67ae9c739b
Conflicts: yesod-auth/Yesod/Auth.hs yesod-auth/Yesod/Auth/BrowserId.hs yesod-auth/Yesod/Auth/Dummy.hs yesod-auth/Yesod/Auth/Email.hs yesod-auth/Yesod/Auth/HashDB.hs yesod-auth/Yesod/Auth/OpenId.hs yesod-auth/Yesod/Auth/Rpxnow.hs yesod-form/Yesod/Form/Fields.hs yesod-form/Yesod/Form/Functions.hs yesod-form/Yesod/Form/Jquery.hs yesod-form/Yesod/Form/Nic.hs yesod-form/Yesod/Helpers/Crud.hs yesod-newsfeed/Yesod/AtomFeed.hs yesod-newsfeed/Yesod/RssFeed.hs
71 lines
1.9 KiB
Haskell
71 lines
1.9 KiB
Haskell
{-# LANGUAGE QuasiQuotes #-}
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---------------------------------------------------------
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--
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-- Module : Yesod.AtomFeed
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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 atom news feeds.
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--
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---------------------------------------------------------
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-- | Generation of Atom newsfeeds.
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module Yesod.AtomFeed
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( atomFeed
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, atomLink
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, RepAtom (..)
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, module Yesod.FeedTypes
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) where
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import Yesod.Core
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import Yesod.FeedTypes
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import Text.Hamlet (HtmlUrl, xhamlet, hamlet)
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import qualified Data.ByteString.Char8 as S8
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import Control.Monad (liftM)
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import Data.Text (Text)
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newtype RepAtom = RepAtom Content
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instance HasReps RepAtom where
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chooseRep (RepAtom c) _ = return (typeAtom, c)
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atomFeed :: Feed (Route master) -> GHandler sub master RepAtom
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atomFeed = liftM RepAtom . hamletToContent . template
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template :: Feed url -> HtmlUrl url
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template arg = [xhamlet|
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\<?xml version="1.0" encoding="utf-8"?>
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<feed xmlns="http://www.w3.org/2005/Atom">
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<title>#{feedTitle arg}
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<link rel=self href=@{feedLinkSelf arg}>
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<link href=@{feedLinkHome arg}>
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<updated>#{formatW3 $ feedUpdated arg}
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<id>@{feedLinkHome arg}
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$forall entry <- feedEntries arg
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^{entryTemplate entry}
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|]
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entryTemplate :: FeedEntry url -> HtmlUrl url
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entryTemplate arg = [xhamlet|
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<entry>
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<id>@{feedEntryLink arg}
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<link href=@{feedEntryLink arg}>
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<updated>#{formatW3 $ feedEntryUpdated arg}
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<title>#{feedEntryTitle arg}
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<content type=html>
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\<![CDATA[
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\#{feedEntryContent arg}
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]]>
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|]
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-- | Generates a link tag in the head of a widget.
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atomLink :: Route m
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-> Text -- ^ title
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-> GWidget s m ()
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atomLink r title = toWidgetHead [hamlet|
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<link href=@{r} type=#{S8.unpack typeAtom} rel="alternate" title=#{title}>
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|]
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