From 7c12f0ac9224246dac308e837bccb5b2157062ee Mon Sep 17 00:00:00 2001
From: Joey Hess <id@joeyh.name>
Date: Tue, 15 Dec 2015 17:47:59 -0700
Subject: Import git-repair_1.20151215.orig.tar.xz

[dgit import orig git-repair_1.20151215.orig.tar.xz]
---
 Git/CurrentRepo.hs | 59 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 Git/CurrentRepo.hs

(limited to 'Git/CurrentRepo.hs')

diff --git a/Git/CurrentRepo.hs b/Git/CurrentRepo.hs
new file mode 100644
index 0000000..dab4ad2
--- /dev/null
+++ b/Git/CurrentRepo.hs
@@ -0,0 +1,59 @@
+{- The current git repository.
+ -
+ - Copyright 2012 Joey Hess <id@joeyh.name>
+ -
+ - Licensed under the GNU GPL version 3 or higher.
+ -}
+
+module Git.CurrentRepo where
+
+import Common
+import Git.Types
+import Git.Construct
+import qualified Git.Config
+import Utility.Env
+
+{- Gets the current git repository.
+ -
+ - Honors GIT_DIR and GIT_WORK_TREE.
+ - Both environment variables are unset, to avoid confusing other git
+ - commands that also look at them. Instead, the Git module passes
+ - --work-tree and --git-dir to git commands it runs.
+ -
+ - When GIT_WORK_TREE or core.worktree are set, changes the working
+ - directory if necessary to ensure it is within the repository's work
+ - tree. While not needed for git commands, this is useful for anything
+ - else that looks for files in the worktree.
+ -}
+get :: IO Repo
+get = do
+	gd <- pathenv "GIT_DIR"
+	r <- configure gd =<< fromCwd
+	wt <- maybe (worktree $ location r) Just <$> pathenv "GIT_WORK_TREE"
+	case wt of
+		Nothing -> return r
+		Just d -> do
+			curr <- getCurrentDirectory
+			unless (d `dirContains` curr) $
+				setCurrentDirectory d
+			return $ addworktree wt r
+  where
+	pathenv s = do
+		v <- getEnv s
+		case v of
+			Just d -> do
+				unsetEnv s
+				Just <$> absPath d
+			Nothing -> return Nothing
+
+	configure Nothing (Just r) = Git.Config.read r
+	configure (Just d) _ = do
+		absd <- absPath d
+		curr <- getCurrentDirectory
+		Git.Config.read $ newFrom $
+			Local { gitdir = absd, worktree = Just curr }
+	configure Nothing Nothing = error "Not in a git repository."
+
+	addworktree w r = changelocation r $
+		Local { gitdir = gitdir (location r), worktree = w }
+	changelocation r l = r { location = l }
-- 
cgit v1.2.3