{-# LANGUAGE CPP, BangPatterns #-}
module Sandbox
( getSandboxArguments
, getPackageDbDir
, getSandboxConfigFile
) where
#if __GLASGOW_HASKELL__ < 710
import Data.Functor ((<$>))
#endif
import Control.Exception as E (catch, SomeException, throwIO)
import Data.Char (isSpace)
import Data.List (isPrefixOf, tails)
import System.Directory (getCurrentDirectory, doesFileExist)
import System.FilePath ((</>), takeDirectory, takeFileName)
configFile :: String
configFile :: String
configFile = "cabal.sandbox.config"
pkgDbKey :: String
pkgDbKey :: String
pkgDbKey = "package-db:"
pkgDbKeyLen :: Int
pkgDbKeyLen :: Int
pkgDbKeyLen = String -> Int
forall (t :: * -> *) a. Foldable t => t a -> Int
length String
pkgDbKey
getSandboxArguments :: IO [String]
getSandboxArguments :: IO [String]
getSandboxArguments = (String -> [String]
sandboxArguments (String -> [String]) -> IO String -> IO [String]
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> IO String
getPkgDb) IO [String] -> (SomeException -> IO [String]) -> IO [String]
forall e a. Exception e => IO a -> (e -> IO a) -> IO a
`E.catch` SomeException -> IO [String]
handler
where
getPkgDb :: IO String
getPkgDb = IO String
getCurrentDirectory IO String -> (String -> IO String) -> IO String
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= String -> IO String
getSandboxConfigFile IO String -> (String -> IO String) -> IO String
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= String -> IO String
getPackageDbDir
handler :: SomeException -> IO [String]
handler :: SomeException -> IO [String]
handler _ = [String] -> IO [String]
forall (m :: * -> *) a. Monad m => a -> m a
return []
getSandboxConfigFile :: FilePath -> IO FilePath
getSandboxConfigFile :: String -> IO String
getSandboxConfigFile dir :: String
dir = do
let cfile :: String
cfile = String
dir String -> String -> String
</> String
configFile
Bool
exist <- String -> IO Bool
doesFileExist String
cfile
if Bool
exist then
String -> IO String
forall (m :: * -> *) a. Monad m => a -> m a
return String
cfile
else do
let dir' :: String
dir' = String -> String
takeDirectory String
dir
if String
dir String -> String -> Bool
forall a. Eq a => a -> a -> Bool
== String
dir' then
IOError -> IO String
forall e a. Exception e => e -> IO a
throwIO (IOError -> IO String) -> IOError -> IO String
forall a b. (a -> b) -> a -> b
$ String -> IOError
userError "sandbox config file not found"
else
String -> IO String
getSandboxConfigFile String
dir'
getPackageDbDir :: FilePath -> IO FilePath
getPackageDbDir :: String -> IO String
getPackageDbDir sconf :: String
sconf = do
!String
path <- String -> String
extractValue (String -> String) -> (String -> String) -> String -> String
forall b c a. (b -> c) -> (a -> b) -> a -> c
. String -> String
parse (String -> String) -> IO String -> IO String
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> String -> IO String
readFile String
sconf
String -> IO String
forall (m :: * -> *) a. Monad m => a -> m a
return String
path
where
parse :: String -> String
parse = [String] -> String
forall a. [a] -> a
head ([String] -> String) -> (String -> [String]) -> String -> String
forall b c a. (b -> c) -> (a -> b) -> a -> c
. (String -> Bool) -> [String] -> [String]
forall a. (a -> Bool) -> [a] -> [a]
filter ("package-db:" String -> String -> Bool
forall a. Eq a => [a] -> [a] -> Bool
`isPrefixOf`) ([String] -> [String])
-> (String -> [String]) -> String -> [String]
forall b c a. (b -> c) -> (a -> b) -> a -> c
. String -> [String]
lines
extractValue :: String -> String
extractValue = (String, String) -> String
forall a b. (a, b) -> a
fst ((String, String) -> String)
-> (String -> (String, String)) -> String -> String
forall b c a. (b -> c) -> (a -> b) -> a -> c
. (Char -> Bool) -> String -> (String, String)
forall a. (a -> Bool) -> [a] -> ([a], [a])
break Char -> Bool
isSpace (String -> (String, String))
-> (String -> String) -> String -> (String, String)
forall b c a. (b -> c) -> (a -> b) -> a -> c
. (Char -> Bool) -> String -> String
forall a. (a -> Bool) -> [a] -> [a]
dropWhile Char -> Bool
isSpace (String -> String) -> (String -> String) -> String -> String
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Int -> String -> String
forall a. Int -> [a] -> [a]
drop Int
pkgDbKeyLen
sandboxArguments :: FilePath -> [String]
sandboxArguments :: String -> [String]
sandboxArguments pkgDb :: String
pkgDb = [String
noUserPkgDbOpt, String
pkgDbOpt, String
pkgDb]
where
ver :: Int
ver = String -> Int
extractGhcVer String
pkgDb
(pkgDbOpt :: String
pkgDbOpt,noUserPkgDbOpt :: String
noUserPkgDbOpt)
| Int
ver Int -> Int -> Bool
forall a. Ord a => a -> a -> Bool
< 706 = ("-package-conf","-no-user-package-conf")
| Bool
otherwise = ("-package-db", "-no-user-package-db")
extractGhcVer :: String -> Int
dir :: String
dir = Int
ver
where
file :: String
file = String -> String
takeFileName String
dir
findVer :: String -> String
findVer = Int -> String -> String
forall a. Int -> [a] -> [a]
drop 4 (String -> String) -> (String -> String) -> String -> String
forall b c a. (b -> c) -> (a -> b) -> a -> c
. [String] -> String
forall a. [a] -> a
head ([String] -> String) -> (String -> [String]) -> String -> String
forall b c a. (b -> c) -> (a -> b) -> a -> c
. (String -> Bool) -> [String] -> [String]
forall a. (a -> Bool) -> [a] -> [a]
filter ("ghc-" String -> String -> Bool
forall a. Eq a => [a] -> [a] -> Bool
`isPrefixOf`) ([String] -> [String])
-> (String -> [String]) -> String -> [String]
forall b c a. (b -> c) -> (a -> b) -> a -> c
. String -> [String]
forall a. [a] -> [[a]]
tails
(verStr1 :: String
verStr1,_:left :: String
left) = (Char -> Bool) -> String -> (String, String)
forall a. (a -> Bool) -> [a] -> ([a], [a])
break (Char -> Char -> Bool
forall a. Eq a => a -> a -> Bool
== '.') (String -> (String, String)) -> String -> (String, String)
forall a b. (a -> b) -> a -> b
$ String -> String
findVer String
file
(verStr2 :: String
verStr2,_) = (Char -> Bool) -> String -> (String, String)
forall a. (a -> Bool) -> [a] -> ([a], [a])
break (Char -> Char -> Bool
forall a. Eq a => a -> a -> Bool
== '.') String
left
ver :: Int
ver = String -> Int
forall a. Read a => String -> a
read String
verStr1 Int -> Int -> Int
forall a. Num a => a -> a -> a
* 100 Int -> Int -> Int
forall a. Num a => a -> a -> a
+ String -> Int
forall a. Read a => String -> a
read String
verStr2