diff options
Diffstat (limited to 'src/Text/Pandoc/Readers/Markdown.hs')
| -rw-r--r-- | src/Text/Pandoc/Readers/Markdown.hs | 123 |
1 files changed, 58 insertions, 65 deletions
diff --git a/src/Text/Pandoc/Readers/Markdown.hs b/src/Text/Pandoc/Readers/Markdown.hs index 33d1a9620..0ea7f9ac5 100644 --- a/src/Text/Pandoc/Readers/Markdown.hs +++ b/src/Text/Pandoc/Readers/Markdown.hs @@ -60,6 +60,8 @@ import System.FilePath (takeExtension, addExtension) import Text.HTML.TagSoup import Text.HTML.TagSoup.Match (tagOpen) import qualified Data.Set as Set +import Text.Printf (printf) +import Debug.Trace (trace) type MarkdownParser = Parser [Char] ParserState @@ -215,10 +217,10 @@ pandocTitleBlock = try $ do author' <- author date' <- date return $ - ( if B.isNull title' then id else B.setMeta "title" title' - . if null author' then id else B.setMeta "author" author' - . if B.isNull date' then id else B.setMeta "date" date' ) - nullMeta + (if B.isNull title' then id else B.setMeta "title" title') + . (if null author' then id else B.setMeta "author" author') + . (if B.isNull date' then id else B.setMeta "date" date') + $ nullMeta updateState $ \st -> st{ stateMeta' = stateMeta' st <> meta' } yamlMetaBlock :: MarkdownParser (F Blocks) @@ -354,7 +356,7 @@ referenceKey = try $ do tit <- option "" referenceTitle -- currently we just ignore MMD-style link/image attributes _kvs <- option [] $ guardEnabled Ext_link_attributes - >> many (spnl >> keyValAttr) + >> many (try $ spnl >> keyValAttr) blanklines let target = (escapeURI $ trimr src, tit) st <- getState @@ -440,7 +442,10 @@ parseBlocks :: MarkdownParser (F Blocks) parseBlocks = mconcat <$> manyTill block eof block :: MarkdownParser (F Blocks) -block = choice [ mempty <$ blanklines +block = do + tr <- getOption readerTrace + pos <- getPosition + res <- choice [ mempty <$ blanklines , codeBlockFenced , yamlMetaBlock , guardEnabled Ext_latex_macros *> (macro >>= return . return) @@ -465,6 +470,11 @@ block = choice [ mempty <$ blanklines , para , plain ] <?> "block" + when tr $ do + st <- getState + trace (printf "line %d: %s" (sourceLine pos) + (take 60 $ show $ B.toList $ runF res st)) (return ()) + return res -- -- header blocks @@ -730,9 +740,14 @@ listStart = bulletListStart <|> (anyOrderedListStart >> return ()) listLine :: MarkdownParser String listLine = try $ do notFollowedBy' (do indentSpaces - many (spaceChar) + many spaceChar listStart) - chunks <- manyTill (liftM snd (htmlTag isCommentTag) <|> count 1 anyChar) newline + notFollowedBy' $ htmlTag (~== TagClose "div") + chunks <- manyTill + ( many1 (satisfy $ \c -> c /= '\n' && c /= '<') + <|> liftM snd (htmlTag isCommentTag) + <|> count 1 anyChar + ) newline return $ concat chunks -- parse raw text for one list item, excluding start marker and continuations @@ -759,6 +774,7 @@ listContinuationLine :: MarkdownParser String listContinuationLine = try $ do notFollowedBy blankline notFollowedBy' listStart + notFollowedBy' $ htmlTag (~== TagClose "div") optional indentSpaces result <- anyLine return $ result ++ "\n" @@ -783,8 +799,8 @@ listItem start = try $ do orderedList :: MarkdownParser (F Blocks) orderedList = try $ do (start, style, delim) <- lookAhead anyOrderedListStart - unless ((style == DefaultStyle || style == Decimal || style == Example) && - (delim == DefaultDelim || delim == Period)) $ + unless (style `elem` [DefaultStyle, Decimal, Example] && + delim `elem` [DefaultDelim, Period]) $ guardEnabled Ext_fancy_lists when (style == Example) $ guardEnabled