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/*
* $Id: XfaForm.java 3961 2009-06-09 10:06:10Z blowagie $
*
* Copyright 2006 Paulo Soares
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (the "License"); you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* The Original Code is 'iText, a free JAVA-PDF library'.
*
* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
* provisions of LGPL are applicable instead of those above. If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or any later version.
*
* This library 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 Library general Public License for more
* details.
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* http://www.lowagie.com/iText/
*/
package com.aowagie.text.pdf;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.Collection;
import java.util.EmptyStackException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Node;
import org.xml.sax.EntityResolver;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import com.aowagie.text.xml.XmlDomWriter;
/**
* Processes XFA forms.
* @author Paulo Soares ([email protected])
*/
public class XfaForm {
private Xml2SomTemplate templateSom;
private Node templateNode;
private Xml2SomDatasets datasetsSom;
private Node datasetsNode;
private AcroFieldsSearch acroFieldsSom;
private PdfReader reader;
private boolean xfaPresent;
private org.w3c.dom.Document domDocument;
private boolean changed;
public static final String XFA_DATA_SCHEMA = "http://www.xfa.org/schema/xfa-data/1.0/";
private static DocumentBuilderFactory SECURE_FACTORY = null;
private static final Logger LOGGER = Logger.getLogger(XfaForm.class.getName());
/**
* An empty constructor to build on.
*/
public XfaForm() {
}
/**
* Return the XFA Object, could be an array, could be a Stream.
* Returns null f no XFA Object is present.
* @param reader a PdfReader instance
* @return the XFA object
* @since 2.1.3
*/
public static PdfObject getXfaObject(final PdfReader reader) {
final PdfDictionary af = (PdfDictionary)PdfReader.getPdfObjectRelease(reader.getCatalog().get(PdfName.ACROFORM));
if (af == null) {
return null;
}
return PdfReader.getPdfObjectRelease(af.get(PdfName.XFA));
}
/**
* A constructor from a PdfReader. It basically does everything
* from finding the XFA stream to the XML parsing.
* @param reader the reader
* @throws java.io.IOException on error
* @throws javax.xml.parsers.ParserConfigurationException on error
* @throws org.xml.sax.SAXException on error
*/
public XfaForm(final PdfReader reader) throws IOException, ParserConfigurationException, SAXException {
this.reader = reader;
final PdfObject xfa = getXfaObject(reader);
if (xfa == null) {
this.xfaPresent = false;
return;
}
this.xfaPresent = true;
final ByteArrayOutputStream bout = new ByteArrayOutputStream();
if (xfa.isArray()) {
final PdfArray ar = (PdfArray)xfa;
for (int k = 1; k < ar.size(); k += 2) {
final PdfObject ob = ar.getDirectObject(k);
if (ob instanceof PRStream) {
final byte[] b = PdfReader.getStreamBytes((PRStream)ob);
bout.write(b);
}
}
}
else if (xfa instanceof PRStream) {
final byte[] b = PdfReader.getStreamBytes((PRStream)xfa);
bout.write(b);
}
bout.close();
final DocumentBuilderFactory fact = getSecureDocumentFactory();
fact.setNamespaceAware(true);
final DocumentBuilder db = fact.newDocumentBuilder();
db.setEntityResolver(new SafeEmptyEntityResolver());
this.domDocument = db.parse(new ByteArrayInputStream(bout.toByteArray()));
extractNodes();
}
/**
* Extracts the nodes from the domDocument.
* @since 2.1.5
*/
private void extractNodes() {
Node n = this.domDocument.getFirstChild();
while (n.getChildNodes().getLength() == 0) {
n = n.getNextSibling();
}
n = n.getFirstChild();
while (n != null) {
if (n.getNodeType() == Node.ELEMENT_NODE) {
final String s = n.getLocalName();
if (s.equals("template")) {
this.templateNode = n;
this.templateSom = new Xml2SomTemplate(n);
}
else if (s.equals("datasets")) {
this.datasetsNode = n;
this.datasetsSom = new Xml2SomDatasets(n.getFirstChild());
}
}
n = n.getNextSibling();
}
}
/**
* Sets the XFA key from a byte array. The old XFA is erased.
