+-- | (Un)pickle a UTCTime from a weather forecast's gamedate. Example
+-- input looks like,
+--
+-- \<forecast gamedate=\"Monday, December 30th\"\>
+--
+-- When unpickling we get rid of the suffixes \"st\", \"nd\", \"rd\", and
+-- \"th\". During pickling, we add them back based on the last digit
+-- of the date.
+--
+xp_gamedate :: PU UTCTime
+xp_gamedate =
+ (to_gamedate, from_gamedate) `xpWrapMaybe` xpText
+ where
+ format = "%A, %B %-d"
+
+ to_gamedate :: String -> Maybe UTCTime
+ to_gamedate s =
+ parseTime defaultTimeLocale format s'
+ where
+ s' = case (reverse s) of
+ (c2:c1:cs) -> let suffix = [c1,c2]
+ in
+ case suffix of
+ "st" -> reverse cs
+ "nd" -> reverse cs
+ "rd" -> reverse cs
+ "th" -> reverse cs
+ _ -> s -- Unknown suffix, leave it alone.
+ _ -> s -- The String is less than two characters long,
+ -- leave it alone.
+
+
+ from_gamedate :: UTCTime -> String
+ from_gamedate d = s ++ (suffix s)
+ where
+ s = formatTime defaultTimeLocale format d
+
+ suffix :: String -> String
+ suffix cs =
+ case (reverse cs) of
+ [] -> []
+ ('1':_) -> "st"
+ ('2':_) -> "nd"
+ ('3':_) -> "rd"
+ _ -> "th"
+
+
+
+
+
+
+-- | (Un)pickle a UTCTime without the date portion.
+--
+xp_time :: PU UTCTime
+xp_time =
+ (to_time, from_time) `xpWrapMaybe` xpText
+ where
+ to_time :: String -> Maybe UTCTime
+ to_time = parseTime defaultTimeLocale time_format
+
+ from_time :: UTCTime -> String
+ from_time = formatTime defaultTimeLocale time_format
+
+
+-- | (Un)pickle a UTCTime without the date portion. This differs from
+-- 'xp_time' in that it uses periods in the AM/PM part, i.e. \"A.M.\"
+-- and \"P.M.\" It also doesn't use padding for the \"hours\" part.
+--
+-- Examples:
+--
+-- * \<CurrentTimeStamp\>11:30 A.M.\</CurrentTimeStamp\>
+--
+xp_time_dots :: PU UTCTime
+xp_time_dots =
+ (to_time, from_time) `xpWrapMaybe` xpText
+ where
+ -- | The hours arent padded with zeros.
+ nopad_time_format :: String
+ nopad_time_format = "%-I:%M %p"
+
+ to_time :: String -> Maybe UTCTime
+ to_time = (parseTime defaultTimeLocale nopad_time_format) . (replace "." "")