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<?php |
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/* |
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* This file is part of the ICanBoogie package. |
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* |
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* (c) Olivier Laviale <[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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namespace ICanBoogie\Render; |
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use ICanBoogie\Accessor\AccessorTrait; |
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/** |
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* An engine collection. |
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* |
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* @property-read array $extensions The extensions supported by the engines. |
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*/ |
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class EngineCollection implements \ArrayAccess, \IteratorAggregate |
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{ |
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use AccessorTrait; |
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/** |
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* @var array |
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*/ |
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private $engines; |
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/** |
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* @return array |
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*/ |
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protected function get_extensions() |
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{ |
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return array_keys($this->engines); |
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} |
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/** |
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* @var Engine[] |
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*/ |
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private $instances; |
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/** |
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* @param array $engines |
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*/ |
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public function __construct(array $engines = []) |
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{ |
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foreach ($engines as $extension => $engine) |
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{ |
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$this[$extension] = $engine; |
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} |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function offsetExists($extension) |
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{ |
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return isset($this->engines[$extension]); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function offsetGet($extension) |
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{ |
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if (!$this->offsetExists($extension)) |
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{ |
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throw new EngineNotDefined([ $extension, $this ]); |
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} |
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if (empty($this->instances[$extension])) |
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{ |
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$instance = $this->engines[$extension]; |
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if (is_string($instance)) |
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{ |
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$instance = new $instance; |
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} |
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$this->instances[$extension] = $instance; |
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} |
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return $this->instances[$extension]; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function offsetSet($extension, $engine) |
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{ |
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$this->engines[$extension] = $engine; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function offsetUnset($extension) |
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{ |
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unset($this->engines[$extension]); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getIterator() |
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{ |
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return new \ArrayIterator($this->engines); |
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} |
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/** |
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* Resolves the engine to use from the specified pathname. |
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* |
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* @param $pathname |
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* |
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* @return Engine|bool An engine or `false` if none matches the extension. |
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*/ |
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public function resolve_engine($pathname) |
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{ |
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$extension = pathinfo($pathname, PATHINFO_EXTENSION); |
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if (!$extension) |
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{ |
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return false; |
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} |
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$extension = "." . $extension; |
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if (!isset($this[$extension])) |
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{ |
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return false; |
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} |
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return $this[$extension]; |
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} |
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/** |
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* Renders a template with the specified variables. |
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* |
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* @param string $template_pathname The pathname of the template. |
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* @param mixed $thisArg The subject of the rendering. |
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* @param array $variables |
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* @param array $options |
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* |
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* @return string |
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* |
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* @throws EngineNotAvailable when there is no engine available to render the template. |
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*/ |
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public function render($template_pathname, $thisArg, $variables, array $options = []) |
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{ |
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$engine = $this->resolve_engine($template_pathname); |
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if (!$engine) |
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{ |
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throw new EngineNotAvailable("There is no engine available to render template $template_pathname."); |
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} |
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return $engine->render($template_pathname, $thisArg, $variables, $options); |
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} |
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} |
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ICanBoogie /
Render
