1 files changed, 173 insertions, 0 deletions

diff --git a/tools/Sandcastle/Source/BuildAssembler/BuildAssemblerLibrary/BuildContext.cs b/tools/Sandcastle/Source/BuildAssembler/BuildAssemblerLibrary/BuildContext.cs
new file mode 100644
index 0000000..02bed62
--- /dev/null
+++ b/tools/Sandcastle/Source/BuildAssembler/BuildAssemblerLibrary/BuildContext.cs
@@ -0,0 +1,173 @@
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//
+using System;
+using System.Collections.Generic;
+using System.Xml;
+using System.Xml.XPath;
+using System.Xml.Xsl;
+
+namespace Microsoft.Ddue.Tools {
+
+	public class BuildContext {
+
+		private CustomContext context = new CustomContext();
+
+		// Namespace control
+
+		public void AddNamespace (string prefix, string uri) {
+			context.AddNamespace(prefix, uri);
+		}
+
+		public string LookupNamespace (string prefix) {
+			return( context.LookupNamespace(prefix) );
+		}
+
+		public bool RemoveNamespace (string prefix) {
+			string uri = LookupNamespace(prefix);
+			if (uri == null) {
+				return(false);
+			} else {
+				context.RemoveNamespace(prefix, uri);
+				return(true);
+			}
+		}
+
+		public void ClearNamespaces () {
+		}
+
+		// Variable control
+
+		public void AddVariable (string name, string value) {
+			context[name] = value;
+		}
+
+		public string LookupVariable (string name) {
+			return( context[name] );
+		}
+
+		public bool RemoveVariable (string name) {
+			return( context.ClearVariable(name) );
+		}
+
+		public void ClearVariables () {
+			context.ClearVariables();
+		}
+
+		public string this [string name] {
+			get {
+				return(context[name]);
+			}
+			set {
+				context[name] = value;
+			}
+		}
+
+		// Function control
+
+		// The context for use in XPath queries
+
+		public XsltContext XsltContext {
+			get {
+				return(context);
+			}
+		}
+
+        // Load data from config
+
+        public void Load (XPathNavigator configuration) {
+            XPathNodeIterator namespaceNodes = configuration.Select("namespace");
+            foreach (XPathNavigator namespaceNode in namespaceNodes) {
+                string prefixValue = namespaceNode.GetAttribute("prefix", String.Empty);
+                string uriValue = namespaceNode.GetAttribute("uri", String.Empty);
+                AddNamespace(prefixValue, uriValue);
+            }
+        }
+
+	}
+
+	 public class CustomContext : XsltContext {
+
+		public CustomContext() : base() {}
+
+		// variable control
+
+		private Dictionary<string, IXsltContextVariable> variables = new Dictionary<string,IXsltContextVariable>();
+
+		public string this [string variable] {
+			get {
+				return(variables[variable].Evaluate(this).ToString());
+			}
+			set {
+				variables[variable] = new CustomVariable(value);
+			}
+		}
+
+		public bool ClearVariable (string name) {
+			return( variables.Remove(name) );
+		}
+
+		public void ClearVariables () {
+			variables.Clear();
+		}
+
+		// Implementation of XsltContext methods
+
+		public override IXsltContextVariable ResolveVariable (string prefix, string name) {
+			return( variables[name] );
+		}
+
+		public override IXsltContextFunction ResolveFunction (string prefix, string name, XPathResultType[] argumentTypes) {
+			throw new NotImplementedException();
+		}		
+
+		public override int CompareDocument (string baseUri, string nextBaseUri) {
+			return(0);
+		}
+
+		public override bool Whitespace {
+			get {
+				return(true);
+			}
+		}
+
+		public override bool PreserveWhitespace (XPathNavigator node) {
+			return(true);
+		}
+
+	}
+
+
+	internal struct CustomVariable : IXsltContextVariable {
+
+		public CustomVariable (string value) {
+			this.value = value;
+		}
+
+		private string value;
+
+		public bool IsLocal {
+			get {
+				return(false);
+			}
+		}
+
+		public bool IsParam {
+			get {
+				return(false);
+			}
+		}
+
+		public XPathResultType VariableType {
+			get {
+				return(XPathResultType.String);
+			}
+		}
+
+		public Object Evaluate (XsltContext context) {
+			return(value);
+		}
+
+	}
+	
+
+}
\ No newline at end of file