CuraProfileWriter use SaveFile instead of streams

The SaveFile is safer since it should save the file atomically. This safety has proven important in the past so use it here too.

Contributes to issue CURA-34.

plugins/CuraProfileWriter/CuraProfileWriter.py

@@ -2,18 +2,25 @@
 # Copyright (c) 2013 David Braam
 # Uranium is released under the terms of the AGPLv3 or higher.
 
+from UM.Logger import Logger
+from UM.SaveFile import SaveFile
 from UM.Settings.Profile import Profile
 from UM.Settings.ProfileWriter import ProfileWriter
 
 ##  Writes profiles to Cura's own profile format with config files.
 class CuraProfileWriter(ProfileWriter):
-    ##  Writes a profile to the specified stream.
+    ##  Writes a profile to the specified file path.
     #
-    #   \param stream \type{IOStream} The stream to write the profile to.
-    #   \param profile \type{Profile} The profile to write to that stream.
+    #   \param path \type{string} The file to output to.
+    #   \param profile \type{Profile} The profile to write to that file.
     #   \return \code True \endcode if the writing was successful, or \code
     #   False \endcode if it wasn't.
-    def write(self, stream, profile):
+    def write(self, path, profile):
         serialised = profile.serialise()
-        stream.write(serialised)
+        try:
+            with SaveFile(path, "wt", -1, "utf-8") as f: #Open the specified file.
+                f.write(serialised)
+        except Exception as e:
+            Logger.log("e", "Failed to write profile to %s: %s", path, str(e))
+            return False
         return True