+ // postedDurationToMinutes - converts a value representing a duration
+ // (usually enetered in a form by a user) to integer number of minutes.
+ //
+ // At the moment, we have 2 variations of duration types:
+ // 1) A duration within a day, such as in a time entry.
+ // These are less or equal to 24 hours.
+ //
+ // 2) A duration of a monthly quota, with max value of 31*24 hours.
+ //
+ // This function is generic to be used for both types.
+ // Other functions will be used to check for specific max values.
+ //
+ // Returns false if the value cannot be converted.
+ static function postedDurationToMinutes($duration) {
+ // Handle empty value.
+ if (!isset($duration) || strlen($duration) == 0)
+ return null; // Value is not set. Caller decides whether it is valid or not.
+
+ // Handle whole hours.
+ if (preg_match('/^\d{1,3}h?$/', $duration )) { // 0 - 999, 0h - 999h
+ $minutes = 60 * trim($duration, 'h');
+ return $minutes;
+ }
+
+ // Handle a normalized duration value.
+ if (preg_match('/^\d{1,3}:[0-5][0-9]$/', $duration )) { // 0:00 - 999:59
+ $time_array = explode(':', $duration);
+ $minutes = (int)@$time_array[1] + ((int)@$time_array[0]) * 60;
+ return $minutes;
+ }
+
+ // Handle localized fractional hours.
+ global $user;
+ $localizedPattern = '/^(\d{1,3})?['.$user->decimal_mark.'][0-9]{1,4}h?$/';
+ if (preg_match($localizedPattern, $duration )) { // decimal values like .5, 1.25h, ... .. 999.9999h (or with comma)
+ if ($user->decimal_mark == ',')
+ $duration = str_replace (',', '.', $duration);
+
+ $minutes = (int)round(60 * floatval($duration));
+ return $minutes;
+ }
+
+ // Handle minutes. Some users enter durations like 10m (meaning 10 minutes).
+ if (preg_match('/^\d{1,5}m$/', $duration )) { // 0m - 99999m
+ $minutes = (int) trim($duration, 'm');
+ return $minutes;
+ }
+
+ // Everything else is not a valid duration.
+ return false;
+ }
+
+ static function durationToMinutes($duration) {
+ $minutes = ttTimeHelper::postedDurationToMinutes($duration);
+ if (false === $minutes || $minutes > 24*60)
+ return false; // $duration is not valid for a day entry.
+ return $minutes;
+ }
+
+ static function quotaToMinutes($duration) {
+ $minutes = ttTimeHelper::postedDurationToMinutes($duration);
+ if (false === $minutes || $minutes > 31*24*60)
+ return false; // $duration is not valid for a monthly quota.
+ return $minutes;
+ }
+