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Diffstat (limited to 'src/Text/Pandoc')
| -rw-r--r-- | src/Text/Pandoc/Writers/DokuWiki.hs | 435 |
1 files changed, 435 insertions, 0 deletions
diff --git a/src/Text/Pandoc/Writers/DokuWiki.hs b/src/Text/Pandoc/Writers/DokuWiki.hs new file mode 100644 index 000000000..ea56ac393 --- /dev/null +++ b/src/Text/Pandoc/Writers/DokuWiki.hs @@ -0,0 +1,435 @@ +{- +Copyright (C) 2008-2014 John MacFarlane <jgm@berkeley.edu> + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +-} + +{- | + Module : Text.Pandoc.Writers.DokuWiki + Copyright : Copyright (C) 2008-2014 John MacFarlane + License : GNU GPL, version 2 or above + + Maintainer : John MacFarlane <jgm@berkeley.edu> + Stability : alpha + Portability : portable + +Conversion of 'Pandoc' documents to DokuWiki markup. + +DokuWiki: <https://www.dokuwiki.org/dokuwiki> +-} + +{- + [ ] Implement nested blockquotes (currently only ever does one level) + [ ] Implement alignment of text in tables + [ ] Implement comments + [ ] Work through the Dokuwiki spec, and check I've not missed anything out + [ ] Remove dud/duplicate code +-} + +module Text.Pandoc.Writers.DokuWiki ( writeDokuWiki ) where +import Text.Pandoc.Definition +import Text.Pandoc.Options +import Text.Pandoc.Shared +import Text.Pandoc.Writers.Shared +import Text.Pandoc.Templates (renderTemplate') +import Data.List ( intersect, intercalate ) +import Network.URI ( isURI ) +import Control.Monad.State + +data WriterState = WriterState { + stNotes :: Bool -- True if there are notes + , stIndent :: String -- Indent after the marker at the beginning of list items + , stUseTags :: Bool -- True if we should use HTML tags because we're in a complex list + } + +-- | Convert Pandoc to DokuWiki. +writeDokuWiki :: WriterOptions -> Pandoc -> String +writeDokuWiki opts document = + evalState (pandocToDokuWiki opts document) + (WriterState { stNotes = False, stIndent = "", stUseTags = False }) + +-- | Return DokuWiki representation of document. +pandocToDokuWiki :: WriterOptions -> Pandoc -> State WriterState String +pandocToDokuWiki opts (Pandoc meta blocks) = do + metadata <- metaToJSON opts + (fmap trimr . blockListToDokuWiki opts) + (inlineListToDokuWiki opts) + meta + body <- blockListToDokuWiki opts blocks + notesExist <- get >>= return . stNotes + let notes = if notesExist + then "" -- TODO Was "\n<references />" Check whether I can really remove this: + -- if it is definitely to do with footnotes, can remove this whole bit + else "" + let main = body ++ notes + let context = defField "body" main + $ defField "toc" (writerTableOfContents opts) + $ metadata + if writerStandalone opts + then return $ renderTemplate' (writerTemplate opts) context + else return main + +-- | Escape special characters for MediaWiki. +escapeString :: String -> String +escapeString str = substitute "__" "%%__%%" ( substitute "**" "%%**%%" ( substitute "//" "%%//%%" str ) ) + +-- | Convert Pandoc block element to DokuWiki. +blockToDokuWiki :: WriterOptions -- ^ Options + -> Block -- ^ Block element + -> State WriterState String + +blockToDokuWiki _ Null = return "" + +blockToDokuWiki opts (Div _attrs bs) = do + contents <- blockListToDokuWiki opts bs + return $ contents ++ "\n" + +blockToDokuWiki opts (Plain inlines) = + inlineListToDokuWiki opts inlines + +-- title beginning with fig: indicates that the image is a figure +-- dokuwiki doesn't support captions - so combine together alt and caption into alt +blockToDokuWiki opts (Para [Image txt (src,'f':'i':'g':':':tit)]) = do + capt <- if null txt + then return "" + else (" " ++) `fmap` inlineListToDokuWiki opts txt + let opt = if null txt + then "" + else "|" ++ if null tit then capt else tit ++ capt + return $ "{{:" ++ src ++ opt ++ "}}\n" + +blockToDokuWiki opts (Para inlines) = do + useTags <- get >>= return . stUseTags + indent <- get >>= return . stIndent + contents <- inlineListToDokuWiki opts inlines + return $ if useTags + then "<p>" ++ contents ++ "</p>" + else contents ++ if null indent then "\n" else "" + +blockToDokuWiki _ (RawBlock f str) + | f == Format "mediawiki" = return str + | f == Format "html" = return $ "<html>\n" ++ str ++ "</html>" + | otherwise = return str + +blockToDokuWiki _ HorizontalRule = return "\n----\n" + +blockToDokuWiki opts (Header level _ inlines) = do + contents <- inlineListToDokuWiki opts inlines + let eqs = replicate ( 7 - level ) '=' + return $ eqs ++ " " ++ contents ++ " " ++ eqs ++ "\n" + +blockToDokuWiki _ (CodeBlock (_,classes,_) str) = do + let at = classes `intersect` ["actionscript", "ada", "apache", "applescript", "asm", "asp", + "autoit", "bash", "blitzbasic", "bnf", "c", "c_mac", "caddcl", "cadlisp", "cfdg", "cfm", + "cpp", "cpp-qt", "csharp", "css", "d", "delphi", "diff", "div", "dos", "eiffel", "fortran", + "freebasic", "gml", "groovy", "html4strict", "idl", "ini", "inno", "io", "java", "java5", + "javascript", "latex", "lisp", "lua", "matlab", "mirc", "mpasm", "mysql", "nsis", "objc", + "ocaml", "ocaml-brief", "oobas", "oracle8", "pascal", "perl", "php", "php-brief", "plsql", + "python", "qbasic", "rails", "reg", "robots", "ruby", "sas", "scheme", "sdlbasic", + "smalltalk", "smarty", "sql", "tcl", "", "thinbasic", "tsql", "vb", "vbnet", "vhdl", + "visualfoxpro", "winbatch", "xml", "xpp", "z80"] + let (beg, end) = if null at + then ("<code" ++ if null classes then ">" else " class=\"" ++ unwords classes ++ "\">", "</code>") + else ("<source lang=\"" ++ head at ++ "\">", "</source>") + return $ beg ++ str ++ end + +blockToDokuWiki opts (BlockQuote blocks) = do + contents <- blockListToDokuWiki opts blocks + return $ "> " ++ contents + +blockToDokuWiki opts (Table capt aligns _ headers rows') = do + let alignStrings = map alignmentToString aligns + captionDoc <- if null capt + then return "" + else do + c <- inlineListToDokuWiki opts capt + return $ "" ++ c ++ "\n" + head' <- if all null headers + then return "" + else do + hs <- tableHeaderToDokuWiki opts alignStrings 0 headers + return $ hs ++ "\n" + body' <- zipWithM (tableRowToDokuWiki opts alignStrings) [1..] rows' + return $ captionDoc ++ head' ++ + unlines body' + +blockToDokuWiki opts x@(BulletList items) = do + oldUseTags <- get >>= return . stUseTags + indent <- get >>= return . stIndent + let useTags = oldUseTags || not (isSimpleList x) + if useTags + then do + modify $ \s -> s { stUseTags = True } + contents <- mapM (listItemToDokuWiki opts) items + modify $ \s -> s { stUseTags = oldUseTags } + return $ "<ul>\n" ++ vcat contents ++ "</ul>\n" + else do + modify $ \s -> s { stIndent = stIndent s ++ " " } + contents <- mapM (listItemToDokuWiki opts) items + modify $ \s -> s { stIndent = indent } + return $ vcat contents ++ if null indent then "\n" else "" + +blockToDokuWiki opts x@(OrderedList attribs items) = do + oldUseTags <- get >>= return . stUseTags + indent <- get >>= return . stIndent + let useTags = oldUseTags || not (isSimpleList x) + if useTags + then do + modify $ \s -> s { stUseTags = True } + contents <- mapM (orderedListItemToDokuWiki opts) items + modify $ \s -> s { stUseTags = oldUseTags } + return $ "<ol" ++ listAttribsToString attribs ++ ">\n" ++ vcat contents ++ "</ol>\n" + else do + modify $ \s -> s { stIndent = stIndent s ++ " " } + contents <- mapM (orderedListItemToDokuWiki opts) items + modify $ \s -> s { stIndent = indent } + return $ vcat contents ++ if null indent then "\n" else "" + +-- TODO Need to decide how to make definition lists work on dokuwiki - I don't think there +-- is a specific representation of them. +-- TODO This creates double '; ; ' if there is a bullet or ordered list inside a definition list +blockToDokuWiki opts x@(DefinitionList items) = do + oldUseTags <- get >>= return . stUseTags + indent <- get >>= return . stIndent + let useTags = oldUseTags || not (isSimpleList x) + if useTags + then do + modify $ \s -> s { stUseTags = True } + contents <- mapM (definitionListItemToDokuWiki opts) items + modify $ \s -> s { stUseTags = oldUseTags } + return $ "<dl>\n" ++ vcat contents ++ "</dl>\n" + else do + modify $ \s -> s { stIndent = stIndent s ++ " " } + contents <- mapM (definitionListItemToDokuWiki opts) items + modify $ \s -> s { stIndent = indent } + return $ vcat contents ++ if null indent then "\n" else "" + +-- Auxiliary functions for lists: + +-- | Convert ordered list attributes to HTML attribute string +listAttribsToString :: ListAttributes -> String +listAttribsToString (startnum, numstyle, _) = + let numstyle' = camelCaseToHyphenated $ show numstyle + in (if startnum /= 1 + then " start=\"" ++ show startnum ++ "\"" + else "") ++ + (if numstyle /= DefaultStyle + then " style=\"list-style-type: " ++ numstyle' ++ ";\"" + else "") + +-- | Convert bullet list item (list of blocks) to DokuWiki. +listItemToDokuWiki :: WriterOptions -> [Block] -> State WriterState String +listItemToDokuWiki opts items = do + contents <- blockListToDokuWiki opts items + useTags <- get >>= return . stUseTags + if useTags + then return $ "<li>" ++ contents ++ "</li>" + else do + indent <- get >>= return . stIndent + return $ indent ++ "* " ++ contents + +-- | Convert ordered list item (list of blocks) to DokuWiki. +-- | TODO Emiminate dreadful duplication of text from listItemToDokuWiki +orderedListItemToDokuWiki :: WriterOptions -> [Block] -> State WriterState String +orderedListItemToDokuWiki opts items = do + contents <- blockListToDokuWiki opts items + useTags <- get >>= return . stUseTags + if useTags + then return $ "<li>" ++ contents ++ "</li>" + else do + indent <- get >>= return . stIndent + return $ indent ++ "- " ++ contents + +-- | Convert definition list item (label, list of blocks) to DokuWiki. +definitionListItemToDokuWiki :: WriterOptions + -> ([Inline],[[Block]]) + -> State WriterState String +definitionListItemToDokuWiki opts (label, items) = do + labelText <- inlineListToDokuWiki opts label + contents <- mapM (blockListToDokuWiki opts) items + useTags <- get >>= return . stUseTags + if useTags + then return $ "<dt>" ++ labelText ++ "</dt>\n" ++ + (intercalate "\n" $ map (\d -> "<dd>" ++ d ++ "</dd>") contents) + else do + indent <- get >>= return . stIndent + return $ indent ++ "* **" ++ labelText ++ "** " ++ concat contents + +-- | True if the list can be handled by simple wiki markup, False if HTML tags will be needed. +isSimpleList :: Block -> Bool +isSimpleList x = + case x of + BulletList _ -> True + OrderedList _ _ -> True + DefinitionList _ -> True + _ -> False + +-- | Concatenates strings with line breaks between them. +vcat :: [String] -> String +vcat = intercalate "\n" + +-- Auxiliary functions for tables: + +-- TODO Eliminate copy-and-pasted code in tableHeaderToDokuWiki and tableRowToDokuWiki +tableHeaderToDokuWiki :: WriterOptions + -> [String] + -> Int + -> [[Block]] + -> State WriterState String +tableHeaderToDokuWiki opts alignStrings rownum cols' = do + let celltype = if rownum == 0 then "" else "" + cols'' <- sequence $ zipWith + (\alignment item -> tableItemToDokuWiki opts celltype alignment item) + alignStrings cols' + return $ "^ " ++ "" ++ joinHeaders cols'' ++ " ^" + +tableRowToDokuWiki :: WriterOptions + -> [String] + -> Int + -> [[Block]] + -> State WriterState String +tableRowToDokuWiki opts alignStrings rownum cols' = do + let celltype = if rownum == 0 then "" else "" + cols'' <- sequence $ zipWith + (\alignment item -> tableItemToDokuWiki opts celltype alignment item) + alignStrings cols' + return $ "| " ++ "" ++ joinColumns cols'' ++ " |" + +alignmentToString :: Alignment -> [Char] +alignmentToString alignment = case alignment of + AlignLeft -> "" + AlignRight -> "" + AlignCenter -> "" + AlignDefault -> "" + +tableItemToDokuWiki :: WriterOptions + -> String + -> String + -> [Block] + -> State WriterState String +-- TODO Fix celltype and align' defined but not used +tableItemToDokuWiki opts _celltype _align' item = do + let mkcell x = "" ++ x ++ "" + contents <- blockListToDokuWiki opts item + return $ mkcell contents + +-- | Concatenates columns together. +joinColumns :: [String] -> String +joinColumns = intercalate " | " + +-- | Concatenates headers together. +joinHeaders :: [String] -> String +joinHeaders = intercalate " ^ " + +-- | Convert list of Pandoc block elements to DokuWiki. +blockListToDokuWiki :: WriterOptions -- ^ Options + -> [Block] -- ^ List of block elements + -> State WriterState String +blockListToDokuWiki opts blocks = + mapM (blockToDokuWiki opts) blocks >>= return . vcat + +-- | Convert list of Pandoc inline elements to DokuWiki. +inlineListToDokuWiki :: WriterOptions -> [Inline] -> State WriterState String +inlineListToDokuWiki opts lst = mapM (inlineToDokuWiki opts) lst >>= return . concat + +-- | Convert Pandoc inline element to DokuWiki. +inlineToDokuWiki :: WriterOptions -> Inline -> State WriterState String + +inlineToDokuWiki opts (Span _attrs ils) = do + contents <- inlineListToDokuWiki opts ils + return contents + +inlineToDokuWiki opts (Emph lst) = do + contents <- inlineListToDokuWiki opts lst + return $ "//" ++ contents ++ "//" + +inlineToDokuWiki opts (Strong lst) = do + contents <- inlineListToDokuWiki opts lst + return $ "**" ++ contents ++ "**" + +inlineToDokuWiki opts (Strikeout lst) = do + contents <- inlineListToDokuWiki opts lst + return $ "<del>" ++ contents ++ "</del>" + +inlineToDokuWiki opts (Superscript lst) = do + contents <- inlineListToDokuWiki opts lst + return $ "<sup>" ++ contents ++ "</sup>" + +inlineToDokuWiki opts (Subscript lst) = do + contents <- inlineListToDokuWiki opts lst + return $ "<sub>" ++ contents ++ "</sub>" + +inlineToDokuWiki opts (SmallCaps lst) = inlineListToDokuWiki opts lst + +inlineToDokuWiki opts (Quoted SingleQuote lst) = do + contents <- inlineListToDokuWiki opts lst + return $ "\8216" ++ contents ++ "\8217" + +inlineToDokuWiki opts (Quoted DoubleQuote lst) = do + contents <- inlineListToDokuWiki opts lst + return $ "\8220" ++ contents ++ "\8221" + +inlineToDokuWiki opts (Cite _ lst) = inlineListToDokuWiki opts lst + +inlineToDokuWiki _ (Code _ str) = + -- In dokuwiki, text surrounded by '' is really just a font statement, i.e. <tt>, + -- and so other formatting can be present inside. + -- However, in pandoc, and markdown, inlined code doesn't contain formatting. + -- So I have opted for using %% to disable all formatting inside inline code blocks. + -- This gives the best results when converting from other formats to dokuwiki, even if + -- the resultand code is a little ugly, for short strings that don't contain formatting + -- characters. + -- It does mean that if pandoc could ever read dokuwiki, and so round-trip the format, + -- any formatting inside inlined code blocks would be lost, or presented incorrectly. + return $ "''%%" ++ str ++ "%%''" + +inlineToDokuWiki _ (Str str) = return $ escapeString str + +inlineToDokuWiki _ (Math _ str) = return $ "<math>" ++ str ++ "</math>" + -- note: str should NOT be escaped + +inlineToDokuWiki _ (RawInline f str) + | f == Format "mediawiki" = return str + | f == Format "html" = return str + | otherwise = return str + +inlineToDokuWiki _ (LineBreak) = return "\\\\ " + +inlineToDokuWiki _ Space = return " " + +inlineToDokuWiki opts (Link txt (src, _)) = do + label <- inlineListToDokuWiki opts txt + case txt of + [Str s] | escapeURI s == src -> return src + _ -> if isURI src + then return $ "[[" ++ src ++ "|" ++ label ++ "]]" + else return $ "[[" ++ src' ++ "|" ++ label ++ "]]" + where src' = case src of + '/':xs -> xs -- with leading / it's a + _ -> src -- link to a help page +inlineToDokuWiki opts (Image alt (source, tit)) = do + alt' <- inlineListToDokuWiki opts alt + let txt = if (null tit) + then if null alt + then "" + else "|" ++ alt' + else "|" ++ tit + return $ "{{:" ++ source ++ txt ++ "}}" + +inlineToDokuWiki opts (Note contents) = do + contents' <- blockListToDokuWiki opts contents + modify (\s -> s { stNotes = True }) + return $ "((" ++ contents' ++ "))" + -- note - may not work for notes with multiple blocks |