summaryrefslogtreecommitdiff
path: root/src/Text/Pandoc/Writers/Docx.hs
blob: bc8568cd1643dbc480649f1dcd07daad48666f37 (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
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
{-# LANGUAGE DeriveFunctor       #-}
{-# LANGUAGE PatternGuards       #-}
{-# LANGUAGE RankNTypes          #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE ViewPatterns        #-}
{-
Copyright (C) 2012-2017 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.Docx
   Copyright   : Copyright (C) 2012-2017 John MacFarlane
   License     : GNU GPL, version 2 or above

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

Conversion of 'Pandoc' documents to docx.
-}
module Text.Pandoc.Writers.Docx ( writeDocx ) where
import Codec.Archive.Zip
import Control.Applicative ((<|>))
import Control.Monad.Except (catchError)
import Control.Monad.Reader
import Control.Monad.State.Strict
import qualified Data.ByteString as B
import qualified Data.ByteString.Lazy as BL
import qualified Data.ByteString.Lazy.Char8 as BL8
import Data.Char (isSpace, ord, toLower)
import Data.List (intercalate, isPrefixOf, isSuffixOf)
import qualified Data.Map as M
import Data.Maybe (fromMaybe, isNothing, mapMaybe, maybeToList)
import Data.Monoid ((<>))
import qualified Data.Set as Set
import qualified Data.Text as T
import Data.Time.Clock.POSIX
import Skylighting
import System.Random (randomR)
import Text.Pandoc.Class (PandocMonad, report)
import qualified Text.Pandoc.Class as P
import Text.Pandoc.Compat.Time
import Text.Pandoc.Definition
import Text.Pandoc.Generic
import Text.Pandoc.Highlighting (highlight)
import Text.Pandoc.ImageSize
import Text.Pandoc.Logging
import Text.Pandoc.MIME (MimeType, extensionFromMimeType, getMimeType,
                         getMimeTypeDef)
import Text.Pandoc.Options
import Text.Pandoc.Readers.Docx.StyleMap
import Text.Pandoc.Shared hiding (Element)
import qualified Text.Pandoc.UTF8 as UTF8
import Text.Pandoc.Walk
import Text.Pandoc.Writers.Math
import Text.Pandoc.Writers.Shared (fixDisplayMath)
import Text.Pandoc.BCP47 (getLang, renderLang)
import Text.Printf (printf)
import Text.TeXMath
import Text.XML.Light as XML
import Text.XML.Light.Cursor as XMLC

data ListMarker = NoMarker
                | BulletMarker
                | NumberMarker ListNumberStyle ListNumberDelim Int
                deriving (Show, Read, Eq, Ord)

listMarkerToId :: ListMarker -> String
listMarkerToId NoMarker = "990"
listMarkerToId BulletMarker = "991"
listMarkerToId (NumberMarker sty delim n) =
  '9' : '9' : styNum : delimNum : show n
  where styNum = case sty of
                      DefaultStyle -> '2'
                      Example      -> '3'
                      Decimal      -> '4'
                      LowerRoman   -> '5'
                      UpperRoman   -> '6'
                      LowerAlpha   -> '7'
                      UpperAlpha   -> '8'
        delimNum = case delim of
                      DefaultDelim -> '0'
                      Period       -> '1'
                      OneParen     -> '2'
                      TwoParens    -> '3'

data WriterEnv = WriterEnv{ envTextProperties :: [Element]
                          , envParaProperties :: [Element]
                          , envRTL            :: Bool
                          , envListLevel      :: Int
                          , envListNumId      :: Int
                          , envInDel          :: Bool
                          , envChangesAuthor  :: String
                          , envChangesDate    :: String
                          , envPrintWidth     :: Integer
                          }

defaultWriterEnv :: WriterEnv
defaultWriterEnv = WriterEnv{ envTextProperties = []
                            , envParaProperties = []
                            , envRTL = False
                            , envListLevel = -1
                            , envListNumId = 1
                            , envInDel = False
                            , envChangesAuthor  = "unknown"
                            , envChangesDate    = "1969-12-31T19:00:00Z"
                            , envPrintWidth     = 1
                            }

data WriterState = WriterState{
         stFootnotes      :: [Element]
       , stSectionIds     :: Set.Set String
       , stExternalLinks  :: M.Map String String
       , stImages         :: M.Map FilePath (String, String, Maybe MimeType, Element, B.ByteString)
       , stLists          :: [ListMarker]
       , stInsId          :: Int
       , stDelId          :: Int
       , stStyleMaps      :: StyleMaps
       , stFirstPara      :: Bool
       , stTocTitle       :: [Inline]
       , stDynamicParaProps :: Set.Set String
       , stDynamicTextProps :: Set.Set String
       }

defaultWriterState :: WriterState
defaultWriterState = WriterState{
        stFootnotes      = defaultFootnotes
      , stSectionIds     = Set.empty
      , stExternalLinks  = M.empty
      , stImages         = M.empty
      , stLists          = [NoMarker]
      , stInsId          = 1
      , stDelId          = 1
      , stStyleMaps      = defaultStyleMaps
      , stFirstPara      = False
      , stTocTitle       = [Str "Table of Contents"]
      , stDynamicParaProps = Set.empty
      , stDynamicTextProps = Set.empty
      }

type WS m = ReaderT WriterEnv (StateT WriterState m)

mknode :: Node t => String -> [(String,String)] -> t -> Element
mknode s attrs =
  add_attrs (map (\(k,v) -> Attr (nodename k) v) attrs) .  node (nodename s)

nodename :: String -> QName
nodename s = QName{ qName = name, qURI = Nothing, qPrefix = prefix }
 where (name, prefix) = case break (==':') s of
                             (xs,[])    -> (xs, Nothing)
                             (ys, _:zs) -> (zs, Just ys)

toLazy :: B.ByteString -> BL.ByteString
toLazy = BL.fromChunks . (:[])

renderXml :: Element -> BL.ByteString
renderXml elt = BL8.pack "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" <>
  UTF8.fromStringLazy (showElement elt)

renumIdMap :: Int -> [Element] -> M.Map String String
renumIdMap _ [] = M.empty
renumIdMap n (e:es)
  | Just oldId <- findAttr (QName "Id" Nothing Nothing) e =
      M.insert oldId ("rId" ++ (show n)) (renumIdMap (n+1) es)
  | otherwise = renumIdMap n es

replaceAttr :: (QName -> Bool) -> String -> [XML.Attr] -> [XML.Attr]
replaceAttr _ _ [] = []
replaceAttr f val (a:as) | f (attrKey a) =
                             (XML.Attr (attrKey a) val) : (replaceAttr f val as)
                         | otherwise = a : (replaceAttr f val as)

renumId :: (QName -> Bool) -> (M.Map String String) -> Element -> Element
renumId f renumMap e
  | Just oldId <- findAttrBy f e
  , Just newId <- M.lookup oldId renumMap =
    let attrs' = replaceAttr f newId (elAttribs e)
    in
     e { elAttribs = attrs' }
  | otherwise = e

renumIds :: (QName -> Bool) -> (M.Map String String) -> [Element] -> [Element]
renumIds f renumMap = map (renumId f renumMap)

-- | Certain characters are invalid in XML even if escaped.
-- See #1992
stripInvalidChars :: String -> String
stripInvalidChars = filter isValidChar

-- | See XML reference
isValidChar :: Char -> Bool
isValidChar (ord -> c)
  | c == 0x9                      = True
  | c == 0xA                      = True
  | c == 0xD                      = True
  | 0x20 <= c &&  c <= 0xD7FF     = True
  | 0xE000 <= c && c <= 0xFFFD    = True
  | 0x10000 <= c && c <= 0x10FFFF = True
  | otherwise                     = False

metaValueToInlines :: MetaValue -> [Inline]
metaValueToInlines (MetaString s)    = [Str s]
metaValueToInlines (MetaInlines ils) = ils
metaValueToInlines (MetaBlocks bs)   = query return bs
metaValueToInlines (MetaBool b)      = [Str $ show b]
metaValueToInlines _                 = []



writeDocx :: (PandocMonad m)
          => WriterOptions  -- ^ Writer options
          -> Pandoc         -- ^ Document to convert
          -> m BL.ByteString
writeDocx opts doc@(Pandoc meta _) = do
  let datadir = writerUserDataDir opts
  let doc' = walk fixDisplayMath $ doc
  username <- P.lookupEnv "USERNAME"
  utctime <- P.getCurrentTime
  distArchive <- (toArchive . BL.fromStrict) <$>
                      P.readDataFile Nothing "reference.docx"
  refArchive <- case writerReferenceDoc opts of
                     Just f  -> toArchive <$> P.readFileLazy f
                     Nothing -> (toArchive . BL.fromStrict) <$>
                        P.readDataFile datadir "reference.docx"

  parsedDoc <- parseXml refArchive distArchive "word/document.xml"
  let wname f qn = qPrefix qn == Just "w" && f (qName qn)
  let mbsectpr = filterElementName (wname (=="sectPr")) parsedDoc

