public function minifyCSS($output)
{
global $vqmod;
global $config;
require_once DIR_SYSTEM . 'library/base32.php';
$css_pattern = '~<link rel="stylesheet" type="text\\/css" href="(.*?\\.css)".*?\\/?>~i';
$all_css_scripts = array();
$css_excludes = array();
$dir_include = '';
$cdn_css = '';
$base32_encode = new Base32();
if ($config->get('config_cdn_status') && $config->get('config_cdn_css')) {
// SETUP CDN URLS
$cdn_css = isset($_SERVER['HTTPS']) && ($_SERVER['HTTPS'] == 'on' || $_SERVER['HTTPS'] == '1') ? $config->get('config_cdn_https') : $config->get('config_cdn_http');
}
$parsed_url = parse_url(HTTP_SERVER);
if (strlen($parsed_url['path']) > 1) {
$dir_include = substr($parsed_url['path'], 1, strlen($parsed_url['path']) - 1);
}
if (preg_match('~.*<\\/head>~im', $output) && !defined('DIR_CATALOG')) {
// IF OUTPUT HAS A HTML HEAD SECTION
$header_data_split = preg_split('~<\\/head>~i', $output);
$header_data = $header_data_split[0];
$after_header_data = $header_data_split[1];
$match_data = preg_replace('/<!--\\[if.*?\\]>\\s*?.*?<!\\[endif\\]-->/is', '', $header_data);
//REMOVE CONDITIONAL DATA
$match_data = preg_replace('/<!--.*?-->/is', '', $match_data);
//REMOVE COMMENTED DATA
$match_data = preg_replace('~<link rel="stylesheet" type="text\\/css" href="http(.*?\\.css)".*?\\/?>~i', '', $match_data);
//REMOVE EXTERNAL CSS
$match_data = preg_replace('~<link rel="stylesheet" type="text\\/css" href="\\/\\/(.*?\\.css)".*?\\/?>~i', '', $match_data);
//REMOVE EXTERNAL JAVASCRIPT
$match_data = preg_replace('~\\?v\\=1\\.0\\.11~i', '', $match_data);
//SHOPPICA
//CSS EXCLUDES
$css_exclude = $config->get('config_ipscss_excludes');
if (!empty($css_exclude)) {
$css_excludes = explode($css_exclude, ",");
foreach ($css_excludes as $csse) {
$match_data = preg_replace('~<link rel="stylesheet" type="text\\/css" href=".*?' . trim($csse) . '.*?".*?\\/?>~i', '', $match_data);
//REMOVE CUSTOM CSS
}
}
$match_data = preg_replace('~<link rel="stylesheet" type="text\\/css" href="\\/\\/(.*?\\.css)".*?\\/?>~i', '', $match_data);
//REMOVE EXTERNAL JAVASCRIPT
$css_files = array();
preg_match_all($css_pattern, $match_data, $matches, PREG_OFFSET_CAPTURE);
foreach ($matches[1] as $match) {
$css_files[] = $match[0];
}
$css_base = $this->getCommonPath($css_files);
foreach ($css_files as $key => $cssfile) {
if (!empty($css_base)) {
$css_base = substr($css_base, -1) == '/' ? substr($css_base, 0, -1) : $css_base;
//REMOVE TRAILING SLASH IF EXISTING
$css_files[$key] = str_replace($css_base . '/', '', $cssfile);
}
$header_data = preg_replace('~<link rel="stylesheet" type="text\\/css" href="' . str_replace('/', '\\/', $cssfile) . '".*?/?>~i', '', $header_data);
}
if ($css_files) {
//IF WE HAVE CSS FILES TO COMBINE
if ($config->get('config_minify_encode_url')) {
$css_combined = $cdn_css . '/' . $dir_include . 'min/' . (strlen($css_base . $dir_include) ? $base32_encode->toBase('b=' . $dir_include . $css_base) . '/' : '') . $base32_encode->toBase('f=' . implode(array_unique($css_files), ',')) . '/combined.css';
} else {
$css_combined = $cdn_css . '/' . $dir_include . 'min/index.php?' . (strlen($css_base . $dir_include) ? 'b=' . $dir_include . $css_base . '&' : '') . 'f=' . implode(array_unique($css_files), ',');
}
$header_data = preg_replace('~</title>~', '</title>' . "\n" . '<link type="text/css" rel="stylesheet" href="' . $css_combined . '" media="all" />', $header_data);
}
return $header_data . '</head>' . $after_header_data;
} else {
return $output;
}
}
