[gtk-doc] mkhtml2: Specify the line-endings and the encoding

[Stefan Sauer <stefkost src gnome org>]

commit 225e37cc0ac6061aefdcdc52b31292a28368555f
Author: LRN <lrn1986 gmail com>
Date:   Fri Mar 30 20:47:19 2018 +0200

    mkhtml2: Specify the line-endings and the encoding
    
    This is to ensure we get consistent output regardless of the platform.
    
    See https://bugzilla.gnome.org/show_bug.cgi?id=788911

 gtkdoc/mkhtml2.py |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)
---
diff --git a/gtkdoc/mkhtml2.py b/gtkdoc/mkhtml2.py
index 4f88339..5f8e7fe 100644
--- a/gtkdoc/mkhtml2.py
+++ b/gtkdoc/mkhtml2.py
@@ -1116,7 +1116,8 @@ def convert(out_dir, module, files, node):
     """
 
     logging.info('Writing: %s', node.filename)
-    with open(os.path.join(out_dir, node.filename), 'wt') as html:
+    with open(os.path.join(out_dir, node.filename), 'wt',
+              newline='\n', encoding='utf-8') as html:
         ctx = {
             'module': module,
             'files': files,
@@ -1165,7 +1166,8 @@ def create_devhelp2_refsect3_keyword(node, base_link, title, name):
 
 
 def create_devhelp2(out_dir, module, xml, files):
-    with open(os.path.join(out_dir, module + '.devhelp2'), 'wt') as idx:
+    with open(os.path.join(out_dir, module + '.devhelp2'), 'wt',
+              newline='\n', encoding='utf-8') as idx:
         bookinfo_nodes = xml.xpath('/book/bookinfo')
         title = ''
         if bookinfo_nodes is not None:
@@ -1239,7 +1241,7 @@ def main(module, index_file, out_dir, uninstalled):
     for f in glob(os.path.join(styledir, '*.png')) + [css_file]:
         shutil.copy(f, out_dir)
     css_file = os.path.join(out_dir, 'style.css')
-    with open(css_file, 'at') as css:
+    with open(css_file, 'at', newline='\n', encoding='utf-8') as css:
         css.write(HTML_FORMATTER.get_style_defs())
 
     # TODO: migrate options from fixxref