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- <?php
- // +----------------------------------------------------------------------
- // | ThinkPHP [ WE CAN DO IT JUST THINK ]
- // +----------------------------------------------------------------------
- // | Copyright (c) 2006~2018 http://thinkphp.cn All rights reserved.
- // +----------------------------------------------------------------------
- // | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
- // +----------------------------------------------------------------------
- // | Author: liu21st <liu21st@gmail.com>
- // +----------------------------------------------------------------------
-
- namespace think;
-
- use think\exception\ClassNotFoundException;
-
- class Loader
- {
- /**
- * @var array 实例数组
- */
- protected static $instance = [];
-
- /**
- * @var array 类名映射
- */
- protected static $classMap = [];
-
- /**
- * @var array 命名空间别名
- */
- protected static $namespaceAlias = [];
-
- /**
- * @var array PSR-4 命名空间前缀长度映射
- */
- private static $prefixLengthsPsr4 = [];
-
- /**
- * @var array PSR-4 的加载目录
- */
- private static $prefixDirsPsr4 = [];
-
- /**
- * @var array PSR-4 加载失败的回退目录
- */
- private static $fallbackDirsPsr4 = [];
-
- /**
- * @var array PSR-0 命名空间前缀映射
- */
- private static $prefixesPsr0 = [];
-
- /**
- * @var array PSR-0 加载失败的回退目录
- */
- private static $fallbackDirsPsr0 = [];
-
- /**
- * @var array 需要加载的文件
- */
- private static $files = [];
-
- /**
- * 自动加载
- * @access public
- * @param string $class 类名
- * @return bool
- */
- public static function autoload($class)
- {
- // 检测命名空间别名
- if (!empty(self::$namespaceAlias)) {
- $namespace = dirname($class);
- if (isset(self::$namespaceAlias[$namespace])) {
- $original = self::$namespaceAlias[$namespace] . '\\' . basename($class);
- if (class_exists($original)) {
- return class_alias($original, $class, false);
- }
- }
- }
-
- if ($file = self::findFile($class)) {
- // 非 Win 环境不严格区分大小写
- if (!IS_WIN || pathinfo($file, PATHINFO_FILENAME) == pathinfo(realpath($file), PATHINFO_FILENAME)) {
- __include_file($file);
- return true;
- }
- }
-
- return false;
- }
-
- /**
- * 查找文件
- * @access private
- * @param string $class 类名
- * @return bool|string
- */
- private static function findFile($class)
- {
- // 类库映射
- if (!empty(self::$classMap[$class])) {
- return self::$classMap[$class];
- }
-
- // 查找 PSR-4
- $logicalPathPsr4 = strtr($class, '\\', DS) . EXT;
- $first = $class[0];
-
- if (isset(self::$prefixLengthsPsr4[$first])) {
- foreach (self::$prefixLengthsPsr4[$first] as $prefix => $length) {
- if (0 === strpos($class, $prefix)) {
- foreach (self::$prefixDirsPsr4[$prefix] as $dir) {
- if (is_file($file = $dir . DS . substr($logicalPathPsr4, $length))) {
- return $file;
- }
- }
- }
- }
- }
-
- // 查找 PSR-4 fallback dirs
- foreach (self::$fallbackDirsPsr4 as $dir) {
- if (is_file($file = $dir . DS . $logicalPathPsr4)) {
- return $file;
- }
- }
-
- // 查找 PSR-0
- if (false !== $pos = strrpos($class, '\\')) {
- // namespace class name
- $logicalPathPsr0 = substr($logicalPathPsr4, 0, $pos + 1)
- . strtr(substr($logicalPathPsr4, $pos + 1), '_', DS);
- } else {
- // PEAR-like class name
