-<?php

-/**

-*

-* @package phpBB3

-* @copyright (c) 2012 phpBB Group

-* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2

-*/

-

-/**

-* phpBB custom extensions to the PHP DateTime class

-* This handles the relative formats phpBB employs

-*/

-class phpbb_datetime extends DateTime

-{

- /**

- * String used to wrap the date segment which should be replaced by today/tomorrow/yesterday

- */

- const RELATIVE_WRAPPER = '|';

-

- /**

- * @var user User who is the context for this DateTime instance

- */

- protected $user;

-

- /**

- * @var array Date formats are preprocessed by phpBB, to save constant recalculation they are cached.

- */

- static protected $format_cache = array();

-

- /**

- * Constructs a new instance of phpbb_datetime, expanded to include an argument to inject

- * the user context and modify the timezone to the users selected timezone if one is not set.

- *

- * @param string $time String in a format accepted by strtotime().

- * @param DateTimeZone $timezone Time zone of the time.

- * @param user User object for context.

- */

- public function __construct($user, $time = 'now', DateTimeZone $timezone = null)

- {

- $this->user = $user;

- $timezone = $timezone ?: $this->user->timezone;

-

- parent::__construct($time, $timezone);

- }

-

- /**

- * Formats the current date time into the specified format

- *

- * @param string $format Optional format to use for output, defaults to users chosen format

- * @param boolean $force_absolute Force output of a non relative date

- * @return string Formatted date time

- */

- public function format($format = '', $force_absolute = false)

- {

- $format = $format ? $format : $this->user->date_format;

- $format = self::format_cache($format, $this->user);

- $relative = ($format['is_short'] && !$force_absolute);

- $now = new self($this->user, 'now', $this->user->timezone);

-

- $timestamp = $this->getTimestamp();

- $now_ts = $now->getTimeStamp();

-

- $delta = $now_ts - $timestamp;

-

- if ($relative)

- {

- /*

- * Check the delta is less than or equal to 1 hour

- * and the delta not more than a minute in the past

- * and the delta is either greater than -5 seconds or timestamp

- * and current time are of the same minute (they must be in the same hour already)

- * finally check that relative dates are supported by the language pack

- */

- if ($delta <= 3600 && $delta > -60 &&

- ($delta >= -5 || (($now_ts / 60) % 60) == (($timestamp / 60) % 60))

- && isset($this->user->lang['datetime']['AGO']))

- {

- return $this->user->lang(array('datetime', 'AGO'), max(0, (int) floor($delta / 60)));

- }

- else

- {

- $midnight = clone $now;

- $midnight->setTime(0, 0, 0);

-

- $midnight = $midnight->getTimestamp();

-

- $day = false;

-

- if ($timestamp > $midnight + 86400)

- {

- $day = 'TOMORROW';

- }

- else if ($timestamp > $midnight)

- {

- $day = 'TODAY';

- }

- else if ($timestamp > $midnight - 86400)

- {

- $day = 'YESTERDAY';

- }

-

- if ($day !== false)

- {

- // Format using the short formatting and finally swap out the relative token placeholder with the correct value

- return str_replace(self::RELATIVE_WRAPPER . self::RELATIVE_WRAPPER, $this->user->lang['datetime'][$day], strtr(parent::format($format['format_short']), $format['lang']));

- }

- }

- }

-

- return strtr(parent::format($format['format_long']), $format['lang']);

- }

-

- /**

- * Magic method to convert DateTime object to string

- *

- * @return Formatted date time, according to the users default settings.

- */

- public function __toString()

- {

- return $this->format();

- }

-

- /**

- * Pre-processes the specified date format

- *

- * @param string $format Output format

- * @param user $user User object to use for localisation

- * @return array Processed date format

- */

- static protected function format_cache($format, $user)

- {

- $lang = $user->lang_name;

-

- if (!isset(self::$format_cache[$lang]))

- {

- self::$format_cache[$lang] = array();

- }

-

- if (!isset(self::$format_cache[$lang][$format]))

- {

- // Is the user requesting a friendly date format (i.e. 'Today 12:42')?

- self::$format_cache[$lang][$format] = array(

- 'is_short' => strpos($format, self::RELATIVE_WRAPPER) !== false,

- 'format_short' => substr($format, 0, strpos($format, self::RELATIVE_WRAPPER)) . self::RELATIVE_WRAPPER . self::RELATIVE_WRAPPER . substr(strrchr($format, self::RELATIVE_WRAPPER), 1),

- 'format_long' => str_replace(self::RELATIVE_WRAPPER, '', $format),

- 'lang' => array_filter($user->lang['datetime'], 'is_string'),

- );

-

- // Short representation of month in format? Some languages use different terms for the long and short format of May

- if ((strpos($format, '\M') === false && strpos($format, 'M') !== false) || (strpos($format, '\r') === false && strpos($format, 'r') !== false))

- {

- self::$format_cache[$lang][$format]['lang']['May'] = $user->lang['datetime']['May_short'];

- }

- }

-

- return self::$format_cache[$lang][$format];

- }

-}