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<?php |
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/** |
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* This file is part of the m1\vars library |
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* |
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* (c) m1 <[email protected]> |
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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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* @package m1/vars |
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* @version 0.3.0 |
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* @author Miles Croxford <[email protected]> |
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* @copyright Copyright (c) Miles Croxford <[email protected]> |
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* @license http://github.com/m1/vars/blob/master/LICENSE |
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* @link http://github.com/m1/vars/blob/master/README.MD Documentation |
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*/ |
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namespace M1\Vars\Loader; |
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/** |
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* This file provides the loaders and extensions supported by Vars |
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* |
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* @since 0.1.1 |
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*/ |
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class LoaderProvider |
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{ |
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/** |
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* The available extensions |
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* |
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* @var array $extensions |
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*/ |
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private $extensions = array(); |
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/** |
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* The available loaders |
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* |
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* @var array $loaders |
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*/ |
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private $loaders = array(); |
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/** |
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* The constructor for LoaderProvider, makes the loaders and extensions |
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* |
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* @param array|null $options The options being used for Vars |
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* @param array $default_loaders The default loaders for Vars |
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*/ |
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public function __construct($options, $default_loaders) |
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{ |
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$this->makeLoaders($options, $default_loaders); |
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} |
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/** |
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* Get loaders and make extensions for the loaders |
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* |
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* @param array|null $options The options being used for Vars |
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* @param array $default_loaders The default loaders for Vars |
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*/ |
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private function makeLoaders($options, $default_loaders) |
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{ |
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$loaders = $this->preParseLoaders($options, $default_loaders); |
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$parsed_loaders = array(); |
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foreach ($loaders as $loader) { |
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if ($loader === 'default') { |
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$parsed_loaders = array_merge($parsed_loaders, $default_loaders); |
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} else { |
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$parsed_loaders[] = $loader; |
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} |
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} |
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$parsed_loaders = array_unique($parsed_loaders); |
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$this->loaders = $this->makeNameSpaceLoaders($parsed_loaders, $default_loaders); |
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$this->extensions = $this->makeExtensions($this->loaders); |
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} |
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/** |
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* Pre parse the loaders for use in make loaders |
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* |
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* @param array|null $options The options being used for Vars |
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* @param array $default_loaders The default loaders for Vars |
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* |
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* @return array The pre parsed loaders |
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*/ |
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private function preParseLoaders($options, $default_loaders) |
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{ |
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$loaders = array(); |
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if (is_array($options['loaders']) && !empty($options['loaders'])) { |
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$loaders = $options['loaders']; |
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} elseif (is_string($options['loaders'])) { |
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$loaders[] = $options['loaders']; |
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} else { |
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$loaders = $default_loaders; |
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} |
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return $loaders; |
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} |
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/** |
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* Makes namespace loaders from loader strings |
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* |
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* @param array $loaders The options being used for Vars |
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* @param array $default_loaders The default loaders for Vars |
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* |
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* @throws \InvalidArgumentException If a loader from options isn't found |
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* |
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* @return array The namespace loaders |
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*/ |
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private function makeNameSpaceLoaders($loaders, $default_loaders) |
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{ |
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$parsed_loaders = array(); |
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foreach ($loaders as $loader) { |
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if (in_array($loader, $default_loaders)) { |
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$loader = sprintf('%s\%sLoader', __NAMESPACE__, ucfirst(strtolower($loader))); |
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} |
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if (!class_exists($loader)) { |
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throw new \InvalidArgumentException(sprintf("'%s' loader class does not exist", $loader)); |
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} |
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$parsed_loaders[] = $loader; |
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} |
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return $parsed_loaders; |
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} |
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/** |
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* Get and make extensions for loaders made from makeLoaders() |
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* |
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* @see \M1\Vars\Vars::makeLoaders() \M1\Vars\Vars::makeLoaders() |
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* |
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* @param array $loaders File loaders |
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* |
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* @throws \RuntimeException If no loader extensions were found |
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* |
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* @return array File loader supported extensions |
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*/ |
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private function makeExtensions(array $loaders) |
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{ |
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$extensions = array(); |
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foreach ($loaders as $loader) { |
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$extensions = array_merge($extensions, $loader::$supported); |
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} |
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if (empty($extensions)) { |
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throw new \RuntimeException('No loader extensions were found'); |
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} |
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return $extensions; |
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} |
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/** |
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* Get the Vars file loaders |
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* |
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* @return array The Vars file loaders |
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*/ |
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public function getLoaders() |
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{ |
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return $this->loaders; |
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} |
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/** |
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* Get the Vars file loaders extensions |
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* |
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* @return array The Vars file loader extensions |
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*/ |
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public function getExtensions() |
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{ |
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return $this->extensions; |
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} |
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} |
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m1 /
Vars
