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<?php |
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/** |
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* @package s9e\TextFormatter |
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* @copyright Copyright (c) 2010-2019 The s9e Authors |
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* @license http://www.opensource.org/licenses/mit-license.php The MIT License |
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*/ |
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namespace s9e\TextFormatter\Configurator\Collections; |
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use InvalidArgumentException; |
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use s9e\TextFormatter\Configurator\Helpers\FilterHelper; |
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use s9e\TextFormatter\Configurator\Items\Filter; |
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use s9e\TextFormatter\Configurator\Items\ProgrammableCallback; |
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abstract class FilterChain extends NormalizedList |
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{ |
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/** |
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* Get the name of the filter class |
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* |
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* @return string |
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*/ |
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abstract protected function getFilterClassName(); |
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/** |
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* Test whether this filter chain contains given callback |
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* |
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* @param callable $callback |
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* @return bool |
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*/ |
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public function containsCallback(callable $callback) |
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{ |
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// Normalize the callback |
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$pc = new ProgrammableCallback($callback); |
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$callback = $pc->getCallback(); |
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foreach ($this->items as $filter) |
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{ |
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if ($callback === $filter->getCallback()) |
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{ |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* Normalize a value into an TagFilter instance |
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* |
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* @param mixed $value Either a valid callback or an instance of TagFilter |
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* @return Filter Normalized filter |
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*/ |
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public function normalizeValue($value) |
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{ |
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if (is_string($value) && strpos($value, '(') !== false) |
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{ |
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return $this->createFilter($value); |
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} |
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$className = $this->getFilterClassName(); |
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if ($value instanceof $className) |
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{ |
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return $value; |
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} |
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if (!is_callable($value)) |
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{ |
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throw new InvalidArgumentException('Filter ' . var_export($value, true) . ' is neither callable nor an instance of ' . $className); |
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} |
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return new $className($value); |
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} |
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/** |
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* Create and return a filter |
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* |
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* @param string $filterString |
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* @return Filter |
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*/ |
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protected function createFilter($filterString) |
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{ |
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$config = FilterHelper::parse($filterString); |
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$filter = $this->normalizeValue($config['filter']); |
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if (isset($config['params'])) |
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{ |
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$filter->resetParameters(); |
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foreach ($config['params'] as [$type, $value]) |
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{ |
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$methodName = 'addParameterBy' . $type; |
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$filter->$methodName($value); |
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} |
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} |
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return $filter; |
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} |
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} |
s9e /
TextFormatter
