/home/classes/ContentUtility.class.php
PHP | 1071 lines | 683 code | 153 blank | 235 comment | 206 complexity | 1b9b974df1a54e2888663376cb4ac735 MD5 | raw file
Possible License(s): LGPL-2.0, LGPL-2.1, MPL-2.0-no-copyleft-exception, MIT, AGPL-1.0
- <?php
- /************************************************************************/
- /* AContent */
- /************************************************************************/
- /* Copyright (c) 2013 */
- /* Inclusive Design Institute */
- /* */
- /* This program is free software. You can redistribute it and/or */
- /* modify it under the terms of the GNU General Public License */
- /* as published by the Free Software Foundation. */
- /************************************************************************/
-
- /**
- * Content Utility functions
- * @access public
- * @author Cindy Qi Li
- */
-
- if (!defined('TR_INCLUDE_PATH')) exit;
-
- class ContentUtility {
-
- /**
- * This function cuts out html body
- * @access public
- * @param $text html text
- * @author Cindy Qi Li
- */
- public static function getHtmlBody($text) {
- /* strip everything before <body> */
- $start_pos = strpos(strtolower($text), '<body');
- if ($start_pos !== false) {
- $start_pos += strlen('<body');
- $end_pos = strpos(strtolower($text), '>', $start_pos);
- $end_pos += strlen('>');
-
- $text = substr($text, $end_pos);
- }
-
- /* strip everything after </body> */
- $end_pos = strpos(strtolower($text), '</body>');
- if ($end_pos !== false) {
- $text = trim(substr($text, 0, $end_pos));
- }
-
- return $text;
- }
-
- public static function getHTMLContent($text) {
- //remove the content div if it exists
-
-
-
- if(strpos($text,'<div id="content">') !== false && strstr($text, '<div id="content">', true) == "") {
- //the div element with id=content is the first element so I remove it
- $text = substr($text, strlen('<div id="content">'));
- $text = trim(substr($text, 0, strlen($text)-strlen('</div>')));
- }
-
- return $text;
- }
-
-
- /**
- * This function cuts out requested tag information from html head
- * @access public
- * @param $text html text
- * @param $tags a string or an array of requested tags
- * @author Cindy Qi Li
- */
- public static function getHtmlHeadByTag($text, $tags)
- {
- $head = ContentUtility::getHtmlHead($text);
- $rtn_text = "";
-
- if (!is_array($tags) && strlen(trim($tags)) > 0)
- {
- $tags = array(trim($tags));
- }
- foreach ($tags as $tag)
- {
- $tag = strtolower($tag);
-
- /* strip everything before <{tag}> */
- $start_pos = stripos($head, '<'.$tag);
- $temp_head = $head;
-
- while ($start_pos !== false)
- {
- $temp_text = substr($temp_head, $start_pos);
-
- /* strip everything after </{tag}> or />*/
- $end_pos = stripos($temp_text, '</' . $tag . '>');
-
- if ($end_pos !== false)
- {
- $end_pos += strlen('</' . $tag . '>');
-
- // add an empty line after each tag information
- $rtn_text .= trim(substr($temp_text, 0, $end_pos)) . '
-
- ';
- }
- else // match /> as ending tag if </tag> is not found
- {
- $end_pos = stripos($temp_text, '/>');
-
- if($end_pos === false && stripos($temp_text, $tag.'>')===false){
- //if /> is not found, then this is not a valid XHTML
- //text iff it's not tag>
- $end_pos = stripos($temp_text, '>');
- $end_pos += strlen('>');
- } else {
- $end_pos += strlen('/>');
- }
- // add an empty line after each tag information
- $rtn_text .= trim(substr($temp_text, 0, $end_pos)) . '
-
- ';
- }
-
- // initialize vars for next round of matching
- $temp_head = substr($temp_text, $end_pos);
- $start_pos = stripos($temp_head, '<'.$tag);
- }
- }
- return $rtn_text;
- }
-
- /**
- * This function cuts out html head
- * @access private
- * @param $text html text
- * @author Cindy Qi Li
- */
- private static function getHtmlHead ($text) {
- /* strip everything before <head> */
- $start_pos = stripos($text, '<head');
- if ($start_pos !== false) {
- $start_pos += strlen('<head');
- $end_pos = stripos($text, '>', $start_pos);
- $end_pos += strlen('>');
-
- $text = substr($text, $end_pos);
- }
-
- /* strip everything after </head> */
- $end_pos = stripos($text, '</head');
- if ($end_pos !== false) {
- $text = trim(substr($text, 0, $end_pos));
- }
- return $text;
- }
-
- private static function embedFLV($text) {
- global $content_base_href;
-
- $media_replace = array();
- $media_matches = array();
- $flowplayerholder_class = "atutor.flowplayerholder"; // style class used to play flowplayer medias
- $flowplayerholder_def = '$f("*.'.$flowplayerholder_class.'"'; // javascript definition for atutor.flowplayerholder
-
- // .flv
- preg_match_all("#\[media[0-9a-z\|]*\]([.\w\d]+[^\s\"]+)\.flv\[/media\]#i",$text,$media_matches[],PREG_SET_ORDER);
-
- if (isset($_SESSION['flash']) && $_SESSION['flash'] == "yes") {
- $media_replace[] = "<div>\n".
- " <a class=\"".$flowplayerholder_class."\" style=\"display:block;width:##WIDTH##px;height:##HEIGHT##px;\" href=\"##MEDIA1##.flv\"></a>\n".
- "</div>\n";
- } else {
- $media_replace[] = "<div>\n".
- " <a href=\"##MEDIA1##.flv\">##MEDIA1##.flv</a>\n".
- "</div>\n";
- }
-
- // .mp4
- preg_match_all("#\[media[0-9a-z\|]*\]([.\w\d]+[^\s\"]+)\.mp4\[/media\]#i",$text,$media_matches[],PREG_SET_ORDER);
-
- if (isset($_SESSION['flash']) && $_SESSION['flash'] == "yes") {
- $media_replace[] = "<div>\n".
- " <a class=\"".$flowplayerholder_class."\" style=\"display:block;width:##WIDTH##px;height:##HEIGHT##px;\" href=\"##MEDIA1##.mp4\"></a>\n".
- "</div>\n";
- } else {
- $media_replace[] = "<div>\n".
- " <a href=\"##MEDIA1##.mp4\">##MEDIA1##.mp4</a>\n".
- "</div>\n";
- }
-
- // Executing the replace
- for ($i=0;$i<count($media_replace);$i++){
- foreach($media_matches[$i] as $media)
- {
- //find width and height for each matched media
- if (preg_match("/\[media\|([0-9]*)\|([0-9]*)\]*/", $media[0], $matches))
- {
- $width = $matches[1];
- $height = $matches[2];
- }
- else
- {
- $width = 425;
- $height = 350;
- }
-
- //replace media tags with embedded media for each media tag
- $media_input = $media_replace[$i];
- $media_input = str_replace("##WIDTH##","$width",$media_input);
- $media_input = str_replace("##HEIGHT##","$height",$media_input);
- $media_input = str_replace("##MEDIA1##","$media[1]",$media_input);
- $media_input = str_replace("##MEDIA2##","$media[2]",$media_input);
- $text = str_replace($media[0],$media_input,$text);
- }
- }
-
- // Include the javascript only if:
- // 1. $flowplayerholder_class is used but not defined
- // 2. exclude from export common cartridge or content package
- if (strpos($text, $flowplayerholder_class)
- && !strpos($text, $flowplayerholder_def)
- && !strpos($_SERVER['PHP_SELF'], "ims_export.php"))
- {
- $text .= '<script type="text/javascript">
- '.$flowplayerholder_def.', "'.TR_BASE_HREF.'include/jscripts/flowplayer/flowplayer-3.2.4.swf", {
- clip: {
- autoPlay: false,
- baseUrl: \''.TR_BASE_HREF.'get.php/'.$content_base_href.'\'},
- plugins: {
- controls: {
- buttons:true,
- play: true,
- scrubber: true,
- autoHide:false
- }
- }
- });
- </script>'."\n";
- }
- return $text;
- }
-
- /*
- * This function converts the youtube playable url used in <object> tag (for instance: http://www.youtube.com/v/a0ryB0m0MiM)
- * to youtube url that is used to browse (for instance: http://www.youtube.com/watch?v=a0ryB0m0MiM)
- * @param: youtube playable URL. For instance, http://www.youtube.com/v/a0ryB0m0MiM
- * @return: if the param is a youtube playable url, return the according youtube URL used to browse.
- * For instance: http://www.youtube.com/watch?v=a0ryB0m0MiM
- * Otherwise, return the original send-in parameter.
- */
- public static function convertYoutubePlayURLToWatchURL($youtube_playURL) {
- return preg_replace("/(http:\/\/[a-z0-9\.]*)?youtube.com\/v\/(.*)/",
- "\\1youtube.com/watch?v=\\2", $youtube_playURL);
- }
-
- /*
- * This function converts the youtube url that is used to browse (for instance: http://www.youtube.com/watch?v=a0ryB0m0MiM)
- * to youtube playable url used in <object> tag (for instance: http://www.youtube.com/v/a0ryB0m0MiM)
- * @param: the youtube URL used to browse.
- * For instance: http://www.youtube.com/watch?v=a0ryB0m0MiM
- * @return: if the param is a youtube url used to browse, return the according youtube playable URL.
- * For instance, http://www.youtube.com/v/a0ryB0m0MiM
- * Otherwise, return the original send-in parameter.
- */
- public function convertYoutubeWatchURLToPlayURL($youtube_watchURL) {
- return preg_replace("/(http:\/\/[a-z0-9\.]*)?youtube.com\/watch\?v=(.*)/",
- "\\1youtube.com/v/\\2", $youtube_watchURL);
- }
-
- public static function embedMedia($text) {
- if (preg_match("/\[media(\|[0-9]+\|[0-9]+)?\]*/", $text)==0){
- return $text;
- }
-
- // remove the spaces in [media] tag, otherwise, the next line converts URL inside [media] into <a> tag
- $text = preg_replace("/(\[media\])([\s]*)(.*)(\[\/media\])/", '$1$3$4', $text);
- $text = preg_replace("/(\[media\])(.*)([\s]*)(\[\/media\])/U", '$1$2$4', $text);
-
- $media_matches = array();
- $media_replace = array();
-
- // First, we search though the text for all different kinds of media defined by media tags and store the results in $media_matches.
- // Then the different replacements for the different media tags are stored in $media_replace.
- // Lastly, we loop through all $media_matches / $media_replaces. (We choose $media_replace as index because $media_matches is multi-dimensioned.) It is important that for each $media_matches there is a $media_replace with the same index. For each media match we check the width/height, or we use the default value of 425x350. We then replace the height/width/media1/media2 parameter placeholders in $media_replace with the correct ones, before running a str_replace on $text, replacing the given media with its correct replacement.
-
- // youtube videos
- preg_match_all("#\[media[0-9a-z\|]*\]http://([a-z0-9\.]*)?youtube.com/watch\?v=(.*)\[/media\]#iU",$text,$media_matches[],PREG_SET_ORDER);
- $media_replace[] = '<object width="##WIDTH##" height="##HEIGHT##"><param name="movie" value="http://##MEDIA1##youtube.com/v/##MEDIA2##"></param><embed src="http://##MEDIA1##youtube.com/v/##MEDIA2##" type="application/x-shockwave-flash" width="##WIDTH##" height="##HEIGHT##"></embed></object>';
-
- // .mpg
- preg_match_all("#\[media[0-9a-z\|]*\]([.\w\d]+[^\s\"]+).mpg\[/media\]#i",$text,$media_matches[],PREG_SET_ORDER);
- $media_replace[] = "<object data=\"##MEDIA1##.mpg\" type=\"video/mpeg\" width=\"##WIDTH##\" height=\"##HEIGHT##\"><param name=\"src\" value=\"##MEDIA1##.mpg\"><param name=\"autoplay\" value=\"false\"><param name=\"autoStart\" value=\"0\"><a href=\"##MEDIA1##.mpg\">##MEDIA1##.mpg</a></object>";
-
- // .avi
- preg_match_all("#\[media[0-9a-z\|]*\]([.\w\d]+[^\s\"]+).avi\[/media\]#i",$text,$media_matches[],PREG_SET_ORDER);
- $media_replace[] = "<object data=\"##MEDIA1##.avi\" type=\"video/x-msvideo\" width=\"##WIDTH##\" height=\"##HEIGHT##\"><param name=\"src\" value=\"##MEDIA1##.avi\"><param name=\"autoplay\" value=\"false\"><param name=\"autoStart\" value=\"0\"><a href=\"##MEDIA1##.avi\">##MEDIA1##.avi</a></object>";
-
- // .wmv
- preg_match_all("#\[media[0-9a-z\|]*\]([.\w\d]+[^\s\"]+).wmv\[/media\]#i",$text,$media_matches[],PREG_SET_ORDER);
- $media_replace[] = "<object data=\"##MEDIA1##.wmv\" type=\"video/x-ms-wmv\" width=\"##WIDTH##\" height=\"##HEIGHT##\"><param name=\"src\" value=\"##MEDIA1##.wmv\"><param name=\"autoplay\" value=\"false\"><param name=\"autoStart\" value=\"0\"><a href=\"##MEDIA1##.wmv\">##MEDIA1##.wmv</a></object>";
-
- // .mov
- preg_match_all("#\[media[0-9a-z\|]*\]([.\w\d]+[^\s\"]+).mov\[/media\]#i",$text,$media_matches[],PREG_SET_ORDER);
- $media_replace[] = "<object classid=\"clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B\" codebase=\"http://www.apple.com/qtactivex/qtplugin.cab\" width=\"##WIDTH##\" height=\"##HEIGHT##\">\n".
- " <param name=\"src\" value=\"##MEDIA1##.mov\">\n".
- " <param name=\"controller\" value=\"true\">\n".
- " <param name=\"autoplay\" value=\"false\">\n".
- " <!--[if gte IE 7] > <!-->\n".
- " <object type=\"video/quicktime\" data=\"##MEDIA1##.mov\" width=\"##WIDTH##\" height=\"##HEIGHT##\">\n".
- " <param name=\"controller\" value=\"true\">\n".
- " <param name=\"autoplay\" value=\"false\">\n".
- " <a href=\"##MEDIA1##.mov\">##MEDIA1##.mov</a>\n".
- " </object>\n".
- " <!--<![endif]-->\n".
- " <!--[if lt IE 7]>\n".
- " <a href=\"##MEDIA1##.mov\">##MEDIA1##.mov</a>\n".
- " <![endif]-->\n".
- "</object>";
-
- // .swf
- preg_match_all("#\[media[0-9a-z\|]*\]([.\w\d]+[^\s\"]+).swf\[/media\]#i",$text,$media_matches[],PREG_SET_ORDER);
- $media_replace[] = "<object type=\"application/x-shockwave-flash\" data=\"##MEDIA1##.swf\" width=\"##WIDTH##\" height=\"##HEIGHT##\"> <param name=\"movie\" value=\"##MEDIA1##.swf\"><param name=\"loop\" value=\"false\"><a href=\"##MEDIA1##.swf\">##MEDIA1##.swf</a></object>";
-
- // .mp3
- preg_match_all("#\[media[0-9a-z\|]*\]([.\w\d]+[^\s\"]+).mp3\[/media\]#i",$text,$media_matches[],PREG_SET_ORDER);
- $media_replace[] = "<object type=\"audio/mpeg\" data=\"##MEDIA1##.mp3\" width=\"##WIDTH##\" height=\"##HEIGHT##\"><param name=\"src\" value=\"##MEDIA1##.mp3\"><param name=\"autoplay\" value=\"false\"><param name=\"autoStart\" value=\"0\"><a href=\"##MEDIA1##.mp3\">##MEDIA1##.mp3</a></object>";
-
- // .wav
- preg_match_all("#\[media[0-9a-z\|]*\](.+[^\s\"]+).wav\[/media\]#i",$text,$media_matches[],PREG_SET_ORDER);
- $media_replace[] ="<object type=\"audio/x-wav\" data=\"##MEDIA1##.wav\" width=\"##WIDTH##\" height=\"##HEIGHT##\"><param name=\"src\" value=\"##MEDIA1##.wav\"><param name=\"autoplay\" value=\"false\"><param name=\"autoStart\" value=\"0\"><a href=\"##MEDIA1##.wav\">##MEDIA1##.wav</a></object>";
-
- // .ogg
- preg_match_all("#\[media[0-9a-z\|]*\](.+[^\s\"]+).ogg\[/media\]#i",$text,$media_matches[],PREG_SET_ORDER);
- $media_replace[] ="<object type=\"application/ogg\" data=\"##MEDIA1##.ogg\" width=\"##WIDTH##\" height=\"##HEIGHT##\"><param name=\"src\" value=\"##MEDIA1##.ogg\"><a href=\"##MEDIA1##.ogg\">##MEDIA1##.ogg</a></object>";
-
- // .ogm
- preg_match_all("#\[media[0-9a-z\|]*\](.+[^\s\"]+).ogm\[/media\]#i",$text,$media_matches[],PREG_SET_ORDER);
- $media_replace[] ="<object type=\"application/ogm\" data=\"##MEDIA1##.ogm\" width=\"##WIDTH##\" height=\"##HEIGHT##\"><param name=\"src\" value=\"##MEDIA1##.ogm\"><a href=\"##MEDIA1##.ogg\">##MEDIA1##.ogm</a></object>";
-
- // .mid
- preg_match_all("#\[media[0-9a-z\|]*\](.+[^\s\"]+).mid\[/media\]#i",$text,$media_matches[],PREG_SET_ORDER);
- $media_replace[] ="<object type=\"application/x-midi\" data=\"##MEDIA1##.mid\" width=\"##WIDTH##\" height=\"##HEIGHT##\"><param name=\"src\" value=\"##MEDIA1##.mid\"><a href=\"##MEDIA1##.mid\">##MEDIA1##.mid</a></object>";
-
- $text = preg_replace("#\[media[0-9a-z\|]*\](.+[^\s\"]+).mid\[/media\]#i", "<object type=\"application/x-midi\" data=\"\\1.mid\" width=\"".$width."\" height=\"".$height."\"><param name=\"src\" value=\"\\1.mid\"><a href=\"\\1.mid\">\\1.mid</a></object>", $text);
-
- // Executing the replace
- for ($i=0;$i<count($media_replace);$i++){
- foreach($media_matches[$i] as $media)
- {
-
- //find width and height for each matched media
- if (preg_match("/\[media\|([0-9]*)\|([0-9]*)\]*/", $media[0], $matches))
- {
- $width = $matches[1];
- $height = $matches[2];
- }
- else
- {
- $width = 425;
- $height = 350;
- }
-
- //replace media tags with embedded media for each media tag
- $media_input = $media_replace[$i];
- $media_input = str_replace("##WIDTH##","$width",$media_input);
- $media_input = str_replace("##HEIGHT##","$height",$media_input);
- $media_input = str_replace("##MEDIA1##","$media[1]",$media_input);
- $media_input = str_replace("##MEDIA2##","$media[2]",$media_input);
- $text = str_replace($media[0],$media_input,$text);
- }
- }
-
- return $text;
- }
-
- public static function makeClickable($text) {
- $text = ContentUtility::embedMedia($text);
-
- // convert plain text URL to clickable URL.
- // Limited conversion: It doesn't cover the case when the stuff in front of the URL is not a word. For example:
- // <p>http://google.ca</p>
- // "http://google.ca"
- $text = preg_replace('/(^|[\n ])([\w]*?)((?<!(\[media\]))http(s)?:\/\/[\w]+[^ \,\"\n\r\t\)<]*)/is',
- '$1$2<a href="$3">$3</a>', $text);
-
- // convert email address to clickable URL that pops up "send email" interface with the address filled in
- $text = preg_replace('/(?|<a href="mailto[\s]*:[\s]*([_a-zA-Z0-9\-]+(\.[_a-zA-Z0-9\-]+)*'.'\@'
- .'[_a-zA-Z0-9\-]+(\.[_a-zA-Z0-9\-]+)*'.'(\.[a-zA-Z]{1,6})+)">(.*)<\/a>'
- .'|((((([_a-zA-Z0-9\-]+(\.[_a-zA-Z0-9\-]+)*'.'\@'
- .'[_a-zA-Z0-9\-]+(\.[_a-zA-Z0-9\-]+)*'.'(\.[a-zA-Z]{1,6})+))))))/i',
- "<a href=\"mailto:\\1\">\\5</a>",
- $text);
-
- // flv conversion needs to come after url conversion (2 lines above) otherwise the url to flowplayer swf file
- // in the script for a.flowplayerholder is converted
- $text = ContentUtility::embedFLV($text);
-
- return $text;
- }
-
- public static function myCodes($text, $html = false) {
- global $_base_path;
- global $HTTP_USER_AGENT;
-
- if (substr($HTTP_USER_AGENT,0,11) == 'Mozilla/4.7') {
- $text = str_replace('[quote]','</p><p class="block">',$text);
- $text = str_replace('[/quote]','</p><p>',$text);
-
- $text = str_replace('[reply]','</p><p class="block">',$text);
- $text = str_replace('[/reply]','</p><p>',$text);
- } else {
- $text = str_replace('[quote]','<blockquote>',$text);
- $text = str_replace('[/quote]','</blockquote><p>',$text);
-
- $text = str_replace('[reply]','</p><blockquote class="block"><p>',$text);
- $text = str_replace('[/reply]','</p></blockquote><p>',$text);
- }
-
- $text = str_replace('[b]','<strong>',$text);
- $text = str_replace('[/b]','</strong>',$text);
-
- $text = str_replace('[i]','<em>',$text);
- $text = str_replace('[/i]','</em>',$text);
-
- $text = str_replace('[u]','<u>',$text);
- $text = str_replace('[/u]','</u>',$text);
-
- $text = str_replace('[center]','<center>',$text);
- $text = str_replace('[/center]','</center><p>',$text);
-
- /* colours */
- $text = str_replace('[blue]','<span style="color: blue;">',$text);
- $text = str_replace('[/blue]','</span>',$text);
-
- $text = str_replace('[orange]','<span style="color: orange;">',$text);
- $text = str_replace('[/orange]','</span>',$text);
-
- $text = str_replace('[red]','<span style="color: red;">',$text);
- $text = str_replace('[/red]','</span>',$text);
-
- $text = str_replace('[purple]','<span style="color: purple;">',$text);
- $text = str_replace('[/purple]','</span>',$text);
-
- $text = str_replace('[green]','<span style="color: green;">',$text);
- $text = str_replace('[/green]','</span>',$text);
-
- $text = str_replace('[gray]','<span style="color: gray;">',$text);
- $text = str_replace('[/gray]','</span>',$text);
-
- $text = str_replace('[op]','<span class="bigspacer"></span> <a href="',$text);
- $text = str_replace('[/op]','">'._AT('view_entire_post').'</a>',$text);
-
- $text = str_replace('[head1]','<h2>',$text);
- $text = str_replace('[/head1]','</h2>',$text);
-
- $text = str_replace('[head2]','<h3>',$text);
- $text = str_replace('[/head2]','</h3>',$text);
-
- $text = str_replace('[cid]',$_base_path.'content.php?_cid='.$_SESSION['s_cid'],$text);
-
- global $sequence_links, $_course_id, $_content_id;
- if ($_course_id > 0 && !isset($sequence_links) && $_content_id > 0) {
- global $contentManager;
- $sequence_links = $contentManager->generateSequenceCrumbs($_content_id);
- }
- if (isset($sequence_links['previous']) && $sequence_links['previous']['url']) {
- $text = str_replace('[pid]', $sequence_links['previous']['url'], $text);
- }
- if (isset($sequence_links['next']) && $sequence_links['next']['url']) {
- $text = str_replace('[nid]', $sequence_links['next']['url'], $text);
- }
- if (isset($sequence_links['resume']) && $sequence_links['resume']['url']) {
- $text = str_replace('[nid]', $sequence_links['resume']['url'], $text);
- }
- if (isset($sequence_links['first']) && $sequence_links['first']['url']) {
- $text = str_replace('[fid]', $sequence_links['first']['url'], $text);
- }
-
- /* contributed by Thomas M. Duffey <tduffey at homeboyz.com> */
- $html = !$html ? 0 : 1;
-
- // little hack added by greg to add syntax highlighting without using <?php \?\>
-
- $text = str_replace("[code]","[code]<?php",$text);
- $text = str_replace("[/code]","?>[/code]",$text);
-
- $text = preg_replace("/\[code\]\s*(.*)\s*\[\\/code\]/Usei", "ContentUtility::highlightCode(ContentUtility::fixQuotes('\\1'), $html)", $text);
- // now remove the <?php added above and leave the syntax colour behind.
- $text = str_replace("<?php", "", $text);
- $text = str_replace("?>", "", $text);
-
- return $text;
- }
-
- /* contributed by Thomas M. Duffey <tduffey at homeboyz.com> */
- private static function highlightCode($code, $html) {
- // XHTMLize PHP highlight_string output until it gets fixed in PHP
- static $search = array(
- '<br>',
- '<font',
- '</font>',
- 'color="');
-
- static $replace = array(
- '<br />',
- '<span',
- '</span>',
- 'style="color:');
- if (!$html) {
- $code = str_replace('<', '<', $code);
- $code = str_replace("\r", '', $code);
- }
-
- return str_replace($search, $replace, highlight_string($code, true));
- }
-
- /* contributed by Thomas M. Duffey <tduffey at homeboyz.com> */
- private static function fixQuotes($text){
- return str_replace('\\"', '"', $text);
- }
-
- public static function imageReplace($text) {
- /* image urls do not require http:// */
-
- // $text = eregi_replace("\[image(\|)?([[:alnum:][:space:]]*)\]" .
- // "[:space:]*" .
- // "([[:alnum:]#?/&=:\"'_.-]+)" .
- // "[:space:]*" .
- // "((\[/image\])|(.*\[/image\]))",
- // "<img src=\"\\3\" alt=\"\\2\" />",
- // $text);
-
- $text = preg_replace("/\[image(\|)?([a-zA-Z0-9\s]*)\]".
- "[\s]*".
- "([a-zA-Z0-9\#\?\/\&\=\:\\\"\'\_\.\-]+)[\s]*".
- "((\[\/image\])|(.*\[\/image\]))/i",
- "<img src=\"\\3\" alt=\"\\2\" />",
- $text);
-
- return $text;
- }
-
- private static function formatFinalOutput($text, $nl2br = true) {
- global $_base_path;
-
- $text = str_replace('CONTENT_DIR/', '', $text);
- if ($nl2br) {
- return nl2br(ContentUtility::imageReplace(ContentUtility::makeClickable(ContentUtility::myCodes(' '.$text, false))));
- }
-
- return ContentUtility::imageReplace(ContentUtility::makeClickable(ContentUtility::myCodes(' '.$text, true)));
- }
-
- /**
- * This function converts the input string into AContent html content string
- * @access public
- * @param $input: input string
- * $html: whether the input is in html
- * @return converted AContent html content string
- * @author Cindy Qi Li
- */
- public static function formatContent($input, $html = 0) {
- global $_base_path, $_config;
-
- if (!$html) {
- $input = str_replace('<', '<', $input);
- $input = str_replace('<?php', '<?php', $input); // for bug #2087
- } elseif ($html==2) {
- $output = '<iframe width="100%" frameborder="0" id="content_frame" marginheight="0" marginwidth="0" src="'.$input.'"></iframe>';
- $output .= '<script type="text/javascript">
- function resizeIframe() {
- var height = document.documentElement.clientHeight;
-
- // not sure how to get this dynamically
- height -= 20; /* whatever you set your body bottom margin/padding to be */
-
- document.getElementById(\'content_frame\').style.height = height +"px";
-
- };
- document.getElementById(\'content_frame\').onload = resizeIframe;
- window.onresize = resizeIframe;
- </script>';
- return $output;
- }
-
- /* Commented by Cindy Qi Li on Jan 12, 2010
- * AContent does not support glossary
- // do the glossary search and replace:
- if (is_array($glossary)) {
- foreach ($glossary as $k => $v) {
- $k = urldecode($k);
- $v = str_replace("\n", '<br />', $v);
- $v = str_replace("\r", '', $v);
-
- // escape special characters
- $k = preg_quote($k);
-
- $k = str_replace('<', '<', $k);
- $k = str_replace('/', '\/', $k);
-
- $original_term = $k;
- $term = $original_term;
-
- $term = '(\s*'.$term.'\s*)';
- $term = str_replace(' ','((<br \/>)*\s*)', $term);
-
- $def = htmlspecialchars($v, ENT_QUOTES, 'UTF-8');
- if ($simple) {
- $input = preg_replace
- ("/(\[\?\])$term(\[\/\?\])/i",
- '<a href="'.$simple.'glossary.html#'.urlencode($original_term).'" target="body" class="at-term">\\2</a>',
- $input);
- } else {
- $input = preg_replace
- ("/(\[\?\])$term(\[\/\?\])/i",
- '\\2<sup><a class="tooltip" href="'.$_base_path.'mods/_core/glossary/index.php?g_cid='.$_SESSION['s_cid'].htmlentities(SEP).'w='.urlencode($original_term).'#term" title="'.addslashes($original_term).': '.$def.'">?</a></sup>',$input);
- }
- }
- } else if (!$user_glossary) {
- $input = str_replace(array('[?]','[/?]'), '', $input);
- }
- */
-
-
- $input = str_replace('CONTENT_DIR', '', $input);
-
- if (isset($_config['latex_server']) && $_config['latex_server']) {
- // see: http://www.forkosh.com/mimetex.html
- $input = preg_replace('/\[tex\](.*?)\[\/tex\]/sie', "'<img src=\"'.\$_config['latex_server'].rawurlencode('$1').'\" align=\"middle\">'", $input);
- }
-
- if ($html) {
- $x = ContentUtility::formatFinalOutput($input, false);
- return $x;
- }
-
- // the following has been taken out for this:
- // http://atutor.ca/atutor/mantis/view.php?id=4593
- // @date Oct 18, 2010
- // $output = ContentUtility::formatFinalOutput($input);
- $output = $input;
- $output = '<p>'.$input.'</p>';
-
- return $output;
- }
-
- /**
- * This function returns html string of "table of content"
- * @access: public
- * @param: $content: a string
- * @return: a html string of "table of content"
- */
- public static function getContentTable($content)
- {
- preg_match_all("/<(h[\d]+)[^>]*>(.*)<\/(\s*)\\1(\s*)>/i", $content, $found_headers, PREG_SET_ORDER);
-
- if (count($found_headers) == 0) return array("", $content);
- else
- {
- $num_of_headers = 0;
-
- for ($i = 0; $i < count($found_headers); $i++)
- {
- $div_id = "_header_" . $num_of_headers++;
-
- if ($i == 0)
- {
- $content_table = "<div id=\"toc\">\n<fieldset id=\"toc\"><legend>". _AT("table_of_contents")."</legend>\n";
- }
-
- $content = str_replace($found_headers[$i][0], '<div id="'.$div_id.'">'.$found_headers[$i][0].'</div>', $content);
- $content_table .= '<a href="'.$_SERVER["REQUEST_URI"].'#'.$div_id.'" class="'.$found_headers[$i][1].'">'. $found_headers[$i][2]."</a>\n";
-
- if ($i == count($found_headers) - 1)
- {
- $content_table .= "</fieldset></div><br />";
- }
- }
- return array($content_table, $content);
- }
- }
-
- /**
- * This function returns an array of content tools' shortcuts
- * @access: public
- * @param: $content_row: an array of the current content information
- * @return: an array of all the tool short cuts that apply to the current content or content folder
- */
- public static function getToolShortcuts($content_row)
- {
- global $_current_user, $_base_href, $contentManager, $_course_id;
-
- if (((!$content_row['content_parent_id'] && ($_SESSION['packaging'] == 'top'))
- || ($_SESSION['packaging'] == 'all'))
- || (isset($_current_user) && ($_current_user->isAuthor($_course_id)|| $_current_user->isAdmin()))) {
-
- $tool_shortcuts[] = array(
- 'title' => _AT('export_content_in_cp'),
- 'url' => $_base_href . 'home/ims/ims_export.php?_cid='.$content_row['content_id'],
- 'icon' => $_base_href . 'themes/'.$_SESSION['prefs']['PREF_THEME'].'/images/export.png');
- $tool_shortcuts[] = array(
- 'title' => _AT('export_content_in_cc'),
- 'url' => $_base_href . 'home/imscc/ims_export.php?_cid='.$content_row['content_id'].SEP.'to_a4a=1',
- 'icon' => $_base_href . 'themes/'.$_SESSION['prefs']['PREF_THEME'].'/images/export_cc.png');
- }
-
- if (isset($_current_user) && ($_current_user->isAuthor($_course_id) || $_current_user->isAdmin())) {
- if ($content_row['content_type'] == CONTENT_TYPE_CONTENT || $content_row['content_type'] == CONTENT_TYPE_WEBLINK) {
- $tool_shortcuts[] = array(
- 'title' => _AT('edit_this_page'),
- 'url' => $_base_href . 'home/editor/edit_content.php?_cid='.$content_row['content_id'],
- 'icon' => $_base_href . 'images/medit.gif');
- }
- global $_config;
- if($_config['enable_template_structure'] == '1'){
- $tool_shortcuts[] = array(
- 'title' => _AT('add_top_structure'),
- 'url' => $_base_href .
