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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\Validator\AbstractValidator;
use Zend\Validator\Exception;
/**
* Validator for counting all given files
*
*/
class Count extends AbstractValidator
{
/**#@+
* @const string Error constants
*/
const TOO_MANY = 'fileCountTooMany';
const TOO_FEW = 'fileCountTooFew';
/**#@-*/
/**
* @var array Error message templates
*/
protected $messageTemplates = array(
self::TOO_MANY => "Too many files, maximum '%max%' are allowed but '%count%' are given",
self::TOO_FEW => "Too few files, minimum '%min%' are expected but '%count%' are given",
);
/**
* @var array Error message template variables
*/
protected $messageVariables = array(
'min' => array('options' => 'min'),
'max' => array('options' => 'max'),
'count' => 'count'
);
/**
* Actual filecount
*
* @var int
*/
protected $count;
/**
* Internal file array
* @var array
*/
protected $files;
/**
* Options for this validator
*
* @var array
*/
protected $options = array(
'min' => null, // Minimum file count, if null there is no minimum file count
'max' => null, // Maximum file count, if null there is no maximum file count
);
/**
* Sets validator options
*
* Min limits the file count, when used with max=null it is the maximum file count
* It also accepts an array with the keys 'min' and 'max'
*
* If $options is an integer, it will be used as maximum file count
* As Array is accepts the following keys:
* 'min': Minimum filecount
* 'max': Maximum filecount
*
* @param int|array|\Traversable $options Options for the adapter
*/
public function __construct($options = null)
{
if (is_string($options) || is_numeric($options)) {
$options = array('max' => $options);
}
if (1 < func_num_args()) {
$options['min'] = func_get_arg(0);
$options['max'] = func_get_arg(1);
}
parent::__construct($options);
}
/**
* Returns the minimum file count
*
* @return int
*/
public function getMin()
{
return $this->options['min'];
}
/**
* Sets the minimum file count
*
* @param int|array $min The minimum file count
* @return Count Provides a fluent interface
* @throws Exception\InvalidArgumentException When min is greater than max
*/
public function setMin($min)
{
if (is_array($min) and isset($min['min'])) {
$min = $min['min'];
}
if (!is_string($min) and !is_numeric($min)) {
throw new Exception\InvalidArgumentException('Invalid options to validator provided');
}
$min = (int) $min;
if (($this->getMax() !== null) && ($min > $this->getMax())) {
throw new Exception\InvalidArgumentException(
"The minimum must be less than or equal to the maximum file count, but {$min} > {$this->getMax()}"
);
}
$this->options['min'] = $min;
return $this;
}
/**
* Returns the maximum file count
*
* @return int
*/
public function getMax()
{
return $this->options['max'];
}
/**
* Sets the maximum file count
*
* @param int|array $max The maximum file count
* @return Count Provides a fluent interface
* @throws Exception\InvalidArgumentException When max is smaller than min
*/
public function setMax($max)
{
if (is_array($max) and isset($max['max'])) {
$max = $max['max'];
}
if (!is_string($max) and !is_numeric($max)) {
throw new Exception\InvalidArgumentException('Invalid options to validator provided');
}
$max = (int) $max;
if (($this->getMin() !== null) && ($max < $this->getMin())) {
throw new Exception\InvalidArgumentException(
"The maximum must be greater than or equal to the minimum file count, but {$max} < {$this->getMin()}"
);
}
$this->options['max'] = $max;
return $this;
}
/**
* Adds a file for validation
*
* @param string|array $file
* @return Count
*/
public function addFile($file)
{
if (is_string($file)) {
$file = array($file);
}
if (is_array($file)) {
foreach ($file as $name) {
if (!isset($this->files[$name]) && !empty($name)) {
$this->files[$name] = $name;
}
}
}
return $this;
}
/**
* Returns true if and only if the file count of all checked files is at least min and
* not bigger than max (when max is not null). Attention: When checking with set min you
* must give all files with the first call, otherwise you will get a false.
*
* @param string|array $value Filenames to check for count
* @param array $file File data from \Zend\File\Transfer\Transfer
* @return bool
*/
public function isValid($value, $file = null)
{
if (($file !== null) && !array_key_exists('destination', $file)) {
$file['destination'] = dirname($value);
}
if (($file !== null) && array_key_exists('tmp_name', $file)) {
$value = $file['destination'] . DIRECTORY_SEPARATOR . $file['name'];
}
if (($file === null) || !empty($file['tmp_name'])) {
$this->addFile($value);
}
$this->count = count($this->files);
if (($this->getMax() !== null) && ($this->count > $this->getMax())) {
return $this->throwError($file, self::TOO_MANY);
}
if (($this->getMin() !== null) && ($this->count < $this->getMin())) {
return $this->throwError($file, self::TOO_FEW);
}
return true;
}
/**
* Throws an error of the given type
*
* @param string $file
* @param string $errorType
* @return false
*/
protected function throwError($file, $errorType)
{
if ($file !== null) {
if (is_array($file)) {
if (array_key_exists('name', $file)) {
$this->value = $file['name'];
}
} elseif (is_string($file)) {
$this->value = $file;
}
}
$this->error($errorType);
return false;
}
}
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