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<?php |
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/** |
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* Copyright (c) 2017–2018 Ryan Parman <http://ryanparman.com>. |
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* Copyright (c) 2017–2018 Contributors. |
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* |
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* http://opensource.org/licenses/Apache2.0 |
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*/ |
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declare(strict_types=1); |
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namespace SimplePie\Middleware\Xml; |
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use DOMXPath; |
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use ReflectionClass; |
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use SimplePie\Configuration as C; |
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use SimplePie\Mixin as Tr; |
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use SimplePie\Type as T; |
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use stdClass; |
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/** |
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* Support for the Atom 1.0 grammar. |
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* |
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* @see https://tools.ietf.org/html/rfc4287 |
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* @see https://www.w3.org/wiki/Atom |
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*/ |
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class Atom extends AbstractXmlMiddleware implements XmlInterface, C\SetLoggerInterface |
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{ |
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use Tr\LoggerTrait; |
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/** |
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* {@inheritdoc} |
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*/ |
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public function __invoke(stdClass $feedRoot, string $namespaceAlias, DOMXPath $xpath): void |
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{ |
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// Top-level feed |
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$path = ['feed']; |
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$this->getNodeAttributes($feedRoot, $namespaceAlias, $xpath, $path); |
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$feedFallback = [ |
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'base' => $feedRoot->base[$namespaceAlias]->getNode(), |
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'lang' => $feedRoot->lang[$namespaceAlias]->getNode(), |
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]; |
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$this->getSingleScalarTypes($feedRoot, $namespaceAlias, $xpath, $path, $feedFallback); |
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$this->getSingleComplexTypes($feedRoot, $namespaceAlias, $xpath, $path); |
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$this->getMultipleComplexTypes($feedRoot, $namespaceAlias, $xpath, $path); |
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// <entry> element |
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$path = ['feed', 'entry']; |
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foreach ($feedRoot->entry[$namespaceAlias] as $i => &$entry) { |
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$cpath = $path; |
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$cpath[] = $i; |
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$feedFallback = [ |
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'base' => $feedRoot->base[$namespaceAlias]->getNode(), |
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'lang' => $feedRoot->lang[$namespaceAlias]->getNode(), |
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]; |
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$this->getNodeAttributes($entry, $namespaceAlias, $xpath, $cpath, $feedFallback); |
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$entryFallback = [ |
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'base' => $entry->base[$namespaceAlias]->getNode(), |
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'lang' => $entry->lang[$namespaceAlias]->getNode(), |
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]; |
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$this->getSingleScalarTypes($entry, $namespaceAlias, $xpath, $cpath, $entryFallback); |
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$this->getSingleComplexTypes($entry, $namespaceAlias, $xpath, $cpath); |
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$this->getMultipleComplexTypes($entry, $namespaceAlias, $xpath, $cpath); |
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} |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* Supports valid and invalid variations. |
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* |
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* * http://www.w3.org/2005/Atom |
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* * http://www.w3.org/2005/Atom/ |
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* * https://www.w3.org/2005/Atom |
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* * https://www.w3.org/2005/Atom/ |
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*/ |
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public function getSupportedNamespaces(): array |
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{ |
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return [ |
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'http://www.w3.org/2005/Atom' => 'atom10', |
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'/https?:\/\/www\.w3\.org\/2005\/Atom\/?/' => 'atom10', |
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]; |
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} |
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/** |
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* Fetches attributes with a single, scalar value, on elements. |
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* |
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* @param stdClass $feedRoot The root of the feed. This will be written-to when the parsing middleware runs. |
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* @param string $namespaceAlias The preferred namespace alias for a given XML namespace URI. Should be the result |
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* of a call to `SimplePie\Util\Ns`. |
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* @param DOMXPath $xpath The `DOMXPath` object with this middleware's namespace alias applied. |
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* @param array $path The path of the XML traversal. Should begin with `<feed>` or `<channel>`, |
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* then `<entry>` or `<item>`. |
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* @param array $fallback An array of attributes for default XML attributes. The default value is an |
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* empty array. |
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* |
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* @phpcs:disable Generic.Functions.OpeningFunctionBraceBsdAllman.BraceOnSameLine |
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*/ |
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protected function getNodeAttributes( |
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object $feedRoot, |
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string $namespaceAlias, |
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DOMXPath $xpath, |