* @param form the data
* @param reader the reader
* @param writer the writer
* @throws java.io.IOException on error
*/
public static void setXfa(final XfaForm form, final PdfReader reader, final PdfWriter writer) throws IOException {
final PdfDictionary af = (PdfDictionary)PdfReader.getPdfObjectRelease(reader.getCatalog().get(PdfName.ACROFORM));
if (af == null) {
return;
}
final PdfObject xfa = getXfaObject(reader);
if (xfa.isArray()) {
final PdfArray ar = (PdfArray)xfa;
int t = -1;
int d = -1;
for (int k = 0; k < ar.size(); k += 2) {
final PdfString s = ar.getAsString(k);
if ("template".equals(s.toString())) {
t = k + 1;
}
if ("datasets".equals(s.toString())) {
d = k + 1;
}
}
if (t > -1 && d > -1) {
reader.killXref(ar.getAsIndirectObject(t));
reader.killXref(ar.getAsIndirectObject(d));
final PdfStream tStream = new PdfStream(serializeDoc(form.templateNode));
tStream.flateCompress(writer.getCompressionLevel());
ar.set(t, writer.addToBody(tStream).getIndirectReference());
final PdfStream dStream = new PdfStream(serializeDoc(form.datasetsNode));
dStream.flateCompress(writer.getCompressionLevel());
ar.set(d, writer.addToBody(dStream).getIndirectReference());
af.put(PdfName.XFA, new PdfArray(ar));
return;
}
}
reader.killXref(af.get(PdfName.XFA));
final PdfStream str = new PdfStream(serializeDoc(form.domDocument));
str.flateCompress(writer.getCompressionLevel());
final PdfIndirectReference ref = writer.addToBody(str).getIndirectReference();
af.put(PdfName.XFA, ref);
}
/**
* Sets the XFA key from the instance data. The old XFA is erased.
* @param writer the writer
* @throws java.io.IOException on error
*/
public void setXfa(final PdfWriter writer) throws IOException {
setXfa(this, this.reader, writer);
}
/**
* Serializes a XML document to a byte array.
* @param n the XML document
* @throws java.io.IOException on error
* @return the serialized XML document
*/
public static byte[] serializeDoc(final Node n) throws IOException {
final XmlDomWriter xw = new XmlDomWriter();
final ByteArrayOutputStream fout = new ByteArrayOutputStream();
xw.setOutput(fout, null);
xw.setCanonical(false);
xw.write(n);
fout.close();
return fout.toByteArray();
}
/**
* Returns true if it is a XFA form.
* @return true if it is a XFA form
*/
public boolean isXfaPresent() {
return this.xfaPresent;
}
/**
* Gets the top level DOM document.
* @return the top level DOM document
*/
public org.w3c.dom.Document getDomDocument() {
return this.domDocument;
}
/**
* Finds the complete field name contained in the "classic" forms from a partial
* name.
* @param name the complete or partial name
* @param af the fields
* @return the complete name or null if not found
*/
public String findFieldName(final String name, final AcroFields af) {
final HashMap items = af.getFields();
if (items.containsKey(name)) {
return name;
}
if (this.acroFieldsSom == null) {
if (items.isEmpty() && this.xfaPresent) {
this.acroFieldsSom = new AcroFieldsSearch(this.datasetsSom.getName2Node().keySet());
} else {
this.acroFieldsSom = new AcroFieldsSearch(items.keySet());
}
}
if (this.acroFieldsSom.getAcroShort2LongName().containsKey(name)) {
return (String)this.acroFieldsSom.getAcroShort2LongName().get(name);
}
return this.acroFieldsSom.inverseSearchGlobal(Xml2Som.splitParts(name));
}
/**
* Finds the complete SOM name contained in the datasets section from a
* possibly partial name.
