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<?php
class CCompress
{
public static function OnPageStart()
{
ob_start();
ob_start(); // second buffering envelope for PHP URL rewrite, see http://bugs.php.net/bug.php?id=35933
ob_implicit_flush(0);
}
public static function OnAfterEpilog()
{
global $USER;
$canEditPHP = $USER->CanDoOperation('edit_php');
$bShowTime = isset($_SESSION["SESS_SHOW_TIME_EXEC"]) && ($_SESSION["SESS_SHOW_TIME_EXEC"] == 'Y');
$bShowStat = ($GLOBALS["DB"]->ShowSqlStat && ($canEditPHP || $_SESSION["SHOW_SQL_STAT"]=="Y"));
$bShowCacheStat = (\Bitrix\Main\Data\Cache::getShowCacheStat() && ($canEditPHP || $_SESSION["SHOW_CACHE_STAT"]=="Y"));
$bExcel = isset($_REQUEST["mode"]) && $_REQUEST["mode"] === 'excel';
$ENCODING = CCompress::CheckCanGzip();
if($ENCODING !== 0)
{
$level = 4;
if (isset($_GET["compress"]))
{
if ($_GET["compress"] === "Y" || $_GET["compress"] === "y")
$_SESSION["SESS_COMPRESS"] = "Y";
elseif ($_GET["compress"] === "N" || $_GET["compress"] === "n")
unset($_SESSION["SESS_COMPRESS"]);
}
if(!defined("ADMIN_AJAX_MODE") && !defined('PUBLIC_AJAX_MODE') && !$bExcel)
{
if($bShowTime || $bShowStat || $bShowCacheStat)
{
$main_exec_time = round((getmicrotime()-START_EXEC_TIME), 4);
include_once($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/main/interface/debug_info.php");
}
if(isset($_SESSION["SESS_COMPRESS"]) && $_SESSION["SESS_COMPRESS"] == "Y")
include($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/compression/table.php");
}
ob_end_flush();
$Contents = ob_get_contents();
ob_end_clean();
if(!defined("BX_SPACES_DISABLED") || BX_SPACES_DISABLED!==true)
if((strpos($GLOBALS["HTTP_USER_AGENT"], "MSIE 5")>0 || strpos($GLOBALS["HTTP_USER_AGENT"], "MSIE 6.0")>0) && strpos($GLOBALS["HTTP_USER_AGENT"], "Opera")===false)
$Contents = str_repeat(" ", 2048)."\r\n".$Contents;
$Size = function_exists("mb_strlen")? mb_strlen($Contents, 'latin1'): strlen($Contents);
$Crc = crc32($Contents);
$Contents = gzcompress($Contents, $level);
$Contents = function_exists("mb_substr")? mb_substr($Contents, 0, -4, 'latin1'): substr($Contents, 0, -4);
header("Content-Encoding: $ENCODING");
print "\x1f\x8b\x08\x00\x00\x00\x00\x00";
print $Contents;
print pack('V',$Crc);
print pack('V',$Size);
}
else
{
ob_end_flush();
ob_end_flush();
if(($bShowTime || $bShowStat || $bShowCacheStat) && !defined("ADMIN_AJAX_MODE") && !defined('PUBLIC_AJAX_MODE'))
{
$main_exec_time = round((getmicrotime()-START_EXEC_TIME), 4);
include_once($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/main/interface/debug_info.php");
}
}
}
public static function DisableCompression()
{
define("BX_COMPRESSION_DISABLED", true);
}
public static function Disable2048Spaces()
{
define("BX_SPACES_DISABLED", true);
}
public static function CheckCanGzip()
{
if(!function_exists("gzcompress")) return 0;
if(defined("BX_COMPRESSION_DISABLED") && BX_COMPRESSION_DISABLED===true) return 0;
if(headers_sent() || connection_aborted()) return 0;
if(ini_get('zlib.output_compression') == 1) return 0;
if($GLOBALS["HTTP_ACCEPT_ENCODING"] == '') return 0;
if(strpos($_SERVER["HTTP_ACCEPT_ENCODING"],'x-gzip') !== false) return "x-gzip";
if(strpos($_SERVER["HTTP_ACCEPT_ENCODING"],'gzip') !== false) return "gzip";
return 0;
}
}