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   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 DOMNode;
  11  
  12  /**
  13  * Remove all inter-element whitespace except for single space characters
  14  */
  15  class PreserveSingleSpaces extends AbstractNormalization
  16  {
  17      /**
  18      * {@inheritdoc}
  19      */
  20      protected $queries = ['//text()[. = " "][not(parent::xsl:text)]'];
  21  
  22      /**
  23      * {@inheritdoc}
  24      */
  25  	protected function normalizeNode(DOMNode $node)
  26      {
  27          $node->parentNode->replaceChild($this->createElement('xsl:text', ' '), $node);
  28      }
  29  }