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Plugin.php
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Plugin.php
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<?php
if (!defined('__TYPECHO_ROOT_DIR__')) exit;
if(!extension_loaded('Meting'))include_once 'include/Meting.php';
/**
* 炒鸡漂亮的html5播放器APlayer插件，支持在文章中插入html5播放器，启用前请确保插件的cache目录可写
*
* @package APlayer
* @author ZGQ
* @version 1.4.15
* @dependence 13.12.12-*
* @link https://github.com/FaithPatrick/APlayer-Typecho-Plugin
*/
class APlayer_Plugin implements Typecho_Plugin_Interface
{
//此变量用以在一个变量中区分多个播放器实例
protected static $playerID = 0;
/**
* 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('Widget_Abstract_Contents')->filter = array('APlayer_Plugin','playerfilter');
Typecho_Plugin::factory('Widget_Abstract_Contents')->contentEx = array('APlayer_Plugin','playerparse');
Typecho_Plugin::factory('Widget_Abstract_Contents')->excerptEx = array('APlayer_Plugin','playerparse');
Typecho_Plugin::factory('Widget_Archive')->header = array('APlayer_Plugin','playercss');
Typecho_Plugin::factory('Widget_Archive')->footer = array('APlayer_Plugin','footerjs');
$info = self::is_really_writable(dirname(__FILE__)."/cache") ? "插件启用成功！！" : "APlayer插件目录的cache目录不可写，可能会导致博客加载缓慢！";
return _t($info);
}
/**
* 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() {
$files = glob('usr/plugins/APlayer/cache/*');
foreach($files as $file){
if (is_file($file)){
@unlink($file);
}
}
return _t('APlayer插件禁用成功，所有缓存已清空!');
}
/**
* 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 $form)
{
if (isset($_GET['action']) && $_GET['action'] == 'deletefile')
self::deletefile();
$listexpire = new Typecho_Widget_Helper_Form_Element_Text(
'listexpire', null, '900',
_t('歌单更新周期'), _t('设置歌单的缓存时间（单位：秒），超过设定时间后歌单将自动更新（网易云音乐MP3路径会定时更新，建议设置缓存时间为900秒）'));
$form->addInput($listexpire);
$maintheme = new Typecho_Widget_Helper_Form_Element_Text(
'maintheme', null, '#e6d0b2',
_t('默认主题颜色'), _t('播放器默认的主题颜色，如 #372e21、#75c、red、blue，该设定会被[player]标签中的theme属性覆盖，默认为 #e6d0b2'));
$form->addInput($maintheme);
$nolyric = new Typecho_Widget_Helper_Form_Element_Text(
'nolyric', null, '找不到歌词',
_t('找不到歌词时显示的文字'), _t('找不到歌词时显示的文字'));
$form->addInput($nolyric);
$mutex = new Typecho_Widget_Helper_Form_Element_Radio(
'mutex', array('false'=>_t('是'),'true'=>_t('否')), 'true',
_t('是否允许在一个页面中多个播放器同时播放'), _t('若选择否，当页面中存在多个播放器时，点击其中一个播放器的播放按钮，其它播放器将自动暂停'));
$form->addInput($mutex);
$preload = new Typecho_Widget_Helper_Form_Element_Radio(
'preload', array('false'=>_t('自动'),'none'=>_t('none'),'metadata'=>_t('metadata'),'auto'=>_t('auto')), 'false',
_t('音频预加载(preload)属性'), '自动:移动端为none，桌面端为metadata; none:页面加载后不预加载音频; metadata:当页面加载后仅加载音频的元数据; auto:一旦页面加载，则开始加载音频。');
$form->addInput($preload);
$cache = new Typecho_Widget_Helper_Form_Element_Radio('cache',
array('false'=>_t('否')),'false',_t('清空缓存'),_t('清空插件生成的缓存文件，必要时可以使用'));
$form->addInput($cache);
