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com.itextpdf.text.pdf.PdfCopyFieldsImp Maven / Gradle / Ivy
/*
* $Id: d58c359155c8a324a53dc34418f776a1f0f097ed $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2016 iText Group NV
* Authors: Bruno Lowagie, Paulo Soares, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
* OF THIRD PARTY RIGHTS
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: [email protected]
*/
package com.itextpdf.text.pdf;
import java.io.IOException;
import java.io.OutputStream;
import java.util.*;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.ExceptionConverter;
import com.itextpdf.text.error_messages.MessageLocalization;
import com.itextpdf.text.exceptions.BadPasswordException;
import com.itextpdf.text.log.Counter;
import com.itextpdf.text.log.CounterFactory;
import com.itextpdf.text.pdf.AcroFields.Item;
/**
*
* @author psoares
*/
@Deprecated
class PdfCopyFieldsImp extends PdfWriter {
private static final PdfName iTextTag = new PdfName("_iTextTag_");
private static final Integer zero = Integer.valueOf(0);
ArrayList readers = new ArrayList();
HashMap readers2intrefs = new HashMap();
HashMap pages2intrefs = new HashMap();
HashMap visited = new HashMap();
ArrayList fields = new ArrayList();
RandomAccessFileOrArray file;
HashMap fieldTree = new HashMap();
ArrayList pageRefs = new ArrayList();
ArrayList pageDics = new ArrayList();
PdfDictionary resources = new PdfDictionary();
PdfDictionary form;
boolean closing = false;
Document nd;
private HashMap> tabOrder;
private ArrayList calculationOrder = new ArrayList();
private ArrayList calculationOrderRefs;
private boolean hasSignature;
private boolean needAppearances = false;
private HashSet mergedRadioButtons = new HashSet();
protected Counter COUNTER = CounterFactory.getCounter(PdfCopyFields.class);
protected Counter getCounter() {
return COUNTER;
}
PdfCopyFieldsImp(OutputStream os) throws DocumentException {
this(os, '\0');
}
PdfCopyFieldsImp(OutputStream os, char pdfVersion) throws DocumentException {
super(new PdfDocument(), os);
pdf.addWriter(this);
if (pdfVersion != 0)
super.setPdfVersion(pdfVersion);
nd = new Document();
nd.addDocListener(pdf);
}
void addDocument(PdfReader reader, List pagesToKeep) throws DocumentException, IOException {
if (!readers2intrefs.containsKey(reader) && reader.isTampered())
throw new DocumentException(MessageLocalization.getComposedMessage("the.document.was.reused"));
reader = new PdfReader(reader);
reader.selectPages(pagesToKeep);
if (reader.getNumberOfPages() == 0)
return;
reader.setTampered(false);
addDocument(reader);
}
void addDocument(PdfReader reader) throws DocumentException, IOException {
if (!reader.isOpenedWithFullPermissions())
throw new BadPasswordException(MessageLocalization.getComposedMessage("pdfreader.not.opened.with.owner.password"));
openDoc();
if (readers2intrefs.containsKey(reader)) {
reader = new PdfReader(reader);
}
else {
if (reader.isTampered())
throw new DocumentException(MessageLocalization.getComposedMessage("the.document.was.reused"));
reader.consolidateNamedDestinations();
reader.setTampered(true);
}
reader.shuffleSubsetNames();
readers2intrefs.put(reader, new IntHashtable());
readers.add(reader);
int len = reader.getNumberOfPages();
IntHashtable refs = new IntHashtable();
for (int p = 1; p <= len; ++p) {
refs.put(reader.getPageOrigRef(p).getNumber(), 1);
reader.releasePage(p);
}
pages2intrefs.put(reader, refs);
visited.put(reader, new IntHashtable());
AcroFields acro = reader.getAcroFields();
// when a document with NeedAppearances is encountered, the flag is set
// in the resulting document.
