Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

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

@@ -0,0 +1,106 @@
+//------------------------------------------------------------------------------
+// <copyright file="HostingPreferredMapPath.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;
+
+    //
+    // IConfigMapPath that uses the HostingEnvironment's IConfigMapPath for
+    // paths that it maps, and uses the web server IConfigMapPath for
+    // all other paths.
+    //
+    // This allows us to use mappings for an app using SimpleApplicationHost,
+    // while still correctly mapping paths outside the app.
+    //
+    class HostingPreferredMapPath : IConfigMapPath {
+        IConfigMapPath  _iisConfigMapPath;
+        IConfigMapPath  _hostingConfigMapPath;
+
+        internal static IConfigMapPath GetInstance() {
+            IConfigMapPath iisConfigMapPath = IISMapPath.GetInstance();
+            IConfigMapPath hostingConfigMapPath = HostingEnvironment.ConfigMapPath;
+
+            // Only delegate if the types implementing IConfigMapPath are different.
+            if (hostingConfigMapPath == null || iisConfigMapPath.GetType() == hostingConfigMapPath.GetType())
+                return iisConfigMapPath;
+
+            return new HostingPreferredMapPath(iisConfigMapPath, hostingConfigMapPath);
+        }
+
+        HostingPreferredMapPath(IConfigMapPath iisConfigMapPath, IConfigMapPath hostingConfigMapPath) {
+            _iisConfigMapPath = iisConfigMapPath;
+            _hostingConfigMapPath = hostingConfigMapPath;
+        }
+
+
+        public string GetMachineConfigFilename() {
+            string filename = _hostingConfigMapPath.GetMachineConfigFilename();
+            if (string.IsNullOrEmpty(filename)) {
+                filename = _iisConfigMapPath.GetMachineConfigFilename();
+            }
+
+            return filename;
+        }
+
+        public string GetRootWebConfigFilename() {
+            string filename = _hostingConfigMapPath.GetRootWebConfigFilename();
+            if (string.IsNullOrEmpty(filename)) {
+                filename = _iisConfigMapPath.GetRootWebConfigFilename();
+            }
+
+            return filename;
+        }
+
+        public void GetPathConfigFilename(
+                string siteID, string path, out string directory, out string baseName) {
+
+            _hostingConfigMapPath.GetPathConfigFilename(siteID, path, out directory, out baseName);
+            if (string.IsNullOrEmpty(directory)) {
+                _iisConfigMapPath.GetPathConfigFilename(siteID, path, out directory, out baseName);
+            }
+        }
+
+        public void GetDefaultSiteNameAndID(out string siteName, out string siteID) {
+            _hostingConfigMapPath.GetDefaultSiteNameAndID(out siteName, out siteID);
+            if (string.IsNullOrEmpty(siteID)) {
+                _iisConfigMapPath.GetDefaultSiteNameAndID(out siteName, out siteID);
+            }
+        }
+
+        public void ResolveSiteArgument(string siteArgument, out string siteName, out string siteID) {
+            _hostingConfigMapPath.ResolveSiteArgument(siteArgument, out siteName, out siteID);
+            if (string.IsNullOrEmpty(siteID)) {
+                _iisConfigMapPath.ResolveSiteArgument(siteArgument, out siteName, out siteID);
+            }
+        }
+
+        public string MapPath(string siteID, string path) {
+            string physicalPath = _hostingConfigMapPath.MapPath(siteID, path);
+            if (string.IsNullOrEmpty(physicalPath)) {
+                physicalPath = _iisConfigMapPath.MapPath(siteID, path);
+            }
+
+            return physicalPath;
+        }
+
+        public string GetAppPathForPath(string siteID, string path) {
+            string appPath = _hostingConfigMapPath.GetAppPathForPath(siteID, path);
+            if (appPath == null) {
+                appPath = _iisConfigMapPath.GetAppPathForPath(siteID, path);
+            }
+
+            return appPath;
+        }
+    }
+}