private static void CheckDispositionTypeFormat(string dispositionType, string parameterName)
{
if (string.IsNullOrEmpty(dispositionType))
{
throw new ArgumentException(SR.net_http_argument_empty_string, parameterName);
}
string dispositionType1;
if (ContentDispositionHeaderValue.GetDispositionTypeExpressionLength(dispositionType, 0, out dispositionType1) == 0 || dispositionType1.Length != dispositionType.Length)
{
throw new FormatException(SR.Format((IFormatProvider)CultureInfo.InvariantCulture, SR.net_http_headers_invalid_value, (object)dispositionType));
}
}
internal static int GetDispositionTypeLength(
string input,
int startIndex,
out object parsedValue)
{
parsedValue = (object)null;
if (string.IsNullOrEmpty(input) || startIndex >= input.Length)
{
return(0);
}
string dispositionType = (string)null;
int expressionLength = ContentDispositionHeaderValue.GetDispositionTypeExpressionLength(input, startIndex, out dispositionType);
if (expressionLength == 0)
{
return(0);
}
int startIndex1 = startIndex + expressionLength;
int index = startIndex1 + HttpRuleParser.GetWhitespaceLength(input, startIndex1);
ContentDispositionHeaderValue dispositionHeaderValue = new ContentDispositionHeaderValue();
dispositionHeaderValue._dispositionType = dispositionType;
if (index < input.Length && input[index] == ';')
{
int startIndex2 = index + 1;
int nameValueListLength = NameValueHeaderValue.GetNameValueListLength(input, startIndex2, ';', (ObjectCollection <NameValueHeaderValue>)dispositionHeaderValue.Parameters);
if (nameValueListLength == 0)
{
return(0);
}
parsedValue = (object)dispositionHeaderValue;
return(startIndex2 + nameValueListLength - startIndex);
}
parsedValue = (object)dispositionHeaderValue;
return(index - startIndex);
}