mods/_core/languages/classes/LanguageParser.class.php

   1 <?php
   2 /************************************************************************/
   3 /* ATutor                                                                                                                               */
   4 /************************************************************************/
   5 /* Copyright (c) 2002-2010                                              */
   6 /* Inclusive Design Institute                                           */
   7 /* http://atutor.ca                                                     */
   8 /* This program is free software. You can redistribute it and/or        */
   9 /* modify it under the terms of the GNU General Public License          */
  10 /* as published by the Free Software Foundation.                        */
  11 /************************************************************************/
  12 // $Id$
  13
  14 /**
  15 * LanguageParser
  16 * Class for parsing XML language info and returning a Language Object
  17 * @access       public
  18 * @author       Joel Kronenberg
  19 * @package      Language
  20 */
  21 class LanguageParser {
  22
  23         // all private
  24         var $parser; // the XML handler
  25         var $language_rows = array(); // the language data used for creating the Language Object
  26         var $character_data; // tmp variable for storing the data
  27         var $element_path; // array of element paths (basically a stack)
  28         var $row_num;
  29
  30         function LanguageParser() {
  31                 $this->parser = xml_parser_create('');
  32
  33                 xml_set_object($this->parser, $this);
  34                 xml_parser_set_option($this->parser, XML_OPTION_CASE_FOLDING, false); /* conform to W3C specs */
  35                 xml_set_element_handler($this->parser, 'startElement', 'endElement');
  36                 xml_set_character_data_handler($this->parser, 'characterData');
  37         }
  38
  39         // public
  40         function parse($xml_data) {
  41                 $this->element_path   = array();
  42                 $this->language_rows  = array();
  43                 $this->character_data = '';
  44                 $this->row_num        = 0;
  45                 xml_parse($this->parser, $xml_data, TRUE);
  46         }
  47
  48         // public
  49         function getLanguage($row_num) {
  50                 return new Language($this->language_rows[$row_num]);
  51         }
  52
  53         // public
  54         function getLanguageEditor($row_num) {
  55                 require_once(AT_INCLUDE_PATH.'../mods/_core/languages/classes/LanguageEditor.class.php');
  56                 return new LanguageEditor($this->language_rows[$row_num]);
  57         }
  58
  59         // private
  60         function startElement($parser, $name, $attributes) {
  61                 array_push($this->element_path, $name);
  62
  63                 if ($this->element_path == array('language')) {
  64                         $this->language_rows[$this->row_num]['language_code'] = $attributes['code'];
  65                 }
  66    }
  67
  68         // private
  69         /* called when an element ends */
  70         /* removed the current element from the $path */
  71         function endElement($parser, $name) {
  72                 if ($this->element_path == array('language', 'atutor-version')) {
  73                         $this->language_rows[$this->row_num]['version'] = trim($this->character_data);
  74
  75                 } else if ($this->element_path === array('language', 'charset')) {
  76                         $this->language_rows[$this->row_num]['char_set'] = trim($this->character_data);
  77
  78                 } else if ($this->element_path === array('language', 'direction')) {
  79                         $this->language_rows[$this->row_num]['direction'] = trim($this->character_data);
  80
  81                 } else if ($this->element_path === array('language', 'reg-exp')) {
  82                         $this->language_rows[$this->row_num]['reg_exp'] = trim($this->character_data);
  83
  84                 } else if ($this->element_path === array('language', 'native-name')) {
  85                         $this->language_rows[$this->row_num]['native_name'] = trim($this->character_data);
  86
  87                 } else if ($this->element_path === array('language', 'english-name')) {
  88                         $this->language_rows[$this->row_num]['english_name'] = trim($this->character_data);
  89
  90                 } else if ($this->element_path === array('language', 'status')) {
  91                         $this->language_rows[$this->row_num]['status'] = trim($this->character_data);
  92
  93                 } else if ($this->element_path === array('language')) {
  94                         $this->row_num++;
  95                 }
  96
  97                 array_pop($this->element_path);
  98                 $this->character_data = '';
  99         }
 100
 101         // private
 102         function characterData($parser, $data){
 103                 $this->character_data .= $data;
 104         }
 105
 106         // public
 107         function getNumLanguages() {
 108                 return count($this->language_rows);
 109         }
 110 }
 111
 112
 113
 114 ?>