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677 lines
21 KiB
677 lines
21 KiB
<?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) 2006~2018 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\exception\ClassNotFoundException;
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class Loader
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{
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/**
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* @var array 实例数组
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*/
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protected static $instance = [];
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/**
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* @var array 类名映射
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*/
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protected static $classMap = [];
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/**
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* @var array 命名空间别名
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*/
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protected static $namespaceAlias = [];
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/**
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* @var array PSR-4 命名空间前缀长度映射
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*/
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private static $prefixLengthsPsr4 = [];
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/**
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* @var array PSR-4 的加载目录
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*/
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private static $prefixDirsPsr4 = [];
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/**
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* @var array PSR-4 加载失败的回退目录
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*/
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private static $fallbackDirsPsr4 = [];
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/**
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* @var array PSR-0 命名空间前缀映射
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*/
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private static $prefixesPsr0 = [];
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/**
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* @var array PSR-0 加载失败的回退目录
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*/
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private static $fallbackDirsPsr0 = [];
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/**
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* @var array 需要加载的文件
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*/
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private static $files = [];
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/**
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* 自动加载
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* @access public
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* @param string $class 类名
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* @return bool
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*/
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public static function autoload($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, $class, false);
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}
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}
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}
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if ($file = self::findFile($class)) {
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// 非 Win 环境不严格区分大小写
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if (!IS_WIN || pathinfo($file, PATHINFO_FILENAME) == pathinfo(realpath($file), PATHINFO_FILENAME)) {
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__include_file($file);
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return true;
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}
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}
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return false;
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}
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/**
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* 查找文件
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* @access private
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* @param string $class 类名
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* @return bool|string
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*/
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private static function findFile($class)
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{
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// 类库映射
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if (!empty(self::$classMap[$class])) {
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return self::$classMap[$class];
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}
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// 查找 PSR-4
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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 $dir) {
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if (is_file($file = $dir . DS . substr($logicalPathPsr4, $length))) {
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return $file;
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}
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}
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}
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}
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}
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// 查找 PSR-4 fallback dirs
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foreach (self::$fallbackDirsPsr4 as $dir) {
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if (is_file($file = $dir . DS . $logicalPathPsr4)) {
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return $file;
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}
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}
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// 查找 PSR-0
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if (false !== $pos = strrpos($class, '\\')) {
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// namespace 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 $dir) {
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if (is_file($file = $dir . DS . $logicalPathPsr0)) {
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return $file;
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}
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}
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}
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}
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}
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// 查找 PSR-0 fallback dirs
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foreach (self::$fallbackDirsPsr0 as $dir) {
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if (is_file($file = $dir . DS . $logicalPathPsr0)) {
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return $file;
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}
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}
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// 找不到则设置映射为 false 并返回
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return self::$classMap[$class] = false;
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}
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/**
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* 注册 classmap
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* @access public
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* @param string|array $class 类名
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* @param string $map 映射
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* @return void
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*/
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public static function addClassMap($class, $map = '')
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{
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if (is_array($class)) {
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self::$classMap = array_merge(self::$classMap, $class);
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} else {
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self::$classMap[$class] = $map;
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}
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}
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/**
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* 注册命名空间
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* @access public
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* @param string|array $namespace 命名空间
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* @param string $path 路径
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* @return void
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*/
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public static function addNamespace($namespace, $path = '')
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{
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if (is_array($namespace)) {
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foreach ($namespace as $prefix => $paths) {
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self::addPsr4($prefix . '\\', rtrim($paths, DS), true);
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}
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} else {
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self::addPsr4($namespace . '\\', rtrim($path, DS), true);
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}
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}
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/**
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* 添加 PSR-0 命名空间
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* @access private
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* @param array|string $prefix 空间前缀
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* @param array $paths 路径
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* @param bool $prepend 预先设置的优先级更高
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* @return void
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*/
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private static function addPsr0($prefix, $paths, $prepend = false)
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{
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if (!$prefix) {
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self::$fallbackDirsPsr0 = $prepend ?
