internal void SetAttribute <T>(RadiusAttributeParser <T> parser, int index, T value)
{
// check for not read-only
EnsureWritable();
// determine offset and old length
var offset = OffsetsFromParser(parser)[index];
var oldLength = buffer[offset + 1];
// parse value into byte array
var attribute = parser.Write(value);
var newLength = attribute.Length + 2;
if (newLength > byte.MaxValue)
{
throw new ArgumentOutOfRangeException("value");
}
// prepare buffer if necessary
if (oldLength != newLength)
{
CorrectOffsets(offset + oldLength, newLength - oldLength);
}
// write attribute
buffer[offset] = parser.Type;
buffer[offset + 1] = (byte)newLength;
Array.Copy(attribute, 0, buffer, offset + 2, attribute.Length);
}
internal void InsertAttribute <T>(RadiusAttributeParser <T> parser, int index, T item)
{
// check for not read-only
EnsureWritable();
// determine offset
var offsets = OffsetsFromParser(parser);
var offset = index == offsets.Count ? Length : offsets[index];
// parse value into a byte array
var attribute = parser.Write(item);
var length = attribute.Length + 2;
if (length > byte.MaxValue)
{
throw new ArgumentOutOfRangeException("item");
}
// prepare buffer
CorrectOffsets(offset, length);
// write attribute
buffer[offset] = parser.Type;
buffer[offset + 1] = (byte)length;
Array.Copy(attribute, 0, buffer, offset + 2, length - 2);
// store offset
offsets.Insert(index, offset);
}