{-# LANGUAGE Arrows, NoMonomorphismRestriction #-} import ShadowLibrary.Core import Text.XML.HXT.Core import Text.XML.HXT.XPath import Data.List import Data.List.Utils (replace) import Text.Regex.Posix import Text.Printf getLinkAndText xpathCondition = proc doc -> do xpathTrees <- getXPathTrees xpathCondition -< doc name <- getElemName -< xpathTrees txt <- (listA (deep isText >>> getText) >>> arr (intercalate " ")) -< xpathTrees href <- (getXPathTrees "//a" >>> getAttrValue "href") -< xpathTrees returnA -< (href, txt) extractNestedLinksWithText xpathCondition = proc url -> do doc <- downloadDocument -< url (link, text) <- getLinkAndText xpathCondition -< doc uriFixed <- expandURIFixed -< (link, url) returnA -< (uriFixed, text) extractRecords = proc x -> do (a, b) <- extractLinksWithText "//aside[@class='widget widget_maxmegamenu']//a[@class='mega-menu-link']" -< x -- pary adres-tytuł podstrony (a', b') <- extractLinksWithText "//aside[@class='widget widget_maxmegamenu']//a[@class='mega-menu-link']" -< a -- pobieramy podstronę i kolejne podstrony z menu a'' <- extractNestedLinksWithText "(//big[a[contains(@href,'.pdf')][img]])[1]" -< a' -- pobieramy stronę z adresu URL i wyciągamy linki z tej strony pasujące do wyrażenia XPathowego returnA -< ((a'', b'), b) -- ostatecznie wyjdą krotki (((adres URL, tytuł nr-u), tytuł podstrony 2), tytuł podstrony 1) -- ... a tutaj te krotki przerabiamy do docelowej struktury ShadowItem toShadowItem :: (((String, String), String), String) -> ShadowItem toShadowItem (((url, releaseTitle), collectionTitle), categoryTitle) = (defaultShadowItem url title) { originalDate = Just date, itype = "periodical", format = Just "pdf", finalUrl = url } where title = categoryTitle ++ (" " ++ collectionTitle) date = getDate $ releaseTitle getDate yearlyTitle = case yearlyTitle =~~ "/(19[0-9][0-9]|20[0-9][0-9])/" :: Maybe [[String]] of Just [[_, year]] -> year -- otherwise -> error $ "unexpected yearlyTitle: " ++ yearlyTitle otherwise -> yearlyTitle main = do let start = "http://zborbielawa.pl/archiwum/" let shadowLibrary = ShadowLibrary {logoUrl=Nothing, lname="Zbór Bielawa", abbrev="ZboBiel", lLevel=0, webpage=start} extractItemsStartingFromUrl shadowLibrary start (extractRecords >>> arr toShadowItem)