Merge tag '1.20200102'

tagging package git-repair version 1.20200102

1 files changed, 43 insertions, 0 deletions

diff --git a/Utility/Env/Set.hs b/Utility/Env/Set.hs
new file mode 100644
index 0000000..f14674c
--- /dev/null
+++ b/Utility/Env/Set.hs
@@ -0,0 +1,43 @@
+{- portable environment variables
+ -
+ - Copyright 2013 Joey Hess <id@joeyh.name>
+ -
+ - License: BSD-2-clause
+ -}
+
+{-# LANGUAGE CPP #-}
+
+module Utility.Env.Set (
+	setEnv,
+	unsetEnv,
+) where
+
+#ifdef mingw32_HOST_OS
+import qualified System.SetEnv
+import Utility.Env
+#else
+import qualified System.Posix.Env as PE
+#endif
+
+{- Sets an environment variable. To overwrite an existing variable,
+ - overwrite must be True.
+ -
+ - On Windows, setting a variable to "" unsets it. -}
+setEnv :: String -> String -> Bool -> IO ()
+#ifndef mingw32_HOST_OS
+setEnv var val overwrite = PE.setEnv var val overwrite
+#else
+setEnv var val True = System.SetEnv.setEnv var val
+setEnv var val False = do
+	r <- getEnv var
+	case r of
+		Nothing -> setEnv var val True
+		Just _ -> return ()
+#endif
+
+unsetEnv :: String -> IO ()
+#ifndef mingw32_HOST_OS
+unsetEnv = PE.unsetEnv
+#else
+unsetEnv = System.SetEnv.unsetEnv
+#endif