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authorAndrea Rossato <andrea.rossato@ing.unitn.it>2008-04-29 11:43:41 +0200
committerAndrea Rossato <andrea.rossato@ing.unitn.it>2008-04-29 11:43:41 +0200
commit14ce2a41a166fe0282f0fc19fad81239590b441a (patch)
tree8382cd8a16339aa6fb5e6318cd24d1cb393d8551 /Parsers.hs
parent2748741cc06bb7f1b71e465602ec778ccd34b436 (diff)
downloadxmobar-14ce2a41a166fe0282f0fc19fad81239590b441a.tar.gz
xmobar-14ce2a41a166fe0282f0fc19fad81239590b441a.tar.bz2
Parser: '<' and '>' are not reserved characters anymore and can be used in the template
Consider this the first 0.9 release candidate. darcs-hash:20080429094341-d6583-07a53391a46cd0f17c8e6dd4422c3216cf31a0dc.gz
Diffstat (limited to 'Parsers.hs')
-rw-r--r--Parsers.hs80
1 files changed, 39 insertions, 41 deletions
diff --git a/Parsers.hs b/Parsers.hs
index 72fba94..1a01723 100644
--- a/Parsers.hs
+++ b/Parsers.hs
@@ -3,7 +3,7 @@
-- Module : Xmobar.Parsers
-- Copyright : (c) Andrea Rossato
-- License : BSD-style (see LICENSE)
---
+--
-- Maintainer : Andrea Rossato <andrea.rossato@unibz.it>
-- Stability : unstable
-- Portability : unportable
@@ -41,59 +41,57 @@ formatting template.
-- | Runs the actual string parsers
parseString :: Config -> String -> IO [(String, String)]
-parseString config s =
- case (parse (stringParser config) "" s) of
- Left _ -> return [("Could not parse string: " ++ s
- , (fgColor config))]
- Right x -> return x
+parseString c s =
+ case (parse (stringParser c) "" s) of
+ Left _ -> return [("Could not parse string: " ++ s, fgColor c)]
+ Right x -> return (concat x)
-- | Gets the string and combines the needed parsers
-stringParser :: Config -> Parser [(String, String)]
-stringParser c = manyTill (colorsAndText c <|> defaultColors c) eof
+stringParser :: Config -> Parser [[(String, String)]]
+stringParser c = manyTill (defaultColors c) eof
-- | Parses a string with the default color (no color set)
-defaultColors :: Config -> Parser (String, String)
-defaultColors config =
- do { s <- many $ noneOf "<"
- ; return (s,(fgColor config))
- }
- <|> colorsAndText config
+defaultColors :: Config -> Parser [(String, String)]
+defaultColors c = do
+ s <- manyTill anyChar (tryString "<fc" <|> endOfLine "")
+ n <- colorsAndText <|> endOfLine ("","")
+ return [(s,fgColor c),n]
-- | Parses a string with a color set
-colorsAndText :: Config -> Parser (String, String)
-colorsAndText config =
- do { string "<fc="
- ; c <- colorSpec
- ; string ">"
- ; s <- many $ noneOf "<"
- ; string "</fc>"
- ; return (s,c)
- }
- <|> defaultColors config
+colorsAndText :: Parser (String, String)
+colorsAndText = do
+ string "="
+ c <- colorSpec
+ string ">"
+ s <- manyTill anyChar (tryString "</fc>")
+ return (s,c)
+
+endOfLine :: a -> Parser a
+endOfLine r = eof >> return r
+
+tryString :: String -> Parser String
+tryString = try . string
-- | Parses a color specification (hex or named)
colorSpec :: Parser String
-colorSpec =
- many1 (alphaNum <|> char ',' <|> char '#')
+colorSpec = many1 (alphaNum <|> char ',' <|> char '#')
-- | Parses the output template string
templateStringParser :: Config -> Parser (String,String,String)
-templateStringParser c =
- do{ s <- many $ noneOf (sepChar c)
- ; (com,_,_) <- templateCommandParser c
- ; ss <- many $ noneOf (sepChar c)
- ; return (com, s, ss)
- }
+templateStringParser c = do
+ s <- many $ noneOf (sepChar c)
+ (com,_,_) <- templateCommandParser c
+ ss <- many $ noneOf (sepChar c)
+ return (com, s, ss)
-- | Parses the command part of the template string
templateCommandParser :: Config -> Parser (String,String,String)
-templateCommandParser c =
- do { let chr = head $ sepChar c
- ; char chr
- ; com <- many $ noneOf (sepChar c)
- ; char chr
- ; return $ (com,"","")
- }
+templateCommandParser c = do
+ let chr = head $ sepChar c
+ char chr
+ com <- many $ noneOf (sepChar c)
+ char chr
+ return $ (com,"","")
-- | Combines the template parsers
templateParser :: Config -> Parser [(String,String,String)]
@@ -101,7 +99,7 @@ templateParser c = many (templateStringParser c)
-- | Actually runs the template parsers
parseTemplate :: Config -> String -> IO [(Runnable,String,String)]
-parseTemplate config s =
+parseTemplate config s =
do str <- case (parse (templateParser config) "" s) of
Left _ -> return [("","","")]
Right x -> return x
@@ -113,7 +111,7 @@ parseTemplate config s =
-- | resulting output string.
combine :: Config -> Map.Map String Runnable -> [(String, String, String)] -> [(Runnable,String,String)]
combine _ _ [] = []
-combine config m ((ts,s,ss):xs) =
+combine config m ((ts,s,ss):xs) =
[(com, s, ss)] ++ combine config m xs
where com = Map.findWithDefault dflt ts m
dflt = Run $ Com ts [] [] 10