private static BaseFont FindFontInFontDict(PdfDictionary fontDict,
string sourceFieldFontName)
{
var fieldFontName = fontDict.Keys
.FirstOrDefault(f =>
sourceFieldFontName.StartsWith(f.ToString()));
var iRef = (PRIndirectReference)fontDict
.GetAsIndirectObject(fieldFontName);
var font = iRef != null?BaseFont.CreateFont(iRef) : null;
if (!string.IsNullOrWhiteSpace(font?.Encoding))
{
return(font);
}
foreach (var fontName in fontDict.Keys)
{
iRef = (PRIndirectReference)fontDict
.GetAsIndirectObject(fontName);
font = iRef != null?BaseFont.CreateFont(iRef) : null;
if (!string.IsNullOrWhiteSpace(font?.Encoding))
{
return(font);
}
}
return(null);
}
/**
* Creates a StructureObject for an OBJR dictionary.
* @param structElem the parent structure element
* @param ref the reference of the parent structure element
* @param dict the object reference dictionary
*/
public StructureObject(PdfDictionary structElem, PdfIndirectReference refa, PdfDictionary dict) {
this.structElem = structElem;
this.refa = refa;
this.obj = dict.GetDirectObject(PdfName.OBJ);
this.objref = dict.GetAsIndirectObject(PdfName.OBJ);
this.structParent = ((PdfDictionary) obj).GetAsNumber(PdfName.STRUCTPARENT).IntValue;
PdfIndirectReference pg = dict.GetAsIndirectObject(PdfName.PG);
if (pg == null)
pg = structElem.GetAsIndirectObject(PdfName.PG);
this.pageref = pg.Number;
}
/**
* Creates a StructureObject for an OBJR dictionary.
* @param structElem the parent structure element
* @param ref the reference of the parent structure element
* @param dict the object reference dictionary
*/
public StructureObject(PdfDictionary structElem, PdfIndirectReference refa, PdfDictionary dict)
{
this.structElem = structElem;
this.refa = refa;
this.obj = dict.GetDirectObject(PdfName.OBJ);
this.objref = dict.GetAsIndirectObject(PdfName.OBJ);
this.structParent = ((PdfDictionary)obj).GetAsNumber(PdfName.STRUCTPARENT).IntValue;
PdfIndirectReference pg = dict.GetAsIndirectObject(PdfName.PG);
if (pg == null)
{
pg = structElem.GetAsIndirectObject(PdfName.PG);
}
this.pageref = pg.Number;
}
private void TestFile(String filename, int page, String objectid)
{
PdfReader pdfReader = TestResourceUtils.GetResourceAsPdfReader(TEST_RESOURCES_PATH, filename);
try
{
PdfDictionary resources = pdfReader.GetPageResources(page);
PdfDictionary xobjects = resources.GetAsDict(PdfName.XOBJECT);
PdfIndirectReference objRef = xobjects.GetAsIndirectObject(new PdfName(objectid));
if (objRef == null)
{
throw new NullReferenceException("Reference " + objectid + " not found - Available keys are " + xobjects.Keys);
}
PRStream stream = (PRStream)PdfReader.GetPdfObject(objRef);
PdfDictionary colorSpaceDic = resources != null?resources.GetAsDict(PdfName.COLORSPACE) : null;
PdfImageObject img = new PdfImageObject(stream, colorSpaceDic);
byte[] result = img.GetImageAsBytes();
Assert.NotNull(result);
int zeroCount = 0;
foreach (byte b in result)
{
if (b == 0)
{
zeroCount++;
}
}
Assert.IsTrue(zeroCount > 0);
}
finally
{
pdfReader.Close();
}
}
// ---------------------------------------------------------------------------
/**
* Extracts document level attachments
* @param PDF from which document level attachments will be extracted
* @param zip the ZipFile object to add the extracted images
*/
public void ExtractDocLevelAttachments(byte[] pdf, ZipFile zip)