$submit = new Typecho_Widget_Helper_Form_Element_Submit();
$submit->value(_t('清空歌词，专辑图片链接，在线歌曲缓存'));
$submit->setAttribute('style','position:relative;');
$submit->input->setAttribute('style','position:absolute;bottom:37px;');
$submit->input->setAttribute('class','btn btn-s btn-warn btn-operate');
$submit->input->setAttribute('formaction',Typecho_Common::url('/options-plugin.php?config=APlayer&action=deletefile',Helper::options()->adminUrl));
$form->addItem($submit);
}
/**
* 缓存清空
*
* @access private
* @return void
*/
private function deletefile()
{
$path = __TYPECHO_ROOT_DIR__ .'/usr/plugins/APlayer/cache/';
foreach (glob($path.'*') as $filename) {
@unlink($filename);
}
Typecho_Widget::widget('Widget_Notice')->set(_t('歌词与封面链接，在线歌曲缓存已清空!'),NULL,'success');
Typecho_Response::getInstance()->goBack();
}
/**
* 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) {}
/**
* 头部css挂载,并定义参数的变量
*
* @return void
*/
public static function playercss()
{
$playerurl = Helper::options()->pluginUrl.'/APlayer/assets/dist/';
echo '
<!-- APlayer Start -->
<script>var APlayers = [];var APlayerOptions = [];</script>
<!-- APlayer End -->
';
}
/**
* 尾部js，解析文章中给header的播放器变量添加的播放器参数并生成播放器的html
*
*
* @return void
*/
public static function footerjs()
{
$playerurl = Helper::options()->pluginUrl.'/APlayer/assets/dist/';
echo <<<EOF
<!-- APlayer Start -->
<script type="text/javascript" src="https://cdn.bootcss.com/aplayer/1.6.0/APlayer.min.js" data-no-instant></script>
<script>
var len = APlayerOptions.length;
for(var i=0;i<len;i++){
if(document.getElementById('player' + APlayerOptions[i]['id'])) {
APlayers[i] = new APlayer({
element: document.getElementById('player' + APlayerOptions[i]['id']),
narrow: false,
preload: APlayerOptions[i]['preload'],
mutex: APlayerOptions[i]['mutex'],
autoplay: APlayerOptions[i]['autoplay'],
showlrc: APlayerOptions[i]['showlrc'],
music: APlayerOptions[i]['music'],
theme: APlayerOptions[i]['theme']
});
//APlayers[i].init();
}
}
</script>
<!-- APlayer End -->
EOF;
}
/**
* MD兼容性过滤
*
* @param array $value
* @return array
*/
public static function playerfilter($value)
{
return $value;
}
/**
* 内容标签替换
*
* @param string $content
* @return string
*/
public static function playerparse($content,$widget,$lastResult)
{
$content = empty($lastResult) ? $content : $lastResult;
if ($widget instanceof Widget_Archive) {
//当没有标签时候就直接return提高运行效率
if ( false === strpos( $content, '[' ) ) {
return $content;
}
$pattern = self::get_shortcode_regex( array('player') );
$content = preg_replace_callback("/$pattern/",array('APlayer_Plugin','parseCallback'), $content);
}
return $content;
}
/**
* 回调解析
* @param unknown $matches
* @return string
*/
public static function parseCallback($matches)
{
/*
$mathes array
* 1 - An extra [ to allow for escaping shortcodes with double [[]]
* 2 - The shortcode name
* 3 - The shortcode argument list
* 4 - The self closing /
* 5 - The content of a shortcode when it wraps some content.
