* Remove all obsolete backup files before backup

1 files changed, 12 insertions, 0 deletions

diff --git a/SoftwareProperties/aptsources.py b/SoftwareProperties/aptsources.py
index 604af097..397ebb38 100644
--- a/SoftwareProperties/aptsources.py
+++ b/SoftwareProperties/aptsources.py
@@ -314,6 +314,18 @@ class SourcesList:
   def remove(self, source_entry):
     self.list.remove(source_entry)
 
+  def clearBackup(self, backup_ext):
+    " remove backuped sources.list files based on the backup extension "
+    dir = apt_pkg.Config.FindDir("Dir::Etc")
+    file = apt_pkg.Config.Find("Dir::Etc::sourcelist")
+    if os.path.exists(dir+file+backup_ext):
+      os.remove(dir+file+backup_ext)
+    # now sources.list.d
+    partsdir = apt_pkg.Config.FindDir("Dir::Etc::sourceparts")
+    for file in glob.glob("%s/*.list" % partsdir):
+      if os.path.exists(file+backup_ext):
+        os.remove(file+backup_ext)
+
   def restoreBackup(self, backup_ext):
     " restore sources.list files based on the backup extension "
     dir = apt_pkg.Config.FindDir("Dir::Etc")