Sesshin\EntropyGenerator\File

Complexity

Total Complexity

3

Size/Duplication

Total Lines	29
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	1

Importance

Changes

0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	5	1
A	generate()	0	9	2

<?php
namespace Sesshin\EntropyGenerator;

use Sesshin\Exception;

class File implements EntropyGeneratorInterface
{
    private $file;
    private $length;

    /**
     * @param string $file
     * @param int $length
     */
    public function __construct($file = '/dev/urandom', $length = 512)
    {
        $this->file = $file;
        $this->length = $length;
    }

    /**
     * @return string
     * @throws Exception
     */
    public function generate()
    {
        $entropy = file_get_contents($this->file, false, null, 0, $this->length);
        if (empty($entropy)) {
            throw new Exception('Entropy file is empty.');
        }

        return $entropy;
    }
}