APlayer_Plugin::parseCallback PHP Метод

    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;
    }