/**
* Extracts document level attachments
*
* @param filename a file from which document level attachments will be extracted
* @throws IOException
*/
public void extractDocLevelAttachments(String filename) throws IOException {
PdfReader reader = new PdfReader(filename);
PdfDictionary root = reader.getCatalog();
PdfDictionary documentnames = root.getAsDict(PdfName.NAMES);
PdfDictionary embeddedfiles = documentnames.getAsDict(PdfName.EMBEDDEDFILES);
PdfArray filespecs = embeddedfiles.getAsArray(PdfName.NAMES);
PdfDictionary filespec;
PdfDictionary refs;
FileOutputStream fos;
PRStream stream;
for (int i = 0; i < filespecs.size(); ) {
filespecs.getAsString(i++);
filespec = filespecs.getAsDict(i++);
refs = filespec.getAsDict(PdfName.EF);
for (PdfName key : refs.getKeys()) {
fos = new FileOutputStream(String.format(PATH, filespec.getAsString(key).toString()));
stream = (PRStream) PdfReader.getPdfObject(refs.getAsIndirectObject(key));
fos.write(PdfReader.getStreamBytes(stream));
fos.flush();
fos.close();
}
}
reader.close();
}
@SuppressWarnings("unchecked")
void mergeField(String name, AcroFields.Item item) {
HashMap<String, Object> map = fieldTree;
StringTokenizer tk = new StringTokenizer(name, ".");
if (!tk.hasMoreTokens()) return;
while (true) {
String s = tk.nextToken();
Object obj = map.get(s);
if (tk.hasMoreTokens()) {
if (obj == null) {
obj = new HashMap();
map.put(s, obj);
map = (HashMap<String, Object>) obj;
continue;
} else if (obj instanceof HashMap) map = (HashMap<String, Object>) obj;
else return;
} else {
if (obj instanceof HashMap) return;
PdfDictionary merged = item.getMerged(0);
if (obj == null) {
PdfDictionary field = new PdfDictionary();
if (PdfName.SIG.equals(merged.get(PdfName.FT))) hasSignature = true;
for (Object element : merged.getKeys()) {
PdfName key = (PdfName) element;
if (fieldKeys.containsKey(key)) field.put(key, merged.get(key));
}
ArrayList<Object> list = new ArrayList<Object>();
list.add(field);
createWidgets(list, item);
map.put(s, list);
} else {
ArrayList<Object> list = (ArrayList<Object>) obj;
PdfDictionary field = (PdfDictionary) list.get(0);
PdfName type1 = (PdfName) field.get(PdfName.FT);
PdfName type2 = (PdfName) merged.get(PdfName.FT);
if (type1 == null || !type1.equals(type2)) return;
int flag1 = 0;
PdfObject f1 = field.get(PdfName.FF);
if (f1 != null && f1.isNumber()) flag1 = ((PdfNumber) f1).intValue();
int flag2 = 0;
PdfObject f2 = merged.get(PdfName.FF);
if (f2 != null && f2.isNumber()) flag2 = ((PdfNumber) f2).intValue();
if (type1.equals(PdfName.BTN)) {
if (((flag1 ^ flag2) & PdfFormField.FF_PUSHBUTTON) != 0) return;
if ((flag1 & PdfFormField.FF_PUSHBUTTON) == 0
&& ((flag1 ^ flag2) & PdfFormField.FF_RADIO) != 0) return;
} else if (type1.equals(PdfName.CH)) {
if (((flag1 ^ flag2) & PdfFormField.FF_COMBO) != 0) return;
}
createWidgets(list, item);
}
return;
}
}
}
/**
* Translate a PRDictionary to a PdfDictionary. Also translate all of the objects contained in it.
*/
protected PdfDictionary copyDictionary(PdfDictionary in)
throws IOException, BadPdfFormatException {
PdfDictionary out = new PdfDictionary();
PdfObject type = PdfReader.getPdfObjectRelease(in.get(PdfName.TYPE));
for (Object element : in.getKeys()) {
PdfName key = (PdfName) element;
PdfObject value = in.get(key);
// System.out.println("Copy " + key);
if (type != null && PdfName.PAGE.equals(type)) {
if (!key.equals(PdfName.B) && !key.equals(PdfName.PARENT)) out.put(key, copyObject(value));
} else out.put(key, copyObject(value));
}
return out;
}
void createWidgets(ArrayList<Object> list, AcroFields.Item item) {
for (int k = 0; k < item.size(); ++k) {
list.add(item.getPage(k));
PdfDictionary merged = item.getMerged(k);
PdfObject dr = merged.get(PdfName.DR);
if (dr != null)
PdfFormField.mergeResources(resources, (PdfDictionary) PdfReader.getPdfObject(dr));
PdfDictionary widget = new PdfDictionary();
for (Object element : merged.getKeys()) {
PdfName key = (PdfName) element;
if (widgetKeys.containsKey(key)) widget.put(key, merged.get(key));
}
widget.put(iTextTag, new PdfNumber(item.getTabOrder(k).intValue() + 1));
list.add(widget);
}
}
void propagate(PdfObject obj, PdfIndirectReference refo, boolean restricted) throws IOException {
if (obj == null) return;
// if (refo != null)
// addToBody(obj, refo);
if (obj instanceof PdfIndirectReference) return;
switch (obj.type()) {
case PdfObject.DICTIONARY:
case PdfObject.STREAM:
{
PdfDictionary dic = (PdfDictionary) obj;
for (PdfName key : dic.getKeys()) {
if (restricted && (key.equals(PdfName.PARENT) || key.equals(PdfName.KIDS))) continue;
PdfObject ob = dic.get(key);
if (ob != null && ob.isIndirect()) {
PRIndirectReference ind = (PRIndirectReference) ob;
if (!setVisited(ind) && !isPage(ind)) {
PdfIndirectReference ref = getNewReference(ind);
propagate(PdfReader.getPdfObjectRelease(ind), ref, restricted);
}
} else propagate(ob, null, restricted);
}
break;
}
case PdfObject.ARRAY:
{
// PdfArray arr = new PdfArray();
for (Iterator<PdfObject> it = ((PdfArray) obj).listIterator(); it.hasNext(); ) {
PdfObject ob = it.next();
if (ob != null && ob.isIndirect()) {
PRIndirectReference ind = (PRIndirectReference) ob;
if (!isVisited(ind) && !isPage(ind)) {
PdfIndirectReference ref = getNewReference(ind);
propagate(PdfReader.getPdfObjectRelease(ind), ref, restricted);
}
} else propagate(ob, null, restricted);
}
break;
}
case PdfObject.INDIRECT:
{
throw new RuntimeException(
MessageLocalization.getComposedMessage("reference.pointing.to.reference"));
}
}
}
