diff options
Diffstat (limited to 'Git/Branch.hs')
| -rw-r--r-- | Git/Branch.hs | 64 |
1 files changed, 53 insertions, 11 deletions
diff --git a/Git/Branch.hs b/Git/Branch.hs index d182ceb..0b7d888 100644 --- a/Git/Branch.hs +++ b/Git/Branch.hs @@ -14,6 +14,7 @@ import Git import Git.Sha import Git.Command import qualified Git.Ref +import qualified Git.BuildVersion {- The currently checked out branch. - @@ -52,7 +53,22 @@ changed origbranch newbranch repo diffs = pipeReadStrict [ Param "log" , Param (fromRef origbranch ++ ".." ++ fromRef newbranch) - , Params "--oneline -n1" + , Param "-n1" + , Param "--pretty=%H" + ] repo + +{- Check if it's possible to fast-forward from the old + - ref to the new ref. + - + - This requires there to be a path from the old to the new. -} +fastForwardable :: Ref -> Ref -> Repo -> IO Bool +fastForwardable old new repo = not . null <$> + pipeReadStrict + [ Param "log" + , Param $ fromRef old ++ ".." ++ fromRef new + , Param "-n1" + , Param "--pretty=%H" + , Param "--ancestry-path" ] repo {- Given a set of refs that are all known to have commits not @@ -74,7 +90,7 @@ fastForward branch (first:rest) repo = where no_ff = return False do_ff to = do - run [Param "update-ref", Param $ fromRef branch, Param $ fromRef to] repo + update branch to repo return True findbest c [] = return $ Just c findbest c (r:rs) @@ -88,6 +104,31 @@ fastForward branch (first:rest) repo = (False, True) -> findbest c rs -- worse (False, False) -> findbest c rs -- same +{- The user may have set commit.gpgsign, indending all their manual + - commits to be signed. But signing automatic/background commits could + - easily lead to unwanted gpg prompts or failures. + -} +data CommitMode = ManualCommit | AutomaticCommit + deriving (Eq) + +applyCommitMode :: CommitMode -> [CommandParam] -> [CommandParam] +applyCommitMode commitmode ps + | commitmode == AutomaticCommit && not (Git.BuildVersion.older "2.0.0") = + Param "--no-gpg-sign" : ps + | otherwise = ps + +{- Commit via the usual git command. -} +commitCommand :: CommitMode -> [CommandParam] -> Repo -> IO Bool +commitCommand = commitCommand' runBool + +{- Commit will fail when the tree is clean. This suppresses that error. -} +commitQuiet :: CommitMode -> [CommandParam] -> Repo -> IO () +commitQuiet commitmode ps = void . tryIO . commitCommand' runQuiet commitmode ps + +commitCommand' :: ([CommandParam] -> Repo -> IO a) -> CommitMode -> [CommandParam] -> Repo -> IO a +commitCommand' runner commitmode ps = runner $ + Param "commit" : applyCommitMode commitmode ps + {- Commits the index into the specified branch (or other ref), - with the specified parent refs, and returns the committed sha. - @@ -97,30 +138,31 @@ fastForward branch (first:rest) repo = - Unlike git-commit, does not run any hooks, or examine the work tree - in any way. -} -commit :: Bool -> String -> Branch -> [Ref] -> Repo -> IO (Maybe Sha) -commit allowempty message branch parentrefs repo = do +commit :: CommitMode -> Bool -> String -> Branch -> [Ref] -> Repo -> IO (Maybe Sha) +commit commitmode allowempty message branch parentrefs repo = do tree <- getSha "write-tree" $ pipeReadStrict [Param "write-tree"] repo ifM (cancommit tree) ( do - sha <- getSha "commit-tree" $ pipeWriteRead - (map Param $ ["commit-tree", fromRef tree] ++ ps) - (Just $ flip hPutStr message) repo + sha <- getSha "commit-tree" $ + pipeWriteRead ([Param "commit-tree", Param (fromRef tree)] ++ ps) sendmsg repo update branch sha repo return $ Just sha , return Nothing ) where - ps = concatMap (\r -> ["-p", fromRef r]) parentrefs + ps = applyCommitMode commitmode $ + map Param $ concatMap (\r -> ["-p", fromRef r]) parentrefs cancommit tree | allowempty = return True | otherwise = case parentrefs of [p] -> maybe False (tree /=) <$> Git.Ref.tree p repo _ -> return True + sendmsg = Just $ flip hPutStr message -commitAlways :: String -> Branch -> [Ref] -> Repo -> IO Sha -commitAlways message branch parentrefs repo = fromJust - <$> commit True message branch parentrefs repo +commitAlways :: CommitMode -> String -> Branch -> [Ref] -> Repo -> IO Sha +commitAlways commitmode message branch parentrefs repo = fromJust + <$> commit commitmode True message branch parentrefs repo {- A leading + makes git-push force pushing a branch. -} forcePush :: String -> String |