- $logicalPathPsr0 = strtr($class, '_', DS) . EXT;
- }
-
- if (isset(self::$prefixesPsr0[$first])) {
- foreach (self::$prefixesPsr0[$first] as $prefix => $dirs) {
- if (0 === strpos($class, $prefix)) {
- foreach ($dirs as $dir) {
- if (is_file($file = $dir . DS . $logicalPathPsr0)) {
- return $file;
- }
- }
- }
- }
- }
-
- // 查找 PSR-0 fallback dirs
- foreach (self::$fallbackDirsPsr0 as $dir) {
- if (is_file($file = $dir . DS . $logicalPathPsr0)) {
- return $file;
- }
- }
-
- // 找不到则设置映射为 false 并返回
- return self::$classMap[$class] = false;
- }
-
- /**
- * 注册 classmap
- * @access public
- * @param string|array $class 类名
- * @param string $map 映射
- * @return void
- */
- public static function addClassMap($class, $map = '')
- {
- if (is_array($class)) {
- self::$classMap = array_merge(self::$classMap, $class);
- } else {
- self::$classMap[$class] = $map;
- }
- }
-
- /**
- * 注册命名空间
- * @access public
- * @param string|array $namespace 命名空间
- * @param string $path 路径
- * @return void
- */
- public static function addNamespace($namespace, $path = '')
- {
- if (is_array($namespace)) {
- foreach ($namespace as $prefix => $paths) {
- self::addPsr4($prefix . '\\', rtrim($paths, DS), true);
- }
- } else {
- self::addPsr4($namespace . '\\', rtrim($path, DS), true);
- }
- }
-
- /**
- * 添加 PSR-0 命名空间
- * @access private
- * @param array|string $prefix 空间前缀
- * @param array $paths 路径
- * @param bool $prepend 预先设置的优先级更高
- * @return void
- */
- private static function addPsr0($prefix, $paths, $prepend = false)
- {
- if (!$prefix) {
- self::$fallbackDirsPsr0 = $prepend ?
- array_merge((array) $paths, self::$fallbackDirsPsr0) :
- array_merge(self::$fallbackDirsPsr0, (array) $paths);
- } else {
- $first = $prefix[0];
-
- if (!isset(self::$prefixesPsr0[$first][$prefix])) {
- self::$prefixesPsr0[$first][$prefix] = (array) $paths;
- } else {
- self::$prefixesPsr0[$first][$prefix] = $prepend ?
- array_merge((array) $paths, self::$prefixesPsr0[$first][$prefix]) :
- array_merge(self::$prefixesPsr0[$first][$prefix], (array) $paths);
- }
- }
- }
-
- /**
- * 添加 PSR-4 空间
- * @access private
- * @param array|string $prefix 空间前缀
- * @param string $paths 路径
- * @param bool $prepend 预先设置的优先级更高
- * @return void
- */
- private static function addPsr4($prefix, $paths, $prepend = false)
- {
- if (!$prefix) {
- // Register directories for the root namespace.
- self::$fallbackDirsPsr4 = $prepend ?
- array_merge((array) $paths, self::$fallbackDirsPsr4) :
- array_merge(self::$fallbackDirsPsr4, (array) $paths);
-
- } elseif (!isset(self::$prefixDirsPsr4[$prefix])) {
- // Register directories for a new namespace.
- $length = strlen($prefix);
- if ('\\' !== $prefix[$length - 1]) {
- throw new \InvalidArgumentException(
- "A non-empty PSR-4 prefix must end with a namespace separator."
- );
- }
-
- self::$prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
- self::$prefixDirsPsr4[$prefix] = (array) $paths;
-
- } else {
- self::$prefixDirsPsr4[$prefix] = $prepend ?
- // Prepend directories for an already registered namespace.
- array_merge((array) $paths, self::$prefixDirsPsr4[$prefix]) :
- // Append directories for an already registered namespace.
