diff options
Diffstat (limited to 'src/Text')
| -rw-r--r-- | src/Text/Pandoc/Parsing.hs | 98 | ||||
| -rw-r--r-- | src/Text/Pandoc/Readers/Markdown.hs | 5 |
2 files changed, 102 insertions, 1 deletions
diff --git a/src/Text/Pandoc/Parsing.hs b/src/Text/Pandoc/Parsing.hs index bea38e633..61c47b730 100644 --- a/src/Text/Pandoc/Parsing.hs +++ b/src/Text/Pandoc/Parsing.hs @@ -57,6 +57,7 @@ module Text.Pandoc.Parsing ( (>>~), orderedListMarker, charRef, tableWith, + extraTableWith, gridTableWith, readWith, testStringWith, @@ -542,7 +543,9 @@ tableWith headerParser rowParser lineParser footerParser captionParser = try $ d else return caption' state <- getState let numColumns = stateColumns state - let widths = widthsFromIndices numColumns indices + let widths = if (indices == []) + then replicate (length aligns) 0.0 + else widthsFromIndices numColumns indices return $ Table caption aligns widths heads lines' -- Calculate relative widths of table columns, based on indices @@ -570,6 +573,99 @@ widthsFromIndices numColumns' indices = fracs = map (\l -> (fromIntegral l) / quotient) lengths in tail fracs + +-- Parse an extra table (php-markdown): each line starts and ends with '|', +-- with a mandatory line of '--' to separate the (optionnal) headers from content. +extraTableWith :: GenParser Char ParserState Block -- ^ Block parser + -> GenParser Char ParserState [Inline] -- ^ Caption parser + -> Bool -- ^ Headerless table + -> GenParser Char ParserState Block +extraTableWith block tableCaption headless = + tableWith (extraTableHeader headless block) (extraTableRow block) (extraTableSep '-') extraTableFooter tableCaption + +-- | Parse header for an extra table. +extraTableHeader :: Bool -- ^ Headerless table + -> GenParser Char ParserState Block + -> GenParser Char ParserState ([[Block]], [Alignment], [Int]) +extraTableHeader headless block = try $ do + optional blanklines + rawContent <- if headless + then return $ repeat "" + else many1 + (notFollowedBy (extraTableHeaderSep) >> char '|' >> + many1Till anyChar newline) + aligns <- extraTableHeaderDashedLine + let indices = [] + let rawHeads = if headless + then replicate (length aligns) "" + else map (intercalate " ") $ transpose + $ map (extraTableSplitLine ) + $ map (trimOnceBy '|') rawContent + heads <- mapM (parseFromString $ many block) $ + map removeLeadingTrailingSpace rawHeads + return (heads, aligns, indices) + +extraTableHeaderPart :: GenParser Char st Alignment +extraTableHeaderPart = do + left <- optionMaybe (char ':') + many1 (char '-') + right <- optionMaybe (char ':') + char '|' + return $ + case (left,right) of + (Nothing,Nothing) -> AlignDefault + (Just _,Nothing) -> AlignLeft + (Nothing,Just _) -> AlignRight + (Just _,Just _) -> AlignCenter + +extraTableHeaderDashedLine :: GenParser Char st [Alignment] +extraTableHeaderDashedLine = try $ char '|' >> many1 (extraTableHeaderPart) >>~ blankline + +extraTableHeaderSep :: GenParser Char ParserState Char +extraTableHeaderSep = try $ extraTableHeaderDashedLine >> return '\n' + +-- | Split a header or data line in an extra table. +-- | The line must contain only *inside* separators. +extraTableSplitLine :: String -> [String] +extraTableSplitLine line = map removeLeadingSpace $ + splitBy (== '|') $ removeTrailingSpace line + +-- Remove, if present, a character from both ends of a string +trimOnceBy :: Char -> String -> String +trimOnceBy ch s = + if (head s == ch) && (last s == ch) + then init $ tail s + else s +trimEndOnceBy :: Char -> String -> String +trimEndOnceBy ch s = + if (last s == ch) + then init s + else s + +-- | Parse row of an extra table. +extraTableRow :: GenParser Char ParserState Block + -> [Int] + -> GenParser Char ParserState [[Block]] +extraTableRow block indices = do + cols <- extraTableRawLine + mapM (liftM compactifyCell . parseFromString (many block)) cols + +extraTableRawLine :: GenParser Char ParserState [String] +extraTableRawLine = do + char '|' + line <- many1Till anyChar newline + return (extraTableSplitLine $ trimEndOnceBy '|' line) + +-- | Separator between rows of an extra table. +extraTableSep :: Char -> GenParser Char ParserState Char +extraTableSep ch = do return '\n' + +-- | Parse footer for an extra table. +extraTableFooter :: GenParser Char ParserState [Char] +extraTableFooter = blanklines + +--- + -- Parse a grid table: starts with row of '-' on top, then header -- (which may be grid), then the rows, -- which may be grid, separated by blank lines, and diff --git a/src/Text/Pandoc/Readers/Markdown.hs b/src/Text/Pandoc/Readers/Markdown.hs index faa1e3145..34a6cf7ce 100644 --- a/src/Text/Pandoc/Readers/Markdown.hs +++ b/src/Text/Pandoc/Readers/Markdown.hs @@ -901,6 +901,10 @@ alignType strLst len = (True, True) -> AlignCenter (False, False) -> AlignDefault +extraTable :: Bool -- ^ Headerless table + -> GenParser Char ParserState Block +extraTable = extraTableWith block tableCaption + gridTable :: Bool -- ^ Headerless table -> Parser [Char] ParserState Block gridTable = gridTableWith block tableCaption @@ -908,6 +912,7 @@ gridTable = gridTableWith block tableCaption table :: Parser [Char] ParserState Block table = multilineTable False <|> simpleTable True <|> simpleTable False <|> multilineTable True <|> + extraTable False <|> extraTable True <|> gridTable False <|> gridTable True <?> "table" -- |