1 -- | (Un)picklers for data types present in The Sports Network XML
9 import Data.Time.Clock ( UTCTime )
10 import Data.Time.Format ( formatTime, parseTime )
11 import System.Locale ( defaultTimeLocale )
12 import Text.Printf ( printf )
13 import Text.Read ( readMaybe )
14 import Text.XML.HXT.Arrow.Pickle (
18 import Text.XML.HXT.Arrow.Pickle.Xml ( PU )
20 instance XmlPickler Bool where
22 (to_bool, from_bool) `xpWrapMaybe` xpText
24 to_bool :: String -> Maybe Bool
27 from_bool :: Bool -> String
31 -- | (Un)pickle a UTCTime without the time portion.
35 (to_date, from_date) `xpWrapMaybe` xpText
39 to_date :: String -> Maybe UTCTime
40 to_date = parseTime defaultTimeLocale format
42 from_date :: UTCTime -> String
43 from_date = formatTime defaultTimeLocale format
46 -- | Parse a team_id. This *should* just be an 'Int', but TSN is doing
47 -- something weird. First of all, player IDs do look like normal
48 -- 'Int's. But the team IDs are all stuck in the triple digits, and
49 -- double-digit team IDs appear to be padded to three characters
50 -- with a leading '0'. So maybe they're treating these as text?
52 -- In any case, we do the simplest thing that is correct for all the
53 -- XML we've got: pad it to (only) three digits on pickling.
57 (to_team_id, from_team_id) `xpWrapMaybe` xpText
59 to_team_id :: String -> Maybe Int
60 to_team_id = readMaybe
62 from_team_id :: Int -> String
63 from_team_id = printf "%03d"