/**
*
* @return type
*/
public static function getCombinedFile()
{
$aGet = self::getArray(array('f' => 'alnum', 'd' => 'int', 'i' => 'int', 'type' => 'word'));
$iLifetime = (int) $aGet['d'] * 24 * 60 * 60;
$aCache = JchPlatformCache::getCache($aGet['f'], $iLifetime);
if ($aCache === FALSE) {
die('File not found');
}
$aTimeMFile = JchPlatformUtility::RFC1123DateAdd($aCache['filemtime'], $aGet['d']);
$sTimeMFile = $aTimeMFile['filemtime'] . ' GMT';
$sExpiryDate = $aTimeMFile['expiry'] . ' GMT';
$headers = array();
if (function_exists('apache_request_headers')) {
$headers = apache_request_headers();
}
if (!empty($headers) && isset($headers['If-Modified-Since']) && strtotime($headers['If-Modified-Since']) == strtotime($sTimeMFile)) {
// Client's cache IS current, so we just respond '304 Not Modified'.
header('HTTP/1.1 304 Not Modified');
header('Connection: close');
return;
} else {
header('Last-Modified: ' . $sTimeMFile);
}
$sFile = $aCache['file'][$aGet['i']];
$sFile = JchOptimizeOutput::getCachedFile($sFile, $iLifetime);
$aSpriteCss = $aCache['spritecss'];
if ($aGet['type'] == 'css') {
if (!empty($aSpriteCss)) {
$sFile = str_replace($aSpriteCss['needles'], $aSpriteCss['replacements'], $sFile);
}
if (!empty($aCache['font-face'])) {
$sFile = str_replace($aCache['font-face'], '', $sFile);
}
$oCssParser = new JchOptimizeCssParser();
$sFile = $oCssParser->sortImports($sFile);
if (function_exists('mb_convert_encoding')) {
$sFile = '@charset "utf-8";' . $sFile;
}
}
if ($aGet['type'] == 'css') {
header('Content-type: text/css; charset=UTF-8');
} elseif ($aGet['type'] == 'js') {
header('Content-type: text/javascript; charset=UTF-8');
}
header('Expires: ' . $sExpiryDate);
header('Cache-Control: Public');
header('Vary: Accept-Encoding');
$gzip = TRUE;
if (isset($_SERVER['HTTP_USER_AGENT'])) {
/* Facebook User Agent
* facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)
* LinkedIn User Agent
* LinkedInBot/1.0 (compatible; Mozilla/5.0; Jakarta Commons-HttpClient/3.1 +http://www.linkedin.com)
*/
$pattern = strtolower('/facebookexternalhit|LinkedInBot/x');
if (preg_match($pattern, strtolower($_SERVER['HTTP_USER_AGENT']))) {
$gzip = FALSE;
}
}
if (isset($aGet['gz']) && $aGet['gz'] == 'gz' && $gzip) {
$aSupported = array('x-gzip' => 'gz', 'gzip' => 'gz', 'deflate' => 'deflate');
if (isset($_SERVER['HTTP_ACCEPT_ENCODING'])) {
$aAccepted = array_map('trim', (array) explode(',', $_SERVER['HTTP_ACCEPT_ENCODING']));
$aEncodings = array_intersect($aAccepted, array_keys($aSupported));
} else {
$aEncodings = array('gzip');
}
if (!empty($aEncodings)) {
foreach ($aEncodings as $sEncoding) {
if ($aSupported[$sEncoding] == 'gz' || $aSupported[$sEncoding] == 'deflate') {
$sGzFile = gzencode($sFile, 4, $aSupported[$sEncoding] == 'gz' ? FORCE_GZIP : FORCE_DEFLATE);
if ($sGzFile === FALSE) {
continue;
}
header('Content-Encoding: ' . $sEncoding);
$sFile = $sGzFile;
break;
}
}
}
}
header('Content-Length: ' . strlen($sFile));
echo $sFile;
}
