diff -r 000000000000 -r 7f95f8617b0b vendor/symfony/src/Symfony/Component/HttpFoundation/ParameterBag.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/src/Symfony/Component/HttpFoundation/ParameterBag.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,245 @@
+<?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\HttpFoundation;
+
+/**
+ * ParameterBag is a container for key/value pairs.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @api
+ */
+class ParameterBag
+{
+    protected $parameters;
+
+    /**
+     * Constructor.
+     *
+     * @param array $parameters An array of parameters
+     *
+     * @api
+     */
+    public function __construct(array $parameters = array())
+    {
+        $this->parameters = $parameters;
+    }
+
+    /**
+     * Returns the parameters.
+     *
+     * @return array An array of parameters
+     *
+     * @api
+     */
+    public function all()
+    {
+        return $this->parameters;
+    }
+
+    /**
+     * Returns the parameter keys.
+     *
+     * @return array An array of parameter keys
+     *
+     * @api
+     */
+    public function keys()
+    {
+        return array_keys($this->parameters);
+    }
+
+    /**
+     * Replaces the current parameters by a new set.
+     *
+     * @param array $parameters An array of parameters
+     *
+     * @api
+     */
+    public function replace(array $parameters = array())
+    {
+        $this->parameters = $parameters;
+    }
+
+    /**
+     * Adds parameters.
+     *
+     * @param array $parameters An array of parameters
+     *
+     * @api
+     */
+    public function add(array $parameters = array())
+    {
+        $this->parameters = array_replace($this->parameters, $parameters);
+    }
+
+    /**
+     * Returns a parameter by name.
+     *
+     * @param string  $path    The key
+     * @param mixed   $default The default value
+     * @param boolean $deep
+     *
+     * @api
+     */
+    public function get($path, $default = null, $deep = false)
+    {
+        if (!$deep || false === $pos = strpos($path, '[')) {
+            return array_key_exists($path, $this->parameters) ? $this->parameters[$path] : $default;
+        }
+
+        $root = substr($path, 0, $pos);
+        if (!array_key_exists($root, $this->parameters)) {
+            return $default;
+        }
+
+        $value = $this->parameters[$root];
+        $currentKey = null;
+        for ($i=$pos,$c=strlen($path); $i<$c; $i++) {
+            $char = $path[$i];
+
+            if ('[' === $char) {
+                if (null !== $currentKey) {
+                    throw new \InvalidArgumentException(sprintf('Malformed path. Unexpected "[" at position %d.', $i));
+                }
+
+                $currentKey = '';
+            } else if (']' === $char) {
+                if (null === $currentKey) {
+                    throw new \InvalidArgumentException(sprintf('Malformed path. Unexpected "]" at position %d.', $i));
+                }
+
+                if (!is_array($value) || !array_key_exists($currentKey, $value)) {
+                    return $default;
+                }
+
+                $value = $value[$currentKey];
+                $currentKey = null;
+            } else {
+                if (null === $currentKey) {
+                    throw new \InvalidArgumentException(sprintf('Malformed path. Unexpected "%s" at position %d.', $char, $i));
+                }
+
+                $currentKey .= $char;
+            }
+        }
+
+        if (null !== $currentKey) {
+            throw new \InvalidArgumentException(sprintf('Malformed path. Path must end with "]".'));
+        }
+
+        return $value;
+    }
+
+    /**
+     * Sets a parameter by name.
+     *
+     * @param string $key   The key
+     * @param mixed  $value The value
+     *
+     * @api
+     */
+    public function set($key, $value)
+    {
+        $this->parameters[$key] = $value;
+    }
+
+    /**
+     * Returns true if the parameter is defined.
+     *
+     * @param string $key The key
+     *
+     * @return Boolean true if the parameter exists, false otherwise
+     *
+     * @api
+     */
+    public function has($key)
+    {
+        return array_key_exists($key, $this->parameters);
+    }
+
+    /**
+     * Removes a parameter.
+     *
+     * @param string $key The key
+     *
+     * @api
+     */
+    public function remove($key)
+    {
+        unset($this->parameters[$key]);
+    }
+
+    /**
+     * Returns the alphabetic characters of the parameter value.
+     *
+     * @param string  $key     The parameter key
+     * @param mixed   $default The default value
+     * @param boolean $deep
+     *
+     * @return string The filtered value
+     *
+     * @api
+     */
+    public function getAlpha($key, $default = '', $deep = false)
+    {
+        return preg_replace('/[^[:alpha:]]/', '', $this->get($key, $default, $deep));
+    }
+
+    /**
+     * Returns the alphabetic characters and digits of the parameter value.
+     *
+     * @param string  $key     The parameter key
+     * @param mixed   $default The default value
+     * @param boolean $deep
+     *
+     * @return string The filtered value
+     *
+     * @api
+     */
+    public function getAlnum($key, $default = '', $deep = false)
+    {
+        return preg_replace('/[^[:alnum:]]/', '', $this->get($key, $default, $deep));
+    }
+
+    /**
+     * Returns the digits of the parameter value.
+     *
+     * @param string  $key     The parameter key
+     * @param mixed   $default The default value
+     * @param boolean $deep
+     *
+     * @return string The filtered value
+     *
+     * @api
+     */
+    public function getDigits($key, $default = '', $deep = false)
+    {
+        return preg_replace('/[^[:digit:]]/', '', $this->get($key, $default, $deep));
+    }
+
+    /**
+     * Returns the parameter value converted to integer.
+     *
+     * @param string  $key     The parameter key
+     * @param mixed   $default The default value
+     * @param boolean $deep
+     *
+     * @return string The filtered value
+     *
+     * @api
+     */
+    public function getInt($key, $default = 0, $deep = false)
+    {
+        return (int) $this->get($key, $default, $deep);
+    }
+}