Create proxy object for libgit2 options

pygit2.settings proxies though the lower-level varargs option() via
getters and setters which provide a more natural abstraction.

pygit2/__init__.py

@@ -35,6 +35,7 @@ from _pygit2 import *
 # High level API
 from .repository import Repository
 from .version import __version__
+from .settings import Settings
 
 
 def init_repository(path, bare=False):
@@ -75,3 +76,5 @@ def clone_repository(
     _pygit2.clone_repository(
         url, path, bare, ignore_cert_errors, remote_name, checkout_branch)
     return Repository(path)
+
+settings = Settings()

pygit2/settings.py

@@ -0,0 +1,52 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright 2010-2014 The pygit2 contributors
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License, version 2,
+# as published by the Free Software Foundation.
+#
+# In addition to the permissions in the GNU General Public License,
+# the authors give you unlimited permission to link the compiled
+# version of this file into combinations with other programs,
+# and to distribute those combinations without any restriction
+# coming from the use of this file.  (The General Public License
+# restrictions do apply in other respects; for example, they cover
+# modification of the file, and distribution when not linked into
+# a combined executable.)
+#
+# This file is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; see the file COPYING.  If not, write to
+# the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+# Boston, MA 02110-1301, USA.
+
+from _pygit2 import option
+from _pygit2 import GIT_OPT_GET_SEARCH_PATH, GIT_OPT_SET_SEARCH_PATH
+from _pygit2 import GIT_OPT_GET_MWINDOW_SIZE, GIT_OPT_SET_MWINDOW_SIZE
+
+class SearchPathList(object):
+
+    def __getitem__(self, key):
+        return option(GIT_OPT_GET_SEARCH_PATH, key)
+
+    def __setitem__(self, key, value):
+        option(GIT_OPT_SET_SEARCH_PATH, key, value)
+
+class Settings(object):
+
+    __slots__ = ['mwindow_size', 'search_path']
+
+    search_path = SearchPathList()
+
+    @property
+    def mwindow_size(self):
+        return option(GIT_OPT_GET_MWINDOW_SIZE)
+
+    @mwindow_size.setter
+    def mwindow_size(self, value):
+        option(GIT_OPT_SET_MWINDOW_SIZE, value)

test/test_options.py

@@ -44,6 +44,12 @@ class OptionsTest(utils.NoRepoTestCase):
         option(GIT_OPT_SET_MWINDOW_SIZE, new_size)
         self.assertEqual(new_size, option(GIT_OPT_GET_MWINDOW_SIZE))
 
+    def test_mwindow_size_proxy(self):
+        new_size = 300 * 1024
+        pygit2.settings.mwindow_size = new_size
+
+        self.assertEqual(new_size, pygit2.settings.mwindow_size)
+
     def test_search_path(self):
         paths = [(GIT_CONFIG_LEVEL_GLOBAL, '/tmp/global'),
                  (GIT_CONFIG_LEVEL_XDG,    '/tmp/xdg'),
@@ -53,5 +59,14 @@ class OptionsTest(utils.NoRepoTestCase):
             option(GIT_OPT_SET_SEARCH_PATH, level, path)
             self.assertEqual(path, option(GIT_OPT_GET_SEARCH_PATH, level))
 
+    def test_search_path_proxy(self):
+        paths = [(GIT_CONFIG_LEVEL_GLOBAL, '/tmp2/global'),
+                 (GIT_CONFIG_LEVEL_XDG,    '/tmp2/xdg'),
+                 (GIT_CONFIG_LEVEL_SYSTEM, '/tmp2/etc')]
+
+        for level, path in paths:
+            pygit2.settings.search_path[level] = path
+            self.assertEqual(path, pygit2.settings.search_path[level])
+
 if __name__ == '__main__':
     unittest.main()