Licensed under the GNU GPL version 2 or any later. See file COPYRIGHT for details.
*/
require_once(MTTINC. 'markup.parsedown.php');
//require_once(MTTINC. 'markup.commonmark.php');
interface MTTMarkdownInterface
{
public function convert(string $s, bool $toExternal = false);
}
final class MTTMarkdown
{
/** @var MTTMarkdownInterface */
private static $instance;
/**
*
* @return MTTMarkdownInterface
*/
public static function instance() : MTTMarkdownInterface
{
if (!isset(self::$instance)) {
self::$instance = new MTTParsedownWrapper();
//self::$instance = new MTTCommonmarkWrapper();
}
return self::$instance;
}
}
function noteMarkup($note, $toExternal = false)
{
if ($note === null) {
$note = '';
}
if (Config::get('markup') == 'v1') {
return mttMarkup_v1($note);
}
return markdownToHtml($note, $toExternal);
}
function markdownToHtml($s, $toExternal = false)
{
return MTTMarkdown::instance()->convert($s, $toExternal);
}
// Convert note's raw text to html with allowed elements (b,i,u,s and raw urls)
function mttMarkup_v1($s)
{
//hide allowed elements from escaping
$c1 = chr(1);
$c2 = chr(2);
$s = preg_replace("~([\s\S]*?)~i", "{$c1}b{$c2}\$1{$c1}/b{$c2}", $s);
$s = preg_replace("~([\s\S]*?)~i", "{$c1}i{$c2}\$1{$c1}/i{$c2}", $s);
$s = preg_replace("~([\s\S]*?)~i", "{$c1}u{$c2}\$1{$c1}/u{$c2}", $s);
$s = preg_replace("~([\s\S]*?)~i", "{$c1}s{$c2}\$1{$c1}/s{$c2}", $s);
$s = htmlspecialchars($s, ENT_QUOTES); //escape all elements, except above
$s = str_replace( [$c1, $c2], ['<','>'], $s ); //unhide
$s = nl2br($s);
// make links from text starting with 'www.'
$s = preg_replace(
"/(^|\s|>)(www\.([\w\#$%&~\/.\-\+;:=,\?\[\]@]+?))(,|\.|:|)?(?=\s|"|<|>|\"|<|>|$)/iu" ,
'$1$2$4' ,
$s
);
// make link from text starting with protocol like 'http://'
$s = preg_replace(
"/(^|\s|>)([a-z]+:\/\/([\w\#$%&~\/.\-\+;:=,\?\[\]@]+?))(,|\.|:|)?(?=\s|"|<|>|\"|<|>|$)/iu" ,
'$1$2$4' ,
$s
);
return $s;
}
// Convert raw title to html with allowed urls
function titleMarkup($title)
{
//escape all unsafe
$title = htmlspecialchars($title, ENT_QUOTES);
// make links from text starting with 'www.'
$title = preg_replace(
"/(^|\s|>)(www\.([\w\#$%&~\/.\-\+;:=,\?\[\]@]+?))(,|\.|:|)?(?=\s|"|<|>|\"|<|>|$)/iu" ,
'$1$2$4' ,
$title
);
// make link from text starting with protocol like 'http://'
$title = preg_replace(
"/(^|\s|>)([a-z]+:\/\/([\w\#$%&~\/.\-\+;:=,\?\[\]@]+?))(,|\.|:|)?(?=\s|"|<|>|\"|<|>|$)/iu" ,
'$1$2$4' ,
$title
);
return $title;
}