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<?php |
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/* @description Transformation Style Sheets - Revolutionising PHP templating * |
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* @author Tom Butler [email protected] * |
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* @copyright 2017 Tom Butler <[email protected]> | https://r.je/ * |
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License * |
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* @version 1.2 */ |
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namespace Transphporm\Property; |
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class Content implements \Transphporm\Property { |
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private $contentPseudo = []; |
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private $formatter; |
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public function __construct(\Transphporm\Hook\Formatter $formatter) { |
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$this->formatter = $formatter; |
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} |
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public function run(array $values, \DomElement $element, array $rules, \Transphporm\Hook\PseudoMatcher $pseudoMatcher, array $properties = []) { |
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if (!$this->shouldRun($element)) return false; |
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$values = $this->formatter->format($values, $rules); |
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if (!$this->processPseudo($values, $element, $pseudoMatcher)) { |
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//Remove the current contents |
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$this->removeAllChildren($element); |
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//Now make a text node |
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if ($this->getContentMode($rules) === 'replace') $this->replaceContent($element, $values); |
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else $this->appendContent($element, $values); |
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} |
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} |
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private function shouldRun($element) { |
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do { |
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if ($element->getAttribute('transphporm') == 'includedtemplate') return false; |
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} |
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while (($element = $element->parentNode) instanceof \DomElement); |
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return true; |
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} |
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private function getContentMode($rules) { |
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return (isset($rules['content-mode'])) ? $rules['content-mode']->read() : 'append'; |
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} |
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public function addContentPseudo($name, ContentPseudo $contentPseudo) { |
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$this->contentPseudo[$name] = $contentPseudo; |
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} |
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private function processPseudo($value, $element, $pseudoMatcher) { |
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foreach ($this->contentPseudo as $pseudoName => $pseudoFunction) { |
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if ($pseudoMatcher->hasFunction($pseudoName)) { |
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$pseudoFunction->run($value, $pseudoMatcher->getFuncArgs($pseudoName, $element)[0], $element, $pseudoMatcher); |
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return true; |
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} |
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} |
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return false; |
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} |
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public function getNode($node, $document) { |
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foreach ($node as $n) { |
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if (is_array($n)) { |
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foreach ($this->getNode($n, $document) as $new) yield $new; |
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} |
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else { |
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yield $this->convertNode($n, $document); |
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} |
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} |
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} |
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private function convertNode($node, $document) { |
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if ($node instanceof \DomElement || $node instanceof \DOMComment) { |
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$new = $document->importNode($node, true); |
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//Removing this might cause problems with caching... |
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//$new->setAttribute('transphporm', 'added'); |
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} |
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else { |
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if ($node instanceof \DomText) $node = $node->nodeValue; |
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$new = $document->createElement('text'); |
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$new->appendChild($document->createTextNode($node)); |
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$new->setAttribute('transphporm', 'text'); |
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} |
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return $new; |
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} |
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private function replaceContent($element, $content) { |
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//If this rule was cached, the elements that were added last time need to be removed prior to running the rule again. |
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if ($element->getAttribute('transphporm')) { |
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$this->replaceCachedContent($element); |
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} |
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foreach ($this->getNode($content, $element->ownerDocument) as $node) { |
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if (!$node->getAttribute('transphporm')) $node->setAttribute('transphporm', 'added'); |
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$element->parentNode->insertBefore($node, $element); |
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} |
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//Remove the original element from the final output |
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$element->setAttribute('transphporm', 'remove'); |
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} |
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private function replaceCachedContent($element) { |
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$el = $element; |
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while ($el = $el->previousSibling) { |
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if ($el->nodeType == 1 && $el->getAttribute('transphporm') != 'remove') { |
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$el->parentNode->removeChild($el); |
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} |
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} |
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$this->fixPreserveWhitespacRemoveChild($element); |
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} |
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// $doc->preserveWhiteSpace = false should fix this but it doesn't |
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// Remove extra whitespace created by removeChild to avoid the cache growing 1 byte every time it's reloaded |
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// This may need to be moved in future, anywhere elements are being removed and files are cached may need to apply this fix |
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private function fixPreserveWhitespacRemoveChild($element) { |
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if ($element->previousSibling instanceof \DomText && trim($element->previousSibling->isElementContentWhiteSpace())) { |
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$element->parentNode->removeChild($element->previousSibling); |
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} |
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} |
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private function appendContent($element, $content) { |
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foreach ($this->getNode($content, $element->ownerDocument) as $node) { |
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$element->appendChild($node); |
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} |
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} |
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private function removeAllChildren($element) { |
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while ($element->hasChildNodes()) $element->removeChild($element->firstChild); |
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} |
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} |
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Level-2 /
Transphporm
Sometimes obsolete code just ends up commented out instead of removed. In this case it is better to remove the code once you have checked you do not need it.
The code might also have been commented out for debugging purposes. In this case it is vital that someone uncomments it again or your project may behave in very unexpected ways in production.
This check looks for comments that seem to be mostly valid code and reports them.