Genkgo\Mail\Protocol\Imap\MessageData\Partial

Complexity

Total Complexity

7

Size/Duplication

Total Lines	53
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	0

Test Coverage

Coverage

100%

Importance

Changes

0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	11	3
A	__toString()	0	7	2
A	fromString()	0	10	2

<?php
declare(strict_types=1);

namespace Genkgo\Mail\Protocol\Imap\MessageData;

final class Partial
{
    /**
     * @var int
     */
    private $firstByte;
    /**
     * @var int
     */
    private $lastByte;

    /**
     * @param int $firstByte
     * @param int $lastByte
     */
    public function __construct(int $firstByte, int $lastByte)
    {
        if ($firstByte < 0 || $lastByte < $firstByte) {
            throw new \InvalidArgumentException(
                'Last byte must be greater than first byte, and first byte must be greater than zero'
            );
        }

        $this->firstByte = $firstByte;
        $this->lastByte = $lastByte;
    }

    /**
     * @return string
     */
    public function __toString(): string
    {
        return sprintf(
            '<%s>',
            $this->firstByte === $this->lastByte ? $this->firstByte : $this->firstByte . '.' . $this->lastByte
        );
    }

    /**
     * @param string $partial
     * @return Partial
     */
    public static function fromString(string $partial): self
    {
        $result = preg_match('/^<([0-9]+)(\.([0-9]+))?>$/', $partial, $matches);

        if ($result !== 1) {
            throw new \InvalidArgumentException('String is not a partial');
        }

        return new self((int)$matches[1], (int)($matches[3] ?? (int)$matches[1]));
    }
}