aboutsummaryrefslogtreecommitdiff
path: root/src/Text/Pandoc/Writers/OpenDocument.hs
blob: 42c1517806f63bb4117f97628b5dcf141343878f (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
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
{-# LANGUAGE PatternGuards, OverloadedStrings, FlexibleContexts #-}
{-
Copyright (C) 2008-2015 Andrea Rossato <andrea.rossato@ing.unitn.it>
                        and John MacFarlane.

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.OpenDocument
   Copyright   : Copyright (C) 2008-2015 Andrea Rossato and John MacFarlane
   License     : GNU GPL, version 2 or above

   Maintainer  : Andrea Rossato <andrea.rossato@ing.unitn.it>
   Stability   : alpha
   Portability : portable

Conversion of 'Pandoc' documents to OpenDocument XML.
-}
module Text.Pandoc.Writers.OpenDocument ( writeOpenDocument ) where
import Text.Pandoc.Definition
import Text.Pandoc.Options
import Text.Pandoc.XML
import Text.Pandoc.Shared (linesToPara)
import Text.Pandoc.Templates (renderTemplate')
import Text.Pandoc.Readers.TeXMath
import Text.Pandoc.Pretty
import Text.Printf ( printf )
import Control.Arrow ( (***), (>>>) )
import Control.Monad.State hiding ( when )
import Data.Char (chr)
import qualified Data.Map as Map
import Text.Pandoc.Writers.Shared

-- | Auxiliary function to convert Plain block to Para.
plainToPara :: Block -> Block
plainToPara (Plain x) = Para x
plainToPara x = x

--
-- OpenDocument writer
--

data WriterState =
    WriterState { stNotes         :: [Doc]
                , stTableStyles   :: [Doc]
                , stParaStyles    :: [Doc]
                , stListStyles    :: [(Int, [Doc])]
                , stTextStyles    :: [Doc]
                , stTextStyleAttr :: Map.Map TextStyle [(String,String)]
                , stIndentPara    :: Int
                , stInDefinition  :: Bool
                , stTight         :: Bool
                , stFirstPara     :: Bool
                , stImageId       :: Int
                }

defaultWriterState :: WriterState
defaultWriterState =
    WriterState { stNotes         = []
                , stTableStyles   = []
                , stParaStyles    = []
                , stListStyles    = []
                , stTextStyles    = []
                , stTextStyleAttr = Map.empty
                , stIndentPara    = 0
                , stInDefinition  = False
                , stTight         = False
                , stFirstPara     = False
                , stImageId       = 1
                }

when :: Bool -> Doc -> Doc
when p a = if p then a else empty

addTableStyle :: Doc -> State WriterState ()
addTableStyle i = modify $ \s -> s { stTableStyles = i : stTableStyles s }

addNote :: Doc -> State WriterState ()
addNote i = modify $ \s -> s { stNotes = i : stNotes s }

addParaStyle :: Doc -> State WriterState ()
addParaStyle i = modify $ \s -> s { stParaStyles = i : stParaStyles s }

addTextStyle :: Doc -> State WriterState ()
addTextStyle i = modify $ \s -> s { stTextStyles = i : stTextStyles s }

addTextStyleAttr :: (TextStyle, [(String,String)]) -> State WriterState ()
addTextStyleAttr (ts, xs) = modify $ \s -> s { stTextStyleAttr = Map.insert ts xs (stTextStyleAttr s) }

rmTextStyleAttr :: TextStyle -> State WriterState ()
rmTextStyleAttr ts = modify $ \s -> s { stTextStyleAttr = Map.delete ts (stTextStyleAttr s) }

increaseIndent :: State WriterState ()
increaseIndent = modify $ \s -> s { stIndentPara = 1 + stIndentPara s }

resetIndent :: State WriterState ()
resetIndent = modify $ \s -> s { stIndentPara = (stIndentPara s) - 1 }

inTightList :: State WriterState a -> State WriterState a
inTightList  f = modify (\s -> s { stTight = True  }) >> f >>= \r ->
                 modify (\s -> s { stTight = False }) >> return r

