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<?php
declare(strict_types=1);
namespace Laminas\Filter\File;
use Laminas\Filter\Exception;
use Laminas\Filter\StringToLower;
use function assert;
use function file_exists;
use function file_get_contents;
use function file_put_contents;
use function is_array;
use function is_scalar;
use function is_string;
use function is_writable;
/** @final */
class LowerCase extends StringToLower
{
/**
* Defined by Laminas\Filter\Filter
*
* Does a lowercase on the content of the given file
*
* @param mixed $value Full path of file to change or $_FILES data array
* @return string|mixed 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 = $value['tmp_name'];
}
assert(is_string($value));
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 ($content === false) {
throw new Exception\RuntimeException("Problem while reading file '$value'");
}
$content = parent::filter($content);
$result = file_put_contents($value, $content);
if ($result === false) {
throw new Exception\RuntimeException("Problem while writing file '$value'");
}
if ($isFileUpload) {
return $uploadData;
}
return $value;
}
}