using System.IO; namespace System.Configuration { internal static class UrlPath { private const string FileUrlLocal = "file:///"; private const string FileUrlUnc = "file:"; internal static string GetDirectoryOrRootName(string path) { return Path.GetDirectoryName(path) ?? Path.GetPathRoot(path); } internal static bool IsEqualOrSubdirectory(string dir, string subdir) { if (string.IsNullOrEmpty(dir)) return true; if (string.IsNullOrEmpty(subdir)) return false; int num = dir.Length; if (dir[num - 1] == '\\' || dir[num - 1] == '/') num--; int num2 = subdir.Length; if (subdir[num2 - 1] == '\\' || dir[num - 1] == '/') num2--; if (num2 < num) return false; if (string.Compare(dir, 0, subdir, 0, num, StringComparison.OrdinalIgnoreCase) != 0) return false; if (num2 > num && subdir[num] != '\\') return subdir[num] == '/'; return true; } internal static bool IsEqualOrSubpath(string path, string subpath) { return IsEqualOrSubpathImpl(path, subpath, false); } 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; int num = path.Length; if (path[num - 1] == '/') num--; int num2 = subpath.Length; if (subpath[num2 - 1] == '/') num2--; if (num2 < num) return false; if (excludeEqual && num2 == num) return false; if (string.Compare(path, 0, subpath, 0, num, StringComparison.OrdinalIgnoreCase) != 0) return false; if (num2 > num) return subpath[num] == '/'; return true; } private static bool IsDirectorySeparatorChar(char ch) { if (ch != '\\') return ch == '/'; return true; } private static bool IsAbsoluteLocalPhysicalPath(string path) { if (path == null || path.Length < 3) return false; if (path[1] == ':') return IsDirectorySeparatorChar(path[2]); return false; } private static bool IsAbsoluteUncPhysicalPath(string path) { if (path == null || path.Length < 3) return false; if (IsDirectorySeparatorChar(path[0])) return IsDirectorySeparatorChar(path[1]); return false; } internal static string ConvertFileNameToUrl(string fileName) { string str; if (IsAbsoluteLocalPhysicalPath(fileName)) str = "file:///"; else { if (!IsAbsoluteUncPhysicalPath(fileName)) throw ExceptionUtil.ParameterInvalid("fileName"); str = "file:"; } return str + fileName.Replace('\\', '/'); } } }