setInDefinitionList :: Bool -> State WriterState ()
setInDefinitionList b = modify $  \s -> s { stInDefinition = b }

setFirstPara :: State WriterState ()
setFirstPara =  modify $  \s -> s { stFirstPara = True }

inParagraphTags :: Doc -> State WriterState Doc
inParagraphTags d | isEmpty d = return empty
inParagraphTags d = do
  b <- gets stFirstPara
  a <- if b
       then do modify $ \st -> st { stFirstPara = False }
               return $ [("text:style-name", "First_20_paragraph")]
       else    return   [("text:style-name", "Text_20_body")]
  return $ inTags False "text:p" a d

inParagraphTagsWithStyle :: String -> Doc -> Doc
inParagraphTagsWithStyle sty = inTags False "text:p" [("text:style-name", sty)]

inSpanTags :: String -> Doc -> Doc
inSpanTags s = inTags False "text:span" [("text:style-name",s)]

withTextStyle :: TextStyle -> State WriterState a -> State WriterState a
withTextStyle s f = addTextStyleAttr (s,textStyleAttr s) >>
                    f >>= \r -> rmTextStyleAttr s >> return r

inTextStyle :: Doc -> State WriterState Doc
inTextStyle d = do
  at <- gets stTextStyleAttr
  if Map.null at
     then return d
     else do
       tn <- (+) 1 . length  <$> gets stTextStyles
       addTextStyle $ inTags False "style:style" [("style:name"  , "T" ++ show tn)
                                                 ,("style:family", "text"        )]
                    $ selfClosingTag "style:text-properties" (concatMap snd $ Map.toList at)
       return $ inTags False "text:span" [("text:style-name","T" ++ show tn)] d

inHeaderTags :: Int -> Doc -> State WriterState Doc
inHeaderTags i d =
  return $ inTags False "text:h" [ ("text:style-name", "Heading_20_" ++ show i)
                                 , ("text:outline-level", show i)] d

inQuotes :: QuoteType -> Doc -> Doc
inQuotes SingleQuote s = char '\8216' <> s <> char '\8217'
inQuotes DoubleQuote s = char '\8220' <> s <> char '\8221'

handleSpaces :: String -> Doc
handleSpaces s
    | ( ' ':_) <- s = genTag s
    | ('\t':x) <- s = selfClosingTag "text:tab" [] <> rm x
    | otherwise     = rm s
    where
        genTag       = span (==' ') >>> tag . length *** rm >>> uncurry (<>)
        tag n        = when (n /= 0) $ selfClosingTag "text:s" [("text:c", show n)]
        rm ( ' ':xs) = char ' ' <> genTag xs
        rm ('\t':xs) = selfClosingTag "text:tab" [] <> genTag xs
        rm (   x:xs) = char  x  <> rm xs
        rm        [] = empty

-- | Convert Pandoc document to string in OpenDocument format.
writeOpenDocument :: WriterOptions -> Pandoc -> String
writeOpenDocument opts (Pandoc meta blocks) =
  let colwidth = if writerWrapText opts == WrapAuto
                    then Just $ writerColumns opts
                    else Nothing
      render' = render colwidth
      ((body, metadata),s) = flip runState
        defaultWriterState $ do
           m <- metaToJSON opts
                  (fmap (render colwidth) . blocksToOpenDocument opts)
                  (fmap (render colwidth) . inlinesToOpenDocument opts)
                  meta
           b <- render' `fmap` blocksToOpenDocument opts blocks
           return (b, m)
      styles   = stTableStyles s ++ stParaStyles s ++ stTextStyles s
      listStyle (n,l) = inTags True "text:list-style"
                          [("style:name", "L" ++ show n)] (vcat l)
      listStyles  = map listStyle (stListStyles s)
      automaticStyles = vcat $ reverse $ styles ++ listStyles
      context = defField "body" body
              $ defField "automatic-styles" (render' automaticStyles)
              $ metadata
  in  if writerStandalone opts
         then renderTemplate' (writerTemplate opts) context
         else body

