mirror of
https://github.com/github/semantic.git
synced 2024-12-22 06:11:49 +03:00
69 lines
2.8 KiB
Haskell
69 lines
2.8 KiB
Haskell
module Main where
|
|
|
|
import Categorizable
|
|
import Diff
|
|
import Interpreter
|
|
import qualified Parsers as P
|
|
import Syntax
|
|
import Range
|
|
import Split
|
|
import Term
|
|
import Unified
|
|
import Control.Comonad.Cofree
|
|
import qualified Data.ByteString.Char8 as B1
|
|
import qualified Data.ByteString.Lazy as B2
|
|
import Options.Applicative
|
|
import System.Directory
|
|
import System.FilePath
|
|
import qualified System.IO as IO
|
|
|
|
data Renderer = Unified | Split
|
|
|
|
data Argument = Argument { renderer :: Renderer, output :: Maybe FilePath, sourceA :: FilePath, sourceB :: FilePath }
|
|
|
|
arguments :: Parser Argument
|
|
arguments = Argument
|
|
<$> (flag Split Unified (long "unified" <> help "output a unified diff")
|
|
<|> flag' Split (long "split" <> help "output a split diff"))
|
|
<*> (optional $ strOption (long "output" <> short 'o' <> help "output directory for split diffs, defaulting to stdout if unspecified"))
|
|
<*> strArgument (metavar "FILE a")
|
|
<*> strArgument (metavar "FILE b")
|
|
|
|
main :: IO ()
|
|
main = do
|
|
arguments <- execParser opts
|
|
let (sourceAPath, sourceBPath) = (sourceA arguments, sourceB arguments)
|
|
aContents <- readFile sourceAPath
|
|
bContents <- readFile sourceBPath
|
|
(aTerm, bTerm) <- let parse = (P.parserForType . takeExtension) sourceAPath in do
|
|
aTerm <- parse aContents
|
|
bTerm <- parse bContents
|
|
return (replaceLeavesWithWordBranches aContents aTerm, replaceLeavesWithWordBranches bContents bTerm)
|
|
let diff = interpret comparable aTerm bTerm in
|
|
case renderer arguments of
|
|
Unified -> do
|
|
rendered <- unified diff aContents bContents
|
|
B1.putStr rendered
|
|
Split -> do
|
|
rendered <- split diff aContents bContents
|
|
case output arguments of
|
|
Just path -> do
|
|
isDir <- doesDirectoryExist path
|
|
IO.withFile (if isDir then path </> (takeFileName sourceBPath -<.> ".html") else path) IO.WriteMode (write rendered)
|
|
Nothing -> B2.putStr rendered
|
|
where
|
|
opts = info (helper <*> arguments)
|
|
(fullDesc <> progDesc "Diff some things" <> header "semantic-diff - diff semantically")
|
|
write rendered h = B2.hPut h rendered
|
|
|
|
replaceLeavesWithWordBranches :: String -> Term String Info -> Term String Info
|
|
replaceLeavesWithWordBranches source term = replaceIn source 0 term
|
|
where
|
|
replaceIn source startIndex (info@(Info range categories) :< syntax) | substring <- substring (offsetRange (negate startIndex) range) source = info :< case syntax of
|
|
Leaf _ | ranges <- rangesAndWordsFrom (start range) substring, length ranges > 1 -> Indexed $ makeLeaf categories <$> ranges
|
|
Indexed i -> Indexed $ replaceIn substring (start range) <$> i
|
|
Fixed f -> Fixed $ replaceIn substring (start range) <$> f
|
|
Keyed k -> Keyed $ replaceIn substring (start range) <$> k
|
|
_ -> syntax
|
|
makeLeaf categories (range, substring) = Info range categories :< Leaf substring
|