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/**

 * @file

 * This module will make the date API available to other modules.

 */

/**

 * Includes standard date types, format strings, strict regex strings for ISO

 * and DATETIME formats (seconds are optional).

 *

 */

define('DATE_ISO', 'date');

define('DATE_UNIX', 'datestamp');

      $output .= '<h2>More Information</h2><p>' . t('Complete documentation for the Date and Date API modules is available at <a href="@link">http://drupal.org/node/92460</a>.', array('@link' => 'http://drupal.org/node/262062')) . '</p>';

      return $output;

  }

}

  }

  return array('errors', $error_messages, 'success' => $success_messages);

}

/**

 * Implements hook_menu().

 */

function date_api_menu() {

  $items['admin/config/date'] = array(

    'title' => 'Date API',

    'description' => 'Settings for modules the use the Date API.',

}

/**

 *

 * This class is a Drupal independent extension of the >= PHP 5.2 DateTime

 * class.

    'hour',

    'minute',

    'second',

  );

  private $serializedTime;

  private $serializedTimezone;

    // Special handling for Unix timestamps expressed in the local timezone.

    // Create a date object in UTC and convert it to the local timezone. Don't

    // try to turn things like '2010' with a format of 'Y' into a timestamp.

      // Assume timestamp.

      $time = "@" . $time;

      $date = new DateObject($time, 'UTC');

      if (preg_match('/[a-zA-Z]/', $tz->getName())) {

        $this->setTimezone($tz);

      }

      else {

        $this->setTimezone(new DateTimeZone("UTC"));

        $this->errors['timezone'] = t('No valid timezone name was provided.');

  /**

   * Merges two date objects together using the current date values as defaults.

   *

   *   Another date object to merge with.

   *

   *   A merged date object.

   */

    $other_tz = $other->getTimezone();

    $this_tz = $this->getTimezone();

    // Figure out which timezone to use for combination.

   * Overrides base format function, formats this date according to its

   * available granularity, unless $force'ed not to limit to granularity.

   *

   *

   * @param string $format

   *   A date format string.

   * @param bool $force

   *   Whether or not to limit the granularity. Defaults to FALSE.

   *

   *   Returns the formatted date string on success or FALSE on failure.

   */

  public function format($format, $force = FALSE) {

  public function validGranularity($granularity = NULL, $flexible = FALSE) {

    $true = $this->hasGranularity() && (!$granularity || $flexible || $this->hasGranularity($granularity));

    if (!$true && $granularity) {

      foreach ((array) $granularity as $part) {

          switch ($part) {

            case 'second':

              $this->errors[$part] = t('The second is missing.');

   * @param array $granularity

   *   An array of date parts.

   */

    foreach ($this->granularity as $key => $val) {

      if ($val != 'timezone' && !in_array($val, $granularity)) {

        unset($this->granularity[$key]);

    $regex1 = str_replace('a', '(.)', $regex1);

    preg_match('`^' . $regex1 . '$`', stripslashes($format), $letters);

    array_shift($letters);

    preg_match('`^' . $regex2 . '$`u', $date, $values);

    array_shift($values);

    // If we did not find all the values for the patterns in the format, abort.

          break;

        case 'a':

        case 'A':

          break;

        case 'g':

      }

    }

    }

    // Blank becomes current time, given TZ.

   *   (optional) Whether to force a full date by filling in missing values.

   *   Defaults to FALSE.

   */

    // Add empty values to avoid errors. The empty values must create a valid

    // date or we will get date slippage, i.e. a value of 2011-00-00 will get

    // interpreted as November of 2010 by PHP.

   * @return array

   *   An array of error messages, keyed by date part.

   */

    $errors = array();

    $now = date_now();

    $default_month = !empty($arr['month']) ? $arr['month'] : $now->format('n');

  public function difference($date2_in, $measure = 'seconds', $absolute = TRUE) {

    // Create cloned objects or original dates will be impacted by the

    // date_modify() operations done in this code.

    if (is_object($date1) && is_object($date2)) {

      $diff = date_format($date2, 'U') - date_format($date1, 'U');

      if ($diff == 0) {

    }

    return NULL;

  }

}

/**

 * @return bool

 *   TRUE if the element is effectively hidden, FALSE otherwise.

 */

  if ((isset($element['#access']) && empty($element['#access']))

    || !empty($element['#programmed'])

    || in_array($element['#type'], array('hidden', 'value'))) {

    default:

      $context = '';

  }

  foreach (date_week_days_untranslated() as $key => $day) {

    $weekdays[$key] = t(substr($day, 0, $length), array(), array('context' => $context));

 * @return array

 *   An array of weekdays reordered to match the first day of the week.

 */

  $first_day = variable_get('date_first_day', 0);

  if ($first_day > 0) {

    for ($i = 1; $i <= $first_day; $i++) {

 *   An array of AM and PM options.

 */

function date_ampm($required = FALSE) {

}

/**

 * @param array $granularity

 *   An array of date parts.

