diff options
Diffstat (limited to 'src/Text/Pandoc/Writers/EPUB.hs')
| -rw-r--r-- | src/Text/Pandoc/Writers/EPUB.hs | 67 |
1 files changed, 47 insertions, 20 deletions
diff --git a/src/Text/Pandoc/Writers/EPUB.hs b/src/Text/Pandoc/Writers/EPUB.hs index 4ec68879f..2aab7701f 100644 --- a/src/Text/Pandoc/Writers/EPUB.hs +++ b/src/Text/Pandoc/Writers/EPUB.hs @@ -1,4 +1,4 @@ -{-# LANGUAGE PatternGuards, CPP, ScopedTypeVariables #-} +{-# LANGUAGE PatternGuards, CPP, ScopedTypeVariables, ViewPatterns #-} {- Copyright (C) 2010-2014 John MacFarlane <jgm@berkeley.edu> @@ -29,7 +29,7 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Conversion of 'Pandoc' documents to EPUB. -} module Text.Pandoc.Writers.EPUB ( writeEPUB ) where -import Data.IORef +import Data.IORef ( IORef, newIORef, readIORef, modifyIORef ) import qualified Data.Map as M import Data.Maybe ( fromMaybe ) import Data.List ( isPrefixOf, isInfixOf, intercalate ) @@ -40,27 +40,35 @@ import qualified Data.ByteString.Lazy as B import qualified Data.ByteString.Lazy.Char8 as B8 import qualified Text.Pandoc.UTF8 as UTF8 import Text.Pandoc.SelfContained ( makeSelfContained ) -import Codec.Archive.Zip +import Codec.Archive.Zip ( emptyArchive, addEntryToArchive, eRelativePath, fromEntry , Entry, toEntry, fromArchive) import Control.Applicative ((<$>)) -import Data.Time.Clock.POSIX -import Data.Time -import System.Locale -import Text.Pandoc.Shared hiding ( Element ) -import qualified Text.Pandoc.Shared as Shared +import Data.Time.Clock.POSIX ( getPOSIXTime ) +import Data.Time (getCurrentTime,UTCTime, formatTime) +import System.Locale ( defaultTimeLocale ) +import Text.Pandoc.Shared ( trimr, renderTags', safeRead, uniqueIdent, trim + , normalizeDate, readDataFile, stringify, warn + , hierarchicalize, fetchItem' ) +import qualified Text.Pandoc.Shared as S (Element(..)) import Text.Pandoc.Builder (fromList, setMeta) -import Text.Pandoc.Options +import Text.Pandoc.Options ( WriterOptions(..) + , HTMLMathMethod(..) + , EPUBVersion(..) + , ObfuscationMethod(NoObfuscation) ) import Text.Pandoc.Definition -import Text.Pandoc.Walk -import Control.Monad.State -import Text.XML.Light hiding (ppTopElement) -import Text.Pandoc.UUID -import Text.Pandoc.Writers.HTML +import Text.Pandoc.Walk (walk, walkM) +import Control.Monad.State (modify, get, execState, State, put, evalState) +import Control.Monad (foldM, when, mplus, liftM) +import Text.XML.Light ( unode, Element(..), unqual, Attr(..), add_attrs + , strContent, lookupAttr, Node(..), QName(..), parseXML + , onlyElems, node, ppElement) +import Text.Pandoc.UUID (getRandomUUID) +import Text.Pandoc.Writers.HTML (writeHtmlString, writeHtml) import Data.Char ( toLower, isDigit, isAlphaNum ) import Network.URI ( unEscapeString ) import Text.Pandoc.MIME (getMimeType) import qualified Control.Exception as E import Text.Blaze.Html.Renderer.Utf8 (renderHtml) -import Text.HTML.TagSoup +import Text.HTML.TagSoup (Tag(TagOpen), fromAttrib, parseTags) -- A Chapter includes a list of blocks and maybe a section -- number offset. Note, some chapters are unnumbered. The section @@ -86,6 +94,7 @@ data EPUBMetadata = EPUBMetadata{ , epubRights :: Maybe String , epubCoverImage :: Maybe String , epubStylesheet :: Maybe Stylesheet + , epubPageDirection :: ProgressionDirection } deriving Show data Stylesheet = StylesheetPath FilePath @@ -114,6 +123,8 @@ data Title = Title{ , titleType :: Maybe String } deriving Show +data ProgressionDirection = LTR | RTL | Default deriving Show + dcName :: String -> QName dcName n = QName n Nothing (Just "dc") @@ -288,6 +299,7 @@ metadataFromMeta opts meta = EPUBMetadata{ , epubRights = rights , epubCoverImage = coverImage , epubStylesheet = stylesheet + , epubPageDirection = pageDirection } where identifiers = getIdentifier meta titles = getTitle meta @@ -310,6 +322,14 @@ metadataFromMeta opts meta = EPUBMetadata{ stylesheet = (StylesheetContents <$> writerEpubStylesheet opts) `mplus` ((StylesheetPath . metaValueToString) <$> lookupMeta "stylesheet" meta) + pageDirection = maybe Default stringToPageDirection + (lookupMeta "page-progression-direction" meta) + stringToPageDirection (metaValueToString -> s) = + case s of + "ltr" -> LTR + "rtl" -> RTL + _ -> Default + -- | Produce an EPUB file from a Pandoc document. writeEPUB :: WriterOptions -- ^ Writer options @@ -374,6 +394,12 @@ writeEPUB opts doc@(Pandoc meta _) = do let mkFontEntry f = mkEntry (takeFileName f) `fmap` B.readFile f fontEntries <- mapM mkFontEntry $ writerEpubFonts opts' + -- set page progression direction + let progressionDirection = case epubPageDirection metadata of + LTR -> "ltr" + RTL -> "rtl" + Default -> "default" + -- body pages -- add level 1 header to beginning if none there @@ -493,7 +519,8 @@ writeEPUB opts doc@(Pandoc meta _) = do (pictureNode x)]) ++ map pictureNode picEntries ++ map fontNode fontEntries - , unode "spine" ! [("toc","ncx")] $ + , unode "spine" ! [("toc","ncx") + ,("page-progression-direction", progressionDirection)] $ case epubCoverImage metadata of Nothing -> [] Just _ -> [ unode "itemref" ! @@ -524,8 +551,8 @@ writeEPUB opts doc@(Pandoc meta _) = do let tocLevel = writerTOCDepth opts let navPointNode :: (Int -> String -> String -> [Element] -> Element) - -> Shared.Element -> State Int Element - navPointNode formatter (Sec _ nums (ident,_,_) ils children) = do + -> S.Element -> State Int Element + navPointNode formatter (S.Sec _ nums (ident,_,_) ils children) = do n <- get modify (+1) let showNums :: [Int] -> String @@ -537,12 +564,12 @@ writeEPUB opts doc@(Pandoc meta _) = do let src = case lookup ident reftable of Just x -> x Nothing -> error (ident ++ " not found in reftable") - let isSec (Sec lev _ _ _ _) = lev <= tocLevel + let isSec (S.Sec lev _ _ _ _) = lev <= tocLevel isSec _ = False let subsecs = filter isSec children subs <- mapM (navPointNode formatter) subsecs return $ formatter n tit src subs - navPointNode _ (Blk _) = error "navPointNode encountered Blk" + navPointNode _ (S.Blk _) = error "navPointNode encountered Blk" let navMapFormatter :: Int -> String -> String -> [Element] -> Element navMapFormatter n tit src subs = unode "navPoint" ! |