add Geef.Config module for Elixir

lib/geef.ex

@@ -2,17 +2,20 @@ defmodule Geef do
 
   defmacro __using__(_) do
     quote do
-      alias Geef.Repository
+      alias Geef.Blob
+      alias Geef.Commit
+      alias Geef.Config
+      alias Geef.Index
+      alias Geef.Index.Tree
+      alias Geef.Object
       alias Geef.Odb
       alias Geef.Oid
       alias Geef.Reference
-      alias Geef.Object
-      alias Geef.Commit
-      alias Geef.Tree
-      alias Geef.TreeEntry
-      alias Geef.Blob
-      alias Geef.Tag
+      alias Geef.Repository
       alias Geef.Signature
+      alias Geef.Tree
+      alias Geef.Tag
+      alias Geef.TreeEntry
     end
   end
 

lib/geef/config.ex

@@ -0,0 +1,25 @@
+defmodule Geef.Config do
+  import Geef
+  alias Geef.Repository
+
+  def stop(config), do: :geef_config.stop(config)
+
+  def open(repo) when is_pid(repo), do: Repository.config(repo)
+  def open(path), do: :geef_config.open(path)
+  def open!(arg), do: open(arg) |> assert_ok
+
+  def set(config, key, value) do
+    :geef_config.set(config, make_config_key(key), value)
+  end
+
+  def get_bool(config, key) do
+    :geef_config.get_bool(config, make_config_key(key))
+  end
+
+  def get_string(config, key) do
+    :geef_config.get_string(config, make_config_key(key))
+  end
+
+  defp make_config_key(key) when is_binary(key), do: String.to_char_list(key)
+  defp make_config_key(key), do: key
+end

lib/geef/repository.ex

@@ -15,7 +15,9 @@ defmodule Geef.Repository do
   def discover(path), do: :geef_repo.discover(path)
 
   def bare?(repo), do: :geef_repo.is_bare(repo)
+  def gitdir(repo), do: :geef_repo.path(repo)
   def workdir(repo), do: :geef_repo.workdir(repo)
+  def config(repo), do: :geef_repo.config(repo)
 
   def reference_names(repo), do: :geef_repo.references(repo)
 end