 */

  return array_intersect(array(

    'year',

    'month',

 * @return string

 *   The most precise element in a granularity array.

 */

  $input = date_granularity_sorted($granularity_array);

  return array_pop($input);

}

 *   (optional) PHP DateTimeZone object, string or NULL allowed. Optionally

 *   force time to a specific timezone, defaults to user timezone, if set,

 *   otherwise site timezone. Defaults to NULL.

 * @param bool $reset

 *   (optional) Static cache reset.

 *

 *   The current time as a date object.

 */

function date_now($timezone = NULL, $reset = FALSE) {

  if ($timezone instanceof DateTimeZone) {

    $static_var = __FUNCTION__ . $timezone->getName();

  }

  if ($reset) {

    drupal_static_reset($static_var);

  }

  // Avoid unexpected manipulation of cached $now object

  // @see https://drupal.org/node/2261395

  $clone = clone $now;

  return $clone;

  date_modify($min_date, '-' . strval((7 + $day_wday - $first_day) % 7) . ' days');

  // Move forwards to the last day of the week.

  if (date_format($min_date, 'Y') != $year) {

    $min_date = new DateObject($year . '-01-01 00:00:00');

  }

  // Move forwards to the last day of the week.

  return array($min_date, $max_date);

}

  // Remove the leap week if it's present.

  if ($date_year > intval($parts[0])) {

    date_modify($last_date, '-7 days');

    $week = date_format($last_date, 'W') + 1;

  }

 * @return bool

 *   TRUE if the granularity contains a time portion, FALSE otherwise.

 */

  if (!is_array($granularity)) {

    $granularity = array();

  }

 * @return bool

 *   TRUE if the granularity contains a date portion, FALSE otherwise.

 */

  if (!is_array($granularity)) {

    $granularity = array();

  }

 * @return string

 *   The format string with all other elements removed.

 */

  // Use the advanced drupal_static() pattern to improve performance.

  static $drupal_static_fast;

  if (!isset($drupal_static_fast)) {

 * Strips out unwanted granularity elements.

 *

 * @param array $granularity

 *

 * @return array

 *   A reduced set of granularitiy elements.

 */

  $options = array(

    'year',

    'month',

  return array(

    'date_nav_title' => $base + array(

      'variables' => array(

      ),

    ),

    'date_timezone' => $base + array('render element' => 'element'),

    'date_calendar_day' => $base + array('variables' => array('date' => NULL)),

    'date_time_ago' => $base + array(

      'variables' => array(

      ),

    ),

  );

    case ('none'):

    default:

      $timezone = date_default_timezone();

  }

  return $timezone;

}

 * @return string

 *   A min and max year string like '-3:+1'.

 */

  $this_year = date_format(date_now(), 'Y');

  if ($years[0] < $this_year) {

 * @param string $string2

 *   A string date in datetime format for the 'end' date.

 * @param string $granularity

 * @param int $increment

 *

 * @return bool

 *   TRUE if the date is all day, FALSE otherwise.

 */

function date_is_all_day($string1, $string2, $granularity = 'second', $increment = 1) {

  if (empty($string1) || empty($string2)) {

    return FALSE;

  }

  elseif (!in_array($granularity, array('hour', 'minute', 'second'))) {

    return FALSE;

  }

  preg_match('/([0-9]{4}-[0-9]{2}-[0-9]{2}) (([0-9]{2}):([0-9]{2}):([0-9]{2}))/', $string1, $matches);

  $count = count($matches);

  $date1 = $count > 1 ? $matches[1] : '';

  $hour1 = $count > 3 ? intval($matches[3]) : 0;

  $min1 = $count > 4 ? intval($matches[4]) : 0;

  $sec1 = $count > 5 ? intval($matches[5]) : 0;

  preg_match('/([0-9]{4}-[0-9]{2}-[0-9]{2}) (([0-9]{2}):([0-9]{2}):([0-9]{2}))/', $string2, $matches);

  $count = count($matches);

  $date2 = $count > 1 ? $matches[1] : '';

  $hour2 = $count > 3 ? intval($matches[3]) : 0;

  $min2 = $count > 4 ? intval($matches[4]) : 0;

  $sec2 = $count > 5 ? intval($matches[5]) : 0;

    return FALSE;

  }

  $tmp = date_minutes('i', TRUE, $increment);

  $max_minutes = intval(array_pop($tmp));

  // maximum possible (59), or 0.

  switch ($granularity) {

    case 'second':

      break;

    case 'minute':

      break;

    case 'hour':

      break;

    default:

 * Replace specific ISO values using patterns.

 *

 * Function will replace ISO values that have the pattern 9999-00-00T00:00:00

 * Without this fix, the ISO date '2020-00-00T00:00:00' would be created as

 * November 30, 2019 (the previous day in the previous month).

 *

 * @return mixed|string

 *   replaced value, or incoming value.

 *

 */

function date_make_iso_valid($iso_string) {

  // If this isn't a value that uses an ISO pattern, there is nothing to do.