Merge branch '2.7' into 2.8

* 2.7:
  [Form] DateTimeToLocalizedStringTransformer does not use TZ when using only date
  [Validator] Fix caching of constraints derived from non-serializable parents
  [TwigBundle] Fix bug where namespaced paths don't take parent bundles in account
  [FrameworkBundle] Fix relative paths used as cache keys
  respect groups when merging constraints
  fix IPv6 address handling in server commands

Author: nicolas-grekas

Command/ServerCommand.php

@@ -54,7 +54,9 @@ protected function isOtherServerProcessRunning($address)
             return true;
         }
 
-        list($hostname, $port) = explode(':', $address);
+        $pos = strrpos($address, ':');
+        $hostname = substr($address, 0, $pos);
+        $port = substr($address, $pos + 1);
 
         $fp = @fsockopen($hostname, $port, $errno, $errstr, 5);
 

Templating/Loader/TemplateLocator.php

@@ -24,6 +24,8 @@ class TemplateLocator implements FileLocatorInterface
     protected $locator;
     protected $cache;
 
+    private $cacheHits = array();
+
     /**
      * Constructor.
      *
@@ -71,12 +73,15 @@ public function locate($template, $currentPath = null, $first = true)
 
         $key = $this->getCacheKey($template);
 
+        if (isset($this->cacheHits[$key])) {
+            return $this->cacheHits[$key];
+        }
         if (isset($this->cache[$key])) {
-            return $this->cache[$key];
+            return $this->cacheHits[$key] = realpath($this->cache[$key]) ?: $this->cache[$key];
         }
 
         try {
-            return $this->cache[$key] = $this->locator->locate($template->getPath(), $currentPath);
+            return $this->cacheHits[$key] = $this->locator->locate($template->getPath(), $currentPath);
         } catch (\InvalidArgumentException $e) {
             throw new \InvalidArgumentException(sprintf('Unable to find template "%s" : "%s".', $template, $e->getMessage()), 0, $e);
         }

Tests/Fixtures/templates.php

@@ -0,0 +1,5 @@
+<?php
+
+return array(
+    'bundle:controller:name.format.engine' => __DIR__.'/../Fixtures/Resources/views/this.is.a.template.format.engine',
+);

Tests/Templating/Loader/TemplateLocatorTest.php

@@ -35,6 +35,17 @@ public function testLocateATemplate()
         $this->assertEquals('/path/to/template', $locator->locate($template));
     }
 
+    public function testLocateATemplateFromCacheDir()
+    {
+        $template = new TemplateReference('bundle', 'controller', 'name', 'format', 'engine');
+
+        $fileLocator = $this->getFileLocator();
+
+        $locator = new TemplateLocator($fileLocator, __DIR__.'/../../Fixtures');
+
+        $this->assertEquals(realpath(__DIR__.'/../../Fixtures/Resources/views/this.is.a.template.format.engine'), $locator->locate($template));
+    }
+
     public function testThrowsExceptionWhenTemplateNotFound()
     {
         $template = new TemplateReference('bundle', 'controller', 'name', 'format', 'engine');