365 Zeilen
11 KiB
PHP
365 Zeilen
11 KiB
PHP
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<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Validate
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* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id$
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*/
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/**
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* @see Zend_Validate_Abstract
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*/
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require_once 'Zend/Validate/Abstract.php';
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/**
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* Validator for the image size of a image file
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*
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* @category Zend
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* @package Zend_Validate
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* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Validate_File_ImageSize extends Zend_Validate_Abstract
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{
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/**
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* @const string Error constants
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*/
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const WIDTH_TOO_BIG = 'fileImageSizeWidthTooBig';
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const WIDTH_TOO_SMALL = 'fileImageSizeWidthTooSmall';
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const HEIGHT_TOO_BIG = 'fileImageSizeHeightTooBig';
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const HEIGHT_TOO_SMALL = 'fileImageSizeHeightTooSmall';
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const NOT_DETECTED = 'fileImageSizeNotDetected';
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const NOT_READABLE = 'fileImageSizeNotReadable';
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/**
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* @var array Error message template
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*/
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protected $_messageTemplates = array(
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self::WIDTH_TOO_BIG => "Maximum allowed width for image '%value%' should be '%maxwidth%' but '%width%' detected",
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self::WIDTH_TOO_SMALL => "Minimum expected width for image '%value%' should be '%minwidth%' but '%width%' detected",
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self::HEIGHT_TOO_BIG => "Maximum allowed height for image '%value%' should be '%maxheight%' but '%height%' detected",
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self::HEIGHT_TOO_SMALL => "Minimum expected height for image '%value%' should be '%minheight%' but '%height%' detected",
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self::NOT_DETECTED => "The size of image '%value%' could not be detected",
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self::NOT_READABLE => "File '%value%' is not readable or does not exist",
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);
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/**
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* @var array Error message template variables
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*/
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protected $_messageVariables = array(
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'minwidth' => '_minwidth',
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'maxwidth' => '_maxwidth',
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'minheight' => '_minheight',
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'maxheight' => '_maxheight',
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'width' => '_width',
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'height' => '_height'
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);
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/**
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* Minimum image width
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*
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* @var integer
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*/
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protected $_minwidth;
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/**
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* Maximum image width
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*
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* @var integer
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*/
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protected $_maxwidth;
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/**
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* Minimum image height
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*
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* @var integer
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*/
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protected $_minheight;
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/**
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* Maximum image height
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*
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* @var integer
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*/
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protected $_maxheight;
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/**
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* Detected width
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*
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* @var integer
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*/
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protected $_width;
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/**
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* Detected height
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*
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* @var integer
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*/
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protected $_height;
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/**
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* Sets validator options
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*
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* Accepts the following option keys:
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* - minheight
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* - minwidth
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* - maxheight
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* - maxwidth
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*
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* @param Zend_Config|array $options
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* @return void
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*/
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public function __construct($options)
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{
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if ($options instanceof Zend_Config) {
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$options = $options->toArray();
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} elseif (1 < func_num_args()) {
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if (!is_array($options)) {
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$options = array('minwidth' => $options);
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}
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$argv = func_get_args();
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array_shift($argv);
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$options['minheight'] = array_shift($argv);
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if (!empty($argv)) {
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$options['maxwidth'] = array_shift($argv);
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if (!empty($argv)) {
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$options['maxheight'] = array_shift($argv);
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}
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}
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} else if (!is_array($options)) {
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require_once 'Zend/Validate/Exception.php';
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throw new Zend_Validate_Exception ('Invalid options to validator provided');
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}
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if (isset($options['minheight']) || isset($options['minwidth'])) {
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$this->setImageMin($options);
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}
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if (isset($options['maxheight']) || isset($options['maxwidth'])) {
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$this->setImageMax($options);
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}
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}
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/**
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* Returns the set minimum image sizes
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*
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* @return array
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*/
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public function getImageMin()
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{
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return array('minwidth' => $this->_minwidth, 'minheight' => $this->_minheight);
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}
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/**
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* Returns the set maximum image sizes
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*
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* @return array
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*/
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public function getImageMax()
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{
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return array('maxwidth' => $this->_maxwidth, 'maxheight' => $this->_maxheight);
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}
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/**
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* Returns the set image width sizes
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*
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* @return array
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*/
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public function getImageWidth()
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{
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return array('minwidth' => $this->_minwidth, 'maxwidth' => $this->_maxwidth);
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}
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/**
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* Returns the set image height sizes
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*
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* @return array
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*/
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public function getImageHeight()
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{
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return array('minheight' => $this->_minheight, 'maxheight' => $this->_maxheight);
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}