{
PdfReader reader = new PdfReader(pdf);
PdfDictionary root = reader.Catalog;
PdfDictionary documentnames = root.GetAsDict(PdfName.NAMES);
PdfDictionary embeddedfiles =
documentnames.GetAsDict(PdfName.EMBEDDEDFILES);
PdfArray filespecs = embeddedfiles.GetAsArray(PdfName.NAMES);
for (int i = 0; i < filespecs.Size;)
{
filespecs.GetAsString(i++);
PdfDictionary filespec = filespecs.GetAsDict(i++);
PdfDictionary refs = filespec.GetAsDict(PdfName.EF);
foreach (PdfName key in refs.Keys)
{
PRStream stream = (PRStream)PdfReader.GetPdfObject(
refs.GetAsIndirectObject(key)
);
zip.AddEntry(
filespec.GetAsString(key).ToString(),
PdfReader.GetStreamBytes(stream)
);
}
}
}
public Boolean PDFPortfolio(byte[] pdf, string filename, Boolean weitergabe, SPFolder tempfolder, string tempuploadurl, string DocID)
{
Boolean portfolio;
using (PdfReader reader = new PdfReader(pdf))
{
PdfReader.unethicalreading = true;
PdfDictionary documentNames = null;
PdfDictionary embeddedFiles = null;
PdfDictionary fileArray = null;
PdfDictionary file = null;
PRStream stream = null;
PdfDictionary catalog = reader.Catalog;
documentNames = (PdfDictionary)PdfReader.GetPdfObject(catalog.Get(PdfName.NAMES));
if (documentNames != null)
{
//Erster Check: Portfolio ist vorhanden
embeddedFiles = (PdfDictionary)PdfReader.GetPdfObject(documentNames.Get(PdfName.EMBEDDEDFILES));
if (embeddedFiles != null)
{
//Zweiter Check: Portfolio ist wirklich vorhanden
portfolio = true;
PdfArray filespecs = embeddedFiles.GetAsArray(PdfName.NAMES);
for (int i = 0; i < filespecs.Size; i++)
{
i++;
fileArray = filespecs.GetAsDict(i);
file = fileArray.GetAsDict(PdfName.EF);
int filecount = 0;
foreach (PdfName key in file.Keys)
{
stream = (PRStream)PdfReader.GetPdfObject(file.GetAsIndirectObject(key));
//string attachedFileName = folderName + fileArray.GetAsString(key).ToString();
filecount++;
string attachedFileName = DocID + "_" + filename + "_ExportFromPortfolio_" + i + ".pdf";
byte[] attachedFileBytes = PdfReader.GetStreamBytes(stream);
SPFile attachmentuploadfile = tempfolder.Files.Add(tempuploadurl + attachedFileName, attachedFileBytes, true);
SPListItem attachmentitem = attachmentuploadfile.Item;
attachmentitem["Weitergabe"] = weitergabe;
attachmentitem.SystemUpdate();
}
}
}
else
{
//Zweiter Check: Doch kein Portfolio vorhanden
portfolio = false;
}
}
else
{
//Erster check: Kein Portfolio vorhanden
portfolio = false;
}
}
return(portfolio);
}
/**
* Creates a StructureObject for an OBJR dictionary.
* @param structElem the parent structure element
* @param ref the reference of the parent structure element
* @param dict the object reference dictionary
*/
public StructureObject(PdfDictionary structElem, PdfIndirectReference refa, PdfDictionary dict)
{
this.structElem = structElem;
this.refa = refa;
this.obj = dict.GetDirectObject(PdfName.OBJ);
this.objref = dict.GetAsIndirectObject(PdfName.OBJ);
PdfNumber sp = ((PdfDictionary)obj).GetAsNumber(PdfName.STRUCTPARENT);
if (sp == null)
{
throw new InvalidPdfException("structparentid.not.found");
}
this.structParent = sp.IntValue;
PdfIndirectReference pg = dict.GetAsIndirectObject(PdfName.PG);
if (pg == null)
{
pg = structElem.GetAsIndirectObject(PdfName.PG);
}
this.pageref = pg.Number;
}
/**
* Processes the kids object of a StructElem dictionary.
