private static void CopyDArrayField(PdfName fieldToCopy, ICollection<PdfIndirectReference> fromOcgsToCopy,
PdfDictionary fromDict, PdfDictionary toDict, PdfDocument toDocument) {
if (fromDict.GetAsArray(fieldToCopy) == null) {
return;
}
PdfArray fromArray = fromDict.GetAsArray(fieldToCopy);
if (toDict.GetAsArray(fieldToCopy) == null) {
toDict.Put(fieldToCopy, new PdfArray());
}
PdfArray toArray = toDict.GetAsArray(fieldToCopy);
ICollection<PdfIndirectReference> toOcgsToCopy = new HashSet<PdfIndirectReference>();
foreach (PdfIndirectReference fromRef in fromOcgsToCopy) {
toOcgsToCopy.Add(fromRef.GetRefersTo().CopyTo(toDocument, false).GetIndirectReference());
}
if (PdfName.Order.Equals(fieldToCopy)) {
// Stage 1: delete all Order the entire branches from the output document in which the copied OCGs were
IList<int> removeIndex = new List<int>();
for (int i = 0; i < toArray.Size(); i++) {
PdfObject toOrderItem = toArray.Get(i);
if (iText.Kernel.Pdf.OcgPropertiesCopier.OrderBranchContainsSetElements(toOrderItem, toArray, i, toOcgsToCopy
, null, null)) {
removeIndex.Add(i);
}
}
for (int i = removeIndex.Count - 1; i > -1; i--) {
toArray.Remove(removeIndex[i]);
}
PdfArray toOcgs = toDocument.GetCatalog().GetPdfObject().GetAsDictionary(PdfName.OCProperties).GetAsArray(
PdfName.OCGs);
// Stage 2: copy all the Order the entire branches in which the copied OСGs were
for (int i = 0; i < fromArray.Size(); i++) {
PdfObject fromOrderItem = fromArray.Get(i);
if (iText.Kernel.Pdf.OcgPropertiesCopier.OrderBranchContainsSetElements(fromOrderItem, fromArray, i, fromOcgsToCopy
, toOcgs, toDocument)) {
toArray.Add(fromOrderItem.CopyTo(toDocument, false));
}
}
}
else {
// Stage 3: remove from Order OCGs not presented in the output document. When forming
// the Order dictionary in the PdfOcProperties constructor, only those OCGs that are
// in the OCProperties/OCGs array will be taken into account
if (PdfName.RBGroups.Equals(fieldToCopy)) {
// Stage 1: delete all RBGroups from the output document in which the copied OCGs were
for (int i = toArray.Size() - 1; i > -1; i--) {
PdfArray toRbGroup = (PdfArray)toArray.Get(i);
foreach (PdfObject toRbGroupItemObj in toRbGroup) {
if (toOcgsToCopy.Contains(toRbGroupItemObj.GetIndirectReference())) {
toArray.Remove(i);
break;
}
}
}
// Stage 2: copy all the RBGroups in which the copied OCGs were
foreach (PdfObject fromRbGroupObj in fromArray) {
PdfArray fromRbGroup = (PdfArray)fromRbGroupObj;
foreach (PdfObject fromRbGroupItemObj in fromRbGroup) {
if (fromOcgsToCopy.Contains(fromRbGroupItemObj.GetIndirectReference())) {
toArray.Add(fromRbGroup.CopyTo(toDocument, false));
break;
}
}
}
}
else {
// Stage 3: remove from RBGroups OCGs not presented in the output
// document (is in the PdfOcProperties#fillDictionary method)
foreach (PdfObject fromObj in fromArray) {
iText.Kernel.Pdf.OcgPropertiesCopier.AttemptToAddObjectToArray(fromOcgsToCopy, fromObj, toArray, toDocument
);
}
}
}
if (toArray.IsEmpty()) {
toDict.Remove(fieldToCopy);
}
}
/// <summary>Writes cross reference table and trailer to PDF.</summary>
protected internal virtual void WriteXrefTableAndTrailer(PdfDocument document, PdfObject fileId, PdfObject
crypto)
{
PdfWriter writer = document.GetWriter();
if (!document.properties.appendMode)
{
for (int i = count; i > 0; --i)
{
PdfIndirectReference lastRef = xref[i];
if (lastRef == null || lastRef.IsFree())
{
RemoveFreeRefFromList(i);
--count;
}
else
{
break;
}
}
}
PdfStream xrefStream = null;
if (writer.IsFullCompression())
{
xrefStream = new PdfStream();
xrefStream.MakeIndirect(document);
}
IList <int> sections = CreateSections(document, false);
bool noModifiedObjects = (sections.Count == 0) || (xrefStream != null && sections.Count == 2 && sections[0