* @param name the complete or partial name
* @return the complete name or null if not found
*/
public String findDatasetsName(final String name) {
if (this.datasetsSom.getName2Node().containsKey(name)) {
return name;
}
return this.datasetsSom.inverseSearchGlobal(Xml2Som.splitParts(name));
}
/**
* Finds the Node contained in the datasets section from a
* possibly partial name.
* @param name the complete or partial name
* @return the Node or null if not found
*/
public Node findDatasetsNode(String name) {
if (name == null) {
return null;
}
name = findDatasetsName(name);
if (name == null) {
return null;
}
return (Node)this.datasetsSom.getName2Node().get(name);
}
/**
* Gets all the text contained in the child nodes of this node.
* @param n the Node
* @return the text found or "" if no text was found
*/
public static String getNodeText(final Node n) {
if (n == null) {
return "";
}
return getNodeText(n, "");
}
private static String getNodeText(final Node n, String name) {
Node n2 = n.getFirstChild();
while (n2 != null) {
if (n2.getNodeType() == Node.ELEMENT_NODE) {
name = getNodeText(n2, name);
}
else if (n2.getNodeType() == Node.TEXT_NODE) {
name += n2.getNodeValue();
}
n2 = n2.getNextSibling();
}
return name;
}
/**
* Sets the text of this node. All the child's node are deleted and a new
* child text node is created.
* @param n the Node to add the text to
* @param text the text to add
*/
public void setNodeText(final Node n, final String text) {
if (n == null) {
return;
}
Node nc = null;
while ((nc = n.getFirstChild()) != null) {
n.removeChild(nc);
}
if (n.getAttributes().getNamedItemNS(XFA_DATA_SCHEMA, "dataNode") != null) {
n.getAttributes().removeNamedItemNS(XFA_DATA_SCHEMA, "dataNode");
}
n.appendChild(this.domDocument.createTextNode(text));
this.changed = true;
}
/**
* Sets the XFA form flag signaling that this is a valid XFA form.
* @param xfaPresent the XFA form flag signaling that this is a valid XFA form
*/
public void setXfaPresent(final boolean xfaPresent) {
this.xfaPresent = xfaPresent;
}
/**
* Sets the top DOM document.
* @param domDocument the top DOM document
*/
public void setDomDocument(final org.w3c.dom.Document domDocument) {
this.domDocument = domDocument;
extractNodes();
}
/**
* Gets the PdfReader used by this instance.
* @return the PdfReader used by this instance
*/
public PdfReader getReader() {
return this.reader;
}
/**
* Sets the PdfReader to be used by this instance.
* @param reader the PdfReader to be used by this instance
*/
public void setReader(final PdfReader reader) {
this.reader = reader;
}
/**
* Checks if this XFA form was changed.
* @return true if this XFA form was changed
*/
public boolean isChanged() {
return this.changed;
}
/**
* Sets the changed status of this XFA instance.
* @param changed the changed status of this XFA instance
*/
public void setChanged(final boolean changed) {
this.changed = changed;
}
private synchronized static DocumentBuilderFactory getSecureDocumentFactory() {
if (SECURE_FACTORY != null) {
return SECURE_FACTORY;
}
SECURE_FACTORY = DocumentBuilderFactory.newInstance();
// Configuramos un procesado seguro
try {
SECURE_FACTORY.setFeature(javax.xml.XMLConstants.FEATURE_SECURE_PROCESSING, Boolean.TRUE.booleanValue());
}
catch (final Exception e) {
LOGGER.log(Level.WARNING, "No se pudo configurar el procesador seguro: " + e); //$NON-NLS-1$
}
// Los siguientes atributos deberia establececerlos automaticamente la implementacion de
// la biblioteca al habilitar la caracteristica anterior. Por si acaso, los establecemos
// expresamente
final String[] securityProperties = new String[] {
javax.xml.XMLConstants.ACCESS_EXTERNAL_DTD,
javax.xml.XMLConstants.ACCESS_EXTERNAL_SCHEMA,
javax.xml.XMLConstants.ACCESS_EXTERNAL_STYLESHEET
};
for (final String securityProperty : securityProperties) {
try {
SECURE_FACTORY.setAttribute(securityProperty, ""); //$NON-NLS-1$
}
catch (final Exception e) {
// Ponemos las trazas en debug ya que estas propiedades son adicionales
// a la activacion de el procesado seguro
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.log(Level.FINE, "No se ha podido establecer una propiedad de seguridad '" + securityProperty + "' en la factoria XML: " + e); //$NON-NLS-1$ //$NON-NLS-2$
}
}
}
SECURE_FACTORY.setValidating(false);
return SECURE_FACTORY;
}
/**
* A structure to store each part of a SOM name and link it to the next part
* beginning from the lower hierarchy.
