/// <summary>
///
/// </summary>
PdfTrailer ReadXRefTableAndTrailer(PdfReferenceTable xrefTable)
{
Debug.Assert(xrefTable != null);
Symbol symbol = ScanNextToken();
// Is it an xref stream?
if (symbol == Symbol.Integer)
{
throw new PdfReaderException(PSSR.CannotHandleXRefStreams);
}
// TODO: It is very high on the todo list, but still undone
Debug.Assert(symbol == Symbol.XRef);
while (true)
{
symbol = ScanNextToken();
if (symbol == Symbol.Integer)
{
int start = this.lexer.TokenToInteger;
int length = ReadInteger();
for (int id = start; id < start + length; id++)
{
int position = ReadInteger();
int generation = ReadInteger();
ReadSymbol(Symbol.Keyword);
string token = lexer.Token;
// Skip start entry
if (id == 0)
{
continue;
}
// Skip unused entries.
if (token != "n")
{
continue;
}
// Even it is restricted, an object can exists in more than one subsection.
// (PDF Reference Implementation Notes 15).
PdfObjectID objectID = new PdfObjectID(id, generation);
// Ignore the latter one
if (xrefTable.Contains(objectID))
{
continue;
}
xrefTable.Add(new PdfReference(objectID, position));
}
}
else if (symbol == Symbol.Trailer)
{
ReadSymbol(Symbol.BeginDictionary);
PdfTrailer trailer = new PdfTrailer(this.document);
this.ReadDictionary(trailer, false);
return(trailer);
}
else
{
throw new PdfReaderException(PSSR.UnexpectedToken(this.lexer.Token));
}
}
}
public string Build()
{
PdfMetadata = ValueOrDefault(PdfMetadata, PdfMetadataDefaultValue);
AddMetadata(PdfMetadata);
StringBuilder sb = new StringBuilder();
sb.Append($"%PDF-{Version}\n");
sb.Append(BinaryComment());
foreach (PdfObject pdfObject in PdfObjects)
{
sb.Append(pdfObject.Build());
}
var pdfFileUpUntilXref = sb.ToString(); // Temp pdf so that we can calculate position to Reference table
var xref = new PdfReferenceTable(pdfFileUpUntilXref, PdfObjects);
var xrefPosition = PdfHelpers.Encoding.GetByteCount(pdfFileUpUntilXref);
sb.Append($"{xref.ToString()}");
var trailer = new PdfTrailer(this.Catalog, PdfObjects.Count + 1, PdfMetadata);
sb.Append(trailer.Build());
// Tells pdf where to find xref table
sb.Append("startxref\n");
sb.Append($"{xrefPosition}\n");
sb.Append("%%EOF");
return(sb.ToString());
}
public void Setup()
{
_reader = new Mock <IPdfReader>();
_editor = new Mock <IPdfEditor>();
_data = new byte[] { 0, 1, 2, 3, 4, 5 };
_rootRef = new Mock <PdfIndirectReference>();
_infoRef = new Mock <PdfIndirectReference>();
_root = new Mock <PdfDictionary>();
_info = new Mock <PdfDictionary>();
_trailer = new PdfTrailer
{
TrailerDictionary = new Dictionary <PdfName, PdfObject> {
{ "Root", _rootRef.Object },
{ "Info", _infoRef.Object }
}
};
_reader.Setup(x => x.ReadVersion()).Returns(1.4M);
_reader.Setup(x => x.ReadTrailer()).Returns(_trailer);
_reader.Setup(x => x.ReadObject(_rootRef.Object)).Returns(_root.Object);
_reader.Setup(x => x.ReadObject(_infoRef.Object)).Returns(_info.Object);
_inMemoryPdf = new InMemoryPdf(_data, _reader.Object, _editor.Object);
}
void Initialize()
{
//this.info = new PdfInfo(this);
fontTable = new PdfFontTable(this);
imageTable = new PdfImageTable(this);
trailer = new PdfTrailer(this);
irefTable = new PdfReferenceTable(this);
trailer.CreateNewDocumentIDs();
}
void Initialize()
{
//_info = new PdfInfo(this);
_fontTable = new PdfFontTable(this);
_imageTable = new PdfImageTable(this);
_trailer = new PdfTrailer(this);
_irefTable = new PdfCrossReferenceTable(this);
_trailer.CreateNewDocumentIDs();
}
/** Does the actual document manipulation to encrypt it.