  -- Gets the template size
  let mbpgsz = mbsectpr >>= (filterElementName (wname (=="pgSz")))
  let mbAttrSzWidth = (elAttribs <$> mbpgsz) >>= (lookupAttrBy ((=="w") . qName))

  let mbpgmar = mbsectpr >>= (filterElementName (wname (=="pgMar")))
  let mbAttrMarLeft = (elAttribs <$> mbpgmar) >>= (lookupAttrBy ((=="left") . qName))
  let mbAttrMarRight = (elAttribs <$> mbpgmar) >>= (lookupAttrBy ((=="right") . qName))

  -- Get the avaible area (converting the size and the margins to int and
  -- doing the difference
  let pgContentWidth = (-) <$> (read <$> mbAttrSzWidth ::Maybe Integer)
                       <*> (
                         (+) <$> (read <$> mbAttrMarRight ::Maybe Integer)
                         <*> (read <$> mbAttrMarLeft ::Maybe Integer)
                       )

  -- styles
  lang <- getLang opts meta
  let addLang :: Element -> Element
      addLang e = case lang >>= \l ->
                         (return . XMLC.toTree . go (renderLang l)
                                 . XMLC.fromElement) e of
                    Just (Elem e') -> e'
                    _              -> e -- return original
        where go :: String -> Cursor -> Cursor
              go l cursor = case XMLC.findRec (isLangElt . current) cursor of
                              Nothing -> cursor
                              Just t  -> XMLC.modifyContent (setval l) t
              setval :: String -> Content -> Content
              setval l (Elem e') = Elem $ e'{ elAttribs = map (setvalattr l) $
                                               elAttribs e' }
              setval _ x         = x
              setvalattr :: String -> XML.Attr -> XML.Attr
              setvalattr l (XML.Attr qn@(QName "val" _ _) _) = XML.Attr qn l
              setvalattr _ x = x
              isLangElt (Elem e') = qName (elName e') == "lang"
              isLangElt _ = False

  let stylepath = "word/styles.xml"
  styledoc <- addLang <$> parseXml refArchive distArchive stylepath

  -- parse styledoc for heading styles
  let styleMaps = getStyleMaps styledoc

  let tocTitle = fromMaybe (stTocTitle defaultWriterState) $
                    metaValueToInlines <$> lookupMeta "toc-title" meta

  let initialSt = defaultWriterState {
          stStyleMaps  = styleMaps
        , stTocTitle   = tocTitle
        }

  let isRTLmeta = case lookupMeta "dir" meta of
        Just (MetaString "rtl")        -> True
        Just (MetaInlines [Str "rtl"]) -> True
        _                              -> False

  let env = defaultWriterEnv {
          envRTL = isRTLmeta
        , envChangesAuthor = fromMaybe "unknown" username
        , envChangesDate   = formatTime defaultTimeLocale "%FT%XZ" utctime
        , envPrintWidth = (maybe 420 (\x -> quot x 20) pgContentWidth)
        }


  ((contents, footnotes), st) <- runStateT
                                 (runReaderT
                                  (writeOpenXML opts{writerWrapText = WrapNone} doc')
                                  env)
                                 initialSt
  let epochtime = floor $ utcTimeToPOSIXSeconds utctime
  let imgs = M.elems $ stImages st

  -- create entries for images in word/media/...
  let toImageEntry (_,path,_,_,img) = toEntry ("word/" ++ path) epochtime $ toLazy img
  let imageEntries = map toImageEntry imgs

  let stdAttributes =
            [("xmlns:w","http://schemas.openxmlformats.org/wordprocessingml/2006/main")
            ,("xmlns:m","http://schemas.openxmlformats.org/officeDocument/2006/math")
            ,("xmlns:r","http://schemas.openxmlformats.org/officeDocument/2006/relationships")
            ,("xmlns:o","urn:schemas-microsoft-com:office:office")
            ,("xmlns:v","urn:schemas-microsoft-com:vml")
            ,("xmlns:w10","urn:schemas-microsoft-com:office:word")
            ,("xmlns:a","http://schemas.openxmlformats.org/drawingml/2006/main")
            ,("xmlns:pic","http://schemas.openxmlformats.org/drawingml/2006/picture")
            ,("xmlns:wp","http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing")]


  parsedRels <- parseXml refArchive distArchive "word/_rels/document.xml.rels"
  let isHeaderNode e = findAttr (QName "Type" Nothing Nothing) e == Just "http://schemas.openxmlformats.org/officeDocument/2006/relationships/header"
  let isFooterNode e = findAttr (QName "Type" Nothing Nothing) e == Just "http://schemas.openxmlformats.org/officeDocument/2006/relationships/footer"
  let headers = filterElements isHeaderNode parsedRels
  let footers = filterElements isFooterNode parsedRels

  let extractTarget = findAttr (QName "Target" Nothing Nothing)

  -- we create [Content_Types].xml and word/_rels/document.xml.rels
  -- from scratch rather than reading from reference.docx,
  -- because Word sometimes changes these files when a reference.docx is modified,
  -- e.g. deleting the reference to footnotes.xml or removing default entries
  -- for image content types.

  -- [Content_Types].xml
  let mkOverrideNode (part', contentType') = mknode "Override"
               [("PartName",part'),("ContentType",contentType')] ()
  let mkImageOverride (_, imgpath, mbMimeType, _, _) =
          mkOverrideNode ("/word/" ++ imgpath,
                          fromMaybe "application/octet-stream" mbMimeType)
  let mkMediaOverride imgpath =
          mkOverrideNode ('/':imgpath, getMimeTypeDef imgpath)
  let overrides = map mkOverrideNode (
                  [("/word/webSettings.xml",
                    "application/vnd.openxmlformats-officedocument.wordprocessingml.webSettings+xml")
                  ,("/word/numbering.xml",
                    "application/vnd.openxmlformats-officedocument.wordprocessingml.numbering+xml")
                  ,("/word/settings.xml",
                    "application/vnd.openxmlformats-officedocument.wordprocessingml.settings+xml")
                  ,("/word/theme/theme1.xml",
                    "application/vnd.openxmlformats-officedocument.theme+xml")
                  ,("/word/fontTable.xml",
                    "application/vnd.openxmlformats-officedocument.wordprocessingml.fontTable+xml")
                  ,("/docProps/app.xml",
                    "application/vnd.openxmlformats-officedocument.extended-properties+xml")
                  ,("/docProps/core.xml",
                    "application/vnd.openxmlformats-package.core-properties+xml")
                  ,("/word/styles.xml",
                    "application/vnd.openxmlformats-officedocument.wordprocessingml.styles+xml")
                  ,("/word/document.xml",
                    "application/vnd.openxmlformats-officedocument.wordprocessingml.document.main+xml")
                  ,("/word/footnotes.xml",
                    "application/vnd.openxmlformats-officedocument.wordprocessingml.footnotes+xml")
                  ] ++
                  map (\x -> (maybe "" ("/word/" ++) $ extractTarget x,
                       "application/vnd.openxmlformats-officedocument.wordprocessingml.header+xml")) headers ++
                  map (\x -> (maybe "" ("/word/" ++) $ extractTarget x,
                       "application/vnd.openxmlformats-officedocument.wordprocessingml.footer+xml")) footers) ++
                    map mkImageOverride imgs ++
                    map mkMediaOverride [ eRelativePath e | e <- zEntries refArchive
                                        , "word/media/" `isPrefixOf` eRelativePath e ]

  let defaultnodes = [mknode "Default"
              [("Extension","xml"),("ContentType","application/xml")] (),
             mknode "Default"
              [("Extension","rels"),("ContentType","application/vnd.openxmlformats-package.relationships+xml")] ()]
  let contentTypesDoc = mknode "Types" [("xmlns","http://schemas.openxmlformats.org/package/2006/content-types")] $ defaultnodes ++ overrides
  let contentTypesEntry = toEntry "[Content_Types].xml" epochtime
        $ renderXml contentTypesDoc

  -- word/_rels/document.xml.rels
  let toBaseRel (url', id', target') = mknode "Relationship"
                                          [("Type",url')
                                          ,("Id",id')
                                          ,("Target",target')] ()
  let baserels' = map toBaseRel
                    [("http://schemas.openxmlformats.org/officeDocument/2006/relationships/numbering",
                      "rId1",
                      "numbering.xml")
                    ,("http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles",
                      "rId2",
                      "styles.xml")
                    ,("http://schemas.openxmlformats.org/officeDocument/2006/relationships/settings",
                      "rId3",
                      "settings.xml")
                    ,("http://schemas.openxmlformats.org/officeDocument/2006/relationships/webSettings",
                      "rId4",
                      "webSettings.xml")
                    ,("http://schemas.openxmlformats.org/officeDocument/2006/relationships/fontTable",
                      "rId5",
                      "fontTable.xml")
                    ,("http://schemas.openxmlformats.org/officeDocument/2006/relationships/theme",
                      "rId6",
                      "theme/theme1.xml")
                    ,("http://schemas.openxmlformats.org/officeDocument/2006/relationships/footnotes",
                      "rId7",
                      "footnotes.xml")
                    ]

  let idMap = renumIdMap (length baserels' + 1) (headers ++ footers)
  let renumHeaders = renumIds (\q -> qName q == "Id") idMap headers
  let renumFooters = renumIds (\q -> qName q == "Id") idMap footers
  let baserels = baserels' ++ renumHeaders ++ renumFooters
  let toImgRel (ident,path,_,_,_) =  mknode "Relationship" [("Type","http://schemas.openxmlformats.org/officeDocument/2006/relationships/image"),("Id",ident),("Target",path)] ()
  let imgrels = map toImgRel imgs
  let toLinkRel (src,ident) =  mknode "Relationship" [("Type","http://schemas.openxmlformats.org/officeDocument/2006/relationships/hyperlink"),("Id",ident),("Target",src),("TargetMode","External") ] ()
  let linkrels = map toLinkRel $ M.toList $ stExternalLinks st
  let reldoc = mknode "Relationships" [("xmlns","http://schemas.openxmlformats.org/package/2006/relationships")] $ baserels ++ imgrels ++ linkrels
  let relEntry = toEntry "word/_rels/document.xml.rels" epochtime
        $ renderXml reldoc


  -- adjust contents to add sectPr from reference.docx
  let sectpr = case mbsectpr of
        Just sectpr' -> let cs = renumIds
                                 (\q -> qName q == "id" && qPrefix q == Just "r")
                                 idMap
                                 (elChildren sectpr')
                        in
                         add_attrs (elAttribs sectpr') $ mknode "w:sectPr" [] cs
        Nothing      -> (mknode "w:sectPr" [] ())

  -- let sectpr = fromMaybe (mknode "w:sectPr" [] ()) mbsectpr'
  let contents' = contents ++ [sectpr]
  let docContents = mknode "w:document" stdAttributes
                    $ mknode "w:body" [] contents'



  -- word/document.xml
  let contentEntry = toEntry "word/document.xml" epochtime
                     $ renderXml docContents

  -- footnotes
  let notes = mknode "w:footnotes" stdAttributes footnotes
  let footnotesEntry = toEntry "word/footnotes.xml" epochtime $ renderXml notes

  -- footnote rels
  let footnoteRelEntry = toEntry "word/_rels/footnotes.xml.rels" epochtime
        $ renderXml $ mknode "Relationships" [("xmlns","http://schemas.openxmlformats.org/package/2006/relationships")]
        linkrels

  -- styles

  -- We only want to inject paragraph and text properties that
  -- are not already in the style map. Note that keys in the stylemap
  -- are normalized as lowercase.
  let newDynamicParaProps = filter
        (\sty -> isNothing $ M.lookup (toLower <$> sty) $ getMap $ sParaStyleMap styleMaps)
        (Set.toList $ stDynamicParaProps st)

      newDynamicTextProps = filter
        (\sty -> isNothing $ M.lookup (toLower <$> sty) $ getMap $ sCharStyleMap styleMaps)
        (Set.toList $ stDynamicTextProps st)

  let newstyles = map newParaPropToOpenXml newDynamicParaProps ++
                  map newTextPropToOpenXml newDynamicTextProps ++
                  (case writerHighlightStyle opts of
                        Nothing  -> []
                        Just sty -> (styleToOpenXml styleMaps sty))
  let styledoc' = styledoc{ elContent = elContent styledoc ++
                                           map Elem newstyles }
  let styleEntry = toEntry stylepath epochtime $ renderXml styledoc'

  -- construct word/numbering.xml
  let numpath = "word/numbering.xml"
  numbering <- parseXml refArchive distArchive numpath
  newNumElts <- mkNumbering (stLists st)
  let allElts = onlyElems (elContent numbering) ++ newNumElts
  let numEntry = toEntry numpath epochtime $ renderXml numbering{ elContent =
                       -- we want all the abstractNums first, then the nums,
                       -- otherwise things break:
                       [Elem e | e <- allElts
                               , qName (elName e) == "abstractNum" ] ++
                       [Elem e | e <- allElts
                               , qName (elName e) == "num" ] }

  let keywords = case lookupMeta "keywords" meta of
                       Just (MetaList xs)           -> map stringify xs
                       _                            -> []

  let docPropsPath = "docProps/core.xml"
  let docProps = mknode "cp:coreProperties"
          [("xmlns:cp","http://schemas.openxmlformats.org/package/2006/metadata/core-properties")
          ,("xmlns:dc","http://purl.org/dc/elements/1.1/")
          ,("xmlns:dcterms","http://purl.org/dc/terms/")
          ,("xmlns:dcmitype","http://purl.org/dc/dcmitype/")
          ,("xmlns:xsi","http://www.w3.org/2001/XMLSchema-instance")]
          $ mknode "dc:title" [] (stringify $ docTitle meta)
          : mknode "dc:creator" [] (intercalate "; " (map stringify $ docAuthors meta))
          : mknode "cp:keywords" [] (intercalate ", " keywords)
          : (\x -> [ mknode "dcterms:created" [("xsi:type","dcterms:W3CDTF")] x
                   , mknode "dcterms:modified" [("xsi:type","dcterms:W3CDTF")] x
                   ]) (formatTime defaultTimeLocale "%FT%XZ" utctime)
  let docPropsEntry = toEntry docPropsPath epochtime $ renderXml docProps

  let relsPath = "_rels/.rels"
  let rels = mknode "Relationships" [("xmlns", "http://schemas.openxmlformats.org/package/2006/relationships")]
        $ map (\attrs -> mknode "Relationship" attrs ())
        [ [("Id","rId1")
          ,("Type","http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument")
          ,("Target","word/document.xml")]
        , [("Id","rId4")
          ,("Type","http://schemas.openxmlformats.org/officeDocument/2006/relationships/extended-properties")
          ,("Target","docProps/app.xml")]
        , [("Id","rId3")
          ,("Type","http://schemas.openxmlformats.org/package/2006/relationships/metadata/core-properties")
          ,("Target","docProps/core.xml")]
        ]
  let relsEntry = toEntry relsPath epochtime $ renderXml rels