withParagraphStyle :: WriterOptions -> String -> [Block] -> State WriterState Doc
withParagraphStyle  o s (b:bs)
    | Para l <- b = go =<< inParagraphTagsWithStyle s <$> inlinesToOpenDocument o l
    | otherwise   = go =<< blockToOpenDocument o b
    where go i = (<>) i <$>  withParagraphStyle o s bs
withParagraphStyle _ _ [] = return empty

inPreformattedTags :: String -> State WriterState Doc
inPreformattedTags s = do
  n <- paraStyle "Preformatted_20_Text" []
  return . inParagraphTagsWithStyle ("P" ++ show n) . handleSpaces $ s

orderedListToOpenDocument :: WriterOptions -> Int -> [[Block]] -> State WriterState Doc
orderedListToOpenDocument o pn bs =
    vcat . map (inTagsIndented "text:list-item") <$>
    mapM (orderedItemToOpenDocument o pn . map plainToPara) bs

orderedItemToOpenDocument :: WriterOptions -> Int -> [Block] -> State WriterState Doc
orderedItemToOpenDocument  o n (b:bs)
    | OrderedList a l <- b = newLevel a l
    | Para          l <- b = go =<< inParagraphTagsWithStyle ("P" ++ show n) <$> inlinesToOpenDocument o l
    | otherwise            = go =<< blockToOpenDocument o b
    where
      go i = ($$) i <$> orderedItemToOpenDocument o n bs
      newLevel a l = do
        nn <- length <$> gets stParaStyles
        ls <- head   <$> gets stListStyles
        modify $ \s -> s { stListStyles = orderedListLevelStyle a ls : tail (stListStyles s) }
        inTagsIndented "text:list" <$> orderedListToOpenDocument o nn l
orderedItemToOpenDocument  _ _ [] = return empty

isTightList :: [[Block]] -> Bool
isTightList []          = False
isTightList (b:_)
    | Plain {} : _ <- b = True
    | otherwise         = False

newOrderedListStyle :: Bool -> ListAttributes -> State WriterState (Int,Int)
newOrderedListStyle b a = do
  ln <- (+) 1 . length  <$> gets stListStyles
  let nbs = orderedListLevelStyle a (ln, [])
  pn <- if b then inTightList (paraListStyle ln) else paraListStyle ln
  modify $ \s -> s { stListStyles = nbs : stListStyles s }
  return (ln,pn)

bulletListToOpenDocument :: WriterOptions -> [[Block]] -> State WriterState Doc
bulletListToOpenDocument o b = do
  ln <- (+) 1 . length <$> gets stListStyles
  (pn,ns) <- if isTightList b then inTightList (bulletListStyle ln) else bulletListStyle ln
  modify $ \s -> s { stListStyles = ns : stListStyles s }
  is <- listItemsToOpenDocument ("P" ++ show pn) o b
  return $ inTags True "text:list" [("text:style-name", "L" ++ show ln)] is

listItemsToOpenDocument :: String -> WriterOptions -> [[Block]] -> State WriterState Doc
listItemsToOpenDocument s o is =
    vcat . map (inTagsIndented "text:list-item") <$> mapM (withParagraphStyle o s . map plainToPara) is

deflistItemToOpenDocument :: WriterOptions -> ([Inline],[[Block]]) -> State WriterState Doc
deflistItemToOpenDocument o (t,d) = do
  let ts = if isTightList d
           then "Definition_20_Term_20_Tight"       else "Definition_20_Term"
      ds = if isTightList d
           then "Definition_20_Definition_20_Tight" else "Definition_20_Definition"
  t' <- withParagraphStyle o ts [Para t]
  d' <- liftM vcat $ mapM (withParagraphStyle o ds . (map plainToPara)) d
  return $ t' $$ d'

inBlockQuote :: WriterOptions -> Int -> [Block] -> State WriterState Doc
inBlockQuote  o i (b:bs)
    | BlockQuote l <- b = do increaseIndent
                             ni <- paraStyle "Quotations" []
                             go =<< inBlockQuote o ni (map plainToPara l)
    | Para       l <- b = do go =<< inParagraphTagsWithStyle ("P" ++ show  i) <$> inlinesToOpenDocument o l
    | otherwise         = do go =<< blockToOpenDocument o b
    where go  block  = ($$) block <$> inBlockQuote o i bs
inBlockQuote     _ _ [] =  resetIndent >> return empty