* @throws DocumentException on error
* @throws IOException on error
*/
protected void go()
{
body = new PdfBody(HEADER.Length, this, true);
os.Write(HEADER, 0, HEADER.Length);
PdfObject[] xb = reader.xrefObj;
myXref = new int[xb.Length];
int idx = 1;
for (int k = 1; k < xb.Length; ++k)
{
if (xb[k] != null)
{
myXref[k] = idx++;
}
}
file.reOpen();
for (int k = 1; k < xb.Length; ++k)
{
if (xb[k] != null)
{
addToBody(xb[k]);
}
}
file.close();
PdfIndirectReference encryption = null;
PdfLiteral fileID = null;
if (crypto != null)
{
PdfIndirectObject encryptionObject = body.Add(crypto.EncryptionDictionary);
encryptionObject.writeTo(os);
encryption = encryptionObject.IndirectReference;
fileID = crypto.FileID;
}
// write the cross-reference table of the body
os.Write(body.CrossReferenceTable, 0, body.CrossReferenceTable.Length);
PRIndirectReference iRoot = (PRIndirectReference)reader.trailer.get(PdfName.ROOT);
PdfIndirectReference root = new PdfIndirectReference(0, myXref[iRoot.Number]);
PRIndirectReference iInfo = (PRIndirectReference)reader.trailer.get(PdfName.INFO);
PdfIndirectReference info = null;
if (iInfo != null)
{
info = new PdfIndirectReference(0, myXref[iInfo.Number]);
}
PdfTrailer trailer = new PdfTrailer(body.Size,
body.Offset,
root,
info,
encryption,
fileID);
byte[] tmp = trailer.toPdf(this);
os.Write(tmp, 0, tmp.Length);
os.Close();
}
public void Info()
{
var indirectReference = new Mock <PdfIndirectReference>();
var trailerDictionary = (PdfDictionary) new Dictionary <PdfName, PdfObject> {
{ "Info", indirectReference.Object }
};
var trailer = new PdfTrailer
{
TrailerDictionary = trailerDictionary
};
var result = trailer.Info;
Assert.AreEqual(indirectReference.Object, result);
}
public void ConvertToString()
{
var trailerDictionary = new Mock <PdfDictionary>();
var trailer = new PdfTrailer
{
CrossReferenceTableOffset = 100,
TrailerDictionary = trailerDictionary.Object
};
trailerDictionary.Setup(x => x.ToString()).Returns("trailerdictionary");
var result = trailer.ToString();
Assert.AreEqual("trailer\ntrailerdictionary\nstartxref\n100", result);
}
/// <summary>
/// Writes PDF document trailer into file stream
/// </summary>
/// <param name="trailer">PDF document trailer</param>
internal void Write(PdfTrailer trailer)
{
writeLineRaw("xref");
writeLineRaw("0 {0}", trailer.LastObjectId + 1);
writeLineRaw("0000000000 65535 f");
foreach (var offset in trailer.ObjectOffsets)
{
writeLineRaw("{0} 00000 n", offset);
}
writeLineRaw("trailer");
writeBeginDictionary();
writeDictionaryEntry("/Size", trailer.LastObjectId + 1);
writeDictionaryEntry("/Root", trailer.Root.GetReference());
writeDictionaryEntry("/Info", trailer.Root.Info.GetReference());
writeEndDictionary();
writeLineRaw("startxref");
writeLineRaw("{0}", trailer.XRefOffset);
writeRaw(Encoding.ASCII.GetBytes("%%EOF"));
}
public void Setup()
{
_document = new Mock <IEditablePdfDocument>();
_trailer = new PdfTrailer {
CrossReferenceTableOffset = 10,
TrailerDictionary = new PdfDictionary()
};
_crossReferenceTable = new PdfCrossReferenceTable
{
ObjectOffsets = new Dictionary <int, int>(),
Offset = 10
};
_document.SetupGet(x => x.CrossReferenceTable).Returns(_crossReferenceTable);
_document.SetupGet(x => x.Encoding).Returns(Encoding.UTF8);
_document.SetupGet(x => x.Trailer).Returns(_trailer);
_pdfEditor = new PdfEditor(_document.Object);
}
/// <summary>
/// Write the document to a stream.
/// </summary>
/// <param name="stream">The stream to write to.</param>
/// <returns>The number of bytes written.</returns>
public int WriteTo(Stream stream)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
int written = PdfHeader.Value.WriteTo(stream);
foreach (IPdfIndirectObject indirectObject in _bodyObjects)
{
_xrefTable.SetSlot(indirectObject, written);
written += indirectObject.WriteTo(stream);
}
PdfTrailer trailer = new PdfTrailer(_root, _xrefTable);
trailer.SetCrossReferenceTableLocation(written);
written += _xrefTable.WriteTo(stream);
written += trailer.WriteTo(stream);
return(written);
}
/**
* Signals that the <CODE>Document</CODE> was closed and that no other
* <CODE>Elements</CODE> will be added.
