/**
* Function that will merge & minify the provided files
*
* @param array $files - array with relative paths to js files
* @param string $cachePath - where to save the new merged & minified file
*
* @return string
*/
public static function shrink(array $files, $cachePath)
{
$times = array();
$md5 = md5(json_encode($files));
$url = $cachePath . '/' . $md5 . '.min.js';
$minFile = JPATH_ROOT . '/' . $url;
// Lets read the times of the files we need to merge
foreach ($files as $file) {
if (file_exists(JPATH_ROOT . '/' . $file)) {
$times[] = filemtime(JPATH_ROOT . '/' . $file);
}
}
// If the minFile doesn't exist or the minFile time is older than any of the times, let's do our job!
if (!file_exists($minFile) || max($times) > filemtime($minFile)) {
$js = '';
foreach ($files as $file) {
if (file_exists(JPATH_ROOT . '/' . $file)) {
$js[] = file_get_contents(JPATH_ROOT . '/' . $file);
}
}
// Do the actual minifying
$minJs = CompojoomMinifier::minify(implode($js));
JFile::write($minFile, $minJs);
}
return $url;
}
