改进框架入口文件

library/think/Loader.php

@@ -49,6 +49,11 @@ public static function autoload($class)
             } else {
                 return false;
             }
+        } elseif ($file = self::findFileInComposer($class)) {
+            // Composer自动加载
+            // 记录加载信息
+            APP_DEBUG && self::$load[] = $file;
+            include $file;
         } else {
             // 命名空间自动加载
             if (!strpos($class, '\\')) {
@@ -117,6 +122,95 @@ public static function register($autoload = '')
     {
         // 注册系统自动加载
         spl_autoload_register($autoload ? $autoload : 'think\\Loader::autoload');
+        // 注册composer自动加载
+        self::registerComposerLoader();
+    }
+
+    // 注册composer自动加载
+    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 => $path) {
+                self::$prefixesPsr0[$namespace[0]][$namespace] = (array) $path;
+            }
+        }
+
+        if (is_file(VENDOR_PATH . 'composer/autoload_psr4.php')) {
+            $map = require VENDOR_PATH . 'composer/autoload_psr4.php';
+            foreach ($map as $namespace => $path) {
+                $length = strlen($namespace);
+                if ('\\' !== $namespace[$length - 1]) {
+                    throw new \InvalidArgumentException("A non-empty PSR-4 prefix must end with a namespace separator.");
+                }
+                self::$prefixLengthsPsr4[$namespace[0]][$namespace] = $length;
+                self::$prefixDirsPsr4[$namespace]                   = (array) $path;
+            }
+        }
+
+        if (is_file(VENDOR_PATH . 'composer/autoload_classmap.php')) {
+            $classMap = require VENDOR_PATH . 'composer/autoload_classmap.php';
+            if ($classMap) {
+                self::addMap($classMap);
+            }
+        }
+
+        if (is_file(VENDOR_PATH . 'composer/autoload_files.php')) {
+            $includeFiles = require VENDOR_PATH . 'composer/autoload_files.php';
+            foreach ($includeFiles as $fileIdentifier => $file) {
+                self::composerRequire($fileIdentifier, $file);
+            }
+        }
+    }
+
+    private static function composerRequire($fileIdentifier, $file)
+    {
+        if (empty($GLOBALS['__composer_autoload_files'][$fileIdentifier])) {
+            require $file;
+            $GLOBALS['__composer_autoload_files'][$fileIdentifier] = true;
+        }
+    }
+
+    private static function findFileInComposer($class, $ext = '.php')
+    {
+        // PSR-4 lookup
+        $logicalPathPsr4 = strtr($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 $dir) {
+                        if (file_exists($file = $dir . DS . substr($logicalPathPsr4, $length))) {
+                            return $file;
+                        }
+                    }
+                }
+            }
+        }
+        // PSR-0 lookup
+        if (false !== $pos = strrpos($class, '\\')) {
+            // namespaced 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 $dir) {
+                        if (file_exists($file = $dir . DS . $logicalPathPsr0)) {
+                            return $file;
+                        }
+                    }
+                }
+            }
+        }
+        // Remember that this class does not exist.
+        return self::$map[$class] = false;
     }
 
     /**

start.php

@@ -11,9 +11,58 @@
 
 namespace think;
 
-// ThinkPHP 引导文件
-defined('THINK_AUTOLOAD') or define('THINK_AUTOLOAD', getenv('THINK_AUTOLOAD') !== '0');
+// ThinkPHP 实际引导文件
+// 加载基础文件
+require __DIR__ . '/base.php';
+require CORE_PATH . 'Loader.php';
 
-if (THINK_AUTOLOAD) {
-    require_once __DIR__ . '/think.php';
+// 加载环境变量配置文件
+if (is_file(ROOT_PATH . 'env' . EXT)) {
+    $env = include ROOT_PATH . 'env' . EXT;
+    foreach ($env as $key => $val) {
+        $name = ENV_PREFIX . $key;
+        putenv("$name=$val");
+    }
+}
+// 自动识别调试模式
+if (!defined('APP_DEBUG')) {
+    $debug = getenv(ENV_PREFIX . 'APP_DEBUG');
+    define('APP_DEBUG', $debug);
+}
+
+// 加载模式定义文件
+$mode = require MODE_PATH . APP_MODE . EXT;
+
+// 加载模式命名空间定义
+if (isset($mode['namespace'])) {
+    Loader::addNamespace($mode['namespace']);
+}
+
+// 注册自动加载
+Loader::register();
+
+// 加载模式别名定义
+if (isset($mode['alias'])) {
+    Loader::addMap($mode['alias']);
+}
+
+// 注册错误和异常处理机制
+Error::register();
+
+// 加载模式配置文件
+if (isset($mode['config'])) {
+    is_array($mode['config']) ? Config::set($mode['config']) : Config::load($mode['config']);
+}
+
+// 是否开启HOOK
+defined('APP_HOOK') or define('APP_HOOK', false);
+
+// 加载模式行为定义
+if (APP_HOOK && isset($mode['tags'])) {
+    Hook::import($mode['tags']);
+}
+
+// 是否自动运行
+if (APP_AUTO_RUN) {
+    App::run();
 }