From 4f5b44bd3bd490309eb2ba7b44df4769816ba729 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nicolas=20L=C5=93uillet?= <nicolas.loeuillet@gmail.com>
Date: Sat, 3 Aug 2013 19:26:54 +0200
Subject: twig implementation

---
 .../ValueToDuplicatesTransformer.php               | 91 ++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 vendor/symfony/form/Symfony/Component/Form/Extension/Core/DataTransformer/ValueToDuplicatesTransformer.php

(limited to 'vendor/symfony/form/Symfony/Component/Form/Extension/Core/DataTransformer/ValueToDuplicatesTransformer.php')

diff --git a/vendor/symfony/form/Symfony/Component/Form/Extension/Core/DataTransformer/ValueToDuplicatesTransformer.php b/vendor/symfony/form/Symfony/Component/Form/Extension/Core/DataTransformer/ValueToDuplicatesTransformer.php
new file mode 100644
index 00000000..c34a0139
--- /dev/null
+++ b/vendor/symfony/form/Symfony/Component/Form/Extension/Core/DataTransformer/ValueToDuplicatesTransformer.php
@@ -0,0 +1,91 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Form\Extension\Core\DataTransformer;
+
+use Symfony\Component\Form\DataTransformerInterface;
+use Symfony\Component\Form\Exception\TransformationFailedException;
+
+/**
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class ValueToDuplicatesTransformer implements DataTransformerInterface
+{
+    private $keys;
+
+    public function __construct(array $keys)
+    {
+        $this->keys = $keys;
+    }
+
+    /**
+     * Duplicates the given value through the array.
+     *
+     * @param mixed $value The value
+     *
+     * @return array The array
+     */
+    public function transform($value)
+    {
+        $result = array();
+
+        foreach ($this->keys as $key) {
+            $result[$key] = $value;
+        }
+
+        return $result;
+    }
+
+    /**
+     * Extracts the duplicated value from an array.
+     *
+     * @param array $array
+     *
+     * @return mixed The value
+     *
+     * @throws TransformationFailedException If the given value is not an array or
+     *                                       if the given array can not be transformed.
+     */
+    public function reverseTransform($array)
+    {
+        if (!is_array($array)) {
+            throw new TransformationFailedException('Expected an array.');
+        }
+
+        $result = current($array);
+        $emptyKeys = array();
+
+        foreach ($this->keys as $key) {
+            if (!empty($array[$key])) {
+                if ($array[$key] !== $result) {
+                    throw new TransformationFailedException(
+                        'All values in the array should be the same'
+                    );
+                }
+            } else {
+                $emptyKeys[] = $key;
+            }
+        }
+
+        if (count($emptyKeys) > 0) {
+            if (count($emptyKeys) == count($this->keys)) {
+                // All keys empty
+                return null;
+            }
+
+            throw new TransformationFailedException(
+                 sprintf('The keys "%s" should not be empty', implode('", "', $emptyKeys)
+            ));
+        }
+
+        return $result;
+    }
+}
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