* 6 - An extra ] to allow for escaping shortcodes with double [[]]
*/
// allow [[player]] syntax for escaping the tag
if ( $matches[1] == '[' && $matches[6] == ']' ) {
return substr($matches[0], 1, -1);
}
//播放器id
$id = self::getUniqueId();
//还原转义后的html
//[player title="Test Abc" artist="haha" id="1234543"/]
$attr = htmlspecialchars_decode($matches[3]);
//[player]标签的属性，类型为array
$atts = self::shortcode_parse_atts($attr);
//开始解析音乐地址
$result = array();
//解析[player]标签内id和url属性
if (isset($atts['url']) || isset($atts['id'])){
$r = self::parse($matches[5], $atts);
if ($r) $result = array_merge($result, $r);
}
//解析[player][/player]内部的[mp3]标签
if ($matches[4] != '/' && $matches[5]){
//获取正则
$regex = self::get_shortcode_regex(array('mp3'));
//过滤html标签并还原转义后的字符
$content = htmlspecialchars_decode(strip_tags($matches[5]));
//开始解析
if ( ( false !== strpos( $content, '[' ) ) && preg_match_all("/$regex/", $content , $all)){
foreach ($all[0] as $k=>$v){
$a = self::shortcode_parse_atts($all[3][$k]);
//获取所有music信息
$r = self::parse(trim($all[5][$k]), $a);
if ($r) $result = array_merge($result, $r);
}
}
}
//删除id避免与后面的id属性冲突
if (isset($atts['id'])) unset($atts['id']);
//没有歌曲时候直接返回空值避免出错
if (empty($result)) return '';
//主题颜色
$theme = Typecho_Widget::widget('Widget_Options')->plugin('APlayer')->maintheme;
if (!$theme) $theme = '#e6d0b2';
//只允许一个播放器播放
$mutex = Typecho_Widget::widget('Widget_Options')->plugin('APlayer')->mutex;
if ($mutex == "false") $mutex = false;
if ($mutex == "true") $mutex = true;
//Audio preload
$preload = Typecho_Widget::widget('Widget_Options')->plugin('APlayer')->preload;
if (!$preload || $preload == "false") $preload = false;
//播放器默认属性
$data = array(
'id' => $id ,
'autoplay' => false,
'theme' => $theme,
'mutex' => $mutex,
'preload' => $preload
);
//设置播放器属性
if(!empty($atts)){
foreach ($atts as $k => $att) {
$data[$k] = $atts[$k];
}
}
//默认有歌词就显示
if (!isset($data['showlrc'])){
foreach ($result as $v){
if ($v['lyric']) {
$data['showlrc'] = true;
break;
}
}
}
//自动播放
$data['autoplay'] = (bool)$data['autoplay'] && $data['autoplay'] !== 'false';
//歌词
$data['showlrc'] = isset($data['showlrc']) && (bool)$data['showlrc'] && $data['showlrc'] !== 'false' ? 1 : 0 ;
//输出代码
$playerCode = '<div id="player'.$id.'" class="aplayer">
';
//nolyric
$nolyric = Typecho_Widget::widget('Widget_Options')->plugin('APlayer')->nolyric;
if (!$nolyric) $nolyric = '找不到歌词';
//歌词
if (!empty($result)){
foreach ($result as $k=>$v){
//歌词不存在的时候输出'no lyric'
$result[$k]['lrc'] = $v['lyric'] ? $v['lyric'] : "[00:00.00]$nolyric\n[99:00.00] ";
unset($result[$k]['cover']);
unset($result[$k]['lyric']);
unset($result[$k]['artist']);
}
}
$playerCode .= "</div>\n";
//开始添加歌曲列表，若只有一首歌则解析成单曲播放器，否则解析为列表播放器
if (count($result) === 1)
$result = array_shift($result);
$data['music'] = $result;
//加入头部数组
$js = json_encode($data);
$playerCode .= <<<EOF
<script>APlayerOptions.push({$js});</script>
EOF;
return $playerCode;
}
/**
* 获取一个唯一的id以区分各个播放器实例
* @return number
*/
public static function getUniqueId()
{
self::$playerID++;
return self::$playerID;
}
/**
* 根据参数进一步解析得到歌曲的信息
*
* @param string $content 标签内的内容，如歌词
* @param array $atts 歌曲的属性
* @return array 包含解析结果的数组
*/
private static function parse($content = '',$atts = array())
{
//过滤html标签避免出错
$content = strip_tags($content);
//取出[lrc]
$lyric = false;
if( preg_match('/\[(lrc)](.*?)\[\/\\1]/si', $content ,$lyrics) ){
$lyric = $lyrics[2];
}
//最终结果
$return = array();
//解析歌词，如果没有[lrc][/lrc]文本歌词但是有lrc的url的话直接从url中读取并缓存
if(isset($atts['lrc']) && !$lyric){
if($c = self::getlrc($atts['lrc']))
$lyric = $c;
}
$atts['lyric'] = false;
//解析网易云音乐
if(isset($atts['id'])){
$type = isset($atts['type']) ? $atts['type'] : 'song';
$result = self::parse_netease($atts['id'], $type);
if ($result)
$return = array_merge($return, $result);
}
//当网易只返回了一首歌或是插入自己上传的音乐才考虑下方情况
if (isset($atts['url']) || count($return) === 1) {
//自定义歌词
if($lyric)
$atts['lyric'] = $lyric;
//解析封面
if(( ! isset($atts['id']) && isset($atts['url']) && !isset($atts['cover'])) || (isset($atts['cover']) && $atts['cover'] == 'search')){
$title = isset($atts['title']) ? $atts['title'] : '';
$artist = isset($atts['artist']) ? $atts['artist'] : '';
$words = $title.' '.$artist;
if ($title || $artist) {
if ($p = self::getcover($words)) {
$atts['cover'] = $p;
}elseif ($artist){
if ($p = self::getcover($artist)){
$atts['cover'] = $p;
}
}
}
}
//标题和艺术家
if (isset($atts['artist'])) {
$atts['author'] = $atts['artist'];
}elseif ( ! isset($atts['id']) && isset($atts['url'])) {
$atts['author'] = 'Unknown';
}
if (! isset($atts['title']) && ! isset($atts['id']) && isset($atts['url'])) {
$atts['title'] = 'Unknown';
}
//假如不要自动查找封面的话
if (isset($atts['cover'])){
if ($atts['cover'] == 'false' || !(bool)$atts['cover'])
$atts['cover'] = '';
$atts['pic'] = $atts['cover'];
}
//判断是修改网易获取的歌曲属性还是添加自己的歌曲链接
if ( ! isset($atts['id'])) {
$return[] = $atts;
}else{
//当没有自定义歌词时候删除变量避免覆盖掉原有歌词
if ( ! $atts['lyric']) {
unset($atts['lyric']);
}
$return[0] = array_merge($return[0], $atts);
}
}
return $return;
}
/**
* 解析netease信息
*
* @param unknown $id
* @param unknown $type
* @return boolean|multitype:multitype:unknown Ambigous <>
*/
private static function parse_netease($id, $type){
//当id过长时md5避免缓存出错
$key = 'netease_'.$type.'_'.(strlen($id) > 20 ? md5($id) : $id);
$result = self::cache_get($key);
//列表更新周期
$listexpire = Typecho_Widget::widget('Widget_Options')->plugin('APlayer')->listexpire;
if ($listexpire === null) $listexpire = 900;
$listexpire = (int)$listexpire;
//缓存过期或者找不到的时候则重新请求服务器（设置过期时间是因为歌单等信息可能会发生改变），否则返回缓存
if ($result && isset($result['data']) && ($type == "song" && (isset($result['time']) && (time() - $result['time']) < $listexpire))){
$data = $result['data'];
}else{
$data = self::get_netease_music($id, $type);
self::cache_set($key, array('time' => time(),'data' => $data));
}
if (empty($data['trackList'])) return false;
$return = array();
foreach ($data['trackList'] as $v){
$return[] = array(
'author' => $v['artist'],
'artist' => $v['artist'],
'title' => $v['title'],
'pic' => $v['pic'],
'url' => $v['location'],
'lyric' => $v['lyric'],
);
}
return $return;
}
/**
* 从netease中获取歌曲信息
*
* @link https://github.com/webjyh/WP-Player/blob/master/include/player.php
* @param unknown $id
* @param unknown $type 获取的id的类型，song:歌曲,album:专辑,artist:艺人,collect:歌单
*/
private static function get_netease_music($id, $type = 'song'){
$return = false;
switch ( $type ) {
case 'song': $url = "http://music.163.com/api/song/detail/?ids=[$id]"; $key = 'songs'; break;
case 'album': $url = "http://music.163.com/api/album/$id?id=$id"; $key = 'album'; break;
case 'artist': $url = "http://music.163.com/api/artist/$id?id=$id"; $key = 'artist'; break;
case 'collect': $url = "http://music.163.com/api/playlist/detail?id=$id"; $key = 'result'; break;
