int main(void) {
preparation_t queries[] = {
{ "rate",
"SELECT connectionStrength((select id from mode),$2,$1)" },
{ "getpage",
"select strength,title,songs.id from connections inner join songs on connections.blue = songs.id where red = (select id from mode) order by strength desc OFFSET $1 LIMIT $2;" }
};
PQinit();
gtk_init(NULL,NULL);
prepareQueries(queries);
GtkBuilder* builder = gtk_builder_new_from_string(gladeFile,gladeFileSize);
GtkWidget* top = GTK_WIDGET(gtk_builder_get_object(builder,"top"));
GtkTreeSelection* selection = GTK_TREE_SELECTION(
gtk_builder_get_object(builder,"song-selection"));
GtkButton* rateup = GTK_BUTTON(
gtk_builder_get_object(builder,"rateup"));
GtkButton* ratedown = GTK_BUTTON(
gtk_builder_get_object(builder,"ratedown"));
g_signal_connect(G_OBJECT(rateup),"clicked",G_CALLBACK(yay),selection);
g_signal_connect(G_OBJECT(ratedown),"clicked",G_CALLBACK(nay),selection);
GtkListStore* model = GTK_LIST_STORE(
gtk_builder_get_object(builder,"songs"));
fillNext(selection,model);
gtk_widget_show_all(top);
gtk_main();
}
void GRAPHmstP2 (Graph G, Vertex parnt[], double cst[]) {
Vertex v, w, fr[maxV];
link p;
GRAPHmaxcst(G);
for (v = 0; v < G->V; v++) {
cst[v] = INFINITO;
parnt[v] = -1;
}
PQinit(G->V);
cst[0] = 0;
fr[0] = 0;
PQinsert(0);
while (!PQempty()) {
v = PQdelmin(cst);
parnt[v] = fr[v];
for (p=G->adj[v];p!=NULL;p=p->next){
w = p->w;
if (parnt[w] == -1){
if (cst[w] == INFINITO){
cst[w] = p->cst;
fr[w] = v;
PQinsert(w);
}
else if (cst[w] > p->cst){
cst[w] = p->cst;
fr[w] = v;
}
}
}
}
}
void dijkstra(Digraph G, Vertex s){
Vertex v, w; link p;
for (v = 0; v < G->V; v++) {
cst[v] = INFINITO;
parnt[v] = -1;
}
PQinit(G->V);
cst[s] = 0;
parnt[s] = s;
PQinsert(s);
while (!PQempty()) {
v = PQdelmin();
for(p=G->adj[v];p!=NULL;p=p->next)
if(cst[w=p->w]==INFINITO){
cst[w]=cst[v]+p->cst;
parnt[w]=v;
PQinsert(w);
}else if(cst[w]>cst[v]+p->cst){
cst[w]=cst[v]+p->cst;
parnt[w] = v;
PQdec(w);
}
}
PQfree();
}
void dijkstra(Graph G, Vertex s, Vertex parnt[], double cst[]) {
Vertex v, w;
link p;
GRAPHmaxcst(G);
for (v = 0; v < G->V; v++) {
cst[v] = INFINITO;
parnt[v] = -1;
}
PQinit(G->V);
cst[s] = 1;
parnt[s] = s;
PQinsert(s);
while (!PQempty()) {
v = PQdelmax(cst);
for(p=G->adj[v];p!=NULL;p=p->next) {
if (cst[w=p->w]==INFINITO) {
cst[w]=cst[v]*p->cst;
parnt[w]=v;
PQinsert(w);
}
else if(cst[w]<cst[v]*p->cst) {
cst[w]=cst[v]*p->cst;
parnt[w] = v;
}
}
}
PQfree();
}
void GRAPHpfs(Graph G, int st[], double wt[]) {
link t;
int v, w;
PQinit();
priority = wt;
for (v = 0; v < G->V; v++){
st[v] = -1;
fr[v] = -1;
}
fr[0] = 0;
PQinsert(0);
while (!PQempty())
{
v = PQdelmin(); st[v] = fr[v];
for (t = G->adj[v]; t != NULL; t = t->next)
if (fr[w = t->v] == -1){
wt[w] = P;
PQinsert(w);
fr[w] = v;
}
else if ((st[w] == -1) && (P < wt[w])){
wt[w] = P;
PQdec(w);
fr[w] = v;
}
}
}
int
shortPath (sgraph* g, snode* from, snode* to)
{
snode* n;
sedge* e;
snode* adjn;
int d;
int x, y;
for (x = 0; x<g->nnodes; x++) {
snode* temp;
temp = &(g->nodes[x]);
N_VAL(temp) = UNSEEN;
}
PQinit();
if (PQ_insert (from)) return 1;
N_DAD(from) = NULL;
N_VAL(from) = 0;
while ((n = PQremove())) {
#ifdef DEBUG
fprintf (stderr, "process %d\n", n->index);
#endif
N_VAL(n) *= -1;
if (n == to) break;
for (y=0; y<n->n_adj; y++) {
e = &(g->edges[n->adj_edge_list[y]]);
adjn = adjacentNode(g, e, n);
if (N_VAL(adjn) < 0) {
d = -(N_VAL(n) + E_WT(e));
if (N_VAL(adjn) == UNSEEN) {
#ifdef DEBUG
fprintf (stderr, "new %d (%d)\n", adjn->index, -d);
#endif
N_VAL(adjn) = d;
if (PQ_insert(adjn)) return 1;
N_DAD(adjn) = n;
N_EDGE(adjn) = e;
}
else {
if (N_VAL(adjn) < d) {
#ifdef DEBUG
fprintf (stderr, "adjust %d (%d)\n", adjn->index, -d);
#endif
PQupdate(adjn, d);
N_DAD(adjn) = n;
N_EDGE(adjn) = e;
}
}
}
}
}
/* PQfree(); */
return 0;
}
void PQsort(Item a[], int l, int r)
{
int k;
PQinit(r-l);
for (k = l; k <= r; k++)
PQinsert(a[k]);
for (k = r; k >=l; k--)
a[k] = PQdelmax();
}
/* triPath:
* Find the shortest path with lengths in g from
* v0 to v1. The returned vector (dad) encodes the
* shorted path from v1 to v0. That path is given by
* v1, dad[v1], dad[dad[v1]], ..., v0.
*/
static int *
triPath(tgraph * g, int n, int v0, int v1, PQ * pq)
{
int i, j, adjn;
double d;
tnode *np;
tedge *e;
int *dad = N_NEW(n, int);
for (i = 0; i < pq->PQsize; i++)
N_VAL(pq, i) = UNSEEN;
PQinit(pq);
N_DAD(v0) = -1;
N_VAL(pq, v0) = 0;
PQinsert(pq, v0);
while ((i = PQremove(pq)) != -1) {
N_VAL(pq, i) *= -1;
if (i == v1)
break;
np = g->nodes + i;
for (j = 0; j < np->ne; j++) {
e = g->edges + np->edges[j];
if (e->t == i)
adjn = e->h;
else
adjn = e->t;
if (N_VAL(pq, adjn) < 0) {
d = -(N_VAL(pq, i) + E_WT(e));
if (N_VAL(pq, adjn) == UNSEEN) {
N_VAL(pq, adjn) = d;
N_DAD(adjn) = i;
PQinsert(pq, adjn);
} else if (N_VAL(pq, adjn) < d) {
PQupdate(pq, adjn, d);
N_DAD(adjn) = i;
}
}
}
}
return dad;
}