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array_merge((array) $paths, self::$fallbackDirsPsr0) :
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array_merge(self::$fallbackDirsPsr0, (array) $paths);
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} else {
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$first = $prefix[0];
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if (!isset(self::$prefixesPsr0[$first][$prefix])) {
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self::$prefixesPsr0[$first][$prefix] = (array) $paths;
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} else {
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self::$prefixesPsr0[$first][$prefix] = $prepend ?
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array_merge((array) $paths, self::$prefixesPsr0[$first][$prefix]) :
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array_merge(self::$prefixesPsr0[$first][$prefix], (array) $paths);
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}
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}
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}
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/**
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* 添加 PSR-4 空间
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* @access private
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* @param array|string $prefix 空间前缀
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* @param string $paths 路径
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* @param bool $prepend 预先设置的优先级更高
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* @return void
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*/
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private static function addPsr4($prefix, $paths, $prepend = false)
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{
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if (!$prefix) {
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// Register directories for the root namespace.
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self::$fallbackDirsPsr4 = $prepend ?
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array_merge((array) $paths, self::$fallbackDirsPsr4) :
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array_merge(self::$fallbackDirsPsr4, (array) $paths);
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} elseif (!isset(self::$prefixDirsPsr4[$prefix])) {
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// Register directories for a new namespace.
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$length = strlen($prefix);
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if ('\\' !== $prefix[$length - 1]) {
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throw new \InvalidArgumentException(
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"A non-empty PSR-4 prefix must end with a namespace separator."
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);
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}
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self::$prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
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self::$prefixDirsPsr4[$prefix] = (array) $paths;
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} else {
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self::$prefixDirsPsr4[$prefix] = $prepend ?
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// Prepend directories for an already registered namespace.
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array_merge((array) $paths, self::$prefixDirsPsr4[$prefix]) :
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// Append directories for an already registered namespace.
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array_merge(self::$prefixDirsPsr4[$prefix], (array) $paths);
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}
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}
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/**
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* 注册命名空间别名
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* @access public
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* @param array|string $namespace 命名空间
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* @param string $original 源文件
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* @return void
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*/
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public static function addNamespaceAlias($namespace, $original = '')
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{
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if (is_array($namespace)) {
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self::$namespaceAlias = array_merge(self::$namespaceAlias, $namespace);
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} else {
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self::$namespaceAlias[$namespace] = $original;
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}
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}
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/**
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* 注册自动加载机制
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* @access public
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* @param callable $autoload 自动加载处理方法
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* @return void
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*/
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public static function register($autoload = null)
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{
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// 注册系统自动加载
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spl_autoload_register($autoload ?: 'think\\Loader::autoload', true, true);
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// Composer 自动加载支持
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if (is_dir(VENDOR_PATH . 'composer')) {
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if (PHP_VERSION_ID >= 50600 && is_file(VENDOR_PATH . 'composer' . DS . 'autoload_static.php')) {
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require VENDOR_PATH . 'composer' . DS . 'autoload_static.php';
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$declaredClass = get_declared_classes();
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$composerClass = array_pop($declaredClass);
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foreach (['prefixLengthsPsr4', 'prefixDirsPsr4', 'fallbackDirsPsr4', 'prefixesPsr0', 'fallbackDirsPsr0', 'classMap', 'files'] as $attr) {
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if (property_exists($composerClass, $attr)) {
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self::${$attr} = $composerClass::${$attr};
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}
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}
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} else {
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self::registerComposerLoader();
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}
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}
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// 注册命名空间定义
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self::addNamespace([
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'think' => LIB_PATH . 'think' . DS,
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'behavior' => LIB_PATH . 'behavior' . DS,
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'traits' => LIB_PATH . 'traits' . DS,
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]);
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// 加载类库映射文件
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if (is_file(RUNTIME_PATH . 'classmap' . EXT)) {
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self::addClassMap(__include_file(RUNTIME_PATH . 'classmap' . EXT));
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}
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self::loadComposerAutoloadFiles();
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// 自动加载 extend 目录
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self::$fallbackDirsPsr4[] = rtrim(EXTEND_PATH, DS);
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}
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/**
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* 注册 composer 自动加载
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* @access private
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* @return void
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*/
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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 => $path) {