-- | Convert a list of Pandoc blocks to OpenDocument.
blocksToOpenDocument :: WriterOptions -> [Block] -> State WriterState Doc
blocksToOpenDocument o b = vcat <$> mapM (blockToOpenDocument o) b

-- | Convert a Pandoc block element to OpenDocument.
blockToOpenDocument :: WriterOptions -> Block -> State WriterState Doc
blockToOpenDocument o bs
    | Plain          b <- bs = if null b
                                  then return empty
                                  else inParagraphTags =<< inlinesToOpenDocument o b
    | Para [Image attr c (s,'f':'i':'g':':':t)] <- bs
                             = figure attr c s t
    | Para           b <- bs = if null b
                                  then return empty
                                  else inParagraphTags =<< inlinesToOpenDocument o b
    | LineBlock      b <- bs = blockToOpenDocument o $ linesToPara b
    | Div _ xs         <- bs = blocksToOpenDocument o xs
    | Header     i _ b <- bs = setFirstPara >>
                               (inHeaderTags  i =<< inlinesToOpenDocument o b)
    | BlockQuote     b <- bs = setFirstPara >> mkBlockQuote b
    | DefinitionList b <- bs = setFirstPara >> defList b
    | BulletList     b <- bs = setFirstPara >> bulletListToOpenDocument o b
    | OrderedList  a b <- bs = setFirstPara >> orderedList a b
    | CodeBlock    _ s <- bs = setFirstPara >> preformatted s
    | Table  c a w h r <- bs = setFirstPara >> table c a w h r
    | HorizontalRule   <- bs = setFirstPara >> return (selfClosingTag "text:p"
                                [ ("text:style-name", "Horizontal_20_Line") ])
    | RawBlock f     s <- bs = if f == Format "opendocument"
                                  then return $ text s
                                  else return empty
    | Null             <- bs = return empty
    | otherwise              = return empty
    where
      defList       b = do setInDefinitionList True
                           r <- vcat  <$> mapM (deflistItemToOpenDocument o) b
                           setInDefinitionList False
                           return r
      preformatted  s = (flush . vcat) <$> mapM (inPreformattedTags . escapeStringForXML) (lines s)
      mkBlockQuote  b = do increaseIndent
                           i <- paraStyle "Quotations" []
                           inBlockQuote o i (map plainToPara b)
      orderedList a b = do (ln,pn) <- newOrderedListStyle (isTightList b) a
                           inTags True "text:list" [ ("text:style-name", "L" ++ show ln)]
                                      <$> orderedListToOpenDocument o pn b
      table c a w h r = do
        tn <- length <$> gets stTableStyles
        pn <- length <$> gets stParaStyles
        let  genIds      = map chr [65..]
             name        = "Table" ++ show (tn + 1)
             columnIds   = zip genIds w
             mkColumn  n = selfClosingTag "table:table-column" [("table:style-name", name ++ "." ++ [fst n])]
             columns     = map mkColumn columnIds
             paraHStyles = paraTableStyles "Heading"  pn a
             paraStyles  = paraTableStyles "Contents" (pn + length (newPara paraHStyles)) a
             newPara     = map snd . filter (not . isEmpty . snd)
        addTableStyle $ tableStyle tn columnIds
        mapM_ addParaStyle . newPara $ paraHStyles ++ paraStyles
        captionDoc <- if null c
                      then return empty
                      else withParagraphStyle o "TableCaption" [Para c]
        th <- if all null h
                 then return empty
                 else colHeadsToOpenDocument o name (map fst paraHStyles) h
        tr <- mapM (tableRowToOpenDocument o name (map fst paraStyles)) r
        return $ inTags True "table:table" [ ("table:name"      , name)
                                           , ("table:style-name", name)
                                           ] (vcat columns $$ th $$ vcat tr) $$ captionDoc
      figure attr caption source title | null caption =
        withParagraphStyle o "Figure" [Para [Image attr caption (source,title)]]
                                  | otherwise    = do
        imageDoc <- withParagraphStyle o "FigureWithCaption" [Para [Image attr caption (source,title)]]
        captionDoc <- withParagraphStyle o "FigureCaption" [Para caption]
        return $ imageDoc $$ captionDoc

colHeadsToOpenDocument :: WriterOptions -> String -> [String] -> [[Block]] -> State WriterState Doc
colHeadsToOpenDocument o tn ns hs =
    inTagsIndented "table:table-header-rows" . inTagsIndented "table:table-row" . vcat <$>
    mapM (tableItemToOpenDocument o tn) (zip ns hs)

tableRowToOpenDocument :: WriterOptions -> String -> [String] -> [[Block]] -> State WriterState Doc
tableRowToOpenDocument o tn ns cs =
    inTagsIndented "table:table-row" . vcat <$>
    mapM (tableItemToOpenDocument o tn) (zip ns cs)

tableItemToOpenDocument :: WriterOptions -> String -> (String,[Block])-> State WriterState Doc
tableItemToOpenDocument o tn (n,i) =
  let a = [ ("table:style-name" , tn ++ ".A1" )
          , ("office:value-type", "string"     )
          ]
  in  inTags True "table:table-cell" a <$>
      withParagraphStyle o n (map plainToPara i)

-- | Convert a list of inline elements to OpenDocument.
inlinesToOpenDocument :: WriterOptions -> [Inline] -> State WriterState Doc
inlinesToOpenDocument o l = hcat <$> mapM (inlineToOpenDocument o) l

-- | Convert an inline element to OpenDocument.
inlineToOpenDocument :: WriterOptions -> Inline -> State WriterState Doc
inlineToOpenDocument o ils
  = case ils of
    Space         -> inTextStyle space
    SoftBreak
     | writerWrapText o == WrapPreserve
                  -> inTextStyle (preformatted "\n")
     | otherwise  -> inTextStyle space
    Span _ xs     -> inlinesToOpenDocument o xs
    LineBreak     -> return $ selfClosingTag "text:line-break" []
    Str         s -> inTextStyle $ handleSpaces $ escapeStringForXML s
    Emph        l -> withTextStyle Italic $ inlinesToOpenDocument o l
    Strong      l -> withTextStyle Bold   $ inlinesToOpenDocument o l
    Strikeout   l -> withTextStyle Strike $ inlinesToOpenDocument o l
    Superscript l -> withTextStyle Sup    $ inlinesToOpenDocument o l
    Subscript   l -> withTextStyle Sub    $ inlinesToOpenDocument o l
    SmallCaps   l -> withTextStyle SmallC $ inlinesToOpenDocument o l
    Quoted    t l -> inQuotes t <$> inlinesToOpenDocument o l
    Code      _ s -> inlinedCode $ preformatted s
    Math      t s -> inlinesToOpenDocument o (texMathToInlines t s)
    Cite      _ l -> inlinesToOpenDocument o l
    RawInline f s -> if f == Format "opendocument"
                       then return $ text s
                       else return empty
    Link _ l (s,t) ->  mkLink s t <$> inlinesToOpenDocument o l
    Image attr _ (s,t) -> mkImg attr s t
    Note        l  -> mkNote l
    where
      preformatted s = handleSpaces $ escapeStringForXML s
      inlinedCode s = return $ inTags False "text:span" [("text:style-name", "Source_Text")] s
      mkLink   s t = inTags False "text:a" [ ("xlink:type" , "simple")
                                           , ("xlink:href" , s       )
                                           , ("office:name", t       )
                                           ] . inSpanTags "Definition"
      mkImg (_, _, kvs) s _ = do
               id' <- gets stImageId
               modify (\st -> st{ stImageId = id' + 1 })
               let getDims [] = []
                   getDims (("width", w) :xs) = ("svg:width", w)  : getDims xs
                   getDims (("height", h):xs) = ("svg:height", h) : getDims xs
                   getDims (x@("style:rel-width", _) :xs) = x : getDims xs
                   getDims (x@("style:rel-height", _):xs) = x : getDims xs
                   getDims (_:xs) =                             getDims xs
               return $ inTags False "draw:frame"
                        (("draw:name", "img" ++ show id') : getDims kvs) $
                     selfClosingTag "draw:image" [ ("xlink:href"   , s       )
                                                 , ("xlink:type"   , "simple")
                                                 , ("xlink:show"   , "embed" )
                                                 , ("xlink:actuate", "onLoad")]
      mkNote     l = do
        n <- length <$> gets stNotes
        let footNote t = inTags False "text:note"
                         [ ("text:id"        , "ftn" ++ show n)
                         , ("text:note-class", "footnote"     )] $
                         inTagsSimple "text:note-citation" (text . show $ n + 1) <>
                         inTagsSimple "text:note-body" t
        nn <- footNote <$> withParagraphStyle o "Footnote" l
        addNote nn
        return nn

