/**
* Translate a PRIndirectReference to a PdfIndirectReference In addition, translates the object
* numbers, and copies the referenced object to the output file. NB: PRIndirectReferences (and
* PRIndirectObjects) really need to know what file they came from, because each file has its own
* namespace. The translation we do from their namespace to ours is *at best* heuristic, and
* guaranteed to fail under some circumstances.
*/
protected PdfIndirectReference copyIndirect(PRIndirectReference in)
throws IOException, BadPdfFormatException {
PdfIndirectReference theRef;
RefKey key = new RefKey(in);
IndirectReferences iRef = (IndirectReferences) indirects.get(key);
if (iRef != null) {
theRef = iRef.getRef();
if (iRef.getCopied()) {
return theRef;
}
} else {
theRef = body.getPdfIndirectReference();
iRef = new IndirectReferences(theRef);
indirects.put(key, iRef);
}
PdfObject obj = PdfReader.getPdfObjectRelease(in);
if (obj != null && obj.isDictionary()) {
PdfObject type = PdfReader.getPdfObjectRelease(((PdfDictionary) obj).get(PdfName.TYPE));
if (type != null && PdfName.PAGE.equals(type)) {
return theRef;
}
}
iRef.setCopied();
obj = copyObject(obj);
addToBody(obj, theRef);
return theRef;
}
/**
* Gets the content stream of a page as a PdfStream object.
*
* @param pageNumber the page of which you want the stream
* @param compressionLevel the compression level you want to apply to the stream
* @return a PdfStream object
* @since 2.1.3 (the method already existed without param compressionLevel)
*/
PdfStream getFormXObject(int pageNumber, int compressionLevel) throws IOException {
PdfDictionary page = reader.getPageNRelease(pageNumber);
PdfObject contents = PdfReader.getPdfObjectRelease(page.get(PdfName.CONTENTS));
PdfDictionary dic = new PdfDictionary();
byte bout[] = null;
if (contents != null) {
if (contents.isStream()) dic.putAll((PRStream) contents);
else bout = reader.getPageContent(pageNumber, file);
} else bout = new byte[0];
dic.put(PdfName.RESOURCES, PdfReader.getPdfObjectRelease(page.get(PdfName.RESOURCES)));
dic.put(PdfName.TYPE, PdfName.XOBJECT);
dic.put(PdfName.SUBTYPE, PdfName.FORM);
PdfImportedPage impPage = (PdfImportedPage) importedPages.get(new Integer(pageNumber));
dic.put(PdfName.BBOX, new PdfRectangle(impPage.getBoundingBox()));
PdfArray matrix = impPage.getMatrix();
if (matrix == null) dic.put(PdfName.MATRIX, IDENTITYMATRIX);
else dic.put(PdfName.MATRIX, matrix);
dic.put(PdfName.FORMTYPE, ONE);
PRStream stream;
if (bout == null) {
stream = new PRStream((PRStream) contents, dic);
} else {
stream = new PRStream(reader, bout, compressionLevel);
stream.putAll(dic);
}
return stream;
}
/**
* Retrieves the page labels from a PDF as an array of String objects.
*
* @param reader a PdfReader object that has the page labels you want to retrieve
* @return a String array or <code>null</code> if no page labels are present
*/
public static String[] getPageLabels(PdfReader reader) {
int n = reader.getNumberOfPages();
PdfDictionary dict = reader.getCatalog();
PdfDictionary labels =
(PdfDictionary) PdfReader.getPdfObjectRelease(dict.get(PdfName.PAGELABELS));
if (labels == null) return null;
String[] labelstrings = new String[n];
HashMap<Integer, PdfObject> numberTree = PdfNumberTree.readTree(labels);
int pagecount = 1;
Integer current;
String prefix = "";
char type = 'D';
for (int i = 0; i < n; i++) {
current = Integer.valueOf(i);
if (numberTree.containsKey(current)) {
PdfDictionary d = (PdfDictionary) PdfReader.getPdfObjectRelease(numberTree.get(current));
if (d.contains(PdfName.ST)) {
pagecount = ((PdfNumber) d.get(PdfName.ST)).intValue();
} else {
pagecount = 1;
}
if (d.contains(PdfName.P)) {
prefix = ((PdfString) d.get(PdfName.P)).toUnicodeString();
}
if (d.contains(PdfName.S)) {
type = ((PdfName) d.get(PdfName.S)).toString().charAt(1);
} else {
type = 'e';
}
}
switch (type) {
default:
labelstrings[i] = prefix + pagecount;
break;
case 'R':
labelstrings[i] = prefix + RomanNumberFactory.getUpperCaseString(pagecount);
break;
case 'r':
labelstrings[i] = prefix + RomanNumberFactory.getLowerCaseString(pagecount);
break;
case 'A':
labelstrings[i] = prefix + RomanAlphabetFactory.getUpperCaseString(pagecount);
break;
case 'a':
labelstrings[i] = prefix + RomanAlphabetFactory.getLowerCaseString(pagecount);
break;
case 'e':
labelstrings[i] = prefix;
break;
}
pagecount++;
}
return labelstrings;
}
/**
* Retrieves the page labels from a PDF as an array of {@link PdfPageLabelFormat} objects.
