From 0f161e01367b0909b83e878ca282588823976056 Mon Sep 17 00:00:00 2001
From: Adrien Destugues <pulkomandy@pulkomandy.tk>
Date: Mon, 11 May 2020 11:25:08 +0200
Subject: [PATCH] Improve SVG sniffing

The way this rule works is it check two things:
- The document starts with "<?xml", "<svg", or "<DOCTYPE"
- In the first 512 bytes there is either an SVG or DOCTYPE SVG opening
  tag (both casze insensitive)

This should allow to correctly detect most SVG files, all while not
misdetecting other things (for example xhtml with a nested SVG) too
easily. It's difficult to be completely accurate with just a sniffing
rule.

Change-Id: I66d6e21ff694c4a6349989db2685dffb44ef5767
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2681
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
---
 src/data/mime_db/image/svg+xml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/data/mime_db/image/svg+xml b/src/data/mime_db/image/svg+xml
index cd5435e768..c52f8fe381 100644
--- a/src/data/mime_db/image/svg+xml
+++ b/src/data/mime_db/image/svg+xml
@@ -6,7 +6,7 @@ resource(1, "META:TYPE") "image/svg+xml";
 resource(2, "META:S:DESC") #'MSDC' "SVG image";
 
 resource(3, "META:SNIFF_RULE") #'CSTR' array {
-	"0.60 (\"<?xml\" | \"<svg\") [0:511] ( -i \"<SVG\" | \"<!DOCTYPE SVG\" )"
+	"0.60 (\"<?xml\" | \"<svg\" | \"<DOCTYPE\") [0:511] ( -i \"<SVG\" | \"<!DOCTYPE SVG\" )"
 };
 
 resource(4, "META:PREF_APP") #'MSIG' "application/x-vnd.Haiku-WebPositive";