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 <?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) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 /**
  * @see Zend_Filter_Interface
  */
 // require_once 'Zend/Filter/Interface.php';
 
 /**
  * @category   Zend
  * @package    Zend_Filter
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Filter_Boolean implements Zend_Filter_Interface
 {
     const BOOLEAN      = 1;
     const INTEGER      = 2;
     const FLOAT        = 4;
     const STRING       = 8;
     const ZERO         = 16;
     const EMPTY_ARRAY  = 32;
     const NULL         = 64;
     const PHP          = 127;
     const FALSE_STRING = 128;
     const YES          = 256;
     const ALL          = 511;
 
     protected $_constants = array(
         self::BOOLEAN      => 'boolean',
         self::INTEGER      => 'integer',
         self::FLOAT        => 'float',
         self::STRING       => 'string',
         self::ZERO         => 'zero',
         self::EMPTY_ARRAY  => 'array',
         self::NULL         => 'null',
         self::PHP          => 'php',
         self::FALSE_STRING => 'false',
         self::YES          => 'yes',
         self::ALL          => 'all',
     );
 
     /**
      * Internal type to detect
      *
      * @var integer
      */
     protected $_type = self::PHP;
 
     /**
      * Internal locale
      *
      * @var array
      */
     protected $_locale = array('auto');
 
     /**
      * Internal mode
      *
      * @var boolean
      */
     protected $_casting = true;
 
     /**
      * Constructor
      *
      * @param string|array|Zend_Config $options OPTIONAL
      */
     public function __construct($options = null)
     {
         if ($options instanceof Zend_Config) {
             $options = $options->toArray();
         } elseif (!is_array($options)) {
             $options = func_get_args();
             $temp    = array();
             if (!empty($options)) {
                 $temp['type'] = array_shift($options);
             }
 
             if (!empty($options)) {
                 $temp['casting'] = array_shift($options);
             }
 
             if (!empty($options)) {
                 $temp['locale'] = array_shift($options);
             }
 
             $options = $temp;
         }
 
         if (array_key_exists('type', $options)) {
             $this->setType($options['type']);
         }
 
         if (array_key_exists('casting', $options)) {
             $this->setCasting($options['casting']);
         }
 
         if (array_key_exists('locale', $options)) {
             $this->setLocale($options['locale']);
         }
     }
 
     /**
      * Returns the set null types
      *
      * @return int
      */
     public function getType()
     {
         return $this->_type;
     }
 
     /**
      * Set the null types
      *
      * @param  integer|array $type
      * @throws Zend_Filter_Exception
      * @return Zend_Filter_Boolean
      */
     public function setType($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::ALL)) {
             // require_once 'Zend/Filter/Exception.php';
             throw new Zend_Filter_Exception('Unknown type');
         }
 
         $this->_type = $type;
         return $this;
     }
 
     /**
      * Returns the set locale
      *
      * @return array
      */
     public function getLocale()
     {
         return $this->_locale;
     }
 
     /**
      * Set the locales which are accepted
      *
      * @param  string|array|Zend_Locale $locale
      * @throws Zend_Filter_Exception
      * @return Zend_Filter_Boolean
      */
     public function setLocale($locale = null)
     {
         if (is_string($locale)) {
             $locale = array($locale);
         } elseif ($locale instanceof Zend_Locale) {
             $locale = array($locale->toString());
         } elseif (!is_array($locale)) {
             // require_once 'Zend/Filter/Exception.php';
             throw new Zend_Filter_Exception('Locale has to be string, array or an instance of Zend_Locale');
         }
 
         // require_once 'Zend/Locale.php';
         foreach ($locale as $single) {
             if (!Zend_Locale::isLocale($single)) {
                 // require_once 'Zend/Filter/Exception.php';
                 throw new Zend_Filter_Exception("Unknown locale '$single'");
             }
         }
 
         $this->_locale = $locale;
         return $this;
     }
 
     /**
      * Returns the casting option
      *
      * @return boolean
      */
     public function getCasting()
     {
         return $this->_casting;
     }
 
