// Helper methods.
void ParseValue()
{
int offset = 0;
Exception exception = null;
parameters = new TrackingStringDictionary();
try{
mediaType = MailBnfHelper.ReadToken(type, ref offset, null);
if (mediaType == null || mediaType.Length == 0 || offset >= type.Length || type[offset++] != '/')
{
exception = new FormatException(SR.GetString(SR.ContentTypeInvalid));
}
if (exception == null)
{
subType = MailBnfHelper.ReadToken(type, ref offset, null);
if (subType == null || subType.Length == 0)
{
exception = new FormatException(SR.GetString(SR.ContentTypeInvalid));
}
}
if (exception == null)
{
while (MailBnfHelper.SkipCFWS(type, ref offset))
{
if (type[offset++] != ';')
{
exception = new FormatException(SR.GetString(SR.ContentTypeInvalid));
break;
}
if (!MailBnfHelper.SkipCFWS(type, ref offset))
{
break;
}
string paramAttribute = MailBnfHelper.ReadParameterAttribute(type, ref offset, null);
if (paramAttribute == null || paramAttribute.Length == 0)
{
exception = new FormatException(SR.GetString(SR.ContentTypeInvalid));
break;
}
string paramValue;
if (offset >= type.Length || type[offset++] != '=')
{
exception = new FormatException(SR.GetString(SR.ContentTypeInvalid));
break;
}
if (!MailBnfHelper.SkipCFWS(type, ref offset))
{
exception = new FormatException(SR.GetString(SR.ContentTypeInvalid));
break;
}
if (type[offset] == '"')
{
paramValue = MailBnfHelper.ReadQuotedString(type, ref offset, null);
}
else
{
paramValue = MailBnfHelper.ReadToken(type, ref offset, null);
}
if (paramValue == null)
{
exception = new FormatException(SR.GetString(SR.ContentTypeInvalid));
break;
}
parameters.Add(paramAttribute, paramValue);
}
}
parameters.IsChanged = false;
}
catch (FormatException) {
throw new FormatException(SR.GetString(SR.ContentTypeInvalid));
}
if (exception != null)
{
throw new FormatException(SR.GetString(SR.ContentTypeInvalid));
}
}
private void ParseValue()
{
try
{
int offset = 0;
_mediaType = MailBnfHelper.ReadToken(_type, ref offset, null);
if (_mediaType == null || _mediaType.Length == 0 || offset >= _type.Length || _type[offset++] != '/')
{
throw new FormatException(SR.ContentTypeInvalid);
}
_subType = MailBnfHelper.ReadToken(_type, ref offset, null);
if (_subType == null || _subType.Length == 0)
{
throw new FormatException(SR.ContentTypeInvalid);
}
while (MailBnfHelper.SkipCFWS(_type, ref offset))
{
if (_type[offset++] != ';')
{
throw new FormatException(SR.ContentTypeInvalid);
}
if (!MailBnfHelper.SkipCFWS(_type, ref offset))
{
break;
}
string?paramAttribute = MailBnfHelper.ReadParameterAttribute(_type, ref offset, null);
if (paramAttribute == null || paramAttribute.Length == 0)
{
throw new FormatException(SR.ContentTypeInvalid);
}
string?paramValue;
if (offset >= _type.Length || _type[offset++] != '=')
{
throw new FormatException(SR.ContentTypeInvalid);
}
if (!MailBnfHelper.SkipCFWS(_type, ref offset))
{
throw new FormatException(SR.ContentTypeInvalid);
}
paramValue = _type[offset] == '"' ?
MailBnfHelper.ReadQuotedString(_type, ref offset, null) :
MailBnfHelper.ReadToken(_type, ref offset, null);
if (paramValue == null)
{
throw new FormatException(SR.ContentTypeInvalid);
}
_parameters.Add(paramAttribute, paramValue);
}
_parameters.IsChanged = false;
}
catch (FormatException fe) when(fe.Message != SR.ContentTypeInvalid)
{
throw new FormatException(SR.ContentTypeInvalid);
}
}
// Helper methods.
void ParseValue()
{
int offset = 0;
Exception exception = null;
parameters = new TrackingStringDictionary();
try{
mediaType = MailBnfHelper.ReadToken(type, ref offset, null);
if (mediaType == null || mediaType.Length == 0 || offset >= type.Length || type[offset++] != '/'){
exception = new FormatException(SR.GetString(SR.ContentTypeInvalid));
}
if (exception == null) {
subType = MailBnfHelper.ReadToken(type, ref offset, null);
if (subType == null || subType.Length == 0){
exception = new FormatException(SR.GetString(SR.ContentTypeInvalid));
}
}
if (exception == null) {
while (MailBnfHelper.SkipCFWS(type, ref offset))
{
if (type[offset++] != ';'){
exception = new FormatException(SR.GetString(SR.ContentTypeInvalid));
break;
}
if (!MailBnfHelper.SkipCFWS(type, ref offset))
break;
string paramAttribute = MailBnfHelper.ReadParameterAttribute(type, ref offset, null);
if(paramAttribute == null || paramAttribute.Length == 0){
exception = new FormatException(SR.GetString(SR.ContentTypeInvalid));
break;
}
string paramValue;
if ( offset >= type.Length || type[offset++] != '='){
exception = new FormatException(SR.GetString(SR.ContentTypeInvalid));
break;
}
if (!MailBnfHelper.SkipCFWS(type, ref offset)){
exception = new FormatException(SR.GetString(SR.ContentTypeInvalid));
break;
}
if (type[offset] == '"')
paramValue = MailBnfHelper.ReadQuotedString(type, ref offset, null);
else
paramValue = MailBnfHelper.ReadToken(type, ref offset, null);
if(paramValue == null){
exception = new FormatException(SR.GetString(SR.ContentTypeInvalid));
break;
}
parameters.Add(paramAttribute, paramValue);
}
}
parameters.IsChanged = false;
}
catch(FormatException){
throw new FormatException(SR.GetString(SR.ContentTypeInvalid));
}
if(exception != null){
throw new FormatException(SR.GetString(SR.ContentTypeInvalid));
}
}