* <P>
* The pages-tree is built and written to the outputstream.
* A Catalog is constructed, as well as an Info-object,
* the referencetable is composed and everything is written
* to the outputstream embedded in a Trailer.
*/
public override void Close() {
if (open) {
if ((currentPageNumber - 1) != pageReferences.Count)
throw new Exception("The page " + pageReferences.Count +
" was requested but the document has only " + (currentPageNumber - 1) + " pages.");
pdf.Close();
AddSharedObjectsToBody();
foreach (IPdfOCG layer in documentOCG.Keys) {
AddToBody(layer.PdfObject, layer.Ref);
}
// add the root to the body
PdfIndirectReference rootRef = root.WritePageTree();
// make the catalog-object and add it to the body
PdfDictionary catalog = GetCatalog(rootRef);
// [C9] if there is XMP data to add: add it
if (xmpMetadata != null) {
PdfStream xmp = new PdfStream(xmpMetadata);
xmp.Put(PdfName.TYPE, PdfName.METADATA);
xmp.Put(PdfName.SUBTYPE, PdfName.XML);
if (crypto != null && !crypto.IsMetadataEncrypted()) {
PdfArray ar = new PdfArray();
ar.Add(PdfName.CRYPT);
xmp.Put(PdfName.FILTER, ar);
}
catalog.Put(PdfName.METADATA, body.Add(xmp).IndirectReference);
}
// [C10] make pdfx conformant
if (IsPdfX()) {
CompleteInfoDictionary(Info);
CompleteExtraCatalog(ExtraCatalog);
}
// [C11] Output Intents
if (extraCatalog != null) {
catalog.MergeDifferent(extraCatalog);
}
WriteOutlines(catalog, false);
// add the Catalog to the body
PdfIndirectObject indirectCatalog = AddToBody(catalog, false);
// add the info-object to the body
PdfIndirectObject infoObj = AddToBody(Info, false);
// [F1] encryption
PdfIndirectReference encryption = null;
PdfObject fileID = null;
body.FlushObjStm();
if (crypto != null) {
PdfIndirectObject encryptionObject = AddToBody(crypto.GetEncryptionDictionary(), false);
encryption = encryptionObject.IndirectReference;
fileID = crypto.FileID;
}
else
fileID = PdfEncryption.CreateInfoId(PdfEncryption.CreateDocumentId());
// write the cross-reference table of the body
body.WriteCrossReferenceTable(os, indirectCatalog.IndirectReference,
infoObj.IndirectReference, encryption, fileID, prevxref);
// make the trailer
// [F2] full compression
if (fullCompression) {
WriteKeyInfo(os);
byte[] tmp = GetISOBytes("startxref\n");
os.Write(tmp, 0, tmp.Length);
tmp = GetISOBytes(body.Offset.ToString());
os.Write(tmp, 0, tmp.Length);
tmp = GetISOBytes("\n%%EOF\n");
os.Write(tmp, 0, tmp.Length);
}
else {
PdfTrailer trailer = new PdfTrailer(body.Size,
body.Offset,
indirectCatalog.IndirectReference,
infoObj.IndirectReference,
encryption,
fileID, prevxref);
trailer.ToPdf(this, os);
}
base.Close();
}
}
protected virtual void Close(PdfIndirectReference info, int skipInfo) {
AlterContents();
int rootN = ((PRIndirectReference)reader.trailer.Get(PdfName.ROOT)).Number;
if (append) {
int[] keys = marked.GetKeys();
for (int k = 0; k < keys.Length; ++k) {
int j = keys[k];
PdfObject obj = reader.GetPdfObjectRelease(j);
if (obj != null && skipInfo != j && j < initialXrefSize) {
AddToBody(obj, obj.IndRef, j != rootN);
}
}
for (int k = initialXrefSize; k < reader.XrefSize; ++k) {
PdfObject obj = reader.GetPdfObject(k);
if (obj != null) {
AddToBody(obj, GetNewObjectNumber(reader, k, 0));
}
}
} else {
for (int k = 1; k < reader.XrefSize; ++k) {
PdfObject obj = reader.GetPdfObjectRelease(k);
if (obj != null && skipInfo != k) {
AddToBody(obj, GetNewObjectNumber(reader, k, 0), k != rootN);
}
}
}
PdfIndirectReference encryption = null;
PdfObject fileID = null;
if (crypto != null) {
if (append) {
encryption = reader.GetCryptoRef();
} else {
PdfIndirectObject encryptionObject = AddToBody(crypto.GetEncryptionDictionary(), false);
encryption = encryptionObject.IndirectReference;
}
fileID = crypto.GetFileID(true);
}
else {
PdfArray IDs = reader.trailer.GetAsArray(PdfName.ID);
if(IDs != null && IDs.GetAsString(0) != null) {
fileID = PdfEncryption.CreateInfoId(IDs.GetAsString(0).GetBytes(), true);
}
else {
fileID = PdfEncryption.CreateInfoId(PdfEncryption.CreateDocumentId(), true);
}
}
PRIndirectReference iRoot = (PRIndirectReference)reader.trailer.Get(PdfName.ROOT);
PdfIndirectReference root = new PdfIndirectReference(0, GetNewObjectNumber(reader, iRoot.Number, 0));
// write the cross-reference table of the body
body.WriteCrossReferenceTable(os, root, info, encryption, fileID, prevxref);
if (fullCompression) {
WriteKeyInfo(os);
byte[] tmp = GetISOBytes("startxref\n");
os.Write(tmp, 0, tmp.Length);
tmp = GetISOBytes(body.Offset.ToString());
os.Write(tmp, 0, tmp.Length);
tmp = GetISOBytes("\n%%EOF\n");
os.Write(tmp, 0, tmp.Length);
} else {
PdfTrailer trailer = new PdfTrailer(body.Size,
body.Offset,
root,
info,
encryption,
fileID, prevxref);
trailer.ToPdf(this, os);
}
os.Flush();
if (CloseStream)
os.Close();
GetCounter().Written(os.Counter);
}
void Initialize()
{
_trailer = new PdfTrailer(this);
_irefTable = new PdfCrossReferenceTable(this);
_trailer.CreateNewDocumentIDs();
}
internal void Close(Hashtable moreInfo)
{
if (closed)
return;
if (useVp) {
reader.SetViewerPreferences(viewerPreferences);
MarkUsed(reader.Trailer.Get(PdfName.ROOT));
}
if (flat)
FlatFields();
if (flatFreeText)
FlatFreeTextFields();
AddFieldResources();
PdfDictionary acroForm = (PdfDictionary)PdfReader.GetPdfObject(reader.Catalog.Get(PdfName.ACROFORM), reader.Catalog);
if (acroFields != null && acroFields.Xfa.Changed) {
MarkUsed(acroForm);
if (!flat)
acroFields.Xfa.SetXfa(this);
}
if (sigFlags != 0) {
if (acroForm != null) {
acroForm.Put(PdfName.SIGFLAGS, new PdfNumber(sigFlags));
MarkUsed(acroForm);
}
}
closed = true;
AddSharedObjectsToBody();
SetOutlines();
SetJavaScript();
AddFileAttachments();
PdfDictionary catalog = reader.Catalog;
if (openAction != null) {
catalog.Put(PdfName.OPENACTION, openAction);
}
byte[] altMetadata = xmpMetadata;
if (altMetadata == null) {
PdfObject xmpo = PdfReader.GetPdfObject(catalog.Get(PdfName.METADATA));
if (xmpo != null && xmpo.IsStream()) {
altMetadata = PdfReader.GetStreamBytesRaw((PRStream)xmpo);
PdfReader.KillIndirect(xmpo);
}
}
// if there is XMP data to add: add it
if (altMetadata != null) {
PdfStream xmp = new PdfStream(altMetadata);
xmp.Put(PdfName.TYPE, PdfName.METADATA);
xmp.Put(PdfName.SUBTYPE, PdfName.XML);
if (crypto != null && !crypto.IsMetadataEncrypted()) {
PdfArray ar = new PdfArray();
ar.Add(PdfName.CRYPT);
xmp.Put(PdfName.FILTER, ar);
}
catalog.Put(PdfName.METADATA, body.Add(xmp).IndirectReference);
MarkUsed(catalog);
}
PRIndirectReference iInfo = null;
try {
file.ReOpen();
AlterContents();
iInfo = (PRIndirectReference)reader.trailer.Get(PdfName.INFO);
int skip = -1;
if (iInfo != null)
skip = iInfo.Number;
