/src/application/libraries/Zend/Filter/Null.php
PHP | 183 lines | 101 code | 18 blank | 64 comment | 38 complexity | a5fb19b0b1fb54acea3384a25814502c MD5 | raw file
- <?php
- /**
- * Zend Framework
- *
- * LICENSE
- *
- * This source file is subject to the new BSD license that is bundled
- * with this package in the file LICENSE.txt.
- * It is also available through the world-wide-web at this URL:
- * http://framework.zend.com/license/new-bsd
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@zend.com so we can send you a copy immediately.
- *
- * @category Zend
- * @package Zend_Filter
- * @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
- * @license http://framework.zend.com/license/new-bsd New BSD License
- * @version $Id: Null.php 23775 2011-03-01 17:25:24Z ralph $
- */
- /**
- * @see Zend_Filter_Interface
- */
- require_once 'Zend/Filter/Interface.php';
- /**
- * @category Zend
- * @package Zend_Filter
- * @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
- * @license http://framework.zend.com/license/new-bsd New BSD License
- */
- class Zend_Filter_Null implements Zend_Filter_Interface
- {
- const BOOLEAN = 1;
- const INTEGER = 2;
- const EMPTY_ARRAY = 4;
- const STRING = 8;
- const ZERO = 16;
- const ALL = 31;
- protected $_constants = array(
- self::BOOLEAN => 'boolean',
- self::INTEGER => 'integer',
- self::EMPTY_ARRAY => 'array',
- self::STRING => 'string',
- self::ZERO => 'zero',
- self::ALL => 'all'
- );
- /**
- * Internal type to detect
- *
- * @var integer
- */
- protected $_type = self::ALL;
- /**
- * Constructor
- *
- * @param string|array|Zend_Config $options OPTIONAL
- */
- public function __construct($options = null)
- {
- if ($options instanceof Zend_Config) {
- $options = $options->toArray();
- } else if (!is_array($options)) {
- $options = func_get_args();
- $temp = array();
- if (!empty($options)) {
- $temp = array_shift($options);
- }
- $options = $temp;
- } else if (is_array($options) && array_key_exists('type', $options)) {
- $options = $options['type'];
- }
- if (!empty($options)) {
- $this->setType($options);
- }
- }
- /**
- * Returns the set null types
- *
- * @return array
- */
- public function getType()
- {
- return $this->_type;
- }
- /**
- * Set the null types
- *
- * @param integer|array $type
- * @throws Zend_Filter_Exception
- * @return Zend_Filter_Null
- */
- public function setType($type = null)
- {
- if (is_array($type)) {
- $detected = 0;
- foreach($type as $value) {
- if (is_int($value)) {
- $detected += $value;
- } else if (in_array($value, $this->_constants)) {
- $detected += array_search($value, $this->_constants);
- }
- }
- $type = $detected;
- } else if (is_string($type)) {
- if (in_array($type, $this->_constants)) {
- $type = array_search($type, $this->_constants);
- }
- }
- if (!is_int($type) || ($type < 0) || ($type > self::ALL)) {
- require_once 'Zend/Filter/Exception.php';
- throw new Zend_Filter_Exception('Unknown type');
- }
- $this->_type = $type;
- return $this;
- }
- /**
- * Defined by Zend_Filter_Interface
- *
- * Returns null representation of $value, if value is empty and matches
- * types that should be considered null.
- *
- * @param string $value
- * @return string
- */
- public function filter($value)
- {
- $type = $this->getType();
- // STRING ZERO ('0')
- if ($type >= self::ZERO) {
- $type -= self::ZERO;
- if (is_string($value) && ($value == '0')) {
- return null;
- }
- }
- // STRING ('')
- if ($type >= self::STRING) {
- $type -= self::STRING;
- if (is_string($value) && ($value == '')) {
- return null;
- }
- }
- // EMPTY_ARRAY (array())
- if ($type >= self::EMPTY_ARRAY) {
- $type -= self::EMPTY_ARRAY;
- if (is_array($value) && ($value == array())) {
- return null;
- }
- }
- // INTEGER (0)
- if ($type >= self::INTEGER) {
- $type -= self::INTEGER;
- if (is_int($value) && ($value == 0)) {
- return null;
- }
- }
- // BOOLEAN (false)
- if ($type >= self::BOOLEAN) {
- $type -= self::BOOLEAN;
- if (is_bool($value) && ($value == false)) {
- return null;
- }
- }
- return $value;
- }
- }