[glib] glib-mkenums: Python2: use locale encoding when redirecting stdout

[Christoph Reiter <creiter src gnome org>]

commit 867b5e6f902e945e8a02a3d2d35d698e19f8f892
Author: Christoph Reiter <creiter src gnome org>
Date:   Wed Jul 26 11:26:00 2017 +0200

    glib-mkenums: Python2: use locale encoding when redirecting stdout
    
    In case of Python 2 and stdout being redirected to a file, sys.stdout.encoding
    is None and it defaults ASCII for encoding text.
    
    To match the behaviour of Python 3, which uses the locale encoding also when
    redirecting to a file, wrap sys.stdout with a StreamWriter using the
    locale encoding.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=785113

 gobject/glib-mkenums.in |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)
---
diff --git a/gobject/glib-mkenums.in b/gobject/glib-mkenums.in
index fccc000..9fae3a8 100755
--- a/gobject/glib-mkenums.in
+++ b/gobject/glib-mkenums.in
@@ -16,6 +16,8 @@ import sys
 import tempfile
 import io
 import errno
+import codecs
+import locale
 
 VERSION_STR = '''glib-mkenums version @VERSION@
 glib-genmarshal comes with ABSOLUTELY NO WARRANTY.
@@ -24,7 +26,13 @@ the GNU General Public License which can be found in the
 GLib source package. Sources, examples and contact
 information are available at http://www.gtk.org'''
 
-output_stream = sys.stdout
+# Python 2 defaults to ASCII in case stdout is redirected.
+# This should make it match Python 3, which uses the locale encoding.
+if sys.stdout.encoding is None:
+    output_stream = codecs.getwriter(
+        locale.getpreferredencoding())(sys.stdout)
+else:
+    output_stream = sys.stdout
 
 # pylint: disable=too-few-public-methods
 class Color: