GenericUriParser.cs

namespace System
{
    public class GenericUriParser : UriParser
    {
        private const UriSyntaxFlags DefaultGenericUriParserFlags = UriSyntaxFlags.MustHaveAuthority | UriSyntaxFlags.MayHaveUserInfo | UriSyntaxFlags.MayHavePort | UriSyntaxFlags.MayHavePath | UriSyntaxFlags.MayHaveQuery | UriSyntaxFlags.MayHaveFragment | UriSyntaxFlags.AllowUncHost | UriSyntaxFlags.AllowDnsHost | UriSyntaxFlags.AllowIPv4Host | UriSyntaxFlags.AllowIPv6Host | UriSyntaxFlags.PathIsRooted | UriSyntaxFlags.ConvertPathSlashes | UriSyntaxFlags.CompressPath | UriSyntaxFlags.CanonicalizeAsFilePath | UriSyntaxFlags.UnEscapeDotsAndSlashes;

        public GenericUriParser(GenericUriParserOptions options)
            : base(MapGenericParserOptions(options))
        {
        }

        private static UriSyntaxFlags MapGenericParserOptions(GenericUriParserOptions options)
        {
            UriSyntaxFlags uriSyntaxFlags = UriSyntaxFlags.MustHaveAuthority | UriSyntaxFlags.MayHaveUserInfo | UriSyntaxFlags.MayHavePort | UriSyntaxFlags.MayHavePath | UriSyntaxFlags.MayHaveQuery | UriSyntaxFlags.MayHaveFragment | UriSyntaxFlags.AllowUncHost | UriSyntaxFlags.AllowDnsHost | UriSyntaxFlags.AllowIPv4Host | UriSyntaxFlags.AllowIPv6Host | UriSyntaxFlags.PathIsRooted | UriSyntaxFlags.ConvertPathSlashes | UriSyntaxFlags.CompressPath | UriSyntaxFlags.CanonicalizeAsFilePath | UriSyntaxFlags.UnEscapeDotsAndSlashes;
            if ((options & GenericUriParserOptions.GenericAuthority) != 0)
            {
                uriSyntaxFlags &= ~(UriSyntaxFlags.MayHaveUserInfo | UriSyntaxFlags.MayHavePort | UriSyntaxFlags.AllowUncHost | UriSyntaxFlags.AllowDnsHost | UriSyntaxFlags.AllowIPv4Host | UriSyntaxFlags.AllowIPv6Host);
                uriSyntaxFlags |= UriSyntaxFlags.AllowAnyOtherHost;
            }
            if ((options & GenericUriParserOptions.AllowEmptyAuthority) != 0)
            {
                uriSyntaxFlags |= UriSyntaxFlags.AllowEmptyHost;
            }
            if ((options & GenericUriParserOptions.NoUserInfo) != 0)
            {
                uriSyntaxFlags &= ~UriSyntaxFlags.MayHaveUserInfo;
            }
            if ((options & GenericUriParserOptions.NoPort) != 0)
            {
                uriSyntaxFlags &= ~UriSyntaxFlags.MayHavePort;
            }
            if ((options & GenericUriParserOptions.NoQuery) != 0)
            {
                uriSyntaxFlags &= ~UriSyntaxFlags.MayHaveQuery;
            }
            if ((options & GenericUriParserOptions.NoFragment) != 0)
            {
                uriSyntaxFlags &= ~UriSyntaxFlags.MayHaveFragment;
            }
            if ((options & GenericUriParserOptions.DontConvertPathBackslashes) != 0)
            {
                uriSyntaxFlags &= ~UriSyntaxFlags.ConvertPathSlashes;
            }
            if ((options & GenericUriParserOptions.DontCompressPath) != 0)
            {
                uriSyntaxFlags &= ~(UriSyntaxFlags.CompressPath | UriSyntaxFlags.CanonicalizeAsFilePath);
            }
            if ((options & GenericUriParserOptions.DontUnescapePathDotsAndSlashes) != 0)
            {
                uriSyntaxFlags &= ~UriSyntaxFlags.UnEscapeDotsAndSlashes;
            }
            if ((options & GenericUriParserOptions.Idn) != 0)
            {
                uriSyntaxFlags |= UriSyntaxFlags.AllowIdn;
            }
            if ((options & GenericUriParserOptions.IriParsing) != 0)
            {
                uriSyntaxFlags |= UriSyntaxFlags.AllowIriParsing;
            }
            return uriSyntaxFlags;
        }
    }
}