move main code to a function

drive-download

@@ -37,24 +37,27 @@ def folder_id(folder_name):
     return file1['id']
 
 
-read_seen()
+def main():
+    global seen, drive
 
-gauth = GoogleAuth(settings_file=os.path.expanduser('~/.config/drive-download/settings.yaml'))
-gauth.CommandLineAuth()
-drive = GoogleDrive(gauth)
+    read_seen()
 
-file_query = "'%s' in parents and trashed=false" % folder_id(FOLDER)
-file_list = drive.ListFile({'q': file_query}).GetList()
+    gauth = GoogleAuth(settings_file=os.path.expanduser('~/.config/drive-download/settings.yaml'))
+    gauth.CommandLineAuth()
+    drive = GoogleDrive(gauth)
 
-file_names = [f['title'] for f in file_list]
-file_names_dupes = [f for f, count in collections.Counter(file_names).items() if count > 1]
-if len(file_names_dupes) > 0:
+    file_query = "'%s' in parents and trashed=false" % folder_id(FOLDER)
+    file_list = drive.ListFile({'q': file_query}).GetList()
+
+    file_names = [f['title'] for f in file_list]
+    file_names_dupes = [f for f, count in collections.Counter(file_names).items() if count > 1]
+    if len(file_names_dupes) > 0:
         print('Duplicate filenames on Drive!')
         for fn in sorted(file_names_dupes):
-        print(fn)
+            print(shlex.quote(fn))
         sys.exit(1)
 
-for file1 in file_list:
+    for file1 in file_list:
         if file1['mimeType'] == 'application/vnd.google-apps.folder':
             continue
         if file1['id'] in seen:  # XXX could update the file if it needs updating
@@ -70,4 +73,7 @@ for file1 in file_list:
             print("{} exists locally!".format(shlex.quote(local_filename)))
             sys.exit(2)
 
+
+main()
+
 # vim:tw=100: