動画ダウンローダ - youtube-dlで動画をサーバに保存・進捗状況を出力

youtube_dl_run_progress.php

<?php
    /*
     * youtube-dlコマンド実行と進捗状況の取得
     */
    class youtube_dl_run_progress{
        //外部コマンド設定
        public static $config = array(
          'time'        => '',
          'output_path' => '',
          'url'         => ''
        );
        
        public function command_escape(){
            self::$config['time']        = escapeshellarg(self::$config['time']);
            self::$config['output_path'] = escapeshellarg(self::$config['output_path']);
            self::$config['url']         = escapeshellarg(self::$config['url']);
        }
        
        /*
         * 出力バッファを送信
         */
        public function output_buffer(){
            ob_flush();
            flush();
        }
        
        /*
         * youtube-dlコマンド実行・進捗ログ取得・進捗バー反映
         * @param string cmd コマンド
         */
        public function progress_output(){
            //$this->command_escape();
            
            $cmd   = '/usr/bin/youtube-dl -o "';
            $cmd  .= self::$config['output_path'];
            $cmd  .= '%(id)s_' . self::$config['time'] . '.%(ext)s" "';
            $cmd  .= self::$config['url'] . '" 2>&1';
            
            $handle = popen($cmd,'r');
            $log = fgets($handle);

            $download_url = "";
            
            while(!feof($handle)) {
                //進捗ログ例
                //[dailymotion] xxxxx: Downloading webpage
                //[dailymotion] xxxxx: Downloading m3u8 information
                //[download] Resuming download at byte 13012663
                //[download] Destination: /var/www/html/xxxxxx/movie/xxxxxx_20160507.mp4
                //[download]   8.3% of 365.54MiB at 182.80KiB/s ETA 31:17
                
                  $log = fgets($handle);

                  //[download] Destination: [OUTPUT_FILE]
                  $stream_get_line_start_pattern = "{Destination: /var/www/html/(.*)$}";

                  if(preg_match($stream_get_line_start_pattern, $log, $path)){
                       $download_url = "http://kzz.bz/" . $path[1];
                              
                       //1行ずつ指定文字列まで取得
                       $stream_loop_pattern = "[download]";
                       //[download]   [進捗率] of [総ダウンロード容量] at [秒間ダウンロード容量]/s ETA [残時間]
                       while($log = stream_get_line($handle, 1024, $stream_loop_pattern)){
                            if (!empty($log)){
                                $this->output_buffer();
                                $progress_pattern = "{([\d|\.]+)% of (.*?) at (.*?) ETA ([\d|:]+)}";
                                preg_match($progress_pattern, $log, $res);
                                
                                if (!empty($res)){
                                    echo <<<EOF
                                    <script>
                                        $('#progress_bar').val("{$res[1]}");
                                        $('#output').html("{$res[1]}%");
                                        $('#full_time').html("{$res[4]}");
                                        $('#dl_speed').html("{$res[3]}");
                                        $('#filesize').html("{$res[2]}");
                                    </script>
EOF;
                                }
                                
                                if(preg_match('/100%/', $log)){
                                    echo <<<EOF
                                    <script>
                                        $('#bar_area').html("完了");
                                    </script>
EOF;
                                    break;
                                }
                            }
                       }
                  }
            }

            pclose($handle);
            return $download_url;
        }
    }