public virtual void ChangeIdTest03()
{
MemoryStream baosInitial = new MemoryStream();
MemoryStream baosModified = new MemoryStream();
IDigest md5;
try {
md5 = DigestUtilities.GetDigest("MD5");
}
catch (Exception e) {
throw new PdfException(e);
}
PdfString initialId = new PdfString(md5.Digest("Initial ID 56789".GetBytes()));
PdfString modifiedId = new PdfString("Modified ID 56789");
PdfWriter writer = new PdfWriter(baosInitial, new WriterProperties().SetInitialDocumentId(initialId).SetModifiedDocumentId
(modifiedId));
PdfDocument pdfDocument = new PdfDocument(writer);
pdfDocument.AddNewPage();
pdfDocument.Close();
PdfReader reader = new PdfReader(new RandomAccessSourceFactory().CreateSource(baosInitial.ToArray()), new
ReaderProperties());
pdfDocument = new PdfDocument(reader);
PdfArray idArray = pdfDocument.GetTrailer().GetAsArray(PdfName.ID);
pdfDocument.Close();
NUnit.Framework.Assert.IsNotNull(idArray);
PdfString extractedInitialValue = idArray.GetAsString(0);
NUnit.Framework.Assert.AreEqual(initialId, extractedInitialValue);
PdfString extractedModifiedValue = idArray.GetAsString(1);
NUnit.Framework.Assert.AreEqual(modifiedId, extractedModifiedValue);
pdfDocument = new PdfDocument(new PdfReader(new RandomAccessSourceFactory().CreateSource(baosInitial.ToArray
()), new ReaderProperties()), new PdfWriter(baosModified));
new PdfCanvas(pdfDocument.AddNewPage()).SaveState().LineTo(100, 100).MoveTo(100, 100).Stroke().RestoreState
();
pdfDocument.Close();
reader = new PdfReader(new RandomAccessSourceFactory().CreateSource(baosModified.ToArray()), new ReaderProperties
());
pdfDocument = new PdfDocument(reader);
idArray = pdfDocument.GetTrailer().GetAsArray(PdfName.ID);
pdfDocument.Close();
NUnit.Framework.Assert.IsNotNull(idArray);
extractedInitialValue = idArray.GetAsString(0);
NUnit.Framework.Assert.AreEqual(initialId, extractedInitialValue);
extractedModifiedValue = idArray.GetAsString(1);
NUnit.Framework.Assert.AreNotEqual(modifiedId, extractedModifiedValue);
}
public virtual void ChangeIdTest02()
{
MemoryStream baos = new MemoryStream();
IDigest md5;
try {
md5 = DigestUtilities.GetDigest("MD5");
}
catch (Exception e) {
throw new PdfException(e);
}
PdfString initialId = new PdfString(md5.Digest("Initial ID 56789".GetBytes()));
PdfWriter writer = new PdfWriter(baos, new WriterProperties().SetInitialDocumentId(initialId));
PdfDocument pdfDocument = new PdfDocument(writer);
pdfDocument.AddNewPage();
pdfDocument.Close();
byte[] documentBytes = baos.ToArray();
baos.Dispose();
PdfReader reader = new PdfReader(new MemoryStream(documentBytes));
pdfDocument = new PdfDocument(reader);
PdfArray idArray = pdfDocument.GetTrailer().GetAsArray(PdfName.ID);
NUnit.Framework.Assert.IsNotNull(idArray);
PdfString extractedString = idArray.GetAsString(1);
pdfDocument.Close();
NUnit.Framework.Assert.AreEqual(initialId, extractedString);
}
public virtual void ChangeIdTest()
{
MemoryStream baos = new MemoryStream();
String value = "Modified ID 1234";
WriterProperties writerProperties = new WriterProperties();
writerProperties.SetModifiedDocumentId(new PdfString((value)));
PdfWriter writer = new PdfWriter(baos, writerProperties);
PdfDocument pdfDocument = new PdfDocument(writer);
pdfDocument.AddNewPage();
pdfDocument.Close();
byte[] documentBytes = baos.ToArray();
baos.Dispose();
PdfReader reader = new PdfReader(new MemoryStream(documentBytes));
pdfDocument = new PdfDocument(reader);
PdfArray idArray = pdfDocument.GetTrailer().GetAsArray(PdfName.ID);
NUnit.Framework.Assert.IsNotNull(idArray);
String extractedValue = idArray.GetAsString(1).GetValue();
pdfDocument.Close();
NUnit.Framework.Assert.AreEqual(value, extractedValue);
}
private PdfString IterateItems(PdfDictionary dictionary, IDictionary <String, PdfObject> items, PdfString leftOver
)
{
PdfArray names = dictionary.GetAsArray(PdfName.Names);
if (names != null)
{
for (int k = 0; k < names.Size(); k++)
{
PdfString name;
if (leftOver == null)
{
name = names.GetAsString(k++);
}
else
{
name = leftOver;
leftOver = null;
}
if (k < names.Size())
{
items.Put(name.ToUnicodeString(), names.Get(k));
}
else
{
return(name);
}
}
}
else
{
if ((names = dictionary.GetAsArray(PdfName.Kids)) != null)
{
for (int k = 0; k < names.Size(); k++)
{
PdfDictionary kid = names.GetAsDictionary(k);
leftOver = IterateItems(kid, items, leftOver);
}
}
}
return(null);
}