*/
public static class InverseStore {
protected ArrayList part = new ArrayList();
protected ArrayList follow = new ArrayList();
/**
* Gets the full name by traversing the hierarchy using only the
* index 0.
* @return the full name
*/
public String getDefaultName() {
InverseStore store = this;
while (true) {
final Object obj = store.follow.get(0);
if (obj instanceof String) {
return (String)obj;
}
store = (InverseStore)obj;
}
}
/**
* Search the current node for a similar name. A similar name starts
* with the same name but has a different index. For example, "detail[3]"
* is similar to "detail[9]". The main use is to discard names that
* correspond to out of bounds records.
* @param name the name to search
* @return true if a similitude was found
*/
public boolean isSimilar(String name) {
final int idx = name.indexOf('[');
name = name.substring(0, idx + 1);
for (int k = 0; k < this.part.size(); ++k) {
if (((String)this.part.get(k)).startsWith(name)) {
return true;
}
}
return false;
}
}
/**
* Another stack implementation. The main use is to facilitate
* the porting to other languages.
*/
public static class Stack2 extends ArrayList {
private static final long serialVersionUID = -7451476576174095212L;
/**
* Looks at the object at the top of this stack without removing it from the stack.
* @return the object at the top of this stack
*/
public Object peek() {
if (size() == 0) {
throw new EmptyStackException();
}
return get(size() - 1);
}
/**
* Removes the object at the top of this stack and returns that object as the value of this function.
* @return the object at the top of this stack
*/
public Object pop() {
if (size() == 0) {
throw new EmptyStackException();
}
final Object ret = get(size() - 1);
remove(size() - 1);
return ret;
}
/**
* Pushes an item onto the top of this stack.
* @param item the item to be pushed onto this stack
* @return the item argument
*/
public Object push(final Object item) {
add(item);
return item;
}
/**
* Tests if this stack is empty.
* @return true if and only if this stack contains no items; false otherwise
*/
public boolean empty() {
return size() == 0;
}
}
/**
* A class for some basic SOM processing.
*/
public static class Xml2Som {
/**
* The order the names appear in the XML, depth first.
*/
protected ArrayList order;
/**
* The mapping of full names to nodes.
*/
protected HashMap name2Node;
/**
* The data to do a search from the bottom hierarchy.
*/
protected HashMap inverseSearch;
/**
* A stack to be used when parsing.
*/
protected Stack2 stack;
/**
* A temporary store for the repetition count.
*/
protected int anform;
/**
* Escapes a SOM string fragment replacing "." with "\.".
* @param s the unescaped string
* @return the escaped string
*/
public static String escapeSom(final String s) {
int idx = s.indexOf('.');
if (idx < 0) {
return s;
}
final StringBuffer sb = new StringBuffer();
int last = 0;
while (idx >= 0) {
sb.append(s.substring(last, idx));
sb.append('\\');
last = idx;
idx = s.indexOf('.', idx + 1);
}
sb.append(s.substring(last));
return sb.toString();
}
/**
* Unescapes a SOM string fragment replacing "\." with ".".
