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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Intl\DateFormatter\DateFormat;
/**
* Parser and formatter for date formats
*
* @author Igor Wiedler <igor@wiedler.ch>
*/
abstract class Transformer
{
/**
* Format a value using a configured DateTime as date/time source
*
*
* @param \DateTime $dateTime A DateTime object to be used to generate the formatted value
* @param int $length The formatted value string length
*
* @return string The formatted value
*/
abstract public function format(\DateTime $dateTime, $length);
/**
* Returns a reverse matching regular expression of a string generated by format()
*
* @param int $length The length of the value to be reverse matched
*
* @return string The reverse matching regular expression
*/
abstract public function getReverseMatchingRegExp($length);
/**
* Extract date options from a matched value returned by the processing of the reverse matching
* regular expression
*
* @param string $matched The matched value
* @param int $length The length of the Transformer pattern string
*
* @return array An associative array
*/
abstract public function extractDateOptions($matched, $length);
/**
* Pad a string with zeros to the left
*
* @param string $value The string to be padded
* @param int $length The length to pad
*
* @return string The padded string
*/
protected function padLeft($value, $length)
{
return str_pad($value, $length, '0', STR_PAD_LEFT);
}
}
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