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{-# LANGUAGE OverloadedRecordDot #-}
{-# LANGUAGE OverloadedStrings #-}
module History (getIssues, listIssues) where
import Control.Exception (Exception, catch, handle, throw)
import Data.Aeson (eitherDecode)
import Data.Binary (Binary, decodeFile, encodeFile)
import Data.ByteString.Lazy.Char8 qualified as L8
import Data.Function ((&))
import Data.List (intercalate)
import Data.Maybe (catMaybes, mapMaybe)
import Data.String (fromString)
import Data.Text (Text, lines, unpack)
import Data.Text.Encoding (decodeUtf8)
import Issue (Issue (..), fromMatch, id)
import Issue.Filter (Filter, applyFilter)
import Parallel (parMapM)
import Process (quote, sh, sh_)
import System.Directory (createDirectoryIfMissing, doesFileExist, getCurrentDirectory)
import System.Exit (ExitCode (ExitFailure), exitWith)
import System.FilePath (takeExtension, (</>))
import System.IO.Temp (withSystemTempDirectory)
import System.Process.Typed (setWorkingDir)
import Text.Printf (printf)
import TreeGrepper.Match qualified as G
import TreeGrepper.Result qualified as G
import Prelude hiding (id, lines)
import Prelude qualified as Prelude
listIssues :: [Filter] -> [FilePath] -> IO [Issue]
listIssues filters paths = do
commitHashes <- getCommitHashes
issuesWorkingTreeAll <- getIssuesWorkingTreeAll paths
historicalIssues <- fmap concat $ parMapM (\hash -> cached hash (\_ -> getIssuesCommitChanged hash)) commitHashes
let currentIssuesFiltered = filter (applyFilter filters) issuesWorkingTreeAll
pure $ map (fixProvenance historicalIssues) currentIssuesFiltered
getCommitHashes :: IO [Text]
getCommitHashes =
fmap (lines . decodeUtf8 . L8.toStrict) $ sh "git log --format=%H"
fixProvenance :: [Issue] -> Issue -> Issue
fixProvenance historicalIssues =
merge . pick historicalIssues
pick :: [Issue] -> Issue -> (Issue, [Issue])
pick issues issue =
(issue, filter (isSameIssue) issues)
where
isSameIssue otherIssue =
id otherIssue == id issue
merge :: (Issue, [Issue]) -> Issue
merge (issue, issues) =
case (mapMaybe provenance (reverse issues)) of
[] ->
issue
provenance : _ ->
issue {provenance = Just provenance}
-- | Gets issues in all files in your current [working
-- - tree](https://git-scm.com/docs/gitglossary#Documentation/gitglossary.txt-aiddefworkingtreeaworkingtree)
getIssuesWorkingTreeAll :: [FilePath] -> IO [Issue]
getIssuesWorkingTreeAll paths = do
cwd <- getCurrentDirectory
files <- getFilesAllIn cwd paths
concat <$> catch (getIssuesPar cwd files) dieOfInvalidTreeGrepperResult
-- | Given the hash of a commit, get all issues in all files at the
-- [tree](https://git-scm.com/docs/gitglossary#Documentation/gitglossary.txt-aiddeftreeatree)
-- of this commit.
getIssuesCommitAll :: Text -> IO [Issue]
getIssuesCommitAll hash = do
withSystemTempDirectory "history" $ \tmp -> do
cwd <- do
let cwd = tmp </> unpack hash
sh_ $ fromString $ printf "git worktree add --detach %s %s" (quote cwd) (quote $ unpack hash)
pure cwd
files <- getFilesAll cwd
concat <$> catch (getIssuesPar cwd files) (dieOfInvalidTreeGrepperResult)
-- | Given the hash of a commit, get all issues in the files which have
-- been changed by this commit.
