Respect\Validation\Rules\DateTime

Complexity

Total Complexity

9

Size/Duplication

Total Lines	47
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	1

Test Coverage

Coverage

94.44%

Importance

Changes

0

4 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	4	1
A	validate()	0	16	4
A	validateWithoutFormat()	0	4	1
A	validateWithFormat()	0	10	3

<?php

/*
 * This file is part of Respect/Validation.
 *
 * (c) Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
 *
 * For the full copyright and license information, please view the "LICENSE.md"
 * file that was distributed with this source code.
 */

namespace Respect\Validation\Rules;

use DateTimeInterface;

class DateTime extends AbstractRule
{
    const EXCEPTIONAL_FORMATS = [
        'c' => 'Y-m-d\TH:i:sP',
        'r' => 'D, d M Y H:i:s O',
    ];

    public $format;

    public function __construct(string $format = null)
    {
        $this->format = $format;
    }

    public function validate($input)
    {
        if ($input instanceof DateTimeInterface) {
            return true;
        }

        if (!is_scalar($input)) {
            return false;
        }

        if (is_null($this->format)) {
            return $this->validateWithoutFormat($input);
        }

        return $this->validateWithFormat($input, $this->format);
    }

    private function validateWithoutFormat(string $input): bool
    {
        return false !== strtotime($input);
    }

    private function validateWithFormat(string $input, string $format): bool
    {
        if (isset(self::EXCEPTIONAL_FORMATS[$format])) {
            $format = self::EXCEPTIONAL_FORMATS[$format];
        }

        $info = date_parse_from_format($format, $input);

        return $info['error_count'] === 0 && $info['warning_count'] === 0;
    }
}