/// <summary>Writes cross reference table and trailer to PDF.</summary>
/// <param name="document">
/// is the current
/// <see cref="PdfDocument">document</see>
/// </param>
/// <param name="fileId">field id</param>
/// <param name="crypto">pdf encryption</param>
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;
}
document.CheckIsoConformance(this, IsoKey.XREF_TABLE);
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>Create instance of document outline.</summary>
/// <param name="title">the text that shall be displayed on the screen for this item.</param>
/// <param name="content">Outline dictionary</param>
/// <param name="pdfDocument">
///
/// <see cref="PdfDocument"/>
/// the outline belongs to.
/// </param>
internal PdfOutline(String title, PdfDictionary content, PdfDocument pdfDocument)
{
this.title = title;
this.content = content;
this.pdfDoc = pdfDocument;
}
public abstract byte[] Decode(byte[] arg1, PdfName arg2, PdfObject arg3, PdfDictionary arg4);
public virtual PdfDictionary BuildTree()
{
int?[] numbers = new int?[items.Count];
numbers = items.Keys.ToArray(numbers);
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 = 0; k < tt; ++k)
{
int offset = k * 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 * skip]));
arr.Add(new PdfNumber((int)numbers[Math.Min((k + 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] = dic;
}
top = tt;
}
}
public virtual void TestPdfNamesFetching()
{
byte[][] namesBytes = new byte[][] { new byte[] { 35, 67, 51, 35, 57, 67, 98, 101, 114, 115, 99, 104, 114,
105, 102, 116, 95, 49 }, new byte[] { 35, 67, 51, 35, 57, 67, 98, 101, 114, 115, 99, 104, 114, 105, 102
, 116, 95, 50 }, new byte[] { 65, 114, 116, 105, 99, 108, 101 }, new byte[] { 66, 105, 108, 100, 117,
110, 116, 101, 114, 115, 99, 104, 114, 105, 102, 116 }, new byte[] { 78, 111, 114, 109, 97, 108, 80, 97
, 114, 97, 103, 114, 97, 112, 104, 83, 116, 121, 108, 101 }, new byte[] { 83, 116, 111, 114, 121 }, new
byte[] { 84, 79, 67, 45, 49 }, new byte[] { 84, 79, 67, 45, 50, 45, 50 }, new byte[] { 84, 79, 67, 45,
72, 101, 97, 100 }, new byte[] { 84, 97, 98, 101, 108, 108, 101 }, new byte[] { 84, 97, 98, 101, 108,
108, 101, 95, 72, 101, 97, 100 }, new byte[] { 84, 97, 98, 101, 108, 108, 101, 95, 102, 101, 116, 116 }
, new byte[] { 84, 101, 120, 116, 95, 73, 78, 70, 79 }, new byte[] { 84, 101, 120, 116, 95, 73, 110, 102
, 111, 95, 72, 101, 97, 100 }, new byte[] { 84, 101, 120, 116, 107, 35, 67, 51, 35, 66, 54, 114, 112,
101, 114 }, new byte[] { 84, 101, 120, 116, 107, 35, 67, 51, 35, 66, 54, 114, 112, 101, 114, 45, 69, 114
, 115, 116, 122, 101, 105, 108, 101 }, new byte[] { 84, 101, 120, 116, 107, 35, 67, 51, 35, 66, 54, 114
, 112, 101, 114, 95, 66, 97, 99, 107 }, new byte[] { 95, 78, 111, 95, 112, 97, 114, 97, 103, 114, 97,
112, 104, 95, 115, 116, 121, 108, 101, 95 } };
// /#C3#9Cberschrift_1
// /#C3#9Cberschrift_2
// /Article
// /Bildunterschrift
// /NormalParagraphStyle
// /Story
// /TOC-1
// /TOC-2-2
// /TOC-Head
// /Tabelle
// /Tabelle_Head
// /Tabelle_fett
// /Text_INFO
// /Text_Info_Head
// /Textk#C3#B6rper
// /Textk#C3#B6rper-Erstzeile
// /Textk#C3#B6rper_Back
// /_No_paragraph_style_
bool[] haveValue = new bool[] { true, true, false, true, true, true, false, false, false, false, false, false
, false, false, false, false, false, false };
IList <PdfName> names = new List <PdfName>();
for (int i = 0; i < namesBytes.Length; i++)
{
byte[] b = namesBytes[i];
PdfName n = new PdfName(b);
names.Add(n);
if (haveValue[i])
{
n.GenerateValue();
}
}
PdfDictionary dict = new PdfDictionary();
foreach (PdfName name in names)
{
dict.Put(name, new PdfName("dummy"));
}
PdfName expectedToContain = new PdfName("Article");
bool found = false;
foreach (PdfName pdfName in dict.KeySet())
{
found = pdfName.Equals(expectedToContain);
if (found)
{
break;
}
}
NUnit.Framework.Assert.IsTrue(found);
NUnit.Framework.Assert.IsTrue(dict.ContainsKey(expectedToContain));
}