  -- we use dist archive for settings.xml, because Word sometimes
  -- adds references to footnotes or endnotes we don't have...
  -- we do, however, copy some settings over from reference
  let settingsPath = "word/settings.xml"
      settingsList = [ "w:autoHyphenation"
                     , "w:consecutiveHyphenLimit"
                     , "w:hyphenationZone"
                     , "w:doNotHyphenateCap"
                     ]
  settingsEntry <- copyChildren refArchive distArchive settingsPath epochtime settingsList

  let entryFromArchive arch path =
         maybe (fail $ path ++ " missing in reference docx")
               return
               (findEntryByPath path arch `mplus` findEntryByPath path distArchive)
  docPropsAppEntry <- entryFromArchive refArchive "docProps/app.xml"
  themeEntry <- entryFromArchive refArchive "word/theme/theme1.xml"
  fontTableEntry <- entryFromArchive refArchive "word/fontTable.xml"
  webSettingsEntry <- entryFromArchive refArchive "word/webSettings.xml"
  headerFooterEntries <- mapM (entryFromArchive refArchive) $
                     mapMaybe (fmap ("word/" ++) . extractTarget)
                     (headers ++ footers)
  let miscRelEntries = [ e | e <- zEntries refArchive
                       , "word/_rels/" `isPrefixOf` (eRelativePath e)
                       , ".xml.rels" `isSuffixOf` (eRelativePath e)
                       , eRelativePath e /= "word/_rels/document.xml.rels"
                       , eRelativePath e /= "word/_rels/footnotes.xml.rels" ]
  let otherMediaEntries = [ e | e <- zEntries refArchive
                          , "word/media/" `isPrefixOf` eRelativePath e ]

  -- Create archive
  let archive = foldr addEntryToArchive emptyArchive $
                  contentTypesEntry : relsEntry : contentEntry : relEntry :
                  footnoteRelEntry : numEntry : styleEntry : footnotesEntry :
                  docPropsEntry : docPropsAppEntry : themeEntry :
                  fontTableEntry : settingsEntry : webSettingsEntry :
                  imageEntries ++ headerFooterEntries ++
                  miscRelEntries ++ otherMediaEntries
  return $ fromArchive archive


newParaPropToOpenXml :: String -> Element
newParaPropToOpenXml s =
  let styleId = filter (not . isSpace) s
  in mknode "w:style" [ ("w:type", "paragraph")
                      , ("w:customStyle", "1")
                      , ("w:styleId", styleId)]
     [ mknode "w:name" [("w:val", s)] ()
     , mknode "w:basedOn" [("w:val","BodyText")] ()
     , mknode "w:qFormat" [] ()
     ]

newTextPropToOpenXml :: String -> Element
newTextPropToOpenXml s =
  let styleId = filter (not . isSpace) s
  in mknode "w:style" [ ("w:type", "character")
                      , ("w:customStyle", "1")
                      , ("w:styleId", styleId)]
     [ mknode "w:name" [("w:val", s)] ()
     , mknode "w:basedOn" [("w:val","BodyTextChar")] ()
     ]

styleToOpenXml :: StyleMaps -> Style -> [Element]
styleToOpenXml sm style =
  maybeToList parStyle ++ mapMaybe toStyle alltoktypes
  where alltoktypes = enumFromTo KeywordTok NormalTok
        toStyle toktype | hasStyleName (show toktype) (sCharStyleMap sm) = Nothing
                        | otherwise = Just $
                          mknode "w:style" [("w:type","character"),
                           ("w:customStyle","1"),("w:styleId",show toktype)]
                             [ mknode "w:name" [("w:val",show toktype)] ()
                             , mknode "w:basedOn" [("w:val","VerbatimChar")] ()
                             , mknode "w:rPr" [] $
                               [ mknode "w:color" [("w:val",tokCol toktype)] ()
                                 | tokCol toktype /= "auto" ] ++
                               [ mknode "w:shd" [("w:val","clear"),("w:fill",tokBg toktype)] ()
                                 | tokBg toktype /= "auto" ] ++
                               [ mknode "w:b" [] () | tokFeature tokenBold toktype ] ++
                               [ mknode "w:i" [] () | tokFeature tokenItalic toktype ] ++
                               [ mknode "w:u" [] () | tokFeature tokenUnderline toktype ]
                             ]
        tokStyles = tokenStyles style
        tokFeature f toktype = maybe False f $ lookup toktype tokStyles
        tokCol toktype = maybe "auto" (drop 1 . fromColor)
                         $ (tokenColor =<< lookup toktype tokStyles)
                           `mplus` defaultColor style
        tokBg toktype = maybe "auto" (drop 1 . fromColor)
                         $ (tokenBackground =<< lookup toktype tokStyles)
                           `mplus` backgroundColor style
        parStyle | hasStyleName "Source Code" (sParaStyleMap sm) = Nothing
                 | otherwise = Just $
                   mknode "w:style" [("w:type","paragraph"),
                           ("w:customStyle","1"),("w:styleId","SourceCode")]
                             [ mknode "w:name" [("w:val","Source Code")] ()
                             , mknode "w:basedOn" [("w:val","Normal")] ()
                             , mknode "w:link" [("w:val","VerbatimChar")] ()
                             , mknode "w:pPr" []
                               $ mknode "w:wordWrap" [("w:val","off")] ()
                               : ( maybe [] (\col -> [mknode "w:shd" [("w:val","clear"),("w:fill",drop 1 $ fromColor col)] ()])
                                 $ backgroundColor style )
                             ]

copyChildren :: (PandocMonad m) => Archive -> Archive -> String -> Integer -> [String] -> m Entry
copyChildren refArchive distArchive path timestamp elNames = do
  ref  <- parseXml refArchive distArchive path
  dist <- parseXml distArchive distArchive path
  return $ toEntry path timestamp $ renderXml dist{
      elContent = elContent dist ++ copyContent ref
    }
  where
    strName QName{qName=name, qPrefix=prefix}
      | Just p <- prefix = p++":"++name
      | otherwise        = name
    shouldCopy = (`elem` elNames) . strName
    cleanElem el@Element{elName=name} = Elem el{elName=name{qURI=Nothing}}
    copyContent = map cleanElem . filterChildrenName shouldCopy

-- this is the lowest number used for a list numId
baseListId :: Int
baseListId = 1000

mkNumbering :: (PandocMonad m) => [ListMarker] -> m [Element]
mkNumbering lists = do
  elts <- mapM mkAbstractNum (ordNub lists)
  return $ elts ++ zipWith mkNum lists [baseListId..(baseListId + length lists - 1)]

mkNum :: ListMarker -> Int -> Element
mkNum marker numid =
  mknode "w:num" [("w:numId",show numid)]
   $ mknode "w:abstractNumId" [("w:val",listMarkerToId marker)] ()
   : case marker of
       NoMarker     -> []
       BulletMarker -> []
       NumberMarker _ _ start ->
          map (\lvl -> mknode "w:lvlOverride" [("w:ilvl",show (lvl :: Int))]
              $ mknode "w:startOverride" [("w:val",show start)] ()) [0..6]

mkAbstractNum :: (PandocMonad m) => ListMarker -> m Element
mkAbstractNum marker = do
  gen <- P.newStdGen
  let (nsid, _) = randomR (0x10000000 :: Integer, 0xFFFFFFFF :: Integer) gen
  return $ mknode "w:abstractNum" [("w:abstractNumId",listMarkerToId marker)]
    $ mknode "w:nsid" [("w:val", printf "%8x" nsid)] ()
    : mknode "w:multiLevelType" [("w:val","multilevel")] ()
    : map (mkLvl marker) [0..6]

mkLvl :: ListMarker -> Int -> Element
mkLvl marker lvl =
  mknode "w:lvl" [("w:ilvl",show lvl)] $
    [ mknode "w:start" [("w:val",start)] ()
      | marker /= NoMarker && marker /= BulletMarker ] ++
    [ mknode "w:numFmt" [("w:val",fmt)] ()
    , mknode "w:lvlText" [("w:val",lvltxt)] ()
    , mknode "w:lvlJc" [("w:val","left")] ()
    , mknode "w:pPr" []
      [ mknode "w:tabs" []
        $ mknode "w:tab" [("w:val","num"),("w:pos",show $ lvl * step)] ()
      , mknode "w:ind" [("w:left",show $ lvl * step + hang),("w:hanging",show hang)] ()
      ]
    ]
    where (fmt, lvltxt, start) =
            case marker of
                 NoMarker             -> ("bullet"," ","1")
                 BulletMarker         -> ("bullet",bulletFor lvl,"1")
                 NumberMarker st de n -> (styleFor st lvl
                                         ,patternFor de ("%" ++ show (lvl + 1))
                                         ,show n)
          step = 720
          hang = 480
          bulletFor 0 = "\x2022"  -- filled circle
          bulletFor 1 = "\x2013"  -- en dash
          bulletFor 2 = "\x2022"  -- hyphen bullet
          bulletFor 3 = "\x2013"
          bulletFor 4 = "\x2022"
          bulletFor 5 = "\x2013"
          bulletFor _ = "\x2022"
          styleFor UpperAlpha _   = "upperLetter"
          styleFor LowerAlpha _   = "lowerLetter"
          styleFor UpperRoman _   = "upperRoman"
          styleFor LowerRoman _   = "lowerRoman"
          styleFor Decimal _      = "decimal"
          styleFor DefaultStyle 1 = "decimal"
          styleFor DefaultStyle 2 = "lowerLetter"
          styleFor DefaultStyle 3 = "lowerRoman"
          styleFor DefaultStyle 4 = "decimal"
          styleFor DefaultStyle 5 = "lowerLetter"
          styleFor DefaultStyle 6 = "lowerRoman"
          styleFor _ _            = "decimal"
          patternFor OneParen s  = s ++ ")"
          patternFor TwoParens s = "(" ++ s ++ ")"
          patternFor _ s         = s ++ "."

