| Total Complexity | 58 | 
| Total Lines | 475 | 
| Duplicated Lines | 0 % | 
| Changes | 0 | ||
Complex classes like Command often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Command, and based on these observations, apply Extract Interface, too.
| 1 | <?php  | 
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| 21 | class Command  | 
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| 22 | { | 
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| 23 | |||
| 24 | /** @var Console */  | 
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| 25 | private $console;  | 
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| 26 | private $name;  | 
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| 27 | private $aliases = [];  | 
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| 28 | private $definition;  | 
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| 29 | private $help;  | 
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| 30 | private $description;  | 
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| 31 | private $ignoreValidationErrors = false;  | 
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| 32 | private $consoleDefinitionMerged = false;  | 
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| 33 | private $consoleDefinitionMergedWithArgs = false;  | 
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| 34 | private $code;  | 
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| 35 | private $synopsis = [];  | 
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| 36 | private $usages = [];  | 
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| 37 | |||
| 38 | /** @var Input */  | 
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| 39 | protected $input;  | 
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| 40 | |||
| 41 | /** @var Output */  | 
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| 42 | protected $output;  | 
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| 43 | |||
| 44 | /** @var App */  | 
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| 45 | protected $app;  | 
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| 46 | |||
| 47 | /**  | 
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| 48 | * 构造方法  | 
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| 49 | * @param string|null $name 命令名称,如果没有设置则比如在 configure() 里设置  | 
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| 50 | * @throws \LogicException  | 
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| 51 | * @api  | 
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| 52 | */  | 
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| 53 | public function __construct($name = null)  | 
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| 54 |     { | 
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| 55 | $this->definition = new Definition();  | 
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| 56 | |||
| 57 |         if (null !== $name) { | 
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| 58 | $this->setName($name);  | 
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| 59 | }  | 
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| 60 | |||
| 61 | $this->configure();  | 
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| 62 | |||
| 63 |         if (!$this->name) { | 
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| 64 |             throw new \LogicException(sprintf('The command defined in "%s" cannot have an empty name.', get_class($this))); | 
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| 65 | }  | 
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| 66 | }  | 
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| 67 | |||
| 68 | /**  | 
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| 69 | * 忽略验证错误  | 
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| 70 | */  | 
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| 71 | public function ignoreValidationErrors(): void  | 
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| 72 |     { | 
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| 73 | $this->ignoreValidationErrors = true;  | 
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| 74 | }  | 
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| 75 | |||
| 76 | /**  | 
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| 77 | * 设置控制台  | 
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| 78 | * @param Console $console  | 
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| 79 | */  | 
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| 80 | public function setConsole(Console $console = null): void  | 
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| 81 |     { | 
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| 82 | $this->console = $console;  | 
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| 83 | }  | 
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| 84 | |||
| 85 | /**  | 
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| 86 | * 获取控制台  | 
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| 87 | * @return Console  | 
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| 88 | * @api  | 
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| 89 | */  | 
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| 90 | public function getConsole(): Console  | 
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| 91 |     { | 
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| 92 | return $this->console;  | 
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| 93 | }  | 
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| 94 | |||
| 95 | /**  | 
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| 96 | * 设置app  | 
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| 97 | * @param App $app  | 
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| 98 | */  | 
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| 99 | public function setApp(App $app)  | 
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| 100 |     { | 
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| 101 | $this->app = $app;  | 
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| 102 | }  | 
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| 103 | |||
| 104 | /**  | 
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| 105 | * 获取app  | 
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| 106 | * @return App  | 
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| 107 | */  | 
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| 108 | public function getApp()  | 
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| 109 |     { | 
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| 110 | return $this->app;  | 
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| 111 | }  | 
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| 112 | |||
| 113 | /**  | 
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| 114 | * 是否有效  | 
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| 115 | * @return bool  | 
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| 116 | */  | 
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| 117 | public function isEnabled(): bool  | 
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| 118 |     { | 
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| 119 | return true;  | 
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| 120 | }  | 
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| 121 | |||
| 122 | /**  | 
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| 123 | * 配置指令  | 
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| 124 | */  | 
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| 125 | protected function configure()  | 
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| 126 |     { | 
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| 127 | }  | 
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| 128 | |||
| 129 | /**  | 
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| 130 | * 执行指令  | 
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| 131 | * @param Input $input  | 
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| 132 | * @param Output $output  | 
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| 133 | * @return null|int  | 
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| 134 | * @throws \LogicException  | 
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| 135 | * @see setCode()  | 
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| 136 | */  | 
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| 137 | protected function execute(Input $input, Output $output)  | 
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| 138 |     { | 
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| 139 | return $this->app->invoke([$this, 'handle']);  | 
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| 140 | }  | 
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| 141 | |||
| 142 | /**  | 
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| 143 | * 用户验证  | 
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| 144 | * @param Input $input  | 
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| 145 | * @param Output $output  | 
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| 146 | */  | 
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| 147 | protected function interact(Input $input, Output $output)  | 
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| 148 |     { | 
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| 149 | }  | 
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| 150 | |||
| 151 | /**  | 
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| 152 | * 初始化  | 
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| 153 | * @param Input $input An InputInterface instance  | 
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| 154 | * @param Output $output An OutputInterface instance  | 
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| 155 | */  | 
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| 156 | protected function initialize(Input $input, Output $output)  | 
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| 157 |     { | 
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| 158 | }  | 
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| 159 | |||
| 160 | /**  | 
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| 161 | * 执行  | 
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| 162 | * @param Input $input  | 
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| 163 | * @param Output $output  | 
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| 164 | * @return int  | 
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| 165 | * @throws \Exception  | 
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| 166 | * @see setCode()  | 
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| 167 | * @see execute()  | 
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| 168 | */  | 
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| 169 | public function run(Input $input, Output $output): int  | 
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| 170 |     { | 
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| 171 | $this->input = $input;  | 
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| 172 | $this->output = $output;  | 
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| 173 | |||
| 174 | $this->getSynopsis(true);  | 
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| 175 | $this->getSynopsis(false);  | 
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| 176 | |||
| 177 | $this->mergeConsoleDefinition();  | 
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| 178 | |||
| 179 |         try { | 
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| 180 | $input->bind($this->definition);  | 
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| 181 |         } catch (\Exception $e) { | 
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| 182 |             if (!$this->ignoreValidationErrors) { | 
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| 183 | throw $e;  | 
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| 184 | }  | 
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| 185 | }  | 
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| 186 | |||
| 187 | $this->initialize($input, $output);  | 
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| 188 | |||
| 189 |         if ($input->isInteractive()) { | 
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| 190 | $this->interact($input, $output);  | 
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| 191 | }  | 
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| 192 | |||
| 193 | $input->validate();  | 
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| 194 | |||
| 195 |         if ($this->code) { | 
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| 196 | $statusCode = call_user_func($this->code, $input, $output);  | 
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| 197 |         } else { | 
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| 198 | $statusCode = $this->execute($input, $output);  | 
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| 199 | }  | 
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| 200 | |||
| 201 | return is_numeric($statusCode) ? (int) $statusCode : 0;  | 
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| 202 | }  | 
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| 203 | |||
| 204 | /**  | 
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| 205 | * 设置执行代码  | 
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| 206 | * @param callable $code callable(InputInterface $input, OutputInterface $output)  | 
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| 207 | * @return Command  | 
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| 208 | * @throws \InvalidArgumentException  | 
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| 209 | * @see execute()  | 
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| 210 | */  | 
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| 211 | public function setCode(callable $code)  | 
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| 212 |     { | 
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| 213 |         if (PHP_VERSION_ID >= 50400 && $code instanceof \Closure) { | 
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| 214 | $r = new \ReflectionFunction($code);  | 
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| 215 |             if (null === $r->getClosureThis()) { | 
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| 216 | $code = \Closure::bind($code, $this);  | 
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| 217 | }  | 
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| 218 | }  | 
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| 219 | |||
| 220 | $this->code = $code;  | 
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| 221 | |||
| 222 | return $this;  | 
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| 223 | }  | 
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| 224 | |||
| 225 | /**  | 
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| 226 | * 合并参数定义  | 
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| 227 | * @param bool $mergeArgs  | 
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| 228 | */  | 
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| 229 | public function mergeConsoleDefinition(bool $mergeArgs = true)  | 
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| 230 |     { | 
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| 231 | if (null === $this->console  | 
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| 232 | || (true === $this->consoleDefinitionMerged  | 
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| 233 | && ($this->consoleDefinitionMergedWithArgs || !$mergeArgs))  | 
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| 234 |         ) { | 
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| 235 | return;  | 
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| 236 | }  | 
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| 237 | |||
| 238 |         if ($mergeArgs) { | 
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| 239 | $currentArguments = $this->definition->getArguments();  | 
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| 240 | $this->definition->setArguments($this->console->getDefinition()->getArguments());  | 
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| 241 | $this->definition->addArguments($currentArguments);  | 
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| 242 | }  | 
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| 243 | |||
| 244 | $this->definition->addOptions($this->console->getDefinition()->getOptions());  | 
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| 245 | |||
| 246 | $this->consoleDefinitionMerged = true;  | 
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| 247 |         if ($mergeArgs) { | 
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| 248 | $this->consoleDefinitionMergedWithArgs = true;  | 
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| 249 | }  | 
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| 250 | }  | 
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| 251 | |||
| 252 | /**  | 
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| 253 | * 设置参数定义  | 
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| 254 | * @param array|Definition $definition  | 
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| 255 | * @return Command  | 
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| 256 | * @api  | 
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| 257 | */  | 
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| 258 | public function setDefinition($definition)  | 
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| 259 |     { | 
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| 260 |         if ($definition instanceof Definition) { | 
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| 261 | $this->definition = $definition;  | 
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| 262 |         } else { | 
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| 263 | $this->definition->setDefinition($definition);  | 
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| 264 | }  | 
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| 265 | |||
| 266 | $this->consoleDefinitionMerged = false;  | 
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| 267 | |||
| 268 | return $this;  | 
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| 269 | }  | 
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| 270 | |||
| 271 | /**  | 
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| 272 | * 获取参数定义  | 
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| 273 | * @return Definition  | 
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| 274 | * @api  | 
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| 275 | */  | 
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| 276 | public function getDefinition(): Definition  | 
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| 277 |     { | 
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| 278 | return $this->definition;  | 
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| 279 | }  | 
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| 280 | |||
| 281 | /**  | 
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| 282 | * 获取当前指令的参数定义  | 
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| 283 | * @return Definition  | 
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| 284 | */  | 
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| 285 | public function getNativeDefinition(): Definition  | 
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| 286 |     { | 
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| 287 | return $this->getDefinition();  | 
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| 288 | }  | 
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| 289 | |||
| 290 | /**  | 
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| 291 | * 添加参数  | 
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| 292 | * @param string $name 名称  | 
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| 293 | * @param int $mode 类型  | 
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| 294 | * @param string $description 描述  | 
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| 295 | * @param mixed $default 默认值  | 
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| 296 | * @return Command  | 
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| 297 | */  | 
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| 298 | public function addArgument(string $name, int $mode = null, string $description = '', $default = null)  | 
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| 299 |     { | 
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| 300 | $this->definition->addArgument(new Argument($name, $mode, $description, $default));  | 
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| 301 | |||
| 302 | return $this;  | 
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| 303 | }  | 
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| 304 | |||
| 305 | /**  | 
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| 306 | * 添加选项  | 
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| 307 | * @param string $name 选项名称  | 
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| 308 | * @param string $shortcut 别名  | 
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| 309 | * @param int $mode 类型  | 
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| 310 | * @param string $description 描述  | 
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| 311 | * @param mixed $default 默认值  | 
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| 312 | * @return Command  | 
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| 313 | */  | 
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| 314 | public function addOption(string $name, string $shortcut = null, int $mode = null, string $description = '', $default = null)  | 
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| 315 |     { | 
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| 316 | $this->definition->addOption(new Option($name, $shortcut, $mode, $description, $default));  | 
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| 317 | |||
| 318 | return $this;  | 
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| 319 | }  | 
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| 320 | |||
| 321 | /**  | 
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| 322 | * 设置指令名称  | 
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| 323 | * @param string $name  | 
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| 324 | * @return Command  | 
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| 325 | * @throws \InvalidArgumentException  | 
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| 326 | */  | 
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| 327 | public function setName(string $name)  | 
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| 328 |     { | 
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| 329 | $this->validateName($name);  | 
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| 330 | |||
| 331 | $this->name = $name;  | 
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| 332 | |||
| 333 | return $this;  | 
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| 334 | }  | 
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| 335 | |||
| 336 | /**  | 
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| 337 | * 获取指令名称  | 
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| 338 | * @return string  | 
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| 339 | */  | 
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| 340 | public function getName(): string  | 
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| 341 |     { | 
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| 342 | return $this->name ?: '';  | 
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| 343 | }  | 
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| 344 | |||
| 345 | /**  | 
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| 346 | * 设置描述  | 
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| 347 | * @param string $description  | 
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| 348 | * @return Command  | 
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| 349 | */  | 
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| 350 | public function setDescription(string $description)  | 
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| 351 |     { | 
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| 352 | $this->description = $description;  | 
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| 353 | |||
| 354 | return $this;  | 
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| 355 | }  | 
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| 356 | |||
| 357 | /**  | 
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| 358 | * 获取描述  | 
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| 359 | * @return string  | 
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| 360 | */  | 
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| 361 | public function getDescription(): string  | 
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| 362 |     { | 
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| 363 | return $this->description ?: '';  | 
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| 364 | }  | 
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| 365 | |||
| 366 | /**  | 
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| 367 | * 设置帮助信息  | 
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| 368 | * @param string $help  | 
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| 369 | * @return Command  | 
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| 370 | */  | 
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| 371 | public function setHelp(string $help)  | 
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| 372 |     { | 
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| 373 | $this->help = $help;  | 
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| 374 | |||
| 375 | return $this;  | 
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| 376 | }  | 
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| 377 | |||
| 378 | /**  | 
            ||
| 379 | * 获取帮助信息  | 
            ||
| 380 | * @return string  | 
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| 381 | */  | 
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| 382 | public function getHelp(): string  | 
            ||
| 383 |     { | 
            ||
| 384 | return $this->help ?: '';  | 
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| 385 | }  | 
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| 386 | |||
| 387 | /**  | 
            ||
| 388 | * 描述信息  | 
            ||
| 389 | * @return string  | 
            ||
| 390 | */  | 
            ||
| 391 | public function getProcessedHelp(): string  | 
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| 405 | }  | 
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| 406 | |||
| 407 | /**  | 
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| 408 | * 设置别名  | 
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| 409 | * @param string[] $aliases  | 
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| 410 | * @return Command  | 
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| 411 | * @throws \InvalidArgumentException  | 
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| 412 | */  | 
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| 413 | public function setAliases(iterable $aliases)  | 
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| 414 |     { | 
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| 415 |         foreach ($aliases as $alias) { | 
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| 416 | $this->validateName($alias);  | 
            ||
| 417 | }  | 
            ||
| 418 | |||
| 419 | $this->aliases = $aliases;  | 
            ||
| 420 | |||
| 421 | return $this;  | 
            ||
| 422 | }  | 
            ||
| 423 | |||
| 424 | /**  | 
            ||
| 425 | * 获取别名  | 
            ||
| 426 | * @return array  | 
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| 427 | */  | 
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| 428 | public function getAliases(): array  | 
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| 429 |     { | 
            ||
| 430 | return $this->aliases;  | 
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| 431 | }  | 
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| 432 | |||
| 433 | /**  | 
            ||
| 434 | * 获取简介  | 
            ||
| 435 | * @param bool $short 是否简单的  | 
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| 436 | * @return string  | 
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| 437 | */  | 
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| 438 | public function getSynopsis(bool $short = false): string  | 
            ||
| 439 |     { | 
            ||
| 440 | $key = $short ? 'short' : 'long';  | 
            ||
| 441 | |||
| 442 |         if (!isset($this->synopsis[$key])) { | 
            ||
| 443 |             $this->synopsis[$key] = trim(sprintf('%s %s', $this->name, $this->definition->getSynopsis($short))); | 
            ||
| 444 | }  | 
            ||
| 445 | |||
| 446 | return $this->synopsis[$key];  | 
            ||
| 447 | }  | 
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| 448 | |||
| 449 | /**  | 
            ||
| 450 | * 添加用法介绍  | 
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| 451 | * @param string $usage  | 
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| 452 | * @return $this  | 
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| 453 | */  | 
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| 454 | public function addUsage(string $usage)  | 
            ||
| 463 | }  | 
            ||
| 464 | |||
| 465 | /**  | 
            ||
| 466 | * 获取用法介绍  | 
            ||
| 467 | * @return array  | 
            ||
| 468 | */  | 
            ||
| 469 | public function getUsages(): array  | 
            ||
| 470 |     { | 
            ||
| 471 | return $this->usages;  | 
            ||
| 472 | }  | 
            ||
| 473 | |||
| 474 | /**  | 
            ||
| 475 | * 验证指令名称  | 
            ||
| 476 | * @param string $name  | 
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| 477 | * @throws \InvalidArgumentException  | 
            ||
| 478 | */  | 
            ||
| 479 | private function validateName(string $name)  | 
            ||
| 480 |     { | 
            ||
| 481 |         if (!preg_match('/^[^\:]++(\:[^\:]++)*$/', $name)) { | 
            ||
| 482 |             throw new \InvalidArgumentException(sprintf('Command name "%s" is invalid.', $name)); | 
            ||
| 483 | }  | 
            ||
| 484 | }  | 
            ||
| 485 | |||
| 486 | /**  | 
            ||
| 487 | * 输出表格  | 
            ||
| 488 | * @param Table $table  | 
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| 489 | * @return string  | 
            ||
| 490 | */  | 
            ||
| 491 | protected function table(Table $table): string  | 
            ||
| 496 | }  | 
            ||
| 497 | }  | 
            ||
| 498 |