76 lines
2.0 KiB
Haskell
76 lines
2.0 KiB
Haskell
{-# LANGUAGE QuasiQuotes #-}
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---------------------------------------------------------
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--
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-- Module : Yesod.Helpers.Sitemap
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-- Copyright : Michael Snoyman
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-- License : BSD3
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--
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-- Maintainer : Michael Snoyman <michael@snoyman.com>
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-- Stability : Stable
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-- Portability : portable
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--
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-- Generating Google sitemap files.
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--
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---------------------------------------------------------
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module Yesod.Helpers.Sitemap
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( sitemap
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, robots
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, SitemapUrl (..)
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, SitemapChangeFreq (..)
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) where
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import Yesod
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import Web.Encodings (formatW3)
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import Data.Time (UTCTime)
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data SitemapChangeFreq = Always
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| Hourly
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| Daily
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| Weekly
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| Monthly
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| Yearly
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| Never
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showFreq :: SitemapChangeFreq -> String
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showFreq Always = "always"
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showFreq Hourly = "hourly"
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showFreq Daily = "daily"
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showFreq Weekly = "weekly"
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showFreq Monthly = "monthly"
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showFreq Yearly = "yearly"
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showFreq Never = "never"
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{- FIXME
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instance ConvertSuccess SitemapChangeFreq Html where
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convertSuccess = (cs :: String -> Html) . cs
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-}
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data SitemapUrl url = SitemapUrl
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{ sitemapLoc :: url
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, sitemapLastMod :: UTCTime
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, sitemapChangeFreq :: SitemapChangeFreq
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, priority :: Double
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}
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sitemapNS :: [SitemapUrl url] -> HtmlContent
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sitemapNS _ = cs "http://www.sitemaps.org/schemas/sitemap/0.9"
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template :: [SitemapUrl url] -> Hamlet url IO ()
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template = [$hamlet|
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%urlset!xmlns=$sitemapNS$
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$forall id url
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%url
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%loc @url.sitemapLoc@
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%lastmod $url.sitemapLastMod.formatW3.cs$
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%changefreq $url.sitemapChangeFreq.showFreq.cs$
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%priority $url.priority.show.cs$
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|]
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sitemap :: [SitemapUrl (Routes sub)] -> GHandler sub master RepXml
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sitemap = fmap RepXml . hamletToContent . template
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robots :: Routes sub -- ^ sitemap url
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-> GHandler sub master RepPlain
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robots smurl = do
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r <- getUrlRender
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return $ RepPlain $ cs $ "Sitemap: " ++ r smurl
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