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<?php |
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namespace Goetas\TwitalBundle\EventSubscriber; |
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use Symfony\Component\EventDispatcher\EventSubscriberInterface; |
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use Goetas\Twital\EventDispatcher\TemplateEvent; |
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use Goetas\Twital\Twital; |
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/** |
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* |
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* @author Asmir Mustafic <[email protected]> |
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* |
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*/ |
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class WhiteSpaceRemovalSubscriber implements EventSubscriberInterface |
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{ |
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protected $allowedTags = array(); |
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protected $allowedNamespaces = array(); |
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public function __construct(array $allowedTags = array(), array $allowedNamespaces = array()) |
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{ |
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$this->allowedTags = $allowedTags; |
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$this->allowedNamespaces = $allowedNamespaces; |
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} |
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public static function getSubscribedEvents() |
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{ |
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return array( |
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'compiler.post_load' => array('removeWhitespace', -10) |
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); |
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} |
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private function performXpathQuery(\DOMXPath $xp, $query, \DOMNode $ref) |
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{ |
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if (defined('HHVM_VERSION')) { |
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return $xp->query($query, $ref); |
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} else { |
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return $xp->query($query, $ref, false); |
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} |
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} |
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public function removeWhitespace(TemplateEvent $event) |
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{ |
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$doc = $event->getTemplate()->getDocument(); |
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$xp = new \DOMXPath($doc); |
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$xp->registerNamespace("t", Twital::NS); |
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foreach ($this->performXpathQuery($xp, "//text()[ancestor::*[@t:trans or @t:trans-n]]", $doc) as $text) { |
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if ($this->isAllowedNode($text->parentNode)) { |
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$text->data = preg_replace('/\s+/', ' ', $text->data); |
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if ($text->parentNode->childNodes->length === 1) { |
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$trimmed = trim($text->data); |
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if (!strlen($trimmed) && strlen($text->data)) { |
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$trimmed = " "; |
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} |
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$text->data = $trimmed; |
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} elseif ($text->parentNode->hasAttributeNs(Twital::NS, 'trans') || $text->parentNode->hasAttributeNs(Twital::NS, 'trans-n')) { |
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if ($text->parentNode->firstChild === $text) { |
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$text->data = ltrim($text->data); |
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} elseif ($text->parentNode->lastChild === $text) { |
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$text->data = rtrim($text->data); |
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} |
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} |
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} |
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} |
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} |
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private function isAllowedNode(\DOMElement $element) |
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{ |
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if ($this->allowedTags && !in_array($element->localName, $this->allowedTags)) { |
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return false; |
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} |
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if ($this->allowedNamespaces && !in_array($element->namespaceURI, $this->allowedNamespaces)) { |
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return false; |
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} |
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return true; |
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} |
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} |
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goetas /
twital-bundle
Loading history...
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.