int rootN = ((PRIndirectReference)reader.trailer.Get(PdfName.ROOT)).Number;
if (append) {
int[] keys = marked.GetKeys();
for (int k = 0; k < keys.Length; ++k) {
int j = keys[k];
PdfObject obj = reader.GetPdfObjectRelease(j);
if (obj != null && skip != j && j < initialXrefSize) {
AddToBody(obj, j, j != rootN);
}
}
for (int k = initialXrefSize; k < reader.XrefSize; ++k) {
PdfObject obj = reader.GetPdfObject(k);
if (obj != null) {
AddToBody(obj, GetNewObjectNumber(reader, k, 0));
}
}
}
else {
for (int k = 1; k < reader.XrefSize; ++k) {
PdfObject obj = reader.GetPdfObjectRelease(k);
if (obj != null && skip != k) {
AddToBody(obj, GetNewObjectNumber(reader, k, 0), k != rootN);
}
}
}
}
finally {
try {
file.Close();
}
catch {
// empty on purpose
}
}
PdfIndirectReference encryption = null;
PdfObject fileID = null;
if (crypto != null) {
if (append) {
encryption = reader.GetCryptoRef();
}
else {
PdfIndirectObject encryptionObject = AddToBody(crypto.GetEncryptionDictionary(), false);
encryption = encryptionObject.IndirectReference;
}
fileID = crypto.FileID;
}
PRIndirectReference iRoot = (PRIndirectReference)reader.trailer.Get(PdfName.ROOT);
PdfIndirectReference root = new PdfIndirectReference(0, GetNewObjectNumber(reader, iRoot.Number, 0));
PdfIndirectReference info = null;
PdfDictionary oldInfo = (PdfDictionary)PdfReader.GetPdfObject(iInfo);
PdfDictionary newInfo = new PdfDictionary();
if (oldInfo != null) {
foreach (PdfName key in oldInfo.Keys) {
PdfObject value = PdfReader.GetPdfObject(oldInfo.Get(key));
newInfo.Put(key, value);
}
}
if (moreInfo != null) {
foreach (DictionaryEntry entry in moreInfo) {
PdfName keyName = new PdfName((String)entry.Key);
String value = (String)entry.Value;
if (value == null)
newInfo.Remove(keyName);
else
newInfo.Put(keyName, new PdfString(value, PdfObject.TEXT_UNICODE));
}
}
if (append) {
if (iInfo == null)
info = AddToBody(newInfo, false).IndirectReference;
else
info = AddToBody(newInfo, iInfo.Number, false).IndirectReference;
}
else {
if (newInfo.Size != 0)
info = AddToBody(newInfo, false).IndirectReference;
}
// write the cross-reference table of the body
body.WriteCrossReferenceTable(os, root, info, encryption, fileID, prevxref);
if (fullCompression) {
byte[] tmp = GetISOBytes("startxref\n");
os.Write(tmp, 0, tmp.Length);
tmp = GetISOBytes(body.Offset.ToString());
os.Write(tmp, 0, tmp.Length);
tmp = GetISOBytes("\n%%EOF\n");
os.Write(tmp, 0, tmp.Length);
}
else {
PdfTrailer trailer = new PdfTrailer(body.Size,
body.Offset,
root,
info,
encryption,
fileID, prevxref);
trailer.ToPdf(this, os);
}
os.Flush();
if (CloseStream)
os.Close();
reader.Close();
}
/// <summary>
/// Implements saving a PDF file.
/// </summary>
void DoSave(PdfWriter writer)
{
if (_pages == null || _pages.Count == 0)
{
if (_outStream != null)
{
// Give feedback if the wrong constructor was used.
throw new InvalidOperationException("Cannot save a PDF document with no pages. Do not use \"public PdfDocument(string filename)\" or \"public PdfDocument(Stream outputStream)\" if you want to open an existing PDF document from a file or stream; use PdfReader.Open() for that purpose.");
}
throw new InvalidOperationException("Cannot save a PDF document with no pages.");
}
try
{
// HACK: Remove XRefTrailer
if (_trailer is PdfCrossReferenceStream)
{
// HACK^2: Preserve the SecurityHandler.
