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Remove cabal-install-parsers wrt #1092
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,107 @@ | ||
| {-# LANGUAGE CPP #-} | ||
| {-# LANGUAGE OverloadedStrings #-} | ||
| {-# LANGUAGE UndecidableInstances #-} | ||
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| module GHCup.CabalConfig (getStoreDir) where | ||
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| import Data.ByteString (ByteString) | ||
| import Data.List.NonEmpty (NonEmpty) | ||
| import Data.Map (Map) | ||
| import System.Directory (getAppUserDataDirectory) | ||
| import System.Environment (lookupEnv) | ||
| import System.FilePath ((</>)) | ||
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| import qualified Data.ByteString as BS | ||
| import qualified Data.Map.Strict as M | ||
| import qualified Distribution.CabalSpecVersion as C | ||
| import qualified Distribution.FieldGrammar as C | ||
| import qualified Distribution.FieldGrammar.Parsec as C | ||
| import qualified Distribution.Fields as C | ||
| import qualified Distribution.Fields.LexerMonad as C | ||
| import qualified Distribution.Parsec as C | ||
| import qualified Distribution.Utils.Generic as C | ||
| import qualified Text.Parsec as P | ||
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| import Data.Foldable (for_) | ||
| import Distribution.Parsec.Error | ||
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| getStoreDir :: IO FilePath | ||
| getStoreDir = do | ||
| fp <- findConfig | ||
| bs <- BS.readFile fp | ||
| either (fail . show . fmap (showPError fp)) resolveConfig (parseConfig bs) | ||
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| ------------------------------------------------------------------------------- | ||
| -- Find config | ||
| ------------------------------------------------------------------------------- | ||
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| -- | Find the @~\/.cabal\/config@ file. | ||
| findConfig :: IO FilePath | ||
| findConfig = do | ||
| env <- lookupEnv "CABAL_CONFIG" | ||
| case env of | ||
| Just p -> return p | ||
| Nothing -> do | ||
| cabalDir <- findCabalDir | ||
| return (cabalDir </> "config") | ||
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| -- | Find the @~\/.cabal@ dir. | ||
| findCabalDir :: IO FilePath | ||
| findCabalDir = do | ||
| cabalDirVar <- lookupEnv "CABAL_DIR" | ||
| maybe (getAppUserDataDirectory "cabal") return cabalDirVar | ||
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| ------------------------------------------------------------------------------- | ||
| -- Parsing | ||
| ------------------------------------------------------------------------------- | ||
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| -- | Parse @~\/.cabal\/config@ file. | ||
| parseConfig :: ByteString -> Either (NonEmpty PError) (Maybe FilePath) | ||
| parseConfig = parseWith $ \fields0 -> do | ||
| let (fields1, _) = C.partitionFields fields0 | ||
| let fields2 = M.filterWithKey (\k _ -> k `elem` knownFields) fields1 | ||
| parse fields2 | ||
| where | ||
| knownFields = C.fieldGrammarKnownFieldList grammar | ||
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| parse :: Map C.FieldName [C.NamelessField C.Position] | ||
| -> C.ParseResult (Maybe FilePath) | ||
| parse fields = C.parseFieldGrammar C.cabalSpecLatest fields grammar | ||
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| grammar :: C.ParsecFieldGrammar (Maybe FilePath) (Maybe FilePath) | ||
| grammar = mempty | ||
| <$> C.optionalFieldAla "store-dir" C.FilePathNT id | ||
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| parseWith | ||
| :: ([C.Field C.Position] -> C.ParseResult a) -- ^ parse | ||
| -> ByteString -- ^ contents | ||
| -> Either (NonEmpty PError) a | ||
| parseWith parser bs = case C.runParseResult result of | ||
| (_, Right x) -> Right x | ||
| (_, Left (_, es)) -> Left es | ||
| where | ||
| result = case C.readFields' bs of | ||
| Left perr -> C.parseFatalFailure pos (show perr) where | ||
| ppos = P.errorPos perr | ||
| pos = C.Position (P.sourceLine ppos) (P.sourceColumn ppos) | ||
| Right (fields, lexWarnings) -> do | ||
| C.parseWarnings (C.toPWarnings lexWarnings) | ||
| for_ (C.validateUTF8 bs) $ \pos -> | ||
| C.parseWarning C.zeroPos C.PWTUTF $ "UTF8 encoding problem at byte offset " ++ show pos | ||
| parser fields | ||
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| ------------------------------------------------------------------------------- | ||
| -- Resolving | ||
| ------------------------------------------------------------------------------- | ||
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| -- | Fill the default in @~\/.cabal\/config@ file. | ||
| resolveConfig :: Maybe FilePath -> IO FilePath | ||
| resolveConfig (Just fp) = pure fp | ||
| resolveConfig Nothing = do | ||
| c <- findCabalDir | ||
| return (c </> "store") | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,4 +1,4 @@ | ||
| module PlanJson where | ||
| module GHCup.PlanJson where | ||
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| import Control.Monad (unless) | ||
| import System.FilePath | ||
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