Add backported UTF-8 encoding patch

Fixes use of ducktype when the locale encoding is ascii, such as when
building an RPM.

mallard-ducktype-0.2-open-utf8.patch

@@ -0,0 +1,38 @@
+From ec2b427c8b9555b9fb4fa045c6cdd7a5878d9583 Mon Sep 17 00:00:00 2001
+From: David King <dking@redhat.com>
+Date: Wed, 9 Sep 2015 11:32:08 +0100
+Subject: [PATCH] Open files as UTF-8
+
+Do not rely on the platform-preferred encoding when opening files, and
+instead force UTF-8 encoding.
+
+Fixes #11
+---
+ mallard/ducktype/parser.py | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/mallard/ducktype/parser.py b/mallard/ducktype/parser.py
+index 35ea594..da73f54 100644
+--- a/mallard/ducktype/parser.py
++++ b/mallard/ducktype/parser.py
+@@ -169,7 +169,7 @@ class Node:
+             fd = sys.stdout
+         elif isinstance(outfile, str):
+             close = True
+-            fd = open(outfile, 'w')
++            fd = open(outfile, 'w', encoding='utf-8')
+         else:
+             fd = outfile
+         self._write_xml(fd)
+@@ -651,7 +651,7 @@ class DuckParser:
+         self._defaultid = os.path.basename(filename)
+         if self._defaultid.endswith('.duck'):
+             self._defaultid = self._defaultid[:-5]
+-        fd = open(filename)
++        fd = open(filename, encoding='utf-8')
+         for line in fd:
+             self.parse_line(line)
+         fd.close()
+-- 
+2.5.1
+

python3-mallard-ducktype.spec

@@ -2,12 +2,14 @@
 
 Name:    python3-mallard-ducktype
 Version: 0.2
-Release: 1%{?dist}
+Release: 2%{?dist}
 Summary: Parse Ducktype files and convert them to Mallard
 
 License: MIT
 URL:     https://pypi.python.org/pypi/%{srcname}
 Source0: https://pypi.python.org/packages/source/m/%{srcname}/%{srcname}-%{version}.tar.gz
+# https://github.com/projectmallard/mallard-ducktype/issues/11
+Patch0:  %{srcname}-0.2-open-utf8.patch
 
 BuildArch:     noarch
 BuildRequires: python3-devel
@@ -19,6 +21,7 @@ Parse Ducktype files and convert them to Mallard.
 %prep
 %setup -q -n %{srcname}-%{version}
 rm -rf %{srcname}-%{version}/mallard_ducktype.egg-info/
+%patch0 -p1
 
 
 %build
@@ -42,6 +45,9 @@ rm -rf %{srcname}-%{version}/mallard_ducktype.egg-info/
 
 
 %changelog
+* Wed Sep 09 2015 David King <amigadave@amigadave.com> - 0.2-2
+- Add backported UTF-8 encoding patch
+
 * Tue Sep 08 2015 David King <amigadave@amigadave.com> - 0.2-1
 - Update to 0.2