module Text.Highlighting.Kate.Syntax.Ini ( highlight, parseExpression, syntaxName, syntaxExtensions ) where
import Text.Highlighting.Kate.Definitions
import Text.Highlighting.Kate.Common
import qualified Text.Highlighting.Kate.Syntax.Alert
import Text.ParserCombinators.Parsec
import Control.Monad (when)
import Data.Map (fromList)
import Data.Maybe (fromMaybe, maybeToList)
import qualified Data.Set as Set
syntaxName :: String
syntaxName = "INI Files"
syntaxExtensions :: String
syntaxExtensions = "*.ini;*.pls;*.kcfgc"
highlight :: String -> Either String [SourceLine]
highlight input =
case runParser parseSource startingState "source" input of
Left err -> Left $ show err
Right result -> Right result
parseExpression :: GenParser Char SyntaxState LabeledSource
parseExpression = do
st <- getState
let oldLang = synStLanguage st
setState $ st { synStLanguage = "INI Files" }
context <- currentContext <|> (pushContext "ini" >> currentContext)
result <- parseRules context
updateState $ \st -> st { synStLanguage = oldLang }
return result
parseSource = do
lineContents <- lookAhead wholeLine
updateState $ \st -> st { synStCurrentLine = lineContents }
result <- manyTill parseSourceLine eof
return $ map normalizeHighlighting result
startingState = SyntaxState {synStContexts = fromList [("INI Files",["ini"])], synStLanguage = "INI Files", synStCurrentLine = "", synStCharsParsedInLine = 0, synStPrevChar = '\n', synStCaseSensitive = True, synStKeywordCaseSensitive = False, synStCaptures = []}
parseSourceLine = manyTill parseExpressionInternal pEndLine
pEndLine = do
lookAhead $ newline <|> (eof >> return '\n')
context <- currentContext
case context of
"ini" -> return () >> pHandleEndLine
"Value" -> (popContext) >> pEndLine
"Comment" -> (popContext) >> pEndLine
_ -> pHandleEndLine
withAttribute attr txt = do
when (null txt) $ fail "Parser matched no text"
let labs = attr : maybeToList (lookup attr styles)
st <- getState
let oldCharsParsed = synStCharsParsedInLine st
let prevchar = if null txt then '\n' else last txt
updateState $ \st -> st { synStCharsParsedInLine = oldCharsParsed + length txt, synStPrevChar = prevchar }
return (labs, txt)
styles = [("Normal Text","dt"),("Section","kw"),("Comment","co"),("Assignment","ot"),("Value","st"),("Float","fl"),("Int","dv"),("Keyword","kw")]
parseExpressionInternal = do
context <- currentContext
parseRules context <|> (pDefault >>= withAttribute (fromMaybe "" $ lookup context defaultAttributes))
list_keywords = Set.fromList $ words $ "on off default defaults localhost null true false yes no normal e_all e_error e_warning e_parse e_notice e_strict e_core_error e_core_warning e_compile_error e_compile_warning e_user_error e_user_warning e_user_notice"
regex_'3b'2e'2a'24 = compileRegex ";.*$"
regex_'23'2e'2a'24 = compileRegex "#.*$"
defaultAttributes = [("ini","Normal Text"),("Value","Value"),("Comment","Comment")]
parseRules "ini" =
do (attr, result) <- (((pRangeDetect '[' ']' >>= withAttribute "Section") >>~ (popContext))
<|>
((pDetectChar False '=' >>= withAttribute "Assignment") >>~ pushContext "Value")
<|>
((pFirstNonSpace >> pDetectChar False ';' >>= withAttribute "Comment") >>~ pushContext "Comment")
<|>
((pFirstNonSpace >> pDetectChar False '#' >>= withAttribute "Comment") >>~ pushContext "Comment"))
return (attr, result)
parseRules "Value" =
do (attr, result) <- (((pFloat >>= withAttribute "Float"))
<|>
((pInt >>= withAttribute "Int"))
<|>
((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_keywords >>= withAttribute "Keyword"))
<|>
((pRegExpr regex_'3b'2e'2a'24 >>= withAttribute "Comment") >>~ (popContext))
<|>
((pRegExpr regex_'23'2e'2a'24 >>= withAttribute "Comment") >>~ (popContext)))
return (attr, result)
parseRules "Comment" =
do (attr, result) <- (((pDetectSpaces >>= withAttribute "Comment"))
<|>
((Text.Highlighting.Kate.Syntax.Alert.parseExpression))
<|>
((pDetectIdentifier >>= withAttribute "Comment")))
return (attr, result)
parseRules x = fail $ "Unknown context" ++ x