diff options
Diffstat (limited to 'src/Text/Pandoc/Readers')
| -rw-r--r-- | src/Text/Pandoc/Readers/Muse.hs | 170 |
1 files changed, 75 insertions, 95 deletions
diff --git a/src/Text/Pandoc/Readers/Muse.hs b/src/Text/Pandoc/Readers/Muse.hs index a749b87b8..9432ecc1c 100644 --- a/src/Text/Pandoc/Readers/Muse.hs +++ b/src/Text/Pandoc/Readers/Muse.hs @@ -180,38 +180,31 @@ someUntil p end = first <$> ((:) <$> p) <*> manyUntil p end -- ** HTML parsers openTag :: PandocMonad m => String -> MuseParser m [(String, String)] -openTag tag = try $ do - char '<' - string tag - manyTill attr (char '>') +openTag tag = try $ + char '<' *> string tag *> manyTill attr (char '>') where - attr = try $ do - many1 spaceChar - key <- many1 (noneOf "=\n") - string "=\"" - value <- manyTill (noneOf "\"") (char '"') - return (key, value) + attr = try $ (,) + <$ many1 spaceChar + <*> many1 (noneOf "=\n") + <* string "=\"" + <*> manyTill (noneOf "\"") (char '"') closeTag :: PandocMonad m => String -> MuseParser m () -closeTag tag = try $ string "</" >> string tag >> void (char '>') +closeTag tag = try $ string "</" *> string tag *> void (char '>') -- | Parse HTML tag, returning its attributes and literal contents. htmlElement :: PandocMonad m => String -- ^ Tag name -> MuseParser m (Attr, String) -htmlElement tag = try $ do - attr <- openTag tag - content <- manyTill anyChar $ closeTag tag - return (htmlAttrToPandoc attr, content) +htmlElement tag = try $ (,) + <$> (htmlAttrToPandoc <$> openTag tag) + <*> manyTill anyChar (closeTag tag) htmlBlock :: PandocMonad m => String -- ^ Tag name -> MuseParser m (Attr, String) -htmlBlock tag = try $ do - many spaceChar - res <- htmlElement tag - manyTill spaceChar eol - return res +htmlBlock tag = try $ + many spaceChar *> htmlElement tag <* manyTill spaceChar eol -- | Convert HTML attributes to Pandoc 'Attr' htmlAttrToPandoc :: [Attribute String] -> Attr @@ -229,7 +222,7 @@ parseHtmlContent tag = try $ do pos <- getPosition attr <- openTag tag manyTill spaceChar eol - content <- parseBlocksTill $ try $ count (sourceColumn pos - 1) spaceChar >> closeTag tag + content <- parseBlocksTill $ try $ count (sourceColumn pos - 1) spaceChar *> closeTag tag manyTill spaceChar eol -- closing tag must be followed by optional whitespace and newline return (htmlAttrToPandoc attr, content) @@ -240,21 +233,19 @@ parseDirectiveKey :: PandocMonad m => MuseParser m String parseDirectiveKey = char '#' *> many (letter <|> char '-') parseEmacsDirective :: PandocMonad m => MuseParser m (String, F Inlines) -parseEmacsDirective = do - key <- parseDirectiveKey - spaceChar - value <- trimInlinesF . mconcat <$> manyTill (choice inlineList) eol - return (key, value) +parseEmacsDirective = (,) + <$> parseDirectiveKey + <* spaceChar + <*> (trimInlinesF . mconcat <$> manyTill (choice inlineList) eol) parseAmuseDirective :: PandocMonad m => MuseParser m (String, F Inlines) -parseAmuseDirective = do - key <- parseDirectiveKey - many1 spaceChar - value <- trimInlinesF . mconcat <$> many1Till inline endOfDirective - many blankline - return (key, value) +parseAmuseDirective = (,) + <$> parseDirectiveKey + <* many1 spaceChar + <*> (trimInlinesF . mconcat <$> many1Till inline endOfDirective) + <* many blankline where - endOfDirective = lookAhead $ eof <|> try (newline >> (void blankline <|> void parseDirectiveKey)) + endOfDirective = lookAhead $ eof <|> try (newline *> (void blankline <|> void parseDirectiveKey)) directive :: PandocMonad m => MuseParser m () directive = do @@ -372,18 +363,17 @@ comment :: PandocMonad m => MuseParser m (F Blocks) comment = try $ do getPosition >>= \pos -> guard (sourceColumn pos == 1) char ';' - optional (spaceChar >> many (noneOf "\n")) + optional (spaceChar *> many (noneOf "\n")) eol return mempty -- | Parse a horizontal rule, consisting of 4 or more @\'-\'@ characters. separator :: PandocMonad m => MuseParser m (F Blocks) -separator = try $ do - string "----" - many $ char '-' - many spaceChar - eol - return $ return B.horizontalRule +separator = try $ pure B.horizontalRule + <$ string "----" + <* many (char '-') + <* many spaceChar + <* eol headingStart :: PandocMonad m => MuseParser m (String, Int) headingStart = try $ do @@ -418,11 +408,10 @@ amuseHeadingUntil end = try $ do -- | Parse an example between @{{{@ and @}}}@. -- It is an Amusewiki extension influenced by Creole wiki, as described in @Text::Amuse@ documentation. example :: PandocMonad m => MuseParser m (F Blocks) -example = try $ do - string "{{{" - optional blankline - contents <- manyTill anyChar $ try (optional blankline >> string "}}}") - return $ return $ B.codeBlock contents +example = try $ pure . B.codeBlock + <$ string "{{{" + <* optional blankline + <*> manyTill anyChar (try (optional blankline *> string "}}}")) -- | Parse an @\<example>@ tag. exampleTag :: PandocMonad m => MuseParser m (F Blocks) @@ -482,7 +471,7 @@ playTag = do verseLine :: PandocMonad m => MuseParser m (F Inlines) verseLine = do - indent <- (B.str <$> many1 (char ' ' >> pure '\160')) <|> pure mempty + indent <- (B.str <$> many1 ('\160' <$ char ' ')) <|> pure mempty rest <- manyTill (choice inlineList) newline return $ trimInlinesF $ mconcat (pure indent : rest) @@ -494,13 +483,13 @@ verseTag = try $ do openTag "verse" manyTill spaceChar eol let indent = count (sourceColumn pos - 1) spaceChar - content <- sequence <$> manyTill (indent >> verseLine) (try $ indent >> closeTag "verse") + content <- sequence <$> manyTill (indent *> verseLine) (try $ indent *> closeTag "verse") manyTill spaceChar eol return $ B.lineBlock <$> content -- | Parse @\<comment>@ tag. commentTag :: PandocMonad m => MuseParser m (F Blocks) -commentTag = htmlBlock "comment" >> return mempty +commentTag = mempty <$ htmlBlock "comment" -- | Parse paragraph contents. paraContentsUntil :: PandocMonad m @@ -508,7 +497,7 @@ paraContentsUntil :: PandocMonad m -> MuseParser m (F Inlines, a) paraContentsUntil end = do updateState (\st -> st { museInPara = True }) - (l, e) <- someUntil inline $ try (manyTill spaceChar eol >> end) + (l, e) <- someUntil inline $ try (manyTill spaceChar eol *> end) updateState (\st -> st { museInPara = False }) return (trimInlinesF $ mconcat l, e) @@ -522,9 +511,10 @@ paraUntil end = do first (fmap B.para) <$> paraContentsUntil end noteMarker :: PandocMonad m => MuseParser m String -noteMarker = try $ do - char '[' - (:) <$> oneOf "123456789" <*> manyTill digit (char ']') +noteMarker = try $ (:) + <$ char '[' + <*> oneOf "123456789" + <*> manyTill digit (char ']') -- Amusewiki version of note -- Parsing is similar to list item, except that note marker is used instead of list marker @@ -567,16 +557,15 @@ emacsNoteBlock = try $ do lineVerseLine :: PandocMonad m => MuseParser m (F Inlines) lineVerseLine = try $ do string "> " - indent <- many (char ' ' >> pure '\160') + indent <- many ('\160' <$ char ' ') let indentEl = if null indent then mempty else B.str indent rest <- manyTill (choice inlineList) eol return $ trimInlinesF $ mconcat (pure indentEl : rest) blanklineVerseLine :: PandocMonad m => MuseParser