<?php
  /**
   * @package php-font-lib
   * @link    https://github.com/dompdf/php-font-lib
   * @author  Fabien Ménager <fabien.menager@gmail.com>
   * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
   */
  
  namespace FontLib;
  
  /**
   * Encoding map used to map a code point to a Unicode char.
   *
   * @package php-font-lib
   */
  class EncodingMap {
    private $f;
  
    function __construct($file) {
      $this->f = fopen($file, "r");
    }
  
    function parse() {
      $map = array();
  
      while ($line = fgets($this->f)) {
        if (preg_match('/^[\!\=]([0-9A-F]{2,})\s+U\+([0-9A-F]{2})([0-9A-F]{2})\s+([^\s]+)/', $line, $matches)) {
          $unicode = (hexdec($matches[2]) << 8) + hexdec($matches[3]);
          $map[hexdec($matches[1])] = array($unicode, $matches[4]);
        }
      }
  
      ksort($map);
  
      return $map;
    }
  }