www.gusucode.com > CKFinder 文件管理器PHP版 v3.0源码程序 > code/core/connector/php/vendor/symfony/debug/DebugClassLoader.php
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Debug;
/**
* Autoloader checking if the class is really defined in the file found.
*
* The ClassLoader will wrap all registered autoloaders
* and will throw an exception if a file is found but does
* not declare the class.
*
* @author Fabien Potencier <fabien@symfony.com>
* @author Christophe Coevoet <stof@notk.org>
* @author Nicolas Grekas <p@tchwork.com>
*
* @api
*/
class DebugClassLoader
{
private $classLoader;
private $isFinder;
private $wasFinder;
private static $caseCheck;
private static $deprecated = array();
private static $php7Reserved = array('int', 'float', 'bool', 'string', 'true', 'false', 'null');
/**
* Constructor.
*
* @param callable|object $classLoader Passing an object is @deprecated since version 2.5 and support for it will be removed in 3.0
*
* @api
*/
public function __construct($classLoader)
{
$this->wasFinder = is_object($classLoader) && method_exists($classLoader, 'findFile');
if ($this->wasFinder) {
@trigger_error('The '.__METHOD__.' method will no longer support receiving an object into its $classLoader argument in 3.0.', E_USER_DEPRECATED);
$this->classLoader = array($classLoader, 'loadClass');
$this->isFinder = true;
} else {
$this->classLoader = $classLoader;
$this->isFinder = is_array($classLoader) && method_exists($classLoader[0], 'findFile');
}
if (!isset(self::$caseCheck)) {
self::$caseCheck = false !== stripos(PHP_OS, 'win') ? (false !== stripos(PHP_OS, 'darwin') ? 2 : 1) : 0;
}
}
/**
* Gets the wrapped class loader.
*
* @return callable|object A class loader. Since version 2.5, returning an object is @deprecated and support for it will be removed in 3.0
*/
public function getClassLoader()
{
return $this->wasFinder ? $this->classLoader[0] : $this->classLoader;
}
/**
* Wraps all autoloaders.
*/
public static function enable()
{
// Ensures we don't hit https://bugs.php.net/42098
class_exists('Symfony\Component\Debug\ErrorHandler');
class_exists('Psr\Log\LogLevel');
if (!is_array($functions = spl_autoload_functions())) {
return;
}
foreach ($functions as $function) {
spl_autoload_unregister($function);
}
foreach ($functions as $function) {
if (!is_array($function) || !$function[0] instanceof self) {
$function = array(new static($function), 'loadClass');
}
spl_autoload_register($function);
}
}
/**
* Disables the wrapping.
*/
public static function disable()
{
if (!is_array($functions = spl_autoload_functions())) {
return;
}
foreach ($functions as $function) {
spl_autoload_unregister($function);
}
foreach ($functions as $function) {
if (is_array($function) && $function[0] instanceof self) {
$function = $function[0]->getClassLoader();
}
spl_autoload_register($function);
}
}
/**
* Finds a file by class name.
*
* @param string $class A class name to resolve to file
*
* @return string|null
*
* @deprecated since version 2.5, to be removed in 3.0.
*/
public function findFile($class)
{
@trigger_error('The '.__METHOD__.' method is deprecated since version 2.5 and will be removed in 3.0.', E_USER_DEPRECATED);
if ($this->wasFinder) {
return $this->classLoader[0]->findFile($class);
}
}
/**
* Loads the given class or interface.