boolean needapp = !acro.isGenerateAppearances();
if (needapp)
needAppearances = true;
fields.add(acro);
updateCalculationOrder(reader);
}
private static String getCOName(PdfReader reader, PRIndirectReference ref) {
String name = "";
while (ref != null) {
PdfObject obj = PdfReader.getPdfObject(ref);
if (obj == null || obj.type() != PdfObject.DICTIONARY)
break;
PdfDictionary dic = (PdfDictionary)obj;
PdfString t = dic.getAsString(PdfName.T);
if (t != null) {
name = t.toUnicodeString()+ "." + name;
}
ref = (PRIndirectReference)dic.get(PdfName.PARENT);
}
if (name.endsWith("."))
name = name.substring(0, name.length() - 1);
return name;
}
/**
* @since 2.1.5; before 2.1.5 the method was private
*/
protected void updateCalculationOrder(PdfReader reader) {
PdfDictionary catalog = reader.getCatalog();
PdfDictionary acro = catalog.getAsDict(PdfName.ACROFORM);
if (acro == null)
return;
PdfArray co = acro.getAsArray(PdfName.CO);
if (co == null || co.size() == 0)
return;
AcroFields af = reader.getAcroFields();
for (int k = 0; k < co.size(); ++k) {
PdfObject obj = co.getPdfObject(k);
if (obj == null || !obj.isIndirect())
continue;
String name = getCOName(reader, (PRIndirectReference)obj);
if (af.getFieldItem(name) == null)
continue;
name = "." + name;
if (calculationOrder.contains(name))
continue;
calculationOrder.add(name);
}
}
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 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 void adjustTabOrder(PdfArray annots, PdfIndirectReference ind, PdfNumber nn) {
int v = nn.intValue();
ArrayList t = tabOrder.get(annots);
if (t == null) {
t = new ArrayList();
int size = annots.size() - 1;
for (int k = 0; k < size; ++k) {
t.add(zero);
}
t.add(Integer.valueOf(v));
tabOrder.put(annots, t);
annots.add(ind);
}
else {
int size = t.size() - 1;
for (int k = size; k >= 0; --k) {
if (t.get(k).intValue() <= v) {
t.add(k + 1, Integer.valueOf(v));
annots.add(k + 1, ind);
size = -2;
break;
}
}
if (size != -2) {
t.add(0, Integer.valueOf(v));
annots.add(0, ind);
}
}
}
@SuppressWarnings("unchecked")
protected PdfArray branchForm(HashMap level, PdfIndirectReference parent, String fname) throws IOException {
PdfArray arr = new PdfArray();
for (Map.Entry entry: level.entrySet()) {
String name = entry.getKey();
Object obj = entry.getValue();
PdfIndirectReference ind = getPdfIndirectReference();
PdfDictionary dic = new PdfDictionary();
if (parent != null)
dic.put(PdfName.PARENT, parent);
dic.put(PdfName.T, new PdfString(name, PdfObject.TEXT_UNICODE));
String fname2 = fname + "." + name;
int coidx = calculationOrder.indexOf(fname2);
if (coidx >= 0)
calculationOrderRefs.set(coidx, ind);
if (obj instanceof HashMap) {
dic.put(PdfName.KIDS, branchForm((HashMap)obj, ind, fname2));
arr.add(ind);
addToBody(dic, ind);
}
else {
ArrayList list = (ArrayList)obj;
dic.mergeDifferent((PdfDictionary)list.get(0));
if (list.size() == 3) {
dic.mergeDifferent((PdfDictionary)list.get(2));
int page = ((Integer)list.get(1)).intValue();
PdfDictionary pageDic = pageDics.get(page - 1);
PdfArray annots = pageDic.getAsArray(PdfName.ANNOTS);
if (annots == null) {
annots = new PdfArray();
pageDic.put(PdfName.ANNOTS, annots);
}
PdfNumber nn = (PdfNumber)dic.get(iTextTag);
dic.remove(iTextTag);
adjustTabOrder(annots, ind, nn);
}
else {
PdfDictionary field = (PdfDictionary)list.get(0);
PdfName v = field.getAsName(PdfName.V);
PdfArray kids = new PdfArray();
for (int k = 1; k < list.size(); k += 2) {
int page = ((Integer)list.get(k)).intValue();
PdfDictionary pageDic = pageDics.get(page - 1);
PdfArray annots = pageDic.getAsArray(PdfName.ANNOTS);
if (annots == null) {
annots = new PdfArray();
pageDic.put(PdfName.ANNOTS, annots);
}
PdfDictionary widget = new PdfDictionary();
widget.merge((PdfDictionary)list.get(k + 1));
widget.put(PdfName.PARENT, ind);
PdfNumber nn = (PdfNumber)widget.get(iTextTag);
widget.remove(iTextTag);
if (PdfCopy.isCheckButton(field)) {
PdfName as = widget.getAsName(PdfName.AS);
if (v != null && as != null)
widget.put(PdfName.AS, v);
} else if (PdfCopy.isRadioButton(field)) {
PdfName as = widget.getAsName(PdfName.AS);
if (v != null && as != null && !as.equals(getOffStateName(widget))) {
if (!mergedRadioButtons.contains(list)) {
mergedRadioButtons.add(list);
widget.put(PdfName.AS, v);
} else {
widget.put(PdfName.AS, getOffStateName(widget));
}
}
}
PdfIndirectReference wref = addToBody(widget).getIndirectReference();
adjustTabOrder(annots, wref, nn);
kids.add(wref);
propagate(widget, null, false);
}
dic.put(PdfName.KIDS, kids);
}
arr.add(ind);
addToBody(dic, ind);
propagate(dic, null, false);
}
}
return arr;
}
protected PdfName getOffStateName(PdfDictionary widget) {
return PdfName.Off;
}
protected void createAcroForms() throws IOException {
if (fieldTree.isEmpty())
return;
form = new PdfDictionary();
form.put(PdfName.DR, resources);
propagate(resources, null, false);
if (needAppearances) {
form.put(PdfName.NEEDAPPEARANCES, PdfBoolean.PDFTRUE);
}
form.put(PdfName.DA, new PdfString("/Helv 0 Tf 0 g "));
tabOrder = new HashMap>();
calculationOrderRefs = new ArrayList(calculationOrder);
form.put(PdfName.FIELDS, branchForm(fieldTree, null, ""));
if (hasSignature)
form.put(PdfName.SIGFLAGS, new PdfNumber(3));
PdfArray co = new PdfArray();
for (int k = 0; k < calculationOrderRefs.size(); ++k) {
Object obj = calculationOrderRefs.get(k);
if (obj instanceof PdfIndirectReference)
co.add((PdfIndirectReference)obj);
}
if (co.size() > 0)
form.put(PdfName.CO, co);
}
@Override
public void close() {
if (closing) {
super.close();
return;
}
closing = true;
try {
closeIt();
}
catch (Exception e) {
throw new ExceptionConverter(e);
}
}
/**
* 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.Entryentry: 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();
}
void addPageOffsetToField(Map fd, int pageOffset) {
if (pageOffset == 0)
return;
for (AcroFields.Item item: fd.values()) {
for (int k = 0; k < item.size(); ++k) {
int p = item.getPage(k).intValue();
item.forcePage(k, p + pageOffset);
}
}
}
void createWidgets(ArrayList 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);
}
}
@SuppressWarnings("unchecked")
void mergeField(String name, AcroFields.Item item) {
HashMap 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)obj;
continue;
}
else if (obj instanceof HashMap)
map = (HashMap)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 list = new ArrayList();
list.add(field);
createWidgets(list, item);
map.put(s, list);
}
else {
ArrayList list = (ArrayList)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;
}
}
}
void mergeWithMaster(Map fd) {
for (Map.Entry entry: fd.entrySet()) {
String name = entry.getKey();
mergeField(name, entry.getValue());
}
}
void mergeFields() {
int pageOffset = 0;
for (int k = 0; k < fields.size(); ++k) {
Map fd = fields.get(k).getFields();
addPageOffsetToField(fd, pageOffset);
mergeWithMaster(fd);
pageOffset += readers.get(k).getNumberOfPages();
}
}
@Override
public PdfIndirectReference getPageReference(int page) {
return pageRefs.get(page - 1);
}
@Override
protected PdfDictionary getCatalog(PdfIndirectReference rootObj) {
try {
PdfDictionary cat = pdf.getCatalog(rootObj);
if (form != null) {
PdfIndirectReference ref = addToBody(form).getIndirectReference();
cat.put(PdfName.ACROFORM, ref);
}
return cat;
}
catch (IOException e) {
throw new ExceptionConverter(e);
}
}
protected PdfIndirectReference getNewReference(PRIndirectReference ref) {
return new PdfIndirectReference(0, getNewObjectNumber(ref.getReader(), ref.getNumber(), 0));
}
@Override
protected int getNewObjectNumber(PdfReader reader, int number, int generation) {
IntHashtable refs = readers2intrefs.get(reader);
int n = refs.get(number);
if (n == 0) {
n = getIndirectReferenceNumber();
refs.put(number, n);
}
return n;
}
/**
* Sets a reference to "visited" in the copy process.
