Fix file resolution when running XSLTs.

src/AddIns/DisplayBindings/XmlEditor/Project/Src/RunXslTransformCommand.cs

@@ -58,7 +58,7 @@ namespace ICSharpCode.XmlEditor
 				
 				if (xmlView.StylesheetFileName != null) {
 					try {
-						xmlView.RunXslTransform(GetStylesheetContent(xmlView.StylesheetFileName));
+						xmlView.RunXslTransform(GetStylesheetContent(xmlView.StylesheetFileName), xmlView.StylesheetFileName);
 					} catch (Exception ex) {
 						MessageService.ShowException(ex);
 					}

src/AddIns/DisplayBindings/XmlEditor/Project/Src/XmlView.cs

@@ -461,7 +461,7 @@ namespace ICSharpCode.XmlEditor
 		/// <summary>
 		/// Applys the stylesheet to the xml and displays the resulting output.
 		/// </summary>
-		public void RunXslTransform(string xsl)
+		public void RunXslTransform(string xsl, string transformFileName)
 		{
 			try {
 				SD.Workbench.GetPad(typeof(CompilerMessageView)).BringPadToFront();
@@ -472,9 +472,9 @@ namespace ICSharpCode.XmlEditor
 				if (editor == null) return;
 				
 				if (IsWellFormed) {
-					if (IsValidXsl(xsl)) {
+					if (IsValidXsl(xsl, transformFileName)) {
 						try {
-							string transformedXml = Transform(editor.Document.Text, xsl);
+							string transformedXml = Transform(editor.Document.Text, xsl, transformFileName);
 							ShowTransformOutput(transformedXml);
 						} catch (XsltException ex) {
 							AddTask(GetFileNameFromInnerException(ex, StylesheetFileName), GetInnerExceptionErrorMessage(ex), ex.LineNumber, ex.LinePosition, TaskType.Error);
@@ -507,7 +507,7 @@ namespace ICSharpCode.XmlEditor
 		/// <param name="input">The input xml to transform.</param>
 		/// <param name="transform">The transform xml.</param>
 		/// <returns>The output of the transform.</returns>
-		static string Transform(string input, string transform)
+		static string Transform(string input, string transform, string transformFileName)
 		{
 			StringReader inputString = new StringReader(input);
 			XmlTextReader sourceDocument = new XmlTextReader(inputString);
@@ -516,7 +516,7 @@ namespace ICSharpCode.XmlEditor
 			XPathDocument transformDocument = new XPathDocument(transformString);
 
 			XslCompiledTransform xslTransform = new XslCompiledTransform();
-			xslTransform.Load(transformDocument, XsltSettings.TrustedXslt, new XmlUrlResolver());
+			xslTransform.Load(transformDocument, XsltSettings.TrustedXslt, new XslTransformUrlResolver(transformFileName));
 			
 			MemoryStream outputStream = new MemoryStream();
 			XmlTextWriter writer = new XmlTextWriter(outputStream, Encoding.UTF8);
@@ -531,7 +531,7 @@ namespace ICSharpCode.XmlEditor
 		/// <summary>
 		/// Validates the given xsl string,.
 		/// </summary>
-		bool IsValidXsl(string xml)
+		bool IsValidXsl(string xml, string transformFileName)
 		{
 			try	{
 				SD.Workbench.GetPad(typeof(CompilerMessageView)).BringPadToFront();
@@ -540,13 +540,13 @@ namespace ICSharpCode.XmlEditor
 				XPathDocument doc = new XPathDocument(reader);
 
 				XslCompiledTransform xslTransform = new XslCompiledTransform();
-				xslTransform.Load(doc, XsltSettings.Default, new XmlUrlResolver());
+				xslTransform.Load(doc, XsltSettings.Default, new XslTransformUrlResolver(transformFileName));
 
 				return true;
 			} catch(XsltCompileException ex) {
 				AddTask(StylesheetFileName, GetInnerExceptionErrorMessage(ex), ex.LineNumber, ex.LinePosition, TaskType.Error);
 			} catch(XsltException ex) {
-				AddTask(StylesheetFileName, ex.Message, ex.LinePosition, ex.LineNumber, TaskType.Error);
+				AddTask(StylesheetFileName, GetInnerExceptionErrorMessage(ex), ex.LinePosition, ex.LineNumber, TaskType.Error);
 			} catch(XmlException ex) {
 				AddTask(StylesheetFileName, ex.Message, ex.LinePosition, ex.LineNumber, TaskType.Error);
 			}

src/AddIns/DisplayBindings/XmlEditor/Project/Src/XslTransformUrlResolver.cs

@@ -0,0 +1,42 @@
+// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy of this
+// software and associated documentation files (the "Software"), to deal in the Software
+// without restriction, including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
+// to whom the Software is furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in all copies or
+// substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+using System;
+using System.IO;
+using System.Xml;
+
+namespace ICSharpCode.XmlEditor
+{
+	public class XslTransformUrlResolver : XmlUrlResolver
+	{
+		readonly Uri baseDirectory;
+		
+		public XslTransformUrlResolver(string fileName)
+		{
+			this.baseDirectory = new Uri(Path.GetDirectoryName(fileName) + Path.DirectorySeparatorChar, UriKind.Absolute);
+		}
+		
+		public override Uri ResolveUri(Uri baseUri, string relativeUri)
+		{
+			if (baseUri != null) {
+				return base.ResolveUri(baseUri, relativeUri);
+			}
+			return base.ResolveUri(baseDirectory, relativeUri);
+		}
+	}
+}

src/AddIns/DisplayBindings/XmlEditor/Project/XmlEditor.csproj

@@ -68,6 +68,7 @@
     </Reference>
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Src\XslTransformUrlResolver.cs" />
     <None Include="XmlEditor.addin">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </None>