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{-# LANGUAGE OverloadedStrings #-}
{- |
Module : Text.Pandoc.Writers.Native
Copyright : Copyright (C) 2006-2021 John MacFarlane
License : GNU GPL, version 2 or above
Maintainer : John MacFarlane <jgm@berkeley.edu>
Stability : alpha
Portability : portable
Conversion of a 'Pandoc' document to a string representation.
-}
module Text.Pandoc.Writers.Native ( writeNative )
where
import Data.List (intersperse)
import Data.Text (Text)
import Text.Pandoc.Class.PandocMonad (PandocMonad)
import Text.Pandoc.Definition
import Text.Pandoc.Options (WrapOption (..), WriterOptions (..))
import Text.DocLayout
prettyList :: [Doc Text] -> Doc Text
prettyList ds =
"[" <>
mconcat (intersperse (cr <> ",") $ map (nest 1) ds) <> "]"
-- | Prettyprint Pandoc block element.
prettyBlock :: Block -> Doc Text
prettyBlock (LineBlock lines') =
"LineBlock" $$ prettyList (map (text . show) lines')
prettyBlock (BlockQuote blocks) =
"BlockQuote" $$ prettyList (map prettyBlock blocks)
prettyBlock (OrderedList attribs blockLists) =
"OrderedList" <> space <> text (show attribs) $$
prettyList (map (prettyList . map prettyBlock) blockLists)
prettyBlock (BulletList blockLists) =
"BulletList" $$
prettyList (map (prettyList . map prettyBlock) blockLists)
prettyBlock (DefinitionList items) = "DefinitionList" $$
prettyList (map deflistitem items)
where deflistitem (term, defs) = "(" <> text (show term) <> "," <> cr <>
nest 1 (prettyList $ map (prettyList . map prettyBlock) defs) <> ")"
prettyBlock (Table attr blkCapt specs thead tbody tfoot) =
mconcat [ "Table "
, text (show attr)
, " "
, prettyCaption blkCapt ] $$
prettyList (map (text . show) specs) $$
prettyHead thead $$
prettyBodies tbody $$
prettyFoot tfoot
where prettyRows = prettyList . map prettyRow
prettyRow (Row a body) =
text ("Row " <> show a) $$ prettyList (map prettyCell body)
prettyCell (Cell a ma h w b) =
mconcat [ "Cell "
, text (show a)
, " "
, text (show ma)
, " ("
, text (show h)
, ") ("
, text (show w)
, ")" ] $$
prettyList (map prettyBlock b)
prettyCaption (Caption mshort body) =
"(Caption " <> text (showsPrec 11 mshort "") $$ prettyList (map prettyBlock body) <> ")"
prettyHead (TableHead thattr body)
= "(TableHead " <> text (show thattr) $$ prettyRows body <> ")"
prettyBody (TableBody tbattr rhc hd bd)
= mconcat [ "(TableBody "
, text (show tbattr)
, " ("
, text (show rhc)
, ")" ] $$ prettyRows hd $$ prettyRows bd <> ")"
prettyBodies = prettyList . map prettyBody
prettyFoot (TableFoot tfattr body)
= "(TableFoot " <> text (show tfattr) $$ prettyRows body <> ")"
prettyBlock (Div attr blocks) =
text ("Div " <> show attr) $$ prettyList (map prettyBlock blocks)
prettyBlock block = text $ show block
-- | Prettyprint Pandoc document.
writeNative :: PandocMonad m => WriterOptions -> Pandoc -> m Text
writeNative opts (Pandoc meta blocks) = return $
let colwidth = if writerWrapText opts == WrapAuto
then Just $ writerColumns opts
else Nothing
withHead = case writerTemplate opts of
Just _ -> \bs -> text ("Pandoc (" ++ show meta ++ ")") $$
bs $$ cr
Nothing -> id
in render colwidth $ withHead $ prettyList $ map prettyBlock blocks
|
