add CacheFile

setup.py

@@ -9,6 +9,6 @@ setup(name = "simplesvnbrowser",
       license = "zlib",
       packages = ["simplesvnbrowser"],
       zip_safe = False,
-
       scripts = ["bin/simple-svn-browser"],
+      install_requires = ["pyxdg"],
       )

simplesvnbrowser/cache_file.py

@@ -0,0 +1,20 @@
+import xdg.BaseDirectory
+import os
+
+class CacheFile:
+    params = None
+
+    def __init__(self):
+        if CacheFile.params is None:
+            CacheFile.params = {}
+            cfp = self.__cache_file_path()
+            if os.path.exists(cfp):
+                with open(cfp, "r") as f:
+                    cache_content = f.read()
+                exec(cache_content, CacheFile.params)
+
+    def __cache_dir(self):
+        return xdg.BaseDirectory.save_cache_path("simple-svn-browser")
+
+    def __cache_file_path(self):
+        return os.path.join(self.__cache_dir(), "settings")

simplesvnbrowser/main_window.py

@@ -3,11 +3,14 @@ gi.require_version("Gtk", "3.0")
 from gi.repository import Gtk
 from .version import VERSION
 from .run_svn import run_svn
+from .cache_file import CacheFile
 
 class MainWindow(Gtk.Window):
     def __init__(self, url):
         super().__init__(title = "Simple SVN Browser v%s" % VERSION)
 
+        self.cache_file = CacheFile()
+
         top_hbox = Gtk.Box()
         address_entry = Gtk.Entry(text = url)
         go_button = Gtk.Button(label = "Go")