- 'home/editor/edit_content_struct.php?_course_id='.$_course_id,
- 'icon' => $_base_href . 'images/addstruct.gif');
- }
- $tool_shortcuts[] = array(
- 'title' => _AT('add_sibling_folder'),
- 'url' => $_base_href .
- 'home/editor/edit_content_folder.php?pid='.$contentManager->_menu_info[$content_row['content_id']]['content_parent_id'].SEP.'_course_id='.$_course_id,
- 'icon' => $_base_href . 'images/add_sibling_folder.gif');
-
- if ($content_row['content_type'] == CONTENT_TYPE_FOLDER || $content_row['content_type'] == CONTENT_TYPE_WEBLINK) {
- $tool_shortcuts[] = array(
- 'title' => _AT('add_sub_folder'),
- 'url' => $_base_href .
- 'home/editor/edit_content_folder.php?_course_id='.$_course_id.SEP.'pid='.$content_row['content_id'],
- 'icon' => $_base_href . 'images/add_sub_folder.gif');
- }
-
- $tool_shortcuts[] = array(
- 'title' => _AT('add_sibling_page'),
- 'url' => $_base_href .
- 'home/editor/edit_content.php?pid='.$contentManager->_menu_info[$content_row['content_id']]['content_parent_id'].SEP.'_course_id='.$_course_id,
- 'icon' => $_base_href . 'images/add_sibling_page.gif');
-
- if ($content_row['content_type'] == CONTENT_TYPE_CONTENT || $content_row['content_type'] == CONTENT_TYPE_WEBLINK) {
- $tool_shortcuts[] = array(
- 'title' => _AT('delete_this_page'),
- 'url' => $_base_href . 'home/editor/delete_content.php?_cid='.$content_row['content_id'],
- 'icon' => $_base_href . 'images/page_delete.gif');
- }
- else if ($content_row['content_type'] == CONTENT_TYPE_FOLDER) {
- $tool_shortcuts[] = array(
- 'title' => _AT('add_sub_page'),
- 'url' => $_base_href . 'home/editor/edit_content.php?_course_id='.$_course_id.SEP.'pid='.$content_row['content_id'],
- 'icon' => $_base_href . 'images/add_sub_page.gif');
-
- $tool_shortcuts[] = array(
- 'title' => _AT('delete_this_folder'),
- 'url' => $_base_href . 'home/editor/delete_content.php?_cid='.$content_row['content_id'],
- 'icon' => $_base_href . 'images/page_delete.gif');
- }
- }
- return $tool_shortcuts;
-
- // if (isset($_current_user) && $_current_user->isAuthor($_course_id)) {
- // $shortcuts[] = array('title' => _AT('add_sub_folder'), 'url' => $_base_href . 'home/editor/edit_content_folder.php?_course_id='.$_course_id.'pid='.$cid);
- //
- //// $shortcuts[] = array('title' => _AT('add_top_page'), 'url' => $_base_href . 'home/editor/edit_content.php?_course_id='.$_course_id, 'icon' => $_base_href . 'images/page_add.gif');
- // if ($contentManager->_menu_info[$cid]['content_parent_id']) {
- // $shortcuts[] = array('title' => _AT('add_sibling_page'), 'url' => $_base_href .
- // 'home/editor/edit_content.php?_course_id='.$_course_id.SEP.'pid='.$contentManager->_menu_info[$cid]['content_parent_id'], 'icon' => $_base_href . 'images/page_add_sibling.gif');
- // }
- //
- // $shortcuts[] = array('title' => _AT('add_sub_page'), 'url' => $_base_href . 'home/editor/edit_content.php?_course_id='.$_course_id.SEP.'pid='.$cid);
- // $shortcuts[] = array('title' => _AT('delete_this_folder'), 'url' => $_base_href . 'home/editor/delete_content.php?_cid='.$cid, 'icon' => $_base_href . 'images/page_delete.gif');
- // }
- }
-
- /**
- * replace source object with alternatives according to user's preferences
- * @access public
- * @param $cid: content id.
- * @param $content: the original content page ($content_row['text'], from content.php).
- * @param $info_only: when "true", return the array of info (has_text_alternative, has_audio_alternative, has_visual_alternative, has_sign_lang_alternative)
- * @param $only_on_secondary_type:
- * @return string $content: the content page with the appropriated resources.
