System.Xml.XmlTextReaderImpl.SkipDtd C# (CSharp) Méthode

        private void SkipDtd()
        {
            int colonPos;

            // parse dtd name
            int pos = ParseQName(out colonPos);
            _ps.charPos = pos;

            // check whitespace
            EatWhitespaces(null);

            // PUBLIC Id
            if (_ps.chars[_ps.charPos] == 'P')
            {
                // make sure we have enough characters
                while (_ps.charsUsed - _ps.charPos < 6)
                {
                    if (ReadData() == 0)
                    {
                        Throw(SR.Xml_UnexpectedEOF1);
                    }
                }
                // check 'PUBLIC'
                if (!XmlConvert.StrEqual(_ps.chars, _ps.charPos, 6, "PUBLIC"))
                {
                    ThrowUnexpectedToken("PUBLIC");
                }
                _ps.charPos += 6;

                // check whitespace
                if (EatWhitespaces(null) == 0)
                {
                    ThrowExpectingWhitespace(_ps.charPos);
                }

                // parse PUBLIC value
                SkipPublicOrSystemIdLiteral();

                // check whitespace
                if (EatWhitespaces(null) == 0)
                {
                    ThrowExpectingWhitespace(_ps.charPos);
                }

                // parse SYSTEM value
                SkipPublicOrSystemIdLiteral();

                EatWhitespaces(null);
            }
            else if (_ps.chars[_ps.charPos] == 'S')
            {
                // make sure we have enough characters
                while (_ps.charsUsed - _ps.charPos < 6)
                {
                    if (ReadData() == 0)
                    {
                        Throw(SR.Xml_UnexpectedEOF1);
                    }
                }
                // check 'SYSTEM'
                if (!XmlConvert.StrEqual(_ps.chars, _ps.charPos, 6, "SYSTEM"))
                {
                    ThrowUnexpectedToken("SYSTEM");
                }
                _ps.charPos += 6;

                // check whitespace
                if (EatWhitespaces(null) == 0)
                {
                    ThrowExpectingWhitespace(_ps.charPos);
                }

                // parse SYSTEM value
                SkipPublicOrSystemIdLiteral();

                EatWhitespaces(null);
            }
            else if (_ps.chars[_ps.charPos] != '[' && _ps.chars[_ps.charPos] != '>')
            {
                Throw(SR.Xml_ExpectExternalOrClose);
            }

            // internal DTD
            if (_ps.chars[_ps.charPos] == '[')
            {
                _ps.charPos++;

                SkipUntil(']', true);

                EatWhitespaces(null);
                if (_ps.chars[_ps.charPos] != '>')
                {
                    ThrowUnexpectedToken(">");
                }
            }
            else if (_ps.chars[_ps.charPos] == '>')
            {
                _curNode.SetValue(string.Empty);
            }
            else
            {
                Throw(SR.Xml_ExpectSubOrClose);
            }
            _ps.charPos++;
        }