thinkphp/library/think/console/command/optimize/Autoload.php

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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2016 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: yunwuxin <448901948@qq.com>
// +----------------------------------------------------------------------
namespace think\console\command\optimize;

use think\App;
use think\Config;
use think\console\Command;
use think\console\Input;
use think\console\Output;

class Autoload extends Command
{

    protected function configure()
    {
        $this->setName('optimize:autoload')
            ->setDescription('Optimizes PSR0 and PSR4 packages to be loaded with classmaps too, good for production.');
    }

    protected function execute(Input $input, Output $output)
    {

        $classmapFile = <<<EOF
<?php
/**
 * 类库映射
 */

return [

EOF;

        $namespacesToScan = [
            App::$namespace . '\\' => realpath(rtrim(APP_PATH)),
            'think\\'              => LIB_PATH . 'think',
            'behavior\\'           => LIB_PATH . 'behavior',
            'traits\\'             => LIB_PATH . 'traits',
            ''                     => realpath(rtrim(EXTEND_PATH)),
        ];

        $root_namespace = Config::get('root_namespace');
        foreach ($root_namespace as $namespace => $dir) {
            $namespacesToScan[$namespace . '\\'] = realpath($dir);
        }

        krsort($namespacesToScan);
        $classMap = [];
        foreach ($namespacesToScan as $namespace => $dir) {

            if (!is_dir($dir)) {
                continue;
            }