bulletListStyle :: Int -> State WriterState (Int,(Int,[Doc]))
bulletListStyle l =
    let doStyles  i = inTags True "text:list-level-style-bullet"
                      [ ("text:level"      , show (i + 1)       )
                      , ("text:style-name" , "Bullet_20_Symbols")
                      , ("style:num-suffix", "."                )
                      , ("text:bullet-char", [bulletList !! i]  )
                      ] (listLevelStyle (1 + i))
        bulletList  = map chr $ cycle [8226,8227,8259]
        listElStyle = map doStyles [0..9]
    in  do pn <- paraListStyle l
           return (pn, (l, listElStyle))

orderedListLevelStyle :: ListAttributes -> (Int, [Doc]) -> (Int,[Doc])
orderedListLevelStyle (s,n, d) (l,ls) =
    let suffix    = case d of
                      OneParen  -> [("style:num-suffix", ")")]
                      TwoParens -> [("style:num-prefix", "(")
                                   ,("style:num-suffix", ")")]
                      _         -> [("style:num-suffix", ".")]
        format    = case n of
                      UpperAlpha   -> "A"
                      LowerAlpha   -> "a"
                      UpperRoman   -> "I"
                      LowerRoman   -> "i"
                      _            -> "1"
        listStyle = inTags True "text:list-level-style-number"
                    ([ ("text:level"      , show $ 1 + length ls  )
                     , ("text:style-name" , "Numbering_20_Symbols")
                     , ("style:num-format", format                )
                     , ("text:start-value", show s                )
                     ] ++ suffix) (listLevelStyle (1 + length ls))
    in  (l, ls ++ [listStyle])

listLevelStyle :: Int -> Doc
listLevelStyle i =
    let indent = show (0.25 * fromIntegral i :: Double) in
    selfClosingTag "style:list-level-properties"
                       [ ("text:space-before"   , indent ++ "in")
                       , ("text:min-label-width",       "0.25in")]

tableStyle :: Int -> [(Char,Double)] -> Doc
tableStyle num wcs =
    let tableId        = "Table" ++ show (num + 1)
        table          = inTags True "style:style"
                         [("style:name", tableId)
                         ,("style:family", "table")] $
                         selfClosingTag "style:table-properties"
                         [("table:align"    , "center")]
        colStyle (c,0) = selfClosingTag "style:style"
                         [ ("style:name"  , tableId ++ "." ++ [c])
                         , ("style:family", "table-column"       )]
        colStyle (c,w) = inTags True "style:style"
                         [ ("style:name"  , tableId ++ "." ++ [c])
                         , ("style:family", "table-column"       )] $
                         selfClosingTag "style:table-column-properties"
                         [("style:rel-column-width", printf "%d*" $ (floor $ w * 65535 :: Integer))]
        cellStyle      = inTags True "style:style"
                         [ ("style:name"  , tableId ++ ".A1")
                         , ("style:family", "table-cell"    )] $
                         selfClosingTag "style:table-cell-properties"
                         [ ("fo:border", "none")]
        columnStyles   = map colStyle wcs
    in  table $$ vcat columnStyles $$ cellStyle

