Easyswoole源码分析-7-help

介绍

所有command类都实现了CommandInterface接口

interface CommandInterface
{public function commandName():string;public function exec(array $args):?string ;public function help(array $args):?string ;
}

分析

CommandRunner类里面当输入不存在的command时，会默认为help

function run(array $args):?string 
{···if(!CommandContainer::getInstance()->get($command)){$command = 'help';}···
}

help类

class Help implements CommandInterface
{public function commandName(): string{// TODO: Implement commandName() method.return 'help';}public function exec(array $args): ?string{// TODO: Implement exec() method.// 如果没有任何command，则直接调用本类的help方法if (!isset($args[0])) {return $this->help($args);} else {$actionName = $args[0];array_shift($args);// 获取相应命令的对象$call = CommandContainer::getInstance()->get($actionName);// 是否实现了CommandInterface接口if ($call instanceof CommandInterface) {// 执行相应command类的help方法return $call->help($args);} else {return "no help message for command {$actionName} was found";}}}public function help(array $args): ?string{// TODO: Implement help() method.// 获取所有command$allCommand = implode(PHP_EOL, CommandContainer::getInstance()->getCommandList());// 展示es log$logo = Utility::easySwooleLog();return $logo.<<<HELP
Welcome To EASYSWOOLE Command Console!
Usage: php easyswoole [command] [arg]
Get help : php easyswoole help [command]
Current Register Command:
{$allCommand}
HELP;}
}