tag linking
* to that URL
* - Goes through the given string, and replaces www.xxxx.yyyy[zzzz] with an HTML tag linking
* to http://www.xxxx.yyyy[/zzzz]
* - Goes through the given string, and replaces xxxx@yyyy with an HTML mailto: tag linking
* to that email address
* - Only matches these 2 patterns either after a space, or at the beginning of a line
*
* Notes: the email one might get annoying - it's easy to make it more restrictive, though.. maybe
* have it require something like xxxx@yyyy.zzzz or such. We'll see.
*/
function make_clickable($string)
{
if(!stristr($string,' src=') && !stristr($string,' href='))
{
$string=eregi_replace("(https?|ftp)://([a-z0-9#?/&=._+:~%-]+)","\\1://\\2",$string);
$string=eregi_replace("([a-z0-9_.-]+@[a-z0-9.-]+)","\\1",$string);
}
return $string;
}
/**
* formats the date according to the locale settings
*
* @author Patrick Cool , Ghent University
* @author Christophe Gesché
* originally inspired from from PhpMyAdmin
* @param string $formatOfDate date pattern
* @param integer $timestamp, default is NOW.
* @return the formatted date
*/
function format_locale_date( $dateFormat, $timeStamp = -1)
{
// Defining the shorts for the days
$DaysShort = array (get_lang("SundayShort"), get_lang("MondayShort"), get_lang("TuesdayShort"), get_lang("WednesdayShort"), get_lang("ThursdayShort"), get_lang("FridayShort"), get_lang("SaturdayShort"));
// Defining the days of the week to allow translation of the days
$DaysLong = array (get_lang("SundayLong"), get_lang("MondayLong"), get_lang("TuesdayLong"), get_lang("WednesdayLong"), get_lang("ThursdayLong"), get_lang("FridayLong"), get_lang("SaturdayLong"));
// Defining the shorts for the months
$MonthsShort = array (get_lang("JanuaryShort"), get_lang("FebruaryShort"), get_lang("MarchShort"), get_lang("AprilShort"), get_lang("MayShort"), get_lang("JuneShort"), get_lang("JulyShort"), get_lang("AugustShort"), get_lang("SeptemberShort"), get_lang("OctoberShort"), get_lang("NovemberShort"), get_lang("DecemberShort"));
// Defining the months of the year to allow translation of the months
$MonthsLong = array (get_lang("JanuaryLong"), get_lang("FebruaryLong"), get_lang("MarchLong"), get_lang("AprilLong"), get_lang("MayLong"), get_lang("JuneLong"), get_lang("JulyLong"), get_lang("AugustLong"), get_lang("SeptemberLong"), get_lang("OctoberLong"), get_lang("NovemberLong"), get_lang("DecemberLong"));
if ($timeStamp == -1) $timeStamp = time();
// with the ereg we replace %aAbB of date format
//(they can be done by the system when locale date aren't aivailable
$date = ereg_replace('%[A]', $DaysLong[(int)strftime('%w', $timeStamp)], $dateFormat);
$date = ereg_replace('%[a]', $DaysShort[(int)strftime('%w', $timeStamp)], $date);
$date = ereg_replace('%[B]', $MonthsLong[(int)strftime('%m', $timeStamp)-1], $date);
$date = ereg_replace('%[b]', $MonthsShort[(int)strftime('%m', $timeStamp)-1], $date);
return strftime($date, $timeStamp);
} // end function format_locale_date
/**
* @desc this function does some parsing on the text that gets inputted. This parsing can be of any kind
* LaTeX notation, Word Censoring, Glossary Terminology (extension will available soon), Musical Notations, ...
* The inspiration for this filter function came from Moodle an phpBB who both use a similar approach
* @param $input string. some text
* @return $output string. some text that contains the parsed elements.
* @example [tex]\sqrt(2)[/tex]
* @author Patrick Cool
* @version March 2OO6
*/
function text_filter($input, $filter=true)
{
//$input=stripslashes($input);
if ($filter==true)
{
// *** parse [tex]...[/tex] tags *** //
// which will return techexplorer or image html depending on the capabilities of the
// browser of the user (using some javascript that checks if the browser has the TechExplorer plugin installed or not)
$input=_text_parse_tex($input);
// *** parse [teximage]...[/teximage] tags *** //
// these force the gif rendering of LaTeX using the mimetex gif renderer
//$input=_text_parse_tex_image($input);
// *** parse [texexplorer]...[/texexplorer] tags *** //
// these force the texeplorer LaTeX notation
$input=_text_parse_texexplorer($input);
// *** Censor Words *** //
// censor words. This function removes certain words by [censored]
// this can be usefull when the campus is open to the world.
// $input=text_censor_words($input);
// *** parse [?]...[/?] tags *** //
// for the glossary tool (see http://www.dokeos.com/extensions)
$input=_text_parse_glossary($input);
// parse [wiki]...[/wiki] tags
// this is for the coolwiki plugin.
// $input=text_parse_wiki($input);
// parse [tool]...[/tool] tags
// this parse function adds a link to a certain tool
// $input=text_parse_tool($input);
// parse [user]...[/user] tags
// parse [email]...[/email] tags
// parse [code]...[/code] tags
}
return $input;
}
/**
* Apply parsing to content to parse tex commandos that are seperated by [tex]
* [/tex] to make it readable for techexplorer plugin.
* This function should not be accessed directly but should be accesse through the text_filter function
* @param string $text The text to parse
* @return string The text after parsing.
* @author Patrick Cool
* @version June 2004
*/
function _text_parse_tex($textext)
{
//$textext = str_replace(array ("[tex]", "[/tex]"), array ('[*****]', '[/*****]'), $textext);
//$textext=stripslashes($texttext);
$input_array=preg_split("/(\[tex]|\[\/tex])/",$textext,-1, PREG_SPLIT_DELIM_CAPTURE);
foreach ($input_array as $key=>$value)
{
if ($input_array[$key-1]=='[tex]' AND $input_array[$key+1]=='[/tex]')
{
$input_array[$key]=latex_gif_renderer($value);
unset($input_array[$key-1]);
unset($input_array[$key+1]);
//echo 'LaTeX: