aboutsummaryrefslogtreecommitdiff
path: root/src/Text/Pandoc/Writers/ODT.hs
blob: abd403cc98237829a2ee6d2302f73e3ee1909960 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
{-# LANGUAGE ScopedTypeVariables #-}
{-
Copyright (C) 2008-2015 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.ODT
   Copyright   : Copyright (C) 2008-2015 John MacFarlane
   License     : GNU GPL, version 2 or above

   Maintainer  : John MacFarlane <jgm@berkeley.edu>
   Stability   : alpha
   Portability : portable

Conversion of 'Pandoc' documents to ODT.
-}
module Text.Pandoc.Writers.ODT ( writeODTPure, writeODT ) where
import Data.List ( isPrefixOf )
import Data.Maybe ( fromMaybe )
import Text.XML.Light.Output
import Text.TeXMath
import qualified Data.ByteString.Lazy as B
import Text.Pandoc.UTF8 ( fromStringLazy )
import Codec.Archive.Zip
import Text.Pandoc.Options ( WriterOptions(..), WrapOption(..) )
import Text.Pandoc.Shared ( stringify )
import Text.Pandoc.ImageSize
import Text.Pandoc.MIME ( getMimeType, extensionFromMimeType )
import Text.Pandoc.Definition
import Text.Pandoc.Walk
import Text.Pandoc.Writers.Shared ( fixDisplayMath )
import Text.Pandoc.Writers.OpenDocument ( writeOpenDocument )
import Control.Monad.State
import Text.Pandoc.XML
import Text.Pandoc.Pretty
import qualified Control.Exception as E
import System.FilePath ( takeExtension, takeDirectory, (<.>))
import Text.Pandoc.Free ( PandocAction, runIO )
import qualified Text.Pandoc.Free as P

data ODTState = ODTState { stEntries :: [Entry]
                         }

type O = StateT ODTState PandocAction

-- | Produce an ODT file from a Pandoc document.
writeODT :: WriterOptions  -- ^ Writer options
         -> Pandoc         -- ^ Document to convert
         -> IO B.ByteString
writeODT opts doc = runIO $ writeODTPure opts doc

writeODTPure :: WriterOptions
             -> Pandoc
             -> PandocAction B.ByteString
writeODTPure opts doc =
  let initState = ODTState{ stEntries = []
                          }
  in
    evalStateT (pandocToODT opts doc) initState

-- | Produce an ODT file from a Pandoc document.
pandocToODT :: WriterOptions  -- ^ Writer options
            -> Pandoc         -- ^ Document to convert
            -> O B.ByteString
pandocToODT opts doc@(Pandoc meta _) = do
  let datadir = writerUserDataDir opts
  let title = docTitle meta
  refArchive <-
       case writerReferenceODT opts of
             Just f -> liftM toArchive $ lift $ P.readFileLazy f
             Nothing -> lift $ P.getDefaultReferenceODT datadir
  -- handle formulas and pictures
  -- picEntriesRef <- P.newIORef ([] :: [Entry])
  doc' <- walkM (transformPicMath opts) $ walk fixDisplayMath doc
  let newContents = writeOpenDocument opts{writerWrapText = WrapNone} doc'
  epochtime <- floor `fmap` (lift P.getPOSIXTime)
  let contentEntry = toEntry "content.xml" epochtime
                     $ fromStringLazy newContents
  picEntries <- gets stEntries
  let archive = foldr addEntryToArchive refArchive
                $ contentEntry : picEntries
  -- construct META-INF/manifest.xml based on archive
  let toFileEntry fp = case getMimeType fp of
                        Nothing  -> empty
                        Just m   -> selfClosingTag "manifest:file-entry"
                                     [("manifest:media-type", m)
                                     ,("manifest:full-path", fp)
                                     ,("manifest:version", "1.2")
                                     ]
  let files = [ ent | ent <- filesInArchive archive,
                             not ("META-INF" `isPrefixOf` ent) ]
  let formulas = [ takeDirectory ent ++ "/" | ent <- filesInArchive archive,
                      "Formula-" `isPrefixOf` ent, takeExtension ent == ".xml" ]
  let manifestEntry = toEntry "META-INF/manifest.xml" epochtime
        $ fromStringLazy $ render Nothing
        $ text "<?xml version=\"1.0\" encoding=\"utf-8\"?>"
        $$
         ( inTags True "manifest:manifest"
            [("xmlns:manifest","urn:oasis:names:tc:opendocument:xmlns:manifest:1.0")
            ,("manifest:version","1.2")]
            $ ( selfClosingTag "manifest:file-entry"
                 [("manifest:media-type","application/vnd.oasis.opendocument.text")
                 ,("manifest:full-path","/")]
                $$ vcat ( map toFileEntry $ files )
                $$ vcat ( map toFileEntry $ formulas )
              )
         )
  let archive' = addEntryToArchive manifestEntry archive
  let metaEntry = toEntry "meta.xml" epochtime
       $ fromStringLazy $ render Nothing
       $ text "<?xml version=\"1.0\" encoding=\"utf-8\"?>"
       $$
        ( inTags True "office:document-meta"
           [("xmlns:office","urn:oasis:names:tc:opendocument:xmlns:office:1.0")
           ,("xmlns:xlink","http://www.w3.org/1999/xlink")
           ,("xmlns:dc","http://purl.org/dc/elements/1.1/")
           ,("xmlns:meta","urn:oasis:names:tc:opendocument:xmlns:meta:1.0")
           ,("xmlns:ooo","http://openoffice.org/2004/office")
           ,("xmlns:grddl","http://www.w3.org/2003/g/data-view#")
           ,("office:version","1.2")]
           $ ( inTagsSimple "office:meta"
                $ ( inTagsSimple "dc:title" (text $ escapeStringForXML (stringify title))
                  )
             )
        )
  -- make sure mimetype is first
  let mimetypeEntry = toEntry "mimetype" epochtime
                      $ fromStringLazy "application/vnd.oasis.opendocument.text"
  let archive'' = addEntryToArchive mimetypeEntry
                  $ addEntryToArchive metaEntry archive'
  return $ fromArchive archive''

