public bool TryParseData(ReadOnlySpan <char> span)
{
var scanned = -1;
var position = 0;
if (!ParseChunk(ref span, ref scanned, ref position).Equals(ProtocolVersionString, StringComparison.OrdinalIgnoreCase))
{
return(false);
}
if (!int.TryParse(ParseChunk(ref span, ref scanned, ref position), out _))
{
return(false);
}
if (!int.TryParse(ParseChunk(ref span, ref scanned, ref position), out var origin))
{
return(false);
}
else
{
Origin = origin;
}
if (!int.TryParse(ParseChunk(ref span, ref scanned, ref position), out var dataItemsCount))
{
return(false);
}
Span <int> offsets = dataItemsCount * 4 < 1024 ? stackalloc int[dataItemsCount] : new int[dataItemsCount];
//Count from 4th item to second last item. Those are the offsets.
for (var i = 0; i < dataItemsCount; i++)
{
if (!int.TryParse(ParseChunk(ref span, ref scanned, ref position), out var offset))
{
return(false);
}
else
{
offsets[i] = offset;
}
}
//Set the datastring, its the last item in the list. If it contained any separators, they will get read here:
scanned += position + 1;
var dataString = span.Slice(scanned, span.Length - scanned);
//Cutting the data:
for (var i = 0; i < offsets.Length; i++)
{
var cOffset = offsets[i];
var length = dataString.Length - cOffset;
if (i < offsets.Length - 1)
{
length = offsets[i + 1] - cOffset;
}
if (length < 0)
{
return(false);
}
if (cOffset + length > dataString.Length)
{
return(false);
}
DataItems.AddToEnd(dataString.Slice(cOffset, length));
}
return(true);
}
