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   1  <?php
   2  
   3  namespace dokuwiki\plugin\config\core\Setting;
   4  
   5  /**
   6   * Class setting_numeric
   7   */
   8  class SettingNumeric extends SettingString
   9  {
  10      // This allows for many PHP syntax errors...
  11      // var $_pattern = '/^[-+\/*0-9 ]*$/';
  12      // much more restrictive, but should eliminate syntax errors.
  13      protected $pattern = '/^[-+]? *\d+ *(?:[-+*] *\d+ *)*$/';
  14      protected $min;
  15      protected $max;
  16  
  17      /** @inheritdoc */
  18      public function update($input)
  19      {
  20          $local = $this->local;
  21          $valid = parent::update($input);
  22          if ($valid && !(is_null($this->min) && is_null($this->max))) {
  23              $numeric_local = (int) eval('return ' . $this->local . ';');
  24              if (
  25                  (!is_null($this->min) && $numeric_local < $this->min) ||
  26                  (!is_null($this->max) && $numeric_local > $this->max)
  27              ) {
  28                  $this->error = true;
  29                  $this->input = $input;
  30                  $this->local = $local;
  31                  $valid = false;
  32              }
  33          }
  34          return $valid;
  35      }
  36  
  37      /** @inheritdoc */
  38      public function out($var, $fmt = 'php')
  39      {
  40          if ($fmt != 'php') return '';
  41  
  42          $local = $this->local === '' ? "''" : $this->local;
  43          $out = '$' . $var . "['" . $this->getArrayKey() . "'] = " . $local . ";\n";
  44  
  45          return $out;
  46      }
  47  }