* @param s the escaped string
* @return the unescaped string
*/
public static String unescapeSom(final String s) {
int idx = s.indexOf('\\');
if (idx < 0) {
return s;
}
final StringBuffer sb = new StringBuffer();
int last = 0;
while (idx >= 0) {
sb.append(s.substring(last, idx));
last = idx + 1;
idx = s.indexOf('\\', idx + 1);
}
sb.append(s.substring(last));
return sb.toString();
}
/**
* Outputs the stack as the sequence of elements separated
* by '.'.
* @return the stack as the sequence of elements separated by '.'
*/
protected String printStack() {
if (this.stack.empty()) {
return "";
}
final StringBuffer s = new StringBuffer();
for (int k = 0; k < this.stack.size(); ++k) {
s.append('.').append((String)this.stack.get(k));
}
return s.substring(1);
}
/**
* Gets the name with the #subform removed.
* @param s the long name
* @return the short name
*/
public static String getShortName(final String s) {
int idx = s.indexOf(".#subform[");
if (idx < 0) {
return s;
}
int last = 0;
final StringBuffer sb = new StringBuffer();
while (idx >= 0) {
sb.append(s.substring(last, idx));
idx = s.indexOf("]", idx + 10);
if (idx < 0) {
return sb.toString();
}
last = idx + 1;
idx = s.indexOf(".#subform[", last);
}
sb.append(s.substring(last));
return sb.toString();
}
/**
* Adds a SOM name to the search node chain.
* @param unstack the SOM name
*/
public void inverseSearchAdd(final String unstack) {
inverseSearchAdd(this.inverseSearch, this.stack, unstack);
}
/**
* Adds a SOM name to the search node chain.
* @param inverseSearch the start point
* @param stack the stack with the separated SOM parts
* @param unstack the full name
*/
public static void inverseSearchAdd(final HashMap inverseSearch, final Stack2 stack, final String unstack) {
String last = (String)stack.peek();
InverseStore store = (InverseStore)inverseSearch.get(last);
if (store == null) {
store = new InverseStore();
inverseSearch.put(last, store);
}
for (int k = stack.size() - 2; k >= 0; --k) {
last = (String)stack.get(k);
InverseStore store2;
final int idx = store.part.indexOf(last);
if (idx < 0) {
store.part.add(last);
store2 = new InverseStore();
store.follow.add(store2);
} else {
store2 = (InverseStore)store.follow.get(idx);
}
store = store2;
}
store.part.add("");
store.follow.add(unstack);
}
/**
* Searches the SOM hierarchy from the bottom.
* @param parts the SOM parts
* @return the full name or null if not found
*/
public String inverseSearchGlobal(final ArrayList parts) {
if (parts.isEmpty()) {
return null;
}
InverseStore store = (InverseStore)this.inverseSearch.get(parts.get(parts.size() - 1));
if (store == null) {
return null;
}
for (int k = parts.size() - 2; k >= 0; --k) {
final String part = (String)parts.get(k);
final int idx = store.part.indexOf(part);
if (idx < 0) {
if (store.isSimilar(part)) {
return null;
}
return store.getDefaultName();
}
store = (InverseStore)store.follow.get(idx);
}
return store.getDefaultName();
}
/**
* Splits a SOM name in the individual parts.
* @param name the full SOM name
* @return the split name
*/
public static Stack2 splitParts(String name) {
while (name.startsWith(".")) {
name = name.substring(1);
}
final Stack2 parts = new Stack2();
int last = 0;
int pos = 0;
String part;
while (true) {
pos = last;
while (true) {
pos = name.indexOf('.', pos);
if (pos < 0) {
break;
}
if (name.charAt(pos - 1) == '\\') {
++pos;
} else {
break;
}
}
if (pos < 0) {
break;
}
part = name.substring(last, pos);
if (!part.endsWith("]")) {
part += "[0]";
}
parts.add(part);
last = pos + 1;
}
part = name.substring(last);
if (!part.endsWith("]")) {
part += "[0]";
}
parts.add(part);
return parts;
}
/**
* Gets the order the names appear in the XML, depth first.