* This kids object can be a number (MCID), another StructElem dictionary,
* an MCR dictionary, an OBJR dictionary, or an array of the above.
* @param structElem the StructElem dictionary
* @param ref the reference to the StructElem dictionary
* @param object the kids object
*/
protected virtual void ProcessStructElemKids(PdfDictionary structElem, PdfIndirectReference refa, PdfObject objecta)
{
if (LOGGER.IsLogging(Level.INFO))
{
LOGGER.Info(String.Format("addStructureItem({0}, {1}, {2})", structElem, refa, objecta));
}
if (objecta == null)
{
return;
}
StructureItem item;
switch (objecta.Type)
{
case PdfObject.NUMBER:
item = new StructureMCID(structElem.GetAsIndirectObject(PdfName.PG), (PdfNumber)objecta);
Add(item);
LOGGER.Info("Added " + item);
break;
case PdfObject.ARRAY:
PdfArray array = (PdfArray)objecta;
for (int i = 0; i < array.Size; i++)
{
ProcessStructElemKids(structElem, array.GetAsIndirectObject(i), array.GetDirectObject(i));
}
break;
case PdfObject.DICTIONARY:
PdfDictionary dict = (PdfDictionary)objecta;
if (dict.CheckType(PdfName.MCR))
{
item = new StructureMCID(dict);
Add(item);
LOGGER.Info("Added " + item);
}
else if (dict.CheckType(PdfName.OBJR))
{
item = new StructureObject(structElem, refa, dict);
Add(item);
LOGGER.Info("Added " + item);
}
else
{
ProcessStructElems(dict, refa);
}
break;
}
}
public static string ExtractEdiconData(string srcEdiconPdfFileName)
{
PdfReader reader = null;
//
try
{
reader = new PdfReader(srcEdiconPdfFileName);
//
PdfDictionary root = reader.Catalog;
PdfDictionary documentnames = root.GetAsDict(PdfName.NAMES);
PdfDictionary embeddedfiles = documentnames.GetAsDict(PdfName.EMBEDDEDFILES);
PdfArray filespecs = embeddedfiles.GetAsArray(PdfName.NAMES);
//
for (int i = 0; i < filespecs.Size;)
{
filespecs.GetAsString(i++);
PdfDictionary filespec = filespecs.GetAsDict(i++);
PdfDictionary refs = filespec.GetAsDict(PdfName.EF);
//
foreach (PdfName key in refs.Keys)
{
PRStream stream = (PRStream)PdfReader.GetPdfObject(refs.GetAsIndirectObject(key));
//
var outName = filespec.GetAsString(key).ToString();
//
if (outName.Equals(EDICON_EMBED_FILENAME, StringComparison.OrdinalIgnoreCase))
{
byte[] outByteArray = PdfReader.GetStreamBytes(stream);
string ediconData = Encoding.UTF8.GetString(outByteArray);
return(ediconData);
}
}
}
}
catch (Exception ex)
{
//Console.WriteLine("ExtractEdiconData error: " + ex.Message);
throw new EdiconException("Soubor neobsahuje platnou přílohu Edicon");
}
finally
{
if (reader != null)
{
reader.Close();
}
}
return(null);
}
internal void ExtractAttachments(string file_name, string folderName, PdfWriter write)
{
PdfDictionary documentNames = null;
PdfDictionary embeddedFiles = null;
PdfDictionary fileArray = null;
PdfDictionary file = null;
PRStream stream = null;
PdfReader reader = new PdfReader(file_name);
PdfDictionary catalog = reader.Catalog;
documentNames = (PdfDictionary)PdfReader.GetPdfObject(catalog.Get(PdfName.NAMES));
if (documentNames != null)
{
embeddedFiles = (PdfDictionary)PdfReader.GetPdfObject(documentNames.Get(PdfName.EMBEDDEDFILES));
if (embeddedFiles != null)
{
PdfArray filespecs = embeddedFiles.GetAsArray(PdfName.NAMES);
for (int i = 0; i < filespecs.Size; i++)
{
i++;
fileArray = filespecs.GetAsDict(i);
file = fileArray.GetAsDict(PdfName.EF);
foreach (PdfName key in file.Keys)
{
stream = (PRStream)PdfReader.GetPdfObject(file.GetAsIndirectObject(key));
string attachedFileName = folderName + fileArray.GetAsString(key).ToString();
byte[] attachedFileBytes = PdfReader.GetStreamBytes(stream);
//graba el anexo extraido
System.IO.File.WriteAllBytes(attachedFileName, attachedFileBytes);
//adjunta los anexos
PdfFileSpecification pfs = PdfFileSpecification.FileEmbedded(write, attachedFileName, fileArray.GetAsString(key).ToString(), null);
write.AddFileAttachment(pfs);
//borramos los archivos extraidos
System.IO.File.Delete(attachedFileName);
}
}
}
}
}
public void ManipulatePdf(string src, string dest)
{
PdfReader reader = new PdfReader(src);
// We assume that there's a single large picture on the first page
PdfDictionary page = reader.GetPageN(1);
PdfDictionary resources = page.GetAsDict(PdfName.RESOURCES);
PdfDictionary xobjects = resources.GetAsDict(PdfName.XOBJECT);
Dictionary <PdfName, PdfObject> .KeyCollection.Enumerator enumerator = xobjects.Keys.GetEnumerator();
enumerator.MoveNext();
PdfName imgName = enumerator.Current;
Image img = Image.GetInstance((PRIndirectReference)xobjects.GetAsIndirectObject(imgName));
img.SetAbsolutePosition(0, 0);
img.ScaleAbsolute(reader.GetPageSize(1));
PdfStamper stamper = new PdfStamper(reader, new FileStream(dest, FileMode.Create));
stamper.GetOverContent(1).AddImage(img);
stamper.Close();
reader.Close();
}
/**
* Displays an XObject using the registered handler for this XObject's subtype
* @param xobjectName the name of the XObject to retrieve from the resource dictionary
*/
private void DisplayXObject(PdfName xobjectName)
{
PdfDictionary xobjects = resources.GetAsDict(PdfName.XOBJECT);
PdfObject xobject = xobjects.GetDirectObject(xobjectName);
PdfStream xobjectStream = (PdfStream)xobject;
PdfName subType = xobjectStream.GetAsName(PdfName.SUBTYPE);
if (xobject.IsStream())
{
IXObjectDoHandler handler;
xobjectDoHandlers.TryGetValue(subType, out handler);
if (handler == null)
{
handler = xobjectDoHandlers[PdfName.DEFAULT];
}
handler.HandleXObject(this, xobjectStream, xobjects.GetAsIndirectObject(xobjectName));
}
else
{
throw new InvalidOperationException(MessageLocalization.GetComposedMessage("XObject.1.is.not.a.stream", xobjectName));
}
}
/**
* Creates a list of StructuredItem objects.
