public MetaBuilderPointer AddString(string str)
{
str = str ?? "";
MetaBuilderBlock block = EnsureBlock(MetaName.STRING);
byte[] data = Encoding.ASCII.GetBytes(str);
int datalen = data.Length;
int newlen = datalen;
int lenrem = newlen % 16;
if (lenrem != 0) //need to pad the data length up to multiple of 16.
{
newlen += (16 - lenrem);
}
byte[] newdata = new byte[newlen];
Buffer.BlockCopy(data, 0, newdata, 0, datalen);
int offs = block.TotalSize;
int idx = block.AddItem(newdata);
MetaBuilderPointer r = new MetaBuilderPointer();
r.BlockID = block.Index + 1;
r.Offset = offs; // (idx * data.Length);
r.Length = datalen; //actual length of string.
return(r);
}
public MetaBuilderPointer AddItem(MetaName type, byte[] data)
{
MetaBuilderBlock block = EnsureBlock(type);
int brem = data.Length % 16;
if (brem > 0)
{
int newlen = data.Length - brem + 16;
byte[] newdata = new byte[newlen];
Buffer.BlockCopy(data, 0, newdata, 0, data.Length);
data = newdata; //make sure item size is multiple of 16... so pointers don't need sub offsets!
}
int idx = block.AddItem(data);
MetaBuilderPointer r = new MetaBuilderPointer();
r.BlockID = block.Index + 1;
r.Offset = (idx * data.Length);
r.Length = data.Length;
return(r);
}
public MetaBuilderPointer AddItemArray(MetaName type, byte[] data, int length)
{
MetaBuilderBlock block = EnsureBlock(type);
int datalen = data.Length;
int newlen = datalen;
int lenrem = newlen % 16;
if (lenrem != 0)
{
newlen += (16 - lenrem);
}
byte[] newdata = new byte[newlen];
Buffer.BlockCopy(data, 0, newdata, 0, datalen);
int offs = block.TotalSize;
int idx = block.AddItem(newdata);
MetaBuilderPointer r = new MetaBuilderPointer();
r.BlockID = block.Index + 1;
r.Offset = offs; //(idx * data.Length);;
r.Length = length;
return(r);
}