emlog 无插件实现网站源码压缩 二

之前分享过《emlog 无插件实现网站源码压缩》,此方法需要修改模板中的相关代码,当切换模板后失效,每次都要修改模板,有些麻烦,所以提供以下代码来解决此问题。

在 include\lib\function.base.php 新增代码

function emHTMLCompression($html)
{
    $chunks = preg_split('/(<!--<nocompress>-->.*?<!--<\/nocompress>-->|<nocompress>.*?<\/nocompress>|<pre.*?\/pre>|<textarea.*?\/textarea>|<script.*?\/script>)/msi', $html, -1, PREG_SPLIT_DELIM_CAPTURE);
    $compress = '';
    foreach ($chunks as $c) {
        if (strtolower(substr($c, 0, 19)) == '<!--<nocompress>-->') {
            $c = substr($c, 19, strlen($c) - 19 - 20);
            $compress .= $c;
            continue;
        } else if (strtolower(substr($c, 0, 12)) == '<nocompress>') {
            $c = substr($c, 12, strlen($c) - 12 - 13);
            $compress .= $c;
            continue;
        } else if (strtolower(substr($c, 0, 4)) == '<pre' || strtolower(substr($c, 0, 9)) == '<textarea') {
            $compress .= $c;
            continue;
        } else if (strtolower(substr($c, 0, 7)) == '<script' && strpos($c, '//') != false && (strpos($c, "\r") !== false || strpos($c, "\n") !== false)) { // JS代码,包含“//”注释的,单行代码不处理
            $tmps = preg_split('/(\r|\n)/ms', $c, -1, PREG_SPLIT_NO_EMPTY);
            $c = '';
            foreach ($tmps as $tmp) {
                if (strpos($tmp, '//') !== false) { // 对含有“//”的行做处理
                    if (substr(trim($tmp), 0, 2) == '//') { // 开头是“//”的就是注释
                        continue;
                    }
                    $chars = preg_split('//', $tmp, -1, PREG_SPLIT_NO_EMPTY);
                    $is_quot = $is_apos = false;
                    foreach ($chars as $key => $char) {
                        if ($char == '"' && $chars[$key - 1] != '\\' && !$is_apos) {
                            $is_quot = !$is_quot;
                        } else if ($char == '\'' && $chars[$key - 1] != '\\' && !$is_quot) {
                            $is_apos = !$is_apos;
                        } else if ($char == '/' && $chars[$key + 1] == '/' && !$is_quot && !$is_apos) {
                            $tmp = substr($tmp, 0, $key); // 不是字符串内的就是注释
                            break;
                        }
                    }
                }
                $c .= $tmp;
            }
        }
        $c = preg_replace('/[\\n\\r\\t]+/', ' ', $c); // 清除换行符,清除制表符
        $c = preg_replace('/\\s{2,}/', ' ', $c); // 清除额外的空格
        $c = preg_replace('/>\\s</', '> <', $c); // 清除标签间的空格
        $c = preg_replace('/\\/\\*.*?\\*\\//i', '', $c); // 清除 CSS & JS 的注释
        $c = preg_replace('/<!--[^!]*-->/', '', $c); // 清除 HTML 的注释
        $compress .= $c;
    }
    return $compress;
} 

修改 include\lib\view.php 代码

 public static function output() {
        $content = ob_get_clean();
        if (Option::get('isgzipenable') == 'y' && function_exists('ob_gzhandler')) {
            ob_start('ob_gzhandler');
        } else {
            ob_start();
        }
        echo $content;
        ob_end_flush();
        exit;
    } 

修改为

    public static function output()
    {
        $content = ob_get_clean();
        $initial = strlen($content);
        if (Option::get('isgzipenable') == 'y' && function_exists('ob_gzhandler')) {
            ob_start('ob_gzhandler');
        } else {
            ob_start();
        }
        $content_out = $content;
        $final = strlen($content_out);
        $savings = ($initial - $final) / $initial * 100;
        $savings = round($savings, 2);
        $content_out .= PHP_EOL . "<!--压缩前的大小: $initial bytes; 压缩后的大小: $final bytes; 节约:$savings% -->";
        echo $content_out;
        ob_end_flush();
        exit;
    } 

以上部分代码源自菜鸟建站,感谢。