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   1  <?php
   2  
   3  namespace dokuwiki\Parsing\ParserMode;
   4  
   5  use dokuwiki\Parsing\Handler;
   6  use dokuwiki\Parsing\Lexer\Lexer;
   7  
   8  class Acronym extends AbstractMode
   9  {
  10      protected $acronyms = [];
  11      protected $pattern = '';
  12  
  13      /**
  14       * Acronym constructor.
  15       *
  16       * @param string[] $acronyms
  17       */
  18      public function __construct($acronyms)
  19      {
  20          usort($acronyms, $this->compare(...));
  21          $this->acronyms = $acronyms;
  22      }
  23  
  24      /** @inheritdoc */
  25      public function getSort()
  26      {
  27          return 240;
  28      }
  29  
  30      /** @inheritdoc */
  31      public function preConnect()
  32      {
  33          if (!count($this->acronyms)) return;
  34  
  35          $bound = '[\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]';
  36          $acronyms = array_map(Lexer::escape(...), $this->acronyms);
  37          $this->pattern = '(?<=^|' . $bound . ')(?:' . implode('|', $acronyms) . ')(?=' . $bound . ')';
  38      }
  39  
  40      /** @inheritdoc */
  41      public function connectTo($mode)
  42      {
  43          if (!count($this->acronyms)) return;
  44  
  45          if ((string) $this->pattern !== '') {
  46              $this->Lexer->addSpecialPattern($this->pattern, $mode, 'acronym');
  47          }
  48      }
  49  
  50      /** @inheritdoc */
  51      public function handle($match, $state, $pos, Handler $handler)
  52      {
  53          $handler->addCall('acronym', [$match], $pos);
  54          return true;
  55      }
  56  
  57      /**
  58       * Sort callback to order by string length descending
  59       *
  60       * @param string $a
  61       * @param string $b
  62       * @return int
  63       */
  64      protected function compare($a, $b)
  65      {
  66          return strlen($b) <=> strlen($a);
  67      }
  68  }