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<?php |
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namespace Sulao\HtmlQuery; |
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use DOMDocument, DOMNode, DOMNodeList; |
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/** |
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* Trait Selector |
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* |
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* @package Sulao\HtmlQuery |
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*/ |
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trait Resolver |
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{ |
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/** |
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* @var DOMDocument |
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*/ |
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protected $doc; |
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/** |
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* @var DOMNode[] |
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*/ |
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protected $nodes; |
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/** |
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* Selector constructor. |
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* |
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* @param DOMDocument $doc |
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* @param DOMNode|DOMNode[]|DOMNodeList|static $nodes |
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* |
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* @return static |
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*/ |
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abstract public function __construct(DOMDocument $doc, $nodes); |
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/** |
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* Get the descendants of each matched node, filtered by a selector. |
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* |
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* @param string|DOMNode|DOMNode[]|DOMNodeList|static $selector |
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* |
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* @return static |
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*/ |
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abstract public function find($selector); |
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/** |
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* Resolve DOMNode(s) to a static instance. |
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* |
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* @param DOMNode|DOMNode[]|DOMNodeList|static $nodes |
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* |
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* @return static |
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*/ |
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protected function resolve($nodes) |
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{ |
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if ($nodes instanceof static) { |
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return $nodes; |
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} |
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return new static($this->doc, $nodes); |
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} |
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/** |
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* If the parameter is a css selector, get the descendants |
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* of dom document filtered by the css selector. |
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* If the parameter is selection, resolve that selection to static object. |
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* |
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* @param string|DOMNode|DOMNode[]|DOMNodeList|static $selector |
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* |
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* @return static |
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*/ |
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protected function targetResolve($selector) |
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{ |
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if (is_string($selector)) { |
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return $this->resolve($this->doc)->find($selector); |
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} |
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return $this->resolve($selector); |
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} |
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/** |
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* If the parameter is string, consider it as raw html, |
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* then create document fragment for it. |
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* If the parameter is selection, resolve that selection to static instance. |
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* |
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* @param string|DOMNode|DOMNode[]|DOMNodeList|static $content |
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* |
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* @return static |
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*/ |
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protected function contentResolve($content) |
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{ |
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if (is_string($content)) { |
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return $this->htmlResolve($content); |
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} |
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return $this->resolve($content); |
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} |
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/** |
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* Resolve the html content to static instance. |
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* |
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* @param string $html |
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* |
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* @return static |
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*/ |
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protected function htmlResolve(string $html) |
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{ |
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$frag = $this->doc->createDocumentFragment(); |
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$frag->appendXML($html); |
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return $this->resolve($frag); |
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} |
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/** |
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* Resolve the nodes under the relation to static instance. |
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* up to but not including the node matched by the $until selector. |
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* |
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* @param string $relation |
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* @param string|DOMNode|DOMNode[]|DOMNodeList|static $until |
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* |
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* @return static |
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*/ |
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protected function relationResolve(string $relation, ?string $until = null) |
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{ |
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$untilNodes = !is_null($until) |
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? $this->targetResolve($until)->nodes |
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: []; |
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$nodes = []; |
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foreach ($this->nodes as $node) { |
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while ($node = Helper::getRelationNode($node, $relation)) { |
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if (in_array($node, $untilNodes, true)) { |
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break; |
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} |
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if (!in_array($node, $nodes, true)) { |
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$nodes[] = $node; |
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} |
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} |
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} |
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return $this->resolve($nodes); |
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} |
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/** |
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* Resolve the xpath to static instance. |
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* |
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* @param string $xpath |
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* |
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* @return static |
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*/ |
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protected function xpathResolve(string $xpath) |
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{ |
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$nodes = []; |
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foreach ($this->nodes as $node) { |
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$nodes = array_merge($nodes, $this->xpathQuery($xpath, $node)); |
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} |
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$nodes = Helper::strictArrayUnique($nodes); |
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return $this->resolve($nodes); |
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} |
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/** |
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* Query xpath to an array of DOMNode |
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* |
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* @param string $xpath |
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* @param DOMNode|null $node |
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* |
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* @return DOMNode[] |
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*/ |
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protected function xpathQuery( |
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string $xpath, |
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?DOMNode $node = null |
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): array { |
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return Helper::xpathQuery($xpath, $this->doc, $node); |
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} |
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} |
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xinningsu /
html-query
