forked from filipg/twilight-library
65 lines
2.8 KiB
Haskell
65 lines
2.8 KiB
Haskell
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{-# LANGUAGE Arrows, NoMonomorphismRestriction #-}
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import ShadowLibrary.Core
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import Text.XML.HXT.Core
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import Text.XML.HXT.XPath
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import Data.List
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import Data.List.Utils (replace)
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import Text.Regex.Posix
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import Text.Printf
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getLinkAndText xpathCondition = proc doc -> do
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xpathTrees <- getXPathTrees xpathCondition -< doc
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name <- getElemName -< xpathTrees
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txt <- (listA (deep isText >>> getText) >>> arr (intercalate " ")) -< xpathTrees
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href <- (getXPathTrees "//a" >>> getAttrValue "href") -< xpathTrees
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returnA -< (href, txt)
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extractNestedLinksWithText xpathCondition = proc url -> do
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doc <- downloadDocument -< url
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(link, text) <- getLinkAndText xpathCondition -< doc
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uriFixed <- expandURIFixed -< (link, url)
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returnA -< (uriFixed, text)
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extractRecords = proc startUrl -> do
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-- (catUrl, catText) <- extractLinksWithText "(//aside[@class='widget widget_maxmegamenu']//a[@class='mega-menu-link'])[1]" -< startUrl -- pary adres-tytuł podstrony
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(catUrl, catText) <- extractLinksWithText "//aside[@class='widget widget_maxmegamenu']//a[@class='mega-menu-link']" -< startUrl -- pary adres-tytuł podstrony
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(collUrl, collText) <- (extractLinksWithText "//aside[@class='widget widget_maxmegamenu']//a[@class='mega-menu-link']") -< catUrl -- pobieramy podstronę kategorii i kolejne podstrony z menu
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(relUrl, relText) <- (extractNestedLinksWithText "//big[a[contains(@href,'.pdf') and contains(text(), 'Pobierz PDF')]]") -< collUrl -- pobieramy stronę z wydaniami z danej kolekcji i linki do PDFów
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returnA -< (((relUrl, relText), collText), catText) -- ostatecznie wyjdą krotki (((adres URL PDFa wydania, tytuł wydania), tytuł zbioru), tytuł kategorii)
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-- ... a tutaj te krotki przerabiamy do docelowej struktury ShadowItem
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toShadowItem :: (((String, String), String), String) -> ShadowItem
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toShadowItem (((url, releaseTitle), collectionTitle), categoryTitle) =
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(defaultShadowItem url title) {
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originalDate = Just date,
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itype = "periodical",
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format = Just "pdf",
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finalUrl = url
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}
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where title = categoryTitle ++ (" " ++ collectionTitle)
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date = getDate $ releaseTitle
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getDate yearlyTitle =
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case yearlyTitle =~~ "/(19[0-9][0-9]|20[0-9][0-9])/" :: Maybe [[String]] of
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Just [[_, year]] -> year
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-- otherwise -> error $ "unexpected yearlyTitle: " ++ yearlyTitle
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otherwise -> yearlyTitle
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main = do
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let start = "http://zborbielawa.pl/archiwum/"
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let shadowLibrary = ShadowLibrary {logoUrl=Nothing,
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lname="Zbór Bielawa",
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abbrev="ZboBiel",
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lLevel=0,
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webpage=start}
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extractItemsStartingFromUrl shadowLibrary start (extractRecords >>> arr toShadowItem)
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