*
* @param reader a PdfReader object that has the page labels you want to retrieve
* @return a PdfPageLabelEntry array, containing an entry for each format change or <code>null
* </code> if no page labels are present
*/
public static PdfPageLabelFormat[] getPageLabelFormats(PdfReader reader) {
PdfDictionary dict = reader.getCatalog();
PdfDictionary labels =
(PdfDictionary) PdfReader.getPdfObjectRelease(dict.get(PdfName.PAGELABELS));
if (labels == null) return null;
HashMap<Integer, PdfObject> numberTree = PdfNumberTree.readTree(labels);
Integer numbers[] = new Integer[numberTree.size()];
numbers = numberTree.keySet().toArray(numbers);
Arrays.sort(numbers);
PdfPageLabelFormat[] formats = new PdfPageLabelFormat[numberTree.size()];
String prefix;
int numberStyle;
int pagecount;
for (int k = 0; k < numbers.length; ++k) {
Integer key = numbers[k];
PdfDictionary d = (PdfDictionary) PdfReader.getPdfObjectRelease(numberTree.get(key));
if (d.contains(PdfName.ST)) {
pagecount = ((PdfNumber) d.get(PdfName.ST)).intValue();
} else {
pagecount = 1;
}
if (d.contains(PdfName.P)) {
prefix = ((PdfString) d.get(PdfName.P)).toUnicodeString();
} else {
prefix = "";
}
if (d.contains(PdfName.S)) {
char type = ((PdfName) d.get(PdfName.S)).toString().charAt(1);
switch (type) {
case 'R':
numberStyle = UPPERCASE_ROMAN_NUMERALS;
break;
case 'r':
numberStyle = LOWERCASE_ROMAN_NUMERALS;
break;
case 'A':
numberStyle = UPPERCASE_LETTERS;
break;
case 'a':
numberStyle = LOWERCASE_LETTERS;
break;
default:
numberStyle = DECIMAL_ARABIC_NUMERALS;
break;
}
} else {
numberStyle = EMPTY;
}
formats[k] = new PdfPageLabelFormat(key.intValue() + 1, numberStyle, prefix, pagecount);
}
return formats;
}
/**
* After reading, we index all of the fields. Recursive.
*
* @param fieldlist An array of fields
* @param fieldDict the last field dictionary we encountered (recursively)
* @param title the pathname of the field, up to this point or null
*/
protected void iterateFields(PdfArray fieldlist, PRIndirectReference fieldDict, String title) {
for (Iterator it = fieldlist.getArrayList().iterator(); it.hasNext(); ) {
PRIndirectReference ref = (PRIndirectReference) it.next();
PdfDictionary dict = (PdfDictionary) PdfReader.getPdfObjectRelease(ref);
// if we are not a field dictionary, pass our parent's values
PRIndirectReference myFieldDict = fieldDict;
String myTitle = title;
PdfString tField = (PdfString) dict.get(PdfName.T);
boolean isFieldDict = tField != null;
if (isFieldDict) {
myFieldDict = ref;
if (title == null) myTitle = tField.toString();
else myTitle = title + '.' + tField.toString();
}
PdfArray kids = (PdfArray) dict.get(PdfName.KIDS);
if (kids != null) {
pushAttrib(dict);
iterateFields(kids, myFieldDict, myTitle);
stack.remove(stack.size() - 1); // pop
} else { // leaf node
if (myFieldDict != null) {
PdfDictionary mergedDict = (PdfDictionary) stack.get(stack.size() - 1);
if (isFieldDict) mergedDict = mergeAttrib(mergedDict, dict);
mergedDict.put(PdfName.T, new PdfString(myTitle));
FieldInformation fi = new FieldInformation(myTitle, mergedDict, myFieldDict);
fields.add(fi);
fieldByName.put(myTitle, fi);
}
}
}
}
/**
* Read, and comprehend the acroform
*
* @param root the docment root
*/
public void readAcroForm(PdfDictionary root) {
if (root == null) return;
hashMap = root.hashMap;
pushAttrib(root);
PdfArray fieldlist = (PdfArray) PdfReader.getPdfObjectRelease(root.get(PdfName.FIELDS));
iterateFields(fieldlist, null, null);
}
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"));
}
}
}
private IntHashtable readWidths(PdfArray ws) {
IntHashtable hh = new IntHashtable();
if (ws == null) return hh;
for (int k = 0; k < ws.size(); ++k) {
int c1 = ((PdfNumber) PdfReader.getPdfObjectRelease(ws.getPdfObject(k))).intValue();
PdfObject obj = PdfReader.getPdfObjectRelease(ws.getPdfObject(++k));
if (obj.isArray()) {
PdfArray a2 = (PdfArray) obj;
for (int j = 0; j < a2.size(); ++j) {
