File Validator/Blank.php | ICanBoogie/Validate master

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<?php

/*
 * This file is part of the ICanBoogie package.
 *
 * (c) Olivier Laviale <olivier.laviale@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace ICanBoogie\Validate\Validator;

use ICanBoogie\Validate\Context;

/**
 * Validates that a value is blank.
 */
class Blank extends AbstractValidator
{
    const ALIAS = 'blank';
    const DEFAULT_MESSAGE = "should be blank";

    /**
     * @inheritdoc
     */
    public function validate($value, Context $context)
    {
        if (is_array($value) || $value instanceof \Countable)
        {
            return !count($value);
        }

        if ($value === false)
        {
            return false;
        }

        return trim($value) === '';
    }
}

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