From 77171a0d1844cd753800c94279efa6de2a779c5c Mon Sep 17 00:00:00 2001
From: Taka <taka@vm-linux-dev>
Date: Tue, 15 Dec 2020 10:12:37 +1100
Subject: [PATCH] Only translate relative image URL's in Chapter H notes.

---
 vasl_templates/webapp/vo_notes.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/vasl_templates/webapp/vo_notes.py b/vasl_templates/webapp/vo_notes.py
index fd23a96..f0a7b61 100644
--- a/vasl_templates/webapp/vo_notes.py
+++ b/vasl_templates/webapp/vo_notes.py
@@ -259,7 +259,10 @@ def _fixup_urls( html, url_stem ):
     """Fixup URL's to Chapter H files."""
     matches = list( re.finditer( r"<img [^>]*src=(['\"])(.*?)\1", html ) )
     for mo in reversed(matches):
-        html = html[:mo.start(2)] + url_stem+ html[mo.start(2):]
+        before, after = html[:mo.start(2)], html[mo.start(2):]
+        if after.startswith( ( "http://", "https://", "file://" ) ):
+            continue
+        html = before + url_stem + after
     return html
 
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