] == count && sections[1] == 1);
if (document.properties.appendMode && noModifiedObjects)
{
// No modifications in document
xref = null;
return;
}
long startxref = writer.GetCurrentPos();
long xRefStmPos = -1;
if (xrefStream != null)
{
xrefStream.Put(PdfName.Type, PdfName.XRef);
xrefStream.Put(PdfName.ID, fileId);
if (crypto != null)
{
xrefStream.Put(PdfName.Encrypt, crypto);
}
xrefStream.Put(PdfName.Size, new PdfNumber(this.Size()));
int offsetSize = GetOffsetSize(Math.Max(startxref, Size()));
xrefStream.Put(PdfName.W, new PdfArray(JavaUtil.ArraysAsList((PdfObject) new PdfNumber(1), new PdfNumber(offsetSize
), new PdfNumber(2))));
xrefStream.Put(PdfName.Info, document.GetDocumentInfo().GetPdfObject());
xrefStream.Put(PdfName.Root, document.GetCatalog().GetPdfObject());
PdfArray index = new PdfArray();
foreach (int?section in sections)
{
index.Add(new PdfNumber((int)section));
}
if (document.properties.appendMode && !document.reader.hybridXref)
{
// "not meaningful in hybrid-reference files"
PdfNumber lastXref = new PdfNumber(document.reader.GetLastXref());
xrefStream.Put(PdfName.Prev, lastXref);
}
xrefStream.Put(PdfName.Index, index);
xrefStream.GetIndirectReference().SetOffset(startxref);
iText.Kernel.Pdf.PdfXrefTable xrefTable = document.GetXref();
for (int k = 0; k < sections.Count; k += 2)
{
int first = (int)sections[k];
int len = (int)sections[k + 1];
for (int i = first; i < first + len; i++)
{
PdfIndirectReference reference = xrefTable.Get(i);
if (reference.IsFree())
{
xrefStream.GetOutputStream().Write(0);
xrefStream.GetOutputStream().Write(reference.GetOffset(), offsetSize);
xrefStream.GetOutputStream().Write(reference.GetGenNumber(), 2);
}
else
{
if (reference.GetObjStreamNumber() == 0)
{
xrefStream.GetOutputStream().Write(1);
xrefStream.GetOutputStream().Write(reference.GetOffset(), offsetSize);
xrefStream.GetOutputStream().Write(reference.GetGenNumber(), 2);
}
else
{
xrefStream.GetOutputStream().Write(2);
xrefStream.GetOutputStream().Write(reference.GetObjStreamNumber(), offsetSize);
xrefStream.GetOutputStream().Write(reference.GetIndex(), 2);
}
}
}
}
xrefStream.Flush();
xRefStmPos = startxref;
}
// For documents with hybrid cross-reference table, i.e. containing xref streams as well as regular xref sections,
// we write additional regular xref section at the end of the document because the /Prev reference from
// xref stream to a regular xref section doesn't seem to be valid
bool needsRegularXref = !writer.IsFullCompression() || (document.properties.appendMode && document.reader.
hybridXref);
if (needsRegularXref)
{
startxref = writer.GetCurrentPos();
writer.WriteString("xref\n");
iText.Kernel.Pdf.PdfXrefTable xrefTable = document.GetXref();
if (xRefStmPos != -1)
{
// Get rid of all objects from object stream. This is done for hybrid documents
sections = CreateSections(document, true);
}
for (int k = 0; k < sections.Count; k += 2)
{
int first = (int)sections[k];
int len = (int)sections[k + 1];
writer.WriteInteger(first).WriteSpace().WriteInteger(len).WriteByte((byte)'\n');
for (int i = first; i < first + len; i++)
{
PdfIndirectReference reference = xrefTable.Get(i);
StringBuilder off = new StringBuilder("0000000000").Append(reference.GetOffset());
StringBuilder gen = new StringBuilder("00000").Append(reference.GetGenNumber());
writer.WriteString(off.JSubstring(off.Length - 10, off.Length)).WriteSpace().WriteString(gen.JSubstring(gen
.Length - 5, gen.Length)).WriteSpace();
if (reference.IsFree())
{
writer.WriteBytes(freeXRefEntry);
}
else
{
writer.WriteBytes(inUseXRefEntry);
}
}
}
PdfDictionary trailer = document.GetTrailer();
// Remove all unused keys in case stamp mode in case original file has full compression, but destination file has not.
