backup/cc/entity11.forum.class.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16 /**
  17  * @package   moodlecore
  18  * @subpackage backup-imscc
  19  * @copyright 2011 Darko Miletic (dmiletic@moodlerooms.com)
  20  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  21  */
  22
  23 defined('MOODLE_INTERNAL') or die('Direct access to this script is forbidden.');
  24
  25 class cc11_forum extends entities11 {
  26
  27     public function full_path($path, $dir_sep = DIRECTORY_SEPARATOR) {
  28
  29         $token = '$IMS-CC-FILEBASE$';
  30         $path = str_replace($token, '', $path);
  31
  32         if (is_string($path) && ($path != '')) {
  33             $dir_sep;
  34             $dot_dir = '.';
  35             $up_dir = '..';
  36             $length = strlen($path);
  37             $rtemp = trim($path);
  38             $start = strrpos($path, $dir_sep);
  39             $can_continue = ($start !== false);
  40             $result = $can_continue ? '' : $path;
  41             $rcount = 0;
  42
  43             while ($can_continue) {
  44
  45                 $dir_part = ($start !== false) ? substr($rtemp, $start + 1, $length - $start) : $rtemp;
  46                 $can_continue = ($dir_part !== false);
  47
  48                 if ($can_continue) {
  49                     if ($dir_part != $dot_dir) {
  50                         if ($dir_part == $up_dir) {
  51                             $rcount++;
  52                         } else {
  53                             if ($rcount > 0) {
  54                                 $rcount --;
  55                             } else {
  56                                 $result = ($result == '') ? $dir_part : $dir_part . $dir_sep . $result;
  57                             }
  58                         }
  59                     }
  60                     $rtemp = substr($path, 0, $start);
  61                     $start = strrpos($rtemp, $dir_sep);
  62                     $can_continue = (($start !== false) || (strlen($rtemp) > 0));
  63                 }
  64             }
  65         }
  66
  67         return $result;
  68     }
  69
  70     public function generate_node() {
  71
  72         cc2moodle::log_action('Creating Forum mods');
  73
  74         $response = '';
  75
  76         if (!empty(cc2moodle::$instances['instances'][MOODLE_TYPE_FORUM])) {
  77             foreach (cc2moodle::$instances['instances'][MOODLE_TYPE_FORUM] as $instance) {
  78                 $response .= $this->create_node_course_modules_mod_forum($instance);
  79             }
  80         }
  81
  82         return $response;
  83     }
  84
  85     private function create_node_course_modules_mod_forum($instance) {
  86
  87         $sheet_mod_forum = cc112moodle::loadsheet(SHEET_COURSE_SECTIONS_SECTION_MODS_MOD_FORUM);
  88
  89         $topic_data = $this->get_topic_data($instance);
  90
  91         $result = '';
  92         if (!empty($topic_data)) {
  93
  94             $find_tags = array('[#mod_instance#]',
  95                                    '[#mod_forum_title#]',
  96                                    '[#mod_forum_intro#]',
  97                                    '[#date_now#]');
  98
  99             $replace_values = array($instance['instance'],
 100             //To be more true to the actual forum name we use only forum title
 101             self::safexml($topic_data['title']),
 102             self::safexml($topic_data['description']),
 103             time());
 104
 105             $result = str_replace($find_tags, $replace_values, $sheet_mod_forum);
 106
 107         }
 108
 109         return $result;
 110     }
 111
 112     public function get_topic_data($instance) {
 113
 114         $topic_data = array();
 115
 116         $topic_file = $this->get_external_xml($instance['resource_indentifier']);
 117
 118         if (!empty($topic_file)) {
 119
 120             $topic_file_path = cc2moodle::$path_to_manifest_folder . DIRECTORY_SEPARATOR . $topic_file;
 121             $topic_file_dir = dirname($topic_file_path);
 122             $topic = $this->load_xml_resource($topic_file_path);
 123
 124             if (!empty($topic)) {
 125
 126                 $xpath = cc2moodle::newx_path($topic, cc112moodle::$forumns);
 127
 128                 $topic_title = $xpath->query('/dt:topic/dt:title');
 129                 if ($topic_title->length > 0 && !empty($topic_title->item(0)->nodeValue)) {
 130                     $topic_title = $topic_title->item(0)->nodeValue;
 131                 } else {
 132                     $topic_title = 'Untitled Topic';
 133                 }
 134
 135                 $topic_text = $xpath->query('/dt:topic/dt:text');
 136                 $topic_text = !empty($topic_text->item(0)->nodeValue) ? $this->update_sources($topic_text->item(0)->nodeValue, dirname($topic_file)) : '';
 137                 $topic_text = !empty($topic_text) ? str_replace("%24", "\$", $this->include_titles($topic_text)) : '';
 138
 139                 if (!empty($topic_title)) {
 140                     $topic_data['title'] = $topic_title;
 141                     $topic_data['description'] = $topic_text;
 142                 }
 143             }
 144
 145             $topic_attachments = $xpath->query('/dt:topic/dt:attachments/dt:attachment/@href');
 146
 147             if ($topic_attachments->length > 0) {
 148
 149                 $attachment_html = '';
 150
 151                 foreach ($topic_attachments as $file) {
 152                     $attachment_html .= $this->generate_attachment_html($this->full_path($file->nodeValue,'/'));
 153                 }
 154
 155                 $topic_data['description'] = !empty($attachment_html) ? $topic_text . '<p>Attachments:</p>' . $attachment_html : $topic_text;
 156             }
 157         }
 158
 159         return $topic_data;
 160     }
 161
 162     private function generate_attachment_html($filename) {
 163
 164         $images_extensions = array('gif' , 'jpeg' , 'jpg' , 'jif' , 'jfif' , 'png' , 'bmp');
 165
 166         $fileinfo = pathinfo($filename);
 167
 168         if (in_array($fileinfo['extension'], $images_extensions)) {
 169             return '<img src="$@FILEPHP@$/' . $filename . '" title="' . $fileinfo['basename'] . '" alt="' . $fileinfo['basename'] . '" /><br />';
 170         } else {
 171             return '<a href="$@FILEPHP@$/' . $filename . '" title="' . $fileinfo['basename'] . '" alt="' . $fileinfo['basename'] . '">' . $fileinfo['basename'] . '</a><br />';
 172         }
 173
 174         return '';
 175     }
 176 }
 177