-- | transform both Image and Math elements
transformPicMath :: WriterOptions ->Inline -> O Inline
transformPicMath opts (Image attr@(id', cls, _) lab (src,t)) = do
  res <- lift $ P.fetchItem' (writerMediaBag opts) (writerSourceURL opts) src
  case res of
     Left (_ :: E.SomeException) -> do
       lift $ P.warn $ "Could not find image `" ++ src ++ "', skipping..."
       return $ Emph lab
     Right (img, mbMimeType) -> do
       (ptX, ptY) <- case imageSize img of
                       Right s  -> return $ sizeInPoints s
                       Left msg -> do
                         lift $ P.warn $ "Could not determine image size in `" ++
                           src ++ "': " ++ msg
                         return (100, 100)
       let dims =
             case (getDim Width, getDim Height) of
               (Just w, Just h)              -> [("width", show w), ("height", show h)]
               (Just w@(Percent _), Nothing) -> [("width", show w), ("style:rel-height", "scale")]
               (Nothing, Just h@(Percent _)) -> [("style:rel-width", "scale"), ("height", show h)]
               (Just w@(Inch i), Nothing)    -> [("width", show w), ("height", show (i / ratio) ++ "in")]
               (Nothing, Just h@(Inch i))    -> [("width", show (i * ratio) ++ "in"), ("height", show h)]
               _                             -> [("width", show ptX ++ "pt"), ("height", show ptY ++ "pt")]
             where
               ratio = ptX / ptY
               getDim dir = case (dimension dir attr) of
                              Just (Percent i) -> Just $ Percent i
                              Just dim         -> Just $ Inch $ inInch opts dim
                              Nothing          -> Nothing
       let  newattr = (id', cls, dims)
       entries <- gets stEntries
       let extension = fromMaybe (takeExtension $ takeWhile (/='?') src)
                           (mbMimeType >>= extensionFromMimeType)
       let newsrc = "Pictures/" ++ show (length entries) <.> extension
       let toLazy = B.fromChunks . (:[])
       epochtime <- floor `fmap` (lift P.getPOSIXTime)
       let entry = toEntry newsrc epochtime $ toLazy img
       modify $ \st -> st{ stEntries = entry : entries }
       return $ Image newattr lab (newsrc, t)
transformPicMath _ (Math t math) = do
  entries <- gets stEntries
  let dt = if t == InlineMath then DisplayInline else DisplayBlock
  case writeMathML dt <$> readTeX math of
       Left  _ -> return $ Math t math
       Right r -> do
         let conf = useShortEmptyTags (const False) defaultConfigPP
         let mathml = ppcTopElement conf r
         epochtime <- floor `fmap` (lift $ P.getPOSIXTime)
         let dirname = "Formula-" ++ show (length entries) ++ "/"
         let fname = dirname ++ "content.xml"
         let entry = toEntry fname epochtime (fromStringLazy mathml)
         modify $ \st -> st{ stEntries = entry : entries }
         return $ RawInline (Format "opendocument") $ render Nothing $
           inTags False "draw:frame" [("text:anchor-type",
                                       if t == DisplayMath
                                          then "paragraph"
                                          else "as-char")
                                     ,("style:vertical-pos", "middle")
                                     ,("style:vertical-rel", "text")] $
             selfClosingTag "draw:object" [("xlink:href", dirname)
                                        , ("xlink:type", "simple")
                                        , ("xlink:show", "embed")
                                        , ("xlink:actuate", "onLoad")]

transformPicMath _ x = return x