- array_merge(self::$prefixDirsPsr4[$prefix], (array) $paths);
- }
- }
-
- /**
- * 注册命名空间别名
- * @access public
- * @param array|string $namespace 命名空间
- * @param string $original 源文件
- * @return void
- */
- public static function addNamespaceAlias($namespace, $original = '')
- {
- if (is_array($namespace)) {
- self::$namespaceAlias = array_merge(self::$namespaceAlias, $namespace);
- } else {
- self::$namespaceAlias[$namespace] = $original;
- }
- }
-
- /**
- * 注册自动加载机制
- * @access public
- * @param callable $autoload 自动加载处理方法
- * @return void
- */
- public static function register($autoload = null)
- {
- // 注册系统自动加载
- spl_autoload_register($autoload ?: 'think\\Loader::autoload', true, true);
-
- // Composer 自动加载支持
- if (is_dir(VENDOR_PATH . 'composer')) {
- if (PHP_VERSION_ID >= 50600 && is_file(VENDOR_PATH . 'composer' . DS . 'autoload_static.php')) {
- require VENDOR_PATH . 'composer' . DS . 'autoload_static.php';
-
- $declaredClass = get_declared_classes();
- $composerClass = array_pop($declaredClass);
-
- foreach (['prefixLengthsPsr4', 'prefixDirsPsr4', 'fallbackDirsPsr4', 'prefixesPsr0', 'fallbackDirsPsr0', 'classMap', 'files'] as $attr) {
- if (property_exists($composerClass, $attr)) {
- self::${$attr} = $composerClass::${$attr};
- }
- }
- } else {
- self::registerComposerLoader();
- }
- }
-
- // 注册命名空间定义
- self::addNamespace([
- 'think' => LIB_PATH . 'think' . DS,
- 'behavior' => LIB_PATH . 'behavior' . DS,
- 'traits' => LIB_PATH . 'traits' . DS,
- ]);
-
- // 加载类库映射文件
- if (is_file(RUNTIME_PATH . 'classmap' . EXT)) {
- self::addClassMap(__include_file(RUNTIME_PATH . 'classmap' . EXT));
- }
-
- self::loadComposerAutoloadFiles();
-
- // 自动加载 extend 目录
- self::$fallbackDirsPsr4[] = rtrim(EXTEND_PATH, DS);
- }
-
- /**
- * 注册 composer 自动加载
- * @access private
- * @return void
- */
- private static function registerComposerLoader()
- {
- if (is_file(VENDOR_PATH . 'composer/autoload_namespaces.php')) {
- $map = require VENDOR_PATH . 'composer/autoload_namespaces.php';
- foreach ($map as $namespace => $path) {
- self::addPsr0($namespace, $path);
- }
- }
-
- if (is_file(VENDOR_PATH . 'composer/autoload_psr4.php')) {
- $map = require VENDOR_PATH . 'composer/autoload_psr4.php';
- foreach ($map as $namespace => $path) {
- self::addPsr4($namespace, $path);
- }
- }
-
- if (is_file(VENDOR_PATH . 'composer/autoload_classmap.php')) {
- $classMap = require VENDOR_PATH . 'composer/autoload_classmap.php';
- if ($classMap) {
- self::addClassMap($classMap);
- }
- }
-
- if (is_file(VENDOR_PATH . 'composer/autoload_files.php')) {
- self::$files = require VENDOR_PATH . 'composer/autoload_files.php';
- }
- }
-
- // 加载composer autofile文件
- public static function loadComposerAutoloadFiles()
- {
- foreach (self::$files as $fileIdentifier => $file) {
- if (empty($GLOBALS['__composer_autoload_files'][$fileIdentifier])) {
- __require_file($file);
-
- $GLOBALS['__composer_autoload_files'][$fileIdentifier] = true;
- }
- }
- }
-
- /**
- * 导入所需的类库 同 Java 的 Import 本函数有缓存功能
- * @access public
- * @param string $class 类库命名空间字符串
- * @param string $baseUrl 起始路径
- * @param string $ext 导入的文件扩展名
- * @return bool
- */
- public static function import($class, $baseUrl = '', $ext = EXT)
- {
- static $_file = [];
- $key = $class . $baseUrl;
- $class = str_replace(['.', '#'], [DS, '.'], $class);
-
- if (isset($_file[$key])) {
- return true;
- }
-
- if (empty($baseUrl)) {
- list($name, $class) = explode(DS, $class, 2);
