1 files changed, 96 insertions, 0 deletions
diff --git a/Http/ParameterBagUtils.php b/Http/ParameterBagUtils.php
new file mode 100644
index 0000000..eed5421
--- /dev/null
+++ b/Http/ParameterBagUtils.php
@@ -0,0 +1,96 @@
+<?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\Security\Http;
+
+use Symfony\Component\HttpFoundation\ParameterBag;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\PropertyAccess\Exception\AccessException;
+use Symfony\Component\PropertyAccess\Exception\InvalidArgumentException;
+use Symfony\Component\PropertyAccess\PropertyAccess;
+
+/**
+ * @internal
+ */
+final class ParameterBagUtils
+{
+    private static $propertyAccessor;
+
+    /**
+     * Returns a "parameter" value.
+     *
+     * Paths like foo[bar] will be evaluated to find deeper items in nested data structures.
+     *
+     * @param ParameterBag $parameters The parameter bag
+     * @param string       $path       The key
+     *
+     * @return mixed
+     *
+     * @throws InvalidArgumentException when the given path is malformed
+     */
+    public static function getParameterBagValue(ParameterBag $parameters, $path)
+    {
+        if (false === $pos = strpos($path, '[')) {
+            return $parameters->get($path);
+        }
+
+        $root = substr($path, 0, $pos);
+
+        if (null === $value = $parameters->get($root)) {
+            return;
+        }
+
+        if (null === self::$propertyAccessor) {
+            self::$propertyAccessor = PropertyAccess::createPropertyAccessor();
+        }
+
+        try {
+            return self::$propertyAccessor->getValue($value, substr($path, $pos));
+        } catch (AccessException $e) {
+            return;
+        }
+    }
+
+    /**
+     * Returns a request "parameter" value.
+     *
+     * Paths like foo[bar] will be evaluated to find deeper items in nested data structures.
+     *
+     * @param Request $request The request
+     * @param string  $path    The key
+     *
+     * @return mixed
+     *
+     * @throws InvalidArgumentException when the given path is malformed
+     */
+    public static function getRequestParameterValue(Request $request, $path)
+    {
+        if (false === $pos = strpos($path, '[')) {
+            return $request->get($path);
+        }
+
+        $root = substr($path, 0, $pos);
+
+        if (null === $value = $request->get($root)) {
+            return;
+        }
+
+        if (null === self::$propertyAccessor) {
+            self::$propertyAccessor = PropertyAccess::createPropertyAccessor();
+        }
+
+        try {
+            return self::$propertyAccessor->getValue($value, substr($path, $pos));
+        } catch (AccessException $e) {
+            return;
+        }
+    }
+}