EXPORT void set_node_doubly_linked_list(
INTERFACE *intfc)
{
NODE **n;
n = intfc->nodes;
first_node(intfc) = *n;
prev_node(*n) = NULL;
for (; *(n+1); ++n)
{
next_node(*n) = *(n+1);
prev_node(*(n+1)) = (*n);
}
last_node(intfc) = *n;
next_node(*n) = NULL;
} /*end set_node_doubly_linked_list*/
SparseNode crm114__list_search(unsigned int c, SparseNode init, SparseElementList *l)
{
SparseNode curr = init;
if (!l) {
if (CRM114__MATR_DEBUG_MODE) {
fprintf(stderr, "crm114__list_search: null list.\n");
}
return make_null_node(l->compact);
}
if (crm114__list_is_empty(l)) {
return make_null_node(l->compact);
}
if (c <= node_col(l->head)) {
return l->head;
}
if (c >= node_col(l->tail)) {
return l->tail;
}
while (!null_node(curr) && node_col(curr) < c) {
curr = next_node(curr);
}
while (!null_node(curr) && node_col(curr) > c) {
curr = prev_node(curr);
}
return curr;
}
EXPORT void print_linked_node_list(
INTERFACE *intfc)
{
NODE **n, *m;
int i, node_count;
n = intfc->nodes;
if (! n)
{
(void) printf("NULL node list on intfc\n");
return;
}
(void) printf("\tnode list - intfc %llu\n",(long long unsigned int)interface_number(intfc));
for (node_count = 0; n && *n; ++n, ++node_count)
;
m = first_node(intfc);
for (i = 0; i <= node_count + 2; ++i)
{
if (m != NULL)
{
(void) printf("prev %llu m %llu next %llu ",
(long long unsigned int)node_number(prev_node(m)),
(long long unsigned int)node_number(m),
(long long unsigned int)node_number(next_node(m)));
print_propagation_status(m);
}
else
break;
m = next_node(m);
}
} /*end print_linked_node_list*/
ScmDictEntry *Scm_TreeIterPrev(ScmTreeIter *iter)
{
if (iter->at_end) return NULL;
if (iter->e) {
iter->e = (ScmDictEntry*)prev_node((Node*)iter->e);
} else {
iter->e = Scm_TreeCoreGetBound(iter->t, SCM_TREE_CORE_MAX);
}
if (iter->e == NULL) iter->at_end = TRUE;
return iter->e;
}
void crm114__list_remove_elt(SparseElementList *l, SparseNode toremove) {
if (!l) {
if (CRM114__MATR_DEBUG_MODE) {
fprintf(stderr, "crm114__list_remove_elt: null list.\n");
}
return;
}
if (null_node(toremove)) {
return;
}
if (!null_node(prev_node(toremove))) {
if (l->compact) {
toremove.compact->prev->next = toremove.compact->next;
} else {
toremove.precise->prev->next = toremove.precise->next;
}
} else {
if (l->compact) {
l->head.compact = toremove.compact->next;
} else {
l->head.precise = toremove.precise->next;
}
}
if (!null_node(next_node(toremove))) {
if (l->compact) {
toremove.compact->next->prev = toremove.compact->prev;
} else {
toremove.precise->next->prev = toremove.precise->prev;
}
} else {
if (l->compact) {
l->tail.compact = toremove.compact->prev;
} else {
l->tail.precise = toremove.precise->prev;
}
}
if (l->compact) {
if (!(l->last_addr) || (void *)toremove.compact < (void *)l ||
(void *)toremove.compact >= l->last_addr) {
node_free(toremove);
}
} else {
if (!(l->last_addr) || (void *)toremove.precise < (void *)l ||
(void *)toremove.precise >= l->last_addr) {
node_free(toremove);
}
}
}
static Node *delete_node(ScmTreeCore *tc, Node *n)
{
while (n->left && n->right) {
/* N has both children. We swap N and its previous node.