-
- if (isset(self::$prefixDirsPsr4[$name . '\\'])) {
- // 注册的命名空间
- $baseUrl = self::$prefixDirsPsr4[$name . '\\'];
- } elseif ('@' == $name) {
- // 加载当前模块应用类库
- $baseUrl = App::$modulePath;
- } elseif (is_dir(EXTEND_PATH . $name)) {
- $baseUrl = EXTEND_PATH . $name . DS;
- } else {
- // 加载其它模块的类库
- $baseUrl = APP_PATH . $name . DS;
- }
- } elseif (substr($baseUrl, -1) != DS) {
- $baseUrl .= DS;
- }
-
- // 如果类存在则导入类库文件
- if (is_array($baseUrl)) {
- foreach ($baseUrl as $path) {
- if (is_file($filename = $path . DS . $class . $ext)) {
- break;
- }
- }
- } else {
- $filename = $baseUrl . $class . $ext;
- }
-
- if (!empty($filename) &&
- is_file($filename) &&
- (!IS_WIN || pathinfo($filename, PATHINFO_FILENAME) == pathinfo(realpath($filename), PATHINFO_FILENAME))
- ) {
- __include_file($filename);
- $_file[$key] = true;
-
- return true;
- }
-
- return false;
- }
-
- /**
- * 实例化(分层)模型
- * @access public
- * @param string $name Model名称
- * @param string $layer 业务层名称
- * @param bool $appendSuffix 是否添加类名后缀
- * @param string $common 公共模块名
- * @return object
- * @throws ClassNotFoundException
- */
- public static function model($name = '', $layer = 'model', $appendSuffix = false, $common = 'common')
- {
- $uid = $name . $layer;
-
- if (isset(self::$instance[$uid])) {
- return self::$instance[$uid];
- }
-
- list($module, $class) = self::getModuleAndClass($name, $layer, $appendSuffix);
-
- if (class_exists($class)) {
- $model = new $class();
- } else {
- $class = str_replace('\\' . $module . '\\', '\\' . $common . '\\', $class);
-
- if (class_exists($class)) {
- $model = new $class();
- } else {
- throw new ClassNotFoundException('class not exists:' . $class, $class);
- }
- }
-
- return self::$instance[$uid] = $model;
- }
-
- /**
- * 实例化(分层)控制器 格式:[模块名/]控制器名
- * @access public
- * @param string $name 资源地址
- * @param string $layer 控制层名称
- * @param bool $appendSuffix 是否添加类名后缀
- * @param string $empty 空控制器名称
- * @return object
- * @throws ClassNotFoundException
- */
- public static function controller($name, $layer = 'controller', $appendSuffix = false, $empty = '')
- {
- list($module, $class) = self::getModuleAndClass($name, $layer, $appendSuffix);
-
- if (class_exists($class)) {
- return App::invokeClass($class);
- }
-
- if ($empty) {
- $emptyClass = self::parseClass($module, $layer, $empty, $appendSuffix);
-
- if (class_exists($emptyClass)) {
- return new $emptyClass(Request::instance());
- }
- }
-
- throw new ClassNotFoundException('class not exists:' . $class, $class);
- }
-
- /**
- * 实例化验证类 格式:[模块名/]验证器名
- * @access public
- * @param string $name 资源地址
- * @param string $layer 验证层名称
- * @param bool $appendSuffix 是否添加类名后缀
- * @param string $common 公共模块名
- * @return object|false
- * @throws ClassNotFoundException
- */
- public static function validate($name = '', $layer = 'validate', $appendSuffix = false, $common = 'common')
- {
- $name = $name ?: Config::get('default_validate');
-
- if (empty($name)) {
- return new Validate;
- }
-
- $uid = $name . $layer;
- if (isset(self::$instance[$uid])) {
- return self::$instance[$uid];
- }
-
- list($module, $class) = self::getModuleAndClass($name, $layer, $appendSuffix);
-
- if (class_exists($class)) {
- $validate = new $class;
- } else {
- $class = str_replace('\\' . $module . '\\', '\\' . $common . '\\', $class);
-
- if (class_exists($class)) {
- $validate = new $class;
- } else {
- throw new ClassNotFoundException('class not exists:' . $class, $class);
