static function singleton()
{
if (!isset(self::$_instance)) {
$className = __CLASS__;
self::$_instance = new $className();
}
return self::$_instance;
}
/**
* Extract Google fonts from CSS
*/
public function extract_google_fonts($css)
{
$googlefonts = array();
if (preg_match_all('#(?:@import)(?:\\s)(?:url)?(?:(?:(?:\\()(["\'])?(?:[^"\')]+)\\1(?:\\))|(["\'])(?:.+)\\2)(?:[A-Z\\s])*)+(?:;)#Ui', $css, $out) && !empty($out[0])) {
foreach ($out[0] as $n => $fontLink) {
if (substr_count($fontLink, "fonts.googleapis.com/css") > 0) {
$fontLink = preg_replace('|^.*(//fonts\\.[^\\s\'\\"\\)]+)[\\s\\|\'\\|\\"\\|\\)].*|is', '$1', $fontLink);
$googlefonts[] = $fontLink;
}
}
if (!empty($googlefonts)) {
$fonts = '';
foreach ($googlefonts as $font) {
$fonts .= '<link rel="stylesheet" type="text/css" href="' . htmlentities($font) . '" />';
}
$html = '<html><head><title>Fonts 2</title>' . $fonts . '</head><body></body></html>';
$fonts = GWFO::googlefonts_find_google_fonts($html);
return $fonts;
}
}
return false;
}
