/// <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)); }