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<?php |
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/** |
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* Novactive Collection. |
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* |
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* @author Luke Visinoni <[email protected], [email protected]> |
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* @author Sébastien Morel <[email protected], [email protected]> |
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* @copyright 2017 Novactive |
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* @license MIT |
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*/ |
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namespace Novactive\Collection\Selector; |
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use Novactive\Collection\Collection; |
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use Novactive\Collection\Factory; |
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/** |
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* Class Range. |
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*/ |
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class Range |
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{ |
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/** |
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* Explode the selector to get ranges. |
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* |
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* @param $selector |
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* |
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* @return Collection |
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*/ |
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protected function getRanges($selector) |
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{ |
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return Factory::create(explode(';', $selector))->map( |
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function ($range) { |
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if ($separator = $this->dotDotSeparator($range) != false) { |
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return Factory::create([substr($range, 0, $separator), substr($range, $separator + 2)]); |
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} |
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if (($separator = $this->columnSeparator($range) != false) || |
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($separator = $this->dashSeparator($range) != false) |
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) { |
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return Factory::create([substr($range, 0, $separator), substr($range, $separator + 1)]); |
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} |
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if ($separator = $this->commaSeparator($range) != false) { |
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return Factory::create( |
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[ |
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substr($range, 0, $separator), |
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intval(substr($range, 0, $separator)) + intval(substr($range, $separator + 1) - 1), |
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] |
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); |
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} |
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// just a number here |
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return Factory::create([$range, $range]); |
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} |
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); |
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} |
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/** |
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* @param Collection $parameters |
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* |
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* @return bool |
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*/ |
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public function supports(Collection $parameters) |
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{ |
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return $parameters->assert( |
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function ($param) { |
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if (is_array($param) && count($param) == 2) { |
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return true; |
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} |
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return preg_match('/^([0-9])*([,-:;\\.]*)([0-9])*$/uis', $param) == 1; |
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}, |
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true |
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); |
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} |
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/** |
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* @param Collection $parameters |
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* @param Collection $collection |
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*/ |
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public function convert(Collection $parameters, Collection $collection) |
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{ |
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$newCollection = Factory::create(); |
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$selector = $parameters->map( |
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function ($param) { |
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if ((is_array($param) && count($param) == 2)) { |
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return implode(':', $param); |
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} |
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return $param; |
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} |
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)->implode(';'); |
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return $this->getRanges($selector)->reduce( |
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function (Collection $accumulator, Collection $range) use ($collection) { |
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$from = $range->first(); |
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$to = $range->last(); |
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if ($to >= $from) { |
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return $accumulator->append($collection->slice($from, ($to - $from) + 1)); |
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} |
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return $accumulator->append($collection->slice($to, ($from - $to) + 1)->inverse()); |
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}, |
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$newCollection |
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); |
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} |
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/** |
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* @param $string |
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* |
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* @return bool|int |
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*/ |
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protected function dotDotSeparator($string) |
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{ |
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return strpos($string, '..'); |
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} |
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/** |
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* @param $string |
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* |
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* @return bool|int |
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*/ |
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protected function columnSeparator($string) |
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{ |
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return strpos($string, ':'); |
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} |
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/** |
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* @param $string |
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* |
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* @return bool|int |
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*/ |
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protected function dashSeparator($string) |
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{ |
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return strpos($string, '-'); |
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} |
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/** |
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* @param $string |
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* |
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* @return bool|int |
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*/ |
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protected function commaSeparator($string) |
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{ |
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return strpos($string, ','); |
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} |
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} |
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Novactive /
NovaCollection
