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<?php |
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/** |
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* \AppserverIo\Server\Utils\ServerUtil |
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* |
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* NOTICE OF LICENSE |
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* |
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* This source file is subject to the Open Software License (OSL 3.0) |
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* that is available through the world-wide-web at this URL: |
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* http://opensource.org/licenses/osl-3.0.php |
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* |
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* PHP version 5 |
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* |
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* @author Tim Wagner <[email protected]> |
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* @copyright 2016 TechDivision GmbH <[email protected]> |
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* @license http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0) |
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* @link https://github.com/appserver-io/server |
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* @link http://www.appserver.io |
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*/ |
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namespace AppserverIo\Server\Utils; |
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/** |
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* Utility implementation that provides some useful functionality. |
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* |
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* @author Tim Wagner <[email protected]> |
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* @copyright 2016 TechDivision GmbH <[email protected]> |
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* @license http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0) |
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* @link https://github.com/appserver-io/server |
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* @link http://www.appserver.io |
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*/ |
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class ServerUtil |
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{ |
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/** |
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* Contains possible string to boolean mappings. |
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* |
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* @var array |
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*/ |
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protected $booleanValues = array(); |
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/** |
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* The singleton instance. |
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* |
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* @var \AppserverIo\Server\Utils\ServerUtil |
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*/ |
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protected static $singleton; |
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/** |
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* Initializes the utility instance. |
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*/ |
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protected function __construct() |
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{ |
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// initialize the string to boolean mappings |
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$this->booleanValues = array( |
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true => true, |
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false => false, |
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1 => true, |
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0 => false, |
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"1" => true, |
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"0" => false, |
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"true" => true, |
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"false" => false, |
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"on" => true, |
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"off" => false, |
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"yes" => true, |
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"no" => false, |
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"y" => true, |
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"n" => false |
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); |
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} |
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/** |
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* Create's and return's the singleton instance. |
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* |
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* @return \AppserverIo\Server\Utils\ServerUtil The singleton instance |
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*/ |
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public static function singleton() |
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{ |
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// query whether or not the instance already exists |
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if (ServerUtil::$singleton == null) { |
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ServerUtil::$singleton = new ServerUtil(); |
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} |
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// return the singleton instance |
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return ServerUtil::$singleton; |
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} |
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/** |
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* Cast's the passed scalar value to the passed type. |
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* |
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* @param string $type The type the value has been casted to |
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* @param string $value The value to cast |
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* |
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* @return mixed The casted value |
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* @throws \Exception Is thrown if the passed value can't be casted |
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*/ |
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public function castToType($type, $value) |
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{ |
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// query whether or not, the passed value is a scalar type |
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if (is_scalar($value) === false) { |
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throw new \Exception('Passed value is not of scalar type'); |
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} |
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// query the parameters type |
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switch ($type) { |
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case 'bool': |
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case 'boolean': |
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if (isset($this->booleanValues[$value])) { |
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$value = $this->booleanValues[$value]; |
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} else { |
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throw new \Exception(sprintf('Can\'t cast %s to boolean', $value)); |
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} |
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break; |
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default: |
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// all other can go the same way |
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if (settype($value, $type) === false) { |
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throw new \Exception(sprintf('Can\'t cast %s to %s', $value, type)); |
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} |
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} |
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// return the casted value |
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return $value; |
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} |
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} |
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appserver-io /
server
