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<?php
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// $Id: quiz_datetime.inc,v 1.3 2009/05/28 16:52:06 mbutcher Exp $
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/////////////////////////////////
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// Date and time routines for use with quiz module.
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// - Based on event module
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// - All references to event variables should be optional
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/////////////////////////////////
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/**
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* @file
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* Handles the start and end times in a node form submission.
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* - Takes the array from form_date() and turns it into a timestamp
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* - Adjusts times for time zone offsets.
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* - Adapted from event.module
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*
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* @param $node The submitted node with form data.
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* @param $date The name of the date ('quiz_open' or 'quiz_close') to translate.
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*/
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function quiz_translate_form_date(&$node, $date) {
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$prefix = $node->$date;
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// If we have all the parameters, re-calculate $node->event_$date .
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if (isset($prefix['year']) && isset($prefix['month']) && isset($prefix['day'])) {
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// Build a timestamp based on the date supplied and the configured timezone.
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$node->$date = _quiz_mktime(0, 0, 0, $prefix['month'], $prefix['day'], $prefix['year'], 0);
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}
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else {
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form_set_error('quiz_open', t('Please supply a valid date.'));
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}
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}
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/**
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* Formats local time values to GMT timestamp using time zone offset supplied.
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* All time values in the database are GMT and translated here prior to insertion.
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*
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* Time zone settings are applied in the following order:
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* 1. If supplied, time zone offset is applied
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* 2. If user time zones are enabled, user time zone offset is applied
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* 3. If neither 1 nor 2 apply, the site time zone offset is applied
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*
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* @param $format The date() format to apply to the timestamp.
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* @param $timestamp The GMT timestamp value.
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* @param $offset Time zone offset to apply to the timestamp.
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* @return gmdate() formatted date value
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*/
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function _quiz_mktime($hour, $minute, $second, $month, $day, $year, $offset = NULL) {
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global $user;
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//print $user->timezone. " and ". variable_get('date_default_timezone', 0);
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$timestamp = gmmktime($hour, $minute, $second, $month, $day, $year);
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if (variable_get('configurable_timezones', 1) && $user->uid && strlen($user->timezone)) {
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return $timestamp - $user->timezone;
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}
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else {
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return $timestamp - variable_get('date_default_timezone', 0);
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}
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}
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/**
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* Formats a GMT timestamp to local date values using time zone offset supplied.
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* All timestamp values in event nodes are GMT and translated for display here.
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*
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* Pulled from event
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*
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* Time zone settings are applied in the following order
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* 1. If supplied, time zone offset is applied
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* 2. If user time zones are enabled, user time zone offset is applied
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* 3. If neither 1 nor 2 apply, the site time zone offset is applied
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*
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* @param $format The date() format to apply to the timestamp.
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* @param $timestamp The GMT timestamp value.
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* @param $offset Time zone offset to apply to the timestamp.
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* @return gmdate() formatted date value
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*/
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function _quiz_date($format, $timestamp, $offset = NULL) {
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global $user;
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if (isset($offset)) {
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$timestamp += $offset;
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}
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elseif (variable_get('configurable_timezones', 1) && $user->uid && strlen($user->timezone)) {
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$timestamp += $user->timezone;
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}
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else {
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$timestamp += variable_get('date_default_timezone', 0);
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}
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// make sure we apply the site first day of the week setting for dow requests
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$result = gmdate($format, $timestamp);
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return $result;
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}
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