m (F Inlines) -blanklineVerseLine = try $ do - char '>' - blankline - pure mempty +blanklineVerseLine = try $ mempty + <$ char '>' + <* blankline -- | Parse a line block indicated by @\'>\'@ characters. lineBlock :: PandocMonad m => MuseParser m (F Blocks) @@ -596,7 +585,7 @@ bulletListItemsUntil indent end = try $ do char '-' void spaceChar <|> lookAhead eol updateState (\st -> st { museInPara = False }) - (x, (xs, e)) <- listItemContentsUntil (indent + 2) (try (optional blankline >> indentWith indent >> bulletListItemsUntil indent end)) (([],) <$> end) + (x, (xs, e)) <- listItemContentsUntil (indent + 2) (try (optional blankline *> indentWith indent *> bulletListItemsUntil indent end)) (([],) <$> end) return (x:xs, e) -- | Parse a bullet list. @@ -643,7 +632,7 @@ orderedListItemsUntil indent style end = pos <- getPosition void spaceChar <|> lookAhead eol updateState (\st -> st { museInPara = False }) - (x, (xs, e)) <- listItemContentsUntil (sourceColumn pos) (try (optional blankline >> indentWith indent >> museOrderedListMarker style >> continuation)) (([],) <$> end) + (x, (xs, e)) <- listItemContentsUntil (sourceColumn pos) (try (optional blankline *> indentWith indent *> museOrderedListMarker style *> continuation)) (([],) <$> end) return (x:xs, e) -- | Parse an ordered list. @@ -667,7 +656,7 @@ descriptionsUntil :: PandocMonad m descriptionsUntil indent end = do void spaceChar <|> lookAhead eol updateState (\st -> st { museInPara = False }) - (x, (xs, e)) <- listItemContentsUntil indent (try (optional blankline >> indentWith indent >> manyTill spaceChar (string "::") >> descriptionsUntil indent end)) (([],) <$> end) + (x, (xs, e)) <- listItemContentsUntil indent (try (optional blankline *> indentWith indent *> manyTill spaceChar (string "::") *> descriptionsUntil indent end)) (([],) <$> end) return (x:xs, e) definitionListItemsUntil :: PandocMonad m @@ -680,7 +669,7 @@ definitionListItemsUntil indent end = continuation = try $ do pos <- getPosition term <- trimInlinesF . mconcat <$> manyTill (choice inlineList) (try $ string "::") - (x, (xs, e)) <- descriptionsUntil (sourceColumn pos) (try (optional blankline >> indentWith indent >> continuation) <|> (([],) <$> end)) + (x, (xs, e)) <- descriptionsUntil (sourceColumn pos) (try (optional blankline *> indentWith indent *> continuation) <|> (([],) <$> end)) let xx = (,) <$> term <*> sequence x return (xx:xs, e) @@ -736,7 +725,7 @@ museAppendElement element tbl = tableCell :: PandocMonad m => MuseParser m (F Blocks) tableCell = try $ fmap B.plain . trimInlinesF . mconcat <$> manyTill inline (lookAhead cellEnd) - where cellEnd = try $ void (many1 spaceChar >> char '|') <|> eol + where cellEnd = try $ void (many1 spaceChar *> char '|') <|> eol tableElements :: PandocMonad m => MuseParser m (F [MuseTableElement]) tableElements = sequence <$> (tableParseElement `sepEndBy1` eol) @@ -758,11 +747,10 @@ tableParseElement = tableParseHeader tableParseRow :: PandocMonad m => Int -- ^ Number of separator characters -> MuseParser m (F [Blocks]) -tableParseRow n = try $ do - fields <- tableCell `sepBy2` fieldSep - return $ sequence fields - where p `sepBy2` sep = (:) <$> p <*> many1 (sep >> p) - fieldSep = many1 spaceChar >> count n (char '|') >> (void (many1 spaceChar) <|> void (lookAhead newline)) +tableParseRow n = try $ + sequence <$> (tableCell `sepBy2` fieldSep) + where p `sepBy2` sep = (:) <$> p <*> many1 (sep *> p) + fieldSep = many1 spaceChar *> count n (char '|') *> (void (many1 spaceChar) <|> void (lookAhead newline)) -- | Parse