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<?php |
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/** |
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* This file is part of the Phalcon Framework. |
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* |
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* (c) Phalcon Team <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE.txt |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace Phalcon\Html\Link\Serializer; |
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use function implode; |
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use function is_array; |
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use function is_bool; |
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/** |
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* Class Phalcon\Http\Link\Serializer\Header |
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*/ |
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class Header implements SerializerInterface |
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{ |
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/** |
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* Serializes all the passed links to a HTTP link header |
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* |
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* @param array $links |
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* |
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* @return string|null |
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*/ |
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public function serialize(array $links): ?string |
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{ |
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$elements = []; |
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$result = null; |
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foreach ($links as $link) { |
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/** |
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* Leave templated links alone |
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*/ |
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if ($link->isTemplated()) { |
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continue; |
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} |
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/** |
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* Split the parts of the attributes so that we can parse them |
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*/ |
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$attributes = $link->getAttributes(); |
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$rels = $link->getRels(); |
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$parts = [ |
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"", |
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"rel=\"" . implode(" ", $rels) . "\"", |
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]; |
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foreach ($attributes as $key => $value) { |
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if (is_array($value)) { |
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$parts = $this->processArray($parts, $value, $key); |
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continue; |
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} |
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if (!is_bool($value)) { |
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$parts[] = $key . "=\"" . $value . "\""; |
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continue; |
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} |
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if (true === $value) { |
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$parts[] = $key; |
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continue; |
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} |
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} |
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$elements[] = "<" |
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. $link->getHref() |
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. ">" |
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. implode("; ", $parts); |
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} |
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if (count($elements) > 0) { |
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$result = implode(",", $elements); |
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} |
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return $result; |
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} |
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/** |
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* Traverses a value array and add the parts |
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* |
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* @param array $parts |
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* @param array $value |
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* @param string $key |
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* |
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* @return array |
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*/ |
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private function processArray(array $parts, array $value, string $key): array |
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{ |
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foreach ($value as $subValue) { |
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$parts[] = $key . "=\"" . $subValue . "\""; |
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} |
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return $parts; |
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} |
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} |
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niden /
cardoe
