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olson_parse_on() now parses as agreed for the new timezone settings.

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defacer 2005-03-16 03:41:56 +00:00
parent 3f95436073
commit 01b4c10789
1 changed files with 36 additions and 11 deletions
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47
lib/olson.php
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@ -455,19 +455,30 @@ function olson_parse_offset ($offset) {
/***
*** olson_parse_on_($on)
***
*** see `man zic`. This function translated the following formats
*** see `man zic`. This function translates the following formats
*** 5 the fifth of the month
*** lastSun the last Sunday in the month
*** lastMon the last Monday in the month
*** Sun>=8 first Sunday on or after the eighth
*** Sun<=25 last Sunday on or before the 25th
***
*** to a moodle friendly format. Returns
*** array(index =>$index, day =>$day)
*** to a moodle friendly format. Returns an array with:
***
*** startday: the day of the month that we start counting from.
*** if negative, it means we start from that day and
*** count backwards. since -1 would be meaningless,
*** it means "end of month and backwards".
*** weekday: the day of the week that we must find. we will
*** scan days from the startday until we find the
*** first such weekday. 0...6 = Sun...Sat.
*** -1 means that any day of the week will do,
*** effectively ending the search on startday.
*** skipweeks:after finding our end day as outlined above,
*** skip this many weeks. this enables us to find
*** "the second sunday >= 10". usually will be 0.
*/
function olson_parse_on ($on) {
$rule = array();
$days = array('sun' => 0, 'mon' => 1,
'tue' => 2, 'wed' => 3,
@ -475,8 +486,9 @@ function olson_parse_on ($on) {
'sat' => 6);
if(is_numeric($on)) {
$rule['index'] = $on;
$rule['day'] = -1;
$rule['startday'] = intval($on); // Start searching from that day
$rule['weekday'] = -1; // ...and stop there, no matter what weekday
$rule['skipweeks'] = 0; // Don't skip any weeks.
}
else {
$on = strtolower($on);
@ -486,18 +498,31 @@ function olson_parse_on ($on) {
trigger_error('Unknown last weekday: '.substr($on, 4));
}
else {
$rule['index'] = -1;
$rule['day'] = $days[substr($on, 4)];
$rule['startday'] = -1 // Start from end of month
$rule['weekday'] = $days[substr($on, 4)]; // Find the first such weekday
$rule['skipweeks'] = 0; // Don't skip any weeks.
}
}
else if(substr($on, 3, 2) == '>=') {
// e.g. Sun>=8
if(!isset($days[substr($on, 0, 3)])) {
trigger_error('Unknown last weekday: '.substr($on, 0, 3));
trigger_error('Unknown >= weekday: '.substr($on, 0, 3));
}
else {
$rule['index'] = substr($on, 5);
$rule['day'] = $days[substr($on, 0, 3)];
$rule['startday'] = intval(substr($on, 5)); // Start from that day of the month
$rule['weekday'] = $days[substr($on, 0, 3)]; // Find the first such weekday
$rule['skipweeks'] = 0; // Don't skip any weeks.
}
}
else if(substr($on, 3, 2) == '<=') {
// e.g. Sun<=25
if(!isset($days[substr($on, 0, 3)])) {
trigger_error('Unknown <= weekday: '.substr($on, 0, 3));
}
else {
$rule['startday'] = -intval(substr($on, 5)); // Start from that day of the month; COUNT BACKWARDS (minus sign)
$rule['weekday'] = $days[substr($on, 0, 3)]; // Find the first such weekday
$rule['skipweeks'] = 0; // Don't skip any weeks.
}
}
else {