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Diffstat (limited to 'src/Text/Pandoc/Writers/Native.hs')
| -rw-r--r-- | src/Text/Pandoc/Writers/Native.hs | 86 |
1 files changed, 39 insertions, 47 deletions
diff --git a/src/Text/Pandoc/Writers/Native.hs b/src/Text/Pandoc/Writers/Native.hs index 3b5ea7481..d2b56cd17 100644 --- a/src/Text/Pandoc/Writers/Native.hs +++ b/src/Text/Pandoc/Writers/Native.hs @@ -1,3 +1,4 @@ +{-# LANGUAGE OverloadedStrings #-} {- Copyright (C) 2006-2010 John MacFarlane <jgm@berkeley.edu> @@ -25,62 +26,53 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Stability : alpha Portability : portable -Utility functions and definitions used by the various Pandoc modules. +Conversion of a 'Pandoc' document to a string representation. + +Note: If @writerStandalone@ is @False@, only the document body +is represented; otherwise, the full 'Pandoc' document, including the +metadata. -} module Text.Pandoc.Writers.Native ( writeNative ) where -import Text.Pandoc.Shared ( WriterOptions ) -import Data.List ( intercalate ) +import Text.Pandoc.Shared ( WriterOptions(..) ) +import Data.List ( intersperse ) import Text.Pandoc.Definition +import Text.Pandoc.Pretty --- | Indent string as a block. -indentBy :: Int -- ^ Number of spaces to indent the block - -> Int -- ^ Number of spaces (rel to block) to indent first line - -> String -- ^ Contents of block to indent - -> String -indentBy _ _ [] = "" -indentBy num first str = - let (firstLine:restLines) = lines str - firstLineIndent = num + first - in (replicate firstLineIndent ' ') ++ firstLine ++ "\n" ++ - (intercalate "\n" $ map ((replicate num ' ') ++ ) restLines) - --- | Prettyprint list of Pandoc blocks elements. -prettyBlockList :: Int -- ^ Number of spaces to indent list of blocks - -> [Block] -- ^ List of blocks - -> String -prettyBlockList indent [] = indentBy indent 0 "[]" -prettyBlockList indent blocks = indentBy indent (-2) $ "[ " ++ - (intercalate "\n, " (map prettyBlock blocks)) ++ " ]" +prettyList :: [Doc] -> Doc +prettyList ds = + "[" <> (cat $ intersperse (cr <> ",") $ map (nest 1) ds) <> "]" -- | Prettyprint Pandoc block element. -prettyBlock :: Block -> String -prettyBlock (BlockQuote blocks) = "BlockQuote\n " ++ - (prettyBlockList 2 blocks) +prettyBlock :: Block -> Doc +prettyBlock (BlockQuote blocks) = + "BlockQuote" $$ prettyList (map prettyBlock blocks) prettyBlock (OrderedList attribs blockLists) = - "OrderedList " ++ show attribs ++ "\n" ++ indentBy 2 0 ("[ " ++ - (intercalate ", " $ map (\blocks -> prettyBlockList 2 blocks) - blockLists)) ++ " ]" -prettyBlock (BulletList blockLists) = "BulletList\n" ++ - indentBy 2 0 ("[ " ++ (intercalate ", " - (map (\blocks -> prettyBlockList 2 blocks) blockLists))) ++ " ]" -prettyBlock (DefinitionList items) = "DefinitionList\n" ++ - indentBy 2 0 ("[ " ++ (intercalate "\n, " - (map (\(term, defs) -> "(" ++ show term ++ ",\n" ++ - indentBy 3 0 ("[ " ++ (intercalate ", " - (map (\blocks -> prettyBlockList 2 blocks) defs)) ++ "]") ++ - ")") items))) ++ " ]" + "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" $$ + (prettyList $ map deflistitem items) + where deflistitem (term, defs) = "(" <> text (show term) <> "," <> cr <> + nest 1 (prettyList $ map (prettyList . map prettyBlock) defs) <> ")" prettyBlock (Table caption aligns widths header rows) = - "Table " ++ show caption ++ " " ++ show aligns ++ " " ++ - show widths ++ "\n" ++ prettyRow header ++ " [\n" ++ - (intercalate ",\n" (map prettyRow rows)) ++ " ]" - where prettyRow cols = indentBy 2 0 ("[ " ++ (intercalate ", " - (map (\blocks -> prettyBlockList 2 blocks) - cols))) ++ " ]" -prettyBlock block = show block + "Table " <> text (show caption) <> " " <> text (show aligns) <> " " <> + text (show widths) $$ + prettyRow header $$ + prettyList (map prettyRow rows) + where prettyRow cols = prettyList (map (prettyList . map prettyBlock) cols) +prettyBlock block = text $ show block -- | Prettyprint Pandoc document. writeNative :: WriterOptions -> Pandoc -> String -writeNative _ (Pandoc meta blocks) = "Pandoc " ++ "(" ++ show meta ++ - ")\n" ++ (prettyBlockList 0 blocks) ++ "\n" - +writeNative opts (Pandoc meta blocks) = + let colwidth = if writerWrapText opts + then Just $ writerColumns opts + else Nothing + withHead = if writerStandalone opts + then \bs -> text ("Pandoc " ++ "(" ++ show meta ++ ")") $$ + bs $$ cr + else id + in render colwidth $ withHead $ prettyList $ map prettyBlock blocks |