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
|
{-
Copyright (C) 2014-2017 Jesse Rosenthal <jrosenthal@jhu.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.Readers.Docx.Lists
Copyright : Copyright (C) 2014-2017 Jesse Rosenthal
License : GNU GPL, version 2 or above
Maintainer : Jesse Rosenthal <jrosenthal@jhu.edu>
Stability : alpha
Portability : portable
Functions for converting flat docx paragraphs into nested lists.
-}
module Text.Pandoc.Readers.Docx.Lists ( blocksToBullets
, blocksToDefinitions
, listParagraphDivs
) where
import Control.Monad
import Data.List
import Data.Maybe
import Text.Pandoc.Generic (bottomUp)
import Text.Pandoc.JSON
import Text.Pandoc.Shared (trim)
isListItem :: Block -> Bool
isListItem (Div (_, classes, _) _) | "list-item" `elem` classes = True
isListItem _ = False
getLevel :: Block -> Maybe Integer
getLevel (Div (_, _, kvs) _) = liftM read $ lookup "level" kvs
getLevel _ = Nothing
getLevelN :: Block -> Integer
getLevelN b = case getLevel b of
Just n -> n
Nothing -> -1
getNumId :: Block -> Maybe Integer
getNumId (Div (_, _, kvs) _) = liftM read $ lookup "num-id" kvs
getNumId _ = Nothing
getNumIdN :: Block -> Integer
getNumIdN b = case getNumId b of
Just n -> n
Nothing -> -1
getText :: Block -> Maybe String
getText (Div (_, _, kvs) _) = lookup "text" kvs
getText _ = Nothing
data ListType = Itemized | Enumerated ListAttributes
listStyleMap :: [(String, ListNumberStyle)]
listStyleMap = [("upperLetter", UpperAlpha),
("lowerLetter", LowerAlpha),
("upperRoman", UpperRoman),
("lowerRoman", LowerRoman),
("decimal", Decimal)]
listDelimMap :: [(String, ListNumberDelim)]
listDelimMap = [("%1)", OneParen),
("(%1)", TwoParens),
("%1.", Period)]
getListType :: Block -> Maybe ListType
getListType b@(Div (_, _, kvs) _) | isListItem b =
let
start = lookup "start" kvs
frmt = lookup "format" kvs
txt = lookup "text" kvs
in
case frmt of
Just "bullet" -> Just Itemized
Just f ->
case txt of
Just t -> Just $ Enumerated (
read (fromMaybe "1" start) :: Int,
fromMaybe DefaultStyle (lookup f listStyleMap),
fromMaybe DefaultDelim (lookup t listDelimMap))
Nothing -> Nothing
_ -> Nothing
getListType _ = Nothing
listParagraphDivs :: [String]
listParagraphDivs = ["ListParagraph"]
-- This is a first stab at going through and attaching meaning to list
-- paragraphs, without an item marker, following a list item. We
-- assume that these are paragraphs in the same item.
handleListParagraphs :: [Block] -> [Block]
handleListParagraphs [] = []
handleListParagraphs (
(Div attr1@(_, classes1, _) blks1) :
(Div (ident2, classes2, kvs2) blks2) :
blks
) | "list-item" `elem` classes1 &&
not ("list-item" `elem` classes2) &&
(not . null) (listParagraphDivs `intersect` classes2) =
-- We don't want to keep this indent.
let newDiv2 =
(Div (ident2, classes2, filter (\kv -> fst kv /= "indent") kvs2) blks2)
in
handleListParagraphs ((Div attr1 (blks1 ++ [newDiv2])) : blks)
handleListParagraphs (blk:blks) = blk : (handleListParagraphs blks)
separateBlocks' :: Block -> [[Block]] -> [[Block]]
separateBlocks' blk ([] : []) = [[blk]]
separateBlocks' b@(BulletList _) acc = (init acc) ++ [(last acc) ++ [b]]
separateBlocks' b@(OrderedList _ _) acc = (init acc) ++ [(last acc) ++ [b]]
-- The following is for the invisible bullet lists. This is how
-- pandoc-generated ooxml does multiparagraph item lists.
