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FileReader.php
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FileReader.php
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<?php
declare(strict_types=1);
/*
* This file is part of PHP CS Fixer.
*
* (c) Fabien Potencier <fabien@symfony.com>
* Dariusz Rumiński <dariusz.ruminski@gmail.com>
*
* This source file is subject to the MIT license that is bundled
* with this source code in the file LICENSE.
*/
namespace PhpCsFixer;
/**
* File reader that unify access to regular file and stdin-alike file.
*
* Regular file could be read multiple times with `file_get_contents`, but file provided on stdin cannot.
* Consecutive try will provide empty content for stdin-alike file.
* This reader unifies access to them.
*
* @internal
*/
final class FileReader
{
/**
* @var null|string
*/
private $stdinContent;
public static function createSingleton(): self
{
static $instance = null;
if (!$instance) {
$instance = new self();
}
return $instance;
}
public function read(string $filePath): string
{
if ('php://stdin' === $filePath) {
if (null === $this->stdinContent) {
$this->stdinContent = $this->readRaw($filePath);
}
return $this->stdinContent;
}
return $this->readRaw($filePath);
}
private function readRaw(string $realPath): string
{
$content = @file_get_contents($realPath);
if (false === $content) {
$error = error_get_last();
throw new \RuntimeException(sprintf(
'Failed to read content from "%s".%s',
$realPath,
$error ? ' '.$error['message'] : ''
));
}
return $content;
}
}