,n->data);
}
free(n);
t->count--;
}
static void mavl_merge0(mavl_t m, mavl_t t ,struct mavlnode * n)
{
if (!n)
return;
mavl_merge0(m,t,n->left);
mavl_merge0(m,t,n->right);
mavlnode_move(m,t,n);
}
/**
* Merge two MAVL Objects
*
* Move all elements in MAVL object t to MAVL object m. Delete all
* elements from MAVL object t. If an element from t already exists
* in m, it will be replaced.
*
* @param m target object
* @param t source object
*
*
*/
void mavl_merge(mavl_t m, mavl_t t)
{
mavl_merge0(m,t,t->root);
t->root=NULL;
}