private void SerObject(PdfObject obj, ByteBuffer bb, int level, IDictionary <PdfIndirectReference, byte[]>
serializedCache)
{
if (level <= 0)
{
return;
}
if (obj == null)
{
bb.Append("$Lnull");
return;
}
PdfIndirectReference reference = null;
ByteBuffer savedBb = null;
if (obj.IsIndirectReference())
{
reference = (PdfIndirectReference)obj;
byte[] cached = serializedCache.Get(reference);
if (cached != null)
{
bb.Append(cached);
return;
}
else
{
savedBb = bb;
bb = new ByteBuffer();
obj = reference.GetRefersTo();
}
}
if (obj.IsStream())
{
SerDic((PdfDictionary)obj, bb, level - 1, serializedCache);
bb.Append("$B");
if (level > 0)
{
bb.Append(md5.Digest(((PdfStream)obj).GetBytes(false)));
}
}
else
{
if (obj.IsDictionary())
{
SerDic((PdfDictionary)obj, bb, level - 1, serializedCache);
}
else
{
if (obj.IsArray())
{
SerArray((PdfArray)obj, bb, level - 1, serializedCache);
}
else
{
if (obj.IsString())
{
bb.Append("$S").Append(obj.ToString());
}
else
{
// TODO specify length for strings, streams, may be names?
if (obj.IsName())
{
bb.Append("$N").Append(obj.ToString());
}
else
{
bb.Append("$L").Append(obj.ToString());
}
}
}
}
}
// PdfNull case is also here
if (savedBb != null)
{
serializedCache.Put(reference, bb.ToByteArray());
savedBb.Append(bb.GetInternalBuffer());
}
}
/// <summary>Marks object behind wrapper to be saved as indirect.</summary>
/// <param name="document">a document the indirect reference will belong to.</param>
/// <returns>object itself.</returns>
public virtual iText.Kernel.Pdf.PdfObjectWrapper <T> MakeIndirect(PdfDocument document, PdfIndirectReference
reference)
{
GetPdfObject().MakeIndirect(document, reference);
return(this);
}
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);
}
private void LoadPage(int pageNum)
{
PdfIndirectReference targetPage = pageRefs[pageNum];
if (targetPage != null)
{
return;
}
//if we go here, we have to split PdfPages that contains pageNum
int parentIndex = FindPageParent(pageNum);
PdfPages parent = parents[parentIndex];
PdfArray kids = parent.GetKids();
if (kids == null)
{
throw new PdfException(PdfException.InvalidPageStructure1).SetMessageParams(pageNum + 1);
}
int kidsCount = parent.GetCount();
// we should handle separated pages, it means every PdfArray kids must contain either PdfPage or PdfPages,
// mix of PdfPage and PdfPages not allowed.
bool findPdfPages = false;
// NOTE optimization? when we already found needed index
for (int i = 0; i < kids.Size(); i++)
{
PdfDictionary page = kids.GetAsDictionary(i);
// null values not allowed in pages tree.
if (page == null)
{
throw new PdfException(PdfException.InvalidPageStructure1).SetMessageParams(pageNum + 1);
}
PdfObject pageKids = page.Get(PdfName.Kids);
if (pageKids != null)
{
if (pageKids.IsArray())
{
findPdfPages = true;
}
else
{
// kids must be of type array
throw new PdfException(PdfException.InvalidPageStructure1).SetMessageParams(pageNum + 1);
}
}
}
if (findPdfPages)
{
// handle mix of PdfPage and PdfPages.
// handle count property!
IList <PdfPages> newParents = new List <PdfPages>(kids.Size());
PdfPages lastPdfPages = null;
for (int i = 0; i < kids.Size() && kidsCount > 0; i++)
{
PdfDictionary pdfPagesObject = kids.GetAsDictionary(i);
if (pdfPagesObject.GetAsArray(PdfName.Kids) == null)
{
// pdfPagesObject is PdfPage
// possible if only first kid is PdfPage
if (lastPdfPages == null)
{
lastPdfPages = new PdfPages(parent.GetFrom(), document, parent);
kids.Set(i, lastPdfPages.GetPdfObject());
newParents.Add(lastPdfPages);
}
else
{
// Only remove from kids if we did not replace the entry with new PdfPages
kids.Remove(i);
i--;
}
// decrement count first so that page is not counted twice when moved to lastPdfPages
parent.DecrementCount();
lastPdfPages.AddPage(pdfPagesObject);
kidsCount--;
}
else
{
// pdfPagesObject is PdfPages
int from = lastPdfPages == null?parent.GetFrom() : lastPdfPages.GetFrom() + lastPdfPages.GetCount();
lastPdfPages = new PdfPages(from, kidsCount, pdfPagesObject, parent);
newParents.Add(lastPdfPages);
kidsCount -= lastPdfPages.GetCount();
}
}
parents.JRemoveAt(parentIndex);
for (int i = newParents.Count - 1; i >= 0; i--)
{
parents.Add(parentIndex, newParents[i]);
}
// recursive call, to load needed pageRef.
