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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 which checks if the file already exists in the directory
*/
class Exists extends AbstractValidator
{
/**
* @const string Error constants
*/
const DOES_NOT_EXIST = 'fileExistsDoesNotExist';
/**
* @var array Error message templates
*/
protected $messageTemplates = array(
self::DOES_NOT_EXIST => "File does not exist",
);
/**
* Options for this validator
*
* @var array
*/
protected $options = array(
'directory' => null, // internal list of directories
);
/**
* @var array Error message template variables
*/
protected $messageVariables = array(
'directory' => array('options' => 'directory'),
);
/**
* Sets validator options
*
* @param string|array|\Traversable $options
*/
public function __construct($options = null)
{
if (is_string($options)) {
$options = explode(',', $options);
}
if (is_array($options) && !array_key_exists('directory', $options)) {
$options = array('directory' => $options);
}
parent::__construct($options);
}
/**
* Returns the set file directories which are checked
*
* @param bool $asArray Returns the values as array; when false, a concatenated string is returned
* @return string|null
*/
public function getDirectory($asArray = false)
{
$asArray = (bool) $asArray;
$directory = $this->options['directory'];
if ($asArray && isset($directory)) {
$directory = explode(',', (string) $directory);
}
return $directory;
}
/**
* Sets the file directory which will be checked
*
* @param string|array $directory The directories to validate
* @return Extension Provides a fluent interface
*/
public function setDirectory($directory)
{
$this->options['directory'] = null;
$this->addDirectory($directory);
return $this;
}
/**
* Adds the file directory which will be checked
*
* @param string|array $directory The directory to add for validation
* @return Extension Provides a fluent interface
* @throws Exception\InvalidArgumentException
*/
public function addDirectory($directory)
{
$directories = $this->getDirectory(true);
if (!isset($directories)) {
$directories = array();
}
if (is_string($directory)) {
$directory = explode(',', $directory);
} elseif (!is_array($directory)) {
throw new Exception\InvalidArgumentException('Invalid options to validator provided');
}
foreach ($directory as $content) {
if (empty($content) || !is_string($content)) {
continue;
}
$directories[] = trim($content);
}
$directories = array_unique($directories);
// Sanity check to ensure no empty values
foreach ($directories as $key => $dir) {
if (empty($dir)) {
unset($directories[$key]);
}
}
$this->options['directory'] = (!empty($directory))
? implode(',', $directories) : null;
return $this;
}
/**
* Returns true if and only if the file already exists in the set directories
*
* @param string|array $value Real file to check for existence
* @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'];
$this->setValue($filename);
} 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'];
$filename = basename($file);
$this->setValue($value['name']);
} else {
$file = $value;
$filename = basename($file);
$this->setValue($filename);
}
$check = false;
$directories = $this->getDirectory(true);
if (!isset($directories)) {
$check = true;
if (!file_exists($file)) {
$this->error(self::DOES_NOT_EXIST);
return false;
}
} else {
foreach ($directories as $directory) {
if (!isset($directory) || '' === $directory) {
continue;
}
$check = true;
if (!file_exists($directory . DIRECTORY_SEPARATOR . $filename)) {
$this->error(self::DOES_NOT_EXIST);
return false;
}
}
}
if (!$check) {
$this->error(self::DOES_NOT_EXIST);
return false;
}
return true;
}
}