Namespace declaration processed first. Issue 22

src/AngleSharp.Xml.Tests/Parser/XmlParsing.cs

@@ -1,3 +1,7 @@
+using System.Linq;
+using System.Threading.Tasks;
+using AngleSharp.Dom;
+
 namespace AngleSharp.Xml.Tests.Parser
 {
     using AngleSharp.Dom;
@@ -149,7 +153,16 @@ public void ParseInvalidXmlShouldNotThrowWhenSuppressingErrors_Issue14()
         }
 
         [Test]
-        public void XmlPrefixedAttributesShouldLocateXmlNamespaceWithoutDeclaration()
+        public async Task NamespaceDeclarationsInAttributesShouldNotCareAboutOrdering()
+        {
+            var document = @"<xml p6:type=""noteref"" xmlns:p6=""http://www.idpf.org/2007/ops"" >1</xml>"
+                .ToXmlDocument();
+            var root = document.DocumentElement;
+            Assert.AreEqual("http://www.idpf.org/2007/ops",
+                root.Attributes.First(att => att.LocalName == "type").NamespaceUri);
+
+        [Test]
+        public async Task XmlPrefixedAttributesShouldLocateXmlNamespaceWithoutDeclaration()
         {
             var document = @"<xml xml:lang=""en""></xml>".ToXmlDocument();
             var root = document.DocumentElement;

src/AngleSharp.Xml/Parser/XmlDomBuilder.cs

@@ -1,3 +1,5 @@
+using System.Linq;
+
 namespace AngleSharp.Xml.Parser
 {
     using AngleSharp.Dom;
@@ -274,9 +276,23 @@ private void InBody(XmlToken token)
                     var element = CreateElement(tagToken.Name, tagToken.IsSelfClosing);
                     CurrentNode.AppendChild(element);
 
-                    for (var i = 0; i < tagToken.Attributes.Count; i++)
+                    var namespaceDeclarations = tagToken.Attributes
+                        .Where(attr => attr.Key.StartsWith("xmlns"))
+                        .ToList();
+                    var otherAttributes = tagToken.Attributes
+                        .Where(attr => !attr.Key.StartsWith("xmlns"))
+                        .ToList();
+
+                    for (var i = 0; i < namespaceDeclarations.Count; i++)
+                    {
+                        var attr = namespaceDeclarations[i];
+                        var item = CreateAttribute(attr.Key, attr.Value.Trim());
+                        element.AddAttribute(item);
+                    }
+
+                    for (var i = 0; i < otherAttributes.Count; i++)
                     {
-                        var attr = tagToken.Attributes[i];
+                        var attr = otherAttributes[i];
                         var item = CreateAttribute(attr.Key, attr.Value.Trim());
                         element.AddAttribute(item);
                     }