/*
void cxml_node_free(CLOG_INFO* info, void * data) {
CXMLNODE *node = (CXMLNODE*) data;
*/
void cxml_node_free(CLOG_INFO* info, CXMLNODE **node) {
dnode_t *dn = NULL;
if(NULL==node || NULL==*node) {
return;
}
clog( info, CTRACE, "XML: xml_node_free(), free the attributes");
// free the attributes
if(NULL!=(*node)->att) {
if(!dict_isempty((*node)->att)) {
for (dn = dict_first((*node)->att); dn; dn = dict_next((*node)->att, dn)) {
char *key=(char*)dnode_getkey(dn);
char *data=(char*)dnode_get(dn);
if(NULL!=key) free(key); key=NULL;
if(NULL!=data) free(data); data=NULL;
}
}
dict_free_nodes((*node)->att);
dict_destroy((*node)->att);
(*node)->att=NULL;
}
clog( info, CTRACE, "XML: xml_node_free(), free the name");
// free the name
if(NULL!=(*node)->name) cstring_free(&((*node)->name));
clog( info, CTRACE, "XML: xml_node_free(), free the data");
// free the data
if(NULL!=(*node)->data) cstring_free(&((*node)->data));
clog( info, CTRACE, "XML: xml_node_free(), free the subs");
// free the children
if(NULL!=(*node)->sub) {
if(!dict_isempty((*node)->sub)) {
for (dn = dict_first((*node)->sub); dn; dn = dict_next((*node)->sub, dn)) {
char *key=(char*)dnode_getkey(dn);
CXMLNODE *data=(CXMLNODE*)dnode_get(dn);
if(NULL!=key) free(key); key=NULL;
cxml_node_free(info, &data);
}
}
dict_free_nodes((*node)->sub);
dict_destroy((*node)->sub);
(*node)->sub=NULL;
}
free((*node));
(*node)=NULL;
node=NULL;
}
/*
* Free a dynamically allocated dictionary object. Removing the nodes
* from the tree before deleting it is required.
*/
void fc_solve_kaz_tree_destroy(dict_t *dict)
{
assert (dict_isempty(dict));
fc_solve_compact_allocator_finish(&(dict->dict_allocator));
free(dict);
}
dnode_t *dict_delete(dict_t *dict, dnode_t *target)
{
dnode_t *nil = dict_nil(dict), *child, *delparent = target->parent;
/* basic deletion */
assert (!dict_isempty(dict));
assert (dict_contains(dict, target));
/*
* If the node being deleted has two children, then we replace it with its
* successor (i.e. the leftmost node in the right subtree.) By doing this,
* we avoid the traditional algorithm under which the successor's key and
* value *only* move to the deleted node and the successor is spliced out
* from the tree. We cannot use this approach because the user may hold
* pointers to the successor, or nodes may be inextricably tied to some
* other structures by way of embedding, etc. So we must splice out the
* node we are given, not some other node, and must not move contents from
* one node to another behind the user's back.
*/
if (target->left != nil && target->right != nil) {
dnode_t *next = dict_next(dict, target);
dnode_t *nextparent = next->parent;
dnode_color_t nextcolor = next->color;
assert (next != nil);
assert (next->parent != nil);
assert (next->left == nil);
/*
* First, splice out the successor from the tree completely, by
* moving up its right child into its place.
*/
child = next->right;
child->parent = nextparent;
if (nextparent->left == next) {
nextparent->left = child;
} else {
assert (nextparent->right == next);
nextparent->right = child;
}
/*
* Now that the successor has been extricated from the tree, install it
* in place of the node that we want deleted.
