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Version modificada de iText 2.1.7 con el paquete cambiado, adaptaciones menores para firma y dependencias actualizadas.
/*
* Copyright 2003 by 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.IOException;
import java.util.HashMap;
import java.util.LinkedHashMap;
/** Reads an FDF form and makes the fields available
* @author Paulo Soares ([email protected])
*/
class FdfReader extends PdfReader {
private HashMap fields;
private String fileSpec;
private PdfName encoding;
@Override
protected void readPdf() throws IOException {
this.fields = new LinkedHashMap();
try {
this.tokens.checkFdfHeader();
rebuildXref();
readDocObj();
}
finally {
try {
this.tokens.close();
}
catch (final Exception e) {
// empty on purpose
}
}
readFields();
}
private void kidNode(final PdfDictionary merged, String name) {
final PdfArray kids = merged.getAsArray(PdfName.KIDS);
if (kids == null || kids.isEmpty()) {
if (name.length() > 0) {
name = name.substring(1);
}
this.fields.put(name, merged);
}
else {
merged.remove(PdfName.KIDS);
for (int k = 0; k < kids.size(); ++k) {
final PdfDictionary dic = new PdfDictionary();
dic.merge(merged);
final PdfDictionary newDic = kids.getAsDict(k);
final PdfString t = newDic.getAsString(PdfName.T);
String newName = name;
if (t != null) {
newName += "." + t.toUnicodeString();
}
dic.merge(newDic);
dic.remove(PdfName.T);
kidNode(dic, newName);
}
}
}
private void readFields() {
this.catalog = this.trailer.getAsDict(PdfName.ROOT);
final PdfDictionary fdf = this.catalog.getAsDict(PdfName.FDF);
if (fdf == null) {
return;
}
final PdfString fs = fdf.getAsString(PdfName.F);
if (fs != null) {
this.fileSpec = fs.toUnicodeString();
}
final PdfArray fld = fdf.getAsArray(PdfName.FIELDS);
if (fld == null) {
return;
}
this.encoding = fdf.getAsName(PdfName.ENCODING);
final PdfDictionary merged = new PdfDictionary();
merged.put(PdfName.KIDS, fld);
kidNode(merged, "");
}
/** Gets all the fields. The map is keyed by the fully qualified
* field name and the value is a merged PdfDictionary
* with the field content.
* @return all the fields
*/
public HashMap getFields() {
return this.fields;
}
/** Gets the field value or null if the field does not
* exist or has no value defined.
* @param name the fully qualified field name
* @return the field value or null
*/
String getFieldValue(final String name) {
final PdfDictionary field = (PdfDictionary)this.fields.get(name);
if (field == null) {
return null;
}
final PdfObject v = getPdfObject(field.get(PdfName.V));
if (v == null) {
return null;
}
if (v.isName()) {
return PdfName.decodeName(((PdfName)v).toString());
} else if (v.isString()) {
final PdfString vs = (PdfString)v;
if (this.encoding == null || vs.getEncoding() != null) {
return vs.toUnicodeString();
}
final byte b[] = vs.getBytes();
if (b.length >= 2 && b[0] == (byte)254 && b[1] == (byte)255) {
return vs.toUnicodeString();
}
try {
if (this.encoding.equals(PdfName.SHIFT_JIS)) {
return new String(b, "SJIS");
} else if (this.encoding.equals(PdfName.UHC)) {
return new String(b, "MS949");
} else if (this.encoding.equals(PdfName.GBK)) {
return new String(b, "GBK");
} else if (this.encoding.equals(PdfName.BIGFIVE)) {
return new String(b, "Big5");
}
}
catch (final Exception e) {
}
return vs.toUnicodeString();
}
return null;
}
/** Gets the PDF file specification contained in the FDF.
* @return the PDF file specification contained in the FDF
*/
public String getFileSpec() {
return this.fileSpec;
}
}