Add get_free_space() to core

deluge/core/core.py

@@ -803,3 +803,19 @@ class Core(component.Component):
             return 0
         else:
             return int(status)
+
+    @export
+    def get_free_space(self, path):
+        """
+        Returns the number of free bytes at path
+        
+        :param path: the path to check free space at
+        :type path: string
+        
+        :returns: the number of free bytes at path
+        :rtype: int
+        
+        :raises InvalidPathError: if the path is invalid
+        
+        """
+        return deluge.common.free_space(path)

deluge/error.py

@@ -35,10 +35,7 @@
 
 
 class DelugeError(Exception):
-    def __init__(self, value):
-        self.value = value
-    def __str__(self):
-        return repr(self.value)
+    pass
 
 class NoCoreError(DelugeError):
     pass
@@ -48,3 +45,6 @@ class DaemonRunningError(DelugeError):
 
 class InvalidTorrentError(DelugeError):
     pass
+
+class InvalidPathError(DelugeError):
+    pass

tests/test_core.py

@@ -11,6 +11,7 @@ import common
 from deluge.core.rpcserver import RPCServer
 from deluge.core.core import Core
 import deluge.component as component
+import deluge.error
 
 class CoreTestCase(unittest.TestCase):
     def setUp(self):
@@ -75,7 +76,6 @@ class CoreTestCase(unittest.TestCase):
         import base64
         torrent_id = self.core.add_torrent_file(filename, base64.encodestring(open(filename).read()), options)
         
-        import deluge.error
         self.assertRaises(deluge.error.InvalidTorrentError, self.core.remove_torrent, "torrentidthatdoesntexist", True)
         
         ret = self.core.remove_torrent(torrent_id, True)
@@ -94,3 +94,10 @@ class CoreTestCase(unittest.TestCase):
         self.assertEquals(status["write_hit_ratio"], 0.0)
         self.assertEquals(status["read_hit_ratio"], 0.0)
 
+    def test_get_free_space(self):
+        space = self.core.get_free_space(".")
+        self.assertTrue(type(space) == int)
+        self.assertTrue(space >= 0)
+        self.assertRaises(deluge.error.InvalidPathError, self.core.get_free_space, "/someinvalidpath")
+        
+