public byte[] Modify(byte[] contentBytes, PdfDictionary resourcesDictionary)
{
_contentStreamBuilderStack.Push(new PdfContentStreamBuilder());
_resourceDictionaryStack.Push(resourcesDictionary);
PRTokeniser tokeniser = new PRTokeniser(new RandomAccessFileOrArray(contentBytes));
PdfContentParser ps = new PdfContentParser(tokeniser);
List <PdfObject> operands = new List <PdfObject>();
while (ps.Parse(operands).Count > 0)
{
PdfLiteral oper = (PdfLiteral)operands[operands.Count - 1];
//System.Diagnostics.Debug.WriteLine("[Debug] Opr: " + oper.ToString());
PdfContentOperatorHandler operHandler = null;
if (_operators.TryGetValue(oper.ToString(), out operHandler))
{
operands = operHandler(oper, operands);
}
_contentStreamBuilderStack.Peek().Push(operands);
}
_resourceDictionaryStack.Pop();
return(_contentStreamBuilderStack.Pop().GetBytes());
}
public void RegisterOperator(string oper, PdfContentOperatorHandler callback)
{
_operators.Add(oper, callback);
}