/// <summary>
/// Opens a new PDF document for writing to appending as a overwrite of the original file if provided, and copying the content of the original file as specified.
/// </summary>
/// <param name="orig"></param>
/// <param name="copytoDestination"></param>
public override void OpenDocument(PDFFile orig, bool copytoDestination)
{
PDFXRefTable prev = null;
int startindex = 0;
int gen = 0;
if (null != orig)
{
if (copytoDestination)
{
orig.WriteTo(this.BaseStream);
}
prev = orig.DocumentXRefs;
startindex = prev.MaxReference + 1;
gen = prev.Generation;
}
this.InitXRefTable(startindex, gen, prev);
}