getNumId :: (PandocMonad m) => WS m Int
getNumId = (((baseListId - 1) +) . length) `fmap` gets stLists


makeTOC :: (PandocMonad m) => WriterOptions -> WS m [Element]
makeTOC opts | writerTableOfContents opts = do
  let depth = "1-"++(show (writerTOCDepth opts))
  let tocCmd = "TOC \\o \""++depth++"\" \\h \\z \\u"
  tocTitle <- gets stTocTitle
  title <- withParaPropM (pStyleM "TOC Heading") (blocksToOpenXML opts [Para tocTitle])
  return $
    [mknode "w:sdt" [] ([
      mknode "w:sdtPr" [] (
        mknode "w:docPartObj" [] (
          [mknode "w:docPartGallery" [("w:val","Table of Contents")] (),
          mknode "w:docPartUnique" [] ()]
        ) -- w:docPartObj
      ), -- w:sdtPr
      mknode "w:sdtContent" [] (title++[
        mknode "w:p" [] (
          mknode "w:r" [] ([
            mknode "w:fldChar" [("w:fldCharType","begin"),("w:dirty","true")] (),
            mknode "w:instrText" [("xml:space","preserve")] tocCmd,
            mknode "w:fldChar" [("w:fldCharType","separate")] (),
            mknode "w:fldChar" [("w:fldCharType","end")] ()
          ]) -- w:r
        ) -- w:p
      ])
    ])] -- w:sdt
makeTOC _ = return []


-- | Convert Pandoc document to two lists of
-- OpenXML elements (the main document and footnotes).
writeOpenXML :: (PandocMonad m) => WriterOptions -> Pandoc -> WS m ([Element], [Element])
writeOpenXML opts (Pandoc meta blocks) = do
  let tit = docTitle meta ++ case lookupMeta "subtitle" meta of
                                  Just (MetaBlocks [Plain xs]) -> LineBreak : xs
                                  _ -> []
  let auths = docAuthors meta
  let dat = docDate meta
  let abstract' = case lookupMeta "abstract" meta of
                       Just (MetaBlocks bs)   -> bs
                       Just (MetaInlines ils) -> [Plain ils]
                       _                      -> []
  let subtitle' = case lookupMeta "subtitle" meta of
                       Just (MetaBlocks [Plain xs]) -> xs
                       Just (MetaBlocks [Para  xs]) -> xs
                       Just (MetaInlines xs)        -> xs
                       _                            -> []
  title <- withParaPropM (pStyleM "Title") $ blocksToOpenXML opts [Para tit | not (null tit)]
  subtitle <- withParaPropM (pStyleM "Subtitle") $ blocksToOpenXML opts [Para subtitle' | not (null subtitle')]
  authors <- withParaProp (pCustomStyle "Author") $ blocksToOpenXML opts $
       map Para auths
  date <- withParaPropM (pStyleM "Date") $ blocksToOpenXML opts [Para dat | not (null dat)]
  abstract <- if null abstract'
                 then return []
                 else withParaProp (pCustomStyle "Abstract") $ blocksToOpenXML opts abstract'
  let convertSpace (Str x : Space : Str y : xs) = Str (x ++ " " ++ y) : xs
      convertSpace (Str x : Str y : xs)         = Str (x ++ y) : xs
      convertSpace xs                           = xs
  let blocks' = bottomUp convertSpace blocks
  doc' <- (setFirstPara >> blocksToOpenXML opts blocks')
  notes' <- reverse `fmap` gets stFootnotes
  toc <- makeTOC opts
  let meta' = title ++ subtitle ++ authors ++ date ++ abstract ++ toc
  return (meta' ++ doc', notes')

-- | Convert a list of Pandoc blocks to OpenXML.
blocksToOpenXML :: (PandocMonad m) => WriterOptions -> [Block] -> WS m [Element]
blocksToOpenXML opts bls = concat `fmap` mapM (blockToOpenXML opts) bls

pCustomStyle :: String -> Element
pCustomStyle sty = mknode "w:pStyle" [("w:val",sty)] ()

pStyleM :: (PandocMonad m) => String -> WS m XML.Element
pStyleM styleName = do
  styleMaps <- gets stStyleMaps
  let sty' = getStyleId styleName $ sParaStyleMap styleMaps
  return $ mknode "w:pStyle" [("w:val",sty')] ()

rCustomStyle :: String -> Element
rCustomStyle sty = mknode "w:rStyle" [("w:val",sty)] ()

rStyleM :: (PandocMonad m) => String -> WS m XML.Element
rStyleM styleName = do
  styleMaps <- gets stStyleMaps
  let sty' = getStyleId styleName $ sCharStyleMap styleMaps
  return $ mknode "w:rStyle" [("w:val",sty')] ()

getUniqueId :: (PandocMonad m) => m String
-- the + 20 is to ensure that there are no clashes with the rIds
-- already in word/document.xml.rel
getUniqueId = (show . (+ 20)) <$> P.newUniqueHash

-- | Key for specifying user-defined docx styles.
dynamicStyleKey :: String
dynamicStyleKey = "custom-style"

-- | Convert a Pandoc block element to OpenXML.
blockToOpenXML :: (PandocMonad m) => WriterOptions -> Block -> WS m [Element]
blockToOpenXML opts blk = withDirection $ blockToOpenXML' opts blk

