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<?php |
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/** |
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* @package s9e\TextFormatter |
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* @copyright Copyright (c) 2010-2017 The s9e Authors |
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* @license http://www.opensource.org/licenses/mit-license.php The MIT License |
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*/ |
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namespace s9e\TextFormatter\Configurator\TemplateNormalizations; |
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use DOMAttr; |
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use DOMElement; |
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use s9e\TextFormatter\Configurator\Helpers\AVTHelper; |
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class InlineXPathLiterals extends AbstractNormalization |
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{ |
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/** |
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* {@inheritdoc} |
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*/ |
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protected $queries = [ |
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'//xsl:value-of', |
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'//*[namespace-uri() != $XSL]/@*[contains(., "{")]' |
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]; |
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/** |
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* Return the textContent value of an XPath expression |
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* |
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* @param string $expr XPath expression |
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* @return string|bool Text value, or FALSE if not a literal |
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*/ |
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protected function getTextContent($expr) |
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{ |
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$expr = trim($expr); |
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if (preg_match('(^(?:\'[^\']*\'|"[^"]*")$)', $expr)) |
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{ |
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return substr($expr, 1, -1); |
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} |
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if (preg_match('(^0*([0-9]+(?:\\.[0-9]+)?)$)', $expr, $m)) |
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{ |
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// NOTE: we specifically ignore leading zeros |
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return $m[1]; |
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} |
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return false; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function normalizeAttribute(DOMAttr $attribute) |
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{ |
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AVTHelper::replace( |
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$attribute, |
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function ($token) |
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{ |
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if ($token[0] === 'expression') |
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{ |
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$textContent = $this->getTextContent($token[1]); |
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if ($textContent !== false) |
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{ |
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// Turn this token into a literal |
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$token = ['literal', $textContent]; |
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} |
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} |
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return $token; |
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} |
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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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protected function normalizeElement(DOMElement $element) |
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{ |
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$textContent = $this->getTextContent($element->getAttribute('select')); |
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if ($textContent !== false) |
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{ |
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$element->parentNode->replaceChild($this->createTextNode($textContent), $element); |
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} |
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} |
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} |
s9e /
TextFormatter
