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<?php |
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namespace nebula\loader; |
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use nebula\loader\IncludeManager; |
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/** |
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* 类自动加载器 |
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*/ |
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class Loader extends IncludeManager |
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{ |
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protected static $loader; |
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/** |
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* 注册加载器 |
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* |
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* @return void |
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*/ |
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public static function register() |
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{ |
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// 注册加载器 |
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spl_autoload_register(array(__CLASS__, 'classLoader')); |
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} |
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/** |
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* 获取加载器 |
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* |
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* @return self |
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*/ |
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public static function getLoader() |
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{ |
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if (isset(static::$loader)) { |
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return static::$loader; |
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} |
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return static::$loader = new static; |
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} |
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/** |
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* 自动类加载器 |
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* |
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* @param string $className |
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* @return void |
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*/ |
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public static function classLoader(string $className) |
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{ |
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if ($path = static::$loader->getClassPath($className)) { |
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if (!class_exists($className, false)) { |
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@require_once $path; |
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} |
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} |
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} |
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/** |
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* 获取类路径 |
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* |
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* @param string $className |
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* @return string|null |
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*/ |
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public function getClassPath(string $className):?string |
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{ |
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// 搜索路径 |
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foreach ($this->includePath as $includeNamespace => $includePaths) { |
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foreach ($includePaths as $includePath) { |
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if ($path = $this->getClassPathByName($includeNamespace, $includePath, $className)) { |
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return $path; |
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} elseif ($path = $this->getClassPathByAlias($includePath, $className)) { |
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return $path; |
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} |
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} |
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} |
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return null; |
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} |
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/** |
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* 根据类别名获取路径 |
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* |
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* @param string $includePath |
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* @param string $className |
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* @return string|null |
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*/ |
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protected function getClassPathByAlias(string $includePath, string $className):?string |
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{ |
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$namepath=static::formatSeparator($className); |
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$className=static::realName($className); |
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foreach ($this->namespace as $namespace) { |
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$path = $includePath.DIRECTORY_SEPARATOR.$namespace.DIRECTORY_SEPARATOR.$namepath.'.php'; |
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if ($path = static::realPath($path)) { |
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// 精简类名 |
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if (!class_exists($className, false)) { |
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class_alias($namespace.'\\'.$className, $className); |
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} |
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return $path; |
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} |
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} |
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return null; |
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} |
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/** |
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* 根据类名获取路径 |
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* |
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* @param string $includeNamespace |
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* @param string $includePath |
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* @param string $className |
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* @return string|null |
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*/ |
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protected function getClassPathByName(string $includeNamespace, string $includePath, string $className):?string |
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{ |
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if (is_numeric($includeNamespace)) { |
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$path = $includePath.DIRECTORY_SEPARATOR.static::formatSeparator($className).'.php'; |
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} else { |
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$nl = strlen($includeNamespace); |
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if (substr(static::realName($className), 0, $nl) === $includeNamespace) { |
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$path=$includePath.DIRECTORY_SEPARATOR.static::formatSeparator(substr($className, $nl)).'.php'; |
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} else { |
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$path=$includePath.DIRECTORY_SEPARATOR.static::formatSeparator($className).'.php'; |
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} |
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} |
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if ($path = static::realPath($path)) { |
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return $path; |
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} |
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return null; |
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} |
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} |
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dxkite /
suda