blockToOpenXML' :: (PandocMonad m) => WriterOptions -> Block -> WS m [Element]
blockToOpenXML' _ Null = return []
blockToOpenXML' opts (Div (ident,classes,kvs) bs) = do
  stylemod <- case lookup dynamicStyleKey kvs of
                   Just sty -> do
                      modify $ \s ->
                        s{stDynamicParaProps = Set.insert sty
                             (stDynamicParaProps s)}
                      return $ withParaPropM (pStyleM sty)
                   _ -> return id
  dirmod <- case lookup "dir" kvs of
                 Just "rtl" -> return $ local (\env -> env { envRTL = True })
                 Just "ltr" -> return $ local (\env -> env { envRTL = False })
                 _ -> return id
  let (hs, bs') = if "references" `elem` classes
                     then span isHeaderBlock bs
                     else ([], bs)
  let bibmod = if "references" `elem` classes
                  then withParaPropM (pStyleM "Bibliography")
                  else id
  header <- dirmod $ stylemod $ blocksToOpenXML opts hs
  contents <- dirmod $ bibmod $ stylemod $ blocksToOpenXML opts bs'
  if null ident
     then return $ header ++ contents
     else do
       id' <- getUniqueId
       let bookmarkStart = mknode "w:bookmarkStart" [("w:id", id')
                                                    ,("w:name",ident)] ()
       let bookmarkEnd = mknode "w:bookmarkEnd" [("w:id", id')] ()
       return $ bookmarkStart : header ++ contents ++ [bookmarkEnd]
blockToOpenXML' opts (Header lev (ident,_,_) lst) = do
  setFirstPara
  paraProps <- withParaPropM (pStyleM ("Heading "++show lev)) $
                    getParaProps False
  contents <- inlinesToOpenXML opts lst
  if null ident
     then return [mknode "w:p" [] (paraProps ++contents)]
     else do
       let bookmarkName = ident
       modify $ \s -> s{ stSectionIds = Set.insert bookmarkName
                                      $ stSectionIds s }
       id' <- getUniqueId
       let bookmarkStart = mknode "w:bookmarkStart" [("w:id", id')
                                               ,("w:name",bookmarkName)] ()
       let bookmarkEnd = mknode "w:bookmarkEnd" [("w:id", id')] ()
       return [mknode "w:p" [] (paraProps ++
               [bookmarkStart] ++ contents ++ [bookmarkEnd])]
blockToOpenXML' opts (Plain lst) = withParaProp (pCustomStyle "Compact")
  $ blockToOpenXML opts (Para lst)
-- title beginning with fig: indicates that the image is a figure
blockToOpenXML' opts (Para [Image attr alt (src,'f':'i':'g':':':tit)]) = do
  setFirstPara
  let prop = pCustomStyle $
        if null alt
        then "Figure"
        else "CaptionedFigure"
  paraProps <- local (\env -> env { envParaProperties = prop : envParaProperties env }) (getParaProps False)
  contents <- inlinesToOpenXML opts [Image attr alt (src,tit)]
  captionNode <- withParaProp (pCustomStyle "ImageCaption")
                 $ blockToOpenXML opts (Para alt)
  return $ mknode "w:p" [] (paraProps ++ contents) : captionNode
-- fixDisplayMath sometimes produces a Para [] as artifact
blockToOpenXML' _ (Para []) = return []
blockToOpenXML' opts (Para lst) = do
  isFirstPara <- gets stFirstPara
  paraProps <- getParaProps $ case lst of
                               [Math DisplayMath _] -> True
                               _                    -> False
  bodyTextStyle <- pStyleM "Body Text"
  let paraProps' = case paraProps of
        [] | isFirstPara -> [mknode "w:pPr" [] [pCustomStyle "FirstParagraph"]]
        []               -> [mknode "w:pPr" [] [bodyTextStyle]]
        ps               -> ps
  modify $ \s -> s { stFirstPara = False }
  contents <- inlinesToOpenXML opts lst
  return [mknode "w:p" [] (paraProps' ++ contents)]
blockToOpenXML' opts (LineBlock lns) = blockToOpenXML opts $ linesToPara lns
blockToOpenXML' _ b@(RawBlock format str)
  | format == Format "openxml" = return [ x | Elem x <- parseXML str ]
  | otherwise                  = do
      report $ BlockNotRendered b
      return []
blockToOpenXML' opts (BlockQuote blocks) = do
  p <- withParaPropM (pStyleM "Block Text") $ blocksToOpenXML opts blocks
  setFirstPara
  return p
blockToOpenXML' opts (CodeBlock attrs str) = do
  p <- withParaProp (pCustomStyle "SourceCode") (blockToOpenXML opts $ Para [Code attrs str])
  setFirstPara
  return p
blockToOpenXML' _ HorizontalRule = do
  setFirstPara
  return [
    mknode "w:p" [] $ mknode "w:r" [] $ mknode "w:pict" []
    $ mknode "v:rect" [("style","width:0;height:1.5pt"),
                       ("o:hralign","center"),
                       ("o:hrstd","t"),("o:hr","t")] () ]
blockToOpenXML' opts (Table caption aligns widths headers rows) = do
  setFirstPara
  let captionStr = stringify caption
  caption' <- if null caption
                 then return []
                 else withParaProp (pCustomStyle "TableCaption")
                      $ blockToOpenXML opts (Para caption)
  let alignmentFor al = mknode "w:jc" [("w:val",alignmentToString al)] ()
  let cellToOpenXML (al, cell) = withParaProp (alignmentFor al)
                                    $ blocksToOpenXML opts cell
  headers' <- mapM cellToOpenXML $ zip aligns headers
  rows' <- mapM (mapM cellToOpenXML . zip aligns) rows
  let borderProps = mknode "w:tcPr" []
                    [ mknode "w:tcBorders" []
                      $ mknode "w:bottom" [("w:val","single")] ()
                    , mknode "w:vAlign" [("w:val","bottom")] () ]
  let emptyCell = [mknode "w:p" [] [mknode "w:pPr" [] [pCustomStyle "Compact"]]]
  let mkcell border contents = mknode "w:tc" []
                            $ [ borderProps | border ] ++
                            if null contents
                               then emptyCell
                               else contents
  let mkrow border cells = mknode "w:tr" [] $
                        [mknode "w:trPr" [] [
                          mknode "w:cnfStyle" [("w:firstRow","1")] ()] | border]
                        ++ map (mkcell border) cells
  let textwidth = 7920  -- 5.5 in in twips, 1/20 pt
  let fullrow = 5000 -- 100% specified in pct
  let rowwidth = fullrow * sum widths
  let mkgridcol w = mknode "w:gridCol"
                       [("w:w", show (floor (textwidth * w) :: Integer))] ()
  let hasHeader = not (all null headers)
  return $
    caption' ++
    [mknode "w:tbl" []
      ( mknode "w:tblPr" []
        (   mknode "w:tblStyle" [("w:val","Table")] () :
            mknode "w:tblW" [("w:type", "pct"), ("w:w", show rowwidth)] () :
            mknode "w:tblLook" [("w:firstRow","1") | hasHeader ] () :
          [ mknode "w:tblCaption" [("w:val", captionStr)] ()
          | not (null caption) ] )
      : mknode "w:tblGrid" []
        (if all (==0) widths
            then []
            else map mkgridcol widths)
      : [ mkrow True headers' | hasHeader ] ++
      map (mkrow False) rows'
      )]
blockToOpenXML' opts (BulletList lst) = do
  let marker = BulletMarker
  addList marker
  numid  <- getNumId
  l <- asList $ concat `fmap` mapM (listItemToOpenXML opts numid) lst
  setFirstPara
  return l
blockToOpenXML' opts (OrderedList (start, numstyle, numdelim) lst) = do
  let marker = NumberMarker numstyle numdelim start
  addList marker
  numid  <- getNumId
  l <- asList $ concat `fmap` mapM (listItemToOpenXML opts numid) lst
  setFirstPara
  return l
blockToOpenXML' opts (DefinitionList items) = do
  l <- concat `fmap` mapM (definitionListItemToOpenXML opts) items
  setFirstPara
  return l

definitionListItemToOpenXML  :: (PandocMonad m) => WriterOptions -> ([Inline],[[Block]]) -> WS m [Element]
definitionListItemToOpenXML opts (term,defs) = do
  term' <- withParaProp (pCustomStyle "DefinitionTerm")
           $ blockToOpenXML opts (Para term)
  defs' <- withParaProp (pCustomStyle "Definition")
           $ concat `fmap` mapM (blocksToOpenXML opts) defs
  return $ term' ++ defs'

addList :: (PandocMonad m) => ListMarker -> WS m ()
addList marker = do
  lists <- gets stLists
  modify $ \st -> st{ stLists = lists ++ [marker] }

listItemToOpenXML :: (PandocMonad m) => WriterOptions -> Int -> [Block] -> WS m [Element]
listItemToOpenXML _ _ []                   = return []
listItemToOpenXML opts numid (first:rest) = do
  first' <- withNumId numid $ blockToOpenXML opts first
  -- baseListId is the code for no list marker:
  rest'  <- withNumId baseListId $ blocksToOpenXML opts rest
  return $ first' ++ rest'

alignmentToString :: Alignment -> [Char]
alignmentToString alignment = case alignment of
                                 AlignLeft    -> "left"
                                 AlignRight   -> "right"
                                 AlignCenter  -> "center"
                                 AlignDefault -> "left"

-- | Convert a list of inline elements to OpenXML.
inlinesToOpenXML :: (PandocMonad m) => WriterOptions -> [Inline] -> WS m [Element]
inlinesToOpenXML opts lst = concat `fmap` mapM (inlineToOpenXML opts) lst

withNumId :: (PandocMonad m) => Int -> WS m a -> WS m a
withNumId numid = local $ \env -> env{ envListNumId = numid }

asList :: (PandocMonad m) => WS m a -> WS m a
asList = local $ \env -> env{ envListLevel = envListLevel env + 1 }

getTextProps :: (PandocMonad m) => WS m [Element]
getTextProps = do
  props <- asks envTextProperties
  return $ if null props
              then []
              else [mknode "w:rPr" [] props]

withTextProp :: PandocMonad m => Element -> WS m a -> WS m a
withTextProp d p =
  local (\env -> env {envTextProperties = d : envTextProperties env}) p

withTextPropM :: PandocMonad m => WS m Element -> WS m a -> WS m a
withTextPropM = (. flip withTextProp) . (>>=)

getParaProps :: PandocMonad m => Bool -> WS m [Element]
getParaProps displayMathPara = do
  props <- asks envParaProperties
  listLevel <- asks envListLevel
  numid <- asks envListNumId
  let listPr = if listLevel >= 0 && not displayMathPara
                  then [ mknode "w:numPr" []
                         [ mknode "w:numId" [("w:val",show numid)] ()
                         , mknode "w:ilvl" [("w:val",show listLevel)] () ]
                       ]
                  else []
  return $ case props ++ listPr of
                [] -> []
                ps -> [mknode "w:pPr" [] ps]

withParaProp :: PandocMonad m => Element -> WS m a -> WS m a
withParaProp d p =
  local (\env -> env {envParaProperties = d : envParaProperties env}) p

withParaPropM :: PandocMonad m => WS m Element -> WS m a -> WS m a
withParaPropM = (. flip withParaProp) . (>>=)

formattedString :: PandocMonad m => String -> WS m [Element]
formattedString str =
  -- properly handle soft hyphens
  case splitBy (=='\173') str of
      [w] -> formattedString' w
      ws  -> do
         sh <- formattedRun [mknode "w:softHyphen" [] ()]
         (intercalate sh) <$> mapM formattedString' ws

formattedString' :: PandocMonad m => String -> WS m [Element]
formattedString' str = do
  inDel <- asks envInDel
  formattedRun [ mknode (if inDel then "w:delText" else "w:t")
                 [("xml:space","preserve")] (stripInvalidChars str) ]

formattedRun :: PandocMonad m => [Element] -> WS m [Element]
formattedRun els = do
  props <- getTextProps
  return [ mknode "w:r" [] $ props ++ els ]

setFirstPara :: PandocMonad m => WS m ()
setFirstPara =  modify $ \s -> s { stFirstPara = True }

-- | Convert an inline element to OpenXML.
inlineToOpenXML :: PandocMonad m => WriterOptions -> Inline -> WS m [Element]
inlineToOpenXML opts il = withDirection $ inlineToOpenXML' opts il

inlineToOpenXML' :: PandocMonad m => WriterOptions -> Inline -> WS m [Element]
inlineToOpenXML' _ (Str str) =
  formattedString str
inlineToOpenXML' opts Space = inlineToOpenXML opts (Str " ")
inlineToOpenXML' opts SoftBreak = inlineToOpenXML opts (Str " ")
inlineToOpenXML' opts (Span (ident,classes,kvs) ils) = do
  stylemod <- case lookup dynamicStyleKey kvs of
                   Just sty -> do
                      modify $ \s ->
                        s{stDynamicTextProps = Set.insert sty
                              (stDynamicTextProps s)}
                      return $ withTextProp (rCustomStyle sty)
                   _ -> return id
  let dirmod = case lookup "dir" kvs of
                 Just "rtl" -> local (\env -> env { envRTL = True })
                 Just "ltr" -> local (\env -> env { envRTL = False })
                 _          -> id
  let off x = withTextProp (mknode x [("w:val","0")] ())
  let pmod =  (if "csl-no-emph" `elem` classes then off "w:i" else id) .
              (if "csl-no-strong" `elem` classes then off "w:b" else id) .
              (if "csl-no-smallcaps" `elem` classes
                  then off "w:smallCaps"
                  else id)
  insmod <- if "insertion" `elem` classes
               then do
                 defaultAuthor <- asks envChangesAuthor
                 defaultDate <- asks envChangesDate
                 let author = fromMaybe defaultAuthor (lookup "author" kvs)
                     date   = fromMaybe defaultDate (lookup "date" kvs)
                 insId <- gets stInsId
                 modify $ \s -> s{stInsId = (insId + 1)}
                 return $ \f -> do
                   x <- f
                   return $ [ mknode "w:ins"
                              [("w:id", (show insId)),
                              ("w:author", author),
                              ("w:date", date)] x]
               else return id
  delmod <- if "insertion" `elem` classes
               then do
                 defaultAuthor <- asks envChangesAuthor
                 defaultDate <- asks envChangesDate
                 let author = fromMaybe defaultAuthor (lookup "author" kvs)
                     date   = fromMaybe defaultDate (lookup "date" kvs)
                 insId <- gets stInsId
                 modify $ \s -> s{stInsId = (insId + 1)}
                 return $ \f -> do
                   x <- f
                   return [mknode "w:ins"
                           [("w:id", (show insId)),
                           ("w:author", author),
                           ("w:date", date)] x]
               else return id
  contents <- insmod $ delmod $ dirmod $ stylemod $ pmod
                     $ inlinesToOpenXML opts ils
  if null ident
     then return contents
     else do
       id' <- getUniqueId
       let bookmarkStart = mknode "w:bookmarkStart" [("w:id", id')
                                                    ,("w:name",ident)] ()
       let bookmarkEnd = mknode "w:bookmarkEnd" [("w:id", id')] ()
       return $ bookmarkStart : contents ++ [bookmarkEnd]
inlineToOpenXML' opts (Strong lst) =
  withTextProp (mknode "w:b" [] ()) $ inlinesToOpenXML opts lst
inlineToOpenXML' opts (Emph lst) =
  withTextProp (mknode "w:i" [] ()) $ inlinesToOpenXML opts lst
inlineToOpenXML' opts (Subscript lst) =
  withTextProp (mknode "w:vertAlign" [("w:val","subscript")] ())
  $ inlinesToOpenXML opts lst
inlineToOpenXML' opts (Superscript lst) =
  withTextProp (mknode "w:vertAlign" [("w:val","superscript")] ())
  $ inlinesToOpenXML opts lst
inlineToOpenXML' opts (SmallCaps lst) =
  withTextProp (mknode "w:smallCaps" [] ())
  $ inlinesToOpenXML opts lst
inlineToOpenXML' opts (Strikeout lst) =
  withTextProp (mknode "w:strike" [] ())
  $ inlinesToOpenXML opts lst
inlineToOpenXML' _ LineBreak = return [br]
inlineToOpenXML' _ il@(RawInline f str)
  | f == Format "openxml" = return [ x | Elem x <- parseXML str ]
  | otherwise             = do
      report $ InlineNotRendered il
      return []
inlineToOpenXML' opts (Quoted quoteType lst) =
  inlinesToOpenXML opts $ [Str open] ++ lst ++ [Str close]
    where (open, close) = case quoteType of
                            SingleQuote -> ("\x2018", "\x2019")
                            DoubleQuote -> ("\x201C", "\x201D")
inlineToOpenXML' opts (Math mathType str) = do
  when (mathType == DisplayMath) setFirstPara
  res <- (lift . lift) (convertMath writeOMML mathType str)
  case res of
       Right r -> return [r]
       Left il -> inlineToOpenXML' opts il
inlineToOpenXML' opts (Cite _ lst) = inlinesToOpenXML opts lst
inlineToOpenXML' opts (Code attrs str) = do
  let unhighlighted = intercalate [br] `fmap`
                       (mapM formattedString $ lines str)
      formatOpenXML _fmtOpts = intercalate [br] . map (map toHlTok)
      toHlTok (toktype,tok) = mknode "w:r" []
                               [ mknode "w:rPr" []
                                 [ rCustomStyle (show toktype) ]
                               , mknode "w:t" [("xml:space","preserve")] (T.unpack tok) ]
  withTextProp (rCustomStyle "VerbatimChar")
    $ if isNothing (writerHighlightStyle opts)
          then unhighlighted
          else case highlight (writerSyntaxMap opts)
                      formatOpenXML attrs str of
                    Right h  -> return h
                    Left msg -> do
                      unless (null msg) $ report $ CouldNotHighlight msg
                      unhighlighted
inlineToOpenXML' opts (Note bs) = do
  notes <- gets stFootnotes
  notenum <- (lift . lift) getUniqueId
  footnoteStyle <- rStyleM "Footnote Reference"
  let notemarker = mknode "w:r" []
                   [ mknode "w:rPr" [] footnoteStyle
                   , mknode "w:footnoteRef" [] () ]
  let notemarkerXml = RawInline (Format "openxml") $ ppElement notemarker
  let insertNoteRef (Plain ils : xs) = Plain (notemarkerXml : Space : ils) : xs
      insertNoteRef (Para ils  : xs) = Para  (notemarkerXml : Space : ils) : xs
      insertNoteRef xs               = Para [notemarkerXml] : xs

