[gnome-themes-standard] Make symbolic icons work with the current rsvg

[William Jon McCann <mccann src gnome org>]

commit 1209da6963ebd054f76cafdba88118e25b2d016c
Author: William Jon McCann <william jon mccann gmail com>
Date:   Mon May 5 11:01:43 2014 -0400

    Make symbolic icons work with the current rsvg
    
    The rsvg loader now restricts what external files it will
    allow to load from an svg. Thus our xinclude trick doesn't work
    anymore. To work around that, embed the payload in a  data: uri.
    This is somewhat ugly, but it is what GTK+ does.

 themes/HighContrast/create-highcontrast.c |   16 +++++++++++-----
 1 files changed, 11 insertions(+), 5 deletions(-)
---
diff --git a/themes/HighContrast/create-highcontrast.c b/themes/HighContrast/create-highcontrast.c
index 9249096..932419b 100644
--- a/themes/HighContrast/create-highcontrast.c
+++ b/themes/HighContrast/create-highcontrast.c
@@ -89,11 +89,18 @@ static GdkPixbuf *
 get_recolored_svg (GFile *file,
                    gint icon_size)
 {
-  gchar *data, *str;
+  gchar *data;
   GdkPixbuf *pixbuf;
   GInputStream *stream;
+  gchar *file_data, *escaped_file_data;
+  gsize file_len;
+
+  if (!g_file_load_contents (file, NULL, &file_data, &file_len, NULL, NULL))
+    return NULL;
+
+  escaped_file_data = g_markup_escape_text (file_data, file_len);
+  g_free (file_data);
 
-  str = g_file_get_path (file);
   data = g_strconcat ("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n"
                       "<svg version=\"1.1\"\n"
                       "     xmlns=\"http://www.w3.org/2000/svg\"\n";
@@ -114,16 +121,15 @@ get_recolored_svg (GFile *file,
                       "      fill: #4e9a06 !important;\n"
                       "    }\n"
                       "  </style>\n"
-                      "  <xi:include href=\"", str, "\"/>\n"
+                      "  <xi:include href=\"data:text/xml,", escaped_file_data, "\"/>\n"
                       "</svg>",
                       NULL);
-
+  g_free (escaped_file_data);
   stream = g_memory_input_stream_new_from_data (data, -1, g_free);
   pixbuf = gdk_pixbuf_new_from_stream_at_scale (stream,
                                                 icon_size, icon_size,
                                                 TRUE, NULL, NULL);
   g_object_unref (stream);
-  g_free (str);
 
   return pixbuf;
 }