function testAutoCreateCD()
{
$tree = \arc\tree::expand();
$tree->cd('foo')->nodeValue = 'bar';
$collapsed = \arc\tree::collapse($tree);
$this->assertTrue($collapsed == array('/foo/' => 'bar'));
}
public function acquire($name)
{
return \arc\tree::dive($this->tree, function ($node) use($name) {
return $this->getValueIfRoot($name, $node->nodeValue);
}, function ($node, $result) use($name) {
return $this->mergeValue($result, $this->getValue($name, $node->nodeValue));
});
}
public static function getConfiguration()
{
$context = \arc\context::$context;
if (!$context->arcConfig) {
$context->arcConfig = new config\Configuration(\arc\tree::expand()->cd($context->arcPath));
}
return $context->arcConfig;
}
/**
* Factory method for the static stack. Returns the shared stack only. Use new \arc\events\Stack
* or your own factory method to create a seperate Stack instance.
*/
public static function getEventsTree()
{
$context = \arc\context::$context;
if (!$context->arcEvents) {
$context->arcEvents = new events\EventsTree(\arc\tree::expand()->cd($context->arcPath));
}
return $context->arcEvents;
}
public static function getGrantsTree()
{
$context = \arc\context::$context;
if (!$context->arcUser) {
$context->arcUser = '******';
}
if (!$context->arcGroups) {
$context->arcGroups = ['public'];
}
if (!$context->arcGrants) {
$context->arcGrants = new grants\GrantsTree(\arc\tree::expand()->cd($context->arcPath), $context->arcUser, $context->arcGroups);
}
return $context->arcGrants;
}
/**
* Calls the first callback method on each successive parent until a non-null value is returned. Then
* calls all the parents from that point back to this node with the second callback in reverse order.
* The first callback (dive) must accept one parameter, the node.
* The second callback (rise) must accept two parameters, the nde and the result up to that point.
* @param \arc\tree\Node $node A tree node, must have traversable childNodes property and a parentNode property
* @param callable $diveCallback The callback for the dive phase.
* @param callable $riseCallback The callback for the rise phase.
* @return mixed
*/
public static function dive($node, $diveCallback = null, $riseCallback = null)
{
$result = null;
if (is_callable($diveCallback)) {
$result = call_user_func($diveCallback, $node);
}
if (!isset($result) && $node->parentNode) {
$result = \arc\tree::dive($node->parentNode, $diveCallback, $riseCallback);
}
if (is_callable($riseCallback)) {
return call_user_func($riseCallback, $node, $result);
} else {
return $result;
}
}
/**
* Matches a path or url to a list of routes and calls the best matching route handler.
* @param string $path
* @param mixed $routes A tree of routes with handlers as nodeValue.
* @return array|bool
*/
public static function match($path, $routes)
{
$routes = \arc\tree::expand($routes);
$controller = \arc\tree::dive($routes->cd($path), function ($node) {
if (isset($node->nodeValue)) {
return $node;
}
});
if ($controller) {
$remainder = substr($path, strlen($controller->getPath()));
if (is_callable($controller->nodeValue)) {
$result = call_user_func($controller->nodeValue, $remainder);
} else {
$result = $controller->nodeValue;
}
return ['path' => $controller->getPath(), 'remainder' => $remainder, 'result' => $result];
}
return false;
}
/**
* @return string
*/
private function fetchGrants()
{
$user = $this->user;
$groups = array_fill_keys($this->groups, 1);
$grants = (string) \arc\tree::dive($this->tree, function ($node) use($user) {
if (isset($node->nodeValue['users'][$user])) {
return $node->nodeValue['users'][$user];
}
}, function ($node, $grants) use(&$user, $groups) {
if (!$user) {
// don't do this for user grants the first time
$grants = preg_replace(array('/\\=[^ ]*/', '/\\>([^ ]*)/'), array('', '$1'), $grants);
}
$user = false;
foreach ($groups as $group) {
if (isset($node->nodeValue['groups'][$group])) {
$grants .= $node->nodeValue['groups'][$group];
}
}
return $grants;
});
return $grants;
}
/**
* Converts a hash to a \arc\tree\NamedNode
* @param $hash
* @param null $parent
* @return tree\NamedNode|null
*/
public static function tree($hash, $parent = null)
{
if (!isset($parent)) {
$parent = \arc\tree::expand();
}
if (is_array($hash) || $hash instanceof \Traversable) {
foreach ($hash as $index => $value) {
$child = $parent->appendChild(self::escape($index));
if (is_array($value)) {
self::tree($value, $child);
} else {
$child->nodeValue = $value;
}
}
} else {
$parent->nodeValue = $hash;
}
return $parent;
}
/**
* Calls a callback method on each child of this node, returns an array with name => result pairs.
* The callback method must accept two parameters, the name of the child and the child node itself.
* @param callable $callback The callback method to run on each child.
* @return array An array of result values with the name of each child as key.
*/
public function ls($callback)
{
return \arc\tree::ls($this, $callback);
}
/**
* Calls each listener with the given event untill a listener returns false.
*/
private function walkListeners($event)
{
$callListeners = function ($listeners) use($event) {
foreach ((array) $listeners as $listener) {
$result = call_user_func($listener['method'], $event);
if ($result === false) {
return false;
// this will stop \arc\path::walk, so other event handlers won't be called
}
}
};
$result = \arc\tree::parents($this->tree, function ($node, $result) use($callListeners, $event) {
if ($result !== false && isset($node->nodeValue['capture.' . $event->name])) {
return call_user_func($callListeners, $node->nodeValue['capture.' . $event->name]);
}
});
if (!isset($result)) {
$result = \arc\tree::dive($this->tree, function ($node) use($callListeners, $event) {
if (isset($node->nodeValue['listen.' . $event->name])) {
return call_user_func($callListeners, $node->nodeValue['listen.' . $event->name]);
}
});
}
return !isset($result) ? true : false;
}
