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<?php declare(strict_types=1); |
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namespace Stratadox\RestResource; |
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use SimpleXMLElement; |
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use Throwable; |
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use function array_walk_recursive; |
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use function current; |
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use function sprintf; |
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abstract class XmlFormatter implements ResourceFormatter |
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{ |
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use LinkRetrieval; |
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/** @var string */ |
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private $baseUri; |
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/** @var Singularizer */ |
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protected $singularizer; |
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private function __construct(string $baseUri, Singularizer $singularizer = null) |
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{ |
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$this->baseUri = $baseUri; |
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$this->singularizer = $singularizer ?: BoogieSingularizer::default(); |
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} |
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public static function fromBaseUri(string $baseUri): ResourceFormatter |
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{ |
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return new static($baseUri, BoogieSingularizer::default()); |
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} |
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public static function in( |
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string $locale, |
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string $baseUri |
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): ResourceFormatter { |
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return new static($baseUri, BoogieSingularizer::in($locale)); |
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} |
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public static function withSingularizer( |
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string $baseUri, |
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Singularizer $singularizer |
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): ResourceFormatter { |
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return new static($baseUri, $singularizer); |
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} |
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public function from(RestResource $resource): string |
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{ |
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$xml = new SimpleXMLElement(sprintf( |
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'<?xml version="1.0"?><%s />', |
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$resource->name() |
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)); |
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try { |
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$this->toSimpleXML( |
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current($this->prepare($resource)), |
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$xml |
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); |
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return (string) $xml->asXML(); |
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} catch (Throwable $exception) { |
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throw CannotFormatXml::because($resource, $exception); |
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} |
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} |
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// @todo inject serializer instead |
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abstract protected function toSimpleXML( |
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array $input, |
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SimpleXMLElement $parent, |
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bool $alreadySingularized = false |
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): void; |
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private function prepare(RestResource $resource): array |
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{ |
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return [$resource->name() => |
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$this->flatten($resource->body()) + |
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$this->linksOf($resource, $this->baseUri) |
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]; |
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} |
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private function flatten(array $body): array |
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{ |
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array_walk_recursive($body, function (&$data) { |
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if ($data instanceof RestResource) { |
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$data = $this->prepare($data); |
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} |
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}); |
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return $body; |
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} |
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} |
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Stratadox /
RestResource
