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vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Length.php 1.85 KB
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  <?php
  
  /**
   * Represents a Length as defined by CSS.
   */
  class HTMLPurifier_AttrDef_CSS_Length extends HTMLPurifier_AttrDef
  {
  
      /**
       * @type HTMLPurifier_Length|string
       */
      protected $min;
  
      /**
       * @type HTMLPurifier_Length|string
       */
      protected $max;
  
      /**
       * @param HTMLPurifier_Length|string $min Minimum length, or null for no bound. String is also acceptable.
       * @param HTMLPurifier_Length|string $max Maximum length, or null for no bound. String is also acceptable.
       */
      public function __construct($min = null, $max = null)
      {
          $this->min = $min !== null ? HTMLPurifier_Length::make($min) : null;
          $this->max = $max !== null ? HTMLPurifier_Length::make($max) : null;
      }
  
      /**
       * @param string $string
       * @param HTMLPurifier_Config $config
       * @param HTMLPurifier_Context $context
       * @return bool|string
       */
      public function validate($string, $config, $context)
      {
          $string = $this->parseCDATA($string);
  
          // Optimizations
          if ($string === '') {
              return false;
          }
          if ($string === '0') {
              return '0';
          }
          if (strlen($string) === 1) {
              return false;
          }
  
          $length = HTMLPurifier_Length::make($string);
          if (!$length->isValid()) {
              return false;
          }
  
          if ($this->min) {
              $c = $length->compareTo($this->min);
              if ($c === false) {
                  return false;
              }
              if ($c < 0) {
                  return false;
              }
          }
          if ($this->max) {
              $c = $length->compareTo($this->max);
              if ($c === false) {
                  return false;
              }
              if ($c > 0) {
                  return false;
              }
          }
          return $length->toString();
      }
  }
  
  // vim: et sw=4 sts=4