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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\Filter\File;
use Zend\Filter\Exception;
use Zend\Filter\StringToLower;
class LowerCase extends StringToLower
{
/**
* Defined by Zend\Filter\Filter
*
* Does a lowercase on the content of the given file
*
* @param string|array $value Full path of file to change or $_FILES data array
* @return string|array The given $value
* @throws Exception\InvalidArgumentException
* @throws Exception\RuntimeException
*/
public function filter($value)
{
if (!is_scalar($value) && !is_array($value)) {
return $value;
}
// An uploaded file? Retrieve the 'tmp_name'
$isFileUpload = false;
if (is_array($value)) {
if (!isset($value['tmp_name'])) {
return $value;
}
$isFileUpload = true;
$uploadData = $value;
$value = $value['tmp_name'];
}
if (!file_exists($value)) {
throw new Exception\InvalidArgumentException("File '$value' not found");
}
if (!is_writable($value)) {
throw new Exception\RuntimeException("File '$value' is not writable");
}
$content = file_get_contents($value);
if (!$content) {
throw new Exception\RuntimeException("Problem while reading file '$value'");
}
$content = parent::filter($content);
$result = file_put_contents($value, $content);
if (!$result) {
throw new Exception\RuntimeException("Problem while writing file '$value'");
}
if ($isFileUpload) {
return $uploadData;
}
return $value;
}
}
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