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<?php |
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/* |
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* This file is part of the feed-io package. |
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* |
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* (c) Alexandre Debril <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace FeedIo\Formatter; |
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use FeedIo\Feed\NodeInterface; |
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use FeedIo\FeedInterface; |
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use FeedIo\Rule\OptionalField; |
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use FeedIo\RuleSet; |
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use FeedIo\Standard\XmlAbstract; |
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use FeedIo\FormatterInterface; |
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/** |
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* Turns a FeedInterface instance into a XML document. |
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* |
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* Depends on : |
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* - FeedIo\StandardAbstract |
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* |
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*/ |
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class XmlFormatter implements FormatterInterface |
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{ |
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/** |
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* @var XmlAbstract |
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*/ |
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protected $standard; |
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/** |
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* @param XmlAbstract $standard |
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*/ |
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public function __construct(XmlAbstract $standard) |
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{ |
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$this->standard = $standard; |
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} |
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/** |
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* @param \DOMDocument $document |
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* @param FeedInterface $feed |
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* @return $this |
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*/ |
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public function setHeaders(\DOMDocument $document, FeedInterface $feed) |
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{ |
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$rules = $this->standard->getFeedRuleSet(); |
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$elements = $this->buildElements($rules, $document, $feed); |
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foreach ($elements as $element) { |
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$this->standard->getMainElement($document)->appendChild($element); |
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} |
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return $this; |
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} |
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/** |
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* @param \DOMDocument $document |
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* @param NodeInterface $node |
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* @return $this |
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*/ |
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public function addItem(\DOMDocument $document, NodeInterface $node) |
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{ |
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$domItem = $document->createElement($this->standard->getItemNodeName()); |
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$rules = $this->standard->getItemRuleSet(); |
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$elements = $this->buildElements($rules, $document, $node); |
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foreach ($elements as $element) { |
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$domItem->appendChild($element); |
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} |
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$this->standard->getMainElement($document)->appendChild($domItem); |
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return $this; |
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} |
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/** |
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* @param RuleSet $ruleSet |
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* @param \DOMDocument $document |
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* @param NodeInterface $node |
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* @return array |
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*/ |
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public function buildElements(RuleSet $ruleSet, \DOMDocument $document, NodeInterface $node) |
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{ |
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$rules = $this->getAllRules($ruleSet, $node); |
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$elements = array(); |
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foreach ($rules as $rule) { |
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$element = $rule->createElement($document, $node); |
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if ($element instanceof \Traversable) { |
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$elements = array_merge($elements, iterator_to_array($element)); |
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} else { |
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$elements[] = $element; |
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} |
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} |
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return array_filter($elements); |
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} |
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/** |
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* @param RuleSet $ruleSet |
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* @param NodeInterface $node |
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* @return array|\ArrayIterator |
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*/ |
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public function getAllRules(RuleSet $ruleSet, NodeInterface $node) |
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{ |
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$rules = $ruleSet->getRules(); |
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$optionalFields = $node->listElements(); |
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foreach ($optionalFields as $optionalField) { |
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$rules[] = new OptionalField($optionalField); |
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} |
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return $rules; |
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} |
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/** |
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* @return \DOMDocument |
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*/ |
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public function getEmptyDocument() |
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{ |
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return new \DOMDocument('1.0', 'utf-8'); |
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} |
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/** |
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* @return \DOMDocument |
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*/ |
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public function getDocument() |
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{ |
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$document = $this->getEmptyDocument(); |
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return $this->standard->format($document); |
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} |
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/** |
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* @param FeedInterface $feed |
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* @return string |
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*/ |
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public function toString(FeedInterface $feed) |
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{ |
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$document = $this->toDom($feed); |
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return $document->saveXML(); |
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} |
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/** |
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* @param FeedInterface $feed |
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* @return \DomDocument |
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*/ |
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public function toDom(FeedInterface $feed) |
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{ |
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$document = $this->getDocument(); |
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$this->setHeaders($document, $feed); |
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$this->setItems($document, $feed); |
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return $document; |
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} |
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/** |
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* @param \DOMDocument $document |
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* @param FeedInterface $feed |
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* @return $this |
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*/ |
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public function setItems(\DOMDocument $document, FeedInterface $feed) |
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{ |
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foreach ($feed as $item) { |
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$this->addItem($document, $item); |
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} |
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return $this; |
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} |
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} |
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alexdebril /
feed-io
