[gtk+] gtk/gentypefuncs.py: Open files in utf-8 encoding

[Chun-wei Fan <fanchunwei src gnome org>]

commit 0332dbca94c157034588468e2655746818d4bbf3
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Tue Aug 1 16:44:20 2017 +0800

    gtk/gentypefuncs.py: Open files in utf-8 encoding
    
    On Python-3.x, we need to set the encoding when opening files, when this
    script is run, as it might contain items that are not supported by the
    system's locale (for example, non-English Windows).  So, we use a
    wrapper to set the encoding on Python 3.x, but open the file as we did
    when using Python 2.x, since file encodings are not supported there.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=785210

 gtk/gentypefuncs.py |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gentypefuncs.py b/gtk/gentypefuncs.py
index 0e42002..b17b723 100644
--- a/gtk/gentypefuncs.py
+++ b/gtk/gentypefuncs.py
@@ -17,9 +17,15 @@ if debug: print ('Output file: ', out_file)
 
 if debug: print (len(in_files), 'input files')
 
+def open_file(filename, mode):
+    if sys.version_info[0] < 3:
+        return open(filename, mode=mode)
+    else:
+        return open(filename, mode=mode, encoding='utf-8')
+
 for filename in in_files:
   if debug: print ('Input file: ', filename)
-  with open(filename, "r") as f:
+  with open_file(filename, "r") as f:
     for line in f:
       line = line.rstrip('\n').rstrip('\r')
       # print line