catch_nbfd_admin/extend/catcher/library/ProgressBar.php

<?php
declare(strict_types=1);

/**
 * @filename  ProgressBar.php
 * @createdAt 2020/6/20
 * @project  https://github.com/yanwenwu/catch-admin
 * @document http://doc.catchadmin.com
 * @author   JaguarJack <njphper@gmail.com>
 * @copyright By CatchAdmin
 * @license  https://github.com/yanwenwu/catch-admin/blob/master/LICENSE.txt
 */
 namespace catcher\library;

 use think\console\Output;

 class ProgressBar
 {
     protected $output;

     protected $total;

     protected $current = 0;

     protected $header = '[x] ';

     protected $length= 100;

     protected $average;

     public function __construct(Output $output, int $total)
     {
         $this->output = $output;

         $this->total = $total;

         $this->average = $this->length/$total;
     }

     /**
      * 开始
      *
      * @time 2020年06月20日
      * @return void
      */
     public function start()
     {
        $this->write();
     }

     /**
      * 前进
      *
      * @time 2020年06月20日
      * @param int $step
      * @return void
      */
     public function advance($step = 1)
     {
         $this->current += $step;

         $this->write();
     }

     /**
      * 结束
      *
      * @time 2020年06月20日
      * @return void
      */
     public function finished()
     {
        $this->write(true);

        $this->current = 1;
     }

     /**
      * 输出
      *
      * @time 2020年06月20日
      * @param bool $end
      * @return void
      */
     protected function write($end = false)
     {

        $bar = $this->bar()  . ($end ? '' : "\r");

        $this->output->write(sprintf('<info>%s</info>', $bar), false);
     }

     /**
      * 进度条
      *
      * @time 2020年06月20日
      * @return string
      */
     protected function bar()
     {
         $left = $this->total - $this->current;

         $empty = str_repeat(' ', $left * $this->average);

         $bar = str_repeat('>', $this->current * $this->average);

         $percent = ((int)(sprintf('%.2f', $this->current/$this->total) * 100)) . '%';

         return $this->header . $bar . $empty . ' ' . $percent;
     }

     /**
      * 设置头信息
      *
      * @time 2020年06月20日
      * @param $header
      * @return $this
      */
     public function setHeader($header)
     {
         $this->header = $header;

         return $this;
     }
 }