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self::addPsr0($namespace, $path);
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}
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}
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if (is_file(VENDOR_PATH . 'composer/autoload_psr4.php')) {
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$map = require VENDOR_PATH . 'composer/autoload_psr4.php';
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foreach ($map as $namespace => $path) {
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self::addPsr4($namespace, $path);
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}
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}
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if (is_file(VENDOR_PATH . 'composer/autoload_classmap.php')) {
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$classMap = require VENDOR_PATH . 'composer/autoload_classmap.php';
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if ($classMap) {
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self::addClassMap($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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self::$files = require VENDOR_PATH . 'composer/autoload_files.php';
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}
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}
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// 加载composer autofile文件
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public static function loadComposerAutoloadFiles()
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{
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foreach (self::$files as $fileIdentifier => $file) {
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if (empty($GLOBALS['__composer_autoload_files'][$fileIdentifier])) {
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__require_file($file);
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$GLOBALS['__composer_autoload_files'][$fileIdentifier] = true;
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}
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}
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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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* @access public
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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 $ext 导入的文件扩展名
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* @return bool
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*/
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public static function import($class, $baseUrl = '', $ext = EXT)
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{
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static $_file = [];
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$key = $class . $baseUrl;
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$class = str_replace(['.', '#'], [DS, '.'], $class);
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if (isset($_file[$key])) {
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return true;
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}
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if (empty($baseUrl)) {
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list($name, $class) = explode(DS, $class, 2);
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if (isset(self::$prefixDirsPsr4[$name . '\\'])) {
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// 注册的命名空间
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$baseUrl = self::$prefixDirsPsr4[$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 . $name . DS;
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} else {
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// 加载其它模块的类库
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$baseUrl = APP_PATH . $name . DS;
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}
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} elseif (substr($baseUrl, -1) != DS) {
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$baseUrl .= DS;
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}
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// 如果类存在则导入类库文件
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if (is_array($baseUrl)) {
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foreach ($baseUrl as $path) {
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if (is_file($filename = $path . DS . $class . $ext)) {
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break;
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}
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}
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} else {
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$filename = $baseUrl . $class . $ext;
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}
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if (!empty($filename) &&
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is_file($filename) &&
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(!IS_WIN || pathinfo($filename, PATHINFO_FILENAME) == pathinfo(realpath($filename), PATHINFO_FILENAME))
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) {
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__include_file($filename);
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$_file[$key] = 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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* @access public
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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, $common = 'common')
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{
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$uid = $name . $layer;
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if (isset(self::$instance[$uid])) {
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return self::$instance[$uid];
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}
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list($module, $class) = self::getModuleAndClass($name, $layer, $appendSuffix);
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if (class_exists($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, $class);
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}
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}
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return self::$instance[$uid] = $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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* @access public
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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 $empty 空控制器名称
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* @return object
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* @throws ClassNotFoundException
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*/
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public static function controller($name, $layer = 'controller', $appendSuffix = false, $empty = '')
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{
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list($module, $class) = self::getModuleAndClass($name, $layer, $appendSuffix);
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if (class_exists($class)) {
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return App::invokeClass($class);
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}
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if ($empty) {
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$emptyClass = self::parseClass($module, $layer, $empty, $appendSuffix);
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if (class_exists($emptyClass)) {
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return new $emptyClass(Request::instance());
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}
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}
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throw new ClassNotFoundException('class not exists:' . $class, $class);
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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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* @access public
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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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$uid = $name . $layer;
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if (isset(self::$instance[$uid])) {
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return self::$instance[$uid];
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}
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|
list($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;
|
|
}
|
|
|