Viewing file:  NamespacedAttributeBag.php (3.8 KB) -rw-r--r--
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<?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\Session\Attribute;
/**
* This class provides structured storage of session attributes using
* a name spacing character in the key.
*
* @author Drak <drak@zikula.org>
*/
class NamespacedAttributeBag extends AttributeBag
{
/**
* Namespace character.
*
* @var string
*/
private $namespaceCharacter;
/**
* Constructor.
*
* @param string $storageKey Session storage key.
* @param string $namespaceCharacter Namespace character to use in keys.
*/
public function __construct($storageKey = '_sf2_attributes', $namespaceCharacter = '/')
{
$this->namespaceCharacter = $namespaceCharacter;
parent::__construct($storageKey);
}
/**
* {@inheritdoc}
*/
public function has($name)
{
$attributes = $this->resolveAttributePath($name);
$name = $this->resolveKey($name);
if (null === $attributes) {
return false;
}
return array_key_exists($name, $attributes);
}
/**
* {@inheritdoc}
*/
public function get($name, $default = null)
{
$attributes = $this->resolveAttributePath($name);
$name = $this->resolveKey($name);
if (null === $attributes) {
return $default;
}
return array_key_exists($name, $attributes) ? $attributes[$name] : $default;
}
/**
* {@inheritdoc}
*/
public function set($name, $value)
{
$attributes = & $this->resolveAttributePath($name, true);
$name = $this->resolveKey($name);
$attributes[$name] = $value;
}
/**
* {@inheritdoc}
*/
public function remove($name)
{
$retval = null;
$attributes = & $this->resolveAttributePath($name);
$name = $this->resolveKey($name);
if (null !== $attributes && array_key_exists($name, $attributes)) {
$retval = $attributes[$name];
unset($attributes[$name]);
}
return $retval;
}
/**
* Resolves a path in attributes property and returns it as a reference.
*
* This method allows structured namespacing of session attributes.
*
* @param string $name Key name
* @param boolean $writeContext Write context, default false
*
* @return array
*/
protected function &resolveAttributePath($name, $writeContext = false)
{
$array = & $this->attributes;
$name = (strpos($name, $this->namespaceCharacter) === 0) ? substr($name, 1) : $name;
// Check if there is anything to do, else return
if (!$name) {
return $array;
}
$parts = explode($this->namespaceCharacter, $name);
if (count($parts) < 2) {
if (!$writeContext) {
return $array;
}
$array[$parts[0]] = array();
return $array;
}
unset($parts[count($parts)-1]);
foreach ($parts as $part) {
if (null !== $array && !array_key_exists($part, $array)) {
$array[$part] = $writeContext ? array() : null;
}
$array = & $array[$part];
}
return $array;
}
/**
* Resolves the key from the name.
*
* This is the last part in a dot separated string.
*
* @param string $name
*
* @return string
*/
protected function resolveKey($name)
{
if (false !== $pos = strrpos($name, $this->namespaceCharacter)) {
$name = substr($name, $pos+1);
}
return $name;
}
}
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