* @param ref the reference that needs to be set to "visited"
* @return true if the reference was set to visited
*/
protected boolean setVisited(PRIndirectReference ref) {
IntHashtable refs = visited.get(ref.getReader());
if (refs != null)
return refs.put(ref.getNumber(), 1) != 0;
else
return false;
}
/**
* Checks if a reference has already been "visited" in the copy process.
* @param ref the reference that needs to be checked
* @return true if the reference was already visited
*/
protected boolean isVisited(PRIndirectReference ref) {
IntHashtable refs = visited.get(ref.getReader());
if (refs != null)
return refs.containsKey(ref.getNumber());
else
return false;
}
protected boolean isVisited(PdfReader reader, int number, int generation) {
IntHashtable refs = readers2intrefs.get(reader);
return refs.containsKey(number);
}
/**
* Checks if a reference refers to a page object.
* @param ref the reference that needs to be checked
* @return true is the reference refers to a page object.
*/
protected boolean isPage(PRIndirectReference ref) {
IntHashtable refs = pages2intrefs.get(ref.getReader());
if (refs != null)
return refs.containsKey(ref.getNumber());
else
return false;
}
@Override
RandomAccessFileOrArray getReaderFile(PdfReader reader) {
return file;
}
public void openDoc() {
if (!nd.isOpen())
nd.open();
}
protected static final HashMap widgetKeys = new HashMap();
protected static final HashMap fieldKeys = new HashMap();
static {
Integer one = Integer.valueOf(1);
widgetKeys.put(PdfName.SUBTYPE, one);
widgetKeys.put(PdfName.CONTENTS, one);
widgetKeys.put(PdfName.RECT, one);
widgetKeys.put(PdfName.NM, one);
widgetKeys.put(PdfName.M, one);
widgetKeys.put(PdfName.F, one);
widgetKeys.put(PdfName.BS, one);
widgetKeys.put(PdfName.BORDER, one);
widgetKeys.put(PdfName.AP, one);
widgetKeys.put(PdfName.AS, one);
widgetKeys.put(PdfName.C, one);
widgetKeys.put(PdfName.A, one);
widgetKeys.put(PdfName.STRUCTPARENT, one);
widgetKeys.put(PdfName.OC, one);
widgetKeys.put(PdfName.H, one);
widgetKeys.put(PdfName.MK, one);
widgetKeys.put(PdfName.DA, one);
widgetKeys.put(PdfName.Q, one);
widgetKeys.put(PdfName.P, one);
fieldKeys.put(PdfName.AA, one);
fieldKeys.put(PdfName.FT, one);
fieldKeys.put(PdfName.TU, one);
fieldKeys.put(PdfName.TM, one);
fieldKeys.put(PdfName.FF, one);
fieldKeys.put(PdfName.V, one);
fieldKeys.put(PdfName.DV, one);
fieldKeys.put(PdfName.DS, one);
fieldKeys.put(PdfName.RV, one);
fieldKeys.put(PdfName.OPT, one);
fieldKeys.put(PdfName.MAXLEN, one);
fieldKeys.put(PdfName.TI, one);
fieldKeys.put(PdfName.I, one);
fieldKeys.put(PdfName.LOCK, one);
fieldKeys.put(PdfName.SV, one);
}
}