default: $url = "http://music.163.com/api/song/detail/?ids=[$id]"; $key = 'songs';
}
if (!function_exists('curl_init')) return false;
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HTTPHEADER, array( 'Cookie: appver=2.0.2' ));
curl_setopt($ch, CURLOPT_TIMEOUT, 15);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
curl_setopt($ch, CURLOPT_REFERER, 'http://music.163.com/;');
$cexecute = curl_exec($ch);
curl_close($ch);
if ( $cexecute ) {
$result = json_decode($cexecute, true);
if ( $result['code'] == 200 && $result[$key] ){
$return['status'] = true;
$return['message'] = "";
switch ( $key ){
case 'songs' : $data = $result[$key]; break;
case 'album' : $data = $result[$key]['songs']; break;
case 'artist' : $data = $result['hotSongs']; break;
case 'result' : $data = $result[$key]['tracks']; break;
default : $data = $result[$key]; break;
}
//列表
$list = array();
foreach ( $data as $keys => $data ){
//获取歌词
$lyric = self::get_netease_lyric($data['id']);
if ($lyric) $lyric = $lyric['lyric'];
$meting = new \Metowolf\Meting('netease');
$mp3Url = $meting->url($data['id']);
$mp3Url = json_decode($mp3Url, true);
$mp3Url = str_replace('http://','https://',$mp3Url['data'][0]['url']);
$list[$data['id']] = array(
'song_id' => $data['id'],
'title' => $data['name'],
'album_name' => $data['album']['name'],
'artist' => $data['artists'][0]['name'],
'location' => $mp3Url,//str_replace('http://m', 'https://p', $data['mp3Url']),
'pic' => str_replace('http://','https://',$data['album']['blurPicUrl'].'?param=106x106'),
'lyric' => $lyric
);
}
//修复一次添加多个id的乱序问题
if ($type = 'song' && strpos($id, ',')) {
$ids = explode(',', $id);
$r = array();
foreach ($ids as $v) {
if (!empty($list[$v])) {
$r[] = $list[$v];
}
}
$list = $r;
}
//最终播放列表
$return['trackList'] = $list;
}
} else {
$return = array('status' => false, 'message' => '非法请求');
}
return $return;
}
/**
* 根据id从netease中获取歌词，带缓存
*/
private static function get_netease_lyric($id){
$key = 'netease_lrc_'.$id;
$result = self::cache_get($key);
if($result && isset($result[0])){
return $result[0];
}else{
//缓存取不到则重新抓取
$url = 'http://music.163.com/api/song/media?id='.$id;
$refere = 'http://music.163.com;';
if (!function_exists('curl_init') ) {
return false;
} else {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HTTPHEADER, array( 'Cookie: appver=2.0.2' ));
curl_setopt($ch, CURLOPT_TIMEOUT, 15);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
curl_setopt($ch, CURLOPT_REFERER, $refere);
$cexecute = curl_exec($ch);
curl_close($ch);
$JSON = false;
if ( $cexecute ) {
$result = json_decode($cexecute, true);
if ( $result['code'] == 200 && isset($result['lyric']) && $result['lyric'] ){
$JSON = array('status' => true, 'lyric' => $result['lyric']);
}
} else {
$JSON = array('status' => true, 'lyric' => null);
}
//存入缓存
self::cache_set($key, array($JSON));
return $JSON;
}
}
}
/**
* 通过关键词从豆瓣获取专辑封面链接，当缓存存在时则直接读取缓存
*
* @param string $words
* @return boolean|string
*/
private static function getcover($words){
$key = 'cover_'.md5($words);
if($g = self::cache_get($key)){
if(!isset($g[0])) return false;
return $g[0];
}else{
//缓存不存在时用豆瓣获取并存入缓存
$arg = http_build_query(array('q' => $words,'count'=> 1 ));
$url = false;
$g = self::fetch_url('https://api.douban.com/v2/music/search?'.$arg);
if ($g){
$g = json_decode($g,true);
if($g['count']){
$url = $g['musics'][0]['image'];
