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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
{
private $namespaceCharacter;
/**
* @param string $storageKey Session storage key
* @param string $namespaceCharacter Namespace character to use in keys
*/
public function __construct(string $storageKey = '_sf2_attributes', string $namespaceCharacter = '/')
{
$this->namespaceCharacter = $namespaceCharacter;
parent::__construct($storageKey);
}
/**
* {@inheritdoc}
*/
public function has($name)
{
// reference mismatch: if fixed, re-introduced in array_key_exists; keep as it is
$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)
{
// reference mismatch: if fixed, re-introduced in array_key_exists; keep as it is
$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 bool $writeContext Write context, default false
*
* @return array
*/
protected function &resolveAttributePath($name, $writeContext = false)
{
$array = &$this->attributes;
$name = (0 === strpos($name, $this->namespaceCharacter)) ? substr($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]] = [];
return $array;
}
unset($parts[\count($parts) - 1]);
foreach ($parts as $part) {
if (null !== $array && !\array_key_exists($part, $array)) {
if (!$writeContext) {
$null = null;
return $null;
}
$array[$part] = [];
}
$array = &$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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