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
|
{-# LANGUAGE NoImplicitPrelude #-}
{-# LANGUAGE PatternGuards #-}
{- |
Module : Text.Pandoc.Reader.Odt
Copyright : Copyright (C) 2015 Martin Linnemann
License : GNU GPL, version 2 or above
Maintainer : Martin Linnemann <theCodingMarlin@googlemail.com>
Stability : alpha
Portability : portable
Entry point to the odt reader.
-}
module Text.Pandoc.Readers.Odt ( readOdt ) where
import Prelude
import Codec.Archive.Zip
import qualified Text.XML.Light as XML
import qualified Data.ByteString.Lazy as B
import System.FilePath
import Control.Monad.Except (throwError)
import Text.Pandoc.Class (PandocMonad)
import qualified Text.Pandoc.Class as P
import Text.Pandoc.Definition
import Text.Pandoc.Error
import Text.Pandoc.MediaBag
import Text.Pandoc.Options
import qualified Text.Pandoc.UTF8 as UTF8
import Text.Pandoc.Readers.Odt.ContentReader
import Text.Pandoc.Readers.Odt.StyleReader
import Text.Pandoc.Readers.Odt.Generic.Fallible
import Text.Pandoc.Readers.Odt.Generic.XMLConverter
import Text.Pandoc.Shared (filteredFilesFromArchive)
readOdt :: PandocMonad m
=> ReaderOptions
-> B.ByteString
-> m Pandoc
readOdt opts bytes = case readOdt' opts bytes of
Right (doc, mb) -> do
P.setMediaBag mb
return doc
Left e -> throwError e
--
readOdt' :: ReaderOptions
-> B.ByteString
-> Either PandocError (Pandoc, MediaBag)
readOdt' _ bytes = bytesToOdt bytes-- of
-- Right (pandoc, mediaBag) -> Right (pandoc , mediaBag)
-- Left err -> Left err
--
bytesToOdt :: B.ByteString -> Either PandocError (Pandoc, MediaBag)
bytesToOdt bytes = case toArchiveOrFail bytes of
Right archive -> archiveToOdt archive
Left _ -> Left $ PandocParseError "Couldn't parse odt file."
--
archiveToOdt :: Archive -> Either PandocError (Pandoc, MediaBag)
archiveToOdt archive
| Just contentEntry <- findEntryByPath "content.xml" archive
, Just stylesEntry <- findEntryByPath "styles.xml" archive
, Just contentElem <- entryToXmlElem contentEntry
, Just stylesElem <- entryToXmlElem stylesEntry
, Right styles <- chooseMax (readStylesAt stylesElem )
(readStylesAt contentElem)
, media <- filteredFilesFromArchive archive filePathIsOdtMedia
, startState <- readerState styles media
, Right pandocWithMedia <- runConverter' read_body
startState
contentElem
= Right pandocWithMedia
| otherwise
-- Not very detailed, but I don't think more information would be helpful
= Left $ PandocParseError "Couldn't parse odt file."
where
filePathIsOdtMedia :: FilePath -> Bool
filePathIsOdtMedia fp =
let (dir, name) = splitFileName fp
in (dir == "Pictures/") || (dir /= "./" && name == "content.xml")
--
entryToXmlElem :: Entry -> Maybe XML.Element
entryToXmlElem = XML.parseXMLDoc . UTF8.toStringLazy . fromEntry
|
