state_t pback_getnew(node_t **node, int8_t dir)
{
state_t state;
node_t *tmp = *node,
*last;
while (true)
{
last = tmp;
tmp = node_traverse(tmp, dir, 1);
if ((tmp == NULL) /* no more tracks */
|| (tmp == last)) /* no more visible tracks */
break;
if (node_isleaf(tmp))
{
if (tmp->t->avail && tmp->t->sane) /* found a playable track */
break;
info("pback_getnew(): ignoring %s%s%s track %s.\n",
!tmp->t->avail ? "unavailable" : "",
!(tmp->t->avail || tmp->t->sane) ? " and " : "",
!tmp->t->sane ? "insane" : "",
tmp->t->fn);
}
else /* found a branch -- always 'playable' */
break;
}
if (tmp == *node) /* nowhere visible to go */
state = ERR_VIS;
else if (tmp == NULL) /* nowhere at all to go */
state = ERR_NULL;
else /* got a new track */
{
if (pback_should_cont(tmp, g_opts.tr.cont))
{
*node = tmp;
state = OK;
}
else
state = ERR_RULES;
}
return state;
}
static void wire_traverse (Wire *wire)
{
GSList *iter;
g_return_if_fail (wire != NULL);
g_return_if_fail (IS_WIRE (wire));
if (wire_is_visited (wire))
return;
wire_set_visited (wire, TRUE);
g_signal_emit_by_name (wire, "highlight");
for (iter = wire_get_nodes (wire); iter; iter = iter->next) {
Node *node = iter->data;
node_traverse (node);
}
}
void
node_traverse (node_t* node, void(*traverse_cb)(node_t*, gpointer), gpointer user_data)
{
GHashTableIter iter;
gpointer value;
g_assert(traverse_cb);
if (node == NULL) {
node = ROOT;
}
if (node) {
traverse_cb(node, user_data);
}
g_hash_table_iter_init (&iter, node->children);
while (g_hash_table_iter_next (&iter, NULL, &value)) {
node_traverse((node_t *)value, traverse_cb, user_data);
}
}
static void
wire_traverse (Wire *wire)
{
GSList *nodes;
g_return_if_fail (wire != NULL);
g_return_if_fail (IS_WIRE (wire));
if (wire_is_visited (wire))
return;
wire_set_visited (wire, TRUE);
g_signal_emit_by_name (wire, "highlight");
for (nodes = wire_get_nodes (wire); nodes; nodes = nodes->next) {
Node *node = nodes->data;
node_traverse (node);
}
g_slist_free_full (nodes, g_object_unref);
}