int c2 = ((PdfNumber) PdfReader.getPdfObjectRelease(a2.getPdfObject(j))).intValue();
hh.put(c1++, c2);
}
} else {
int c2 = ((PdfNumber) obj).intValue();
int w = ((PdfNumber) PdfReader.getPdfObjectRelease(ws.getPdfObject(++k))).intValue();
for (; c1 <= c2; ++c1) hh.put(c1, w);
}
}
return hh;
}
void writeAllVisited() throws IOException {
while (!nextRound.isEmpty()) {
ArrayList vec = nextRound;
nextRound = new ArrayList();
for (int k = 0; k < vec.size(); ++k) {
Integer i = (Integer) vec.get(k);
if (!visited.containsKey(i)) {
visited.put(i, null);
int n = i.intValue();
writer.addToBody(reader.getPdfObjectRelease(n), myXref[n]);
}
}
}
}
private CMapToUnicode processToUnicode() {
CMapToUnicode cmapRet = null;
PdfObject toUni = PdfReader.getPdfObjectRelease(this.font.get(PdfName.TOUNICODE));
if (toUni instanceof PRStream) {
try {
byte[] touni = PdfReader.getStreamBytes((PRStream) toUni);
CidLocationFromByte lb = new CidLocationFromByte(touni);
cmapRet = new CMapToUnicode();
CMapParserEx.parseCid("", cmapRet, lb);
} catch (Exception e) {
cmapRet = null;
}
}
return cmapRet;
}
/**
* 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 (Iterator it = in.getKeys().iterator(); it.hasNext(); ) {
PdfName key = (PdfName) it.next();
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;
}
/** Creates the new PDF by merging the fields and forms. */
protected void closeIt() throws IOException {
for (int k = 0; k < readers.size(); ++k) {
readers.get(k).removeFields();
}
for (int r = 0; r < readers.size(); ++r) {
PdfReader reader = readers.get(r);
for (int page = 1; page <= reader.getNumberOfPages(); ++page) {
pageRefs.add(getNewReference(reader.getPageOrigRef(page)));
pageDics.add(reader.getPageN(page));
}
}
mergeFields();
createAcroForms();
for (int r = 0; r < readers.size(); ++r) {
PdfReader reader = readers.get(r);
for (int page = 1; page <= reader.getNumberOfPages(); ++page) {
PdfDictionary dic = reader.getPageN(page);
PdfIndirectReference pageRef = getNewReference(reader.getPageOrigRef(page));
PdfIndirectReference parent = root.addPageRef(pageRef);
dic.put(PdfName.PARENT, parent);
propagate(dic, pageRef, false);
}
}
for (Map.Entry<PdfReader, IntHashtable> entry : readers2intrefs.entrySet()) {
PdfReader reader = entry.getKey();
try {
file = reader.getSafeFile();
file.reOpen();
IntHashtable t = entry.getValue();
int keys[] = t.toOrderedKeys();
for (int k = 0; k < keys.length; ++k) {
PRIndirectReference ref = new PRIndirectReference(reader, keys[k]);
addToBody(PdfReader.getPdfObjectRelease(ref), t.get(keys[k]));
}
} finally {
try {
file.close();
// TODO: Removed - the user should be responsible for closing all PdfReaders. But, this
// could cause a lot of memory leaks in code out there that hasn't been properly closing
// things - maybe add a finalizer to PdfReader that calls PdfReader#close() ??
// reader.close();
} catch (Exception e) {
// empty on purpose
}
}
}
pdf.close();
}
private void processType0(PdfDictionary font) {
try {
PdfObject toUniObject = PdfReader.getPdfObjectRelease(font.get(PdfName.TOUNICODE));
PdfArray df = (PdfArray) PdfReader.getPdfObjectRelease(font.get(PdfName.DESCENDANTFONTS));
PdfDictionary cidft = (PdfDictionary) PdfReader.getPdfObjectRelease(df.getPdfObject(0));
PdfNumber dwo = (PdfNumber) PdfReader.getPdfObjectRelease(cidft.get(PdfName.DW));
int dw = 1000;
if (dwo != null) dw = dwo.intValue();
IntHashtable widths =
readWidths((PdfArray) PdfReader.getPdfObjectRelease(cidft.get(PdfName.W)));
PdfDictionary fontDesc =
(PdfDictionary) PdfReader.getPdfObjectRelease(cidft.get(PdfName.FONTDESCRIPTOR));
fillFontDesc(fontDesc);
if (toUniObject instanceof PRStream) {
fillMetrics(PdfReader.getStreamBytes((PRStream) toUniObject), widths, dw);
}
} catch (Exception e) {
throw new ExceptionConverter(e);
}
}
PdfObject getResources(int pageNumber) {
PdfObject obj =
PdfReader.getPdfObjectRelease(reader.getPageNRelease(pageNumber).get(PdfName.RESOURCES));
return obj;
}
