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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';
 
 /**
  * Validator for the image size of a image file
  *
  * @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_File_ImageSize extends Zend_Validate_Abstract
 {
     /**
      * @const string Error constants
      */
     const WIDTH_TOO_BIG    = 'fileImageSizeWidthTooBig';
     const WIDTH_TOO_SMALL  = 'fileImageSizeWidthTooSmall';
     const HEIGHT_TOO_BIG   = 'fileImageSizeHeightTooBig';
     const HEIGHT_TOO_SMALL = 'fileImageSizeHeightTooSmall';
     const NOT_DETECTED     = 'fileImageSizeNotDetected';
     const NOT_READABLE     = 'fileImageSizeNotReadable';
 
     /**
      * @var array Error message template
      */
     protected $_messageTemplates = array(
         self::WIDTH_TOO_BIG    => "Maximum allowed width for image '%value%' should be '%maxwidth%' but '%width%' detected",
         self::WIDTH_TOO_SMALL  => "Minimum expected width for image '%value%' should be '%minwidth%' but '%width%' detected",
         self::HEIGHT_TOO_BIG   => "Maximum allowed height for image '%value%' should be '%maxheight%' but '%height%' detected",
         self::HEIGHT_TOO_SMALL => "Minimum expected height for image '%value%' should be '%minheight%' but '%height%' detected",
         self::NOT_DETECTED     => "The size of image '%value%' could not be detected",
         self::NOT_READABLE     => "File '%value%' is not readable or does not exist",
     );
 
     /**
      * @var array Error message template variables
      */
     protected $_messageVariables = array(
         'minwidth'  => '_minwidth',
         'maxwidth'  => '_maxwidth',
         'minheight' => '_minheight',
         'maxheight' => '_maxheight',
         'width'     => '_width',
         'height'    => '_height'
     );
 
     /**
      * Minimum image width
      *
      * @var integer
      */
     protected $_minwidth;
 
     /**
      * Maximum image width
      *
      * @var integer
      */
     protected $_maxwidth;
 
     /**
      * Minimum image height
      *
      * @var integer
      */
     protected $_minheight;
 
     /**
      * Maximum image height
      *
      * @var integer
      */
     protected $_maxheight;
 
     /**
      * Detected width
      *
      * @var integer
      */
     protected $_width;
 
     /**
      * Detected height
      *
      * @var integer
      */
     protected $_height;
 
     /**
      * Sets validator options
      *
      * Accepts the following option keys:
      * - minheight
      * - minwidth
      * - maxheight
      * - maxwidth
      *
      * @param  Zend_Config|array $options
      * @throws Zend_Validate_Exception
      */
     public function __construct($options)
     {
         if ($options instanceof Zend_Config) {
             $options = $options->toArray();
         } elseif (1 < func_num_args()) {
             if (!is_array($options)) {
                 $options = array('minwidth' => $options);
             }
             $argv = func_get_args();
             array_shift($argv);
             $options['minheight'] = array_shift($argv);
             if (!empty($argv)) {
                 $options['maxwidth'] = array_shift($argv);
                 if (!empty($argv)) {
                     $options['maxheight'] = array_shift($argv);
                 }
             }
         } else if (!is_array($options)) {
             // require_once 'Zend/Validate/Exception.php';
             throw new Zend_Validate_Exception ('Invalid options to validator provided');
         }
 
         if (isset($options['minheight']) || isset($options['minwidth'])) {
             $this->setImageMin($options);
         }
 
         if (isset($options['maxheight']) || isset($options['maxwidth'])) {
             $this->setImageMax($options);
         }
     }
 
     /**
      * Returns the set minimum image sizes
      *
      * @return array
      */
     public function getImageMin()
     {
         return array('minwidth' => $this->_minwidth, 'minheight' => $this->_minheight);
     }
 
     /**
      * Returns the set maximum image sizes
      *
      * @return array
      */
     public function getImageMax()
     {
         return array('maxwidth' => $this->_maxwidth, 'maxheight' => $this->_maxheight);
     }
 
     /**
      * Returns the set image width sizes
      *
      * @return array
      */
     public function getImageWidth()
     {
         return array('minwidth' => $this->_minwidth, 'maxwidth' => $this->_maxwidth);
     }
 
     /**
      * Returns the set image height sizes
      *
      * @return array
      */
     public function getImageHeight()
     {
         return array('minheight' => $this->_minheight, 'maxheight' => $this->_maxheight);
     }
 
