private static int GetKeyValuePair(
string connectionString,
int currentPosition,
StringBuilder buffer,
out string keyname,
out string keyvalue)
{
int num = currentPosition;
buffer.Length = 0;
keyname = (string)null;
keyvalue = (string)null;
char minValue = char.MinValue;
DbConnectionOptions.ParserState parserState = DbConnectionOptions.ParserState.NothingYet;
for (int length = connectionString.Length; currentPosition < length; ++currentPosition)
{
minValue = connectionString[currentPosition];
switch (parserState)
{
case DbConnectionOptions.ParserState.NothingYet:
if (';' != minValue && !char.IsWhiteSpace(minValue))
{
if (minValue == char.MinValue)
{
parserState = DbConnectionOptions.ParserState.NullTermination;
continue;
}
if (char.IsControl(minValue))
{
throw new ArgumentException(Strings.ADP_ConnectionStringSyntax((object)num));
}
num = currentPosition;
if ('=' != minValue)
{
parserState = DbConnectionOptions.ParserState.Key;
break;
}
parserState = DbConnectionOptions.ParserState.KeyEqual;
continue;
}
continue;
case DbConnectionOptions.ParserState.Key:
if ('=' == minValue)
{
parserState = DbConnectionOptions.ParserState.KeyEqual;
continue;
}
if (!char.IsWhiteSpace(minValue) && char.IsControl(minValue))
{
throw new ArgumentException(Strings.ADP_ConnectionStringSyntax((object)num));
}
break;
case DbConnectionOptions.ParserState.KeyEqual:
if ('=' == minValue)
{
parserState = DbConnectionOptions.ParserState.Key;
break;
}
keyname = DbConnectionOptions.GetKeyName(buffer);
if (string.IsNullOrEmpty(keyname))
{
throw new ArgumentException(Strings.ADP_ConnectionStringSyntax((object)num));
}
buffer.Length = 0;
parserState = DbConnectionOptions.ParserState.KeyEnd;
goto case DbConnectionOptions.ParserState.KeyEnd;
case DbConnectionOptions.ParserState.KeyEnd:
if (!char.IsWhiteSpace(minValue))
{
if ('\'' == minValue)
{
parserState = DbConnectionOptions.ParserState.SingleQuoteValue;
continue;
}
if ('"' == minValue)
{
parserState = DbConnectionOptions.ParserState.DoubleQuoteValue;
continue;
}
if (';' != minValue && minValue != char.MinValue)
{
if (char.IsControl(minValue))
{
throw new ArgumentException(Strings.ADP_ConnectionStringSyntax((object)num));
}
parserState = DbConnectionOptions.ParserState.UnquotedValue;
break;
}
goto label_54;
}
else
{
continue;
}
case DbConnectionOptions.ParserState.UnquotedValue:
if (char.IsWhiteSpace(minValue) || !char.IsControl(minValue) && ';' != minValue)
{
break;
}
goto label_54;
case DbConnectionOptions.ParserState.DoubleQuoteValue:
if ('"' == minValue)
{
parserState = DbConnectionOptions.ParserState.DoubleQuoteValueQuote;
continue;
}
if (minValue == char.MinValue)
{
throw new ArgumentException(Strings.ADP_ConnectionStringSyntax((object)num));
}
break;
case DbConnectionOptions.ParserState.DoubleQuoteValueQuote:
if ('"' == minValue)
{
parserState = DbConnectionOptions.ParserState.DoubleQuoteValue;
break;
}
keyvalue = DbConnectionOptions.GetKeyValue(buffer, false);
parserState = DbConnectionOptions.ParserState.QuotedValueEnd;
goto case DbConnectionOptions.ParserState.QuotedValueEnd;
case DbConnectionOptions.ParserState.SingleQuoteValue:
if ('\'' == minValue)
{
parserState = DbConnectionOptions.ParserState.SingleQuoteValueQuote;
continue;
}
if (minValue == char.MinValue)
{
throw new ArgumentException(Strings.ADP_ConnectionStringSyntax((object)num));
}
break;
case DbConnectionOptions.ParserState.SingleQuoteValueQuote:
if ('\'' == minValue)
{
parserState = DbConnectionOptions.ParserState.SingleQuoteValue;
break;
}
keyvalue = DbConnectionOptions.GetKeyValue(buffer, false);
parserState = DbConnectionOptions.ParserState.QuotedValueEnd;
goto case DbConnectionOptions.ParserState.QuotedValueEnd;
case DbConnectionOptions.ParserState.QuotedValueEnd:
if (!char.IsWhiteSpace(minValue))
{
if (';' != minValue)
{
if (minValue != char.MinValue)
{
throw new ArgumentException(Strings.ADP_ConnectionStringSyntax((object)num));
}
parserState = DbConnectionOptions.ParserState.NullTermination;
continue;
}
goto label_54;
}
else
{
continue;
}
case DbConnectionOptions.ParserState.NullTermination:
if (minValue != char.MinValue && !char.IsWhiteSpace(minValue))
{
throw new ArgumentException(Strings.ADP_ConnectionStringSyntax((object)currentPosition));
}
continue;
default:
throw new InvalidOperationException(Strings.ADP_InternalProviderError((object)1015));
}
buffer.Append(minValue);
}
label_54:
switch (parserState)
{
case DbConnectionOptions.ParserState.NothingYet:
case DbConnectionOptions.ParserState.KeyEnd:
case DbConnectionOptions.ParserState.NullTermination:
if (';' == minValue && currentPosition < connectionString.Length)
{
++currentPosition;
}
return(currentPosition);
case DbConnectionOptions.ParserState.Key:
case DbConnectionOptions.ParserState.DoubleQuoteValue:
case DbConnectionOptions.ParserState.SingleQuoteValue:
throw new ArgumentException(Strings.ADP_ConnectionStringSyntax((object)num));
case DbConnectionOptions.ParserState.KeyEqual:
keyname = DbConnectionOptions.GetKeyName(buffer);
if (string.IsNullOrEmpty(keyname))
{
throw new ArgumentException(Strings.ADP_ConnectionStringSyntax((object)num));
}
goto case DbConnectionOptions.ParserState.NothingYet;
case DbConnectionOptions.ParserState.UnquotedValue:
keyvalue = DbConnectionOptions.GetKeyValue(buffer, true);
char ch = keyvalue[keyvalue.Length - 1];
if ('\'' == ch || '"' == ch)
{
throw new ArgumentException(Strings.ADP_ConnectionStringSyntax((object)num));
}
goto case DbConnectionOptions.ParserState.NothingYet;
case DbConnectionOptions.ParserState.DoubleQuoteValueQuote:
case DbConnectionOptions.ParserState.SingleQuoteValueQuote:
case DbConnectionOptions.ParserState.QuotedValueEnd:
keyvalue = DbConnectionOptions.GetKeyValue(buffer, false);
goto case DbConnectionOptions.ParserState.NothingYet;
default:
throw new InvalidOperationException(Strings.ADP_InternalProviderError((object)1016));
}
}
