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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;
/**
* ParameterBag is a container for key/value pairs.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class ParameterBag implements \IteratorAggregate, \Countable
{
/**
* Parameter storage.
*
* @var array
*/
protected $parameters;
/**
* Constructor.
*
* @param array $parameters An array of parameters
*/
public function __construct(array $parameters = array())
{
$this->parameters = $parameters;
}
/**
* Returns the parameters.
*
* @return array An array of parameters
*/
public function all()
{
return $this->parameters;
}
/**
* Returns the parameter keys.
*
* @return array An array of parameter keys
*/
public function keys()
{
return array_keys($this->parameters);
}
/**
* Replaces the current parameters by a new set.
*
* @param array $parameters An array of parameters
*/
public function replace(array $parameters = array())
{
$this->parameters = $parameters;
}
/**
* Adds parameters.
*
* @param array $parameters An array of parameters
*/
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 if the parameter key does not exist
* @param bool $deep If true, a path like foo[bar] will find deeper items
*
* @return mixed
*
* @throws \InvalidArgumentException
*/
public function get($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 = '';
} elseif (']' === $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 $value The value
*/
public function set($key, $value)
{
$this->parameters[$key] = $value;
}
/**
* Returns true if the parameter is defined.
*
* @param string $key The key
*
* @return bool true if the parameter exists, false otherwise
*/
public function has($key)
{
return array_key_exists($key, $this->parameters);
}
/**
* Removes a parameter.
*
* @param string $key The key
*/
public function remove($key)
{
unset($this->parameters[$key]);
}
/**
* Returns the alphabetic characters of the parameter value.
*
* @param string $key The parameter key
* @param string $default The default value if the parameter key does not exist
* @param bool $deep If true, a path like foo[bar] will find deeper items
*
* @return string The filtered value
*/
public function getAlpha($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 string $default The default value if the parameter key does not exist
* @param bool $deep If true, a path like foo[bar] will find deeper items
*
* @return string The filtered value
*/
public function getAlnum($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 string $default The default value if the parameter key does not exist
* @param bool $deep If true, a path like foo[bar] will find deeper items
*
* @return string The filtered value
*/
public function getDigits($key, $default = '', $deep = false)
{
// we need to remove - and + because they're allowed in the filter
return str_replace(array('-', '+'), '', $this->filter($key, $default, $deep, FILTER_SANITIZE_NUMBER_INT));
}
/**
* Returns the parameter value converted to integer.
*
* @param string $key The parameter key
* @param int $default The default value if the parameter key does not exist
* @param bool $deep If true, a path like foo[bar] will find deeper items
*
* @return int The filtered value
*/
public function getInt($key, $default = 0, $deep = false)
{
return (int) $this->get($key, $default, $deep);
}
/**
* Filter key.
*
* @param string $key Key.
* @param mixed $default Default = null.
* @param bool $deep Default = false.
* @param int $filter FILTER_* constant.
* @param mixed $options Filter options.
*
* @see http://php.net/manual/en/function.filter-var.php
*
* @return mixed
*/
public function filter($key, $default = null, $deep = false, $filter = FILTER_DEFAULT, $options = array())
{
$value = $this->get($key, $default, $deep);
// Always turn $options into an array - this allows filter_var option shortcuts.
if (!is_array($options) && $options) {
$options = array('flags' => $options);
}
// Add a convenience check for arrays.
if (is_array($value) && !isset($options['flags'])) {
$options['flags'] = FILTER_REQUIRE_ARRAY;
}
return filter_var($value, $filter, $options);
}
/**
* Returns an iterator for parameters.
*
* @return \ArrayIterator An \ArrayIterator instance
*/
public function getIterator()
{
return new \ArrayIterator($this->parameters);
}
/**
* Returns the number of parameters.
*
* @return int The number of parameters
*/
public function count()
{
return count($this->parameters);
}
}
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