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兼容composer自动加载

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This commit is contained in:
yunwuxin
2015-12-15 23:36:37 +08:00
parent ceeca5b841
commit e03bb00ed9
1 changed files with 103 additions and 1 deletions
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104
library/think/loader.php
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@@ -23,7 +23,11 @@ class Loader
{
// 检查是否定义classmap
if (isset(self::$map[$class])) {
include self::$map[$class];
if (self::$map[$class]) {
include self::$map[$class];
}
} elseif($file = self::findFileInComposer($class)){
include $file;
} else {
// 命名空间自动加载
$name = strtolower(strstr($class, '\\', true));
@@ -63,9 +67,107 @@ class Loader
// 注册自动加载机制
public static function register($autoload = '')
{
self::registerComposerLoader();
spl_autoload_register($autoload ? $autoload : ['think\\loader', 'autoload']);
}
// PSR-4
private static $prefixLengthsPsr4 = [];
private static $prefixDirsPsr4 = [];
// PSR-0
private static $prefixesPsr0 = [];
// 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;
}
/**
* 导入所需的类库 同java的Import 本函数有缓存功能
* @param string $class 类库命名空间字符串