Added ApplicationData class and made resource paths unicode friendly

blink/resources.py

@@ -3,22 +3,45 @@
 
 """Provide access to Blink's resources"""
 
-__all__ = ['Resources']
+__all__ = ['ApplicationData', 'Resources']
 
 import os
+import platform
 import sys
 
 from blink.util import classproperty
 
 
-class DirectoryContextManager(str):
+class DirectoryContextManager(unicode):
     def __enter__(self):
-        self.directory = os.getcwd()
+        self.directory = os.getcwdu()
         os.chdir(self)
     def __exit__(self, type, value, traceback):
         os.chdir(self.directory)
 
 
+class ApplicationData(object):
+    """Provide access to user data"""
+
+    _cached_directory = None
+
+    @classproperty
+    def directory(cls):
+        if cls._cached_directory is None:
+            if platform.system() == 'Darwin':
+                from Foundation import NSApplicationSupportDirectory, NSSearchPathForDirectoriesInDomains, NSUserDomainMask
+                cls._cached_directory = NSSearchPathForDirectoriesInDomains(NSApplicationSupportDirectory, NSUserDomainMask, True)[0]
+            elif platform.system() == 'Windows':
+                cls._cached_directory = os.path.join(os.environ['APPDATA'], 'Blink').decode(sys.getfilesystemencoding())
+            else:
+                cls._cached_directory = os.path.expanduser('~/.blink').decode(sys.getfilesystemencoding())
+        return DirectoryContextManager(cls._cached_directory)
+
+    @classmethod
+    def get(cls, resource):
+        return os.path.join(cls.directory, resource)
+
+
 class Resources(object):
     """Provide access to Blink's resources"""
 
@@ -37,9 +60,9 @@ class Resources(object):
                 else:
                     application_directory = binary_directory
             if os.path.exists(os.path.join(application_directory, 'resources', 'blink.ui')):
-                cls._cached_directory = os.path.join(application_directory, 'resources')
+                cls._cached_directory = os.path.join(application_directory, 'resources').decode(sys.getfilesystemencoding())
             else:
-                cls._cached_directory = os.path.join(application_directory, 'share', 'blink')
+                cls._cached_directory = os.path.join(application_directory, 'share', 'blink').decode(sys.getfilesystemencoding())
         return DirectoryContextManager(cls._cached_directory)
 
     @classmethod