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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Validator\File;
use Zend\Stdlib\ErrorHandler;
use Zend\Validator\AbstractValidator;
use Zend\Validator\Exception;
/**
* Validator for the image size of an image file
*/
class ImageSize extends AbstractValidator
{
/**
* @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 should be '%maxwidth%' but '%width%' detected",
self::WIDTH_TOO_SMALL => "Minimum expected width for image should be '%minwidth%' but '%width%' detected",
self::HEIGHT_TOO_BIG => "Maximum allowed height for image should be '%maxheight%' but '%height%' detected",
self::HEIGHT_TOO_SMALL => "Minimum expected height for image should be '%minheight%' but '%height%' detected",
self::NOT_DETECTED => "The size of image could not be detected",
self::NOT_READABLE => "File is not readable or does not exist",
);
/**
* @var array Error message template variables
*/
protected $messageVariables = array(
'minwidth' => array('options' => 'minWidth'),
'maxwidth' => array('options' => 'maxWidth'),
'minheight' => array('options' => 'minHeight'),
'maxheight' => array('options' => 'maxHeight'),
'width' => 'width',
'height' => 'height'
);
/**
* Detected width
*
* @var int
*/
protected $width;
/**
* Detected height
*
* @var int
*/
protected $height;
/**
* Options for this validator
*
* @var array
*/
protected $options = array(
'minWidth' => null, // Minimum image width
'maxWidth' => null, // Maximum image width
'minHeight' => null, // Minimum image height
'maxHeight' => null, // Maximum image height
);
/**
* Sets validator options
*
* Accepts the following option keys:
* - minheight
* - minwidth
* - maxheight
* - maxwidth
*
* @param array|\Traversable $options
*/
public function __construct($options = null)
{
if (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);
}
}
}
parent::__construct($options);
}
/**
* Returns the minimum allowed width
*
* @return int
*/
public function getMinWidth()
{
return $this->options['minWidth'];
}
/**
* Sets the minimum allowed width
*
* @param int $minWidth
* @return ImageSize Provides a fluid interface
* @throws Exception\InvalidArgumentException When minwidth is greater than maxwidth
*/
public function setMinWidth($minWidth)
{
if (($this->getMaxWidth() !== null) && ($minWidth > $this->getMaxWidth())) {
throw new Exception\InvalidArgumentException(
"The minimum image width must be less than or equal to the "
. " maximum image width, but {$minWidth} > {$this->getMaxWidth()}"
);
}
$this->options['minWidth'] = (int) $minWidth;
return $this;
}
/**
* Returns the maximum allowed width
*
* @return int
*/
public function getMaxWidth()
{
return $this->options['maxWidth'];
}
/**
* Sets the maximum allowed width
*
* @param int $maxWidth
* @return ImageSize Provides a fluid interface
* @throws Exception\InvalidArgumentException When maxwidth is less than minwidth
*/
public function setMaxWidth($maxWidth)
{
if (($this->getMinWidth() !== null) && ($maxWidth < $this->getMinWidth())) {
throw new Exception\InvalidArgumentException(
"The maximum image width must be greater than or equal to the "
. "minimum image width, but {$maxWidth} < {$this->getMinWidth()}"
);
}
$this->options['maxWidth'] = (int) $maxWidth;
return $this;
}
/**
* Returns the minimum allowed height
*
* @return int
*/
public function getMinHeight()
{
return $this->options['minHeight'];
}
/**
* Sets the minimum allowed height
*
* @param int $minHeight
* @return ImageSize Provides a fluid interface
* @throws Exception\InvalidArgumentException When minheight is greater than maxheight
*/
public function setMinHeight($minHeight)
{
if (($this->getMaxHeight() !== null) && ($minHeight > $this->getMaxHeight())) {
throw new Exception\InvalidArgumentException(
"The minimum image height must be less than or equal to the "
. " maximum image height, but {$minHeight} > {$this->getMaxHeight()}"
);
}
$this->options['minHeight'] = (int) $minHeight;
return $this;
}
/**
* Returns the maximum allowed height
*
* @return int
