/// <summary>
/// Check if the chunk is present, if not it'll be created with a size of 0 if create is true
/// Additionnal chunks between the starting pos and the chunk will be deleted
/// </summary>
/// <param name="pos">starting pos for the search</param>
/// <param name="chunk">magic value of the wanted chunk</param>
/// <param name="create">if this is set to true and the chunk isn't there it will create it empty</param>
/// <returns>the new pos after the chunk</returns>
private int CheckChunk(int pos, GroupChunk chunk, bool create = true, bool delete = true)
{
int found = FindChunk(pos, chunk);
if (found == -1 && create)
{
AddEmptyBytes(pos, 8);
WriteInt(pos, (int)chunk);
return(pos + 0x8);
}
if (found > pos)
{
if (delete)
{
RemoveBytes(pos, found - pos);
}
else
{
pos = found;
}
}
if (found != -1)
{
pos += ReadInt(pos + 0x4) + 0x8;
}
// return the current pos
return(pos);
}
private int FindChunk(int pos, GroupChunk chunk)
{
int found = -1;
for (int i = pos; i + 8 <= Size(); i += (ReadInt(i + 0x4) + 0x8))
{
if (ReadInt(i) == (int)chunk)
{
found = i;
break;
}
}
return(found);
}