- * @see $db from include/vitals.inc.php
- * @author Cindy Qi Li
- */
- public static function applyAlternatives($cid, $content, $info_only = false, $only_on_secondary_type = 0){
- global $db, $_course_id;
-
- include_once(TR_INCLUDE_PATH.'classes/DAO/DAO.class.php');
- $dao = new DAO();
-
- $video_exts = array("mpg", "avi", "wmv", "mov", "swf", "mp4", "flv");
-
- $audio_exts = array("mp3", "wav", "ogg", "mid");
- $audio_width = 425;
- $audio_height = 27;
-
- $txt_exts = array("txt", "html", "htm");
- $image_exts = array("gif", "bmp", "png", "jpg", "jpeg", "png", "tif");
- $only_on_secondary_type = intval($only_on_secondary_type);
-
- // intialize the 4 returned values when $info_only is on
- if ($info_only)
- {
- $has_text_alternative = false;
- $has_audio_alternative = false;
- $has_visual_alternative = false;
- $has_sign_lang_alternative = false;
- }
-
- if (!$info_only && !$only_on_secondary_type &&
- ($_SESSION['prefs']['PREF_USE_ALTERNATIVE_TO_TEXT']==0) &&
- ($_SESSION['prefs']['PREF_USE_ALTERNATIVE_TO_AUDIO']==0) &&
- ($_SESSION['prefs']['PREF_USE_ALTERNATIVE_TO_VISUAL']==0))
- {
- //No user's preferences related to content format are declared
- if (!$info_only) {
- return $content;
- } else {
- return array($has_text_alternative, $has_audio_alternative, $has_visual_alternative, $has_sign_lang_alternative);
- }
- }
-
- // get all relations between primary resources and their alternatives
- $sql = "SELECT DISTINCT c.content_path, pr.resource, prt.type_id primary_type,
- sr.secondary_resource, srt.type_id secondary_type
- FROM ".TABLE_PREFIX."primary_resources pr, ".
- TABLE_PREFIX."primary_resources_types prt,".
- TABLE_PREFIX."secondary_resources sr,".
- TABLE_PREFIX."secondary_resources_types srt,".
- TABLE_PREFIX."content c
- WHERE pr.content_id=".$cid."
- AND pr.primary_resource_id = prt.primary_resource_id
- AND pr.primary_resource_id = sr.primary_resource_id
- AND sr.language_code='".$_SESSION['lang']."'
- AND sr.secondary_resource_id = srt.secondary_resource_id
- AND pr.content_id = c.content_id";
- if ($only_on_secondary_type > 0) {
- $sql .= " AND srt.type_id=".$only_on_secondary_type;
- }
- $sql .= " ORDER BY pr.primary_resource_id, prt.type_id";
-
- $rows = $dao->execute($sql);
-
- if (!is_array($rows)) {
- if (!$info_only) {
- return $content;
- } else {
- return array($has_text_alternative, $has_audio_alternative, $has_visual_alternative, $has_sign_lang_alternative);
- }
- }
-
- $primary_resource_names = array();
- foreach ($rows as $row) {
- // if the primary resource is defined with multiple resource type,
- // the primary resource would be replaced/appended multiple times.
- // This is what we want at applying alternatives by default, but
- // not when only one secondary type is chosen to apply.
- // This fix is to remove the duplicates on the same primary resource.
- // A dilemma of this fix is, for example, if the primary resource type
- // is "text" and "visual", but
- // $_SESSION['prefs']['PREF_ALT_TO_TEXT_APPEND_OR_REPLACE'] == 'replace'
- // $_SESSION['prefs']['PREF_ALT_TO_VISUAL_APPEND_OR_REPLACE'] == 'append'
- // so, should replace happen or append happen? With this fix, whichever
- // the first in the sql return gets preserved in the array and processed.
- // The further improvement is requried to keep rows based on the selected
- // secondary type (http://www.atutor.ca/atutor/mantis/view.php?id=4598).
- if ($only_on_secondary_type > 0) {
- if (in_array($row['resource'], $primary_resource_names)) {
- continue;
- } else {
- $primary_resource_names[] = $row['resource'];
- }
- }
- $alternative_rows[] = $row;
-
- $youtube_playURL = ContentUtility::convertYoutubeWatchURLToPlayURL($row['resource']);
-
- if ($row['resource'] <> $youtube_playURL) {
- $row['resource'] = $youtube_playURL;
- $alternative_rows[] = $row;
- }
- }
-
- foreach ($alternative_rows as $row)
- {
- if ($info_only || $only_on_secondary_type ||
- ($_SESSION['prefs']['PREF_USE_ALTERNATIVE_TO_TEXT']==1 && $row['primary_type']==3 &&
- ($_SESSION['prefs']['PREF_ALT_TO_TEXT']=="audio" && $row['secondary_type']==1 ||
- $_SESSION['prefs']['PREF_ALT_TO_TEXT']=="visual" && $row['secondary_type']==4 ||
- $_SESSION['prefs']['PREF_ALT_TO_TEXT']=="sign_lang" && $row['secondary_type']==2)) ||
-
- ($_SESSION['prefs']['PREF_USE_ALTERNATIVE_TO_AUDIO']==1 && $row['primary_type']==1 &&
- ($_SESSION['prefs']['PREF_ALT_TO_AUDIO']=="visual" && $row['secondary_type']==4 ||
- $_SESSION['prefs']['PREF_ALT_TO_AUDIO']=="text" && $row['secondary_type']==3 ||
- $_SESSION['prefs']['PREF_ALT_TO_AUDIO']=="sign_lang" && $row['secondary_type']==2)) ||
-
- ($_SESSION['prefs']['PREF_USE_ALTERNATIVE_TO_VISUAL']==1 && $row['primary_type']==4 &&
- ($_SESSION['prefs']['PREF_ALT_TO_VISUAL']=="audio" && $row['secondary_type']==1 ||
- $_SESSION['prefs']['PREF_ALT_TO_VISUAL']=="text" && $row['secondary_type']==3 ||
- $_SESSION['prefs']['PREF_ALT_TO_VISUAL']=="sign_lang" && $row['secondary_type']==2))
- )
- {
- $ext = substr($row['secondary_resource'], strrpos($row['secondary_resource'], '.')+1);
-
- // alternative is video
- if (in_array($ext, $video_exts)|| in_array($ext, $audio_exts) ||
- preg_match("/http:\/\/.*youtube.com\/watch.*/", $row['secondary_resource'])) {
- if (in_array($ext, $audio_exts)) {
- // display audio medias in a smaller width/height (425 * 27)
- // A hack for now to handle audio media player size
- $target = '[media|'.$audio_width.'|'.$audio_height.']'.$row['secondary_resource'].'[/media]';
- } else {
- // use default media size for video medias
- $target = '[media]'.$row['secondary_resource'].'[/media]';
- }
- }
- // a text primary to be replaced by a visual alternative
- else if (in_array($ext, $txt_exts))
- {
- if ($row['content_path'] <> '')
- $file_location = $row['content_path'].'/'.$row['secondary_resource'];
- else
- $file_location = $row['secondary_resource'];
-
