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Format SqlRational as a decimal ... #43

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Format SqlRational as a decimal ... #43

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8 changes: 8 additions & 0 deletions Database/HDBC/PostgreSQL/Utils.hsc
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@ import Foreign.Storable
import Foreign.Marshal.Array
import Foreign.Marshal.Alloc
import Foreign.Marshal.Utils
import Data.Fixed (Pico, showFixed)
import Data.Word
import qualified Data.ByteString.UTF8 as BUTF8
import qualified Data.ByteString as B
Expand Down Expand Up @@ -76,12 +77,19 @@ withCStringArr0 inp action = withAnyArr0 convfunc freefunc inp action
convfunc y@(SqlUTCTime _) = convfunc (SqlZonedTime (fromSql y))
convfunc y@(SqlEpochTime _) = convfunc (SqlZonedTime (fromSql y))
convfunc (SqlByteString x) = cstrUtf8BString (cleanUpBSNulls x)
convfunc (SqlRational rat) = cstrUtf8BString (showRational rat)
convfunc x = cstrUtf8BString (fromSql x)
freefunc x =
if x == nullPtr
then return ()
else free x


{- | Helper that formats a 'Rational' using decimal. -}
showRational :: Rational -> B.ByteString
showRational rat = BCHAR8.pack $ showFixed True (fromRational rat :: Pico)


cleanUpBSNulls :: B.ByteString -> B.ByteString
cleanUpBSNulls bs | 0 `B.notElem` bs = bs
| otherwise = B.concatMap convfunc bs
Expand Down