//换成大图
$url = str_replace("/spic/", "/mpic/", $url);
}
}
//用array包裹这个变量就不会判断错误啦
self::cache_set($key,array($url));
return $url;
}
}
/**
* 通过url获取歌词内容，若缓存存在就直接读取缓存
*
* @param string $url
* @return boolean|string
*/
private static function getlrc($url){
$key = 'lrc_'.md5($url);
if($g = self::cache_get($key)){
if(!isset($g[0])) return false;
return $g[0];
}else{
//缓存不存在时用url获取并存入缓存
$lyric = self::fetch_url($url);
//用array包裹这个变量就不会判断错误啦
self::cache_set($key,array($lyric));
return $lyric;
}
}
/**
* 缓存写入
*
* @param unknown $key
* @param unknown $value
* @return number
*/
private static function cache_set($key, $value){
$cachedir = dirname(__FILE__)."/cache";
$fp = fopen($cachedir.'/'.$key,"w+");
$status = fwrite($fp,serialize($value));
fclose($fp);
return $status;
}
/**
* 缓存读取
*
* @param unknown $key
* @return mixed|boolean
*/
private static function cache_get($key){
$cachedir = dirname(__FILE__)."/cache";
//找到缓存直接读取缓存目录的文件
if(file_exists($cachedir.'/'.$key)){
return unserialize(file_get_contents($cachedir.'/'.$key));
}else{
return false;
}
}
/**
* url抓取,两种方式,优先用curl,当主机不支持curl时候采用file_get_contents
*
* @param unknown $url
* @return boolean|mixed
*/
private static function fetch_url($url){
if(function_exists('curl_init')){
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true) ;
curl_setopt($ch, CURLOPT_BINARYTRANSFER, true) ;
curl_setopt($ch, CURLOPT_TIMEOUT, 15);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
$output = curl_exec($ch);
$httpCode = curl_getinfo($ch,CURLINFO_HTTP_CODE);
if ($httpCode != 200) return false;
return $output;
}else{
//若主机不支持openssl则file_get_contents不能打开https的url
if($result = @file_get_contents($url)){
if (strpos($http_response_header[0],'200')){
return $result;
}
}
return false;
}
}
/**
* Retrieve all attributes from the shortcodes tag.
*
* The attributes list has the attribute name as the key and the value of the
* attribute as the value in the key/value pair. This allows for easier
* retrieval of the attributes, since all attributes have to be known.
*
* @link https://github.com/WordPress/WordPress/blob/master/wp-includes/shortcodes.php
* @since 2.5.0
*
* @param string $text
* @return array|string List of attribute values.
* Returns empty array if trim( $text ) == '""'.
* Returns empty string if trim( $text ) == ''.
* All other matches are checked for not empty().
*/
private static function shortcode_parse_atts($text) {
$atts = array();
$pattern = '/([\w-]+)\s*=\s*"([^"]*)"(?:\s|$)|([\w-]+)\s*=\s*\'([^\']*)\'(?:\s|$)|([\w-]+)\s*=\s*([^\s\'"]+)(?:\s|$)|"([^"]*)"(?:\s|$)|(\S+)(?:\s|$)/';
$text = preg_replace("/[\x{00a0}\x{200b}]+/u", " ", $text);
if ( preg_match_all($pattern, $text, $match, PREG_SET_ORDER) ) {
foreach ($match as $m) {
if (!empty($m[1]))
$atts[strtolower($m[1])] = stripcslashes($m[2]);
elseif (!empty($m[3]))
$atts[strtolower($m[3])] = stripcslashes($m[4]);
elseif (!empty($m[5]))
$atts[strtolower($m[5])] = stripcslashes($m[6]);
elseif (isset($m[7]) && strlen($m[7]))
$atts[] = stripcslashes($m[7]);
elseif (isset($m[8]))
$atts[] = stripcslashes($m[8]);
}
// Reject any unclosed HTML elements
foreach( $atts as &$value ) {
if ( false !== strpos( $value, '<' ) ) {
if ( 1 !== preg_match( '/^[^<]*+(?:<[^>]*+>[^<]*+)*+$/', $value ) ) {
$value = '';
}
}
}
} else {
$atts = ltrim($text);
}
return $atts;
}
/**
* Retrieve the shortcode regular expression for searching.
