. -- Assumes notes are sorted. footnoteSection :: WriterOptions -> [Html] -> Html footnoteSection opts notes = if null notes then mempty else nl opts >> (container $ nl opts >> hrtag >> nl opts >> H.ol (mconcat notes >> nl opts) >> nl opts) where container x = if writerHtml5 opts then H5.section ! A.class_ "footnotes" $ x else if writerSlideVariant opts /= NoSlides then H.div ! A.class_ "footnotes slide" $ x else H.div ! A.class_ "footnotes" $ x hrtag = if writerHtml5 opts then H5.hr else H.hr -- | Parse a mailto link; return Just (name, domain) or Nothing. parseMailto :: String -> Maybe (String, String) parseMailto ('m':'a':'i':'l':'t':'o':':':addr) = let (name', rest) = span (/='@') addr domain = drop 1 rest in Just (name', domain) parseMailto _ = Nothing -- | Obfuscate a "mailto:" link. obfuscateLink :: WriterOptions -> String -> String -> Html obfuscateLink opts txt s | writerEmailObfuscation opts == NoObfuscation = H.a ! A.href (toValue s) $ toHtml txt obfuscateLink opts txt s = let meth = writerEmailObfuscation opts s' = map toLower s in case parseMailto s' of (Just (name', domain)) -> let domain' = substitute "." " dot " domain at' = obfuscateChar '@' (linkText, altText) = if txt == drop 7 s' -- autolink then ("e", name' ++ " at " ++ domain') else ("'" ++ txt ++ "'", txt ++ " (" ++ name' ++ " at " ++ domain' ++ ")") in case meth of ReferenceObfuscation -> -- need to use preEscapedString or &'s are escaped to & in URL preEscapedString $ "" ++ (obfuscateString txt) ++ "" JavascriptObfuscation -> (H.script ! A.type_ "text/javascript" $ preEscapedString ("\n\n")) >> H.noscript (preEscapedString $ obfuscateString altText) _ -> error $ "Unknown obfuscation method: " ++ show meth _ -> H.a ! A.href (toValue s) $ toHtml txt -- malformed email -- | Obfuscate character as entity. obfuscateChar :: Char -> String obfuscateChar char = let num = ord char numstr = if even num then show num else "x" ++ showHex num "" in "&#" ++ numstr ++ ";" -- | Obfuscate string using entities. obfuscateString :: String -> String obfuscateString = concatMap obfuscateChar . fromEntities addAttrs :: WriterOptions -> Attr -> Html -> Html addAttrs opts attr h = foldl (!) h (attrsToHtml opts attr) attrsToHtml :: WriterOptions -> Attr -> [Attribute] attrsToHtml opts (id',classes',keyvals) = [prefixedId opts id' | not (null id')] ++ [A.class_ (toValue $ unwords classes') | not (null classes')] ++ map (\(x,y) -> customAttribute (fromString x) (toValue y)) keyvals imageExts :: [String] imageExts = [ "art", "bmp", "cdr", "cdt", "cpt", "cr2", "crw", "djvu", "erf", "gif", "ico", "ief", "jng", "jpg", "jpeg", "nef", "orf", "pat", "pbm", "pcx", "pgm", "png", "pnm", "ppm", "psd", "ras", "rgb", "svg", "tiff", "wbmp", "xbm", "xpm", "xwd" ] treatAsImage :: FilePath -> Bool treatAsImage fp = let ext = map toLower $ drop 1 $ takeExtension fp in null ext || ext `elem` imageExts -- | Convert Pandoc block element to HTML. blockToHtml :: WriterOptions -> Block -> State WriterState Html blockToHtml _ Null = return mempty blockToHtml opts (Plain lst) = inlineListToHtml opts lst -- title beginning with fig: indicates that the image is a figure blockToHtml opts (Para [Image txt (s,'f':'i':'g':':':tit)]) = do img <- inlineToHtml opts (Image txt (s,tit)) let tocapt = if writerHtml5 opts then H5.figcaption else H.p ! A.class_ "caption" capt <- if null txt then return mempty else tocapt `fmap` inlineListToHtml opts txt return $ if writerHtml5 opts then H5.figure $ mconcat [nl opts, img, capt, nl opts] else H.div ! A.class_ "figure" $ mconcat [nl opts, img, capt, nl opts] blockToHtml opts (Para lst) = do contents <- inlineListToHtml opts lst return $ H.p contents blockToHtml _ (RawBlock "html" str) = return $ preEscapedString str blockToHtml _ (RawBlock _ _) = return mempty blockToHtml opts (HorizontalRule) = return $ if writerHtml5 opts then H5.hr