<?php
  /**
   * @package php-font-lib
   * @link    http://php-font-lib.googlecode.com/
   * @author  Fabien Ménager <fabien.menager@gmail.com>
   * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
   * @version $Id: encoding_map.cls.php 34 2011-10-23 13:53:25Z fabien.menager $
   */
  
  /**
   * Encoding map used to map a code point to a Unicode char.
   * 
   * @package php-font-lib
   */
  class Encoding_Map {
    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;
    }
  }