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array $path, |
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array $fallback = [] |
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): void { |
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// @phpcs:enable |
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$attrs = [ |
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'base' => '@xml:base', |
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'lang' => '@xml:lang', |
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]; |
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// Used for traversing up the tree for inheritance |
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$pathMinusLastBit = $path; |
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\array_pop($pathMinusLastBit); |
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foreach ($attrs as $nodeName => $searchName) { |
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$query = $this->generateQuery($namespaceAlias, \array_merge($path, [$searchName])); |
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$xq = $xpath->query($query); |
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$this->addArrayProperty($feedRoot, $nodeName); |
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$this->getLogger()->debug(\sprintf('%s is running an XPath query:', __CLASS__), [$query]); |
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$feedRoot->{$nodeName}[$namespaceAlias] = (false !== $xq && $xq->length > 0) |
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? new T\Node($xq->item(0)) |
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: new T\Node($this->get($fallback, $nodeName)); |
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} |
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} |
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/** |
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* Fetches elements with a single, scalar value. |
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* |
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* @param stdClass $feedRoot The root of the feed. This will be written-to when the parsing middleware runs. |
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* @param string $namespaceAlias The preferred namespace alias for a given XML namespace URI. Should be the result |
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* of a call to `SimplePie\Util\Ns`. |
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* @param DOMXPath $xpath The `DOMXPath` object with this middleware's namespace alias applied. |
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* @param array $path The path of the XML traversal. Should begin with `<feed>` or `<channel>`, |
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* then `<entry>` or `<item>`. |
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* @param array $fallback An array of attributes for default XML attributes. The default value is an |
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* empty array. |
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* |
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* @phpcs:disable Generic.Functions.OpeningFunctionBraceBsdAllman.BraceOnSameLine |
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*/ |
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protected function getSingleScalarTypes( |
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object $feedRoot, |
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string $namespaceAlias, |
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DOMXPath $xpath, |
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array $path, |
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array $fallback = [] |
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): void { |
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// @phpcs:enable |
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$cpath = $path; |
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$nodes = []; |
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if (\is_int(\end($cpath))) { |
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\array_pop($cpath); |
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} |
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if ('feed' === \end($cpath)) { |
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$nodes = [ |
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'icon', |
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'id', |
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'logo', |
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'published', |
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'rights', |
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'subtitle', |
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'summary', |
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'title', |
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'updated', |
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]; |
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} elseif ('entry' === \end($cpath)) { |
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$nodes = [ |
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'content', |
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'id', |
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'published', |
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'rights', |
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'summary', |
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'title', |
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'updated', |
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]; |
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} |
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foreach ($nodes as $nodeName) { |
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$query = $this->generateQuery($namespaceAlias, \array_merge($path, [$nodeName])); |
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$xq = $xpath->query($query); |
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$this->addArrayProperty($feedRoot, $nodeName); |
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$this->getLogger()->debug(\sprintf('%s is running an XPath query:', __CLASS__), [$query]); |
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$feedRoot->{$nodeName}[$namespaceAlias] = (false !== $xq && $xq->length > 0) |
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? new T\Node($xq->item(0), $fallback) |
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: new T\Node(); |
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} |
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} |
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/** |
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* Fetches elements with a single, complex value. |
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* |
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* @param stdClass $feedRoot The root of the feed. This will be written-to when the parsing middleware runs. |
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* @param string $namespaceAlias The preferred namespace alias for a given XML namespace URI. Should be the result |
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* of a call to `SimplePie\Util\Ns`. |
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* @param DOMXPath $xpath The `DOMXPath` object with this middleware's namespace alias applied. |
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* @param array $path The path of the XML traversal. Should begin with `<feed>` or `<channel>`, |
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* then `<entry>` or `<item>`. |
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* |