* @param reader the reader holding the PDF to examine
*/
public StructureItems(PdfReader reader)
{
PdfDictionary catalog = reader.Catalog;
structTreeRoot = catalog.GetAsDict(PdfName.STRUCTTREEROOT);
if (structTreeRoot == null)
{
throw new DocumentException(MessageLocalization.GetComposedMessage("can.t.read.document.structure"));
}
// Storing the parent tree
parentTree = PdfNumberTree.ReadTree(structTreeRoot.GetAsDict(PdfName.PARENTTREE));
structTreeRoot.Remove(PdfName.STRUCTPARENTS);
// Examining the StructTreeRoot
PdfObject objecta = structTreeRoot.GetDirectObject(PdfName.K);
if (objecta == null)
{
return;
}
switch (objecta.Type)
{
case PdfObject.DICTIONARY:
LOGGER.Info("StructTreeRoot refers to dictionary");
ProcessStructElems((PdfDictionary)objecta, structTreeRoot.GetAsIndirectObject(PdfName.K));
break;
case PdfObject.ARRAY:
LOGGER.Info("StructTreeRoot refers to array");
PdfArray array = (PdfArray)objecta;
for (int i = 0; i < array.Size; i++)
{
ProcessStructElems(array.GetAsDict(i), array.GetAsIndirectObject(i));
}
break;
}
}
/**
* Creates a StructurItem using an MCR dictionary.
* @param dict an MCR dictionary
*/
public StructureMCID(PdfDictionary mcr)
{
mcid = mcr.GetAsNumber(PdfName.MCID).IntValue;
pageref = mcr.GetAsIndirectObject(PdfName.PG).Number;
}
/**
* Creates a StructurItem using an MCR dictionary.
* @param dict an MCR dictionary
*/
public StructureMCID(PdfDictionary mcr)
{
mcid = mcr.GetAsNumber(PdfName.MCID).IntValue;
pageref = mcr.GetAsIndirectObject(PdfName.PG).Number;
}
private String GetParentIndRefStr(PdfDictionary dict)
{
return(dict.GetAsIndirectObject(PdfName.PARENT).ToString());
}
/**
* Converts an annotation structure item to a Form XObject annotation.
* @param item the structure item
* @throws IOException
*/
protected void ConvertToXObject(StructureObject item)
{
PdfDictionary structElem = item.GetStructElem();
if (structElem == null)
{
return;
}
PdfDictionary dict = item.GetObjAsDict();
if (dict == null || !dict.CheckType(PdfName.ANNOT))
{
return;
}
PdfDictionary ap = dict.GetAsDict(PdfName.AP);
if (ap == null)
{
return;
}
PdfNumber structParent = dict.GetAsNumber(PdfName.STRUCTPARENT);
if (structParent == null)
{
return;
}
PdfStream stream = ap.GetAsStream(PdfName.N);
if (stream == null)
{
return;
}
stream.Put(PdfName.STRUCTPARENT, structParent);
PdfIndirectReference xobjr = ap.GetAsIndirectObject(PdfName.N);
if (xobjr == null)
{
return;
}
// remove the annotation from the page
for (int i = 0; i < annots.Length; i++)
{
PdfIndirectReference annotref = annots.GetAsIndirectObject(i);
if (item.GetObjRef().Number == annotref.Number)
{
annots.Remove(i);
break;
}
}
// replace the existing attributes by a PrintField attribute
PdfDictionary attribute = new PdfDictionary();
attribute.Put(PdfName.O, PdfName.PRINTFIELD);
PdfString description = dict.GetAsString(PdfName.TU);
if (description == null)
{
description = dict.GetAsString(PdfName.T);
}
if (PdfName.BTN.Equals(dict.Get(PdfName.FT)))
{
PdfNumber fflags = dict.GetAsNumber(PdfName.FF);
if (fflags != null)
{
int ff = fflags.IntValue;
if ((ff & PdfFormField.FF_PUSHBUTTON) != 0)
{
attribute.Put(PdfName.ROLE, PdfName.PB);
}
// I don't think the condition below will ever be true
if ((ff & PdfFormField.FF_RADIO) != 0)
{
attribute.Put(PdfName.ROLE, PdfName.rb);
}
else
{
attribute.Put(PdfName.ROLE, PdfName.CB);
}
}
}
else
{