PdfStandardSecurityHandler securityHandler = _securitySettings.SecurityHandler;
_trailer = new PdfTrailer((PdfCrossReferenceStream)_trailer);
_trailer._securityHandler = securityHandler;
}
bool encrypt = _securitySettings.DocumentSecurityLevel != PdfDocumentSecurityLevel.None;
if (encrypt)
{
PdfStandardSecurityHandler securityHandler = _securitySettings.SecurityHandler;
if (securityHandler.Reference == null)
{
_irefTable.Add(securityHandler);
}
else
{
Debug.Assert(_irefTable.Contains(securityHandler.ObjectID));
}
_trailer.Elements[PdfTrailer.Keys.Encrypt] = _securitySettings.SecurityHandler.Reference;
}
else
{
_trailer.Elements.Remove(PdfTrailer.Keys.Encrypt);
}
PrepareForSave();
if (encrypt)
{
_securitySettings.SecurityHandler.PrepareEncryption();
}
writer.WriteFileHeader(this);
PdfReference[] irefs = _irefTable.AllReferences;
int count = irefs.Length;
for (int idx = 0; idx < count; idx++)
{
PdfReference iref = irefs[idx];
#if DEBUG_
if (iref.ObjectNumber == 378)
{
GetType();
}
#endif
iref.Position = writer.Position;
iref.Value.WriteObject(writer);
}
var startxref = writer.Position;
_irefTable.WriteObject(writer);
writer.WriteRaw("trailer\n");
_trailer.Elements.SetInteger("/Size", count + 1);
_trailer.WriteObject(writer);
writer.WriteEof(this, startxref);
//if (encrypt)
//{
// state &= ~DocumentState.SavingEncrypted;
// //_securitySettings.SecurityHandler.EncryptDocument();
//}
}
finally
{
if (writer != null)
{
writer.Stream.Flush();
// DO NOT CLOSE WRITER HERE
//writer.Close();
}
}
}
internal void WriteTrailer(UnderlyingPdf document, SerializationResult sRes)
{
var trailer = new PdfTrailer(sRes.References[document.Root], sRes.Offsets.Count);
this.iSer.SerializeTrailer(this, trailer);
}
internal void Close(IDictionary<String, String> moreInfo)
{
if (closed)
return;
if (useVp) {
reader.SetViewerPreferences(viewerPreferences);
MarkUsed(reader.Trailer.Get(PdfName.ROOT));
}
if (flat)
FlatFields();
if (flatFreeText)
FlatFreeTextFields();
AddFieldResources();
PdfDictionary catalog = reader.Catalog;
PdfDictionary pages = (PdfDictionary)PdfReader.GetPdfObject(catalog.Get(PdfName.PAGES));
pages.Put(PdfName.ITXT, new PdfString(Document.Release));
MarkUsed(pages);
PdfDictionary acroForm = (PdfDictionary)PdfReader.GetPdfObject(catalog.Get(PdfName.ACROFORM), reader.Catalog);
if (acroFields != null && acroFields.Xfa.Changed) {
MarkUsed(acroForm);
if (!flat)
acroFields.Xfa.SetXfa(this);
}
if (sigFlags != 0) {
if (acroForm != null) {
acroForm.Put(PdfName.SIGFLAGS, new PdfNumber(sigFlags));
MarkUsed(acroForm);
MarkUsed(catalog);
}
}
closed = true;
AddSharedObjectsToBody();
SetOutlines();
SetJavaScript();
AddFileAttachments();
if (openAction != null) {
catalog.Put(PdfName.OPENACTION, openAction);
}
if (pdf.pageLabels != null)
catalog.Put(PdfName.PAGELABELS, pdf.pageLabels.GetDictionary(this));
// OCG
if (documentOCG.Count > 0) {
FillOCProperties(false);
PdfDictionary ocdict = catalog.GetAsDict(PdfName.OCPROPERTIES);
if (ocdict == null) {
reader.Catalog.Put(PdfName.OCPROPERTIES, OCProperties);
}
else {
ocdict.Put(PdfName.OCGS, OCProperties.Get(PdfName.OCGS));
PdfDictionary ddict = ocdict.GetAsDict(PdfName.D);
if (ddict == null) {
ddict = new PdfDictionary();
ocdict.Put(PdfName.D, ddict);
}
ddict.Put(PdfName.ORDER, OCProperties.GetAsDict(PdfName.D).Get(PdfName.ORDER));
ddict.Put(PdfName.RBGROUPS, OCProperties.GetAsDict(PdfName.D).Get(PdfName.RBGROUPS));
ddict.Put(PdfName.OFF, OCProperties.GetAsDict(PdfName.D).Get(PdfName.OFF));
ddict.Put(PdfName.AS, OCProperties.GetAsDict(PdfName.D).Get(PdfName.AS));
}
}
// metadata
int skipInfo = -1;