trailer.Remove(PdfName.W);
trailer.Remove(PdfName.Index);
trailer.Remove(PdfName.Type);
trailer.Remove(PdfName.Length);
trailer.Put(PdfName.Size, new PdfNumber(this.Size()));
trailer.Put(PdfName.ID, fileId);
if (xRefStmPos != -1)
{
trailer.Put(PdfName.XRefStm, new PdfNumber(xRefStmPos));
}
if (crypto != null)
{
trailer.Put(PdfName.Encrypt, crypto);
}
writer.WriteString("trailer\n");
if (document.properties.appendMode)
{
PdfNumber lastXref = new PdfNumber(document.reader.GetLastXref());
trailer.Put(PdfName.Prev, lastXref);
}
writer.Write(document.GetTrailer());
writer.Write('\n');
}
WriteKeyInfo(document);
writer.WriteString("startxref\n").WriteLong(startxref).WriteString("\n%%EOF\n");
xref = null;
freeReferencesLinkedList.Clear();
}
/// <summary>Writes cross reference table and trailer to PDF.</summary>
/// <exception cref="System.IO.IOException"/>
protected internal virtual void WriteXrefTableAndTrailer(PdfDocument document, PdfObject fileId, PdfObject
crypto)
{
PdfWriter writer = document.GetWriter();
if (!document.properties.appendMode)
{
for (int i = count; i > 0; --i)
{
PdfIndirectReference lastRef = xref[i];
if (lastRef == null || lastRef.IsFree())
{
RemoveFreeRefFromList(i);
--count;
}
else
{
break;
}
}
}
IList <int> sections = new List <int>();
int first = 0;
int len = 0;
for (int i = 0; i < Size(); i++)
{
PdfIndirectReference reference = xref[i];
if (document.properties.appendMode && reference != null && !reference.CheckState(PdfObject.MODIFIED))
{
reference = null;
}
if (reference == null)
{
if (len > 0)
{
sections.Add(first);
sections.Add(len);
}
len = 0;
}
else
{
if (len > 0)
{
len++;
}
else
{
first = i;
len = 1;
}
}
}
if (len > 0)
{
sections.Add(first);
sections.Add(len);
}
if (document.properties.appendMode && sections.Count == 0)
{
// no modifications.
xref = null;
return;
}
long startxref = writer.GetCurrentPos();
if (writer.IsFullCompression())
{
PdfStream xrefStream = (PdfStream) new PdfStream().MakeIndirect(document);
xrefStream.MakeIndirect(document);
xrefStream.Put(PdfName.Type, PdfName.XRef);
xrefStream.Put(PdfName.ID, fileId);
if (crypto != null)
{
xrefStream.Put(PdfName.Encrypt, crypto);
}
xrefStream.Put(PdfName.Size, new PdfNumber(this.Size()));
int offsetSize = GetOffsetSize(Math.Max(startxref, Size()));
xrefStream.Put(PdfName.W, new PdfArray(JavaUtil.ArraysAsList((PdfObject) new PdfNumber(1), new PdfNumber(offsetSize
), new PdfNumber(2))));
xrefStream.Put(PdfName.Info, document.GetDocumentInfo().GetPdfObject());
xrefStream.Put(PdfName.Root, document.GetCatalog().GetPdfObject());
PdfArray index = new PdfArray();
foreach (int?section in sections)
{
index.Add(new PdfNumber((int)section));
}
if (document.properties.appendMode)
{
PdfNumber lastXref = new PdfNumber(document.reader.GetLastXref());
xrefStream.Put(PdfName.Prev, lastXref);
}
xrefStream.Put(PdfName.Index, index);
iText.Kernel.Pdf.PdfXrefTable xrefTable = document.GetXref();
for (int k = 0; k < sections.Count; k += 2)
{
first = (int)sections[k];
len = (int)sections[k + 1];
for (int i = first; i < first + len; i++)
{
PdfIndirectReference reference = xrefTable.Get(i);
