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Plugin.php
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Plugin.php
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<?php
if (!defined('__TYPECHO_ROOT_DIR__'))
exit;
/**
* 压缩HTML代码
*
* @package CompressHTML
* @author 情留メ蚊子
* @version 1.0.0.1
* @link http://www.94qing.com/
*/
class CompressHTML_Plugin implements Typecho_Plugin_Interface {
/**
* 激活插件方法,如果激活失败,直接抛出异常
*
* @access public
* @return void
* @throws Typecho_Plugin_Exception
*/
public static function activate() {
Typecho_Plugin::factory('index.php')->begin = array('CompressHTML_Plugin', 'Widget_index_begin');
//Typecho_Plugin::factory('Widget_Archive')->beforeRender = array('CompressHTML_Plugin', 'Widget_Archive_beforeRender');
}
/**
* 禁用插件方法,如果禁用失败,直接抛出异常
*
* @static
* @access public
* @return void
* @throws Typecho_Plugin_Exception
*/
public static function deactivate() {
}
/**
* 获取插件配置面板
*
* @access public
* @param Typecho_Widget_Helper_Form $form 配置面板
* @return void
*/
public static function config(Typecho_Widget_Helper_Form $form) {
$compression_open = new Typecho_Widget_Helper_Form_Element_Checkbox('compression_open', array('compression_open' => '开启gzip'), null, _t('是否开启gzip'));
$form->addInput($compression_open);
$compression_level = new Typecho_Widget_Helper_Form_Element_Select('compression_level', array('1' => '1', '2' => '2', '3' => '3', '4' => '4', '5' => '5', '6' => '6', '7' => '7', '8' => '8', '9' => '9'), '5', _t('gzip压缩级别:'), _t('这个参数值范围是0-9，0表示无压缩，9表示最大压缩，当然压缩程度越高越费CPU。*推荐：5'));
$form->addInput($compression_level);
$compress_html = new Typecho_Widget_Helper_Form_Element_Checkbox('compress_html', array('compress_html' => '开启压缩HTML'), null, _t('是否开启压缩HTML'), _t('当开启后页面与原来页面不一致时请关闭'));
$form->addInput($compress_html);
$keyword_replace = new Typecho_Widget_Helper_Form_Element_Textarea('keyword_replace', null, null, _t('HTML关键词替换'), _t('作用：主要把附件的内容转到七牛。一行一个。格式：关键词=替换关键词'));
$form->addInput($keyword_replace);
}
/**
* 个人用户的配置面板
*
* @access public
* @param Typecho_Widget_Helper_Form $form
* @return void
*/
public static function personalConfig(Typecho_Widget_Helper_Form $form) {
}
public static function Widget_index_begin() {
ob_start('CompressHTML_Plugin::qlwz_ob_handler');
}
public static function Widget_Archive_beforeRender() {
ob_start('CompressHTML_Plugin::qlwz_ob_handler');
}
public static function qlwz_ob_handler($buffer) {
$settings = Helper::options()->plugin('CompressHTML');
if ($settings->keyword_replace) {
$list = explode("\r\n", $settings->keyword_replace);
foreach ($list as $tmp) {
list($old, $new) = explode('=', $tmp);
$buffer = str_replace($old, $new, $buffer);
}
}
if ($settings->compress_html) {
$buffer = self::qlwz_compress_html($buffer);
}
if ($settings->compression_open) {
$buffer = self::ob_gzip($buffer, $settings->compression_level);
} else {
if (ini_get('zlib.output_compression')) {
ini_set('zlib.output_compression', 'Off');
}
}
return $buffer;
}
public static function ob_gzip($buffer, $level) {
if (ini_get('zlib.output_compression')) {
if (ini_get('zlib.output_compression_level') != $level) {
ini_set('zlib.output_compression_level', $level);
}
return $buffer;
}
if (headers_sent() || !extension_loaded('zlib') || !strstr($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip')) {
return $buffer;
}
$out_buffer = gzencode($buffer, $level);
if (strlen($out_buffer) < strlen($buffer)) {
header('Content-Encoding: gzip');
header('Vary: Accept-Encoding');
header('Content-Length: ' . strlen($out_buffer));
} else {
$out_buffer = $buffer;
}
return $out_buffer;
}
/**
* 压缩HTML代码
*
* @author 情留メ蚊子 <[email protected]>
* @version 1.0.0.0 By 2016-11-23
* @param string $html_source HTML源码
* @return string 压缩后的代码
*/
public static function qlwz_compress_html($html_source) {
$chunks = preg_split('/(<!--<nocompress>-->.*?<!--<\/nocompress>-->|<nocompress>.*?<\/nocompress>|<pre.*?\/pre>|<textarea.*?\/textarea>|<script.*?\/script>)/msi', $html_source, -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;
}
}