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MDL-41792 core_calendar: refactored the calendar to allow the use of multiple calendar types

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Mark Nelson 2013-09-16 17:30:59 +08:00
parent bb74cdfef3
commit da3041379a
14 changed files with 759 additions and 475 deletions
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25
lib/moodlelib.php
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@ -2685,8 +2685,10 @@ function dst_offset_on($time, $strtimezone = null) {
* @return int
*/
function find_day_in_month($startday, $weekday, $month, $year) {
$calendartype = \core_calendar\type_factory::get_calendar_instance();
$daysinmonth = days_in_month($month, $year);
$daysinweek = count($calendartype->get_weekdays());
if ($weekday == -1) {
// Don't care about weekday, so return:
@ -2696,46 +2698,40 @@ function find_day_in_month($startday, $weekday, $month, $year) {
}
// From now on we 're looking for a specific weekday.
// Give "end of month" its actual value, since we know it.
if ($startday == -1) {
$startday = -1 * $daysinmonth;
}
// Starting from day $startday, the sign is the direction.
if ($startday < 1) {
$startday = abs($startday);
$lastmonthweekday = strftime('%w', mktime(12, 0, 0, $month, $daysinmonth, $year));
$lastmonthweekday = dayofweek($daysinmonth, $month, $year);
// This is the last such weekday of the month.
$lastinmonth = $daysinmonth + $weekday - $lastmonthweekday;
if ($lastinmonth > $daysinmonth) {
$lastinmonth -= 7;
$lastinmonth -= $daysinweek;
}
// Find the first such weekday <= $startday.
while ($lastinmonth > $startday) {
$lastinmonth -= 7;
$lastinmonth -= $daysinweek;
}
return $lastinmonth;
} else {
$indexweekday = strftime('%w', mktime(12, 0, 0, $month, $startday, $year));
$indexweekday = dayofweek($startday, $month, $year);
$diff = $weekday - $indexweekday;
if ($diff < 0) {
$diff += 7;
$diff += $daysinweek;
}
// This is the first such weekday of the month equal to or after $startday.
$firstfromindex = $startday + $diff;
return $firstfromindex;
}
}
@ -2749,7 +2745,8 @@ function find_day_in_month($startday, $weekday, $month, $year) {
* @return int
*/
function days_in_month($month, $year) {
return intval(date('t', mktime(12, 0, 0, $month, 1, $year)));
$calendartype = \core_calendar\type_factory::get_calendar_instance();
return $calendartype->get_num_days_in_month($year, $month);
}
/**
@ -2763,8 +2760,8 @@ function days_in_month($month, $year) {
* @return int
*/
function dayofweek($day, $month, $year) {
// I wonder if this is any different from strftime('%w', mktime(12, 0, 0, $month, $daysinmonth, $year, 0));.
return intval(date('w', mktime(12, 0, 0, $month, $day, $year)));
$calendartype = \core_calendar\type_factory::get_calendar_instance();
return $calendartype->get_weekday($year, $month, $day);
}
// USER AUTHENTICATION AND LOGIN.