a table header row. tableParseHeader :: PandocMonad m => MuseParser m (F MuseTableElement) @@ -778,10 +766,10 @@ tableParseFooter = fmap MuseFooterRow <$> tableParseRow 3 -- | Parse table caption. tableParseCaption :: PandocMonad m => MuseParser m (F MuseTableElement) -tableParseCaption = try $ do - many spaceChar - string "|+" - fmap MuseCaption <$> (trimInlinesF . mconcat <$> many1Till inline (string "+|")) +tableParseCaption = try $ fmap MuseCaption . trimInlinesF . mconcat + <$ many spaceChar + <* string "|+" + <*> many1Till inline (string "+|") -- ** Inline parsers @@ -815,10 +803,7 @@ inline = endline <|> choice inlineList <?> "inline" -- | Parse a soft break. endline :: PandocMonad m => MuseParser m (F Inlines) -endline = try $ do - newline - notFollowedBy blankline - return $ return B.softbreak +endline = try $ pure B.softbreak <$ newline <* notFollowedBy blankline parseAnchor :: PandocMonad m => MuseParser m String parseAnchor = try $ do @@ -848,15 +833,11 @@ footnote = try $ do return $ B.note contents' whitespace :: PandocMonad m => MuseParser m (F Inlines) -whitespace = try $ do - skipMany1 spaceChar - return $ return B.space +whitespace = try $ pure B.space <$ skipMany1 spaceChar -- | Parse @\<br>@ tag. br :: PandocMonad m => MuseParser m (F Inlines) -br = try $ do - string "<br>" - return $ return B.linebreak +br = try $ pure B.linebreak <$ string "<br>" emphasisBetween :: (PandocMonad m, Show a) => MuseParser m a -> MuseParser m (F Inlines) emphasisBetween c = try $ enclosedInlines c c @@ -867,7 +848,7 @@ enclosed :: (Show end, Stream s m Char) => ParserT s st m t -- ^ start parser -> ParserT s st m a -- ^ content parser (to be used repeatedly) -> ParserT s st m [a] enclosed start end parser = try $ - start >> notFollowedBy spaceChar >> many1Till parser end + start *> notFollowedBy spaceChar *> many1Till parser end enclosedInlines :: (PandocMonad m, Show a, Show b) => MuseParser m a @@ -880,9 +861,9 @@ enclosedInlines start end = try $ inlineTag :: PandocMonad m => String -- ^ Tag name -> MuseParser m (F Inlines) -inlineTag tag = try $ do - openTag tag - mconcat <$> manyTill inline (closeTag tag) +inlineTag tag = try $ mconcat + <$ openTag tag + <*> manyTill inline (closeTag tag) -- | Parse strong inline markup, indicated by @**@. strong :: PandocMonad m => MuseParser m (F Inlines) @@ -933,9 +914,7 @@ classTag = do -- | Parse "~~" as nonbreaking space. nbsp :: PandocMonad m => MuseParser m (F Inlines) -nbsp = try $ do - string "~~" - return $ return $ B.str "\160" +nbsp = try $ pure (B.str "\160") <$ string "~~" -- | Parse code markup, indicated by @\'=\'@ characters. code :: PandocMonad m => MuseParser m (F Inlines) @@ -983,7 +962,9 @@ linkOrImage = try $ do return res linkContent :: PandocMonad m => MuseParser m (F Inlines) -linkContent = char '[' >> trimInlinesF . mconcat <$> manyTill inline (char ']') +linkContent = trimInlinesF . mconcat + <$ char '[' + <*> manyTill inline (char ']') -- | Parse a link starting with @URL:@ explicitLink :: PandocMonad m => MuseParser m (F Inlines) @@ -1016,12 +997,11 @@ image = try $ do ext <- imageExtension (width, align) <- option (Nothing, Nothing) imageAttrs return (ext, width, align) - imageAttrs = do - many1 spaceChar - width <- optionMaybe (many1 digit) - many spaceChar - align <- optionMaybe (oneOf "rlf") - return (width, align) + imageAttrs = (,) + <$ many1 spaceChar + <*> optionMaybe (many1 digit) + <* many spaceChar + <*> optionMaybe (oneOf "rlf") link :: PandocMonad m => MuseParser m (F Inlines) link = try $ do |