git-sanity (empty) → 0.0.1

raw patch · 6 files changed

+351/−0 lines, 6 filesdep +Cabaldep +basedep +bytestringsetup-changed

Dependencies added: Cabal, base, bytestring, git-sanity, machines, machines-io, machines-process, process, safe, transformers

Files

• LICENSE +202/−0
• Setup.hs +2/−0
• git-sanity.cabal +44/−0
• src/Git/Sanity.hs +45/−0
• src/Git/Sanity/Internal.hs +11/−0
• src/Main.hs +47/−0

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@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain

@@ -0,0 +1,44 @@+-- Initial git-sanity.cabal generated by cabal init.  For further +-- documentation, see http://haskell.org/cabal/users-guide/++name:                git-sanity+version:             0.0.1+synopsis:            A sanity checker for your git history.+description:+  This tool allow you sanity check the history of local git repository.+  .+  A 'sane' history is one where there is no interleaved merged.+homepage:            github.com/aloiscochard/git-sanity+license:             Apache-2.0+license-file:        LICENSE+author:              Alois Cochard+maintainer:          alois.cochard@gmail.com+category:            Development+build-type:          Simple+cabal-version:       >=1.10++library+  default-language:  Haskell2010+  hs-source-dirs:    src+  ghc-options:       -fwarn-incomplete-patterns+  exposed-modules:+    Git.Sanity+    Git.Sanity.Internal+  build-depends:+      base >=4.6 && <4.8+    , bytestring+    , machines+    , machines-io+    , machines-process+    , process+    , safe+    , transformers++executable git-sanity+  default-language:    Haskell2010+  main-is:             src/Main.hs+  ghc-options:         -threaded -fwarn-incomplete-patterns+  build-depends:       +      base+    , Cabal+    , git-sanity

@@ -0,0 +1,45 @@+{-# LANGUAGE Rank2Types #-}+module Git.Sanity where++import Control.Applicative+import Control.Monad+import Control.Monad.IO.Class+import Data.ByteString.Char8 (ByteString)+import Data.Machine+import Safe+import System.Exit (ExitCode)+import System.IO.Machine (IODataMode(..), byLine)+import System.Process (CreateProcess(..), StdStream(CreatePipe), shell)+import System.Process.Machine (callProcessMachines, mStdOut)++import qualified Data.ByteString.Char8 as BS++import Git.Sanity.Internal++type Range = String+type Line = ByteString+type Hash = ByteString++analyze :: Range -> IO (ExitCode, Int)+analyze range = do+  res <- callProcessMachines byLine (gitLogParents range) (mStdOut $ report <~ filterInsane <~ slide <~ parseHashes)+  return $ length <$> res++gitLogParents :: Range -> CreateProcess+gitLogParents range = (shell $ concat ["git log ", range, " --parents | cat"]) { std_out = CreatePipe }++-- | Parse `git log --parents` command output and return a stream of commit parents hashes+parseHashes :: Process Line [Hash]+parseHashes = fmap parse $ filtered (BS.isPrefixOf prefix) where+  parse = (BS.split ' ') . BS.drop (BS.length prefix)+  prefix = BS.pack "commit "++filterInsane :: Process ([Hash], [Hash]) (Hash)+filterInsane = repeatedly f where+  f = await >>= \(xs, ys) -> if last xs == head ys then f else yield $ head xs++report :: ProcessT IO Hash ()+report = repeatedly $ do+  x <- await+  liftIO . putStrLn $ BS.unpack x+  yield ()

@@ -0,0 +1,11 @@+module Git.Sanity.Internal where++import Data.Machine++-- TODO Contribute to machine?+slide :: Process a (a, a)+slide = f Nothing where+  f Nothing   = await (\x -> f $ Just x)+  f (Just x)  = await (\y -> machine $ Yield (x, y) $ f $ Just y)+  await f = machine $ Await f Refl stopped+  machine = MachineT . return

@@ -0,0 +1,47 @@+module Main where++import Distribution.Text (display)+import Paths_git_sanity (version)+import System.Environment+import System.Exit++import Git.Sanity (analyze)++name :: String+name = "git-sanity"++help :: IO ()+help = putStrLn $+  unlines [ concat ["Usage: ", name, " [check [<revision range>]]" ]+          , "                  [--help]"+          , "                  [--version]"+          , ""+          , " <revision range>  Check only commits in the specified revision range."+          , ""+          , "When no <revision range> is specified, it defaults to HEAD (i.e. the whole history leading to the current commit)."+          , ""+          , "In order to integrate nicely as a pre-push githooks (http://git-scm.com/docs/githooks.html),"+          , "a <revision range> of 'origin/$branch..HEAD'[1] can be used to specifies all the commits reachable from the current commit (i.e. HEAD), but not from origin."+          , ""+          , "[1] Where 'branch' is a variable defined as 'branch=$(git symbolic-ref --short HEAD)'" ]++main :: IO ()+main = do+  args  <- getArgs+  run args where+    check range = do+      (exitCode, total) <- analyze range+      if total == 0 then+        exitWith exitCode+      else do+        putStrLn ""+        putStrLn $ concat [name, ": ", show total, " insane commit(s)."]+        exitFailure+    run ["check", range]  = check range+    run ["check"]         = check "HEAD"+    run ["--version"]     = putStrLn $ concat [name, ": ", display version]+    run ["--help"]        = help+    run []                = help+    run (x:_)             = do+      putStrLn $ concat [name, ": '", x,"' is not a valid command. See '", name, " --help'."]+      exitWith (ExitFailure 1)