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{-# LANGUAGE OverloadedStrings #-}
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{-
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Copyright (C) 2006-2017 John MacFarlane <jgm@berkeley.edu>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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-}
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{- |
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Module : Text.Pandoc.Writers.Native
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Copyright : Copyright (C) 2006-2017 John MacFarlane
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License : GNU GPL, version 2 or above
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Maintainer : John MacFarlane <jgm@berkeley.edu>
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Stability : alpha
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Portability : portable
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Conversion of a 'Pandoc' document to a string representation.
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-}
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module Text.Pandoc.Writers.Native ( writeNative )
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where
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import Data.List (intersperse)
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import Data.Text (Text)
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import Text.Pandoc.Class (PandocMonad)
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import Text.Pandoc.Definition
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import Text.Pandoc.Options (WrapOption (..), WriterOptions (..))
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import Text.Pandoc.Pretty
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prettyList :: [Doc] -> Doc
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prettyList ds =
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"[" <>
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cat (intersperse (cr <> ",") $ map (nest 1) ds) <> "]"
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-- | Prettyprint Pandoc block element.
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prettyBlock :: Block -> Doc
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prettyBlock (LineBlock lines') =
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"LineBlock" $$ prettyList (map (text . show) lines')
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prettyBlock (BlockQuote blocks) =
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"BlockQuote" $$ prettyList (map prettyBlock blocks)
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prettyBlock (OrderedList attribs blockLists) =
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"OrderedList" <> space <> text (show attribs) $$
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prettyList (map (prettyList . map prettyBlock) blockLists)
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prettyBlock (BulletList blockLists) =
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"BulletList" $$
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prettyList (map (prettyList . map prettyBlock) blockLists)
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prettyBlock (DefinitionList items) = "DefinitionList" $$
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prettyList (map deflistitem items)
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where deflistitem (term, defs) = "(" <> text (show term) <> "," <> cr <>
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nest 1 (prettyList $ map (prettyList . map prettyBlock) defs) <> ")"
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prettyBlock (Table caption aligns widths header rows) =
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"Table " <> text (show caption) <> " " <> text (show aligns) <> " " <>
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text (show widths) $$
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prettyRow header $$
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prettyList (map prettyRow rows)
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where prettyRow cols = prettyList (map (prettyList . map prettyBlock) cols)
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prettyBlock (Div attr blocks) =
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text ("Div " <> show attr) $$ prettyList (map prettyBlock blocks)
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prettyBlock block = text $ show block
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-- | Prettyprint Pandoc document.
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writeNative :: PandocMonad m => WriterOptions -> Pandoc -> m Text
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writeNative opts (Pandoc meta blocks) = return $
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let colwidth = if writerWrapText opts == WrapAuto
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then Just $ writerColumns opts
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else Nothing
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withHead = case writerTemplate opts of
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Just _ -> \bs -> text ("Pandoc (" ++ show meta ++ ")") $$
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bs $$ cr
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Nothing -> id
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in render colwidth $ withHead $ prettyList $ map prettyBlock blocks
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