PdfObject oInfo = reader.Trailer.Get(PdfName.INFO);
PRIndirectReference iInfo = null;
PdfDictionary oldInfo = null;
if (oInfo is PRIndirectReference)
iInfo = (PRIndirectReference)oInfo;
if (iInfo != null)
oldInfo = (PdfDictionary)PdfReader.GetPdfObject(iInfo);
else if (oInfo is PdfDictionary)
oldInfo = (PdfDictionary)oInfo;
String producer = null;
if (iInfo != null)
skipInfo = iInfo.Number;
if (oldInfo != null && oldInfo.Get(PdfName.PRODUCER) != null)
producer = oldInfo.GetAsString(PdfName.PRODUCER).ToUnicodeString();
if (producer == null) {
producer = Document.Version;
}
else if (producer.IndexOf(Document.Product) == -1) {
StringBuilder buf = new StringBuilder(producer);
buf.Append("; modified using ");
buf.Append(Document.Version);
producer = buf.ToString();
}
PdfIndirectReference info = null;
PdfDictionary newInfo = new PdfDictionary();
if (oldInfo != null) {
foreach (PdfName key in oldInfo.Keys) {
PdfObject value = PdfReader.GetPdfObject(oldInfo.Get(key));
newInfo.Put(key, value);
}
}
if (moreInfo != null) {
foreach (KeyValuePair<string,string> entry in moreInfo) {
PdfName keyName = new PdfName(entry.Key);
String value = entry.Value;
if (value == null)
newInfo.Remove(keyName);
else
newInfo.Put(keyName, new PdfString(value, PdfObject.TEXT_UNICODE));
}
}
PdfDate date = new PdfDate();
newInfo.Put(PdfName.MODDATE, date);
newInfo.Put(PdfName.PRODUCER, new PdfString(producer, PdfObject.TEXT_UNICODE));
if (append) {
if (iInfo == null)
info = AddToBody(newInfo, false).IndirectReference;
else
info = AddToBody(newInfo, iInfo.Number, false).IndirectReference;
}
else {
info = AddToBody(newInfo, false).IndirectReference;
}
// XMP
byte[] altMetadata = null;
PdfObject xmpo = PdfReader.GetPdfObject(catalog.Get(PdfName.METADATA));
if (xmpo != null && xmpo.IsStream()) {
altMetadata = PdfReader.GetStreamBytesRaw((PRStream)xmpo);
PdfReader.KillIndirect(catalog.Get(PdfName.METADATA));
}
if (xmpMetadata != null) {
altMetadata = xmpMetadata;
}
if (altMetadata != null) {
PdfStream xmp;
try {
XmpReader xmpr;
if (moreInfo == null) {
xmpr = new XmpReader(altMetadata);
if (!(xmpr.ReplaceNode("http://ns.adobe.com/pdf/1.3/", "Producer", producer)
|| xmpr.ReplaceDescriptionAttribute("http://ns.adobe.com/pdf/1.3/", "Producer", producer)))
xmpr.Add("rdf:Description", "http://ns.adobe.com/pdf/1.3/", "Producer", producer);
if (!(xmpr.ReplaceNode("http://ns.adobe.com/xap/1.0/", "ModifyDate", date.GetW3CDate())
|| xmpr.ReplaceDescriptionAttribute("http://ns.adobe.com/xap/1.0/", "ModifyDate", date.GetW3CDate())))
xmpr.Add("rdf:Description", "http://ns.adobe.com/xap/1.0/", "ModifyDate", date.GetW3CDate());
if (!(xmpr.ReplaceNode("http://ns.adobe.com/xap/1.0/", "MetadataDate", date.GetW3CDate())
|| xmpr.ReplaceDescriptionAttribute("http://ns.adobe.com/xap/1.0/", "MetadataDate", date.GetW3CDate()))) {
}
}
else {
MemoryStream baos = new MemoryStream();
try {
XmpWriter xmpw = new XmpWriter(baos, newInfo, PDFXConformance);
xmpw.Close();
}
catch (IOException) {
}
xmpr = new XmpReader(baos.ToArray());
}
xmp = new PdfStream(xmpr.SerializeDoc());
}
catch {
xmp = new PdfStream(altMetadata);
}
xmp.Put(PdfName.TYPE, PdfName.METADATA);
xmp.Put(PdfName.SUBTYPE, PdfName.XML);
if (crypto != null && !crypto.IsMetadataEncrypted()) {
PdfArray ar = new PdfArray();
ar.Add(PdfName.CRYPT);
xmp.Put(PdfName.FILTER, ar);
}
if (append && xmpo != null) {
body.Add(xmp, xmpo.IndRef);
}
else {
catalog.Put(PdfName.METADATA, body.Add(xmp).IndirectReference);
MarkUsed(catalog);
}
}
try {
file.ReOpen();
AlterContents();
int rootN = ((PRIndirectReference)reader.trailer.Get(PdfName.ROOT)).Number;
