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172 lines
6.0 KiB
172 lines
6.0 KiB
7 years ago
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<?php
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$cache = true; // Кеширование
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$cachedir = '../../../cache'; // Путь к кэшу
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// Определяем тип файлов, полный путь к файлам
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// и получаем список имен файлов
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if (!empty($_GET['css']))
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{
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$type = 'css';
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$base = realpath(dirname(__FILE__));
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$hash = md5($_GET['css']);
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$elements = explode(',', $_GET['css']);
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}
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elseif (!empty($_GET['js']))
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{
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$type = 'javascript';
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$base = realpath(dirname(__FILE__));
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$hash = md5($_GET['js']);
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$elements = explode(',', $_GET['js']);
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}
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else
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{
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@header ("HTTP/1.0 503 Not Implemented");
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exit;
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}
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// Determine last modification date of the files
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$lastmodified = 0;
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while (list(,$element) = each($elements)) {
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$path = realpath($base . '/' . $element);
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if (($type == 'javascript' && substr($path, -3) != '.js') ||
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($type == 'css' && substr($path, -4) != '.css')) {
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@header ("HTTP/1.0 403 Forbidden");
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exit;
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}
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if (substr($path, 0, strlen($base)) != $base || !file_exists($path)) {
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@header ("HTTP/1.0 404 Not Found");
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exit;
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}
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$lastmodified = max($lastmodified, filemtime($path));
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}
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// Send Etag hash
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@$hash = $lastmodified . '-' . md5($_GET['files']);
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@header ("Etag: \"" . $hash . "\"");
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if (isset($_SERVER['HTTP_IF_NONE_MATCH']) &&
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stripslashes($_SERVER['HTTP_IF_NONE_MATCH']) == '"' . $hash . '"')
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{
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// Return visit and no modifications, so do not send anything
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@header ("HTTP/1.0 304 Not Modified");
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@header ('Content-Length: 0');
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}
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else
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{
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// First time visit or files were modified
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if ($cache)
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{
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// Determine supported compression method
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$gzip = strstr($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip');
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$deflate = strstr($_SERVER['HTTP_ACCEPT_ENCODING'], 'deflate');
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// Determine used compression method
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$encoding = $gzip ? 'gzip' : ($deflate ? 'deflate' : 'none');
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// Check for buggy versions of Internet Explorer
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if (!strstr($_SERVER['HTTP_USER_AGENT'], 'Opera') &&
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preg_match('/^Mozilla\/4\.0 \(compatible; MSIE ([0-9]\.[0-9])/i', $_SERVER['HTTP_USER_AGENT'], $matches)) {
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$version = floatval($matches[1]);
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if ($version < 6)
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$encoding = 'none';
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if ($version == 6 && !strstr($_SERVER['HTTP_USER_AGENT'], 'EV1'))
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$encoding = 'none';
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}
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// Try the cache first to see if the combined files were already generated
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$cachefile = 'cache-' . $hash . '.' . $type . ($encoding != 'none' ? '.' . $encoding : '');
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if (file_exists($cachedir . '/' . $cachefile)) {
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if ($fp = fopen($cachedir . '/' . $cachefile, 'rb')) {
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if ($encoding != 'none') {
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@header ("Content-Encoding: " . $encoding);
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}
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@header ("Content-Type: text/" . $type);
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@header ("Content-Length: " . filesize($cachedir . '/' . $cachefile));
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fpassthru($fp);
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fclose($fp);
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exit;
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}
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}
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}
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// Get contents of the files
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$contents = '';
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reset($elements);
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while (list(,$element) = each($elements)) {
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$path = realpath($base . '/' . $element);
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$contents .= file_get_contents($path);
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}
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if ($type == 'javascript')
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{
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for ($i = 1; $i < 10; $i++)
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{
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$contents = str_replace("\n\n", "\n", $contents); //Удаляем переносы строк
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$contents = str_replace("\r\r", "\r", $contents); //Удаляем переносы строк
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$contents = str_replace("\r\n\r\n", "\r\n", $contents); //Удаляем переносы строк
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}
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}
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if ($type == 'css')
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{
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$contents = preg_replace('/\/\*.*\*\//Uis', '', $contents); //Удаляем комментарии
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$contents = str_replace("\r", "", $contents); //Удаляем переносы строк
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$contents = str_replace("\n", "", $contents); //Удаляем переносы строк
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$contents = str_replace(chr(9), "", $contents); //Удаляем табуляцию
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$contents = str_replace(" }", "}", $contents); //Удаляем пробелы перед }
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$contents = str_replace(" {", "{", $contents); //Удаляем пробелы перед {
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$contents = str_replace("{ ", "{", $contents); //Удаляем пробелы после {
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$contents = str_replace("} ", "}", $contents); //Удаляем пробелы после }
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$contents = str_replace("; ", ";", $contents); //Удаляем пробелы после ;
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$contents = str_replace(" ;", ";", $contents); //Удаляем пробелы перед ;
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$contents = str_replace(" :", ":", $contents); //Удаляем пробелы перед :
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$contents = str_replace(": ", ":", $contents); //Удаляем пробелы после :
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$contents = str_replace("+ ", "+", $contents); //Удаляем пробелы после +
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$contents = str_replace(" +", "+", $contents); //Удаляем пробелы перед +
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$contents = str_replace("= ", "=", $contents); //Удаляем пробелы после =
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$contents = str_replace(" =", "=", $contents); //Удаляем пробелы перед =
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$contents = str_replace("- ", "-", $contents); //Удаляем пробелы после -
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$contents = str_replace("/ ", "/", $contents); //Удаляем пробелы после /
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$contents = str_replace(" /", "/", $contents); //Удаляем пробелы перед /
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$contents = str_replace(", ", ",", $contents); //Удаляем пробелы после ,
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$contents = str_replace(" ,", ",", $contents); //Удаляем пробелы перед ,
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$contents = str_replace(" ", " ", $contents); //Удаляем двойной пробел
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}
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// Send Content-Type
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@header ("Content-Type: text/" . $type);
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if (isset($encoding) && $encoding != 'none')
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{
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// Send compressed contents
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$contents = gzencode($contents, 3, $gzip ? FORCE_GZIP : FORCE_DEFLATE);
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@header ("Content-Encoding: " . $encoding);
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@header ('Content-Length: ' . strlen($contents));
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echo $contents;
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}
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else
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{
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// Send regular contents
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@header ('Content-Length: ' . strlen($contents));
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echo $contents;
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}
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// Store cache
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if ($cache) {
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if ($fp = fopen($cachedir . '/' . $cachefile, 'wb')) {
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fwrite($fp, $contents);
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fclose($fp);
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}
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}
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}
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?>
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