<?php

/*                                                                        *
 * This script belongs to the FLOW3 package "Fluid".                      *
 *                                                                        *
 * It is free software; you can redistribute it and/or modify it under    *
 * the terms of the GNU Lesser General Public License as published by the *
 * Free Software Foundation, either version 3 of the License, or (at your *
 * option) any later version.                                             *
 *                                                                        *
 * This script is distributed in the hope that it will be useful, but     *
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN-    *
 * TABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser       *
 * General Public License for more details.                               *
 *                                                                        *
 * You should have received a copy of the GNU Lesser General Public       *
 * License along with the script.                                         *
 * If not, see http://www.gnu.org/licenses/lgpl.html                      *
 *                                                                        *
 * The TYPO3 project - inspiring people to share!                         *
 *                                                                        */

/**
 * Formats a DateTime object.
 *
 * = Examples =
 *
 * <code title="Defaults">
 * <f:format.date>{dateObject}</f:format.date>
 * </code>
 * <output>
 * 1980-12-13
 * (depending on the current date)
 * </output>
 *
 * <code title="Custom date format">
 * <f:format.date format="H:i">{dateObject}</f:format.date>
 * </code>
 * <output>
 * 01:23
 * (depending on the current time)
 * </output>
 *
 * <code title="strtotime string">
 * <f:format.date format="d.m.Y - H:i:s">+1 week 2 days 4 hours 2 seconds</f:format.date>
 * </code>
 * <output>
 * 13.12.1980 - 21:03:42
 * (depending on the current time, see http://www.php.net/manual/en/function.strtotime.php)
 * </output>
 *
 * <code title="output date from unix timestamp">
 * <f:format.date format="d.m.Y - H:i:s">@{someTimestamp}</f:format.date>
 * </code>
 * <output>
 * 13.12.1980 - 21:03:42
 * (depending on the current time. Don't forget the "@" in front of the timestamp see http://www.php.net/manual/en/function.strtotime.php)
 * </output>
 *
 * <code title="Localized dates using strftime date format">
 * <f:format.date format="%d. %B %Y">{dateObject}</f:format.date>
 * </code>
 * <output>
 * 13. Dezember 1980
 * (depending on the current date and defined locale. In the example you see the 1980-12-13 in a german locale)
 * </output>
 *
 * <code title="Inline notation">
 * {f:format.date(date: dateObject)}
 * </code>
 * <output>
 * 1980-12-13
 * (depending on the value of {dateObject})
 * </output>
 *
 * <code title="Inline notation (2nd variant)">
 * {dateObject -> f:format.date()}
 * </code>
 * <output>
 * 1980-12-13
 * (depending on the value of {dateObject})
 * </output>
 *
 * @license http://www.gnu.org/licenses/lgpl.html GNU Lesser General Public License, version 3 or later
 * @api
 */
class Tx_Fluid_ViewHelpers_Format_DateViewHelper extends Tx_Fluid_Core_ViewHelper_AbstractViewHelper {

	/**
	 * @var boolean
	 */
	protected $escapingInterceptorEnabled = FALSE;

	/**
	 * Render the supplied DateTime object as a formatted date.
	 *
	 * @param mixed $date either a DateTime object or a string that is accepted by DateTime constructor
	 * @param string $format Format String which is taken to format the Date/Time
	 *
	 * @throws Tx_Fluid_Core_ViewHelper_Exception
	 * @return string Formatted date
	 * @author Christopher Hlubek <hlubek@networkteam.com>
	 * @author Bastian Waidelich <bastian@typo3.org>
	 * @api
	 */
	public function render($date = NULL, $format = 'Y-m-d') {
		if ($date === NULL) {
			$date = $this->renderChildren();
			if ($date === NULL) {
				return '';
			}
		}
		if (!$date instanceof DateTime) {
			try {
				if (is_integer($date)) {
					$date = new DateTime('@' . $date);
				} else {
					$date = new DateTime($date);
				}
				$date->setTimezone(new DateTimeZone(date_default_timezone_get()));
			} catch (Exception $exception) {
				throw new Tx_Fluid_Core_ViewHelper_Exception('"' . $date . '" could not be parsed by DateTime constructor.', 1241722579);
			}
		}
		if (strpos($format, '%') !== FALSE) {
			return strftime($format, $date->format('U'));
		} else {
			return $date->format($format);
		}
	}
}
?>