// NOTE optimization? add to loadPage startParentIndex.
LoadPage(pageNum);
}
else
{
int from = parent.GetFrom();
// Possible exception in case kids.getSize() < parent.getCount().
// In any case parent.getCount() has higher priority.
// NOTE optimization? when we already found needed index
for (int i = 0; i < parent.GetCount(); i++)
{
PdfDictionary kid = kids.GetAsDictionary(i);
// make sure it's a dictionary
if (kid != null)
{
pageRefs[from + i] = kid.GetIndirectReference();
}
}
}
}
public virtual void PrimitivesTest()
{
String data = "<</Size 70." + "/Value#20 .1" + "/Root 46 0 R" + "/Info 44 0 R" + "/ID[<736f6d652068657820737472696e672>(some simple string )<8C2547D58D4BD2C6F3D32B830BE3259D2>-70.1--0.2]"
+ "/Name1 --15" + "/Prev ---116.23 >>";
RandomAccessSourceFactory factory = new RandomAccessSourceFactory();
PdfTokenizer tok = new PdfTokenizer(new RandomAccessFileOrArray(factory.CreateSource(data.GetBytes(iText.IO.Util.EncodingUtil.ISO_8859_1
))));
tok.NextValidToken();
NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.StartDic);
tok.NextValidToken();
NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.Name);
PdfName name = new PdfName(tok.GetByteContent());
NUnit.Framework.Assert.AreEqual("Size", name.GetValue());
tok.NextValidToken();
NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.Number);
PdfNumber num = new PdfNumber(tok.GetByteContent());
NUnit.Framework.Assert.AreEqual("70.", num.ToString());
tok.NextValidToken();
NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.Name);
name = new PdfName(tok.GetByteContent());
NUnit.Framework.Assert.AreEqual("Value ", name.GetValue());
tok.NextValidToken();
NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.Number);
num = new PdfNumber(tok.GetByteContent());
NUnit.Framework.Assert.AreNotSame("0.1", num.ToString());
tok.NextValidToken();
NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.Name);
name = new PdfName(tok.GetByteContent());
NUnit.Framework.Assert.AreEqual("Root", name.GetValue());
tok.NextValidToken();
NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.Ref);
PdfIndirectReference @ref = new PdfIndirectReference(null, tok.GetObjNr(), tok.GetGenNr());
NUnit.Framework.Assert.AreEqual("46 0 R", @ref.ToString());
tok.NextValidToken();
NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.Name);
name = new PdfName(tok.GetByteContent());
NUnit.Framework.Assert.AreEqual("Info", name.GetValue());
tok.NextValidToken();
NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.Ref);
@ref = new PdfIndirectReference(null, tok.GetObjNr(), tok.GetGenNr());
NUnit.Framework.Assert.AreEqual("44 0 R", @ref.ToString());
tok.NextValidToken();
NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.Name);
name = new PdfName(tok.GetByteContent());
NUnit.Framework.Assert.AreEqual("ID", name.GetValue());
tok.NextValidToken();
NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.StartArray);
tok.NextValidToken();
NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.String);
NUnit.Framework.Assert.AreEqual(tok.IsHexString(), true);
PdfString str = new PdfString(tok.GetByteContent(), tok.IsHexString());
NUnit.Framework.Assert.AreEqual("some hex string ", str.GetValue());
tok.NextValidToken();
NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.String);
NUnit.Framework.Assert.AreEqual(tok.IsHexString(), false);
str = new PdfString(tok.GetByteContent(), tok.IsHexString());
NUnit.Framework.Assert.AreEqual("some simple string ", str.GetValue());
tok.NextValidToken();
NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.String);
NUnit.Framework.Assert.AreEqual(tok.IsHexString(), true);
str = new PdfString(tok.GetByteContent(), tok.IsHexString());
NUnit.Framework.Assert.AreEqual("\u008C%G\u00D5\u008DK\u00D2\u00C6\u00F3\u00D3+\u0083\u000B\u00E3%\u009D "
