From a0455b95354493f261f121d7f659b8abffce0140 Mon Sep 17 00:00:00 2001
From: Roderic Page <r.page@bio.gla.ac.uk>
Date: Sat, 17 Dec 2016 15:39:00 +0000
Subject: [PATCH] Detect namespace version rather than hard code it.

---
 history.php | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/history.php b/history.php
index 2102f9d..55c3706 100644
--- a/history.php
+++ b/history.php
@@ -56,11 +56,20 @@ function distanceOfTimeInWords($from_time, $to_time = 0, $include_seconds = fals
 // Common point of failure is an updated wiki namespace
 function xml_edits($xml, $limit = 0)
 {
+	// detect namespace
+	
+	$namespace = 'http://www.mediawiki.org/xml/export-0.8/';
+	
+	if (preg_match('/xmlns="(?<namespace>http:\/\/www.mediawiki.org\/xml\/export-(\d+(\.\d+))\/)"/U', $xml, $m))
+	{
+		$namespace = $m['namespace'];
+	}
+
 	$dom= new DOMDocument;
 	$dom->loadXML($xml);
 	$xpath = new DOMXPath($dom);
 	// Add namespaces to XPath to ensure our queries work
-	$xpath->registerNamespace("wiki", "http://www.mediawiki.org/xml/export-0.8/");
+	$xpath->registerNamespace("wiki", $namespace);
 	$xpath->registerNamespace("xsi", "http://www.w3.org/2001/XMLSchema-instance");
 	$nodeCollection = $xpath->query ("//wiki:revision");