  contents <- local (\env -> env{ envListLevel = -1
                                , envParaProperties = []
                                , envTextProperties = [] })
              (withParaPropM (pStyleM "Footnote Text") $ blocksToOpenXML opts
                $ insertNoteRef bs)
  let newnote = mknode "w:footnote" [("w:id", notenum)] $ contents
  modify $ \s -> s{ stFootnotes = newnote : notes }
  return [ mknode "w:r" []
           [ mknode "w:rPr" [] footnoteStyle
           , mknode "w:footnoteReference" [("w:id", notenum)] () ] ]
-- internal link:
inlineToOpenXML' opts (Link _ txt ('#':xs,_)) = do
  contents <- withTextPropM (rStyleM "Hyperlink") $ inlinesToOpenXML opts txt
  return [ mknode "w:hyperlink" [("w:anchor",xs)] contents ]
-- external link:
inlineToOpenXML' opts (Link _ txt (src,_)) = do
  contents <- withTextPropM (rStyleM "Hyperlink") $ inlinesToOpenXML opts txt
  extlinks <- gets stExternalLinks
  id' <- case M.lookup src extlinks of
            Just i   -> return i
            Nothing  -> do
              i <- ("rId"++) `fmap` ((lift . lift) getUniqueId)
              modify $ \st -> st{ stExternalLinks =
                        M.insert src i extlinks }
              return i
  return [ mknode "w:hyperlink" [("r:id",id')] contents ]
inlineToOpenXML' opts (Image attr alt (src, title)) = do
  -- first, check to see if we've already done this image
  pageWidth <- asks envPrintWidth
  imgs <- gets stImages
  case M.lookup src imgs of
    Just (_,_,_,elt,_) -> return [elt]
    Nothing -> do
      catchError
        (do (img, mt) <- P.fetchItem (writerSourceURL opts) src
            ident <- ("rId"++) `fmap` ((lift . lift) getUniqueId)
            let (xpt,ypt) = desiredSizeInPoints opts attr
                   (either (const def) id (imageSize opts img))
            -- 12700 emu = 1 pt
            let (xemu,yemu) = fitToPage (xpt * 12700, ypt * 12700)
                                    (pageWidth * 12700)
            let cNvPicPr = mknode "pic:cNvPicPr" [] $
                             mknode "a:picLocks" [("noChangeArrowheads","1")
                                                 ,("noChangeAspect","1")] ()
            let nvPicPr  = mknode "pic:nvPicPr" []
                            [ mknode "pic:cNvPr"
                                [("descr",src),("id","0"),("name","Picture")] ()
                            , cNvPicPr ]
            let blipFill = mknode "pic:blipFill" []
                             [ mknode "a:blip" [("r:embed",ident)] ()
                             , mknode "a:stretch" [] $
                               mknode "a:fillRect" [] () ]
            let xfrm =    mknode "a:xfrm" []
                            [ mknode "a:off" [("x","0"),("y","0")] ()
                            , mknode "a:ext" [("cx",show xemu)
                                             ,("cy",show yemu)] () ]
            let prstGeom = mknode "a:prstGeom" [("prst","rect")] $
                             mknode "a:avLst" [] ()
            let ln =      mknode "a:ln" [("w","9525")]
                            [ mknode "a:noFill" [] ()
                            , mknode "a:headEnd" [] ()
                            , mknode "a:tailEnd" [] () ]
            let spPr =    mknode "pic:spPr" [("bwMode","auto")]
                            [xfrm, prstGeom, mknode "a:noFill" [] (), ln]
            let graphic = mknode "a:graphic" [] $
                            mknode "a:graphicData"
                              [("uri","http://schemas.openxmlformats.org/drawingml/2006/picture")]
                              [ mknode "pic:pic" []
                                [ nvPicPr
                                , blipFill
                                , spPr ] ]
            let imgElt = mknode "w:r" [] $
                 mknode "w:drawing" [] $
                   mknode "wp:inline" []
                    [ mknode "wp:extent" [("cx",show xemu),("cy",show yemu)] ()
                    , mknode "wp:effectExtent"
                         [("b","0"),("l","0"),("r","0"),("t","0")] ()
                    , mknode "wp:docPr" [("descr",stringify alt)
                                        ,("title", title)
                                        ,("id","1")
                                        ,("name","Picture")] ()
                    , graphic ]
            let imgext = case mt >>= extensionFromMimeType of
                              Just x    -> '.':x
                              Nothing   -> case imageType img of
                                                Just Png  -> ".png"
                                                Just Jpeg -> ".jpeg"
                                                Just Gif  -> ".gif"
                                                Just Pdf  -> ".pdf"
                                                Just Eps  -> ".eps"
                                                Just Svg  -> ".svg"
                                                Nothing   -> ""
            if null imgext
               then -- without an extension there is no rule for content type
                 inlinesToOpenXML opts alt -- return alt to avoid corrupted docx
               else do
                 let imgpath = "media/" ++ ident ++ imgext
                 let mbMimeType = mt <|> getMimeType imgpath
                 -- insert mime type to use in constructing [Content_Types].xml
                 modify $ \st -> st{ stImages =
                     M.insert src (ident, imgpath, mbMimeType, imgElt, img)
                             $ stImages st }
                 return [imgElt])
        (\e -> do
           report $ CouldNotFetchResource src (show e)
           -- emit alt text
           inlinesToOpenXML opts alt)

br :: Element
br = breakElement "textWrapping"

breakElement :: String -> Element
breakElement kind = mknode "w:r" [] [mknode "w:br" [("w:type",kind)] () ]

-- Word will insert these footnotes into the settings.xml file
-- (whether or not they're visible in the document). If they're in the
-- file, but not in the footnotes.xml file, it will produce
-- problems. So we want to make sure we insert them into our document.
defaultFootnotes :: [Element]
defaultFootnotes = [ mknode "w:footnote"
                     [("w:type", "separator"), ("w:id", "-1")] $
                     [ mknode "w:p" [] $
                       [mknode "w:r" [] $
                        [ mknode "w:separator" [] ()]]]
                   , mknode "w:footnote"
                     [("w:type", "continuationSeparator"), ("w:id", "0")] $
                     [ mknode "w:p" [] $
                       [ mknode "w:r" [] $
                         [ mknode "w:continuationSeparator" [] ()]]]]

parseXml :: (PandocMonad m) => Archive -> Archive -> String -> m Element
parseXml refArchive distArchive relpath =
  case findEntryByPath relpath refArchive `mplus`
         findEntryByPath relpath distArchive of
            Nothing -> fail $ relpath ++ " missing in reference docx"
            Just e  -> case parseXMLDoc . UTF8.toStringLazy . fromEntry $ e of
                       Nothing -> fail $ relpath ++ " corrupt in reference docx"
                       Just d  -> return d

-- | Scales the image to fit the page
-- sizes are passed in emu
fitToPage :: (Double, Double) -> Integer -> (Integer, Integer)
fitToPage (x, y) pageWidth
  -- Fixes width to the page width and scales the height
  | x > fromIntegral pageWidth =
    (pageWidth, floor $ ((fromIntegral pageWidth) / x) * y)
  | otherwise = (floor x, floor y)

withDirection :: PandocMonad m => WS m a -> WS m a
withDirection x = do
  isRTL <- asks envRTL
  paraProps <- asks envParaProperties
  textProps <- asks envTextProperties
  -- We want to clean all bidirection (bidi) and right-to-left (rtl)
  -- properties from the props first. This is because we don't want
  -- them to stack up.
  let paraProps' = filter (\e -> (qName . elName) e /= "bidi") paraProps
      textProps' = filter (\e -> (qName . elName) e /= "rtl") textProps
  if isRTL
    -- if we are going right-to-left, we (re?)add the properties.
    then flip local x $
         \env -> env { envParaProperties = (mknode "w:bidi" [] ()) : paraProps'
                     , envTextProperties = (mknode "w:rtl" [] ()) : textProps'
                     }
    else flip local x $ \env -> env { envParaProperties = paraProps'
                                    , envTextProperties = textProps'
                                    }