if (reference.IsFree())
{
xrefStream.GetOutputStream().Write(0);
xrefStream.GetOutputStream().Write(reference.GetOffset(), offsetSize);
xrefStream.GetOutputStream().Write(reference.GetGenNumber(), 2);
}
else
{
if (reference.GetObjStreamNumber() == 0)
{
xrefStream.GetOutputStream().Write(1);
xrefStream.GetOutputStream().Write(reference.GetOffset(), offsetSize);
xrefStream.GetOutputStream().Write(reference.GetGenNumber(), 2);
}
else
{
xrefStream.GetOutputStream().Write(2);
xrefStream.GetOutputStream().Write(reference.GetObjStreamNumber(), offsetSize);
xrefStream.GetOutputStream().Write(reference.GetIndex(), 2);
}
}
}
}
xrefStream.Flush();
}
else
{
writer.WriteString("xref\n");
iText.Kernel.Pdf.PdfXrefTable xrefTable = document.GetXref();
for (int k = 0; k < sections.Count; k += 2)
{
first = (int)sections[k];
len = (int)sections[k + 1];
writer.WriteInteger(first).WriteSpace().WriteInteger(len).WriteByte((byte)'\n');
for (int i = first; i < first + len; i++)
{
PdfIndirectReference reference = xrefTable.Get(i);
StringBuilder off = new StringBuilder("0000000000").Append(reference.GetOffset());
StringBuilder gen = new StringBuilder("00000").Append(reference.GetGenNumber());
writer.WriteString(off.JSubstring(off.Length - 10, off.Length)).WriteSpace().WriteString(gen.JSubstring(gen
.Length - 5, gen.Length)).WriteSpace();
if (reference.IsFree())
{
writer.WriteBytes(freeXRefEntry);
}
else
{
writer.WriteBytes(inUseXRefEntry);
}
}
}
PdfDictionary trailer = document.GetTrailer();
// Remove all unused keys in case stamp mode in case original file has full compression, but destination file has not.
trailer.Remove(PdfName.W);
trailer.Remove(PdfName.Index);
trailer.Remove(PdfName.Type);
trailer.Remove(PdfName.Length);
trailer.Put(PdfName.Size, new PdfNumber(this.Size()));
trailer.Put(PdfName.ID, fileId);
if (crypto != null)
{
trailer.Put(PdfName.Encrypt, crypto);
}
writer.WriteString("trailer\n");
if (document.properties.appendMode)
{
PdfNumber lastXref = new PdfNumber(document.reader.GetLastXref());
trailer.Put(PdfName.Prev, lastXref);
}
writer.Write(document.GetTrailer());
writer.Write('\n');
}
WriteKeyInfo(document);
writer.WriteString("startxref\n").WriteLong(startxref).WriteString("\n%%EOF\n");
xref = null;
freeReferencesLinkedList.Clear();
}
/// <summary>Build a PdfDictionary containing the name tree</summary>
/// <returns>PdfDictionary containing the name tree</returns>
public virtual PdfDictionary BuildTree()
{
String[] names = new String[items.Count];
names = items.Keys.ToArray(names);
JavaUtil.Sort(names);
if (names.Length <= NODE_SIZE)
{
PdfDictionary dic = new PdfDictionary();
PdfArray ar = new PdfArray();
foreach (String name in names)
{
ar.Add(new PdfString(name, null));
ar.Add(items.Get(name));
}
dic.Put(PdfName.Names, ar);
return(dic);
}
int skip = NODE_SIZE;
PdfDictionary[] kids = new PdfDictionary[(names.Length + NODE_SIZE - 1) / NODE_SIZE];
for (int k = 0; k < kids.Length; ++k)
{
int offset = k * NODE_SIZE;
int end = Math.Min(offset + NODE_SIZE, names.Length);
PdfDictionary dic = new PdfDictionary();
PdfArray arr = new PdfArray();