* @return the order the names appear in the XML, depth first
*/
public ArrayList getOrder() {
return this.order;
}
/**
* Sets the order the names appear in the XML, depth first
* @param order the order the names appear in the XML, depth first
*/
public void setOrder(final ArrayList order) {
this.order = order;
}
/**
* Gets the mapping of full names to nodes.
* @return the mapping of full names to nodes
*/
public HashMap getName2Node() {
return this.name2Node;
}
/**
* Sets the mapping of full names to nodes.
* @param name2Node the mapping of full names to nodes
*/
public void setName2Node(final HashMap name2Node) {
this.name2Node = name2Node;
}
/**
* Gets the data to do a search from the bottom hierarchy.
* @return the data to do a search from the bottom hierarchy
*/
public HashMap getInverseSearch() {
return this.inverseSearch;
}
/**
* Sets the data to do a search from the bottom hierarchy.
* @param inverseSearch the data to do a search from the bottom hierarchy
*/
public void setInverseSearch(final HashMap inverseSearch) {
this.inverseSearch = inverseSearch;
}
}
/**
* Processes the datasets section in the XFA form.
*/
public static class Xml2SomDatasets extends Xml2Som {
/**
* Creates a new instance from the datasets node. This expects
* not the datasets but the data node that comes below.
* @param n the datasets node
*/
public Xml2SomDatasets(final Node n) {
this.order = new ArrayList();
this.name2Node = new HashMap();
this.stack = new Stack2();
this.anform = 0;
this.inverseSearch = new HashMap();
processDatasetsInternal(n);
}
/**
* Inserts a new Node that will match the short name.
* @param n the datasets top Node
* @param shortName the short name
* @return the new Node of the inserted name
*/
public Node insertNode(Node n, final String shortName) {
final Stack2 stack = splitParts(shortName);
final org.w3c.dom.Document doc = n.getOwnerDocument();
Node n2 = null;
n = n.getFirstChild();
for (int k = 0; k < stack.size(); ++k) {
final String part = (String)stack.get(k);
int idx = part.lastIndexOf('[');
final String name = part.substring(0, idx);
idx = Integer.parseInt(part.substring(idx + 1, part.length() - 1));
int found = -1;
for (n2 = n.getFirstChild(); n2 != null; n2 = n2.getNextSibling()) {
if (n2.getNodeType() == Node.ELEMENT_NODE) {
final String s = escapeSom(n2.getLocalName());
if (s.equals(name)) {
++found;
if (found == idx) {
break;
}
}
}
}
for (; found < idx; ++found) {
n2 = doc.createElementNS(null, name);
n2 = n.appendChild(n2);
final Node attr = doc.createAttributeNS(XFA_DATA_SCHEMA, "dataNode");
attr.setNodeValue("dataGroup");
n2.getAttributes().setNamedItemNS(attr);
}
n = n2;
}
inverseSearchAdd(this.inverseSearch, stack, shortName);
this.name2Node.put(shortName, n2);
this.order.add(shortName);
return n2;
}
private static boolean hasChildren(final Node n) {
final Node dataNodeN = n.getAttributes().getNamedItemNS(XFA_DATA_SCHEMA, "dataNode");
if (dataNodeN != null) {
final String dataNode = dataNodeN.getNodeValue();
if ("dataGroup".equals(dataNode)) {
return true;
} else if ("dataValue".equals(dataNode)) {
return false;
}
}
if (!n.hasChildNodes()) {
return false;
}
Node n2 = n.getFirstChild();
while (n2 != null) {
if (n2.getNodeType() == Node.ELEMENT_NODE) {
return true;
}
n2 = n2.getNextSibling();
}
return false;
}
private void processDatasetsInternal(final Node n) {
final HashMap ss = new HashMap();
Node n2 = n.getFirstChild();
while (n2 != null) {
if (n2.getNodeType() == Node.ELEMENT_NODE) {
final String s = escapeSom(n2.getLocalName());
Integer i = (Integer)ss.get(s);
if (i == null) {
i = new Integer(0);
} else {
i = new Integer(i.intValue() + 1);
}
ss.put(s, i);
if (hasChildren(n2)) {
this.stack.push(s + "[" + i.toString() + "]");
processDatasetsInternal(n2);
this.stack.pop();
}
else {
this.stack.push(s + "[" + i.toString() + "]");
final String unstack = printStack();
this.order.add(unstack);
inverseSearchAdd(unstack);
this.name2Node.put(unstack, n2);
this.stack.pop();
}
}
n2 = n2.getNextSibling();
}
}
}
/**
* A class to process "classic" fields.
