module MediaWiki.API.Query.Categories.Import where
import MediaWiki.API.Types
import MediaWiki.API.Utils
import MediaWiki.API.Query.Categories
import Text.XML.Light.Types
import Control.Monad
import Data.Maybe
stringXml :: String -> Either (String,[String]) CategoriesResponse
stringXml s = parseDoc xml s
xml :: Element -> Maybe CategoriesResponse
xml e = do
guard (elName e == nsName "api")
let es1 = children e
p <- pNode "query" es1
let es2 = children p
p <- pNode "pages" es2
let es = children p
ps <- fmap (mapMaybe xmlPage) (fmap children $ pNode "page" es)
let cont = pNode "query-continue" es1 >>= xmlContinue "categories" "clcontinue"
return emptyCategoriesResponse{clPages=ps,clContinue=cont}
xmlPage :: Element -> Maybe (PageTitle,[PageTitle])
xmlPage e = do
guard (elName e == nsName "page")
let es = children e
p <- pNode "categories" es
let es1 = children p
cs <- fmap (mapMaybe xmlCL) (fmap children $ pNode "cl" es1)
let ns = fromMaybe "0" $ pAttr "ns" p
let tit = fromMaybe "" $ pAttr "title" p
let mbpid = pAttr "pageid" p
return (emptyPageTitle{pgNS=ns,pgTitle=tit,pgMbId=mbpid}, cs)
xmlCL :: Element -> Maybe PageTitle
xmlCL e = do
guard (elName e == nsName "cl")
let ns = fromMaybe "0" $ pAttr "ns" e
let tit = fromMaybe "" $ pAttr "title" e
let mbpid = pAttr "pageid" e
return emptyPageTitle{pgNS=ns,pgTitle=tit,pgMbId=mbpid}