separateBlocks' b acc | liftM trim (getText b) == Just "" =
(init acc) ++ [(last acc) ++ [b]]
separateBlocks' b acc = acc ++ [[b]]
separateBlocks :: [Block] -> [[Block]]
separateBlocks blks = foldr separateBlocks' [[]] (reverse blks)
flatToBullets' :: Integer -> [Block] -> [Block]
flatToBullets' _ [] = []
flatToBullets' num xs@(b : elems)
| getLevelN b == num = b : (flatToBullets' num elems)
| otherwise =
let bNumId = getNumIdN b
bLevel = getLevelN b
(children, remaining) =
span
(\b' ->
((getLevelN b') > bLevel ||
((getLevelN b') == bLevel && (getNumIdN b') == bNumId)))
xs
in
case getListType b of
Just (Enumerated attr) ->
(OrderedList attr (separateBlocks $ flatToBullets' bLevel children)) :
(flatToBullets' num remaining)
_ ->
(BulletList (separateBlocks $ flatToBullets' bLevel children)) :
(flatToBullets' num remaining)
flatToBullets :: [Block] -> [Block]
flatToBullets elems = flatToBullets' (-1) elems
singleItemHeaderToHeader :: Block -> Block
singleItemHeaderToHeader (OrderedList _ [[h@(Header _ _ _)]]) = h
singleItemHeaderToHeader blk = blk
blocksToBullets :: [Block] -> [Block]
blocksToBullets blks =
map singleItemHeaderToHeader $
bottomUp removeListDivs $
flatToBullets $ (handleListParagraphs blks)
plainParaInlines :: Block -> [Inline]
plainParaInlines (Plain ils) = ils
plainParaInlines (Para ils) = ils
plainParaInlines _ = []
blocksToDefinitions' :: [([Inline], [[Block]])] -> [Block] -> [Block] -> [Block]
blocksToDefinitions' [] acc [] = reverse acc
blocksToDefinitions' defAcc acc [] =
reverse $ (DefinitionList (reverse defAcc)) : acc
blocksToDefinitions' defAcc acc
((Div (_, classes1, _) blks1) : (Div (ident2, classes2, kvs2) blks2) : blks)
| "DefinitionTerm" `elem` classes1 && "Definition" `elem` classes2 =
let remainingAttr2 = (ident2, delete "Definition" classes2, kvs2)
pair = case remainingAttr2 == ("", [], []) of
True -> (concatMap plainParaInlines blks1, [blks2])
False -> (concatMap plainParaInlines blks1, [[Div remainingAttr2 blks2]])
in
blocksToDefinitions' (pair : defAcc) acc blks
blocksToDefinitions' defAcc acc
((Div (ident2, classes2, kvs2) blks2) : blks)
| (not . null) defAcc && "Definition" `elem` classes2 =
let remainingAttr2 = (ident2, delete "Definition" classes2, kvs2)
defItems2 = case remainingAttr2 == ("", [], []) of
True -> blks2
False -> [Div remainingAttr2 blks2]
((defTerm, defItems):defs) = defAcc
defAcc' = case null defItems of
True -> (defTerm, [defItems2]) : defs
False -> (defTerm, init defItems ++ [last defItems ++ defItems2]) : defs
in
blocksToDefinitions' defAcc' acc blks
blocksToDefinitions' [] acc (b:blks) =
blocksToDefinitions' [] (b:acc) blks
blocksToDefinitions' defAcc acc (b:blks) =
blocksToDefinitions' [] (b : (DefinitionList (reverse defAcc)) : acc) blks
removeListDivs' :: Block -> [Block]
removeListDivs' (Div (ident, classes, kvs) blks)
| "list-item" `elem` classes =
case delete "list-item" classes of
[] -> blks
classes' -> [Div (ident, classes', kvs) $ blks]
removeListDivs' (Div (ident, classes, kvs) blks)
| not $ null $ listParagraphDivs `intersect` classes =
case classes \\ listParagraphDivs of
[] -> blks
classes' -> [Div (ident, classes', kvs) blks]
removeListDivs' blk = [blk]
removeListDivs :: [Block] -> [Block]
removeListDivs = concatMap removeListDivs'
blocksToDefinitions :: [Block] -> [Block]
blocksToDefinitions = blocksToDefinitions' [] []
|
