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@ -622,138 +622,6 @@ function _split_str_by_whitespace( $string, $goal ) { |
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return $chunks; |
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} |
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/** |
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* @desc This function does some parsing on the text that gets inputted. This parsing can be of any kind |
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* LaTeX notation, Word Censoring, Glossary Terminology (extension will available soon), Musical Notations, ... |
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* The inspiration for this filter function came from Moodle an phpBB who both use a similar approach. |
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* <code>[tex]\sqrt(2)[/tex]</code> |
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* @param $input string. some text |
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* @return $output string. some text that contains the parsed elements. |
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* @author Patrick Cool <patrick.cool@UGent.be> |
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* @version March 2OO6 |
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*/ |
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function text_filter($input, $filter = true) { |
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//$input = stripslashes($input); |
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if ($filter) { |
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// *** parse [tex]...[/tex] tags *** // |
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// which will return techexplorer or image html depending on the capabilities of the |
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// browser of the user (using some javascript that checks if the browser has the TechExplorer plugin installed or not) |
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//$input = _text_parse_tex($input); |
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// *** parse [teximage]...[/teximage] tags *** // |
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// these force the gif rendering of LaTeX using the mimetex gif renderer |
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//$input=_text_parse_tex_image($input); |
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// *** parse [texexplorer]...[/texexplorer] tags *** // |
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// these force the texeplorer LaTeX notation |
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//$input = _text_parse_texexplorer($input); |
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// *** Censor Words *** // |
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// censor words. This function removes certain words by [censored] |
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// this can be usefull when the campus is open to the world. |
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// $input=text_censor_words($input); |
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// *** parse [?]...[/?] tags *** // |
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// for the glossary tool |
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//$input = _text_parse_glossary($input); |
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// parse [wiki]...[/wiki] tags |
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// this is for the coolwiki plugin. |
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// $input=text_parse_wiki($input); |
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// parse [tool]...[/tool] tags |
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// this parse function adds a link to a certain tool |
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// $input=text_parse_tool($input); |
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// parse [user]...[/user] tags |
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// parse [email]...[/email] tags |
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// parse [code]...[/code] tags |
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} |
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return $input; |
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} |
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/** |
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* Applies parsing for tex commands that are separated by [tex] |
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* [/tex] to make it readable for techexplorer plugin. |
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* This function should not be accessed directly but should be accesse through the text_filter function |
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* @param string $text The text to parse |
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* @return string The text after parsing. |
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* @author Patrick Cool <patrick.cool@UGent.be> |
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* @version June 2004 |
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*/ |
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function _text_parse_tex($textext) { |
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//$textext = str_replace(array ("[tex]", "[/tex]"), array ('[*****]', '[/*****]'), $textext); |
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//$textext = stripslashes($texttext); |
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$input_array = preg_split("/(\[tex]|\[\/tex])/", $textext, -1, PREG_SPLIT_DELIM_CAPTURE); |
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foreach ($input_array as $key => $value) { |
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if ($key > 0 && $input_array[$key - 1] == '[tex]' AND $input_array[$key + 1] == '[/tex]') { |
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$input_array[$key] = latex_gif_renderer($value); |
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unset($input_array[$key - 1]); |
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unset($input_array[$key + 1]); |
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//echo 'LaTeX: <embed type="application/x-techexplorer" texdata="'.stripslashes($value).'" autosize="true" pluginspage="http://www.integretechpub.com/techexplorer/"><br />'; |
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} |
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} |
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$output = implode('',$input_array); |
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return $output; |
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} |
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/** |
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* This function should not be accessed directly but should be accesse through the text_filter function |
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* @author Patrick Cool <patrick.cool@UGent.be> |
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*/ |
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function _text_parse_glossary($input) { |
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return $input; |
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} |
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/** |
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* @desc This function makes a valid link to a different tool. |
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* This function should not be accessed directly but should be accesse through the text_filter function |
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* @author Patrick Cool <patrick.cool@UGent.be> |
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*/ |
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function _text_parse_tool($input) { |
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// An array with all the valid tools |
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$tools[] = array(TOOL_ANNOUNCEMENT, 'announcements/announcements.php'); |
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$tools[] = array(TOOL_CALENDAR_EVENT, 'calendar/agenda.php'); |
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// Check if the name between the [tool] [/tool] tags is a valid one |
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} |
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/** |
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* Renders LaTeX code into a gif or retrieve a cached version of the gif. |
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* @author Patrick Cool <patrick.cool@UGent.be> Ghent University |
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*/ |
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function latex_gif_renderer($latex_code) { |
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$_course = api_get_course_info(); |
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// Setting the paths and filenames |
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$mimetex_path = api_get_path(LIBRARY_PATH).'mimetex/'; |
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$temp_path = api_get_path(SYS_COURSE_PATH).$_course['path'].'/temp/'; |
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$latex_filename = md5($latex_code).'.gif'; |
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if (!file_exists($temp_path.$latex_filename) OR isset($_GET['render'])) { |
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if (IS_WINDOWS_OS) { |
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$mimetex_command = $mimetex_path.'mimetex.exe -e "'.$temp_path.md5($latex_code).'.gif" '.escapeshellarg($latex_code).''; |
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} else { |
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$mimetex_command = $mimetex_path.'mimetex.cgi -e "'.$temp_path.md5($latex_code).'.gif" '.escapeshellarg($latex_code); |
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} |
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exec($mimetex_command); |
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//echo 'volgende shell commando werd uitgevoerd:<br /><pre>'.$mimetex_command.'</pre><hr>'; |
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} |
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$return = "<a href=\"\" onclick=\"javascript: newWindow=window.open('".api_get_path(WEB_CODE_PATH)."inc/latex.php?code=".urlencode($latex_code)."&filename=$latex_filename','latexCode','toolbar=no,location=no,scrollbars=yes,resizable=yes,status=yes,width=375,height=250,left=200,top=100');\">"; |
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$return .= '<img src="'.api_get_path(WEB_COURSE_PATH).$_course['path'].'/temp/'.$latex_filename.'" alt="'.$latex_code.'" border="0" /></a>'; |
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return $return; |
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} |
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/** |
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* This functions cuts a paragraph |
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* i.e cut('Merry Xmas from Lima',13) = "Merry Xmas fr..." |
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Julio Montoya
9 years ago