*
* @param string $class The name of the class
*
* @return bool|null True, if loaded
*
* @throws \RuntimeException
*/
public function loadClass($class)
{
ErrorHandler::stackErrors();
try {
if ($this->isFinder) {
if ($file = $this->classLoader[0]->findFile($class)) {
require $file;
}
} else {
call_user_func($this->classLoader, $class);
$file = false;
}
} catch (\Exception $e) {
ErrorHandler::unstackErrors();
throw $e;
}
ErrorHandler::unstackErrors();
$exists = class_exists($class, false) || interface_exists($class, false) || (function_exists('trait_exists') && trait_exists($class, false));
if ('\\' === $class[0]) {
$class = substr($class, 1);
}
if ($exists) {
$refl = new \ReflectionClass($class);
$name = $refl->getName();
if ($name !== $class && 0 === strcasecmp($name, $class)) {
throw new \RuntimeException(sprintf('Case mismatch between loaded and declared class names: %s vs %s', $class, $name));
}
if (in_array(strtolower($refl->getShortName()), self::$php7Reserved)) {
@trigger_error(sprintf('%s uses a reserved class name (%s) that will break on PHP 7 and higher', $name, $refl->getShortName()), E_USER_DEPRECATED);
} elseif (preg_match('#\n \* @deprecated (.*?)\r?\n \*(?: @|/$)#s', $refl->getDocComment(), $notice)) {
self::$deprecated[$name] = preg_replace('#\s*\r?\n \* +#', ' ', $notice[1]);
} else {
if (2 > $len = 1 + (strpos($name, '\\', 1 + strpos($name, '\\')) ?: strpos($name, '_'))) {
$len = 0;
$ns = '';
} else {
switch ($ns = substr($name, 0, $len)) {
case 'Symfony\Bridge\\':
case 'Symfony\Bundle\\':
case 'Symfony\Component\\':
$ns = 'Symfony\\';
$len = strlen($ns);
break;
}
}
$parent = $refl->getParentClass();
if (!$parent || strncmp($ns, $parent->name, $len)) {
if ($parent && isset(self::$deprecated[$parent->name]) && strncmp($ns, $parent->name, $len)) {
@trigger_error(sprintf('The %s class extends %s that is deprecated %s', $name, $parent->name, self::$deprecated[$parent->name]), E_USER_DEPRECATED);
}
foreach ($refl->getInterfaceNames() as $interface) {
if (isset(self::$deprecated[$interface]) && strncmp($ns, $interface, $len) && !($parent && $parent->implementsInterface($interface))) {
@trigger_error(sprintf('The %s %s %s that is deprecated %s', $name, $refl->isInterface() ? 'interface extends' : 'class implements', $interface, self::$deprecated[$interface]), E_USER_DEPRECATED);
}
}
}
}
}
if ($file) {
if (!$exists) {
if (false !== strpos($class, '/')) {
throw new \RuntimeException(sprintf('Trying to autoload a class with an invalid name "%s". Be careful that the namespace separator is "\" in PHP, not "/".', $class));
}
throw new \RuntimeException(sprintf('The autoloader expected class "%s" to be defined in file "%s". The file was found but the class was not in it, the class name or namespace probably has a typo.', $class, $file));
}
if (self::$caseCheck && preg_match('#([/\\\\][a-zA-Z_\x7F-\xFF][a-zA-Z0-9_\x7F-\xFF]*)+\.(php|hh)$#D', $file, $tail)) {
$tail = $tail[0];
$real = $refl->getFilename();
if (2 === self::$caseCheck) {
// realpath() on MacOSX doesn't normalize the case of characters
$cwd = getcwd();
$basename = strrpos($real, '/');
chdir(substr($real, 0, $basename));
$basename = substr($real, $basename + 1);
// glob() patterns are case-sensitive even if the underlying fs is not
if (!in_array($basename, glob($basename.'*', GLOB_NOSORT), true)) {
$real = getcwd().'/';
$h = opendir('.');
while (false !== $f = readdir($h)) {
if (0 === strcasecmp($f, $basename)) {
$real .= $f;
break;
}
}
closedir($h);
}
chdir($cwd);
}
if (0 === substr_compare($real, $tail, -strlen($tail), strlen($tail), true)
&& 0 !== substr_compare($real, $tail, -strlen($tail), strlen($tail), false)
) {
throw new \RuntimeException(sprintf('Case mismatch between class and source file names: %s vs %s', $class, $real));
}
}
return true;
}
}
}