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| author | Alexander Krotov <ilabdsf@gmail.com> | 2019-05-11 05:15:19 +0300 |
|---|---|---|
| committer | Alexander <ilabdsf@gmail.com> | 2019-05-11 12:10:20 +0000 |
| commit | c1d9cf7daf02b284907584960c8e73103416afd2 (patch) | |
| tree | 314463388cccf4a940685a132888402d9bb67ac2 /src/Text/Pandoc | |
| parent | e9343b96bc043828595ff9b68aacf7f7005fc54a (diff) | |
| download | pandoc-c1d9cf7daf02b284907584960c8e73103416afd2.tar.gz | |
FB2 reader: parse notes
Closes #5493
Diffstat (limited to 'src/Text/Pandoc')
| -rw-r--r-- | src/Text/Pandoc/Readers/FB2.hs | 54 |
1 files changed, 51 insertions, 3 deletions
diff --git a/src/Text/Pandoc/Readers/FB2.hs b/src/Text/Pandoc/Readers/FB2.hs index d22dca8b0..5efcc2e5b 100644 --- a/src/Text/Pandoc/Readers/FB2.hs +++ b/src/Text/Pandoc/Readers/FB2.hs @@ -31,6 +31,7 @@ import Data.Char (isSpace, toUpper) import Data.Functor import Data.List (dropWhileEnd, intersperse) import Data.List.Split (splitOn) +import qualified Data.Map as M import Data.Text (Text) import Data.Default import Data.Maybe @@ -48,12 +49,14 @@ type FB2 m = StateT FB2State m data FB2State = FB2State{ fb2SectionLevel :: Int , fb2Meta :: Meta , fb2Authors :: [String] + , fb2Notes :: M.Map String Blocks } deriving Show instance Default FB2State where def = FB2State{ fb2SectionLevel = 1 , fb2Meta = mempty , fb2Authors = [] + , fb2Notes = M.empty } instance HasMeta FB2State where @@ -107,16 +110,56 @@ parseSubtitle e = headerWith ("", ["unnumbered"], []) <$> gets fb2SectionLevel < parseRootElement :: PandocMonad m => Element -> FB2 m Blocks parseRootElement e = case qName $ elName e of - "FictionBook" -> mconcat <$> mapM parseFictionBookChild (elChildren e) + "FictionBook" -> do + -- Parse notes before parsing the rest of the content. + case filterChild isNotesBody e of + Nothing -> pure () + Just notesBody -> parseNotesBody notesBody + -- Parse metadata and content + mconcat <$> mapM parseFictionBookChild (elChildren e) name -> report (UnexpectedXmlElement name "root") $> mempty +-- | Parse notes +parseNotesBody :: PandocMonad m => Element -> FB2 m () +parseNotesBody e = mempty <$ mapM parseNotesBodyChild (elChildren e) + +-- | Parse a child of @\<body name="notes">@ element. +parseNotesBodyChild :: PandocMonad m => Element -> FB2 m () +parseNotesBodyChild e = + case qName $ elName e of + "section" -> parseNote e + _ -> pure () + +isNotesBody :: Element -> Bool +isNotesBody e = + qName (elName e) == "body" && + findAttr (unqual "name") e == Just "notes" + +parseNote :: PandocMonad m => Element -> FB2 m () +parseNote e = + case findAttr (unqual "id") e of + Nothing -> pure () + Just sectionId -> do + content <- mconcat <$> mapM parseSectionChild (dropTitle $ elChildren e) + oldNotes <- gets fb2Notes + modify $ \s -> s { fb2Notes = M.insert ("#" ++ sectionId) content oldNotes } + pure () + where + isTitle x = qName (elName x) == "title" + dropTitle (x:xs) = if isTitle x + then xs -- Drop note section <title> if present + else (x:xs) + dropTitle [] = [] + -- | Parse a child of @\<FictionBook>@ element. parseFictionBookChild :: PandocMonad m => Element -> FB2 m Blocks parseFictionBookChild e = case qName $ elName e of "stylesheet" -> pure mempty -- stylesheet is ignored "description" -> mempty <$ mapM_ parseDescriptionChild (elChildren e) - "body" -> mconcat <$> mapM parseBodyChild (elChildren e) + "body" -> if isNotesBody e + then pure mempty + else mconcat <$> mapM parseBodyChild (elChildren e) "binary" -> mempty <$ parseBinaryElement e name -> report (UnexpectedXmlElement name "FictionBook") $> mempty @@ -333,8 +376,13 @@ parseNamedStyleChild x = parseInline x parseLinkType :: PandocMonad m => Element -> FB2 m Inlines parseLinkType e = do content <- mconcat <$> mapM parseStyleLinkType (elContent e) + notes <- gets fb2Notes case findAttr (QName "href" (Just "http://www.w3.org/1999/xlink") Nothing) e of - Just href -> pure $ link href "" content + Just href -> case findAttr (QName "type" Nothing Nothing) e of + Just "note" -> case M.lookup href notes of + Nothing -> pure $ link href "" content + Just contents -> pure $ note contents + _ -> pure $ link href "" content Nothing -> throwError $ PandocParseError "Couldn't parse FB2 file: link without required href." -- | Parse @styleLinkType@ |