if (append) {
int[] keys = marked.GetKeys();
for (int k = 0; k < keys.Length; ++k) {
int j = keys[k];
PdfObject obj = reader.GetPdfObjectRelease(j);
if (obj != null && skipInfo != j && j < initialXrefSize) {
AddToBody(obj, j, j != rootN);
}
}
for (int k = initialXrefSize; k < reader.XrefSize; ++k) {
PdfObject obj = reader.GetPdfObject(k);
if (obj != null) {
AddToBody(obj, GetNewObjectNumber(reader, k, 0));
}
}
}
else {
for (int k = 1; k < reader.XrefSize; ++k) {
PdfObject obj = reader.GetPdfObjectRelease(k);
if (obj != null && skipInfo != k) {
AddToBody(obj, GetNewObjectNumber(reader, k, 0), k != rootN);
}
}
}
}
finally {
try {
file.Close();
}
catch {
// empty on purpose
}
}
PdfIndirectReference encryption = null;
PdfObject fileID = null;
if (crypto != null) {
if (append) {
encryption = reader.GetCryptoRef();
}
else {
PdfIndirectObject encryptionObject = AddToBody(crypto.GetEncryptionDictionary(), false);
encryption = encryptionObject.IndirectReference;
}
fileID = crypto.FileID;
}
else
fileID = PdfEncryption.CreateInfoId(PdfEncryption.CreateDocumentId());
PRIndirectReference iRoot = (PRIndirectReference)reader.trailer.Get(PdfName.ROOT);
PdfIndirectReference root = new PdfIndirectReference(0, GetNewObjectNumber(reader, iRoot.Number, 0));
// write the cross-reference table of the body
body.WriteCrossReferenceTable(os, root, info, encryption, fileID, prevxref);
if (fullCompression) {
byte[] tmp = GetISOBytes("startxref\n");
os.Write(tmp, 0, tmp.Length);
tmp = GetISOBytes(body.Offset.ToString());
os.Write(tmp, 0, tmp.Length);
tmp = GetISOBytes("\n%%EOF\n");
os.Write(tmp, 0, tmp.Length);
}
else {
PdfTrailer trailer = new PdfTrailer(body.Size,
body.Offset,
root,
info,
encryption,
fileID, prevxref);
trailer.ToPdf(this, os);
}
os.Flush();
if (CloseStream)
os.Close();
reader.Close();
}
/// <summary>
/// Creates a new instance of the PdfDocument class from the IO stream.
/// </summary>
/// <param name="stream">The <see cref="Stream"/> on which to open the PdfDocument.</param>
/// <returns></returns>
public static PdfDocument Open(Stream stream)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
if (!stream.CanRead)
{
throw new ArgumentException("Cannot read stream", nameof(stream));
}
var document = new PdfDocument(stream);
using (var reader = new PdfReader(stream))
{
// Check header
document.pdfVersion = PdfVersion.FromReader(reader);
// Check trailer
reader.Position = reader.GetXRefPosition();
// Read Cross-Reference Table
IPdfTrailer trailer;
IXRefSection xrefSection;
char fisrtChar;
do
{
fisrtChar = reader.Peek();
if (fisrtChar == XRefSection.StartKeyword[0])
{
// Cross-Reference Section
xrefSection = XRefSection.FromReader(reader);
trailer = PdfTrailer.FromReader(reader);
}
else if (char.IsDigit(fisrtChar))
{
// Cross-Reference Stream
var xrefStream = XRefStream.FromReader(reader);
trailer = xrefStream;
xrefSection = xrefStream;
}
else
{
throw new FormatException("Invalid Cross-Reference section.");
}
if (document.xrefTable == null)
{
// Initialize document's Cross-Reference Table
document.xrefTable = new XRefTable(xrefSection, trailer.Size);
}
else
{
// Register section
document.xrefTable.AddSection(xrefSection);
}
// Keep instance of last trailer
if (document.trailer == null)
{
document.trailer = trailer;
}
// Seek to previous trailer
if (trailer.Prev.HasValue)
{
reader.Position = trailer.Prev.Value;
}
}while (trailer.Prev != null);
}
return(document);
}
public void SerializeTrailer(PdfWriter writer, PdfTrailer trailer)
{
writer.WriteLine(PdfTokens.Trailer);
SerdesFactory.GetFor(trailer).Serialize(writer, trailer, null);
}