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<?php |
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namespace SeoHelper\Renderer; |
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use Closure; |
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abstract class AbstractRenderer implements RendererInterface |
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{ |
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protected $types = []; |
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protected $preprocessors = []; |
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final public function init() |
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{ |
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$this->initPreprocessors(); |
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} |
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/** |
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* @return array |
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*/ |
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public function getTypes() |
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{ |
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return array_keys($this->types); |
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} |
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/** |
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* @param string $type |
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* @param string $key |
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* @param mixed $value |
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* @return string|array|boolean rendered item(s) or false on failure |
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*/ |
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public function render($type, $key, $value) |
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{ |
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$pattern = $this->getPattern($type); |
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if (!$pattern) { |
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return false; |
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} |
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$finalValue = $this->preprocessValue($key, $value); |
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if (!is_array($finalValue)) { |
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return str_replace(['{$key}', '{$value}'], [$key, $finalValue], $pattern); |
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} |
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$items = []; |
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foreach ($finalValue as $val) { |
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$items[] = str_replace(['{$key}', '{$value}'], [$key, $val], $pattern); |
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} |
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return $items; |
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} |
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/** |
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* @param string $type |
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* @param Closure $closure function with one argument: $value |
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* @return AbstractRenderer |
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*/ |
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public function setPreprocessor($type, Closure $closure) |
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{ |
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$this->preprocessors[$type] = $closure; |
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return $this; |
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} |
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protected function getPattern($type) |
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{ |
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return isset($this->types[$type]) ? $this->types[$type] : null; |
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} |
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protected function preprocessValue($key, $value) |
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{ |
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$preprocessor = isset($this->preprocessors[$key]) ? $this->preprocessors[$key] : null; |
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if (!$preprocessor) { |
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return $value; |
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} |
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return $preprocessor($value); |
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} |
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abstract protected function initPreprocessors(); |
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} |
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lulco /
seo-helper