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/**
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* Sets the minimum image size
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*
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* @param array $options The minimum image dimensions
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* @throws Zend_Validate_Exception When minwidth is greater than maxwidth
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* @throws Zend_Validate_Exception When minheight is greater than maxheight
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* @return Zend_Validate_File_ImageSize Provides a fluent interface
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*/
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public function setImageMin($options)
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{
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if (isset($options['minwidth'])) {
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if (($this->_maxwidth !== null) and ($options['minwidth'] > $this->_maxwidth)) {
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require_once 'Zend/Validate/Exception.php';
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throw new Zend_Validate_Exception("The minimum image width must be less than or equal to the "
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. " maximum image width, but {$options['minwidth']} > {$this->_maxwidth}");
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}
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}
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if (isset($options['maxheight'])) {
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if (($this->_maxheight !== null) and ($options['minheight'] > $this->_maxheight)) {
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require_once 'Zend/Validate/Exception.php';
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throw new Zend_Validate_Exception("The minimum image height must be less than or equal to the "
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. " maximum image height, but {$options['minheight']} > {$this->_maxheight}");
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}
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}
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if (isset($options['minwidth'])) {
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$this->_minwidth = (int) $options['minwidth'];
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}
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if (isset($options['minheight'])) {
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$this->_minheight = (int) $options['minheight'];
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}
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return $this;
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}
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/**
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* Sets the maximum image size
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*
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* @param array $options The maximum image dimensions
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* @throws Zend_Validate_Exception When maxwidth is smaller than minwidth
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* @throws Zend_Validate_Exception When maxheight is smaller than minheight
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* @return Zend_Validate_StringLength Provides a fluent interface
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*/
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public function setImageMax($options)
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{
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if (isset($options['maxwidth'])) {
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if (($this->_minwidth !== null) and ($options['maxwidth'] < $this->_minwidth)) {
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require_once 'Zend/Validate/Exception.php';
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throw new Zend_Validate_Exception("The maximum image width must be greater than or equal to the "
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. "minimum image width, but {$options['maxwidth']} < {$this->_minwidth}");
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}
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}
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if (isset($options['maxheight'])) {
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if (($this->_minheight !== null) and ($options['maxheight'] < $this->_minheight)) {
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require_once 'Zend/Validate/Exception.php';
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throw new Zend_Validate_Exception("The maximum image height must be greater than or equal to the "
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. "minimum image height, but {$options['maxheight']} < {$this->_minwidth}");
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}
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}
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if (isset($options['maxwidth'])) {
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$this->_maxwidth = (int) $options['maxwidth'];
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}
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if (isset($options['maxheight'])) {
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$this->_maxheight = (int) $options['maxheight'];
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}
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return $this;
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}
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/**
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* Sets the mimimum and maximum image width
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*
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* @param array $options The image width dimensions
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* @return Zend_Validate_File_ImageSize Provides a fluent interface
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*/
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public function setImageWidth($options)
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{
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$this->setImageMin($options);
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$this->setImageMax($options);
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return $this;
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}
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/**
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* Sets the mimimum and maximum image height
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*
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* @param array $options The image height dimensions
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* @return Zend_Validate_File_ImageSize Provides a fluent interface
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*/
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public function setImageHeight($options)
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{
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$this->setImageMin($options);
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$this->setImageMax($options);
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return $this;
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}
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/**
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* Defined by Zend_Validate_Interface
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*
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* Returns true if and only if the imagesize of $value is at least min and
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* not bigger than max
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*
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* @param string $value Real file to check for image size
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* @param array $file File data from Zend_File_Transfer
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* @return boolean
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*/
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public function isValid($value, $file = null)
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{
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// Is file readable ?
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require_once 'Zend/Loader.php';
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if (!Zend_Loader::isReadable($value)) {
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return $this->_throw($file, self::NOT_READABLE);
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}
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$size = @getimagesize($value);
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$this->_setValue($file);
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if (empty($size) or ($size[0] === 0) or ($size[1] === 0)) {
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return $this->_throw($file, self::NOT_DETECTED);
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}
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$this->_width = $size[0];
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$this->_height = $size[1];
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if ($this->_width < $this->_minwidth) {
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$this->_throw($file, self::WIDTH_TOO_SMALL);
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}
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if (($this->_maxwidth !== null) and ($this->_maxwidth < $this->_width)) {
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$this->_throw($file, self::WIDTH_TOO_BIG);
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}
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if ($this->_height < $this->_minheight) {
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$this->_throw($file, self::HEIGHT_TOO_SMALL);
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}
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if (($this->_maxheight !== null) and ($this->_maxheight < $this->_height)) {
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$this->_throw($file, self::HEIGHT_TOO_BIG);
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}
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if (count($this->_messages) > 0) {
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return false;
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}
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return true;
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}
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/**
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* Throws an error of the given type
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*
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* @param string $file
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* @param string $errorType
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* @return false
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*/
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protected function _throw($file, $errorType)
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{
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if ($file !== null) {
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$this->_value = $file['name'];
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}
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$this->_error($errorType);
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return false;
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}
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}
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