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<?php |
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namespace nebula\autoloader; |
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use nebula\autoloader\PathTrait; |
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/** |
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* 自动加载器 |
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* |
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*/ |
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class Loader implements PathInterface |
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{ |
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use PathTrait; |
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/** |
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* 默认命名空间 |
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* |
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* @var array |
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*/ |
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protected static $namespace=[ __NAMESPACE__ ]; |
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/** |
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* 包含路径 |
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* |
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* @var array |
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*/ |
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protected static $includePath=[]; |
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/** |
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* 将JAVA，路径分割转换为PHP分割符 |
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* |
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* @param string $name 类名 |
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* @return string 真实分隔符 |
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*/ |
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public static function realName(string $name):string |
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{ |
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return str_replace(['.','/'], '\\', $name); |
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} |
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/** |
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* 获取真实或者虚拟存在的地址 |
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* |
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* @param string $name |
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* @return string|null |
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*/ |
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public static function realPath(string $name):?string |
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{ |
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$absulotePath = static::toAbsolutePath($name); |
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return file_exists($absulotePath)?$absulotePath:null; |
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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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// 载入系统共享库 |
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static::addIncludePath(dirname(dirname(__DIR__))); |
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} |
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public static function import(string $filename) |
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{ |
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if ($filename = static::realPath($filename)) { |
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@require_once $filename; |
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return $filename; |
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} else { |
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foreach (static::$includePath[0] as $includePath) { |
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if ($path = static::realPath($includePath.DIRECTORY_SEPARATOR.$filename)) { |
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@require_once $path; |
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return $path; |
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} |
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} |
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} |
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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::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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public static function getClassPath(string $className) |
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{ |
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// 搜索路径 |
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foreach (static::$includePath as $includeNamespace => $includePaths) { |
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foreach ($includePaths as $includePath) { |
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if ($path = static::getClassPathByName($includeNamespace, $includePath, $className)) { |
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return $path; |
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} elseif ($path = static::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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protected static 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($className); |
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foreach (static::$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 nulll; |
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} |
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protected static function getClassPathByName(string $includeNamespace, string $includePath, string $className) |
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{ |
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if (is_numeric($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 nulll; |
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} |
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public static function addIncludePath(string $path, string $namespace=null) |
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{ |
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if ($path = static::realPath($path)) { |
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$namespace = $namespace ?? 0; |
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if (array_key_exists($namespace, static::$includePath)) { |
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if (!\in_array($path, static::$includePath[$namespace])) { |
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static::$includePath[$namespace][]=$path; |
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} |
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} else { |
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static::$includePath[$namespace][]=$path; |
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} |
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} |
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} |
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public static function getIncludePath() |
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{ |
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return static::$includePath; |
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} |
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public static function getNamespace() |
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{ |
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return static::$namespace; |
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} |
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public static function setNamespace(string $namespace) |
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{ |
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if (!in_array($namespace, static::$namespace)) { |
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static::$namespace[]=$namespace; |
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} |
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} |
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} |
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dxkite /
suda
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