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* @phpcs:disable Generic.Functions.OpeningFunctionBraceBsdAllman.BraceOnSameLine |
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*/ |
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protected function getSingleComplexTypes( |
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object $feedRoot, |
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string $namespaceAlias, |
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DOMXPath $xpath, |
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array $path |
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): void { |
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// @phpcs:enable |
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$cpath = $path; |
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$nodes = []; |
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if (\is_int(\end($cpath))) { |
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\array_pop($cpath); |
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} |
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if ('feed' === \end($cpath)) { |
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$nodes = [ |
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'generator' => T\Generator::class, |
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]; |
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} |
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foreach ($nodes as $name => $class) { |
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$query = $this->generateQuery($namespaceAlias, \array_merge($path, [$name])); |
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$xq = $xpath->query($query); |
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$this->addArrayProperty($feedRoot, $name); |
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$this->getLogger()->debug(\sprintf('%s is running an XPath query:', __CLASS__), [$query]); |
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$feedRoot->{$name}[$namespaceAlias] = (false !== $xq && $xq->length > 0) |
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? new $class($xq->item(0), $this->getLogger()) |
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: null; |
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} |
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} |
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/** |
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* Fetches elements with a multiple, complex values. |
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* |
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* @param stdClass $feedRoot The root of the feed. This will be written-to when the parsing middleware runs. |
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* @param string $namespaceAlias The preferred namespace alias for a given XML namespace URI. Should be the result |
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* of a call to `SimplePie\Util\Ns`. |
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* @param DOMXPath $xpath The `DOMXPath` object with this middleware's namespace alias applied. |
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* @param array $path The path of the XML traversal. Should begin with `<feed>` or `<channel>`, |
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* then `<entry>` or `<item>`. |
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* |
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* @phpcs:disable Generic.Functions.OpeningFunctionBraceBsdAllman.BraceOnSameLine |
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*/ |
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protected function getMultipleComplexTypes( |
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object $feedRoot, |
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string $namespaceAlias, |
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DOMXPath $xpath, |
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array $path |
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): void { |
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// @phpcs:enable |
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$cpath = $path; |
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$nodes = []; |
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if (\is_int(\end($cpath))) { |
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\array_pop($cpath); |
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} |
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if ('feed' === \end($cpath)) { |
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$nodes = [ |
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'author' => T\Person::class, |
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'category' => T\Category::class, |
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'contributor' => T\Person::class, |
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'entry' => T\Entry::class, |
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'link' => T\Link::class, |
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]; |
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} elseif ('entry' === \end($cpath)) { |
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$nodes = [ |
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'author' => T\Person::class, |
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'category' => T\Category::class, |
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'contributor' => T\Person::class, |
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'link' => T\Link::class, |
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]; |
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} |
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foreach ($nodes as $name => $class) { |
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$query = $this->generateQuery($namespaceAlias, \array_merge($path, [$name])); |
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$xq = $xpath->query($query); |
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$this->addArrayProperty($feedRoot, $name); |
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$this->getLogger()->debug(\sprintf('%s is running an XPath query:', __CLASS__), [$query]); |
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$feedRoot->{$name}[$namespaceAlias] = []; |
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foreach ($xq as $result) { |
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// What kind of class is this? |
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$rclass = (new ReflectionClass($class)) |
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->newInstanceWithoutConstructor(); |
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if ($rclass instanceof T\BranchInterface) { |
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$feedRoot->{$name}[$namespaceAlias][] = new $class( |
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$namespaceAlias, |
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$result, |
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$this->getLogger() |
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); |
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} else { |
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$feedRoot->{$name}[$namespaceAlias][] = new $class( |
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$result, |
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$this->getLogger() |
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); |
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} |
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} |
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} |
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} |
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} |
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