paraStyle :: String -> [(String,String)] -> State WriterState Int
paraStyle parent attrs = do
  pn <- (+)   1 . length       <$> gets stParaStyles
  i  <- (*) 0.5 . fromIntegral <$> gets stIndentPara :: State WriterState Double
  b  <- gets stInDefinition
  t  <- gets stTight
  let styleAttr = [ ("style:name"             , "P" ++ show pn)
                  , ("style:family"           , "paragraph"   )
                  , ("style:parent-style-name", parent        )]
      indentVal = flip (++) "in" . show $ if b then (max 0.5 i) else i
      tight     = if t then [ ("fo:margin-top"          , "0in"    )
                            , ("fo:margin-bottom"       , "0in"    )]
                       else []
      indent    = if (i /= 0 || b)
                      then [ ("fo:margin-left"         , indentVal)
                           , ("fo:margin-right"        , "0in"    )
                           , ("fo:text-indent"         , "0in"    )
                           , ("style:auto-text-indent" , "false"  )]
                      else []
      attributes = indent ++ tight
      paraProps = when (not $ null attributes) $
                    selfClosingTag "style:paragraph-properties" attributes
  addParaStyle $ inTags True "style:style" (styleAttr ++ attrs) paraProps
  return pn

paraListStyle :: Int -> State WriterState Int
paraListStyle l = paraStyle "Text_20_body" [("style:list-style-name", "L" ++ show l )]

paraTableStyles :: String -> Int -> [Alignment] -> [(String, Doc)]
paraTableStyles _ _ [] = []
paraTableStyles t s (a:xs)
    | AlignRight  <- a = (         pName s, res s "end"   ) : paraTableStyles t (s + 1) xs
    | AlignCenter <- a = (         pName s, res s "center") : paraTableStyles t (s + 1) xs
    | otherwise        = ("Table_20_" ++ t, empty         ) : paraTableStyles t  s      xs
    where pName sn = "P" ++ show (sn + 1)
          res sn x = inTags True "style:style"
                     [ ("style:name"             , pName sn        )
                     , ("style:family"           , "paragraph"     )
                     , ("style:parent-style-name", "Table_20_" ++ t)] $
                     selfClosingTag "style:paragraph-properties"
                     [ ("fo:text-align", x)
                     , ("style:justify-single-word", "false")]

data TextStyle = Italic | Bold | Strike | Sub | Sup | SmallC | Pre
               deriving ( Eq,Ord )

textStyleAttr :: TextStyle -> [(String,String)]
textStyleAttr s
    | Italic <- s = [("fo:font-style"                ,"italic"    )
                    ,("style:font-style-asian"       ,"italic"    )
                    ,("style:font-style-complex"     ,"italic"    )]
    | Bold   <- s = [("fo:font-weight"               ,"bold"      )
                    ,("style:font-weight-asian"      ,"bold"      )
                    ,("style:font-weight-complex"    ,"bold"      )]
    | Strike <- s = [("style:text-line-through-style", "solid"    )]
    | Sub    <- s = [("style:text-position"          ,"sub 58%"   )]
    | Sup    <- s = [("style:text-position"          ,"super 58%" )]
    | SmallC <- s = [("fo:font-variant"              ,"small-caps")]
    | Pre    <- s = [("style:font-name"              ,"Courier New")
                    ,("style:font-name-asian"        ,"Courier New")
                    ,("style:font-name-complex"      ,"Courier New")]
    | otherwise   = []