571 lines
19 KiB
PHP
571 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) 2006~2017 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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protected static $instance = [];
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// 类名映射
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protected static $map = [];
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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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private static $fallbackDirsPsr4 = [];
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// PSR-0
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private static $prefixesPsr0 = [];
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private static $fallbackDirsPsr0 = [];
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// 自动加载的文件
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private static $autoloadFiles = [];
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// 自动加载
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public static function autoload($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, $class, false);
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}
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}
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}
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if ($file = self::findFile($class)) {
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// Win环境严格区分大小写
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if (IS_WIN && pathinfo($file, PATHINFO_FILENAME) != pathinfo(realpath($file), PATHINFO_FILENAME)) {
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return false;
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}
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__include_file($file);
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return true;
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}
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}
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/**
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* 查找文件
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* @param $class
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* @return bool
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*/
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private static function findFile($class)
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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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return self::$map[$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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// 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 $dir) {
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if (is_file($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 $file;
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}
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}
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return self::$map[$class] = false;
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}
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// 注册classmap
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public static function addClassMap($class, $map = '')
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{
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if (is_array($class)) {
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self::$map = array_merge(self::$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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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($path, DS), true);
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}
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}
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// 添加Ps0空间
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private static function addPsr0($prefix, $paths, $prepend = false)
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{
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if (!$prefix) {
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if ($prepend) {
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self::$fallbackDirsPsr0 = array_merge(
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(array) $paths,
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self::$fallbackDirsPsr0
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);
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} else {
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self::$fallbackDirsPsr0 = array_merge(
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self::$fallbackDirsPsr0,
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(array) $paths
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);
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}
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return;
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}
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$first = $prefix[0];
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if (!isset(self::$prefixesPsr0[$first][$prefix])) {
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self::$prefixesPsr0[$first][$prefix] = (array) $paths;
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return;
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}
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if ($prepend) {
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self::$prefixesPsr0[$first][$prefix] = array_merge(
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(array) $paths,
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self::$prefixesPsr0[$first][$prefix]
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);
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} else {
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self::$prefixesPsr0[$first][$prefix] = array_merge(
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self::$prefixesPsr0[$first][$prefix],
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(array) $paths
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);
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}
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}
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// 添加Psr4空间
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private static function addPsr4($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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if ($prepend) {
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self::$fallbackDirsPsr4 = array_merge(
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(array) $paths,
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self::$fallbackDirsPsr4
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);
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} else {
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self::$fallbackDirsPsr4 = array_merge(
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self::$fallbackDirsPsr4,
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(array) $paths
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);
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}
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} elseif (!isset(self::$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("A non-empty PSR-4 prefix must end with a namespace separator.");
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}
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self::$prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
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self::$prefixDirsPsr4[$prefix] = (array) $paths;
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} elseif ($prepend) {
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// Prepend directories for an already registered namespace.
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self::$prefixDirsPsr4[$prefix] = array_merge(
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(array) $paths,
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self::$prefixDirsPsr4[$prefix]
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);
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} else {
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// Append directories for an already registered namespace.
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self::$prefixDirsPsr4[$prefix] = array_merge(
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self::$prefixDirsPsr4[$prefix],
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(array) $paths
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);
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}
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}
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// 注册命名空间别名
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public static function addNamespaceAlias($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] = $original;
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}
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}
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// 注册自动加载机制
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public static function register($autoload = '')
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{
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// 注册系统自动加载
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spl_autoload_register($autoload ?: 'think\\Loader::autoload', true, true);
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// 注册命名空间定义
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self::addNamespace([
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'think' => LIB_PATH . 'think' . DS,
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'behavior' => LIB_PATH . 'behavior' . DS,
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'traits' => LIB_PATH . 'traits' . DS,
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]);
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// 加载类库映射文件
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if (is_file(RUNTIME_PATH . 'classmap' . EXT)) {
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self::addClassMap(__include_file(RUNTIME_PATH . 'classmap' . EXT));
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}
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// Composer自动加载支持
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if (is_dir(VENDOR_PATH . 'composer')) {
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self::registerComposerLoader();
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}
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// 自动加载extend目录
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self::$fallbackDirsPsr4[] = rtrim(EXTEND_PATH, DS);
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}
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// 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 => $path) {
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self::addPsr0($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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$includeFiles = require VENDOR_PATH . 'composer/autoload_files.php';
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foreach ($includeFiles as $fileIdentifier => $file) {
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if (empty(self::$autoloadFiles[$fileIdentifier])) {
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__require_file($file);
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self::$autoloadFiles[$fileIdentifier] = true;
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}
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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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* @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 $_file = [];
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$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 $path) {
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$filename = $path . DS . $class . $ext;
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if (is_file($filename)) {
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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) && is_file($filename)) {
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// 开启调试模式Win环境严格区分大小写
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if (IS_WIN && pathinfo($filename, PATHINFO_FILENAME) != pathinfo(realpath($filename), PATHINFO_FILENAME)) {
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return false;
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}
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__include_file($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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* @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, $common = 'common')
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{
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$guid = $name . $layer;
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if (isset(self::$instance[$guid])) {
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return self::$instance[$guid];
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}
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if (false !== strpos($name, '\\')) {
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$class = $name;
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$module = Request::instance()->module();
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} else {
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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, $appendSuffix);
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}
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if (class_exists($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[$guid] = $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 $empty 空控制器名称
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* @return object
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* @throws ClassNotFoundException
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*/
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public static function controller($name, $layer = 'controller', $appendSuffix = false, $empty = '')
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{
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if (false !== strpos($name, '\\')) {
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$class = $name;
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$module = Request::instance()->module();
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} else {
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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, $appendSuffix);
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}
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if (class_exists($class)) {
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return App::invokeClass($class);
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} elseif ($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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$guid = $name . $layer;
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if (isset(self::$instance[$guid])) {
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return self::$instance[$guid];
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}
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if (false !== strpos($name, '\\')) {
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$class = $name;
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$module = Request::instance()->module();
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} else {
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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, $appendSuffix);
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}
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if (class_exists($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[$guid] = $validate;
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return $validate;
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}
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/**
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* 数据库初始化 并取得数据库类实例
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* @param mixed $config 数据库配置
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* @param bool|string $name 连接标识 true 强制重新连接
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* @return \think\db\Connection
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*/
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public static function db($config = [], $name = false)
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{
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return Db::connect($config, $name);
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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);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
* @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);
|
|
} 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
|
|
* @param bool $appendSuffix
|
|
* @return string
|
|
*/
|
|
public static function parseClass($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 = [];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 作用范围隔离
|
|
*
|
|
* @param $file
|
|
* @return mixed
|
|
*/
|
|
function __include_file($file)
|
|
{
|
|
return include $file;
|
|
}
|
|
|
|
function __require_file($file)
|
|
{
|
|
return require $file;
|
|
}
|