From e3566c27b7093647b4635a5c0ab6c6a67b78287d Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Thu, 24 Apr 2014 14:55:37 +0200
Subject: [PATCH] [Debug] fix #10771 DebugClassLoader can't load PSR4 libs

---
 .../Component/Debug/DebugClassLoader.php      | 47 ++++++++++---------
 .../Debug/Tests/DebugClassLoaderTest.php      | 18 ++++---
 2 files changed, 37 insertions(+), 28 deletions(-)

diff --git a/src/Symfony/Component/Debug/DebugClassLoader.php b/src/Symfony/Component/Debug/DebugClassLoader.php
index b7a10d60e5..2d768d37f8 100644
--- a/src/Symfony/Component/Debug/DebugClassLoader.php
+++ b/src/Symfony/Component/Debug/DebugClassLoader.php
@@ -176,32 +176,37 @@ class DebugClassLoader
                 $class = substr($class, 1);
             }
 
-            $i = 0;
-            $tail = DIRECTORY_SEPARATOR . str_replace('\\', DIRECTORY_SEPARATOR, $class).'.php';
-            $len = strlen($tail);
+            if (preg_match('#([/\\\\][a-zA-Z_\x7F-\xFF][a-zA-Z0-9_\x7F-\xFF]*)+\.(php|hh)$#', $file, $tail)) {
+                $tail = $tail[0];
+                $real = realpath($file);
 
-            do {
-                $tail = substr($tail, $i);
-                $len -= $i;
-
-                if (0 === substr_compare($file, $tail, -$len, $len, true)) {
-                    if (0 !== substr_compare($file, $tail, -$len, $len, false)) {
-                        if (method_exists($this->classLoader[0], 'getClassMap')) {
-                            $map = $this->classLoader[0]->getClassMap();
-                        } else {
-                            $map = array();
-                        }
-
-                        if (! isset($map[$class])) {
-                            throw new \RuntimeException(sprintf('Case mismatch between class and source file names: %s vs %s', $class, $file));
+                if (false !== stripos(PHP_OS, 'darwin')) {
+                    // realpath() on MacOSX doesn't normalize the case of characters,
+                    // let's do it ourselves. This is tricky.
+                    $cwd = getcwd();
+                    $basename = strrpos($real, '/');
+                    chdir(substr($real, 0, $basename));
+                    $basename = substr($real, $basename + 1);
+                    $real = getcwd().'/';
+                    $h = opendir('.');
+                    while (false !== $f = readdir($h)) {
+                        if (0 === strcasecmp($f, $basename)) {
+                            $real .= $f;
+                            break;
                         }
                     }
-
-                    break;
+                    closedir($h);
+                    chdir($cwd);
                 }
-            } while (false !== $i = strpos($tail, DIRECTORY_SEPARATOR, 1));
 
-            if (! $exists) {
+                if ( 0 === substr_compare($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, $real));
+                }
+            }
+
+            if (!$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));
                 }
diff --git a/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php b/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php
index fd98a5116e..d50c7adc75 100644
--- a/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php
+++ b/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php
@@ -27,7 +27,7 @@ class DebugClassLoaderTest extends \PHPUnit_Framework_TestCase
     {
         $this->errorReporting = error_reporting(E_ALL | E_STRICT);
         $this->loader = new ClassLoader();
-        spl_autoload_register(array($this->loader, 'loadClass'));
+        spl_autoload_register(array($this->loader, 'loadClass'), true, true);
         DebugClassLoader::enable();
     }
 
@@ -68,7 +68,7 @@ class DebugClassLoaderTest extends \PHPUnit_Framework_TestCase
 
         // See below: this will fail with parse error
         // but this should not be @-silenced.
-        @ class_exists(__NAMESPACE__.'\TestingUnsilencing', true);
+        @class_exists(__NAMESPACE__.'\TestingUnsilencing', true);
 
         ini_set('log_errors', $bak[0]);
         ini_set('display_errors', $bak[1]);
@@ -138,6 +138,10 @@ class DebugClassLoaderTest extends \PHPUnit_Framework_TestCase
      */
     public function testFileCaseMismatch()
     {
+        if (!file_exists(__DIR__.'/Fixtures/CaseMismatch.php')) {
+            $this->markTestSkipped('Can only be run on case insensitive filesystems');
+        }
+
         class_exists(__NAMESPACE__.'\Fixtures\CaseMismatch', true);
     }
 
@@ -168,7 +172,7 @@ class ClassLoader
 
     public function getClassMap()
     {
-        return array(__NAMESPACE__.'\Fixtures\NotPSR0bis' => __DIR__ . '/Fixtures/notPsr0Bis.php');
+        return array(__NAMESPACE__.'\Fixtures\NotPSR0bis' => __DIR__.'/Fixtures/notPsr0Bis.php');
     }
 
     public function findFile($class)
@@ -180,13 +184,13 @@ class ClassLoader
         } elseif (__NAMESPACE__.'\TestingCaseMismatch' === $class) {
             eval('namespace '.__NAMESPACE__.'; class TestingCaseMisMatch {}');
         } elseif (__NAMESPACE__.'\Fixtures\CaseMismatch' === $class) {
-            return __DIR__ . '/Fixtures/casemismatch.php';
+            return __DIR__.'/Fixtures/CaseMismatch.php';
         } elseif (__NAMESPACE__.'\Fixtures\Psr4CaseMismatch' === $class) {
-            return __DIR__ . '/Fixtures/psr4/Psr4CaseMismatch.php';
+            return __DIR__.'/Fixtures/psr4/Psr4CaseMismatch.php';
         } elseif (__NAMESPACE__.'\Fixtures\NotPSR0' === $class) {
-            return __DIR__ . '/Fixtures/reallyNotPsr0.php';
+            return __DIR__.'/Fixtures/reallyNotPsr0.php';
         } elseif (__NAMESPACE__.'\Fixtures\NotPSR0bis' === $class) {
-            return __DIR__ . '/Fixtures/notPsr0Bis.php';
+            return __DIR__.'/Fixtures/notPsr0Bis.php';
         }
     }
 }