*
* The regular expression combines the shortcode tags in the regular expression
* in a regex class.
*
* The regular expression contains 6 different sub matches to help with parsing.
*
* 1 - An extra [ to allow for escaping shortcodes with double [[]]
* 2 - The shortcode name
* 3 - The shortcode argument list
* 4 - The self closing /
* 5 - The content of a shortcode when it wraps some content.
* 6 - An extra ] to allow for escaping shortcodes with double [[]]
*
* @link https://github.com/WordPress/WordPress/blob/master/wp-includes/shortcodes.php
* @since 2.5.0
*
*
* @param array $tagnames List of shortcodes to find. Optional. Defaults to all registered shortcodes.
* @return string The shortcode search regular expression
*/
private static function get_shortcode_regex( $tagnames = null ) {
$tagregexp = join( '|', array_map('preg_quote', $tagnames) );
// WARNING! Do not change this regex without changing do_shortcode_tag() and strip_shortcode_tag()
// Also, see shortcode_unautop() and shortcode.js.
return
'\\[' // Opening bracket
. '(\\[?)' // 1: Optional second opening bracket for escaping shortcodes: [[tag]]
. "($tagregexp)" // 2: Shortcode name
. '(?![\\w-])' // Not followed by word character or hyphen
. '(' // 3: Unroll the loop: Inside the opening shortcode tag
. '[^\\]\\/]*' // Not a closing bracket or forward slash
. '(?:'
. '\\/(?!\\])' // A forward slash not followed by a closing bracket
. '[^\\]\\/]*' // Not a closing bracket or forward slash
. ')*?'
. ')'
. '(?:'
. '(\\/)' // 4: Self closing tag ...
. '\\]' // ... and closing bracket
. '|'
. '\\]' // Closing bracket
. '(?:'
. '(' // 5: Unroll the loop: Optionally, anything between the opening and closing shortcode tags
. '[^\\[]*+' // Not an opening bracket
. '(?:'
. '\\[(?!\\/\\2\\])' // An opening bracket not followed by the closing shortcode tag
. '[^\\[]*+' // Not an opening bracket
. ')*+'
. ')'
. '\\[\\/\\2\\]' // Closing shortcode tag
. ')?'
. ')'
. '(\\]?)'; // 6: Optional second closing brocket for escaping shortcodes: [[tag]]
}
/**
* Tests for file writability
*
* is_writable() returns TRUE on Windows servers when you really can't write to
* the file, based on the read-only attribute. is_writable() is also unreliable
* on Unix servers if safe_mode is on.
*
* @link https://bugs.php.net/bug.php?id=54709
* @param string
* @return bool
*/
private static function is_really_writable($file)
{
// Create cache directory if not exists
if (!file_exists($file))
{
mkdir($file, 0755);
}
// If we're on a Unix server with safe_mode off we call is_writable
if (DIRECTORY_SEPARATOR === '/' && (version_compare(PHP_VERSION, '5.4', '>=') OR ! ini_get('safe_mode')))
{
return is_writable($file);
}
/* For Windows servers and safe_mode "on" installations we'll actually
* write a file then read it. Bah...
*/
if (is_dir($file))
{
$file = rtrim($file, '/').'/'.md5(mt_rand());
if (($fp = @fopen($file, 'ab')) === FALSE)
{
return FALSE;
}
fclose($fp);
@chmod($file, 0777);
@unlink($file);
return TRUE;
}
elseif ( ! is_file($file) OR ($fp = @fopen($file, 'ab')) === FALSE)
{
return FALSE;
}
fclose($fp);
return TRUE;
}
}