     /**
      * Sets the minimum image size
      *
      * @param  array $options               The minimum image dimensions
      * @throws Zend_Validate_Exception      When minwidth is greater than maxwidth
      * @throws Zend_Validate_Exception      When minheight is greater than maxheight
      * @return Zend_Validate_File_ImageSize Provides a fluent interface
      */
     public function setImageMin($options)
     {
         if (isset($options['minwidth'])) {
             if (($this->_maxwidth !== null) and ($options['minwidth'] > $this->_maxwidth)) {
                 // require_once 'Zend/Validate/Exception.php';
                 throw new Zend_Validate_Exception("The minimum image width must be less than or equal to the "
                     . " maximum image width, but {$options['minwidth']} > {$this->_maxwidth}");
             }
         }
 
         if (isset($options['maxheight'])) {
             if (($this->_maxheight !== null) and ($options['minheight'] > $this->_maxheight)) {
                 // require_once 'Zend/Validate/Exception.php';
                 throw new Zend_Validate_Exception("The minimum image height must be less than or equal to the "
                     . " maximum image height, but {$options['minheight']} > {$this->_maxheight}");
             }
         }
 
         if (isset($options['minwidth'])) {
             $this->_minwidth  = (int) $options['minwidth'];
         }
 
         if (isset($options['minheight'])) {
             $this->_minheight = (int) $options['minheight'];
         }
 
         return $this;
     }
 
     /**
      * Sets the maximum image size
      *
      * @param  array $options          The maximum image dimensions
      * @throws Zend_Validate_Exception When maxwidth is smaller than minwidth
      * @throws Zend_Validate_Exception When maxheight is smaller than minheight
      * @return Zend_Validate_StringLength Provides a fluent interface
      */
     public function setImageMax($options)
     {
         if (isset($options['maxwidth'])) {
             if (($this->_minwidth !== null) and ($options['maxwidth'] < $this->_minwidth)) {
                 // require_once 'Zend/Validate/Exception.php';
                 throw new Zend_Validate_Exception("The maximum image width must be greater than or equal to the "
                     . "minimum image width, but {$options['maxwidth']} < {$this->_minwidth}");
             }
         }
 
         if (isset($options['maxheight'])) {
             if (($this->_minheight !== null) and ($options['maxheight'] < $this->_minheight)) {
                 // require_once 'Zend/Validate/Exception.php';
                 throw new Zend_Validate_Exception("The maximum image height must be greater than or equal to the "
                     . "minimum image height, but {$options['maxheight']} < {$this->_minwidth}");
             }
         }
 
         if (isset($options['maxwidth'])) {
             $this->_maxwidth  = (int) $options['maxwidth'];
         }
 
         if (isset($options['maxheight'])) {
             $this->_maxheight = (int) $options['maxheight'];
         }
 
         return $this;
     }
 
     /**
      * Sets the mimimum and maximum image width
      *
      * @param  array $options               The image width dimensions
      * @return Zend_Validate_File_ImageSize Provides a fluent interface
      */
     public function setImageWidth($options)
     {
         $this->setImageMin($options);
         $this->setImageMax($options);
 
         return $this;
     }
 
     /**
      * Sets the mimimum and maximum image height
      *
      * @param  array $options               The image height dimensions
      * @return Zend_Validate_File_ImageSize Provides a fluent interface
      */
     public function setImageHeight($options)
     {
         $this->setImageMin($options);
         $this->setImageMax($options);
 
         return $this;
     }
 
     /**
      * Defined by Zend_Validate_Interface
      *
      * Returns true if and only if the imagesize of $value is at least min and
      * not bigger than max
      *
      * @param  string $value Real file to check for image size
      * @param  array  $file  File data from Zend_File_Transfer
      * @return boolean
      */
     public function isValid($value, $file = null)
     {
         // Is file readable ?
         // require_once 'Zend/Loader.php';
         if (!Zend_Loader::isReadable($value)) {
             return $this->_throw($file, self::NOT_READABLE);
         }
 
         $size = @getimagesize($value);
         $this->_setValue($file);
 
         if (empty($size) or ($size[0] === 0) or ($size[1] === 0)) {
             return $this->_throw($file, self::NOT_DETECTED);
         }
 
         $this->_width  = $size[0];
         $this->_height = $size[1];
         if ($this->_width < $this->_minwidth) {
             $this->_throw($file, self::WIDTH_TOO_SMALL);
         }
 
         if (($this->_maxwidth !== null) and ($this->_maxwidth < $this->_width)) {
             $this->_throw($file, self::WIDTH_TOO_BIG);
         }
 
         if ($this->_height < $this->_minheight) {
             $this->_throw($file, self::HEIGHT_TOO_SMALL);
         }
 
         if (($this->_maxheight !== null) and ($this->_maxheight < $this->_height)) {
             $this->_throw($file, self::HEIGHT_TOO_BIG);
         }
 
         if (count($this->_messages) > 0) {
             return false;
         }
 
         return true;
     }
 
     /**
      * Throws an error of the given type
      *
      * @param  string $file
      * @param  string $errorType
      * @return false
      */
     protected function _throw($file, $errorType)
     {
         if ($file !== null) {
             $this->_value = $file['name'];
         }
 
         $this->_error($errorType);
         return false;
     }
 }