It would be easier just to swap key and value, but it could
lead to a hard-to-track bug if a pointer to N is retained
in somewhere (e.g. iterator). So we actually swap the node. */
swap_node(tc, n, prev_node(n));
}
/* we have at most one child */
if (n->left) {
delete_node1(tc, n, n->left);
} else {
delete_node1(tc, n, n->right); /* this covers no child case */
}
clear_node(n);
return n;
}
static int
handle_input(int ch)
{
switch (ch)
{
case 'q':
quit_mode = quit_mode ? 0 : 1;
return 1;
case 0x1b:
quit_mode = 0;
print_help = 0;
return 1;
case 'y':
if (quit_mode)
exit(0);
break;
case 'n':
if (quit_mode) {
quit_mode = 0;
return 1;
}
break;
case 'f':
fold();
return 1;
case 12:
case KEY_CLEAR:
#ifdef HAVE_REDRAWWIN
redrawwin(stdscr);
#endif
clear();
return 1;
case 'c':
c_combined_node_list = c_combined_node_list ? 0 : 1;
return 1;
case 'S':
clear();
set_x_unit("s", 1);
return 1;
case 'M':
clear();
set_x_unit("m", 1);
return 1;
case 'H':
clear();
set_x_unit("h", 1);
return 1;
case 'D':
clear();
set_x_unit("d", 1);
return 1;
case 'R':
clear();
set_x_unit("r", 1);
return 1;
case '?':
clear();
print_help = print_help ? 0 : 1;
return 1;
case 'g':
c_graphical_in_list = c_graphical_in_list ? 0 : 1;
return 1;
case 'd':
c_detailed_in_list = c_detailed_in_list ? 0 : 1;
return 1;
case 'l':
c_list_in_list = c_list_in_list ? 0 : 1;
return 1;
case KEY_LEFT:
prev_node();
return 1;
case KEY_RIGHT:
next_node();
return 1;
case KEY_DOWN:
if (next_intf() == END_OF_LIST) {
if (next_node() != END_OF_LIST)
first_intf();
}
return 1;
case KEY_UP:
if (prev_intf() == END_OF_LIST) {
if (prev_node() != END_OF_LIST)
last_intf();
}
return 1;
default:
if (get_current_intf())
if (handle_bindings(ch, get_current_intf()->i_name))
return 1;
break;
}
return 0;
}
/* accessor */
Node *core_ref(ScmTreeCore *tc, intptr_t key, enum TreeOp op,
Node **lo, Node **hi)
{
Node *e = ROOT(tc), *n = NULL;
if (e == NULL) {
/* Tree is empty */
if (op == TREE_CREATE) {
n = new_node(NULL, key);
PAINT(n, BLACK);
SET_ROOT(tc, n);
tc->num_entries++;
}
if (op == TREE_NEAR) {
*lo = *hi = NULL;
}
return n;
}
for (;;) {
int r = 0;
if (tc->cmp) r = tc->cmp(tc, e->key, key);
if (tc->cmp? (r == 0) : (e->key == key)) {
/* Exact match */
if (op == TREE_DELETE) {
n = delete_node(tc, e);
tc->num_entries--;
return n;
}
if (op == TREE_NEAR) {
*lo = prev_node(e);
*hi = next_node(e);
}
return e;
}
if (tc->cmp? (r < 0) : (e->key < key)) {
/* Key is larger than E */
if (e->right) {
e = e->right;
} else {
if (op == TREE_CREATE) {
n = new_node(e, key);
e->right = n;
balance_tree(tc, n);
tc->num_entries++;
return n;
}
if (op == TREE_NEAR) {
*lo = e;
*hi = next_node(e);
}
return NULL;
}
} else {
/* Key is smaller than E */
if (e->left) {
e = e->left;
} else {
if (op == TREE_CREATE) {
n = new_node(e, key);
e->left = n;
balance_tree(tc, n);
tc->num_entries++;
return n;
}
if (op == TREE_NEAR) {
*hi = e;
*lo = prev_node(e);
}
return NULL;
}
}
}
}
std::vector<double> Graph::dijkstra(int source)
{
// stores the distance from source to each node
std::vector<double> distances(adjList.size());
// stores which nodes have been looked at
std::vector<bool> visited_nodes(adjList.size());
// stores the pervious node of each node in the optimal path
std::vector<int> prev_node(adjList.size());
// the compare function for the priority queue, the nodes are
// added to the queue along with there distance from the source
// and should be sorted by that distance
auto compare = [&] (std::pair<int, double> &n1,
std::pair<int, double> &n2) {
if (n1.second == -1) {
return false;
}
if (n2.second == -1) {
return true;
}
return n1.second < n2.second;
};
std::vector< std::pair<int, double> > node_queue(adjList.size());
// initialize distance to every node to infitity (-1 in this case
// since negative edge lengths arent used in this graph. add add every
// node to the queue of nodes
for (unsigned int i = 0; i < adjList.size(); i++) {
// the distance to the source item should be 0
if (i == source) {
distances[i] = 0;
} else {
distances[i] = -1;
prev_node[i] = -1;
}
node_queue[i] = (std::make_pair(i, distances[i]));
visited_nodes[i] = false;
}
// std::priority_queue does not have the ability to decrease the priority
// of an item, so we will use a simple array for this and just make it a heap
std::sort(node_queue.begin(), node_queue.end(), compare);
while (node_queue.size() != 0) {
// get the item in node_queue with the smallest distance
std::pair<int, double> node_pair = node_queue.front();
node_queue.erase(node_queue.begin());
int node1 = node_pair.first;
double dist = node_pair.second;
// mark this node as visited
