/misc/js/gzip.php

<?php

/**
* @see http://mrthink.net/ue-php-gzip-function/
*/

require_once(dirname(__FILE__) . "/../../init.php");

UtilAjax::init();

if (extension_loaded('zlib')) {//检查服务器是否开启了zlib拓展
    ob_start('ob_gzhandler');
}
header("Cache-Control: must-revalidate");
$offset = 60 * 60 * 24 * 3;
$ExpStr = "Expires: " . gmdate("D, d M Y H:i:s", time() + $offset) . " GMT";
header($ExpStr);
ob_start("compress");
function compress($buffer)
{
//去除文件中的注释
    $buffer = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!', '', $buffer);
    return $buffer;
}
$jsFile  = @$_GET['js'];
$cssFile = @$_GET['css'];
$group   = @$_GET['g'];
$version = @$_GET['v'];

if (isset($jsFile)) {
    if (contain($jsFile, "?")) {
        $jsFile = substr($jsFile, 0, strpos($jsFile, "?"));
    }
    if (!endWith($jsFile, ".js")) {
        return;
    }
    header("Content-type: text/javascript; charset: UTF-8");
    if (EnumJsFramework::isEnumValue($group)) {
        $ajax_root = Gc::$nav_root_path . "misc" . DS . "js" . DS . "ajax" . DS;
        $jsFile = str_replace("/", DS, $jsFile);
        switch ($group) {
            case EnumJsFramework::JS_FW_JQUERY:
            case EnumJsFramework::JS_FW_MOOTOOLS:
                echo "请使用UtilAjax的load方法，直接加载" . $group . "的js文件；无需使用Gzip压缩!";
                die();
                break;
            case EnumJsFramework::JS_FW_PROTOTYPE:
            case EnumJsFramework::JS_FW_DOJO:
            case EnumJsFramework::JS_FW_YUI:
            case EnumJsFramework::JS_FW_SCRIPTACULOUS:
                include($ajax_root . $group . DS . $group . ".js");
                break;
            case EnumJsFramework::JS_FW_EXTJS:
                if ($version < 4) {
                    $ext_root = $ajax_root . "ext" . DS;
                } else {
                    $ext_root = $ajax_root . "ext4" . DS;
                }
                $js_header = $ext_root . $jsFile;
                include($js_header);
                break;
        }
    } else {
        $url_base = UtilNet::urlbase();
        if (contain($jsFile, $url_base)) {
            $jsFile = str_replace($url_base, "", $jsFile);
            $file_sub_dir = str_replace("/", DS, dirname($_SERVER["SCRIPT_FILENAME"])) . DS;
            if (contain(Gc::$nav_root_path, "/mnt/") && contain($file_sub_dir, "/var/")) {
                $file_sub_dir = str_replace("/var/", "/mnt/", $file_sub_dir);
            }
            if (contain($file_sub_dir, Gc::$nav_root_path)) {
                $jsFile = Gc::$nav_root_path . $jsFile;
            } else {
                $jsFile = $_SERVER["DOCUMENT_ROOT"] . "/" . $jsFile;
            }
            $jsFile = str_replace("/", DS, $jsFile);
        }
        include($jsFile);
    }
}

if (isset($cssFile)) {
    if (contain($cssFile, "?")) {
        $cssFile = substr($cssFile, 0, strpos($cssFile, "?"));
    }
    if (!endWith($cssFile, ".css")) {
        return;
    }
    header("Content-type: text/css; charset: UTF-8");
    if (EnumJsFramework::isEnumValue($group)) {
        $ajax_root = Gc::$nav_root_path . "misc" . DS . "js" . DS . "ajax" . DS;
        $cssFile   = str_replace("/", DS, $cssFile);
        switch ($group) {
            case EnumJsFramework::JS_FW_EXTJS:
                if ($version < 4) {
                    $ext_root = $ajax_root . "ext" . DS;
                } else {
                    $ext_root = $ajax_root . "ext4" . DS;
                }
                include($ext_root . $cssFile);
                break;
        }
    } else {
        $url_base = UtilNet::urlbase();
        if (contain($cssFile, $url_base)) {
            $cssFile      = str_replace($url_base, "", $cssFile);
            $file_sub_dir = str_replace("/", DS, dirname($_SERVER["SCRIPT_FILENAME"])) . DS;
            if (contain(Gc::$nav_root_path, "/mnt/") && contain($file_sub_dir, "/var/")) {
                $file_sub_dir = str_replace("/var/", "/mnt/", $file_sub_dir);
            }
            if (contain($file_sub_dir, Gc::$nav_root_path)) {
                $cssFile = Gc::$nav_root_path . $cssFile;
            } else {
                $cssFile = $_SERVER["DOCUMENT_ROOT"] . "/" . $cssFile;
            }
            $cssFile = str_replace("/", DS, $cssFile);
        }
        include($cssFile);
    }
}

if (extension_loaded("zlib")) {
    if (Gc::$is_online_optimize) {
        $result = ob_get_clean();
        $result = UtilString::online_optimize($result);
        echo $result;
    } else {
        ob_end_flush();//输出buffer中的内容
    }
}