/**
* Prepare and output the Javascript for the current page
* @static
*/
public static function GetHead_JS($scripts)
{
global $page, $config;
$combine = $config['combinejs'] && !\gp\tool::loggedIn() && $page->pagetype !== 'admin_display';
$scripts = self::GetHead_CDN('js', $scripts);
//just local jquery
if (!count($page->head_js) && count($scripts) === 1 && isset($scripts['jquery'])) {
echo '<!-- jquery_placeholder ' . gp_random . ' -->';
return;
}
if (!$combine || $page->head_force_inline) {
echo "\n<script type=\"text/javascript\">\n";
\gp\tool::jsStart();
echo "\n</script>";
}
if (is_array($page->head_js)) {
$scripts += $page->head_js;
//other js files
} else {
trigger_error('$page->head_js is not an array');
}
self::CombineFiles($scripts, 'js', $combine);
}
/**
* Generate a file with all of the combined content
*
*/
public static function GenerateFile($files, $type)
{
global $dataDir;
//get etag
$modified = $content_length = 0;
$full_paths = array();
foreach ($files as $file) {
$full_path = self::CheckFile($file);
if ($full_path === false) {
continue;
}
self::FileStat_Static($full_path, $modified, $content_length);
$full_paths[$file] = $full_path;
}
//check css imports
if ($type == 'css') {
$had_imported = false;
$import_data = array();
$imported_file = $dataDir . '/data/_cache/import_info.php';
if (file_exists($imported_file)) {
include_once $imported_file;
}
foreach ($full_paths as $file => $full_path) {
if (!isset($import_data[$full_path])) {
continue;
}
$had_imported = true;
foreach ($import_data[$full_path] as $imported_full) {
self::FileStat_Static($imported_full, $modified, $content_length);
}
unset($import_data[$full_path]);
}
}
//check to see if file exists
$etag = \gp\tool::GenEtag(json_encode($files), $modified, $content_length);
$cache_relative = '/data/_cache/combined_' . $etag . '.' . $type;
$cache_file = $dataDir . $cache_relative;
if (file_exists($cache_file)) {
// change modified time to extend cache
if (time() - filemtime($cache_file) > 604800) {
touch($cache_file);
}
return $cache_relative;
}
//create file
if ($type == 'js') {
ob_start();
\gp\tool::jsStart();
foreach ($full_paths as $full_path) {
readfile($full_path);
echo ";\n";
}
$combined_content = ob_get_clean();
} else {
$imports = $combined_content = '';
$new_imported = array();
foreach ($full_paths as $file => $full_path) {
$temp = new \gp\tool\Output\CombineCss($file);
$combined_content .= "\n/* " . $file . " */\n";
$combined_content .= $temp->content;
$imports .= $temp->imports;
if (count($temp->imported)) {
$new_imported[$full_path] = $temp->imported;
}
}
$combined_content = $imports . $combined_content;
//save imported data
if (count($new_imported) || $had_imported) {
if (count($new_imported)) {
$import_data = $new_imported + $import_data;
}
\gp\tool\Files::SaveData($imported_file, 'import_data', $import_data);
}
}
if (!\gp\tool\Files::Save($cache_file, $combined_content)) {
return false;
}
\gp\admin\Tools::CleanCache();
return $cache_relative;
}