- }
- }
-
- return self::$instance[$uid] = $validate;
- }
-
- /**
- * 解析模块和类名
- * @access protected
- * @param string $name 资源地址
- * @param string $layer 验证层名称
- * @param bool $appendSuffix 是否添加类名后缀
- * @return array
- */
- protected static function getModuleAndClass($name, $layer, $appendSuffix)
- {
- if (false !== strpos($name, '\\')) {
- $module = Request::instance()->module();
- $class = $name;
- } else {
- if (strpos($name, '/')) {
- list($module, $name) = explode('/', $name, 2);
- } else {
- $module = Request::instance()->module();
- }
-
- $class = self::parseClass($module, $layer, $name, $appendSuffix);
- }
-
- return [$module, $class];
- }
-
- /**
- * 数据库初始化 并取得数据库类实例
- * @access public
- * @param mixed $config 数据库配置
- * @param bool|string $name 连接标识 true 强制重新连接
- * @return \think\db\Connection
- */
- public static function db($config = [], $name = false)
- {
- return Db::connect($config, $name);
- }
-
- /**
- * 远程调用模块的操作方法 参数格式 [模块/控制器/]操作
- * @access public
- * @param string $url 调用地址
- * @param string|array $vars 调用参数 支持字符串和数组
- * @param string $layer 要调用的控制层名称
- * @param bool $appendSuffix 是否添加类名后缀
- * @return mixed
- */
- public static function action($url, $vars = [], $layer = 'controller', $appendSuffix = false)
- {
- $info = pathinfo($url);
- $action = $info['basename'];
- $module = '.' != $info['dirname'] ? $info['dirname'] : Request::instance()->controller();
- $class = self::controller($module, $layer, $appendSuffix);
-
- if ($class) {
- if (is_scalar($vars)) {
- if (strpos($vars, '=')) {
- parse_str($vars, $vars);
- } else {
- $vars = [$vars];
- }
- }
-
- return App::invokeMethod([$class, $action . Config::get('action_suffix')], $vars);
- }
-
- return false;
- }
-
- /**
- * 字符串命名风格转换
- * type 0 将 Java 风格转换为 C 的风格 1 将 C 风格转换为 Java 的风格
- * @access public
- * @param string $name 字符串
- * @param integer $type 转换类型
- * @param bool $ucfirst 首字母是否大写(驼峰规则)
- * @return string
- */
- public static function parseName($name, $type = 0, $ucfirst = true)
- {
- if ($type) {
- $name = preg_replace_callback('/_([a-zA-Z])/', function ($match) {
- return strtoupper($match[1]);
- }, $name);
-
- return $ucfirst ? ucfirst($name) : lcfirst($name);
- }
-
- return strtolower(trim(preg_replace("/[A-Z]/", "_\\0", $name), "_"));
- }
-
- /**
- * 解析应用类的类名
- * @access public
- * @param string $module 模块名
- * @param string $layer 层名 controller model ...
- * @param string $name 类名
- * @param bool $appendSuffix 是否添加类名后缀
- * @return string
- */
- public static function parseClass($module, $layer, $name, $appendSuffix = false)
- {
-
- $array = explode('\\', str_replace(['/', '.'], '\\', $name));
- $class = self::parseName(array_pop($array), 1);
- $class = $class . (App::$suffix || $appendSuffix ? ucfirst($layer) : '');
- $path = $array ? implode('\\', $array) . '\\' : '';
-
- return App::$namespace . '\\' .
- ($module ? $module . '\\' : '') .
- $layer . '\\' . $path . $class;
- }
-
- /**
- * 初始化类的实例
- * @access public
- * @return void
- */
- public static function clearInstance()
- {
- self::$instance = [];
- }
- }
-
- // 作用范围隔离
-
- /**
- * include
- * @param string $file 文件路径
- * @return mixed
- */
- function __include_file($file)
- {
- return include $file;
- }
-
- /**
- * require
- * @param string $file 文件路径
- * @return mixed
- */
- function __require_file($file)
- {
- return require $file;
- }
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