From c24ea1bcc1ccc176edaed8c7f904584764d1b375 Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien.potencier@gmail.com>
Date: Sat, 14 Jul 2012 16:15:01 +0200
Subject: [PATCH] added Twig_Loader_Filesystem::prependPath()

---
 CHANGELOG                      |    2 +-
 doc/api.rst                    |    6 ++++++
 lib/Twig/Loader/Filesystem.php |   17 +++++++++++++++++
 3 files changed, 24 insertions(+), 1 deletions(-)

diff --git a/CHANGELOG b/CHANGELOG
index c7fc0a9..f47168a 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,6 +1,6 @@
 * 1.9.2 (2012-XX-XX)
 
- * n/a
+ * added Twig_Loader_Filesystem::prependPath()
 
 * 1.9.1 (2012-07-22)
 
diff --git a/doc/api.rst b/doc/api.rst
index 117bf27..30107d0 100644
--- a/doc/api.rst
+++ b/doc/api.rst
@@ -142,6 +142,12 @@ With such a configuration, Twig will first look for templates in
 ``$templateDir1`` and if they do not exist, it will fallback to look for them
 in the ``$templateDir2``.
 
+You can add or prepend paths via the ``addPath()`` and ``prependPath()``
+methods::
+
+    $loader->addPath($templateDir3);
+    $loader->prependPath($templateDir4);
+
 ``Twig_Loader_String``
 ......................
 
diff --git a/lib/Twig/Loader/Filesystem.php b/lib/Twig/Loader/Filesystem.php
index 18104a5..62043bd 100644
--- a/lib/Twig/Loader/Filesystem.php
+++ b/lib/Twig/Loader/Filesystem.php
@@ -75,6 +75,23 @@ class Twig_Loader_Filesystem implements Twig_LoaderInterface
     }
 
     /**
+     * Prepends a path where templates are stored.
+     *
+     * @param string $path A path where to look for templates
+     */
+    public function prependPath($path)
+    {
+        // invalidate the cache
+        $this->cache = array();
+
+        if (!is_dir($path)) {
+            throw new Twig_Error_Loader(sprintf('The "%s" directory does not exist.', $path));
+        }
+
+        array_unshift($this->paths, rtrim($path, '/\\'));
+    }
+
+    /**
      * Gets the source code of a template, given its name.
      *
      * @param string $name The name of the template to load
-- 
1.7.2.5