visited_nodes[node1] = true;
// loop through every neighbor of this node
for (auto &edge : neighbors(node1)) {
int node2 = edge.dest;
// only look at this neighbor if it hasnt been looked at yet
if (visited_nodes[node2] == false) {
double temp_dist = distances[node1] + edge.cost;
// if this distance is smaller than our current best guess, update it
if (temp_dist < distances[node2] || distances[node2] < 0) {
distances[node2] = temp_dist;
prev_node[node2] = node1;
auto it = std::find_if(node_queue.begin(),
node_queue.end(),
[&] (const std::pair<int, double> &n) {
return n.first == node2;
});
// update the priority for this node, this check of < 0 must
// be done because -1 is used to represent a priority of infinity
if (it->second < 0) {
it->second = temp_dist;
} else {
it->second -= temp_dist;
}
// make sure the node_queue vector continues to act like a queue
std::sort(node_queue.begin(), node_queue.end(), compare);
}
}
}
}
return distances;
}
Self &operator--(int)
{
Self tmp = *this;
node = const_cast<TreeNode *>(prev_node(node));
return tmp;
}
Self &operator--()
{
node = const_cast<TreeNode *>(prev_node(node));
return *this;
}
Self operator--(int)
{
Self tmp = *this;
node = prev_node(node);
return tmp;
}
Self &operator--()
{
node = prev_node(node);
return *this;
}
EXPORT NODE *reorder_node_loop(
NODE *oldn,
NODE *newn)
{
INTERFACE *intfc;
NODE *next, *prev;
NODE *next_old_node;
if (oldn != NULL)
{
intfc = oldn->interface;
next = next_node(oldn);
if (next == NULL)
{
screen("ERROR in reorder_node_loop(), "
"next_node(oldn) == NULL\n");
print_node(oldn);
(void) printf("Old interface information\n");
print_linked_node_list(intfc);
print_interface(intfc);
if (newn != NULL)
{
intfc = newn->interface;
(void) printf("New interface information\n");
print_linked_node_list(intfc);
print_interface(intfc);
}
clean_up(ERROR);
}
prev = prev_node(oldn);
prev_node(next) = prev;
if (prev != NULL)
next_node(prev) = next;
else
first_node(intfc) = next;
next_node(last_node(intfc)) = oldn;
next_node(oldn) = NULL;
prev_node(oldn) = last_node(intfc);
last_node(intfc) = oldn;
next_old_node = next;
}
else
next_old_node = NULL;
if (newn != NULL)
{
intfc = newn->interface;
next = next_node(newn);
if (next == NULL)
{
screen("ERROR in reorder_node_loop(), "
"next_node(newn) == NULL\n");
print_node(newn);
if (oldn != NULL)
{
(void) printf("Old interface information\n");
print_linked_node_list(intfc);
print_interface(intfc);
}
intfc = newn->interface;
(void) printf("New interface information\n");
print_linked_node_list(intfc);
print_interface(intfc);
clean_up(ERROR);
}
prev = prev_node(newn);
prev_node(next) = prev;
if (prev != NULL)
next_node(prev) = next;
else
first_node(intfc) = next;
next_node(last_node(intfc)) = newn;
next_node(newn) = NULL;
prev_node(newn) = last_node(intfc);
last_node(intfc) = newn;
}
return next_old_node;
} /*end reorder_node_loop*/
static int handle_input(int ch)
{
switch (ch)
{
case 'q':
quit_mode = quit_mode ? 0 : 1;
return 1;
case 0x1b:
quit_mode = 0;
print_help = 0;
return 1;
case 'y':
if (quit_mode)
exit(0);
break;
case 'a':
next_attr();
return 1;
case 'n':
if (quit_mode)
quit_mode = 0;
else
new_graph();
return 1;
case 'x':
del_graph();
return 1;
case 'f':
fold();
return 1;
case 12:
case KEY_CLEAR:
#ifdef HAVE_REDRAWWIN
redrawwin(stdscr);
#endif
clear();
return 1;
case 'c':
c_combined_node_list = c_combined_node_list ? 0 : 1;
return 1;
case 'S':
clear();
set_graph_unit(X_SEC);
return 1;
case 'M':
clear();
set_graph_unit(X_MIN);
return 1;
case 'H':
clear();
set_graph_unit(X_HOUR);
return 1;
case 'D':
clear();
set_graph_unit(X_DAY);
return 1;
case 'R':
clear();
set_graph_unit(X_READ);
return 1;
case '?':
clear();
print_help = print_help ? 0 : 1;
return 1;
case 'g':
c_graphical_in_list = c_graphical_in_list ? 0 : 1;
return 1;
case 'd':
c_detailed_in_list = c_detailed_in_list ? 0 : 1;
return 1;
case 'l':
c_list_in_list = c_list_in_list ? 0 : 1;
return 1;
case KEY_PPAGE:
if (print_help)
help_page = help_page ? 0 : 1;
else
prev_node();
return 1;
case KEY_NPAGE:
if (print_help)
help_page = help_page ? 0 : 1;
else
next_node();
return 1;
case KEY_DOWN:
if (next_item() == END_OF_LIST) {
if (next_node() != END_OF_LIST)
first_item();
}
return 1;
case KEY_UP:
if (prev_item() == END_OF_LIST) {
if (prev_node() != END_OF_LIST)
last_item();
}
return 1;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
goto_item(ch - 48);
return 1;
case '>':
next_graph();
return 1;
case '<':
prev_graph();
return 1;
default:
if (get_current_item())
if (handle_bindings(ch, get_current_item()->i_name))
return 1;
break;
}
return 0;
}