/**
* Returns the absolute path to a given cache entry
* @param string file (path)
* @param int width to resize to
* @param int height to resize to
* @param int value between 0 and 100 for jpeg; null for any other format
*/
function get_cached_file($src, $width, $height, $quality)
{
$testfile = wpws_ImageUtils::generate_cache_filename($src, $width, $height, $quality);
$cached_file = null;
$dh = opendir(WPWS_CACHE_DIR);
while (($file = readdir($dh)) !== false) {
if (substr($file, 0, strlen($testfile)) == $testfile) {
$cached_file = $file;
break;
}
}
closedir($dh);
return $cached_file == null ? null : WPWS_CACHE_DIR . "/" . $cached_file;
}