*/
public static class AcroFieldsSearch extends Xml2Som {
private HashMap acroShort2LongName;
/**
* Creates a new instance from a Collection with the full names.
* @param items the Collection
*/
public AcroFieldsSearch(final Collection items) {
this.inverseSearch = new HashMap();
this.acroShort2LongName = new HashMap();
for (final Iterator it = items.iterator(); it.hasNext();) {
final String itemName = (String)it.next();
final String itemShort = getShortName(itemName);
this.acroShort2LongName.put(itemShort, itemName);
inverseSearchAdd(this.inverseSearch, splitParts(itemShort), itemName);
}
}
/**
* Gets the mapping from short names to long names. A long
* name may contain the #subform name part.
* @return the mapping from short names to long names
*/
public HashMap getAcroShort2LongName() {
return this.acroShort2LongName;
}
/**
* Sets the mapping from short names to long names. A long
* name may contain the #subform name part.
* @param acroShort2LongName the mapping from short names to long names
*/
public void setAcroShort2LongName(final HashMap acroShort2LongName) {
this.acroShort2LongName = acroShort2LongName;
}
}
/**
* Processes the template section in the XFA form.
*/
public static class Xml2SomTemplate extends Xml2Som {
private boolean dynamicForm;
private int templateLevel;
/**
* Creates a new instance from the datasets node.
* @param n the template node
*/
public Xml2SomTemplate(final Node n) {
this.order = new ArrayList();
this.name2Node = new HashMap();
this.stack = new Stack2();
this.anform = 0;
this.templateLevel = 0;
this.inverseSearch = new HashMap();
processTemplate(n, null);
}
/**
* Gets the field type as described in the template section of the XFA.
* @param s the exact template name
* @return the field type or null if not found
*/
public String getFieldType(final String s) {
final Node n = (Node)this.name2Node.get(s);
if (n == null) {
return null;
}
if (n.getLocalName().equals("exclGroup")) {
return "exclGroup";
}
Node ui = n.getFirstChild();
while (ui != null) {
if (ui.getNodeType() == Node.ELEMENT_NODE && ui.getLocalName().equals("ui")) {
break;
}
ui = ui.getNextSibling();
}
if (ui == null) {
return null;
}
Node type = ui.getFirstChild();
while (type != null) {
if (type.getNodeType() == Node.ELEMENT_NODE && !(type.getLocalName().equals("extras") && type.getLocalName().equals("picture"))) {
return type.getLocalName();
}
type = type.getNextSibling();
}
return null;
}
private void processTemplate(final Node n, HashMap ff) {
if (ff == null) {
ff = new HashMap();
}
final HashMap ss = new HashMap();
Node n2 = n.getFirstChild();
while (n2 != null) {
if (n2.getNodeType() == Node.ELEMENT_NODE) {
final String s = n2.getLocalName();
if (s.equals("subform")) {
final Node name = n2.getAttributes().getNamedItem("name");
String nn = "#subform";
boolean annon = true;
if (name != null) {
nn = escapeSom(name.getNodeValue());
annon = false;
}
Integer i;
if (annon) {
i = new Integer(this.anform);
++this.anform;
}
else {
i = (Integer)ss.get(nn);
if (i == null) {
i = new Integer(0);
} else {
i = new Integer(i.intValue() + 1);
}
ss.put(nn, i);
}
this.stack.push(nn + "[" + i.toString() + "]");
++this.templateLevel;
if (annon) {
processTemplate(n2, ff);
} else {
processTemplate(n2, null);
}
--this.templateLevel;
this.stack.pop();
}
else if (s.equals("field") || s.equals("exclGroup")) {
