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-rw-r--r--src/Text/Pandoc/Writers/EPUB.hs22
1 files changed, 14 insertions, 8 deletions
diff --git a/src/Text/Pandoc/Writers/EPUB.hs b/src/Text/Pandoc/Writers/EPUB.hs
index 4ffff0054..5d3325ba9 100644
--- a/src/Text/Pandoc/Writers/EPUB.hs
+++ b/src/Text/Pandoc/Writers/EPUB.hs
@@ -60,6 +60,9 @@ import Text.Blaze.Html.Renderer.Utf8 (renderHtml)
data EPUBVersion = EPUB2 | EPUB3 deriving Eq
+-- TODO - make an option
+chapterHeaderLevel = 1
+
writeEPUB2, writeEPUB3 :: WriterOptions -- ^ Writer options
-> Pandoc -- ^ Document to convert
-> IO B.ByteString
@@ -136,19 +139,22 @@ writeEPUB version opts doc@(Pandoc meta _) = do
let reftable = correlateRefs blocks'
let blocks'' = replaceRefs reftable blocks'
- let addToChunk :: [[Block]] -> Block -> [[Block]]
- addToChunk (c:cs) (Header 1 xs) = [Header 1 xs] : c : cs
- addToChunk (c:cs) x = (c ++ [x]) : cs
- addToChunk [] x = [[x]]
+ let isChapterHeader (Header n _) = n <= chapterHeaderLevel
+ isChapterHeader _ = False
+
+ let toChunks :: [Block] -> [[Block]]
+ toChunks [] = []
+ toChunks (b:bs) = (b:xs) : toChunks ys
+ where (xs,ys) = break isChapterHeader bs
- let chunks = reverse $ foldl addToChunk [] blocks''
+ let chunks = toChunks blocks''
let chapToEntry :: Int -> [Block] -> Entry
chapToEntry num bs = mkEntry (showChapter num)
$ renderHtml
$ writeHtml opts'
$ case bs of
- (Header 1 xs : _) -> Pandoc (Meta xs [] []) bs
+ (Header _ xs : _) -> Pandoc (Meta xs [] []) bs
_ -> Pandoc (Meta [] [] []) bs
let chapterEntries = zipWith chapToEntry [1..] chunks
@@ -445,13 +451,13 @@ correlateRefs bs = identTable $ execState (mapM_ go bs)
, identTable = [] }
where go :: Block -> State IdentState ()
go (Header n ils) = do
- when (n == 1) $
+ when (n <= chapterHeaderLevel) $
modify $ \s -> s{ chapterNumber = chapterNumber s + 1
, chapterIdents = [] }
st <- get
let runningid = uniqueIdent ils (runningIdents st)
let chapterid = showChapter (chapterNumber st) ++
- if n == 1
+ if n <= chapterHeaderLevel
then ""
else '#' : uniqueIdent ils (chapterIdents st)
modify $ \s -> s{ runningIdents = runningid : runningIdents st