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<?php |
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/** |
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* This file is part of slick/filter package |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Slick\Filter; |
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use Slick\Filter\Exception\InvalidArgumentException; |
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/** |
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* Static Filter: Filter factory utility |
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* |
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* @package Slick\Filter |
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* @author Filipe Silva <[email protected]> |
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*/ |
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final class StaticFilter |
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{ |
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/** |
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* @var array List of available filter |
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*/ |
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public static $filters = [ |
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'text' => 'Slick\Filter\Text', |
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'htmlEntities' => 'Slick\Filter\HtmlEntities', |
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'number' => 'Slick\Filter\Number', |
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'url' => 'Slick\Filter\Url' |
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]; |
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/** |
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* Creates the filter in the alias or class name and applies it to the |
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* provided value. |
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* |
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* @param string $alias Filter alias or FQ class name |
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* @param mixed $value Value to filter |
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* |
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* @throws InvalidArgumentException If the class does not exists or if |
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* class does not implements the FilterInterface. |
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* |
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* @return mixed |
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*/ |
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public static function filter($alias, $value) |
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{ |
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$filter = self::create($alias); |
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return $filter->filter($value); |
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} |
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/** |
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* Creates the filter object for provided alias or FQ class name |
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* |
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* @param string $filter Filter alias od FQ class name |
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* |
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* @throws InvalidArgumentException If the class does not exists or if |
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* class does not implements the FilterInterface. |
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* |
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* @return FilterInterface |
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*/ |
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public static function create($filter) |
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{ |
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$class = self::getClass($filter); |
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self::checkFilter($class); |
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return new $class(); |
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} |
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/** |
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* Returns the class name for provided alias |
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* |
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* @param string $alias The FQ class name or one of known filter alias |
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* @return string |
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* |
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* @throws InvalidArgumentException If the class does not exists. |
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*/ |
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protected static function getClass($alias) |
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{ |
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if (array_key_exists($alias, self::$filters)) { |
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return self::$filters[$alias]; |
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} |
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if (!class_exists($alias)) { |
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throw new InvalidArgumentException( |
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"Class {$alias} does not exists." |
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); |
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} |
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return $alias; |
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} |
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/** |
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* Verifies is provided class implements the FilterInterface interface |
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* |
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* @param string $class |
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* |
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* @throws InvalidArgumentException |
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* If the class does not implements the interface. |
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*/ |
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protected static function checkFilter($class) |
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{ |
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if (!is_subclass_of($class, 'Slick\Filter\FilterInterface')) { |
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throw new InvalidArgumentException( |
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"Class {$class} does not implements the ". |
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"Slick\\Filter\\FilterInterface interface." |
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); |
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} |
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} |
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} |
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