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
|
{-# LANGUAGE OverloadedStrings #-}
{- |
Module : Text.Pandoc.Writers.OOXML
Copyright : Copyright (C) 2012-2021 John MacFarlane
License : GNU GPL, version 2 or above
Maintainer : John MacFarlane <jgm@berkeley.edu>
Stability : alpha
Portability : portable
Functions common to OOXML writers (Docx and Powerpoint)
-}
module Text.Pandoc.Writers.OOXML ( mknode
, mktnode
, nodename
, toLazy
, renderXml
, parseXml
, elemToNameSpaces
, elemName
, isElem
, NameSpaces
, fitToPage
) where
import Codec.Archive.Zip
import Control.Monad.Reader
import Control.Monad.Except (throwError)
import Text.Pandoc.Error
import qualified Data.ByteString as B
import qualified Data.ByteString.Lazy as BL
import Data.Maybe (mapMaybe)
import qualified Data.Text as T
import Data.Text (Text)
import Text.Pandoc.Class.PandocMonad (PandocMonad)
import qualified Text.Pandoc.UTF8 as UTF8
import Text.Pandoc.XML.Light
mknode :: Node t => Text -> [(Text,Text)] -> t -> Element
mknode s attrs =
add_attrs (map (\(k,v) -> Attr (nodename k) v) attrs) . node (nodename s)
mktnode :: Text -> [(Text,Text)] -> T.Text -> Element
mktnode s attrs = mknode s attrs
nodename :: Text -> QName
nodename s = QName{ qName = name, qURI = Nothing, qPrefix = prefix }
where (name, prefix) = case T.break (==':') s of
(xs,ys) -> case T.uncons ys of
Nothing -> (xs, Nothing)
Just (_,zs) -> (zs, Just xs)
toLazy :: B.ByteString -> BL.ByteString
toLazy = BL.fromChunks . (:[])
renderXml :: Element -> BL.ByteString
renderXml elt = BL.fromStrict (UTF8.fromText (showTopElement elt))
parseXml :: PandocMonad m => Archive -> Archive -> String -> m Element
parseXml refArchive distArchive relpath =
case findEntryByPath relpath refArchive `mplus`
findEntryByPath relpath distArchive of
Nothing -> throwError $ PandocSomeError $
T.pack relpath <> " missing in reference file"
Just e -> case parseXMLElement . UTF8.toTextLazy . fromEntry $ e of
Left msg ->
throwError $ PandocXMLError (T.pack relpath) msg
Right d -> return d
-- Copied from Util
attrToNSPair :: Attr -> Maybe (Text, Text)
attrToNSPair (Attr (QName s _ (Just "xmlns")) val) = Just (s, val)
attrToNSPair _ = Nothing
elemToNameSpaces :: Element -> NameSpaces
elemToNameSpaces = mapMaybe attrToNSPair . elAttribs
elemName :: NameSpaces -> Text -> Text -> QName
elemName ns prefix name =
QName name (lookup prefix ns) (if T.null prefix then Nothing else Just prefix)
isElem :: NameSpaces -> Text -> Text -> Element -> Bool
isElem ns prefix name element =
let ns' = ns ++ elemToNameSpaces element
in qName (elName element) == name &&
qURI (elName element) == lookup prefix ns'
type NameSpaces = [(Text, Text)]
-- | 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)
|