Ext_example_lists items <- fmap sequence $ many1 $ listItem @@ -896,7 +912,9 @@ plain = fmap B.plain . trimInlinesF . mconcat <$> many1 inline -- htmlElement :: MarkdownParser String -htmlElement = strictHtmlBlock <|> liftM snd (htmlTag isBlockTag) +htmlElement = rawVerbatimBlock + <|> strictHtmlBlock + <|> liftM snd (htmlTag isBlockTag) htmlBlock :: MarkdownParser (F Blocks) htmlBlock = do @@ -917,8 +935,8 @@ strictHtmlBlock = htmlInBalanced (not . isInlineTag) rawVerbatimBlock :: MarkdownParser String rawVerbatimBlock = try $ do - (TagOpen tag _, open) <- htmlTag (tagOpen (\t -> - t == "pre" || t == "style" || t == "script") + (TagOpen tag _, open) <- htmlTag (tagOpen (flip elem + ["pre", "style", "script"]) (const True)) contents <- manyTill anyChar (htmlTag (~== TagClose tag)) return $ open ++ contents ++ renderTags [TagClose tag] @@ -936,6 +954,8 @@ rawHtmlBlocks = do htmlBlocks <- many1 $ try $ do s <- rawVerbatimBlock <|> try ( do (t,raw) <- htmlTag isBlockTag + guard $ t ~/= TagOpen "div" [] && + t ~/= TagClose "div" exts <- getOption readerExtensions -- if open tag, need markdown="1" if -- markdown_attributes extension is set @@ -1118,12 +1138,12 @@ multilineTableHeader headless = try $ do then liftM (map (:[]) . tail . splitStringByIndices (init indices)) $ lookAhead anyLine else return $ transpose $ map - (\ln -> tail $ splitStringByIndices (init indices) ln) + (tail . splitStringByIndices (init indices)) rawContent let aligns = zipWith alignType rawHeadsList lengths let rawHeads = if headless then replicate (length dashes) "" - else map unwords rawHeadsList + else map (unlines . map trim) rawHeadsList heads <- fmap sequence $ mapM (parseFromString (mconcat <$> many plain)) $ map trim rawHeads @@ -1180,7 +1200,7 @@ gridTableHeader headless = try $ do -- RST does not have a notion of alignments let rawHeads = if headless then replicate (length dashes) "" - else map unwords $ transpose + else map (unlines . map trim) $ transpose $ map (gridTableSplitLine indices) rawContent heads <- fmap sequence $ mapM (parseFromString parseBlocks . trim) rawHeads return (heads, aligns, indices) @@ -1366,7 +1386,7 @@ ltSign :: MarkdownParser (F Inlines) ltSign = do guardDisabled Ext_raw_html <|> guardDisabled Ext_markdown_in_html_blocks - <|> (notFollowedBy' rawHtmlBlocks >> return ()) + <|> (notFollowedBy' (htmlTag isBlockTag) >> return ()) char '<' return $ return $ B.str "<" @@ -1406,39 +1426,6 @@ math :: MarkdownParser (F Inlines) math = (return . B.displayMath <$> (mathDisplay >>= applyMacros')) <|> (return . B.math <$> (mathInline >>= applyMacros')) -mathDisplay :: MarkdownParser String -mathDisplay = - (guardEnabled Ext_tex_math_dollars >> mathDisplayWith "$$" "$$") - <|> (guardEnabled Ext_tex_math_single_backslash >> - mathDisplayWith "\\[" "\\]") - <|> (guardEnabled Ext_tex_math_double_backslash >> - mathDisplayWith "\\\\[" "\\\\]") - -mathDisplayWith :: String -> String -> MarkdownParser String -mathDisplayWith op cl = try $ do - string op - many1Till (noneOf "\n" <|> (newline >>~ notFollowedBy' blankline)) (try $ string cl) - -mathInline :: MarkdownParser String -mathInline = - (guardEnabled Ext_tex_math_dollars >> mathInlineWith "$" "$") - <|> (guardEnabled Ext_tex_math_single_backslash >> - mathInlineWith "\\(" "\\)") - <|> (guardEnabled Ext_tex_math_double_backslash >> - mathInlineWith "\\\\(" "\\\\)") - -mathInlineWith :: String -> String -> MarkdownParser String -mathInlineWith op cl = try $ do - string op - notFollowedBy space - words' <- many1Till (count 1 (noneOf "\n\\") - <|> (char '\\' >> anyChar >>= \c -> return ['\\',c]) - <|> count 1 newline <* notFollowedBy' blankline - *> return " ") - (try $ string cl) - notFollowedBy digit -- to prevent capture of $5 - return $ concat words' - -- Parses material enclosed in *s, **s, _s, or __s. -- Designed to avoid backtracking. enclosure :: Char @@ -1565,16 +1552,14 @@ endline :: MarkdownParser (F Inlines) endline = try $ do newline notFollowedBy blankline + -- parse potential list-starts differently if in a list: + st <- getState + when (stateParserContext st == ListItemState) $ notFollowedBy listStart guardDisabled Ext_lists_without_preceding_blankline <|> notFollowedBy listStart guardEnabled Ext_blank_before_blockquote <|> notFollowedBy emailBlockQuoteStart guardEnabled Ext_blank_before_header <|> notFollowedBy (char '#') -- atx header guardEnabled Ext_backtick_code_blocks >> notFollowedBy (() <$ (lookAhead (char '`') >> codeBlockFenced)) - -- parse potential list-starts differently if in a list: - st <- getState - when (stateParserContext st == ListItemState) $ do - notFollowedBy' bulletListStart - notFollowedBy' anyOrderedListStart (guardEnabled Ext_hard_line_breaks >> return (return B.linebreak)) <|> (guardEnabled Ext_ignore_line_breaks >> return mempty) <|> (return $ return B.space) @@ -1747,7 +1732,7 @@ spanHtml = try $ do guardEnabled Ext_markdown_in_html_blocks (TagOpen _ attrs, _) <- htmlTag (~== TagOpen "span" []) contents <- mconcat <$> manyTill inline (htmlTag (~== TagClose "span")) - let ident = maybe "" id $ lookup "id" attrs + let ident = fromMaybe "" $ lookup "id" attrs let classes = maybe [] words $ lookup "class" attrs let keyvals = [(k,v) | (k,v) <- attrs, k /= "id" && k /= "class"] return $ B.spanWith (ident, classes, keyvals) <$> contents @@ -1755,12 +1740,19 @@ spanHtml = try $ do divHtml :: MarkdownParser (F Blocks) divHtml = try $ do guardEnabled Ext_markdown_in_html_blocks - (TagOpen _ attrs, _) <- htmlTag (~== TagOpen "div" []) - contents <- mconcat <$> manyTill block (htmlTag (~== TagClose "div")) - let ident = maybe "" id $ lookup "id" attrs - let classes = maybe [] words $ lookup "class" attrs - let keyvals = [(k,v) | (k,v) <- attrs, k /= "id" && k /= "class"] - return $ B.divWith (ident, classes, keyvals) <$> contents + (TagOpen _ attrs, rawtag) <- htmlTag (~== TagOpen "div" []) + bls <- option "" (blankline >> option "" blanklines) + contents <- mconcat <$> + many (notFollowedBy' (htmlTag (~== TagClose "div")) >> block) + closed <- option False (True <$ htmlTag (~== TagClose "div")) + if closed + then do + let ident = fromMaybe "" $ lookup "id" attrs + let classes = maybe [] words $ lookup "class" attrs + let keyvals = [(k,v) | (k,v) <- attrs, k /= "id" && k /= "class"] + return $ B.divWith (ident, classes, keyvals) <$> contents + else -- avoid backtracing + return $ return (B.rawBlock "html" (rawtag <> bls)) <> contents rawHtmlInline :: MarkdownParser (F Inlines) rawHtmlInline = do @@ -1836,9 +1828,10 @@ citeKey = try $ do guard $ lastStrPos /= Just pos suppress_author <- option False (char '-' >> return True) char '@' - first <- letter - let internal p = try $ p >>~ lookAhead (letter <|> digit) - rest <- many $ letter <|> digit <|> internal (oneOf ":.#$%&-_+?<>~/") + first <- letter <|> char '_' + let regchar = satisfy (\c -> isAlphaNum c || c == '_') + let internal p = try $ p >>~ lookAhead regchar + rest <- many $ regchar <|> internal (oneOf ":.#$%&-+?<>~/") let key = first:rest return (suppress_author, key) |