- $file = TR_CONTENT_DIR.$_SESSION['course_id'] . '/'.$file_location;
- $target = '<br />'.file_get_contents($file);
-
- // check whether html file
- if (preg_match('/.*\<html.*\<\/html\>.*/s', $target))
- { // is a html file, use iframe to display
- // get real path to the text file
- if (defined('TR_FORCE_GET_FILE') && TR_FORCE_GET_FILE) {
- $course_base_href = 'get.php/';
- } else {
- $course_base_href = 'content/' . $_SESSION['course_id'] . '/';
- }
-
- $file = TR_BASE_HREF . $course_base_href.$file_location;
-
- $target = '<iframe width="100%" frameborder="0" class="autoHeight" scrolling="auto" src="'.$file.'"></iframe>';
- }
- else
- { // is a text file, insert/replace into content
- $target = nl2br($target);
- }
- }
- else if (in_array($ext, $image_exts))
- $target = '<img border="0" alt="'._AT('alternate_text').'" src="'.$row['secondary_resource'].'"/>';
- // otherwise
- else
- $target = '<p><a href="'.$row['secondary_resource'].'">'.$row['secondary_resource'].'</a></p>';
-
- // replace or append the target alternative to the source
- if (($row['primary_type']==3 && $_SESSION['prefs']['PREF_ALT_TO_TEXT_APPEND_OR_REPLACE'] == 'replace') ||
- ($row['primary_type']==1 && $_SESSION['prefs']['PREF_ALT_TO_AUDIO_APPEND_OR_REPLACE']=='replace') ||
- ($row['primary_type']==4 && $_SESSION['prefs']['PREF_ALT_TO_VISUAL_APPEND_OR_REPLACE']=='replace'))
- $pattern_replace_to = '${1}'."\n".$target."\n".'${3}';
- else
- $pattern_replace_to = '${1}${2}'."<br /><br />\n".$target."\n".'${3}';
-
- // *** Alternative replace/append starts from here ***
- $processed = false; // one primary resource is only processed once
-
- // append/replace target alternative to [media]source[/media]
- if (!$processed && preg_match("/".preg_quote("[media").".*".preg_quote("]".$row['resource']."[/media]", "/")."/sU", $content))
- {
- $processed = true;
- if (!$info_only) {
- $content = preg_replace("/(.*)(".preg_quote("[media").".*".preg_quote("]".$row['resource']."[/media]", "/").")(.*)/sU",
- $pattern_replace_to, $content);
- } else {
- if ($row['secondary_type'] == 1) $has_audio_alternative = true;
- if ($row['secondary_type'] == 2) $has_sign_lang_alternative = true;
- if ($row['secondary_type'] == 3) $has_text_alternative = true;
- if ($row['secondary_type'] == 4) $has_visual_alternative = true;
- }
- }
-
- // append/replace target alternative to <img ... src="source" ...></a>
- if (!$processed && preg_match("/\<img.*src=\"".preg_quote($row['resource'], "/")."\".*\/\>/sU", $content))
- {
- $processed = true;
- if (!$info_only) {
- $content = preg_replace("/(.*)(\<img.*src=\"".preg_quote($row['resource'], "/")."\".*\/\>)(.*)/sU",
- $pattern_replace_to, $content);
- } else {
- if ($row['secondary_type'] == 1) $has_audio_alternative = true;
- if ($row['secondary_type'] == 2) $has_sign_lang_alternative = true;
- if ($row['secondary_type'] == 3) $has_text_alternative = true;
- if ($row['secondary_type'] == 4) $has_visual_alternative = true;
- }
- }
-
- // append/replace target alternative to <object ... source ...></object>
- if (!$processed && preg_match("/\<object.*".preg_quote($row['resource'], "/").".*\<\/object\>/sU", $content))
- {
- $processed = true;
- if (!$info_only) {
- $content = preg_replace("/(.*)(\<object.*".preg_quote($row['resource'], "/").".*\<\/object\>)(.*)/sU",
- $pattern_replace_to, $content);
- } else {
- if ($row['secondary_type'] == 1) $has_audio_alternative = true;
- if ($row['secondary_type'] == 2) $has_sign_lang_alternative = true;
- if ($row['secondary_type'] == 3) $has_text_alternative = true;
- if ($row['secondary_type'] == 4) $has_visual_alternative = true;
- }
- }
-
- // append/replace target alternative to <a>...source...</a> or <a ...source...>...</a>
- // skip this "if" when the source object has been processed in aboved <img> tag
- if (!$processed && preg_match("/\<a.*".preg_quote($row['resource'], "/").".*\<\/a\>/sU", $content))
- {
- $processed = true;
- if (!$info_only) {
- $content = preg_replace("/(.*)(\<a.*".preg_quote($row['resource'], "/").".*\<\/a\>)(.*)/sU",
- $pattern_replace_to, $content);
- } else {
- if ($row['secondary_type'] == 1) $has_audio_alternative = true;
- if ($row['secondary_type'] == 2) $has_sign_lang_alternative = true;
- if ($row['secondary_type'] == 3) $has_text_alternative = true;
- if ($row['secondary_type'] == 4) $has_visual_alternative = true;
- }
- }
-
- // append/replace target alternative to <embed ... source ...>
- if (!$processed && preg_match("/\<embed.*".preg_quote($row['resource'], "/").".*\>/sU", $content))
- {
- $processed = true;
- if (!$info_only) {
- $content = preg_replace("/(.*)(\<embed.*".preg_quote($row['resource'], "/").".*\>)(.*)/sU",
- $pattern_replace_to, $content);
- } else {
- if ($row['secondary_type'] == 1) $has_audio_alternative = true;
- if ($row['secondary_type'] == 2) $has_sign_lang_alternative = true;
- if ($row['secondary_type'] == 3) $has_text_alternative = true;
- if ($row['secondary_type'] == 4) $has_visual_alternative = true;
- }
- }
- }
- }
-
- if (!$info_only) {
- return $content;
- } else {
- return array($has_text_alternative, $has_audio_alternative, $has_visual_alternative, $has_sign_lang_alternative);
- }
- }
-
- /**
- * This function save the last content_id accessed by current user on a course into db and set $_SESSION['s_cid']
- * @access: public
- * @param: $content_id
- * @return: save $content_id, the last visited one of the current user, into db and session
- */
- public static function saveLastCid($content_id)
- {
- global $_course_id;
-
- if (!$content_id || !isset($_SESSION['user_id'])) return;
-
- include_once(TR_INCLUDE_PATH.'classes/DAO/UserCoursesDAO.class.php');
-
- $userCoursesDAO = new UserCoursesDAO();
- if ($userCoursesDAO->isExist($_SESSION['user_id'], $_course_id))
- {
- $userCoursesDAO->UpdateLastCid($_SESSION['user_id'], $_course_id, $content_id);
- $_SESSION['s_cid'] = $content_id;
- }
- }
- }
- ?>