If the encode method is '' (none) or compression level is 0, or the 'zlib'
extension isn't loaded, we return false.
Then the appropriate gz_* function is called to compress the content. If
this fails, false is returned.
The header "Vary: Accept-Encoding" is added. If encoding is successful,
the Content-Length header is updated, and Content-Encoding is also added.
/**
* Gzip (encode) the HTTP response and write to output.
* @param string $strBody The content that should be in the response.
* @param string $strContentType The MIME type of the content.
*/
public static function send($strBody, $strContentType = "text/html")
{
$objEncoder = new \HTTP_Encoder(array("content" => $strBody, "type" => $strContentType));
$objEncoder->encode();
$objEncoder->sendAll();
exit;
}
public static function render($arrFilter)
{
$dtLastModified = 0;
//*** Load sources from sources directory.
if (is_dir($GLOBALS["_PATHS"]['css'])) {
//*** Directory exists.
foreach ($arrFilter as $strFilter) {
$strFile = $GLOBALS["_PATHS"]['css'] . "{$strFilter}.css";
$dtLastModified = self::getLastModified($strFile, $dtLastModified);
//*** Auto check custom files.
if (strpos($strFilter, "-custom") === false) {
$strFile = $GLOBALS["_PATHS"]['css'] . "{$strFilter}-custom.css";
$dtLastModified = self::getLastModified($strFile, $dtLastModified);
}
}
}
//*** Check if we can send a "Not Modified" header.
\HTTP_ConditionalGet::check($dtLastModified, true, array("maxAge" => 1200000));
//*** Modified. Get contents.
$strOutput = self::minify($arrFilter);
//*** Gzip the CSS.
$objEncoder = new \HTTP_Encoder(array("content" => $strOutput, "type" => "text/css"));
$objEncoder->encode();
$objEncoder->sendAll();
}
public static function render($arrFilter)
{
$dtLastModified = 0;
//*** Load sources from sources directory.
if (is_dir($GLOBALS["_PATHS"]['js'])) {
//*** Directory exists.
foreach ($arrFilter as $strFilter) {
$strFile = $GLOBALS["_PATHS"]['js'] . $strFilter . ".js";
if (is_file($strFile)) {
$lngLastModified = filemtime($strFile);
if (empty($dtLastModified) || $lngLastModified > $dtLastModified) {
$dtLastModified = $lngLastModified;
}
}
}
}
//*** Check if we can send a "Not Modified" header.
\HTTP_ConditionalGet::check($dtLastModified, true, array("maxAge" => 1200000));
//*** Modified. Get contents.
$strOutput = self::minify($arrFilter);
//*** Gzip the Javascript.
$objEncoder = new \HTTP_Encoder(array("content" => $strOutput, "type" => "text/javascript"));
$objEncoder->encode();
$objEncoder->sendAll();
}
function test_HTTP_Encoder()
{
global $thisDir;
HTTP_Encoder::$encodeToIe6 = true;
$methodTests = array(array('ua' => 'Any browser', 'ae' => 'compress, x-gzip', 'exp' => array('gzip', 'x-gzip'), 'desc' => 'recognize "x-gzip" as gzip'), array('ua' => 'Any browser', 'ae' => 'compress, x-gzip;q=0.5', 'exp' => array('gzip', 'x-gzip'), 'desc' => 'gzip w/ non-zero q'), array('ua' => 'Any browser', 'ae' => 'compress, x-gzip;q=0', 'exp' => array('compress', 'compress'), 'desc' => 'gzip w/ zero q'), array('ua' => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)', 'ae' => 'gzip, deflate', 'exp' => array('', ''), 'desc' => 'IE6 w/o "enhanced security"'), array('ua' => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)', 'ae' => 'gzip, deflate', 'exp' => array('deflate', 'deflate'), 'desc' => 'IE6 w/ "enhanced security"'), array('ua' => 'Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.01)', 'ae' => 'gzip, deflate', 'exp' => array('', ''), 'desc' => 'IE5.5'), array('ua' => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; en) Opera 9.25', 'ae' => 'gzip,deflate', 'exp' => array('deflate', 'deflate'), 'desc' => 'Opera identifying as IE6'));
foreach ($methodTests as $test) {
$_SERVER['HTTP_USER_AGENT'] = $test['ua'];
$_SERVER['HTTP_ACCEPT_ENCODING'] = $test['ae'];
$exp = $test['exp'];
$ret = HTTP_Encoder::getAcceptedEncoding();
$passed = assertTrue($exp == $ret, 'HTTP_Encoder : ' . $test['desc']);
if (__FILE__ === realpath($_SERVER['SCRIPT_FILENAME'])) {
echo "\n--- AE | UA = {$test['ae']} | {$test['ua']}\n";
echo "Expected = " . preg_replace('/\\s+/', ' ', var_export($exp, 1)) . "\n";
echo "Returned = " . preg_replace('/\\s+/', ' ', var_export($ret, 1)) . "\n\n";
}
}
HTTP_Encoder::$encodeToIe6 = false;
