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28 lines
1.2 KiB
Haskell
28 lines
1.2 KiB
Haskell
{-# LANGUAGE RecordWildCards #-}
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module Main where
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import Data.Bifunctor.Join
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import Diffing
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import Options.Applicative
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import qualified DiffOutput as DO
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data Arguments = Arguments { format :: DO.Format, output :: Maybe FilePath, sourceA :: FilePath, sourceB :: FilePath }
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arguments :: Parser Arguments
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arguments = Arguments
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<$> (flag DO.Split DO.Unified (long "unified" <> help "output a unified diff")
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<|> flag DO.Split DO.Patch (long "patch" <> help "output a patch(1)-compatible diff")
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<|> flag' DO.Split (long "split" <> help "output a split diff"))
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<*> optional (strOption (long "output" <> short 'o' <> help "output directory for split diffs, defaulting to stdout if unspecified"))
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<*> strArgument (metavar "FILE a")
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<*> strArgument (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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sources <- sequence $ readAndTranscodeFile <$> Join (sourceA arguments, sourceB arguments)
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DO.printDiff (parserForFilepath $ sourceA arguments) (args arguments) (runJoin sources)
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where opts = info (helper <*> arguments)
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(fullDesc <> progDesc "Diff some things" <> header "semantic-diff - diff semantically")
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args Arguments{..} = DO.DiffArguments { format = format, output = output, outputPath = sourceA }
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