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Diffstat (limited to 'src/Xmobar/Run/Parsers.hs')
| -rw-r--r-- | src/Xmobar/Run/Parsers.hs | 244 |
1 files changed, 0 insertions, 244 deletions
diff --git a/src/Xmobar/Run/Parsers.hs b/src/Xmobar/Run/Parsers.hs deleted file mode 100644 index 9b36786..0000000 --- a/src/Xmobar/Run/Parsers.hs +++ /dev/null @@ -1,244 +0,0 @@ -{-# LANGUAGE FlexibleContexts #-} - ------------------------------------------------------------------------------ --- | --- Module : Xmobar.Run.Parsers --- Copyright : (c) Andrea Rossato --- License : BSD-style (see LICENSE) --- --- Maintainer : Jose A. Ortega Ruiz <jao@gnu.org> --- Stability : unstable --- Portability : portable --- --- Parsing for template substrings --- ------------------------------------------------------------------------------ - -module Xmobar.Run.Parsers ( parseString - , colorComponents - , Segment - , FontIndex - , Box(..) - , BoxBorder(..) - , BoxOffset(..) - , BoxMargins(..) - , TextRenderInfo(..) - , Widget(..)) where - -import Control.Monad (guard, mzero) -import Data.Maybe (fromMaybe) -import Data.Int (Int32) -import Text.ParserCombinators.Parsec -import Text.Read (readMaybe) -import Foreign.C.Types (CInt) - -import Xmobar.Config.Types -import Xmobar.Run.Actions - -data Widget = Icon String | Text String | Hspace Int32 deriving Show - -data BoxOffset = BoxOffset Align Int32 deriving (Eq, Show) - --- margins: Top, Right, Bottom, Left -data BoxMargins = BoxMargins Int32 Int32 Int32 Int32 deriving (Eq, Show) - -data BoxBorder = BBTop - | BBBottom - | BBVBoth - | BBLeft - | BBRight - | BBHBoth - | BBFull - deriving (Read, Eq, Show) - -data Box = Box { bBorder :: BoxBorder - , bOffset :: BoxOffset - , bWidth :: CInt - , bColor :: String - , bMargins :: BoxMargins - } deriving (Eq, Show) - -data TextRenderInfo = TextRenderInfo { tColorsString :: String - , tBgTopOffset :: Int32 - , tBgBottomOffset :: Int32 - , tBoxes :: [Box] - } deriving Show - -type Segment = (Widget, TextRenderInfo, FontIndex, Maybe [Action]) - --- | Runs the string parser -parseString :: Config -> String -> IO [Segment] -parseString c s = - case parse (stringParser ci 0 Nothing) "" s of - Left _ -> return [(Text $ "Could not parse string: " ++ s - , ci - , 0 - , Nothing)] - Right x -> return (concat x) - where ci = TextRenderInfo (fgColor c) 0 0 [] - --- | Splits a colors string into its two components -colorComponents :: Config -> String -> (String, String) -colorComponents conf c = - case break (==',') c of - (f,',':b) -> (f, b) - (f, _) -> (f, bgColor conf) - -allParsers :: TextRenderInfo -> FontIndex -> Maybe [Action] -> Parser [Segment] -allParsers c f a = textParser c f a - <|> try (iconParser c f a) - <|> try (hspaceParser c f a) - <|> try (rawParser c f a) - <|> try (actionParser c f a) - <|> try (fontParser c a) - <|> try (boxParser c f a) - <|> colorParser c f a - --- | Gets the string and combines the needed parsers -stringParser :: TextRenderInfo -> FontIndex -> Maybe [Action] -> Parser [[Segment]] -stringParser c f a = manyTill (allParsers c f a) eof - --- | Parses a maximal string without markup. -textParser :: TextRenderInfo -> FontIndex -> Maybe [Action] -> Parser [Segment] -textParser c f a = do s <- many1 $ - noneOf "<" <|> - try (notFollowedBy' (char '<') - (try (string "fc=") <|> - try (string "box") <|> - try (string "fn=") <|> - try (string "action=") <|> - try (string "/action>") <|> - try (string "icon=") <|> - try (string "hspace=") <|> - try (string "raw=") <|> - try (string "/fn>") <|> - try (string "/box>") <|> - string "/fc>")) - return [(Text s, c, f, a)] - --- | Parse a "raw" tag, which we use to prevent other tags from creeping in. --- The format here is net-string-esque: a literal "<raw=" followed by a --- string of digits (base 10) denoting the length of the raw string, --- a literal ":" as digit-string-terminator, the raw string itself, and --- then a literal "/>". -rawParser :: TextRenderInfo -> FontIndex -> Maybe [Action] -> Parser [Segment] -rawParser c f a = do - string "<raw=" - lenstr <- many1 digit - char ':' - case reads lenstr of - [(len,[])] -> do - guard ((len :: Integer) <= fromIntegral (maxBound :: Int)) - s <- count (fromIntegral len) anyChar - string "/>" - return [(Text s, c, f, a)] - _ -> mzero - --- | Wrapper for notFollowedBy that returns the result of the first parser. --- Also works around the issue that, at least in Parsec 3.0.0, notFollowedBy --- accepts only parsers with return type Char. -notFollowedBy' :: Parser a -> Parser b -> Parser a -notFollowedBy' p e = do x <- p - notFollowedBy $ try (e >> return '*') - return x - -iconParser :: TextRenderInfo -> FontIndex -> Maybe [Action] -> Parser [Segment] -iconParser c f a = do - string "<icon=" - i <- manyTill (noneOf ">") (try (string "/>")) - return [(Icon i, c, f, a)] - -hspaceParser :: TextRenderInfo -> FontIndex -> Maybe [Action] -> Parser [Segment] -hspaceParser c f a = do - string "<hspace=" - pVal <- manyTill digit (try (string "/>")) - return [(Hspace (fromMaybe 0 $ readMaybe pVal), c, f, a)] - -actionParser :: TextRenderInfo -> FontIndex -> Maybe [Action] -> Parser [Segment] -actionParser c f act = do - string "<action=" - command <- choice [between (char '`') (char '`') (many1 (noneOf "`")), - many1 (noneOf ">")] - buttons <- (char '>' >> return "1") <|> (space >> spaces >> - between (string "button=") (string ">") (many1 (oneOf "12345"))) - let a = Spawn (toButtons buttons) command - a' = case act of - Nothing -> Just [a] - Just act' -> Just $ a : act' - s <- manyTill (allParsers c f a') (try $ string "</action>") - return (concat s) - -toButtons :: String -> [Button] -toButtons = map (\x -> read [x]) - --- | Parsers a string wrapped in a color specification. -colorParser :: TextRenderInfo -> FontIndex -> Maybe [Action] -> Parser [Segment] -colorParser (TextRenderInfo _ _ _ bs) fidx a = do - c <- between (string "<fc=") (string ">") colors - let colorParts = break (==':') c - let (ot,ob) = case break (==',') (Prelude.drop 1 $ snd colorParts) of - (top,',':btm) -> (top, btm) - (top, _) -> (top, top) - tri = TextRenderInfo (fst colorParts) - (fromMaybe (-1) $ readMaybe ot) - (fromMaybe (-1) $ readMaybe ob) - bs - s <- manyTill (allParsers tri fidx a) (try $ string "</fc>") - return (concat s) - --- | Parses a string wrapped in a box specification. -boxParser :: TextRenderInfo -> FontIndex -> Maybe [Action] -> Parser [Segment] -boxParser (TextRenderInfo cs ot ob bs) f a = do - c <- between (string "<box") (string ">") - (option "" (many1 (alphaNum - <|> char '=' - <|> char ' ' - <|> char '#' - <|> char ','))) - let b = Box BBFull (BoxOffset C 0) 1 cs (BoxMargins 0 0 0 0) - let g = boxReader b (words c) - s <- manyTill - (allParsers (TextRenderInfo cs ot ob (g : bs)) f a) - (try $ string "</box>") - return (concat s) - -boxReader :: Box -> [String] -> Box -boxReader b [] = b -boxReader b (x:xs) = do - let (param,val) = case break (=='=') x of - (p,'=':v) -> (p, v) - (p, _) -> (p, "") - boxReader (boxParamReader b param val) xs - -boxParamReader :: Box -> String -> String -> Box -boxParamReader b _ "" = b -boxParamReader (Box bb off lw fc mgs) "type" val = - Box (fromMaybe bb $ readMaybe ("BB" ++ val)) off lw fc mgs -boxParamReader (Box bb (BoxOffset alg off) lw fc mgs) "offset" (a:o) = - Box bb (BoxOffset align offset) lw fc mgs - where offset = fromMaybe off $ readMaybe o - align = fromMaybe alg $ readMaybe [a] -boxParamReader (Box bb off lw fc mgs) "width" val = - Box bb off (fromMaybe lw $ readMaybe val) fc mgs -boxParamReader (Box bb off lw _ mgs) "color" val = - Box bb off lw val mgs -boxParamReader (Box bb off lw fc mgs@(BoxMargins mt mr mb ml)) ('m':pos) val = do - let mgs' = case pos of - "t" -> BoxMargins (fromMaybe mt $ readMaybe val) mr mb ml - "r" -> BoxMargins mt (fromMaybe mr $ readMaybe val) mb ml - "b" -> BoxMargins mt mr (fromMaybe mb $ readMaybe val) ml - "l" -> BoxMargins mt mr mb (fromMaybe ml $ readMaybe val) - _ -> mgs - Box bb off lw fc mgs' -boxParamReader b _ _ = b - --- | Parsers a string wrapped in a font specification. -fontParser :: TextRenderInfo -> Maybe [Action] -> Parser [Segment] -fontParser c a = do - f <- between (string "<fn=") (string ">") colors - s <- manyTill (allParsers c (fromMaybe 0 $ readMaybe f) a) (try $ string "</fn>") - return (concat s) - --- | Parses a color specification (hex or named) -colors :: Parser String -colors = many1 (alphaNum <|> char ',' <|> char ':' <|> char '#') |