array(-42 => true, 3 => true, 4 => false)) * or an equivalent JSON encoded string, or an object where properties are arrays. * * @param mixed $input A JSON format string (probably from the database) or a nested array. * * @since 11.1 */ public function __construct($input = '') { // Convert in input to an array. if (is_string($input)) { $input = json_decode($input, true); } elseif (is_object($input)) { $input = (array) $input; } if (is_array($input)) { // Top level keys represent the actions. foreach ($input as $action => $identities) { $this->mergeAction($action, $identities); } } } /** * Get the data for the action. * * @return array A named array of Rule objects. * * @since 11.1 */ public function getData() { return $this->data; } /** * Method to merge a collection of Rules. * * @param mixed $input Rule or array of Rules * * @return void * * @since 11.1 */ public function mergeCollection($input) { // Check if the input is an array. if (is_array($input)) { foreach ($input as $actions) { $this->merge($actions); } } } /** * Method to merge actions with this object. * * @param mixed $actions Rule object, an array of actions or a JSON string array of actions. * * @return void * * @since 11.1 */ public function merge($actions) { if (is_string($actions)) { $actions = json_decode($actions, true); } if (is_array($actions)) { foreach ($actions as $action => $identities) { $this->mergeAction($action, $identities); } } elseif ($actions instanceof Rules) { $data = $actions->getData(); foreach ($data as $name => $identities) { $this->mergeAction($name, $identities); } } } /** * Merges an array of identities for an action. * * @param string $action The name of the action. * @param array $identities An array of identities * * @return void * * @since 11.1 */ public function mergeAction($action, $identities) { if (isset($this->data[$action])) { // If exists, merge the action. $this->data[$action]->mergeIdentities($identities); } else { // If new, add the action. $this->data[$action] = new Rule($identities); } } /** * Checks that an action can be performed by an identity. * * The identity is an integer where +ve represents a user group, * and -ve represents a user. * * @param string $action The name of the action. * @param mixed $identity An integer representing the identity, or an array of identities * * @return mixed Object or null if there is no information about the action. * * @since 11.1 */ public function allow($action, $identity) { // Check we have information about this action. if (isset($this->data[$action])) { return $this->data[$action]->allow($identity); } return; } /** * Get the allowed actions for an identity. * * @param mixed $identity An integer representing the identity or an array of identities * * @return \JObject Allowed actions for the identity or identities * * @since 11.1 */ public function getAllowed($identity) { // Sweep for the allowed actions. $allowed = new \JObject; foreach ($this->data as $name => &$action) { if ($action->allow($identity)) { $allowed->set($name, true); } } return $allowed; } /** * Magic method to convert the object to JSON string representation. * * @return string JSON representation of the actions array * * @since 11.1 */ public function __toString() { $temp = array(); foreach ($this->data as $name => $rule) { if ($data = $rule->getData()) { $temp[$name] = $data; } } return json_encode($temp, JSON_FORCE_OBJECT); } }
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