public virtual void SmartModeObjectSelfReferencingTest()
{
PdfDocument document = new PdfDocument(new PdfWriter(new MemoryStream()));
PdfDictionary dict1 = new PdfDictionary();
dict1.MakeIndirect(document);
PdfDictionary dict2 = new PdfDictionary();
dict2.MakeIndirect(document);
PdfArray array = new PdfArray();
array.MakeIndirect(document);
array.Add(new PdfString(new byte[10000]));
array.Add(new PdfDictionary(dict2));
dict1.Put(new PdfName("FirstDict"), array.GetIndirectReference());
dict2.Put(new PdfName("SecondDict"), dict1.GetIndirectReference());
SmartModePdfObjectsSerializer serializer = new SmartModePdfObjectsSerializer();
SerializedObjectContent serializedObject = serializer.SerializeObject(dict1);
//It is essential to serialize object with huge amount of memory
StringBuilder stringBytes = new StringBuilder().Append("$D$N/FirstDict$A$S");
String end = "$D$\\D$\\A$\\D";
for (int i = 0; i < 10000; i++)
{
stringBytes.Append("\x0");
}
stringBytes.Append(end);
SerializedObjectContent expected = new SerializedObjectContent(stringBytes.ToString().GetBytes(System.Text.Encoding
.UTF8));
NUnit.Framework.Assert.AreEqual(expected, serializedObject);
}
public virtual PdfIndirectReference GetSavedSerializedObject(SerializedObjectContent serializedContent)
{
if (serializedContent != null)
{
return(serializedContentToObj.Get(serializedContent));
}
return(null);
}
public virtual void SaveSerializedObject(SerializedObjectContent serializedContent, PdfIndirectReference objectReference
)
{
serializedContentToObj.Put(serializedContent, objectReference);
}
protected internal virtual PdfObject CopyObject(PdfObject obj, PdfDocument documentTo, bool allowDuplicating
)
{
if (obj is PdfIndirectReference)
{
obj = ((PdfIndirectReference)obj).GetRefersTo();
}
if (obj == null)
{
obj = PdfNull.PDF_NULL;
}
if (CheckTypeOfPdfDictionary(obj, PdfName.Catalog))
{
ILog logger = LogManager.GetLogger(typeof(PdfReader));
logger.Warn(iText.IO.LogMessageConstant.MAKE_COPY_OF_CATALOG_DICTIONARY_IS_FORBIDDEN);
obj = PdfNull.PDF_NULL;
}
PdfIndirectReference indirectReference = obj.GetIndirectReference();
PdfDocument.IndirectRefDescription copiedObjectKey = null;
bool tryToFindDuplicate = !allowDuplicating && indirectReference != null;
if (tryToFindDuplicate)
{
copiedObjectKey = new PdfDocument.IndirectRefDescription(indirectReference);
PdfIndirectReference copiedIndirectReference = copiedObjects.Get(copiedObjectKey);
if (copiedIndirectReference != null)
{
return(copiedIndirectReference.GetRefersTo());
}
}
SerializedObjectContent serializedContent = null;
if (properties.smartMode && tryToFindDuplicate && !CheckTypeOfPdfDictionary(obj, PdfName.Page))
{
serializedContent = smartModeSerializer.SerializeObject(obj);
PdfIndirectReference objectRef = smartModeSerializer.GetSavedSerializedObject(serializedContent);
if (objectRef != null)
{
copiedObjects.Put(copiedObjectKey, objectRef);
return(objectRef.refersTo);
}
}
PdfObject newObject = obj.NewInstance();
if (indirectReference != null)
{
if (copiedObjectKey == null)
{
copiedObjectKey = new PdfDocument.IndirectRefDescription(indirectReference);
}
PdfIndirectReference indRef = newObject.MakeIndirect(documentTo).GetIndirectReference();
if (serializedContent != null)
{
smartModeSerializer.SaveSerializedObject(serializedContent, indRef);
}
copiedObjects.Put(copiedObjectKey, indRef);
}
newObject.CopyContent(obj, documentTo);
return(newObject);
}