/vendor/zendframework/zendframework/library/Zend/Filter/Null.php
PHP | 182 lines | 112 code | 20 blank | 50 comment | 36 complexity | d4edaf74e24402faf879ccee77c2dca3 MD5 | raw file
- <?php
- /**
- * Zend Framework (http://framework.zend.com/)
- *
- * @link http://github.com/zendframework/zf2 for the canonical source repository
- * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
- * @license http://framework.zend.com/license/new-bsd New BSD License
- * @package Zend_Filter
- */
- namespace Zend\Filter;
- use Traversable;
- /**
- * @category Zend
- * @package Zend_Filter
- */
- class Null extends AbstractFilter
- {
- const TYPE_BOOLEAN = 1;
- const TYPE_INTEGER = 2;
- const TYPE_EMPTY_ARRAY = 4;
- const TYPE_STRING = 8;
- const TYPE_ZERO_STRING = 16;
- const TYPE_FLOAT = 32;
- const TYPE_ALL = 63;
- /**
- * @var array
- */
- protected $constants = array(
- self::TYPE_BOOLEAN => 'boolean',
- self::TYPE_INTEGER => 'integer',
- self::TYPE_EMPTY_ARRAY => 'array',
- self::TYPE_STRING => 'string',
- self::TYPE_ZERO_STRING => 'zero',
- self::TYPE_FLOAT => 'float',
- self::TYPE_ALL => 'all',
- );
- /**
- * @var array
- */
- protected $options = array(
- 'type' => self::TYPE_ALL,
- );
- /**
- * Constructor
- *
- * @param string|array|Traversable $typeOrOptions OPTIONAL
- */
- public function __construct($typeOrOptions = null)
- {
- if ($typeOrOptions !== null) {
- if ($typeOrOptions instanceof Traversable) {
- $typeOrOptions = iterator_to_array($typeOrOptions);
- }
- if (is_array($typeOrOptions)) {
- if (isset($typeOrOptions['type'])) {
- $this->setOptions($typeOrOptions);
- } else {
- $this->setType($typeOrOptions);
- }
- } else {
- $this->setType($typeOrOptions);
- }
- }
- }
- /**
- * Set boolean types
- *
- * @param integer|array $type
- * @throws Exception\InvalidArgumentException
- * @return Boolean
- */
- public function setType($type = null)
- {
- if (is_array($type)) {
- $detected = 0;
- foreach ($type as $value) {
- if (is_int($value)) {
- $detected += $value;
- } elseif (in_array($value, $this->constants)) {
- $detected += array_search($value, $this->constants);
- }
- }
- $type = $detected;
- } elseif (is_string($type) && in_array($type, $this->constants)) {
- $type = array_search($type, $this->constants);
- }
- if (!is_int($type) || ($type < 0) || ($type > self::TYPE_ALL)) {
- throw new Exception\InvalidArgumentException(sprintf(
- 'Unknown type value "%s" (%s)',
- $type,
- gettype($type)
- ));
- }
- $this->options['type'] = $type;
- return $this;
- }
- /**
- * Returns defined boolean types
- *
- * @return int
- */
- public function getType()
- {
- return $this->options['type'];
- }
- /**
- * Defined by Zend\Filter\FilterInterface
- *
- * 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 = $this->getType();
- // FLOAT (0.0)
- if ($type >= self::TYPE_FLOAT) {
- $type -= self::TYPE_FLOAT;
- if (is_float($value) && ($value == 0.0)) {
- return null;
- }
- }
- // STRING ZERO ('0')
- if ($type >= self::TYPE_ZERO_STRING) {
- $type -= self::TYPE_ZERO_STRING;
- if (is_string($value) && ($value == '0')) {
- return null;
- }
- }
- // STRING ('')
- if ($type >= self::TYPE_STRING) {
- $type -= self::TYPE_STRING;
- if (is_string($value) && ($value == '')) {
- return null;
- }
- }
- // EMPTY_ARRAY (array())
- if ($type >= self::TYPE_EMPTY_ARRAY) {
- $type -= self::TYPE_EMPTY_ARRAY;
- if (is_array($value) && ($value == array())) {
- return null;
- }
- }
- // INTEGER (0)
- if ($type >= self::TYPE_INTEGER) {
- $type -= self::TYPE_INTEGER;
- if (is_int($value) && ($value == 0)) {
- return null;
- }
- }
- // BOOLEAN (false)
- if ($type >= self::TYPE_BOOLEAN) {
- $type -= self::TYPE_BOOLEAN;
- if (is_bool($value) && ($value == false)) {
- return null;
- }
- }
- return $value;
- }
- }