[Summary view] [Print] [Text view]

   1  <?php
   2  
   3  /**
   4  * @package   s9e\TextFormatter
   5  * @copyright Copyright (c) 2010-2022 The s9e authors
   6  * @license   http://www.opensource.org/licenses/mit-license.php The MIT License
   7  */
   8  namespace s9e\TextFormatter\Configurator\TemplateNormalizations;
   9  
  10  use DOMAttr;
  11  use DOMElement;
  12  use s9e\TextFormatter\Configurator\Helpers\AVTHelper;
  13  
  14  class InlineXPathLiterals extends AbstractNormalization
  15  {
  16      /**
  17      * {@inheritdoc}
  18      */
  19      protected $queries = [
  20          '//xsl:value-of',
  21          '//*[namespace-uri() != $XSL]/@*[contains(., "{")]'
  22      ];
  23  
  24      /**
  25      * Return the textContent value of an XPath expression
  26      *
  27      * @param  string      $expr XPath expression
  28      * @return string|bool       Text value, or FALSE if not a literal
  29      */
  30  	protected function getTextContent($expr)
  31      {
  32          $regexp = '(^(?|\'([^\']*)\'|"([^"]*)"|0*([0-9]+(?:\\.[0-9]+)?)|(false|true)\\s*\\(\\s*\\))$)';
  33          if (preg_match($regexp, trim($expr), $m))
  34          {
  35              return $m[1];
  36          }
  37  
  38          return false;
  39      }
  40  
  41      /**
  42      * {@inheritdoc}
  43      */
  44  	protected function normalizeAttribute(DOMAttr $attribute)
  45      {
  46          AVTHelper::replace(
  47              $attribute,
  48              function ($token)
  49              {
  50                  if ($token[0] === 'expression')
  51                  {
  52                      $textContent = $this->getTextContent($token[1]);
  53                      if ($textContent !== false)
  54                      {
  55                          // Turn this token into a literal
  56                          $token = ['literal', $textContent];
  57                      }
  58                  }
  59  
  60                  return $token;
  61              }
  62          );
  63      }
  64  
  65      /**
  66      * {@inheritdoc}
  67      */
  68  	protected function normalizeElement(DOMElement $element)
  69      {
  70          $textContent = $this->getTextContent($element->getAttribute('select'));
  71          if ($textContent !== false)
  72          {
  73              $element->parentNode->replaceChild($this->createText($textContent), $element);
  74          }
  75      }
  76  }