feature #641 Add new directory structure hook (romainneutron)

This PR was squashed before being merged into the 2.4-dev branch (closes #641).

Discussion
----------

Add new directory structure hook

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Fixed tickets | #584
| License       | MIT

This requires sensiolabs/SensioDistributionBundle#118 to be merged

Commits
-------

bffde32 Add new directory structure hook

Author: fabpot

app/SymfonyStandard/Composer.php

@@ -15,8 +15,8 @@
 
 class Composer
 {
-    public static function hookInstallAcmeDemoBundle(CommandEvent $event)
+    public static function hookRootPackageInstall(CommandEvent $event)
     {
-        $event->getComposer()->getEventDispatcher()->addSubscriber(new InstallAcmeDemoBundleSubscriber());
+        $event->getComposer()->getEventDispatcher()->addSubscriber(new RootPackageInstallSubscriber());
     }
 }

app/SymfonyStandard/InstallAcmeDemoBundleSubscriber.php renamed to app/SymfonyStandard/RootPackageInstallSubscriber.php

@@ -16,15 +16,25 @@
 use Composer\Script\CommandEvent;
 use Sensio\Bundle\DistributionBundle\Composer\ScriptHandler;
 
-class InstallAcmeDemoBundleSubscriber implements EventSubscriberInterface
+class RootPackageInstallSubscriber implements EventSubscriberInterface
 {
     public static function installAcmeDemoBundle(CommandEvent $event)
     {
         ScriptHandler::installAcmeDemoBundle($event);
     }
 
+    public static function setupNewDirectoryStructure(CommandEvent $event)
+    {
+        ScriptHandler::defineDirectoryStructure($event);
+    }
+
     public static function getSubscribedEvents()
     {
-        return array(ScriptEvents::POST_INSTALL_CMD => 'installAcmeDemoBundle');
+        return array(
+            ScriptEvents::POST_INSTALL_CMD => array(
+                array('setupNewDirectoryStructure', 512),
+                array('installAcmeDemoBundle', 0)
+            ),
+        );
     }
 }

composer.json

@@ -24,7 +24,7 @@
     },
     "scripts": {
         "post-root-package-install": [
-            "SymfonyStandard\\Composer::hookInstallAcmeDemoBundle"
+            "SymfonyStandard\\Composer::hookRootPackageInstall"
         ],
         "post-install-cmd": [
             "Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",