arr.Add(new PdfString(names[offset], null));
arr.Add(new PdfString(names[end - 1], null));
dic.Put(PdfName.Limits, arr);
arr = new PdfArray();
for (; offset < end; ++offset)
{
arr.Add(new PdfString(names[offset], null));
arr.Add(items.Get(names[offset]));
}
dic.Put(PdfName.Names, arr);
dic.MakeIndirect(catalog.GetDocument());
kids[k] = dic;
}
int top = kids.Length;
while (true)
{
if (top <= NODE_SIZE)
{
PdfArray arr = new PdfArray();
for (int i = 0; i < top; ++i)
{
arr.Add(kids[i]);
}
PdfDictionary dic = new PdfDictionary();
dic.Put(PdfName.Kids, arr);
return(dic);
}
skip *= NODE_SIZE;
int tt = (names.Length + skip - 1) / skip;
for (int i = 0; i < tt; ++i)
{
int offset = i * NODE_SIZE;
int end = Math.Min(offset + NODE_SIZE, top);
PdfDictionary dic = (PdfDictionary) new PdfDictionary().MakeIndirect(catalog.GetDocument());
PdfArray arr = new PdfArray();
arr.Add(new PdfString(names[i * skip], null));
arr.Add(new PdfString(names[Math.Min((i + 1) * skip, names.Length) - 1], null));
dic.Put(PdfName.Limits, arr);
arr = new PdfArray();
for (; offset < end; ++offset)
{
arr.Add(kids[offset]);
}
dic.Put(PdfName.Kids, arr);
kids[i] = dic;
}
top = tt;
}
}
public virtual PdfDictionary BuildTree()
{
int?[] numbers = new int?[items.Count];
numbers = items.Keys.ToArray(numbers);
iText.IO.Util.JavaUtil.Sort(numbers);
if (numbers.Length <= NODE_SIZE)
{
PdfDictionary dic = new PdfDictionary();
PdfArray ar = new PdfArray();
for (int k = 0; k < numbers.Length; ++k)
{
ar.Add(new PdfNumber((int)numbers[k]));
ar.Add(items.Get(numbers[k]));
}
dic.Put(PdfName.Nums, ar);
return(dic);
}
int skip = NODE_SIZE;
PdfDictionary[] kids = new PdfDictionary[(numbers.Length + NODE_SIZE - 1) / NODE_SIZE];
for (int i = 0; i < kids.Length; ++i)
{
int offset = i * NODE_SIZE;
int end = Math.Min(offset + NODE_SIZE, numbers.Length);
PdfDictionary dic = new PdfDictionary();
PdfArray arr = new PdfArray();
arr.Add(new PdfNumber((int)numbers[offset]));
arr.Add(new PdfNumber((int)numbers[end - 1]));
dic.Put(PdfName.Limits, arr);
arr = new PdfArray();
for (; offset < end; ++offset)
{
arr.Add(new PdfNumber((int)numbers[offset]));
arr.Add(items.Get(numbers[offset]));
}
dic.Put(PdfName.Nums, arr);
dic.MakeIndirect(catalog.GetDocument());
kids[i] = dic;
}
int top = kids.Length;
while (true)
{
if (top <= NODE_SIZE)
{
PdfArray arr = new PdfArray();
for (int k = 0; k < top; ++k)
{
arr.Add(kids[k]);
}
PdfDictionary dic = new PdfDictionary();
dic.Put(PdfName.Kids, arr);
return(dic);
}
skip *= NODE_SIZE;
int tt = (numbers.Length + skip - 1) / skip;
for (int k_1 = 0; k_1 < tt; ++k_1)
{
int offset = k_1 * NODE_SIZE;
int end = Math.Min(offset + NODE_SIZE, top);
PdfDictionary dic = ((PdfDictionary) new PdfDictionary().MakeIndirect(catalog.GetDocument()));
PdfArray arr = new PdfArray();
arr.Add(new PdfNumber((int)numbers[k_1 * skip]));
arr.Add(new PdfNumber((int)numbers[Math.Min((k_1 + 1) * skip, numbers.Length) - 1]));
dic.Put(PdfName.Limits, arr);
arr = new PdfArray();
for (; offset < end; ++offset)
{
arr.Add(kids[offset]);
}
dic.Put(PdfName.Kids, arr);
kids[k_1] = dic;
}
top = tt;
}
}