STATIC void lf_move_recs(Node_s *node, Node_s *sibling)
{
int i;
int j;
int size;
int total;
node_compact(node);
j = node->numrecs;
for (i = 0; i < sibling->numrecs; i++, j++) {
unint x = sibling->rec[i];
u8 *start = &((u8 *)sibling)[x];
size = start[sizeof(Key_t)];
size |= start[sizeof(Key_t) + 1] << 8;
size += sizeof(u16) + sizeof(Key_t);
total = size + sizeof(u16);
aver(total <= node->free);
node->end -= size;
node->rec[j] = node->end;
node->free -= total;
memmove(&((u8 *)node)[node->end], start, size);
++node->numrecs;
}
sibling->numrecs = 0;
sibling->free = BLOCK_SIZE - SZ_HEAD;
}
/* *nodeptr == node is the only pointer to the node from the parent! */
static gpointer radixtree_remove(liRadixNode **nodeptr, rdxBase *input, guint32 bits) {
liRadixNode **nextnode;
gpointer data;
rdxBase current, mask;
liRadixNode *node = *nodeptr;
if (!node) return NULL;
current = *input;
mask = RDX_MASK(node->width);
if (node->width > bits) return NULL; /* prefix longer than key */
if ((current & mask) != node->key) return NULL; /* doesn't match */
if (node->width == bits) { /* exact match */
data = node->data;
node->data = NULL;
node_compact(nodeptr, node);
return data;
}
if (mask & 0x1) {
/* next "layer" */
input++;
bits -= RDXBITS;
nextnode = (current & RDX_BIT(0)) ? &node->right : &node->left;
} else {
nextnode = (current & RDX_BIT(node->width)) ? &node->right : &node->left;
}
data = radixtree_remove(nextnode, input, bits);
if (data == NULL) return NULL; /* nothing deleted */
node_compact(nodeptr, node);
return data;
}