     /**
      * Set the working mode
      *
      * @param  boolean $locale When true this filter works like cast
      *                         When false it recognises only true and false
      *                         and all other values are returned as is
      * @throws Zend_Filter_Exception
      * @return Zend_Filter_Boolean
      */
     public function setCasting($casting = true)
     {
         $this->_casting = (boolean) $casting;
         return $this;
     }
 
     /**
      * Defined by Zend_Filter_Interface
      *
      * Returns a boolean representation of $value
      *
      * @param  string $value
      * @return string
      */
     public function filter($value)
     {
         $type    = $this->getType();
         $casting = $this->getCasting();
 
         // STRING YES (Localized)
         if ($type >= self::YES) {
             $type -= self::YES;
             if (is_string($value)) {
                 // require_once 'Zend/Locale.php';
                 $locales = $this->getLocale();
                 foreach ($locales as $locale) {
                     if ($this->_getLocalizedQuestion($value, false, $locale) === false) {
                         return false;
                     }
 
                     if (!$casting && ($this->_getLocalizedQuestion($value, true, $locale) === true)) {
                         return true;
                     }
                 }
             }
         }
 
         // STRING FALSE ('false')
         if ($type >= self::FALSE_STRING) {
             $type -= self::FALSE_STRING;
             if (is_string($value) && (strtolower($value) == 'false')) {
                 return false;
             }
 
             if ((!$casting) && is_string($value) && (strtolower($value) == 'true')) {
                 return true;
             }
         }
 
         // NULL (null)
         if ($type >= self::NULL) {
             $type -= self::NULL;
             if ($value === null) {
                 return false;
             }
         }
 
         // EMPTY_ARRAY (array())
         if ($type >= self::EMPTY_ARRAY) {
             $type -= self::EMPTY_ARRAY;
             if (is_array($value) && ($value == array())) {
                 return false;
             }
         }
 
         // ZERO ('0')
         if ($type >= self::ZERO) {
             $type -= self::ZERO;
             if (is_string($value) && ($value == '0')) {
                 return false;
             }
 
             if ((!$casting) && (is_string($value)) && ($value == '1')) {
                 return true;
             }
         }
 
         // STRING ('')
         if ($type >= self::STRING) {
             $type -= self::STRING;
             if (is_string($value) && ($value == '')) {
                 return false;
             }
         }
 
         // FLOAT (0.0)
         if ($type >= self::FLOAT) {
             $type -= self::FLOAT;
             if (is_float($value) && ($value == 0.0)) {
                 return false;
             }
 
             if ((!$casting) && is_float($value) && ($value == 1.0)) {
                 return true;
             }
         }
 
         // INTEGER (0)
         if ($type >= self::INTEGER) {
             $type -= self::INTEGER;
             if (is_int($value) && ($value == 0)) {
                 return false;
             }
 
             if ((!$casting) && is_int($value) && ($value == 1)) {
                 return true;
             }
         }
 
         // BOOLEAN (false)
         if ($type >= self::BOOLEAN) {
             $type -= self::BOOLEAN;
             if (is_bool($value)) {
                 return $value;
             }
         }
 
         if ($casting) {
             return true;
         }
 
         return $value;
     }
 
     /**
      * Determine the value of a localized string, and compare it to a given value
      *
      * @param  string $value
      * @param  boolean $yes
      * @param  array $locale
      * @return boolean
      */
     protected function _getLocalizedQuestion($value, $yes, $locale)
     {
         if ($yes == true) {
             $question = 'yes';
             $return   = true;
         } else {
             $question = 'no';
             $return   = false;
         }
         $str = Zend_Locale::getTranslation($question, 'question', $locale);
         $str = explode(':', $str);
         if (!empty($str)) {
             foreach($str as $no) {
                 if (($no == $value) || (strtolower($no) == strtolower($value))) {
                     return $return;
                 }
             }
         }
     }
 }