521 lines
19 KiB
PHP
521 lines
19 KiB
PHP
<?php
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// +----------------------------------------------------------------------
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// | ThinkPHP [ WE CAN DO IT JUST THINK ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2006~2016 http://thinkphp.cn All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
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// +----------------------------------------------------------------------
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// | Author: liu21st <liu21st@gmail.com>
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// +----------------------------------------------------------------------
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namespace think;
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use think\App;
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use think\exception\ClassNotFoundException;
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use think\Request;
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class Loader
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{
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protected static $instance = [];
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// 类名映射
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protected static $map = [];
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// 加载列表
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protected static $load = [];
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// 命名空间
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protected static $namespace = [];
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// 命名空间别名
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protected static $namespaceAlias = [];
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// PSR-4
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private static $prefixLengthsPsr4 = [];
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private static $prefixDirsPsr4 = [];
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// PSR-0
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private static $prefixesPsr0 = [];
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// Composer自动加载
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private static $composerLoader = false;
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// 自动加载
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public static function autoload($class)
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{
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// 检测命名空间别名
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if (!empty(self::$namespaceAlias)) {
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$namespace = dirname($class);
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if (isset(self::$namespaceAlias[$namespace])) {
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$original = self::$namespaceAlias[$namespace] . '\\' . basename($class);
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if (class_exists($original)) {
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return class_alias($original, $class, false);
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}
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}
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}
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if (!empty(self::$map[$class])) {
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// 类库映射
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include self::$map[$class];
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} elseif (self::$composerLoader && $file = self::findFileInComposer($class)) {
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// Composer自动加载
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include $file;
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} else {
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// 命名空间自动加载
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if (!strpos($class, '\\')) {
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return false;
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}
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// 解析命名空间
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list($name, $class) = explode('\\', $class, 2);
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if (isset(self::$namespace[$name])) {
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// 根命名空间
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$path = self::$namespace[$name];
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} elseif (is_dir(EXTEND_PATH . $name)) {
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// 扩展类库命名空间
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$path = EXTEND_PATH . $name . DS;
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} else {
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// 非根命名空间检测
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foreach (self::$namespace as $ns => $val) {
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if (strpos($ns, '\\') && 0 === strpos($name . '\\' . $class, $ns)) {
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$path = $val;
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$class = substr($name . $class, strlen($ns));
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break;
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}
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}
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if (!isset($path)) {
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return false;
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}
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}
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$filename = $path . str_replace('\\', DS, $class) . EXT;
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if (is_file($filename)) {
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// 开启调试模式Win环境严格区分大小写
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if (IS_WIN && false === strpos(realpath($filename), $class . EXT)) {
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return false;
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}
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include $filename;
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} else {
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return false;
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}
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}
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return true;
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}
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// 注册classmap
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public static function addMap($class, $map = '')
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{
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if (is_array($class)) {
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self::$map = array_merge(self::$map, $class);
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} else {
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self::$map[$class] = $map;
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}
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}
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// 注册命名空间
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public static function addNamespace($namespace, $path = '')
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{
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if (is_array($namespace)) {
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self::$namespace = array_merge(self::$namespace, $namespace);
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} else {
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self::$namespace[$namespace] = $path;
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}
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}
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// 注册命名空间别名
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public static function addNamespaceAlias($namespace, $original = '')
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{
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if (is_array($namespace)) {
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self::$namespaceAlias = array_merge(self::$namespace, $namespace);
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} else {
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self::$namespaceAlias[$namespace] = $original;
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}
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}
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// 注册自动加载机制
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public static function register($autoload = '')
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{
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// 注册系统自动加载
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spl_autoload_register($autoload ?: 'think\\Loader::autoload');
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if (is_dir(VENDOR_PATH . 'composer')) {
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// 注册Composer自动加载
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self::registerComposerLoader();
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self::$composerLoader = true;
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} elseif (is_file(VENDOR_PATH . 'think_autoload.php')) {
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// 读取Composer自动加载文件
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$autoload = include VENDOR_PATH . 'think_autoload.php';
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if (is_array($autoload)) {
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self::addMap($autoload);
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}
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} elseif (AUTO_SCAN_PACKAGE) {
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if (is_file(RUNTIME_PATH . 'class_namespace.php')) {
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self::addNamespace(include RUNTIME_PATH . 'class_namespace.php');
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if (is_file(RUNTIME_PATH . 'load_files.php')) {
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$files = include RUNTIME_PATH . 'load_files.php';
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foreach ($files as $file) {
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include $file;
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}
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}
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} elseif (is_dir(VENDOR_PATH)) {
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self::scanComposerPackage(VENDOR_PATH);
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}
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}
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}
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// 扫描composer package
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private static function scanComposerPackage($path)
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{
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// 自动扫描下载Composer安装类库
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$dirs = scandir($path, 1);
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$namespace = [];
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foreach ($dirs as $dir) {
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if ('.' != $dir && '..' != $dir && is_file($path . $dir . DS . 'composer.json')) {
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// 解析 package的composer.json 文件
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$namespace = array_merge($namespace, self::parseComposerPackage($path . $dir . DS));
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}
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}
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if (!empty($namespace)) {
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self::addNamespace($namespace);
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// 生成缓存
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file_put_contents(RUNTIME_PATH . 'class_namespace.php', "<?php\nreturn " . var_export($namespace, true) . ';');
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}
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if (!empty(self::$load)) {
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// 生成缓存
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file_put_contents(RUNTIME_PATH . 'load_files.php', "<?php\nreturn " . var_export(self::$load, true) . ';');
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}
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}
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// 解析Composer Package
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private static function parseComposerPackage($package)
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{
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$content = file_get_contents($package . 'composer.json');
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$result = json_decode($content, true);
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$namespace = [];
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if (!empty($result['autoload'])) {
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$autoload = $result['autoload'];
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if (isset($autoload['psr-0'])) {
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foreach ($autoload['psr-0'] as $ns => $path) {
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$namespace[rtrim($ns, '\\')] = realpath($package . $path . DS . str_replace('\\', DS, $ns)) . DS;
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}
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}
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if (isset($autoload['psr-4'])) {
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foreach ($autoload['psr-4'] as $ns => $path) {
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$namespace[rtrim($ns, '\\')] = realpath($package . $path) . DS;
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}
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}
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if (isset($autoload['files'])) {
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foreach ($autoload['files'] as $file) {
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self::$load[] = realpath($package . $file);
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require $package . $file;
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}
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}
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}
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return $namespace;
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}
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// 注册composer自动加载
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private static function registerComposerLoader()
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{
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if (is_file(VENDOR_PATH . 'composer/autoload_namespaces.php')) {
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$map = require VENDOR_PATH . 'composer/autoload_namespaces.php';
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foreach ($map as $namespace => $path) {
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self::$prefixesPsr0[$namespace[0]][$namespace] = (array) $path;
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}
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}
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if (is_file(VENDOR_PATH . 'composer/autoload_psr4.php')) {
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$map = require VENDOR_PATH . 'composer/autoload_psr4.php';
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foreach ($map as $namespace => $path) {
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$length = strlen($namespace);
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if ('\\' !== $namespace[$length - 1]) {
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throw new \InvalidArgumentException("PSR-4 error: A non-empty PSR-4 prefix must end with a namespace separator.");
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}
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self::$prefixLengthsPsr4[$namespace[0]][$namespace] = $length;
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self::$prefixDirsPsr4[$namespace] = (array) $path;
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}
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}
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if (is_file(VENDOR_PATH . 'composer/autoload_classmap.php')) {
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$classMap = require VENDOR_PATH . 'composer/autoload_classmap.php';
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if ($classMap) {
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self::addMap($classMap);
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}
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}
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if (is_file(VENDOR_PATH . 'composer/autoload_files.php')) {
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$includeFiles = require VENDOR_PATH . 'composer/autoload_files.php';
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foreach ($includeFiles as $fileIdentifier => $file) {
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self::composerRequire($fileIdentifier, $file);
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}
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}
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}
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private static function composerRequire($fileIdentifier, $file)
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{
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if (empty($GLOBALS['__composer_autoload_files'][$fileIdentifier])) {
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require $file;
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$GLOBALS['__composer_autoload_files'][$fileIdentifier] = true;
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}
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}
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private static function findFileInComposer($class, $ext = '.php')
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{
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// PSR-4 lookup
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$logicalPathPsr4 = strtr($class, '\\', DS) . $ext;
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$first = $class[0];
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if (isset(self::$prefixLengthsPsr4[$first])) {
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foreach (self::$prefixLengthsPsr4[$first] as $prefix => $length) {
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if (0 === strpos($class, $prefix)) {
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foreach (self::$prefixDirsPsr4[$prefix] as $dir) {
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if (file_exists($file = $dir . DS . substr($logicalPathPsr4, $length))) {
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return $file;
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}
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}
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}
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}
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}
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// PSR-0 lookup
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if (false !== $pos = strrpos($class, '\\')) {
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// namespaced class name
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$logicalPathPsr0 = substr($logicalPathPsr4, 0, $pos + 1)
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. strtr(substr($logicalPathPsr4, $pos + 1), '_', DS);
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} else {
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// PEAR-like class name
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$logicalPathPsr0 = strtr($class, '_', DS) . $ext;
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}
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if (isset(self::$prefixesPsr0[$first])) {
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foreach (self::$prefixesPsr0[$first] as $prefix => $dirs) {
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if (0 === strpos($class, $prefix)) {
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foreach ($dirs as $dir) {
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if (file_exists($file = $dir . DS . $logicalPathPsr0)) {
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return $file;
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}
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}
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}
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}
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}
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// Remember that this class does not exist.
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return self::$map[$class] = false;
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}
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/**
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* 导入所需的类库 同java的Import 本函数有缓存功能
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* @param string $class 类库命名空间字符串
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* @param string $baseUrl 起始路径
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* @param string $ext 导入的文件扩展名
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* @return boolean
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*/
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public static function import($class, $baseUrl = '', $ext = EXT)
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{
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static $_file = [];
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$class = str_replace(['.', '#'], [DS, '.'], $class);
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if (isset($_file[$class . $baseUrl])) {
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return true;
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}
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if (empty($baseUrl)) {
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list($name, $class) = explode(DS, $class, 2);
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if (isset(self::$namespace[$name])) {
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// 注册的命名空间
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$baseUrl = self::$namespace[$name];
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} elseif ('@' == $name) {
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//加载当前模块应用类库
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$baseUrl = App::$modulePath;
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} elseif (is_dir(EXTEND_PATH . $name)) {
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$baseUrl = EXTEND_PATH;
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} else {
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// 加载其它模块的类库
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$baseUrl = APP_PATH . $name . DS;
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}
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} elseif (substr($baseUrl, -1) != DS) {
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$baseUrl .= DS;
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}
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// 如果类存在 则导入类库文件
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$filename = $baseUrl . $class . $ext;
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if (is_file($filename)) {
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// 开启调试模式Win环境严格区分大小写
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if (IS_WIN && false === strpos(realpath($filename), $class . $ext)) {
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return false;
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}
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include $filename;
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$_file[$class . $baseUrl] = true;
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return true;
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}
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return false;
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}
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/**
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* 实例化（分层）模型
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* @param string $name Model名称
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* @param string $layer 业务层名称
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* @param bool $appendSuffix 是否添加类名后缀
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* @param string $common 公共模块名
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* @return Object
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* @throws ClassNotFoundException
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*/
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public static function model($name = '', $layer = 'model', $appendSuffix = false, $common = 'common')
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{
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if (isset(self::$instance[$name . $layer])) {
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return self::$instance[$name . $layer];
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}
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if (strpos($name, '/')) {
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list($module, $name) = explode('/', $name, 2);
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} else {
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$module = Request::instance()->module();
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}
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$class = self::parseClass($module, $layer, $name, $appendSuffix);
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if (class_exists($class)) {
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$model = new $class();
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} else {
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$class = str_replace('\\' . $module . '\\', '\\' . $common . '\\', $class);
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if (class_exists($class)) {
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$model = new $class();
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} else {
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throw new ClassNotFoundException('class not exists:' . $class, $class);
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}
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}
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self::$instance[$name . $layer] = $model;
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return $model;
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}
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/**
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* 实例化（分层）控制器 格式：[模块名/]控制器名
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* @param string $name 资源地址
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* @param string $layer 控制层名称
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* @param bool $appendSuffix 是否添加类名后缀
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* @param string $empty 空控制器名称
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* @return Object|false
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* @throws ClassNotFoundException
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*/
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public static function controller($name, $layer = 'controller', $appendSuffix = false, $empty = '')
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{
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if (strpos($name, '/')) {
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list($module, $name) = explode('/', $name);
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} else {
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$module = Request::instance()->module();
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}
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$class = self::parseClass($module, $layer, $name, $appendSuffix);
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if (class_exists($class)) {
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return new $class(Request::instance());
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} elseif ($empty && class_exists($emptyClass = self::parseClass($module, $layer, $empty, $appendSuffix))) {
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return new $emptyClass(Request::instance());
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} else {
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throw new ClassNotFoundException('class not exists:' . $class, $class);
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}
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}
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/**
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* 实例化验证类 格式：[模块名/]验证器名
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* @param string $name 资源地址
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* @param string $layer 验证层名称
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* @param bool $appendSuffix 是否添加类名后缀
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* @param string $common 公共模块名
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* @return Object|false
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* @throws ClassNotFoundException
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*/
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public static function validate($name = '', $layer = 'validate', $appendSuffix = false, $common = 'common')
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{
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$name = $name ?: Config::get('default_validate');
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if (empty($name)) {
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return new Validate;
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}
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if (isset(self::$instance[$name . $layer])) {
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return self::$instance[$name . $layer];
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}
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if (strpos($name, '/')) {
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list($module, $name) = explode('/', $name);
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} else {
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$module = Request::instance()->module();
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}
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$class = self::parseClass($module, $layer, $name, $appendSuffix);
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if (class_exists($class)) {
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$validate = new $class;
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} else {
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$class = str_replace('\\' . $module . '\\', '\\' . $common . '\\', $class);
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if (class_exists($class)) {
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$validate = new $class;
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} else {
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throw new ClassNotFoundException('class not exists:' . $class, $class);
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}
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}
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self::$instance[$name . $layer] = $validate;
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return $validate;
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}
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/**
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* 实例化数据库
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* @param mixed $config 数据库配置
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* @return object
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*/
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public static function db($config = [])
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{
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return Db::connect($config);
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}
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/**
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* 远程调用模块的操作方法 参数格式 [模块/控制器/]操作
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* @param string $url 调用地址
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* @param string|array $vars 调用参数 支持字符串和数组
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* @param string $layer 要调用的控制层名称
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* @param bool $appendSuffix 是否添加类名后缀
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* @return mixed
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*/
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public static function action($url, $vars = [], $layer = 'controller', $appendSuffix = false)
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{
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$info = pathinfo($url);
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$action = $info['basename'];
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$module = '.' != $info['dirname'] ? $info['dirname'] : Request::instance()->controller();
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$class = self::controller($module, $layer, $appendSuffix);
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if ($class) {
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if (is_scalar($vars)) {
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if (strpos($vars, '=')) {
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parse_str($vars, $vars);
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} else {
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$vars = [$vars];
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}
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}
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return App::invokeMethod([$class, $action . Config::get('action_suffix')], $vars);
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}
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}
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/**
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* 字符串命名风格转换
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* 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
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* @param string $name 字符串
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* @param integer $type 转换类型
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|
* @return string
|
|
*/
|
|
public static function parseName($name, $type = 0)
|
|
{
|
|
if ($type) {
|
|
return ucfirst(preg_replace_callback('/_([a-zA-Z])/', function ($match) {return strtoupper($match[1]);}, $name));
|
|
} else {
|
|
return strtolower(trim(preg_replace("/[A-Z]/", "_\\0", $name), "_"));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 解析应用类的类名
|
|
* @param string $module 模块名
|
|
* @param string $layer 层名 controller model ...
|
|
* @param string $name 类名
|
|
* @return string
|
|
*/
|
|
public static function parseClass($module, $layer, $name, $appendSuffix = false)
|
|
{
|
|
$name = str_replace(['/', '.'], '\\', $name);
|
|
$array = explode('\\', $name);
|
|
$class = self::parseName(array_pop($array), 1) . (App::$suffix || $appendSuffix ? ucfirst($layer) : '');
|
|
$path = $array ? implode('\\', $array) . '\\' : '';
|
|
return App::$namespace . '\\' . ($module ? $module . '\\' : '') . $layer . '\\' . $path . $class;
|
|
}
|
|
|
|
/**
|
|
* 初始化类的实例
|
|
* @return void
|
|
*/
|
|
public static function clearInstance()
|
|
{
|
|
self::$instance = [];
|
|
}
|
|
}
|