attribute.Put(PdfName.ROLE, PdfName.TV);
}
attribute.Put(PdfName.DESC, description);
// Updating the values of the StructElem dictionary
PdfString t = structElem.GetAsString(PdfName.T);
if (t == null || t.ToString().Trim().Length == 0)
{
structElem.Put(PdfName.T, dict.GetAsString(PdfName.T));
}
structElem.Put(PdfName.A, attribute);
structElem.Put(PdfName.S, PdfName.P);
structElem.Put(PdfName.PG, pageref);
// Defining a new MCID
int mcid = items.ProcessMCID(structParents, item.GetRef());
LOGGER.Info("Using MCID " + mcid);
structElem.Put(PdfName.K, new PdfNumber(mcid));
// removing the annotation from the parent tree
items.RemoveFromParentTree(structParent);
// Adding the XObject to the page
PdfName xobj = new PdfName("XObj" + structParent.IntValue);
LOGGER.Info("Creating XObject with name " + xobj);
xobjects.Put(xobj, xobjr);
PdfArray array = dict.GetAsArray(PdfName.RECT);
// Getting the position of the annotation
Rectangle rect = new Rectangle(
array.GetAsNumber(0).FloatValue, array.GetAsNumber(1).FloatValue,
array.GetAsNumber(2).FloatValue, array.GetAsNumber(3).FloatValue);
rect.Normalize();
// A Do operator is forbidden inside a text block
if (inText && !btWrite)
{
LOGGER.Debug("Introducing extra ET");
byte[] bytes = Encoding.ASCII.GetBytes("ET\n");
baos.Write(bytes, 0, bytes.Length);
etExtra = true;
}
// Writing the marked-content sequence with the Do operator
// Note that the position assumes that the CTM wasn't changed in the graphics state
// TODO: do the math if the CTM did change!
ByteBuffer buf = new ByteBuffer();
buf.Append("/P <</MCID ");
buf.Append(mcid);
buf.Append(">> BDC\n");
buf.Append("q 1 0 0 1 ");
buf.Append(rect.Left.ToString(CultureInfo.InvariantCulture));
buf.Append(" ");
buf.Append(rect.Bottom.ToString(CultureInfo.InvariantCulture));
buf.Append(" cm ");
buf.Append(xobj.GetBytes());
buf.Append(" Do Q\n");
buf.Append("EMC\n");
buf.Flush();
buf.WriteTo(baos);
// if we were inside a text block, we've introduced an ET, so we'll need to write a BT
if (inText)
{
btWrite = true;
}
}
public static List <Attachment> GetAttachments(Stream stream, string password = null)
{
PdfReader reader = null;
if (!string.IsNullOrWhiteSpace(password))
{
reader = new PdfReader(stream, Encoding.ASCII.GetBytes(password));
}
else
{
reader = new PdfReader(stream);
}
#region Variables
PdfDictionary catalog = null;
PdfDictionary documentNames = null;
PdfDictionary embeddedFiles = null;
PdfDictionary fileArray = null;
PdfDictionary file = null;
PRStream prstream = null;
Attachment fContent = null;
List <Attachment> lstAtt = null;
#endregion Variables
catalog = reader.Catalog;
lstAtt = new List <Attachment>();
documentNames = (PdfDictionary)PdfReader.GetPdfObject(catalog.Get(PdfName.NAMES));
if (documentNames != null)
{
embeddedFiles = (PdfDictionary)PdfReader.GetPdfObject(documentNames.Get(PdfName.EMBEDDEDFILES));
if (embeddedFiles != null)
{
PdfArray filespecs = embeddedFiles.GetAsArray(PdfName.NAMES);
for (int i = 0; i < filespecs.Size; i++)
{
i++;
fileArray = filespecs.GetAsDict(i);
file = fileArray.GetAsDict(PdfName.EF);
foreach (PdfName key in file.Keys)
{
prstream = (PRStream)PdfReader.GetPdfObject(file.GetAsIndirectObject(key));
fContent = new Attachment();
fContent.Name = fileArray.GetAsString(key).ToString();
fContent.Content = PdfReader.GetStreamBytes(prstream);
lstAtt.Add(fContent);
}
}
}
}
return(lstAtt);
}