$methodTests = array(array('ua' => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)', 'ae' => 'gzip, deflate', 'exp' => array('', ''), 'desc' => 'IE6 w/ "enhanced security"'));
foreach ($methodTests as $test) {
$_SERVER['HTTP_USER_AGENT'] = $test['ua'];
$_SERVER['HTTP_ACCEPT_ENCODING'] = $test['ae'];
$exp = $test['exp'];
$ret = HTTP_Encoder::getAcceptedEncoding();
$passed = assertTrue($exp == $ret, 'HTTP_Encoder : ' . $test['desc']);
if (__FILE__ === realpath($_SERVER['SCRIPT_FILENAME'])) {
echo "\n--- AE | UA = {$test['ae']} | {$test['ua']}\n";
echo "Expected = " . preg_replace('/\\s+/', ' ', var_export($exp, 1)) . "\n";
echo "Returned = " . preg_replace('/\\s+/', ' ', var_export($ret, 1)) . "\n\n";
}
}
if (!function_exists('gzdeflate')) {
echo "!WARN: HTTP_Encoder : Zlib support is not present in PHP. Encoding cannot be performed/tested.\n";
return;
}
// test compression of varied content (HTML,JS, & CSS)
$variedContent = file_get_contents($thisDir . '/_test_files/html/before.html') . file_get_contents($thisDir . '/_test_files/css/subsilver.css') . file_get_contents($thisDir . '/_test_files/js/jquery-1.2.3.js');
$variedLength = strlen($variedContent);
$encodingTests = array(array('method' => 'deflate', 'inv' => 'gzinflate', 'exp' => 32157), array('method' => 'gzip', 'inv' => '_gzdecode', 'exp' => 32175), array('method' => 'compress', 'inv' => 'gzuncompress', 'exp' => 32211));
foreach ($encodingTests as $test) {
$e = new HTTP_Encoder(array('content' => $variedContent, 'method' => $test['method']));
$e->encode(9);
$ret = strlen($e->getContent());
// test uncompression
$roundTrip = @call_user_func($test['inv'], $e->getContent());
$desc = "HTTP_Encoder : {$test['method']} : uncompress possible";
$passed = assertTrue($variedContent == $roundTrip, $desc);
// test expected compressed size
$desc = "HTTP_Encoder : {$test['method']} : compressed to " . sprintf('%4.2f%% of original', $ret / $variedLength * 100);
$passed = assertTrue(abs($ret - $test['exp']) < 100, $desc);
if (__FILE__ === realpath($_SERVER['SCRIPT_FILENAME'])) {
echo "\n--- {$test['method']}: expected bytes: ", "{$test['exp']}. Returned: {$ret} ", "(off by " . abs($ret - $test['exp']) . " bytes)\n\n";
}
}
}
/**
* Encode and send appropriate headers and content
*
* This is a convenience method for common use of the class
*
* @param string $content
*
* @param int $compressionLevel given to zlib functions. If not given, the
* class default will be used.
*
* @return bool success true if the content was actually compressed
*/
public static function output($content, $compressionLevel = null)
{
if (null === $compressionLevel) {
$compressionLevel = self::$compressionLevel;
}
$he = new HTTP_Encoder(array('content' => $content));
$ret = $he->encode($compressionLevel);
$he->sendAll();
return $ret;
}
<?php
/**
* AJAX checks for zlib.output_compression
*
* @package Minify
*/
$_oc = ini_get('zlib.output_compression');
// allow access only if builder is enabled
require __DIR__ . '/../config.php';
if (!$min_enableBuilder) {
header('Location: /');
exit;
}
if (isset($_GET['hello'])) {
// echo 'World!'
// try to prevent double encoding (may not have an effect)
ini_set('zlib.output_compression', '0');
require $min_libPath . '/HTTP/Encoder.php';
HTTP_Encoder::$encodeToIe6 = true;
// just in case
$he = new HTTP_Encoder(array('content' => 'World!', 'method' => 'deflate'));
$he->encode();
$he->sendAll();
} else {
// echo status "0" or "1"
header('Content-Type: text/plain');
echo (int) $_oc;
}
/**
* Echoes the Javascript if not cached.
*
* Echoes the javascript with the correct content.
* Since the content is dinamic, i use the hash function.
*
* @param string $javascript
*
* @return void
*/
private function _echo_javascript($javascript)
{
$conditional_get = new HTTP_ConditionalGet(array('contentHash' => md5($javascript)));
$conditional_get->sendHeaders();
if (!$conditional_get->cacheIsValid) {
$http_encoder = new HTTP_Encoder(array('content' => $javascript, 'type' => 'text/javascript'));
$compression_level = null;
if ($this->_registry->get('model.settings')->get('disable_gzip_compression')) {
// set the compression level to 0 to disable it.
$compression_level = 0;
}
$http_encoder->encode($compression_level);
$http_encoder->sendAll();
}
Ai1ec_Http_Response_Helper::stop(0);
}