*/
public function getMaxHeight()
{
return $this->options['maxHeight'];
}
/**
* Sets the maximum allowed height
*
* @param int $maxHeight
* @return ImageSize Provides a fluid interface
* @throws Exception\InvalidArgumentException When maxheight is less than minheight
*/
public function setMaxHeight($maxHeight)
{
if (($this->getMinHeight() !== null) && ($maxHeight < $this->getMinHeight())) {
throw new Exception\InvalidArgumentException(
"The maximum image height must be greater than or equal to the "
. "minimum image height, but {$maxHeight} < {$this->getMinHeight()}"
);
}
$this->options['maxHeight'] = (int) $maxHeight;
return $this;
}
/**
* Returns the set minimum image sizes
*
* @return array
*/
public function getImageMin()
{
return array('minWidth' => $this->getMinWidth(), 'minHeight' => $this->getMinHeight());
}
/**
* Returns the set maximum image sizes
*
* @return array
*/
public function getImageMax()
{
return array('maxWidth' => $this->getMaxWidth(), 'maxHeight' => $this->getMaxHeight());
}
/**
* Returns the set image width sizes
*
* @return array
*/
public function getImageWidth()
{
return array('minWidth' => $this->getMinWidth(), 'maxWidth' => $this->getMaxWidth());
}
/**
* Returns the set image height sizes
*
* @return array
*/
public function getImageHeight()
{
return array('minHeight' => $this->getMinHeight(), 'maxHeight' => $this->getMaxHeight());
}
/**
* Sets the minimum image size
*
* @param array $options The minimum image dimensions
* @return ImageSize Provides a fluent interface
*/
public function setImageMin($options)
{
$this->setOptions($options);
return $this;
}
/**
* Sets the maximum image size
*
* @param array|\Traversable $options The maximum image dimensions
* @return ImageSize Provides a fluent interface
*/
public function setImageMax($options)
{
$this->setOptions($options);
return $this;
}
/**
* Sets the minimum and maximum image width
*
* @param array $options The image width dimensions
* @return ImageSize Provides a fluent interface
*/
public function setImageWidth($options)
{
$this->setImageMin($options);
$this->setImageMax($options);
return $this;
}
/**
* Sets the minimum and maximum image height
*
* @param array $options The image height dimensions
* @return ImageSize Provides a fluent interface
*/
public function setImageHeight($options)
{
$this->setImageMin($options);
$this->setImageMax($options);
return $this;
}
/**
* Returns true if and only if the image size of $value is at least min and
* not bigger than max
*
* @param string|array $value Real file to check for image size
* @param array $file File data from \Zend\File\Transfer\Transfer (optional)
* @return bool
*/
public function isValid($value, $file = null)
{
if (is_string($value) && is_array($file)) {
// Legacy Zend\Transfer API support
$filename = $file['name'];
$file = $file['tmp_name'];
} elseif (is_array($value)) {
if (!isset($value['tmp_name']) || !isset($value['name'])) {
throw new Exception\InvalidArgumentException(
'Value array must be in $_FILES format'
);
}
$file = $value['tmp_name'];
$filename = $value['name'];
} else {
$file = $value;
$filename = basename($file);
}
$this->setValue($filename);
// Is file readable ?
if (empty($file) || false === stream_resolve_include_path($file)) {
$this->error(self::NOT_READABLE);
return false;
}
ErrorHandler::start();
$size = getimagesize($file);
ErrorHandler::stop();
if (empty($size) || ($size[0] === 0) || ($size[1] === 0)) {
$this->error(self::NOT_DETECTED);
return false;
}
$this->width = $size[0];
$this->height = $size[1];
if ($this->width < $this->getMinWidth()) {
$this->error(self::WIDTH_TOO_SMALL);
}
if (($this->getMaxWidth() !== null) && ($this->getMaxWidth() < $this->width)) {
$this->error(self::WIDTH_TOO_BIG);
}
if ($this->height < $this->getMinHeight()) {
$this->error(self::HEIGHT_TOO_SMALL);
}
if (($this->getMaxHeight() !== null) && ($this->getMaxHeight() < $this->height)) {
$this->error(self::HEIGHT_TOO_BIG);
}
if (count($this->getMessages()) > 0) {
return false;
}
return true;
}
}