1 files changed, 115 insertions, 0 deletions
diff --git a/tools/Sandcastle/Source/BuildAssembler/BuildComponents/CodeReference.cs b/tools/Sandcastle/Source/BuildAssembler/BuildComponents/CodeReference.cs
new file mode 100644
index 0000000..974a28d
--- /dev/null
+++ b/tools/Sandcastle/Source/BuildAssembler/BuildComponents/CodeReference.cs
@@ -0,0 +1,115 @@
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//
+
+using System;
+using System.Text.RegularExpressions;
+using System.Collections.Generic;
+
+
+namespace Microsoft.Ddue.Tools {
+
+    public enum CodeReferenceType {
+        Invalid,    // not initialized, invalid reference string
+        Snippet,    // MSDN style snippet for all build targets
+        Msdn,       // MSDN style snippet for MSDN build only
+        Run,        // runnable code sample with pop-up source browser for WebDocs build
+        View        // code sample shown in pop-up source browser for WebDocs build
+    }
+
+    /// <summary>
+    /// The CodeReference class encapsulates DDUE code reference elements and provides easy access
+    /// to individual code reference parts, such as the type, name, title, etc..
+    /// </summary>
+    /// <remarks>
+    /// Examples of valid code reference strings include:
+    ///   - SampleName#SnippetNumber
+    ///   - SampleName#SnippetNumber1,SnippetNumber2,SnippetNumber3
+    ///   - msdn:SampleName#SnippetNumber
+    ///   - run:SampleName
+    ///   - run:SampleName;title text
+    ///   - run:SampleName#startPage.aspx
+    ///   - run:SampleName/path/to/startPage.aspx
+    ///   - run:SampleName#startPage.aspx;title text
+    ///   - run:SampleName/path/to/startPage.aspx;title text
+    ///   - view:SampleName
+    ///   - view:SampleName#defaultFile
+    ///   - view:SampleName/path/to/defaultFile
+    ///   - view:SampleName#defaultFile;title text
+    ///   - view:SampleName/path/to/defaultFile;title text
+    /// </remarks>
+    public class CodeReference {
+
+        string _ddueCodeReference;
+        public string DdueCodeReference {
+            get { return _ddueCodeReference; }
+        }
+
+        CodeReferenceType _type;
+        public CodeReferenceType Type {
+            get { return _type; }
+        }
+
+        string _exampleName;
+        public string ExampleName {
+            get { return _exampleName; }
+        }
+
+        string _examplePath;
+        public string ExamplePath {
+            get { return _examplePath; }
+        }
+
+        string _snippetId;
+        public string SnippetId {
+            get { return _snippetId; }
+        }
+
+        string _title;
+        public string Title {
+            get { return _title; }
+        }
+
+        public CodeReference(string ddueCodeReference) {
+            _ddueCodeReference = ddueCodeReference;
+            Parse();
+        }
+
+        static Regex codeReferenceRx = new Regex(
+            @"^\s*(" +
+                @"((?<type>msdn|run|view):)?" +
+                @"(?<examplePath>(" +
+                    @"(?<exampleName>[\w\.,\-]+)" +
+                    @"((#(?<snippetId>[\w,]+))|(([/\\#,\.\w\-]+)?))" +
+                @"))" +
+                @"(;(?<title>.*))?" +
+            @")\s*$",
+            RegexOptions.ExplicitCapture | RegexOptions.IgnoreCase | RegexOptions.Compiled);
+
+        void Parse() {
+            Match m = codeReferenceRx.Match(DdueCodeReference);
+            if (m.Success) {
+                _exampleName = m.Groups["exampleName"].Value;
+                _snippetId = m.Groups["snippetId"].Value;
+                _examplePath = m.Groups["examplePath"].Value;
+                _title = m.Groups["title"].Value;
+                // The default value of _type is CodeReferenceType.Invalid, if it isn't set in the following
+                // block.
+                if (m.Groups["type"].Length > 0) {
+                    try {
+                        _type = (CodeReferenceType)Enum.Parse(typeof(CodeReferenceType), m.Groups["type"].Value, true);
+                    }
+                    catch (ArgumentException) {
+                        // _type = CodeReferenceType.Invalid
+                    }
+                }
+                else if (m.Groups["exampleName"].Length > 0 && m.Groups["snippetId"].Length > 0) {
+                    _type = CodeReferenceType.Snippet;
+                }
+            }
+        }
+
+        public override string ToString() {
+            return DdueCodeReference;
+        }
+    }
+}
+\ No newline at end of file