final Node name = n2.getAttributes().getNamedItem("name");
if (name != null) {
final String nn = escapeSom(name.getNodeValue());
Integer i = (Integer)ff.get(nn);
if (i == null) {
i = new Integer(0);
} else {
i = new Integer(i.intValue() + 1);
}
ff.put(nn, i);
this.stack.push(nn + "[" + i.toString() + "]");
final String unstack = printStack();
this.order.add(unstack);
inverseSearchAdd(unstack);
this.name2Node.put(unstack, n2);
this.stack.pop();
}
}
else if (!this.dynamicForm && this.templateLevel > 0 && s.equals("occur")) {
int initial = 1;
int min = 1;
int max = 1;
Node a = n2.getAttributes().getNamedItem("initial");
if (a != null) {
try{initial = Integer.parseInt(a.getNodeValue().trim());}catch(final Exception e){}
}
a = n2.getAttributes().getNamedItem("min");
if (a != null) {
try{min = Integer.parseInt(a.getNodeValue().trim());}catch(final Exception e){}
}
a = n2.getAttributes().getNamedItem("max");
if (a != null) {
try{max = Integer.parseInt(a.getNodeValue().trim());}catch(final Exception e){}
}
if (initial != min || min != max) {
this.dynamicForm = true;
}
}
}
n2 = n2.getNextSibling();
}
}
/**
* true if it's a dynamic form; false
* if it's a static form.
* @return true if it's a dynamic form; false
* if it's a static form
*/
public boolean isDynamicForm() {
return this.dynamicForm;
}
/**
* Sets the dynamic form flag. It doesn't change the template.
* @param dynamicForm the dynamic form flag
*/
public void setDynamicForm(final boolean dynamicForm) {
this.dynamicForm = dynamicForm;
}
}
/**
* Gets the class that contains the template processing section of the XFA.
* @return the class that contains the template processing section of the XFA
*/
public Xml2SomTemplate getTemplateSom() {
return this.templateSom;
}
/**
* Sets the class that contains the template processing section of the XFA
* @param templateSom the class that contains the template processing section of the XFA
*/
public void setTemplateSom(final Xml2SomTemplate templateSom) {
this.templateSom = templateSom;
}
/**
* Gets the class that contains the datasets processing section of the XFA.
* @return the class that contains the datasets processing section of the XFA
*/
public Xml2SomDatasets getDatasetsSom() {
return this.datasetsSom;
}
/**
* Sets the class that contains the datasets processing section of the XFA.
* @param datasetsSom the class that contains the datasets processing section of the XFA
*/
public void setDatasetsSom(final Xml2SomDatasets datasetsSom) {
this.datasetsSom = datasetsSom;
}
/**
* Gets the class that contains the "classic" fields processing.
* @return the class that contains the "classic" fields processing
*/
public AcroFieldsSearch getAcroFieldsSom() {
return this.acroFieldsSom;
}
/**
* Sets the class that contains the "classic" fields processing.
* @param acroFieldsSom the class that contains the "classic" fields processing
*/
public void setAcroFieldsSom(final AcroFieldsSearch acroFieldsSom) {
this.acroFieldsSom = acroFieldsSom;
}
/**
* Gets the Node that corresponds to the datasets part.
* @return the Node that corresponds to the datasets part
*/
public Node getDatasetsNode() {
return this.datasetsNode;
}
private static class SafeEmptyEntityResolver implements EntityResolver {
@Override
public InputSource resolveEntity(final String publicId, final String systemId) throws SAXException, IOException {
return new InputSource(new StringReader(""));
}
}
}
