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/* -*- Mode: Java; tab-width: 4; c-basic-offset: 4 -*- */
/*
* Copyright 2003 by Paulo Soares.
*
*
* 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.
*
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) 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.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*
* 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.lowagie.text.pdf;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.ArrayList;
import java.net.URL;
/** Reads an FDF form and makes the fields available
* @author Paulo Soares (psoares@consiste.pt)
*/
public class FdfReader extends PdfReader {
HashMap fields;
String fileSpec;
PdfName encoding;
/** Reads an FDF form.
* @param filename the file name of the form
* @throws IOException on error
*/
public FdfReader(String filename) throws IOException {
super(filename);
}
/** Reads an FDF form.
* @param pdfIn the byte array with the form
* @throws IOException on error
*/
public FdfReader(byte pdfIn[]) throws IOException {
super(pdfIn);
}
/** Reads an FDF form.
* @param url the URL of the document
* @throws IOException on error
*/
public FdfReader(URL url) throws IOException {
super(url);
}
/** Reads an FDF form.
* @param is the <CODE>InputStream</CODE> containing the document. The stream is read to the
* end but is not closed
* @throws IOException on error
*/
public FdfReader(InputStream is) throws IOException {
super(is);
}
protected void readPdf() throws IOException {
fields = new HashMap();
try {
tokens.checkFdfHeader();
rebuildXref();
readDocObj();
}
finally {
try {
tokens.close();
}
catch (Exception e) {
// empty on purpose
}
}
readFields();
}
protected void kidNode(PdfDictionary merged, String name) {
PdfArray kids = (PdfArray)getPdfObject(merged.get(PdfName.KIDS));
if (kids == null || kids.getArrayList().size() == 0) {
if (name.length() > 0)
name = name.substring(1);
fields.put(name, merged);
}
else {
merged.remove(PdfName.KIDS);
ArrayList ar = kids.getArrayList();
for (int k = 0; k < ar.size(); ++k) {
PdfDictionary dic = new PdfDictionary();
dic.merge(merged);
PdfDictionary newDic = (PdfDictionary)getPdfObject((PdfObject)ar.get(k));
PdfString t = (PdfString)getPdfObject(newDic.get(PdfName.T));
String newName = name;
if (t != null)
newName += "." + t.toUnicodeString();
dic.merge(newDic);
dic.remove(PdfName.T);
kidNode(dic, newName);
}
}
}
protected void readFields() throws IOException {
catalog = (PdfDictionary)getPdfObject(trailer.get(PdfName.ROOT));
PdfDictionary fdf = (PdfDictionary)getPdfObject(catalog.get(PdfName.FDF));
PdfString fs = (PdfString)getPdfObject(fdf.get(PdfName.F));
if (fs != null)
fileSpec = fs.toUnicodeString();
PdfArray fld = (PdfArray)getPdfObject(fdf.get(PdfName.FIELDS));
if (fld == null)
return;
encoding = (PdfName)getPdfObject(fdf.get(PdfName.ENCODING));
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 <CODE>PdfDictionary</CODE>
* with the field content.
* @return all the fields
*/
public HashMap getFields() {
return fields;
}
/** Gets the field dictionary.
* @param name the fully qualified field name
* @return the field dictionary
*/
public PdfDictionary getField(String name) {
return (PdfDictionary)fields.get(name);
}
/** Gets the field value or <CODE>null</CODE> if the field does not
* exist or has no value defined.
* @param name the fully qualified field name
* @return the field value or <CODE>null</CODE>
*/
public String getFieldValue(String name) {
PdfDictionary field = (PdfDictionary)fields.get(name);
if (field == null)
return null;
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()) {
PdfString vs = (PdfString)v;
if (encoding == null || vs.getEncoding() != null)
return vs.toUnicodeString();
byte b[] = vs.getBytes();
if (b.length >= 2 && b[0] == (byte)254 && b[1] == (byte)255)
return vs.toUnicodeString();
try {
if (encoding.equals(PdfName.SHIFT_JIS))
return new String(b, "SJIS");
else if (encoding.equals(PdfName.UHC))
return new String(b, "MS949");
else if (encoding.equals(PdfName.GBK))
return new String(b, "GBK");
else if (encoding.equals(PdfName.BIGFIVE))
return new String(b, "Big5");
}
catch (Exception e) {
}
return vs.toUnicodeString();
}
return null;
}
// ssteward
// in a PDF, the Rich Text value of a field may be stored in
// a string or a stream; I wonder if this applied to FDF, too?
public String getFieldRichValue(String name) {
PdfDictionary field = (PdfDictionary)fields.get(name);
if (field == null)
return null;
PdfObject rv = getPdfObject(field.get(PdfName.RV));
if (rv == null)
return null;
if (rv.isName())
return PdfName.decodeName(((PdfName)rv).toString());
else if (rv.isString())
return ((PdfString)rv).toUnicodeString();
else
return null;
}
/** Gets the PDF file specification contained in the FDF.
* @return the PDF file specification contained in the FDF
*/
public String getFileSpec() {
return fileSpec;
}
}
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