, str.GetValue());
tok.NextValidToken();
NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.Number);
num = new PdfNumber(tok.GetByteContent());
NUnit.Framework.Assert.AreEqual("-70.1", num.ToString());
tok.NextValidToken();
NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.Number);
num = new PdfNumber(tok.GetByteContent());
NUnit.Framework.Assert.AreEqual("-0.2", num.ToString());
tok.NextValidToken();
NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.EndArray);
tok.NextValidToken();
NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.Name);
name = new PdfName(tok.GetByteContent());
NUnit.Framework.Assert.AreEqual("Name1", name.GetValue());
tok.NextValidToken();
NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.Number);
num = new PdfNumber(tok.GetByteContent());
NUnit.Framework.Assert.AreEqual("0", num.ToString());
tok.NextValidToken();
NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.Name);
name = new PdfName(tok.GetByteContent());
NUnit.Framework.Assert.AreEqual("Prev", name.GetValue());
tok.NextValidToken();
NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.Number);
num = new PdfNumber(tok.GetByteContent());
NUnit.Framework.Assert.AreEqual("-116.23", num.ToString());
}
/// <summary>Marks object to be saved as indirect.</summary>
/// <param name="document">a document the indirect reference will belong to.</param>
/// <returns>object itself.</returns>
public override PdfObject MakeIndirect(PdfDocument document, PdfIndirectReference reference)
{
return((iText.Kernel.Pdf.PdfNull)base.MakeIndirect(document, reference));
}
protected internal virtual PdfObject SetIndirectReference(PdfIndirectReference indirectReference)
{
this.indirectReference = indirectReference;
return(this);
}
/// <summary>Indicates is the object has been set as modified or not.</summary>
/// <remarks>Indicates is the object has been set as modified or not. Useful for incremental updates (e.g. appendMode).
/// </remarks>
/// <returns>true is object has been set as modified, otherwise false.</returns>
public virtual bool IsModified()
{
PdfIndirectReference indirectReference = GetIndirectReference();
return(indirectReference != null && indirectReference.CheckState(MODIFIED));
}
/// <summary>Indicates is the object has been flushed or not.</summary>
/// <returns>true is object has been flushed, otherwise false.</returns>
public virtual bool IsFlushed()
{
PdfIndirectReference indirectReference = GetIndirectReference();
return(indirectReference != null && indirectReference.CheckState(FLUSHED));
}
private void SerObject(PdfObject obj, int level, ByteBufferOutputStream bb, IntHashtable serialized)
{
if (level <= 0)
{
return;
}
if (obj == null)
{
bb.Append("$Lnull");
return;
}
PdfIndirectReference reference = null;
ByteBufferOutputStream savedBb = null;
if (obj.IsIndirectReference())
{
reference = (PdfIndirectReference)obj;
int key = GetCopyObjectKey(obj);
if (serialized.ContainsKey(key))
{
bb.Append((int)serialized.Get(key));
return;
}
else
{
savedBb = bb;
bb = new ByteBufferOutputStream();
}
}
if (obj.IsStream())
{
bb.Append("$B");
SerDic((PdfDictionary)obj, level - 1, bb, serialized);
if (level > 0)
{
md5.Reset();
bb.Append(md5.Digest(((PdfStream)obj).GetBytes(false)));
}
}
else
{
if (obj.IsDictionary())
{
SerDic((PdfDictionary)obj, level - 1, bb, serialized);
}
else
{
if (obj.IsArray())
{
SerArray((PdfArray)obj, level - 1, bb, serialized);
}
else
{
if (obj.IsString())
{
bb.Append("$S").Append(obj.ToString());
}
else
{
if (obj.IsName())
{
bb.Append("$N").Append(obj.ToString());
}
else
{
bb.Append("$L").Append(obj.ToString());
}
}
}
}
}
if (savedBb != null)
{
int key = GetCopyObjectKey(reference);
if (!serialized.ContainsKey(key))
{
serialized.Put(key, CalculateHash(bb.GetBuffer()));
}
savedBb.Append(bb);
}
}
