From 18cd7839134fdf60ae9db6ee1099f82d3ca05ff5 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Tue, 17 Apr 2012 22:35:55 +0530
Subject: [PATCH] KF8 Output: Extract svg into flows

---
 src/calibre/ebooks/mobi/writer8/main.py | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/calibre/ebooks/mobi/writer8/main.py b/src/calibre/ebooks/mobi/writer8/main.py
index e0447da16e..532a03be69 100644
--- a/src/calibre/ebooks/mobi/writer8/main.py
+++ b/src/calibre/ebooks/mobi/writer8/main.py
@@ -36,6 +36,7 @@ class KF8Writer(object):
 
         self.replace_resource_links()
         self.extract_css_into_flows()
+        self.extract_svg_into_flows()
 
     def dup_data(self):
         ''' Duplicate data so that any changes we make to markup/CSS only
@@ -139,4 +140,20 @@ class KF8Writer(object):
             for link in elems:
                 link.set('href', 'kindle:flow:%s?mime=text/css'%idx)
 
+    def extract_svg_into_flows(self):
+        for item in self.oeb.spine:
+            root = self.data(item)
+            if not hasattr(root, 'xpath'): continue
+
+            for svg in XPath('//svg:svg')(root):
+                raw = etree.tostring(svg, encoding=unicode, with_tail=False)
+                self.flows.append(raw)
+                p = svg.getparent()
+                pos = p.index(svg)
+                img = etree.Element(XHTML('img'),
+                        src="kindle:flow:%s?mime=image/svg+xml"%to_ref(
+                            len(self.flows)))
+                p.insert(pos, img)
+                extract(svg)
+