*/
next->parent = delparent;
next->left = target->left;
next->right = target->right;
next->left->parent = next;
next->right->parent = next;
next->color = target->color;
target->color = nextcolor;
if (delparent->left == target) {
delparent->left = next;
} else {
assert (delparent->right == target);
delparent->right = next;
}
} else {
assert (target != nil);
assert (target->left == nil || target->right == nil);
child = (target->left != nil) ? target->left : target->right;
child->parent = delparent = target->parent;
if (target == delparent->left) {
delparent->left = child;
} else {
assert (target == delparent->right);
delparent->right = child;
}
}
target->parent = NULL;
target->right = NULL;
target->left = NULL;
dict->nodecount--;
assert (verify_bintree(dict));
/* red-black adjustments */
if (target->color == dnode_black) {
dnode_t *parent, *sister;
dict_root(dict)->color = dnode_red;
while (child->color == dnode_black) {
parent = child->parent;
if (child == parent->left) {
sister = parent->right;
assert (sister != nil);
if (sister->color == dnode_red) {
sister->color = dnode_black;
parent->color = dnode_red;
rotate_left(parent);
sister = parent->right;
assert (sister != nil);
}
if (sister->left->color == dnode_black
&& sister->right->color == dnode_black) {
sister->color = dnode_red;
child = parent;
} else {
if (sister->right->color == dnode_black) {
assert (sister->left->color == dnode_red);
sister->left->color = dnode_black;
sister->color = dnode_red;
rotate_right(sister);
sister = parent->right;
assert (sister != nil);
}
sister->color = parent->color;
sister->right->color = dnode_black;
parent->color = dnode_black;
rotate_left(parent);
break;
}
} else { /* symmetric case: child == child->parent->right */
assert (child == parent->right);
sister = parent->left;
assert (sister != nil);
if (sister->color == dnode_red) {
sister->color = dnode_black;
parent->color = dnode_red;
rotate_right(parent);
sister = parent->left;
assert (sister != nil);
}
if (sister->right->color == dnode_black
&& sister->left->color == dnode_black) {
sister->color = dnode_red;
child = parent;
} else {
if (sister->left->color == dnode_black) {
assert (sister->right->color == dnode_red);
sister->right->color = dnode_black;
sister->color = dnode_red;
rotate_left(sister);
sister = parent->left;
assert (sister != nil);
}
sister->color = parent->color;
sister->left->color = dnode_black;
parent->color = dnode_black;
rotate_right(parent);
break;
}
}
}
child->color = dnode_black;
dict_root(dict)->color = dnode_black;
}
assert (dict_verify(dict));
return target;
}
/*
* Free a dynamically allocated dictionary object. Removing the nodes
* from the tree before deleting it is required.
*/
void dict_destroy(dict_t *dict)
{
assert (dict_isempty(dict));
free(dict);
}
static void construct(dict_t *d)
{
input_t in;
int done = 0;
dict_load_t dl;
dnode_t *dn;
char *tok1, *tok2, *val;
const char *key;
char *help =
"p turn prompt on\n"
"q finish construction\n"
"a <key> <val> add new entry\n";
if (!dict_isempty(d))
puts("warning: dictionary not empty!");
dict_load_begin(&dl, d);
while (!done) {
if (prompt)
putchar('>');
fflush(stdout);
if (!fgets(in, sizeof(input_t), stdin))
break;
switch (in[0]) {
case '?':
puts(help);
break;
case 'p':
prompt = 1;
break;
case 'q':
done = 1;
break;
case 'a':
if (tokenize(in+1, &tok1, &tok2, (char **) 0) != 2) {
puts("what?");
break;
}
key = dupstring(tok1);
val = dupstring(tok2);
dn = dnode_create(val);
if (!key || !val || !dn) {
puts("out of memory");
free((void *) key);
free(val);
if (dn)
dnode_destroy(dn);
}
dict_load_next(&dl, dn, key);
break;
default:
putchar('?');
putchar('\n');
break;
}
}
dict_load_end(&dl);
}
void dict_load_begin(dict_load_t *load, dict_t *dict)
{
assert (dict_isempty(dict));
load_begin_internal(load, dict);
}
