55 lines
2.3 KiB
C#
55 lines
2.3 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="ProcessHostSupportFunctionsExtensions.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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namespace System.Web.Hosting {
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using System;
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using System.Text;
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using System.Web.Util;
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internal static class ProcessHostSupportFunctionsExtensions {
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// Use this instead of MapPath, as it encapsulates the correct way to invoke
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// the MapPath method. Didn't bother much with efficiency since it's called
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// so few times.
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//
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// Example inputs: MapPathInternal(appId, "/appVPath", "/bin/foo.dll");
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public static string MapPathInternal(this IProcessHostSupportFunctions supportFunctions, string appId, string appVirtualPath, string relativePath) {
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Debug.Assert(supportFunctions != null);
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Debug.Assert(!String.IsNullOrWhiteSpace(appId));
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Debug.Assert(!String.IsNullOrWhiteSpace(appVirtualPath) && appVirtualPath[0] == '/');
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Debug.Assert(relativePath != null);
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StringBuilder fullVirtualPath = new StringBuilder(appVirtualPath.Length + relativePath.Length + 2 /* for slashes */);
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// Ensure the app virtual path is always preceded by a slash
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if (appVirtualPath[0] != '/') {
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fullVirtualPath.Append('/');
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}
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fullVirtualPath.Append(appVirtualPath);
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// Ensure the app virtual path always ends with a slash
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if (fullVirtualPath[fullVirtualPath.Length - 1] != '/') {
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fullVirtualPath.Append('/');
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}
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// Append the relative path, removing the preceding slash if necessary
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if (relativePath.Length > 0) {
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if (relativePath[0] == '/') {
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fullVirtualPath.Append(relativePath, 1, relativePath.Length - 1);
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}
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else {
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fullVirtualPath.Append(relativePath);
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}
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}
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string physicalPath;
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supportFunctions.MapPath(appId, fullVirtualPath.ToString(), out physicalPath);
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return physicalPath;
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}
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}
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}
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