getIssuesCommitChanged :: Text -> IO [Issue]
getIssuesCommitChanged hash = do
withSystemTempDirectory "history" $ \tmp -> do
cwd <- do
let cwd = tmp </> unpack hash
sh_ $ fromString $ printf "git worktree add --detach %s %s" (quote cwd) (quote $ unpack hash)
pure cwd
files <- getFilesChanged cwd
concat <$> catch (getIssuesPar cwd files) (dieOfInvalidTreeGrepperResult)
getFilesAll :: FilePath -> IO [FilePath]
getFilesAll cwd =
Prelude.lines . L8.unpack
<$> sh ("git ls-files --cached --exclude-standard --other" & setWorkingDir cwd)
getFilesAllIn :: FilePath -> [String] -> IO [FilePath]
getFilesAllIn cwd paths =
Prelude.lines . L8.unpack
<$> sh
( fromString
( (printf "git ls-files --cached --exclude-standard --other%s")
( case paths of
[] -> ""
_ -> " -- " ++ intercalate " " (map quote paths)
)
)
& setWorkingDir cwd
)
getFilesChanged :: FilePath -> IO [FilePath]
getFilesChanged cwd =
Prelude.lines . L8.unpack
<$> sh ("git show -p --name-only --format=''" & setWorkingDir cwd)
-- | Get all issues in the given directory and files. Runs
-- parallelized.
getIssuesPar :: FilePath -> [FilePath] -> IO [[Issue]]
getIssuesPar cwd files =
parMapM (handle forgetGetIssuesExceptions . getIssues cwd) files
data UnknownFileExtension = UnknownFileExtension
{ extension :: String
}
deriving (Show)
instance Exception UnknownFileExtension
forgetGetIssuesExceptions :: UnknownFileExtension -> IO [a]
forgetGetIssuesExceptions _ = pure []
data InvalidTreeGrepperResult = InvalidTreeGrepperResult
{ error :: String
}
deriving (Show)
instance Exception InvalidTreeGrepperResult
dieOfInvalidTreeGrepperResult :: InvalidTreeGrepperResult -> IO a
dieOfInvalidTreeGrepperResult (InvalidTreeGrepperResult e) =
die e
-- | Get all issues in the given directory and file.
getIssues :: FilePath -> FilePath -> IO [Issue]
getIssues cwd filename = do
let extension = takeExtension filename
treeGrepperLanguage =
-- TODO Add support for all tree-grepper supported files
--
-- tree-grepper supported files can be listed through `tree-grepper
-- --languages`.
case extension of
".elm" -> "elm"
".hs" -> "haskell"
".nix" -> "nix"
".sh" -> "sh"
_ -> throw (UnknownFileExtension extension)
treeGrepperQuery =
case extension of
".elm" -> "([(line_comment) (block_comment)])"
".hs" -> "(comment)"
".nix" -> "(comment)"
".sh" -> "(comment)"
_ -> throw (UnknownFileExtension extension)
decode raw =
case eitherDecode raw of
Left e -> throw (InvalidTreeGrepperResult e)
Right treeGrepperResult -> treeGrepperResult
matches <-
concatMap (\result -> map ((,) result) result.matches)
. map fixTreeGrepper
. decode
<$> sh
( fromString
( printf
"tree-grepper --query %s %s --format json %s"
(quote treeGrepperLanguage)
(quote treeGrepperQuery)
(quote filename)
)
& setWorkingDir cwd
)
catMaybes <$> mapM (uncurry (fromMatch cwd)) matches
fixTreeGrepper :: G.Result -> G.Result
fixTreeGrepper treeGrepperResult =
treeGrepperResult {G.matches = G.merge treeGrepperResult.matches}
cached :: Binary a => Text -> (Text -> IO a) -> IO a
cached hash func = do
cwd <- getCurrentDirectory
createDirectoryIfMissing True (cwd ++ "/.anissue")
let file = (cwd ++ "/.anissue/" ++ unpack hash)
fileExists <- doesFileExist file
if fileExists
then decodeFile file
else do
blob <- func hash
encodeFile file blob
pure blob
die :: String -> IO a
die s = do
printf "error: %s\n" s
exitWith (ExitFailure 1)
|
