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<?php

/**
 * Matomo - free/libre analytics platform
 *
 * @link https://matomo.org
 * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
 *
 */
namespace Piwik\Validators;

abstract class BaseValidator
{
    /**
     * The method to validate a value. If the value has not an expected format, an instance of
     * {@link Piwik\Validators\Exception} should be thrown.
     *
     * @param $value
     * @throws Exception
     */
    public abstract function validate($value);
    protected function isValueBare($value)
    {
        // we allow this value. if it is supposed to be not empty, please use NotEmpty validator on top
        return $value === false || $value === null || $value === '';
    }
    /**
     * Lets you easily check a value against multiple validators.
     *
     * @param string $name The name/description of the field you want to validate the value for.
     *                     The name will be prefixed in case there is any error.
     * @param mixed $value The value which needs to be tested
     * @param BaseValidator[] $validators
     */
    public static function check($name, $value, $validators)
    {
        foreach ($validators as $validator) {
            try {
                $validator->validate($value);
            } catch (\Exception $e) {
                throw new \Piwik\Validators\Exception(strip_tags($name) . ': ' . $e->getMessage(), $e->getCode());
            }
        }
    }
}