Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Configuration / System / Configuration / UrlPath.cs / 1305376 / UrlPath.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Configuration { using System.Collections; using System.Collections.Specialized; using System.Configuration; using System.Globalization; using System.IO; using System.Runtime.InteropServices; using System.Security.Permissions; using System.Security; using System.Text; using System.Xml; using Microsoft.Win32; static internal class UrlPath { internal static string GetDirectoryOrRootName(string path) { string dir; dir = Path.GetDirectoryName(path); if (dir == null) { // dir == null if path = "c:\" dir = Path.GetPathRoot(path); } return dir; } // // Determine if subdir is equal to or a subdirectory of dir. // For example, c:\mydir\subdir is a subdirectory of c:\mydir // Account for optional trailing backslashes. // internal static bool IsEqualOrSubdirectory(string dir, string subdir) { if (String.IsNullOrEmpty(dir)) return true; if (String.IsNullOrEmpty(subdir)) return false; // // Compare up to but not including trailing backslash // int lDir = dir.Length; if (dir[lDir - 1] == '\\') { lDir -= 1; } int lSubdir = subdir.Length; if (subdir[lSubdir - 1] == '\\') { lSubdir -= 1; } if (lSubdir < lDir) return false; if (String.Compare(dir, 0, subdir, 0, lDir, StringComparison.OrdinalIgnoreCase) != 0) return false; // Check subdir that character following length of dir is a backslash if (lSubdir > lDir && subdir[lDir] != '\\') return false; return true; } // // NOTE: This function is also present in fx\src\xsp\system\web\util\urlpath.cs // Please propagate any changes to that file. // // Determine if subpath is equal to or a subpath of path. // For example, /myapp/foo.aspx is a subpath of /myapp // Account for optional trailing slashes. // internal static bool IsEqualOrSubpath(string path, string subpath) { return IsEqualOrSubpathImpl(path, subpath, false); } // // Determine if subpath is a subpath of path, but return // false if subpath & path are the same. // For example, /myapp/foo.aspx is a subpath of /myapp // Account for optional trailing slashes. // internal static bool IsSubpath(string path, string subpath) { return IsEqualOrSubpathImpl(path, subpath, true); } private static bool IsEqualOrSubpathImpl(string path, string subpath, bool excludeEqual) { if (String.IsNullOrEmpty(path)) return true; if (String.IsNullOrEmpty(subpath)) return false; // // Compare up to but not including trailing slash // int lPath = path.Length; if (path[lPath - 1] == '/') { lPath -= 1; } int lSubpath = subpath.Length; if (subpath[lSubpath - 1] == '/') { lSubpath -= 1; } if (lSubpath < lPath) return false; if (excludeEqual && lSubpath == lPath) return false; if (String.Compare(path, 0, subpath, 0, lPath, StringComparison.OrdinalIgnoreCase) != 0) return false; // Check subpath that character following length of path is a slash if (lSubpath > lPath && subpath[lPath] != '/') return false; return true; } private static bool IsDirectorySeparatorChar(char ch) { return (ch == '\\' || ch == '/'); } private static bool IsAbsoluteLocalPhysicalPath(string path) { if (path == null || path.Length < 3) return false; // e.g c:\foo return (path[1] == ':' && IsDirectorySeparatorChar(path[2])); } private static bool IsAbsoluteUNCPhysicalPath(string path) { if (path == null || path.Length < 3) return false; // e.g \\server\share\foo or //server/share/foo return (IsDirectorySeparatorChar(path[0]) && IsDirectorySeparatorChar(path[1])); } const string FILE_URL_LOCAL = "file:///"; const string FILE_URL_UNC = "file:"; internal static string ConvertFileNameToUrl(string fileName) { string prefix; if (IsAbsoluteLocalPhysicalPath(fileName)) { prefix = FILE_URL_LOCAL; } else if (IsAbsoluteUNCPhysicalPath(fileName)) { prefix = FILE_URL_UNC; } else { // We should never get here, but if we do we are likely to have // serious security problems, so throw an exception rather than simply // asserting. throw ExceptionUtil.ParameterInvalid("filename"); } string newFileName = prefix + fileName.Replace('\\', '/'); return newFileName; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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