Sunrise\Http\Message\Stream\TempFileStream

Complexity

Total Complexity

5

Size/Duplication

Total Lines	33
Duplicated Lines	0 %

Test Coverage

Coverage

76.92%

Importance

Changes	1
Bugs	0	Features	0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	3	1
A	createFile()	0	18	4

<?php declare(strict_types=1);

/**
 * It's free open-source software released under the MIT License.
 *
 * @author Anatoly Nekhay <afenric@gmail.com>
 * @copyright Copyright (c) 2018, Anatoly Nekhay
 * @license https://github.com/sunrise-php/http-message/blob/master/LICENSE
 * @link https://github.com/sunrise-php/http-message
 */

namespace Sunrise\Http\Message\Stream;

use Sunrise\Http\Message\Exception\RuntimeException;
use Sunrise\Http\Message\Stream;

use function fopen;
use function is_resource;
use function is_writable;
use function sys_get_temp_dir;
use function tempnam;

final class TempFileStream extends Stream
{
    /**
     * @throws RuntimeException
     */
    public function __construct(string $prefix = '')
    {
        parent::__construct(self::createFile($prefix));
    }

    /**
     * @return resource
     *
     * @throws RuntimeException
     */
    private static function createFile(string $prefix)
    {
        $dirname = sys_get_temp_dir();
        if (!is_writable($dirname)) {
            throw new RuntimeException('Temporary files directory is not writable');
        }

        $filename = tempnam($dirname, $prefix);
        if ($filename === false) {
            throw new RuntimeException('Temporary file cannot be created');
        }

        $resource = fopen($filename, 'r+b');
        if (!is_resource($resource)) {
            throw new RuntimeException('Temporary file cannot be opened');
        }

        return $resource;
    }
}