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An option to control whether entities are converted during rendering.
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@ -15,28 +15,34 @@ import Text.Taggy.DOM (Element(..), Node(..))
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import qualified Data.Text.Lazy as Lazy (Text)
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import Text.Blaze.Internal (ChoiceString(..), StaticString(..), MarkupM(..))
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-- renderMarkup does entity conversion implicitly, and an override at the
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-- constructor level is needed to control this; `PreEscaped (Text s)` is not
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-- escaped, but a naked `Text s` is.
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class AsMarkup a where
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toMarkup :: a -> Markup
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-- If the first parameter is true, we align the constructors for entity
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-- conversion.
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toMarkup :: Bool -> a -> Markup
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instance AsMarkup Node where
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toMarkup = \case
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NodeContent text -> Content $ Text text
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NodeElement elmt -> toMarkup elmt
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toMarkup convertEntities = \case
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NodeContent text -> Content $ if convertEntities then Text text else PreEscaped (Text text)
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NodeElement elmt -> toMarkup convertEntities elmt
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instance AsMarkup Element where
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toMarkup Element{..} = eltAttrs `toAttribute` Parent tag begin end kids
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toMarkup convertEntities Element{..} = eltAttrs `toAttribute` Parent tag begin end kids
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where tag = toStatic eltName
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begin = toStatic $ "<" <> eltName
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end = toStatic $ "</" <> eltName <> ">"
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kids = foldMap toMarkup eltChildren
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kids = foldMap (toMarkup convertEntities) eltChildren
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class Renderable a where
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render :: a -> Lazy.Text
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render = renderWith True
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renderWith :: Bool -> a -> Lazy.Text
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instance AsMarkup a => Renderable a where
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render = renderMarkup . toMarkup
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------------------------------------------------------------------------
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renderWith = fmap renderMarkup . toMarkup
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toAttribute :: HashMap Text Text -> (Markup -> Markup)
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toAttribute = flip $ foldlWithKey' toAttribute'
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@ -15,3 +15,10 @@ spec = do
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render node `shouldBe` doc
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it "Should render a given element." $ do
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render elmt `shouldBe` doc
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describe "renderWith" $ do
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let document = "<span>I ♥ you!</span>"
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element = (\(NodeElement e) -> e) . head . domify $ taggyWith False document
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it "Should escape HTML entities when the first argument is True." $ do
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renderWith True element `shouldBe` "<span>I &hearts; you!</span>"
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it "Shouldn't escape HTML entities when the first argument is False." $ do
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renderWith False element `shouldBe` document
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