@@ -1,4 +1,4 @@
1−{-# LANGUAGE PatternGuards, CPP, ScopedTypeVariables #-}
1+{-# LANGUAGE PatternGuards, CPP, ScopedTypeVariables, ViewPatterns #-}
22{-
33Copyright (C) 2010-2014 John MacFarlane <jgm@berkeley.edu>
44
@@ -29,7 +29,7 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
2929Conversion of 'Pandoc' documents to EPUB.
3030-}
3131module Text.Pandoc.Writers.EPUB ( writeEPUB ) where
32−import Data.IORef
32+import Data.IORef ( IORef, newIORef, readIORef, modifyIORef )
3333import qualified Data.Map as M
3434import Data.Maybe ( fromMaybe )
3535import Data.List ( isPrefixOf, isInfixOf, intercalate )
@@ -40,27 +40,35 @@ import qualified Data.ByteString.Lazy as B
4040import qualified Data.ByteString.Lazy.Char8 as B8
4141import qualified Text.Pandoc.UTF8 as UTF8
4242import Text.Pandoc.SelfContained ( makeSelfContained )
43−import Codec.Archive.Zip
43+import Codec.Archive.Zip ( emptyArchive, addEntryToArchive, eRelativePath, fromEntry , Entry, toEntry, fromArchive)
4444import Control.Applicative ((<$>))
45−import Data.Time.Clock.POSIX
46−import Data.Time
47−import System.Locale
48−import Text.Pandoc.Shared hiding ( Element )
49−import qualified Text.Pandoc.Shared as Shared
45+import Data.Time.Clock.POSIX ( getPOSIXTime )
46+import Data.Time (getCurrentTime,UTCTime, formatTime)
47+import System.Locale ( defaultTimeLocale )
48+import Text.Pandoc.Shared ( trimr, renderTags', safeRead, uniqueIdent, trim
49+ , normalizeDate, readDataFile, stringify, warn
50+ , hierarchicalize, fetchItem' )
51+import qualified Text.Pandoc.Shared as S (Element(..))
5052import Text.Pandoc.Builder (fromList, setMeta)
51−import Text.Pandoc.Options
53+import Text.Pandoc.Options ( WriterOptions(..)
54+ , HTMLMathMethod(..)
55+ , EPUBVersion(..)
56+ , ObfuscationMethod(NoObfuscation) )
5257import Text.Pandoc.Definition
53−import Text.Pandoc.Walk
54−import Control.Monad.State
55−import Text.XML.Light hiding (ppTopElement)
56−import Text.Pandoc.UUID
57−import Text.Pandoc.Writers.HTML
58+import Text.Pandoc.Walk (walk, walkM)
59+import Control.Monad.State (modify, get, execState, State, put, evalState)
60+import Control.Monad (foldM, when, mplus, liftM)
61+import Text.XML.Light ( unode, Element(..), unqual, Attr(..), add_attrs
62+ , strContent, lookupAttr, Node(..), QName(..), parseXML
63+ , onlyElems, node, ppElement)
64+import Text.Pandoc.UUID (getRandomUUID)
65+import Text.Pandoc.Writers.HTML (writeHtmlString, writeHtml)
5866import Data.Char ( toLower, isDigit, isAlphaNum )
5967import Network.URI ( unEscapeString )
6068import Text.Pandoc.MIME (getMimeType)
6169import qualified Control.Exception as E
6270import Text.Blaze.Html.Renderer.Utf8 (renderHtml)
63−import Text.HTML.TagSoup
71+import Text.HTML.TagSoup (Tag(TagOpen), fromAttrib, parseTags)
6472
6573-- A Chapter includes a list of blocks and maybe a section
6674-- number offset. Note, some chapters are unnumbered. The section
@@ -86,6 +94,7 @@ data EPUBMetadata = EPUBMetadata{
8694 , epubRights :: Maybe String
8795 , epubCoverImage :: Maybe String
8896 , epubStylesheet :: Maybe Stylesheet
97+ , epubPageDirection :: ProgressionDirection
8998 } deriving Show
9099
91100data Stylesheet = StylesheetPath FilePath
@@ -114,6 +123,8 @@ data Title = Title{
114123 , titleType :: Maybe String
115124 } deriving Show
116125
126+data ProgressionDirection = LTR | RTL | Default deriving Show
127+
117128dcName :: String -> QName
118129dcName n = QName n Nothing (Just "dc")
119130
@@ -288,6 +299,7 @@ metadataFromMeta opts meta = EPUBMetadata{
288299 , epubRights = rights
289300 , epubCoverImage = coverImage
290301 , epubStylesheet = stylesheet
302+ , epubPageDirection = pageDirection
291303 }
292304 where identifiers = getIdentifier meta
293305 titles = getTitle meta
@@ -310,6 +322,14 @@ metadataFromMeta opts meta = EPUBMetadata{
310322 stylesheet = (StylesheetContents <$> writerEpubStylesheet opts) `mplus`
311323 ((StylesheetPath . metaValueToString) <$>
312324 lookupMeta "stylesheet" meta)
325+ pageDirection = maybe Default stringToPageDirection
326+ (lookupMeta "page-progression-direction" meta)
327+ stringToPageDirection (metaValueToString -> s) =
328+ case s of
329+ "ltr" -> LTR
330+ "rtl" -> RTL
331+ _ -> Default
332+
313333
314334-- | Produce an EPUB file from a Pandoc document.
315335writeEPUB :: WriterOptions -- ^ Writer options
@@ -374,6 +394,12 @@ writeEPUB opts doc@(Pandoc meta _) = do
374394 let mkFontEntry f = mkEntry (takeFileName f) `fmap` B.readFile f
375395 fontEntries <- mapM mkFontEntry $ writerEpubFonts opts'
376396
397+ -- set page progression direction
398+ let progressionDirection = case epubPageDirection metadata of
399+ LTR -> "ltr"
400+ RTL -> "rtl"
401+ Default -> "default"
402+
377403 -- body pages
378404
379405 -- add level 1 header to beginning if none there
@@ -493,7 +519,8 @@ writeEPUB opts doc@(Pandoc meta _) = do
493519 (pictureNode x)]) ++
494520 map pictureNode picEntries ++
495521 map fontNode fontEntries
496− , unode "spine" ! [("toc","ncx")] $
522+ , unode "spine" ! [("toc","ncx")
523+ ,("page-progression-direction", progressionDirection)] $
497524 case epubCoverImage metadata of
498525 Nothing -> []
499526 Just _ -> [ unode "itemref" !
@@ -524,8 +551,8 @@ writeEPUB opts doc@(Pandoc meta _) = do
524551 let tocLevel = writerTOCDepth opts
525552
526553 let navPointNode :: (Int -> String -> String -> [Element] -> Element)
527− -> Shared.Element -> State Int Element
528− navPointNode formatter (Sec _ nums (ident,_,_) ils children) = do
554+ -> S.Element -> State Int Element
555+ navPointNode formatter (S.Sec _ nums (ident,_,_) ils children) = do
529556 n <- get
530557 modify (+1)
531558 let showNums :: [Int] -> String
@@ -537,12 +564,12 @@ writeEPUB opts doc@(Pandoc meta _) = do
537564 let src = case lookup ident reftable of
538565 Just x -> x
539566 Nothing -> error (ident ++ " not found in reftable")
540− let isSec (Sec lev _ _ _ _) = lev <= tocLevel
567+ let isSec (S.Sec lev _ _ _ _) = lev <= tocLevel
541568 isSec _ = False
542569 let subsecs = filter isSec children
543570 subs <- mapM (navPointNode formatter) subsecs
544571 return $ formatter n tit src subs
545− navPointNode _ (Blk _) = error "navPointNode encountered Blk"
572+ navPointNode _ (S.Blk _) = error "navPointNode encountered Blk"
546573
547574 let navMapFormatter :: Int -> String -> String -> [Element] -> Element
548575 navMapFormatter n tit src subs = unode "navPoint" !