else H.hr blockToHtml opts (CodeBlock (id',classes,keyvals) rawCode) = do let tolhs = isEnabled Ext_literate_haskell opts && any (\c -> map toLower c == "haskell") classes && any (\c -> map toLower c == "literate") classes classes' = if tolhs then map (\c -> if map toLower c == "haskell" then "literatehaskell" else c) classes else classes adjCode = if tolhs then unlines . map ("> " ++) . lines $ rawCode else rawCode case highlight formatHtmlBlock (id',classes',keyvals) adjCode of Nothing -> return $ addAttrs opts (id',classes,keyvals) $ H.pre $ H.code $ toHtml adjCode Just h -> modify (\st -> st{ stHighlighting = True }) >> return (addAttrs opts (id',[],keyvals) h) blockToHtml opts (BlockQuote blocks) = -- in S5, treat list in blockquote specially -- if default is incremental, make it nonincremental; -- otherwise incremental if writerSlideVariant opts /= NoSlides then let inc = not (writerIncremental opts) in case blocks of [BulletList lst] -> blockToHtml (opts {writerIncremental = inc}) (BulletList lst) [OrderedList attribs lst] -> blockToHtml (opts {writerIncremental = inc}) (OrderedList attribs lst) _ -> do contents <- blockListToHtml opts blocks return $ H.blockquote $ nl opts >> contents >> nl opts else do contents <- blockListToHtml opts blocks return $ H.blockquote $ nl opts >> contents >> nl opts blockToHtml opts (Header level (ident,_,_) lst) = do contents <- inlineListToHtml opts lst secnum <- liftM stSecNum get let contents' = if writerNumberSections opts && not (null secnum) then (H.span ! A.class_ "header-section-number" $ toHtml $ showSecNum secnum) >> strToHtml " " >> contents else contents let contents'' = if writerTableOfContents opts && not (null ident) then H.a ! A.href (toValue $ '#' : writerIdentifierPrefix opts ++ ident) $ contents' else contents' return $ case level of 1 -> H.h1 contents'' 2 -> H.h2 contents'' 3 -> H.h3 contents'' 4 -> H.h4 contents'' 5 -> H.h5 contents'' 6 -> H.h6 contents'' _ -> H.p contents'' blockToHtml opts (BulletList lst) = do contents <- mapM (blockListToHtml opts) lst let lst' = unordList opts contents let lst'' = if writerIncremental opts then lst' ! A.class_ "incremental" else lst' return lst'' blockToHtml opts (OrderedList (startnum, numstyle, _) lst) = do contents <- mapM (blockListToHtml opts) lst let numstyle' = camelCaseToHyphenated $ show numstyle let attribs = (if writerIncremental opts then [A.class_ "incremental"] else []) ++ (if startnum /= 1 then [A.start $ toValue startnum] else []) ++ (if numstyle /= DefaultStyle then if writerHtml5 opts then [A.type_ $ case numstyle of Decimal -> "1" LowerAlpha -> "a" UpperAlpha -> "A" LowerRoman -> "i" UpperRoman -> "I" _ -> "1"] else [A.style $ toValue $ "list-style-type: " ++ numstyle'] else []) return $ foldl (!) (ordList opts contents) attribs blockToHtml opts (DefinitionList lst) = do contents <- mapM (\(term, defs) -> do term' <- if null term then return mempty else liftM (H.dt) $ inlineListToHtml opts term defs' <- mapM ((liftM (\x -> H.dd $ (x >> nl opts))) . blockListToHtml opts) defs return $ mconcat $ nl opts : term' : nl opts : intersperse (nl opts) defs') lst let lst' = H.dl $ mconcat contents >> nl opts let lst'' = if writerIncremental opts then lst' ! A.class_ "incremental" else lst' return lst'' blockToHtml opts (Table capt aligns widths headers rows') = do captionDoc <- if null capt then return mempty else do cs <- inlineListToHtml opts capt return $ H.caption cs >> nl opts let percent w = show (truncate (100*w) :: Integer) ++ "%" let coltags = if all (== 0.0) widths then mempty else mconcat $ map (\w -> if writerHtml5 opts then H.col ! A.style (toValue $ "width: " ++ percent w) else H.col ! A.width (toValue $ percent w) >> nl opts) widths head' <- if all null headers then return mempty else do contents <- tableRowToHtml opts aligns 0 headers return $ H.thead (nl opts >> contents) >> nl opts body' <- liftM (\x -> H.tbody (nl opts >> mconcat x)) $ zipWithM (tableRowToHtml opts aligns) [1..] rows' return $ H.table $ nl opts >> captionDoc >> coltags >> head' >> body' >> nl opts tableRowToHtml :: WriterOptions -> [Alignment] -> Int -> [[Block]] -> State WriterState Html tableRowToHtml opts aligns rownum cols' = do let mkcell = if rownum == 0 then H.th else H.td let rowclass = case rownum of 0 -> "header" x | x `rem` 2 == 1 -> "odd" _ -> "even" cols'' <- sequence $ zipWith (\alignment item -> tableItemToHtml opts mkcell alignment item) aligns cols' return $ (H.tr ! A.class_ rowclass $ nl opts >> mconcat cols'') >> nl opts alignmentToString :: Alignment -> [Char] alignmentToString alignment = case alignment of AlignLeft -> "left" AlignRight -> "right" AlignCenter -> "center" AlignDefault -> "left" tableItemToHtml :: WriterOptions -> (Html -> Html) -> Alignment -> [Block] -> State WriterState Html tableItemToHtml opts tag' align' item = do contents <- blockListToHtml opts item let alignStr = alignmentToString align' let attribs = if writerHtml5 opts then A.style (toValue $ "text-align: " ++ alignStr ++ ";") else A.align (toValue alignStr) return $ (tag' ! attribs $ contents) >> nl opts toListItems :: WriterOptions -> [Html] -> [Html] toListItems opts items = map (toListItem opts) items ++ [nl opts] toListItem :: WriterOptions -> Html -> Html toListItem opts item = nl opts >> H.li item blockListToHtml :: WriterOptions -> [Block] -> State WriterState Html blockListToHtml opts lst = mapM (blockToHtml opts) lst >>= return . mconcat . intersperse (nl opts) -- | Convert list of Pandoc inline elements to HTML. inlineListToHtml :: WriterOptions -> [Inline] -> State WriterState Html inlineListToHtml opts lst = mapM (inlineToHtml opts) lst >>= return . mconcat -- | Convert Pandoc inline element to HTML. inlineToHtml :: WriterOptions -> Inline -> State WriterState Html inlineToHtml opts inline = case inline of (Str str) -> return $ strToHtml str (Space) -> return $ strToHtml " " (LineBreak) -> return $ if writerHtml5 opts then H5.br else H.br (Emph lst) -> inlineListToHtml opts lst >>= return . H.em (Strong lst) -> inlineListToHtml opts lst >>= return . H.strong (Code attr str) -> case highlight formatHtmlInline attr str of Nothing -> return $ addAttrs opts attr $ H.code $ strToHtml str Just h -> do modify $ \st -> st{ stHighlighting = True } return $ addAttrs opts (id',[],keyvals) h where (id',_,keyvals) = attr (Strikeout lst) -> inlineListToHtml opts lst >>= return . H.del (SmallCaps lst) -> inlineListToHtml opts lst >>= return . (H.span ! A.style "font-variant: small-caps;") (Superscript lst) -> inlineListToHtml opts lst >>= return . H.sup (Subscript lst) -> inlineListToHtml opts lst >>= return . H.sub (Quoted quoteType lst) -> let (leftQuote, rightQuote) = case quoteType of SingleQuote -> (strToHtml "‘", strToHtml "’") DoubleQuote -> (strToHtml "“", strToHtml "”") in if writerHtmlQTags opts then do modify $ \st -> st{ stQuotes = True } H.q `fmap` inlineListToHtml opts lst else (\x -> leftQuote >> x >> rightQuote) `fmap` inlineListToHtml opts lst (Math t str) -> modify (\st -> st {stMath = True}) >> (case writerHTMLMathMethod opts of LaTeXMathML _ -> -- putting LaTeXMathML in container with class "LaTeX" prevents -- non-math elements on the page from being treated as math by -- the javascript return $ H.span ! A.class_ "LaTeX" $ case t of InlineMath -> toHtml ("$" ++ str ++ "$") DisplayMath -> toHtml ("$$" ++ str ++ "$$") JsMath _ -> do let m = preEscapedString str return $ case t of InlineMath -> H.span ! A.class_ "math" $ m DisplayMath -> H.div ! A.class_ "math" $ m WebTeX url -> do let imtag = if writerHtml5 opts then H5.img else H.img let m = imtag ! A.style "vertical-align:middle" ! A.src (toValue $ url ++ urlEncode str) ! A.alt (toValue str) ! A.title (toValue str) let brtag = if writerHtml5 opts then H5.br else H.br return $ case t of InlineMath -> m DisplayMath -> brtag >> m >> brtag GladTeX -> return $ case t of InlineMath -> preEscapedString $ "" ++ str ++ "" DisplayMath -> preEscapedString $ "" ++ str ++ "" MathML _ -> do let dt = if t == InlineMath then DisplayInline else DisplayBlock let conf = useShortEmptyTags (const False) defaultConfigPP case texMathToMathML dt str of Right r -> return $ preEscapedString $ ppcElement conf r Left _ -> inlineListToHtml opts (readTeXMath str) >>= return . (H.span ! A.class_ "math") MathJax _ -> return $ H.span ! A.class_ "math" $ toHtml $ case t of InlineMath -> "\$" ++ str ++ "\$" DisplayMath -> "\\[" ++ str ++ "\\]" PlainMath -> do x <- inlineListToHtml opts (readTeXMath str) let m = H.span ! A.class_ "math" $ x let brtag = if writerHtml5 opts then H5.br else H.br return $ case t of InlineMath -> m DisplayMath -> brtag >> m >> brtag ) (RawInline "latex" str) -> case writerHTMLMathMethod opts of LaTeXMathML _ -> do modify (\st -> st {stMath = True}) return $ toHtml str _ -> return mempty (RawInline "html" str) -> return $ preEscapedString str (RawInline _ _) -> return mempty (Link [Str str] (s,_)) | "mailto:" `isPrefixOf` s && s == escapeURI ("mailto" ++ str) -> -- autolink return $ obfuscateLink opts str s (Link txt (s,_)) | "mailto:" `isPrefixOf` s -> do linkText <- inlineListToHtml opts txt return $ obfuscateLink opts (renderHtml linkText) s (Link txt (s,tit)) -> do linkText <- inlineListToHtml opts txt let link = H.a ! A.href (toValue s) $ linkText return $ if null tit then link else link ! A.title (toValue tit) (Image txt (s,tit)) | treatAsImage s -> do let alternate' = stringify txt let attributes = [A.src $ toValue s] ++ (if null tit then [] else [A.title $ toValue tit]) ++ if null txt then [] else [A.alt $ toValue alternate'] let tag = if writerHtml5 opts then H5.img else H.img return $ foldl (!) tag attributes -- note: null title included, as in Markdown.pl (Image _ (s,tit)) -> do let attributes = [A.src $ toValue s] ++ (if null tit then [] else [A.title $ toValue tit]) return $ foldl (!) H5.embed attributes -- note: null title included, as in Markdown.pl (Note contents) -> do st <- get let notes = stNotes st let number = (length notes) + 1 let ref = show number htmlContents <- blockListToNote opts ref contents -- push contents onto front of notes put $ st {stNotes = (htmlContents:notes)} let link = H.a ! A.href (toValue $ "#" ++ writerIdentifierPrefix opts ++ "fn" ++ ref) ! A.class_ "footnoteRef" ! prefixedId opts ("fnref" ++ ref) $ toHtml ref let link' = case writerEpubVersion opts of Just EPUB3 -> link ! customAttribute "epub:type" "noteref" _ -> link return $ H.sup $ link' (Cite cits il)-> do contents <- inlineListToHtml opts il let citationIds = unwords $ map citationId cits let result = H.span ! A.class_ "citation" $ contents return $ if writerHtml5 opts then result ! customAttribute "data-cites" (toValue citationIds) else result blockListToNote :: WriterOptions -> String -> [Block] -> State WriterState Html blockListToNote opts ref blocks = -- If last block is Para or Plain, include the backlink at the end of -- that block. Otherwise, insert a new Plain block with the backlink. let backlink = [Link [Str "↩"] ("#" ++ writerIdentifierPrefix opts ++ "fnref" ++ ref,[])] blocks' = if null blocks then [] else let lastBlock = last blocks otherBlocks = init blocks in case lastBlock of (Para lst) -> otherBlocks ++ [Para (lst ++ backlink)] (Plain lst) -> otherBlocks ++ [Plain (lst ++ backlink)] _ -> otherBlocks ++ [lastBlock, Plain backlink] in do contents <- blockListToHtml opts blocks' let noteItem = H.li ! (prefixedId opts ("fn" ++ ref)) $ contents let noteItem' = case writerEpubVersion opts of Just EPUB3 -> noteItem ! customAttribute "epub:type" "footnote" _ -> noteItem return $ nl opts >> noteItem'