| Total Complexity | 71 |
| Total Lines | 347 |
| Duplicated Lines | 0 % |
| Changes | 21 | ||
| Bugs | 5 | Features | 0 |
Complex classes like I 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 I, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
||
| 19 | class I |
||
| 20 | { |
||
| 21 | |||
| 22 | /** |
||
| 23 | * 获取值 |
||
| 24 | * |
||
| 25 | * 支持类型:数组对象和 null、数字和字符串、布尔值、回调函数,依据数据类型有不同的含义(但是都很合理) |
||
| 26 | * |
||
| 27 | * @param mixed $mixed 混合类型 |
||
| 28 | * - 当 $mixed 为**数组或对象**时,此方法用于按照层级获取值,用法如下: |
||
| 29 | * 1. 对于一个多维数组 $array 来说,a.b.cd_ef 会拿 $array['a']['b']['cd_ef'] 的值 |
||
| 30 | * 2. 如果 $array['a'] 是对象,则先检查 getB 方法,然后检查 b 属性 |
||
| 31 | * 3. 如果 $array['a']['b'] 是对象,则检查 getCdEf 方法,然后检查 cd_ef 属性 |
||
| 32 | * - 当 $mixed 为**布尔值**(即表达式)时,等价于三元操作符,例如 I::get(1 > 2, '真', '假') |
||
| 33 | * - 当 $mixed 为**字符串或数字**时,等价于 Strings::sub,截取字符串 |
||
| 34 | * - 当 $mixed 为 **null** 时,含义可被描述为:在使用 I::get($array, 'a.b', 1),$array 意外的是 null,返回 1 是理所当然的 |
||
| 35 | * - 当 $mixed 为**回调函数**,$mixed 的执行结果将作为 I::get 的返回值 |
||
| 36 | * @param mixed $keyString 取决于 $mixed 的类型: |
||
| 37 | * - 当 $mixed 为**数组或对象**时,$keyString 表示:点(.)分割代表层级的字符串,下划线用于对象中转化成驼峰方法,支持数组和对象嵌套 |
||
| 38 | * - 当 $mixed 为**布尔值**(即表达式)时,$keyString 表示:$mixed 为 true 时返回的值 |
||
| 39 | * - 当 $mixed 为**字符串或数字**时,$keyString 强制转为整型,表示:截取 $mixed 时,子串的起始位置 |
||
| 40 | * - 当 $mixed 为 **null** 时,此参数无效 |
||
| 41 | * - 当 $mixed 为**回调函数**,如果 $mixed 的返回值代表 true(如:1),则执行此回调 |
||
| 42 | * @param mixed $defaultValue 取决于 $mixed 的类型: |
||
| 43 | * - 当 $mixed 为**数组或对象**时,$defaultValue 表示:拿不到值时会直接返回该默认值 |
||
| 44 | * - 当 $mixed 为**布尔值**(即表达式)时,$defaultValue 表示:$mixed 为 false 时返回的值 |
||
| 45 | * - 当 $mixed 为**字符串或数字**时,$defaultValue 表示:截取 $mixed 时,子串的长度,null 时表示长度为 1 |
||
| 46 | * - 当 $mixed 为 **null** 时,返回 $defaultValue |
||
| 47 | * - 当 $mixed 为**回调函数**,如果 $mixed 的返回值代表 false(如:0),则执行此回调 |
||
| 48 | * |
||
| 49 | * @return mixed |
||
| 50 | */ |
||
| 51 | public static function get($mixed, $keyString, $defaultValue = null) |
||
| 52 | { |
||
| 53 | if (true === $mixed) { |
||
| 54 | return $keyString; |
||
| 55 | } elseif (false === $mixed) { |
||
| 56 | return $defaultValue; |
||
| 57 | } elseif (is_array($mixed) || is_object($mixed)) { |
||
| 58 | $keyArray = explode('.', $keyString); |
||
| 59 | foreach ($keyArray as $key) { |
||
| 60 | if (is_array($mixed)) { |
||
| 61 | if (array_key_exists($key, $mixed) && null !== $mixed[$key]) { |
||
| 62 | $mixed = $mixed[$key]; |
||
| 63 | } else { |
||
| 64 | return $defaultValue; |
||
| 65 | } |
||
| 66 | } elseif (is_object($mixed)) { |
||
| 67 | $method = 'get' . ucfirst(Strings::toCamel($key)); |
||
| 68 | if (method_exists($mixed, $method)) { |
||
| 69 | $mixed = $mixed->$method(); |
||
| 70 | } elseif (property_exists($mixed, $key) && null !== $mixed->$key) { |
||
| 71 | $mixed = $mixed->$key; |
||
| 72 | } else { |
||
| 73 | return $defaultValue; |
||
| 74 | } |
||
| 75 | } else { |
||
| 76 | return $defaultValue; |
||
| 77 | } |
||
| 78 | } |
||
| 79 | return $mixed; |
||
| 80 | } elseif (is_string($mixed) || is_numeric($mixed)) { |
||
| 81 | $pos = (int) $keyString; |
||
| 82 | $length = null === $defaultValue ? 1 : (int) $defaultValue; |
||
| 83 | return Strings::sub($mixed, $pos, $length); |
||
| 84 | } elseif (null === $mixed) { |
||
| 85 | return $defaultValue; |
||
| 86 | } elseif (is_callable($mixed)) { |
||
| 87 | $result = self::trigger($mixed); |
||
| 88 | if ($result) { |
||
| 89 | self::trigger($keyString); |
||
| 90 | } else { |
||
| 91 | self::trigger($defaultValue); |
||
| 92 | } |
||
| 93 | return $result; |
||
| 94 | } |
||
| 95 | } |
||
| 96 | |||
| 97 | /** |
||
| 98 | * 设置值 |
||
| 99 | * |
||
| 100 | * @param array|object $mixed 对象或数组 |
||
| 101 | * @param string $key 键 |
||
| 102 | * @param mixed $value 值 |
||
| 103 | * @param boolean $overWrite 如果对应的值存在,是否用给定的值覆盖,默认 true,即:是 |
||
| 104 | * |
||
| 105 | * @return mixed |
||
| 106 | */ |
||
| 107 | public static function set(&$mixed, $key, $value, $overWrite = true) |
||
| 108 | { |
||
| 109 | $get = self::get($mixed, $key); |
||
| 110 | if (null === $get || true === $overWrite) { |
||
| 111 | if (is_array($mixed)) { |
||
| 112 | $mixed[$key] = $value; |
||
| 113 | } elseif (is_object($mixed)) { |
||
| 114 | $method = 'set' . ucfirst(Strings::toCamel($key)); |
||
| 115 | if (method_exists($mixed, $method)) { |
||
| 116 | $mixed->$method($value); |
||
| 117 | } elseif (property_exists($mixed, $key)) { |
||
| 118 | $mixed->$key = $value; |
||
| 119 | } else { |
||
| 120 | throw new Exception('无法设置值'); |
||
| 121 | } |
||
| 122 | } |
||
| 123 | return $value; |
||
| 124 | } |
||
| 125 | return $get; |
||
| 126 | } |
||
| 127 | |||
| 128 | /** |
||
| 129 | * 触发回调 |
||
| 130 | * |
||
| 131 | * @param callback $callback 回调函数 |
||
| 132 | * @param array $params 回调参数 |
||
| 133 | * @return mixed |
||
| 134 | */ |
||
| 135 | public static function trigger($callback, $params = []) |
||
| 136 | { |
||
| 137 | $result = false; |
||
| 138 | is_callable($callback) && $result = call_user_func_array($callback, $params); |
||
| 139 | return $result; |
||
| 140 | } |
||
| 141 | |||
| 142 | /** |
||
| 143 | * 定义一个常量 |
||
| 144 | * |
||
| 145 | * @param string $constant 常量名 |
||
| 146 | * @param mixed $value 值 |
||
| 147 | * |
||
| 148 | * @return void |
||
| 149 | */ |
||
| 150 | public static function def($constant, $value) |
||
| 153 | } |
||
| 154 | |||
| 155 | /** |
||
| 156 | * 让 empty 支持函数调用 |
||
| 157 | * |
||
| 158 | * 注意:此函数并不比 empty 好,只是为了让 empty 支持函数调用 |
||
| 159 | * |
||
| 160 | * 例如:empty($array[0]) 就不能用此函数代替,另外,empty 是语法结构,性能明显比函数高 |
||
| 161 | * |
||
| 162 | * @see http://php.net/manual/zh/function.empty.php |
||
| 163 | * |
||
| 164 | * @param mixed $data |
||
| 165 | * @return boolean |
||
| 166 | */ |
||
| 167 | public static function isEmpty($data) |
||
| 170 | } |
||
| 171 | |||
| 172 | /** |
||
| 173 | * 获取 php.ini 配置值 |
||
| 174 | * |
||
| 175 | * @param string $key 配置名 |
||
| 176 | * @param mixed $default 默认值 |
||
| 177 | * |
||
| 178 | * @return mixed |
||
| 179 | */ |
||
| 180 | public static function phpini($key, $default = null) |
||
| 181 | { |
||
| 182 | if (false !== ($ini = ini_get($key))) { |
||
| 183 | return $ini; |
||
| 184 | } |
||
| 185 | if (false !== ($ini = get_cfg_var($key))) { |
||
| 186 | return $ini; |
||
| 187 | } |
||
| 188 | return $default; |
||
| 189 | } |
||
| 190 | |||
| 191 | /** |
||
| 192 | * 显示 PHP 错误 |
||
| 193 | * |
||
| 194 | * @param boolean $show 是否显示,默认是 |
||
| 195 | * |
||
| 196 | * @return void |
||
| 197 | */ |
||
| 198 | public static function displayErrors($show = true) |
||
| 202 | } |
||
| 203 | |||
| 204 | /** |
||
| 205 | * 别名列表 |
||
| 206 | * |
||
| 207 | * @var array |
||
| 208 | */ |
||
| 209 | public static $aliases = []; |
||
| 210 | |||
| 211 | /** |
||
| 212 | * 用别名获取真实路径 |
||
| 213 | * |
||
| 214 | * @param string $alias 别名 |
||
| 215 | * @param bool $loadNew 是否加载新别名到 I 里,默认否 |
||
| 216 | * |
||
| 217 | * @return string|boolean |
||
| 218 | */ |
||
| 219 | public static function getAlias($alias, $loadNew = false) |
||
| 220 | { |
||
| 221 | if (strncmp($alias, '@', 1)) { |
||
| 222 | return $alias; |
||
| 223 | } |
||
| 224 | $localFile = new LocalFile(); |
||
| 225 | $aliases = [ |
||
| 226 | '@vendor' => __DIR__ . '/../../../../vendor', |
||
| 227 | '@icy2003/php_tests' => __DIR__ . '/../tests', |
||
| 228 | '@icy2003/php_runtime' => __DIR__ . '/../runtime', |
||
| 229 | '@icy2003/php' => __DIR__, |
||
| 230 | ]; |
||
| 231 | foreach ($aliases as $k => $v) { |
||
| 232 | if (false === array_key_exists($k, static::$aliases)) { |
||
| 233 | static::$aliases[$k] = $localFile->getRealpath($v); |
||
| 234 | } |
||
| 235 | } |
||
| 236 | |||
| 237 | $pos = 0; |
||
| 238 | while (true) { |
||
| 239 | $pos = strpos($alias, '/', $pos); |
||
| 240 | $root = $pos === false ? $alias : substr($alias, 0, $pos); |
||
| 241 | if (isset(static::$aliases[$root])) { |
||
| 242 | if (is_string(static::$aliases[$root])) { |
||
| 243 | return $pos === false ? static::$aliases[$root] : static::$aliases[$root] . substr($alias, $pos); |
||
| 244 | } elseif (is_array(static::$aliases[$root])) { |
||
| 245 | foreach (static::$aliases[$root] as $name => $path) { |
||
| 246 | if (strpos($alias . '/', $name . '/') === 0) { |
||
| 247 | return $path . substr($alias, strlen($name)); |
||
| 248 | } |
||
| 249 | } |
||
| 250 | } else { |
||
| 251 | return false; |
||
| 252 | } |
||
| 253 | } |
||
| 254 | if ($root == $alias) { |
||
| 255 | break; |
||
| 256 | } |
||
| 257 | $pos++; |
||
| 258 | } |
||
| 259 | // 对 Yii2 的支持 |
||
| 260 | if ($result = self::trigger(['\Yii', 'getAlias'], [$alias])) { |
||
| 261 | true === $loadNew && self::setAlias($alias, $result); |
||
| 262 | return $result; |
||
| 263 | } |
||
| 264 | |||
| 265 | return false; |
||
| 266 | } |
||
| 267 | |||
| 268 | /** |
||
| 269 | * 是否是 Yii2 项目 |
||
| 270 | * |
||
| 271 | * @return boolean |
||
| 272 | */ |
||
| 273 | public static function isYii2() |
||
| 276 | } |
||
| 277 | |||
| 278 | /** |
||
| 279 | * 设置别名 |
||
| 280 | * |
||
| 281 | * @param string $alias 别名 |
||
| 282 | * @param string|null $path 路径 |
||
| 283 | * |
||
| 284 | * @return void |
||
| 285 | */ |
||
| 286 | public static function setAlias($alias, $path) |
||
| 321 | } |
||
| 322 | } |
||
| 323 | } |
||
| 324 | |||
| 325 | /** |
||
| 326 | * 判断给定选项值里是否设置某选项 |
||
| 327 | * |
||
| 328 | * @param integer $flags 选项值 |
||
| 329 | * @param integer $flag 待判断的选项值 |
||
| 330 | * |
||
| 331 | * @return boolean |
||
| 332 | */ |
||
| 333 | public static function hasFlag($flags, $flag) |
||
| 334 | { |
||
| 335 | return $flags === ($flag | $flags); |
||
| 336 | } |
||
| 337 | |||
| 338 | /** |
||
| 339 | * 创建一个对象 |
||
| 340 | * |
||
| 341 | * @param array $params |
||
| 342 | * - class:表示类名,可使用别名 |
||
| 343 | * - 其他:该类的属性,初始化这些属性 |
||
| 344 | * @param array $config |
||
| 345 | * - 构造函数传参 |
||
| 346 | * |
||
| 347 | * @return object |
||
| 348 | */ |
||
| 349 | public static function createObject($params, $config = []) |
||
| 366 | } |
||
| 367 | } |
||
| 368 |