Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web/Configuration/IISMapPath.cs

@@ -0,0 +1,60 @@
+//------------------------------------------------------------------------------
+// <copyright file="IISMapPath.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.Web.Configuration {
+    using System.Configuration;
+    using System.Collections;
+    using System.Globalization;
+    using System.Xml;
+    using System.Text;
+    using System.Web.Util;
+    using System.Web.UI;
+    using System.IO;
+    using System.Web.Hosting;
+
+    //
+    // Abstracts the difference between Metabase and SitesSection IConfigMapPath.
+    //
+    static internal class IISMapPath {
+        static internal IConfigMapPath GetInstance() {
+            // IIS 7 bits on <= IIS 6.x: use the metabase
+            if (ServerConfig.UseMetabase) {
+                return (IConfigMapPath) MetabaseServerConfig.GetInstance();
+            }
+
+            if (ServerConfig.IISExpressVersion != null) {
+                return (IConfigMapPath) ServerConfig.GetInstance();
+            }
+            
+            ProcessHost host = ProcessHost.DefaultHost;
+            IProcessHostSupportFunctions functions = null;
+            
+            if (null != host) {
+                functions = host.SupportFunctions;                        
+            }
+            
+            if (functions == null) {
+                functions = HostingEnvironment.SupportFunctions;
+            }
+            
+            return new ProcessHostMapPath(functions);
+        }
+
+        // A site name might be an id if it is a number.
+        static internal bool IsSiteId(string siteName) {
+            if (string.IsNullOrEmpty(siteName))
+                return false;
+
+            for (int i = 0; i < siteName.Length; i++) {
+                if (!Char.IsDigit(siteName[i])) {
+                    return false;
+                }
+            }
+
+            return true;
+        }
+    }
+}