comparison vendor/symfony/debug/DebugClassLoader.php @ 0:4c8ae668cc8c

Initial import (non-working)

+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[e-mail]>
+ *
+ * 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 <[e-mail]>
+ * @author Christophe Coevoet <[e-mail]>
+ * @author Nicolas Grekas <[e-mail]>
+ */
+class DebugClassLoader
+{
+    private $classLoader;
+    private $isFinder;
+    private static $caseCheck;
+    private static $deprecated = array();
+    private static $php7Reserved = array('int', 'float', 'bool', 'string', 'true', 'false', 'null');
+    private static $darwinCache = array('/' => array('/', array()));
+
+    /**
+     * Constructor.
+     *
+     * @param callable $classLoader A class loader
+     */
+    public function __construct(callable $classLoader)
+    {
+        $this->classLoader = $classLoader;
+        $this->isFinder = is_array($classLoader) && method_exists($classLoader[0], 'findFile');
+
+        if (!isset(self::$caseCheck)) {
+            $file = file_exists(__FILE__) ? __FILE__ : rtrim(realpath('.'), DIRECTORY_SEPARATOR);
+            $i = strrpos($file, DIRECTORY_SEPARATOR);
+            $dir = substr($file, 0, 1 + $i);
+            $file = substr($file, 1 + $i);
+            $test = strtoupper($file) === $file ? strtolower($file) : strtoupper($file);
+            $test = realpath($dir.$test);
+
+            if (false === $test || false === $i) {
+                // filesystem is case sensitive
+                self::$caseCheck = 0;
+            } elseif (substr($test, -strlen($file)) === $file) {
+                // filesystem is case insensitive and realpath() normalizes the case of characters
+                self::$caseCheck = 1;
+            } elseif (false !== stripos(PHP_OS, 'darwin')) {
+                // on MacOSX, HFS+ is case insensitive but realpath() doesn't normalize the case of characters
+                self::$caseCheck = 2;
+            } else {
+                // filesystem case checks failed, fallback to disabling them
+                self::$caseCheck = 0;
+            }
+        }
+    }
+
+    /**
+     * Gets the wrapped class loader.
+     *
+     * @return callable The wrapped class loader
+     */
+    public function getClassLoader()
+    {
+        return $this->classLoader;
+    }
+
+    /**
+     * Wraps all autoloaders.
+     */
+    public static function enable()
+    {
+        // Ensures we don't hit https://bugs.php.net/42098
+        class_exists('Symfony\Component\Debug\ErrorHandler');
+        class_exists('Psr\Log\LogLevel');
+
+        if (!is_array($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);
+        }
+    }
+
+    /**
+     * 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_once $file;
+                }
+            } else {
+                call_user_func($this->classLoader, $class);
+                $file = false;
+            }
+        } finally {
+            ErrorHandler::unstackErrors();
+        }
+
+        $exists = class_exists($class, false) || interface_exists($class, false) || trait_exists($class, false);
+
+        if ($class && '\\' === $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;
+                    }
+                }
+                $parent = get_parent_class($class);
+
+                if (!$parent || strncmp($ns, $parent, $len)) {
+                    if ($parent && isset(self::$deprecated[$parent]) && strncmp($ns, $parent, $len)) {
+                        @trigger_error(sprintf('The %s class extends %s that is deprecated %s', $name, $parent, self::$deprecated[$parent]), E_USER_DEPRECATED);
+                    }
+
+                    $parentInterfaces = array();
+                    $deprecatedInterfaces = array();
+                    if ($parent) {
+                        foreach (class_implements($parent) as $interface) {
+                            $parentInterfaces[$interface] = 1;
+                        }
+                    }
+
+                    foreach ($refl->getInterfaceNames() as $interface) {
+                        if (isset(self::$deprecated[$interface]) && strncmp($ns, $interface, $len)) {
+                            $deprecatedInterfaces[] = $interface;
+                        }
+                        foreach (class_implements($interface) as $interface) {
+                            $parentInterfaces[$interface] = 1;
+                        }
+                    }
+
+                    foreach ($deprecatedInterfaces as $interface) {
+                        if (!isset($parentInterfaces[$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) {
+                $real = explode('\\', $class.strrchr($file, '.'));
+                $tail = explode(DIRECTORY_SEPARATOR, str_replace('/', DIRECTORY_SEPARATOR, $file));
+
+                $i = count($tail) - 1;
+                $j = count($real) - 1;
+
+                while (isset($tail[$i], $real[$j]) && $tail[$i] === $real[$j]) {
+                    --$i;
+                    --$j;
+                }
+
+                array_splice($tail, 0, $i + 1);
+            }
+            if (self::$caseCheck && $tail) {
+                $tail = DIRECTORY_SEPARATOR.implode(DIRECTORY_SEPARATOR, $tail);
+                $tailLen = strlen($tail);
+                $real = $refl->getFileName();
+
+                if (2 === self::$caseCheck) {
+                    // realpath() on MacOSX doesn't normalize the case of characters
+
+                    $i = 1 + strrpos($real, '/');
+                    $file = substr($real, $i);
+                    $real = substr($real, 0, $i);
+
+                    if (isset(self::$darwinCache[$real])) {
+                        $kDir = $real;
+                    } else {
+                        $kDir = strtolower($real);
+
+                        if (isset(self::$darwinCache[$kDir])) {
+                            $real = self::$darwinCache[$kDir][0];
+                        } else {
+                            $dir = getcwd();
+                            chdir($real);
+                            $real = getcwd().'/';
+                            chdir($dir);
+
+                            $dir = $real;
+                            $k = $kDir;
+                            $i = strlen($dir) - 1;
+                            while (!isset(self::$darwinCache[$k])) {
+                                self::$darwinCache[$k] = array($dir, array());
+                                self::$darwinCache[$dir] = &self::$darwinCache[$k];
+
+                                while ('/' !== $dir[--$i]) {
+                                }
+                                $k = substr($k, 0, ++$i);
+                                $dir = substr($dir, 0, $i--);
+                            }
+                        }
+                    }
+
+                    $dirFiles = self::$darwinCache[$kDir][1];
+
+                    if (isset($dirFiles[$file])) {
+                        $kFile = $file;
+                    } else {
+                        $kFile = strtolower($file);
+
+                        if (!isset($dirFiles[$kFile])) {
+                            foreach (scandir($real, 2) as $f) {
+                                if ('.' !== $f[0]) {
+                                    $dirFiles[$f] = $f;
+                                    if ($f === $file) {
+                                        $kFile = $k = $file;
+                                    } elseif ($f !== $k = strtolower($f)) {
+                                        $dirFiles[$k] = $f;
+                                    }
+                                }
+                            }
+                            self::$darwinCache[$kDir][1] = $dirFiles;
+                        }
+                    }
+
+                    $real .= $dirFiles[$kFile];
+                }
+
+                if (0 === substr_compare($real, $tail, -$tailLen, $tailLen, true)
+                  && 0 !== substr_compare($real, $tail, -$tailLen, $tailLen, false)
+                ) {
+                    throw new \RuntimeException(sprintf('Case mismatch between class and real file names: %s vs %s in %s', substr($tail, -$tailLen + 1), substr($real, -$tailLen + 1), substr($real, 0, -$tailLen + 1)));
+                }
+            }
+
+            return true;
+        }
+    }
+}