SConfig (empty) → 0.1.0.0

raw patch · 4 files changed

+95/−0 lines, 4 filesdep +basedep +containerssetup-changed

Dependencies added: base, containers

Files

• LICENSE +20/−0
• SConfig.cabal +25/−0
• Setup.hs +2/−0
• src/Data/SConfig.hs +48/−0

@@ -0,0 +1,20 @@+Copyright (c) 2014 Francesco Gazzetta++Permission is hereby granted, free of charge, to any person obtaining+a copy of this software and associated documentation files (the+"Software"), to deal in the Software without restriction, including+without limitation the rights to use, copy, modify, merge, publish,+distribute, sublicense, and/or sell copies of the Software, and to+permit persons to whom the Software is furnished to do so, subject to+the following conditions:++The above copyright notice and this permission notice shall be included+in all copies or substantial portions of the Software.++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

@@ -0,0 +1,25 @@+-- Initial SConfig.cabal generated by cabal init.  For further +-- documentation, see http://haskell.org/cabal/users-guide/++name:                SConfig+version:             0.1.0.0+synopsis:            A simple config library+-- description:         +homepage:            https://github.com/fgaz/SConfig+license:             MIT+license-file:        LICENSE+author:              Francesco Gazzetta+maintainer:          fgaz@users.noreply.github.com+-- copyright:           +category:            Configuration+build-type:          Simple+-- extra-source-files:  +cabal-version:       >=1.10++library+  exposed-modules:     Data.SConfig+  -- other-modules:       +  -- other-extensions:    +  build-depends:       base >=4.7 && <4.8, containers >=0.5 && <0.6+  hs-source-dirs:      src+  default-language:    Haskell2010

@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain

@@ -0,0 +1,48 @@+module Data.SConfig+( parseConfig+, getValue+, Config+, Key+, Value+) where++import qualified Data.Map as M+import Data.List+import Data.Maybe (fromJust)++-- | Config key, alias for String.+type Key = String++-- | Config value, alias for String.+type Value = String++-- | Parsed configuration. Basically a Map String String+type Config = M.Map Key Value++-- | Parse configuration+parseConfig :: String -> Config+parseConfig str = foldl readConfigLine M.empty --apply readConfigLine to every line+                      $ filter (elem '=') --make sure all lines are actual configuration lines+                      $ concatEscaped+                      $ filter (\x -> (not $ null x) && (take 1 x) /= "#") --remove comments & empty lines+                      $ lines str++--inserts a parsed key-value pair into the Config accumulator+readConfigLine :: Config -> String -> Config+readConfigLine config str = M.insert+                                (filter (/=' ') key) --spaces only cause errors.+                                    value+                                config+    where (key,_:value) = splitAt+                              ( fromJust $ --already checked that str contains '='+                                    elemIndex '=' str+                              )+                              str++--concatenate two lines if the first ends with a backslash+concatEscaped :: [String] -> [String]+concatEscaped lines = foldr (\x (a:acc) -> if last x == '\\' then ((init x) ++ a):acc else x:a:acc) [""] lines++-- | Lookup values in a parsed configuration (alias of Map.lookup)+getValue :: Key -> M.Map Key Value -> Maybe Value+getValue = M.lookup