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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_Validate
  * @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_Validate_Abstract
  */
 // require_once 'Zend/Validate/Abstract.php';
 
 /**
  * @category   Zend
  * @package    Zend_Validate
  * @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_Validate_StringLength extends Zend_Validate_Abstract
 {
     const INVALID   = 'stringLengthInvalid';
     const TOO_SHORT = 'stringLengthTooShort';
     const TOO_LONG  = 'stringLengthTooLong';
 
     /**
      * @var array
      */
     protected $_messageTemplates = array(
         self::INVALID   => "Invalid type given. String expected",
         self::TOO_SHORT => "'%value%' is less than %min% characters long",
         self::TOO_LONG  => "'%value%' is more than %max% characters long",
     );
 
     /**
      * @var array
      */
     protected $_messageVariables = array(
         'min' => '_min',
         'max' => '_max'
     );
 
     /**
      * Minimum length
      *
      * @var integer
      */
     protected $_min;
 
     /**
      * Maximum length
      *
      * If null, there is no maximum length
      *
      * @var integer|null
      */
     protected $_max;
 
     /**
      * Encoding to use
      *
      * @var string|null
      */
     protected $_encoding;
 
     /**
      * Sets validator options
      *
      * @param integer|array|Zend_Config $options
      */
     public function __construct($options = array())
     {
         if ($options instanceof Zend_Config) {
             $options = $options->toArray();
         } else if (!is_array($options)) {
             $options     = func_get_args();
             $temp['min'] = array_shift($options);
             if (!empty($options)) {
                 $temp['max'] = array_shift($options);
             }
 
             if (!empty($options)) {
                 $temp['encoding'] = array_shift($options);
             }
 
             $options = $temp;
         }
 
         if (!array_key_exists('min', $options)) {
             $options['min'] = 0;
         }
 
         $this->setMin($options['min']);
         if (array_key_exists('max', $options)) {
             $this->setMax($options['max']);
         }
 
         if (array_key_exists('encoding', $options)) {
             $this->setEncoding($options['encoding']);
         }
     }
 
     /**
      * Returns the min option
      *
      * @return integer
      */
     public function getMin()
     {
         return $this->_min;
     }
 
     /**
      * Sets the min option
      *
      * @param  integer $min
      * @throws Zend_Validate_Exception
      * @return Zend_Validate_StringLength Provides a fluent interface
      */
     public function setMin($min)
     {
         if (null !== $this->_max && $min > $this->_max) {
             /**
              * @see Zend_Validate_Exception
              */
             // require_once 'Zend/Validate/Exception.php';
             throw new Zend_Validate_Exception("The minimum must be less than or equal to the maximum length, but $min >"
                                             . " $this->_max");
         }
         $this->_min = max(0, (integer) $min);
         return $this;
     }
 
     /**
      * Returns the max option
      *
      * @return integer|null
      */
     public function getMax()
     {
         return $this->_max;
     }
 
     /**
      * Sets the max option
      *
      * @param  integer|null $max
      * @throws Zend_Validate_Exception
      * @return Zend_Validate_StringLength Provides a fluent interface
      */
     public function setMax($max)
     {
         if (null === $max) {
             $this->_max = null;
         } else if ($max < $this->_min) {
             /**
              * @see Zend_Validate_Exception
              */
             // require_once 'Zend/Validate/Exception.php';
             throw new Zend_Validate_Exception("The maximum must be greater than or equal to the minimum length, but "
                                             . "$max < $this->_min");
         } else {
             $this->_max = (integer) $max;
         }
 
         return $this;
     }
 
     /**
      * Returns the actual encoding
      *
      * @return string
      */
     public function getEncoding()
     {
         return $this->_encoding;
     }
 
     /**
      * Sets a new encoding to use
      *
      * @param string $encoding
      * @throws Zend_Validate_Exception
      * @return Zend_Validate_StringLength
      */
     public function setEncoding($encoding = null)
     {
         if ($encoding !== null) {
             $orig = PHP_VERSION_ID < 50600
                         ? iconv_get_encoding('internal_encoding')
                         : ini_get('default_charset');
             if (PHP_VERSION_ID < 50600) {
                 if ($encoding) {
                     $result = iconv_set_encoding('internal_encoding', $encoding);
                 } else {
                     $result = false;
                 }
             } else {
                 ini_set('default_charset', $encoding);
                 $result = ini_get('default_charset');
             }
             if (!$result) {
                 // require_once 'Zend/Validate/Exception.php';
                 throw new Zend_Validate_Exception('Given encoding not supported on this OS!');
             }
 
             if (PHP_VERSION_ID < 50600) {
                 iconv_set_encoding('internal_encoding', $orig);
             } else {
                 ini_set('default_charset', $orig);
             }
         }
         $this->_encoding = $encoding;
         return $this;
     }
 
     /**
      * Defined by Zend_Validate_Interface
      *
      * Returns true if and only if the string length of $value is at least the min option and
      * no greater than the max option (when the max option is not null).
      *
      * @param  string $value
      * @return boolean
      */
     public function isValid($value)
     {
         if (!is_string($value)) {
             $this->_error(self::INVALID);
             return false;
         }
 
         $this->_setValue($value);
         if ($this->_encoding !== null) {
             $length = iconv_strlen($value, $this->_encoding);
         } else {
             $length = iconv_strlen($value);
         }
 
         if ($length < $this->_min) {
             $this->_error(self::TOO_SHORT);
         }
 
         if (null !== $this->_max && $this->_max < $length) {
             $this->_error(self::TOO_LONG);
         }
 
         if (count($this->_messages)) {
             return false;
         } else {
             return true;
         }
     }
 }