Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Net / System / GenericUriParser.cs / 2 / GenericUriParser.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /*++ Abstract: This is a public sealed class that exposes various Uri parsing options suported by built in Uri parser Author: Alexei Vopilov Jul 26 2004 Revision History: --*/ namespace System { using System.Globalization; using System.Collections; using System.Security.Permissions; // // This enum specifies the public options used to customize a hierarchical built-in parser. // [Flags] public enum GenericUriParserOptions { // A hierarchical URI, allows a userinfo, non empty Inet-based authority, path, query and fragment // The URI path gets agressively compressed means dots, slashes and backslashes are unescaped, // backslashesare converted, and then it compresses the path. It also removes trailing dots, // empty segments and dots-only segments Default = 0x0, // Allows a free style authority that would terminate with '/' GenericAuthority = 0x1, // Allows an empty authority foo:/// AllowEmptyAuthority = 0x2, // Disables a user info component, it implied in the case of GenericAuthority flag NoUserInfo = 0x4, // Disables a port component, it is implied in the case of GenericAuthority flag NoPort = 0x8, // Disables a query. A ? char is considered as part of the path and is escaped NoQuery = 0x10, // Disables a fragment. A # char is considered as part of the path or query and is escaped NoFragment = 0x20, // if false then converta \ to /, otheriwse does this conversion for the Path component. DontConvertPathBackslashes = 0x40, // if false, then a/./b or a/.../b becomes a/b and /a/../b becomes /b DontCompressPath = 0x80, // if false then a/%2e./b becomes a/../b and then usually compressed DontUnescapePathDotsAndSlashes= 0x100, // IDN hosts supported. if true then unicode hostname is converted to IDN host // and vice versa Idn = 0x200, // Iri strict parsing flag. Makes sense for Unicode. If true then string is // normalized, bidi control characters are removed, unicode char limits are checked IriParsing = 0x400 } // // A hierachical Uri parser that supports various customization options // // ATTN: This type must be compile-time registered with UriParser.CheckSetIsSimpleFlag() method // to avoid calling into the user code if there is no one. // public class GenericUriParser: UriParser { // // The only availabe .ctor. // public GenericUriParser(GenericUriParserOptions options) : base(MapGenericParserOptions(options)) { } // private static UriSyntaxFlags MapGenericParserOptions(GenericUriParserOptions options) { // // Here we map public flags to internal ones // Note an instacne of this parser is always a "simple parser" since the class is sealed. // UriSyntaxFlags flags = DefaultGenericUriParserFlags; if ((options & GenericUriParserOptions.GenericAuthority) != 0) { // Disable some options that are not compatible with generic authority flags &= ~(UriSyntaxFlags.MayHaveUserInfo | UriSyntaxFlags.MayHavePort | UriSyntaxFlags.AllowUncHost | UriSyntaxFlags.AllowAnInternetHost); flags |= UriSyntaxFlags.AllowAnyOtherHost; } if ((options & GenericUriParserOptions.AllowEmptyAuthority) != 0) { flags |= UriSyntaxFlags.AllowEmptyHost; } if ((options & GenericUriParserOptions.NoUserInfo) != 0) { flags &= ~UriSyntaxFlags.MayHaveUserInfo; } if ((options & GenericUriParserOptions.NoPort) != 0) { flags &= ~UriSyntaxFlags.MayHavePort; } if ((options & GenericUriParserOptions.NoQuery) != 0) { flags &= ~UriSyntaxFlags.MayHaveQuery; } if ((options & GenericUriParserOptions.NoFragment) != 0) { flags &= ~UriSyntaxFlags.MayHaveFragment; } if ((options & GenericUriParserOptions.DontConvertPathBackslashes) != 0) { flags &= ~UriSyntaxFlags.ConvertPathSlashes; } if ((options & GenericUriParserOptions.DontCompressPath) != 0) { flags &= ~(UriSyntaxFlags.CompressPath | UriSyntaxFlags.CanonicalizeAsFilePath); } if ((options & GenericUriParserOptions.DontUnescapePathDotsAndSlashes) != 0) { flags &= ~UriSyntaxFlags.UnEscapeDotsAndSlashes; } if ((options & GenericUriParserOptions.Idn) != 0) { flags |= UriSyntaxFlags.AllowIdn; } if ((options & GenericUriParserOptions.IriParsing) != 0) { flags |= UriSyntaxFlags.AllowIriParsing; } return flags; } private const UriSyntaxFlags DefaultGenericUriParserFlags = UriSyntaxFlags.MustHaveAuthority | // UriSyntaxFlags.MayHaveUserInfo | UriSyntaxFlags.MayHavePort | UriSyntaxFlags.MayHavePath | UriSyntaxFlags.MayHaveQuery | UriSyntaxFlags.MayHaveFragment | // UriSyntaxFlags.AllowUncHost | // UriSyntaxFlags.AllowAnInternetHost | // UriSyntaxFlags.PathIsRooted | // UriSyntaxFlags.ConvertPathSlashes | UriSyntaxFlags.CompressPath | UriSyntaxFlags.CanonicalizeAsFilePath | UriSyntaxFlags.UnEscapeDotsAndSlashes; } }
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