mirror of
https://github.com/github/semantic.git
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63 lines
1.9 KiB
Haskell
63 lines
1.9 KiB
Haskell
module Main where
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import Categorizable
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import Diff
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import Interpreter
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import qualified Parser as P
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import Syntax
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import Range
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import Split
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import Term
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import TreeSitter
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import Unified
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import Control.Comonad.Cofree
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import qualified Data.Map as Map
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import qualified Data.ByteString.Char8 as B1
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import qualified Data.ByteString.Lazy as B2
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import Data.Set hiding (split)
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import Options.Applicative
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import System.FilePath
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import Foreign.Ptr
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data Output = Unified | Split
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data Argument = Argument { output :: Output, sourceA :: FilePath, sourceB :: FilePath }
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arguments :: Parser Argument
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arguments = Argument
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<$> (flag Split Unified (long "unified" <> help "output a unified diff")
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<|> flag' Split (long "split" <> help "output a split diff"))
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<*> argument str (metavar "FILE a")
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<*> argument str (metavar "FILE b")
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main :: IO ()
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main = do
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arguments <- execParser opts
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let (sourceAPath, sourceBPath) = (sourceA arguments, sourceB arguments)
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aContents <- readFile sourceAPath
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bContents <- readFile sourceBPath
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(aTerm, bTerm) <- case (parserForType . takeExtension) sourceAPath of
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Just parse -> do aTerm <- parse aContents
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bTerm <- parse bContents
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return (aTerm, bTerm)
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Nothing -> error ("Unsupported language extension in path: " ++ sourceAPath)
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let diff = interpret comparable aTerm bTerm in
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case output arguments of
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Unified -> do
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output <- unified diff aContents bContents
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B1.putStr output
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Split -> do
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output <- split diff aContents bContents
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B2.putStr output
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where
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opts = info (helper <*> arguments)
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(fullDesc <> progDesc "Diff some things" <> header "semantic-diff - diff semantically")
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parserForType :: String -> Maybe P.Parser
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parserForType mediaType = parseTreeSitterFile <$> case mediaType of
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".h" -> Just ts_language_c
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".c" -> Just ts_language_c
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".js" -> Just ts_language_javascript
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_ -> Nothing
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