217 lines
8.2 KiB
C#
217 lines
8.2 KiB
C#
using System;
|
|
using System.Text;
|
|
using System.Collections;
|
|
using System.Net;
|
|
using System.IO;
|
|
|
|
/*
|
|
* 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/
|
|
*/
|
|
namespace iTextSharp.text.pdf {
|
|
/** Reads an FDF form and makes the fields available
|
|
* @author Paulo Soares (psoares@consiste.pt)
|
|
*/
|
|
public class FdfReader : PdfReader {
|
|
|
|
internal Hashtable fields;
|
|
internal String fileSpec;
|
|
internal PdfName encoding;
|
|
|
|
/** Reads an FDF form.
|
|
* @param filename the file name of the form
|
|
* @throws IOException on error
|
|
*/
|
|
public FdfReader(String filename) : base(filename) {
|
|
}
|
|
|
|
/** Reads an FDF form.
|
|
* @param pdfIn the byte array with the form
|
|
* @throws IOException on error
|
|
*/
|
|
public FdfReader(byte[] pdfIn) : base(pdfIn) {
|
|
}
|
|
|
|
/** Reads an FDF form.
|
|
* @param url the URL of the document
|
|
* @throws IOException on error
|
|
*/
|
|
public FdfReader(Uri url) : base(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(Stream isp) : base(isp) {
|
|
}
|
|
|
|
protected internal override void ReadPdf() {
|
|
fields = new Hashtable();
|
|
try {
|
|
tokens.CheckFdfHeader();
|
|
RebuildXref();
|
|
ReadDocObj();
|
|
}
|
|
finally {
|
|
try {
|
|
tokens.Close();
|
|
}
|
|
catch {
|
|
// empty on purpose
|
|
}
|
|
}
|
|
ReadFields();
|
|
}
|
|
|
|
protected virtual void KidNode(PdfDictionary merged, String name) {
|
|
PdfArray kids = merged.GetAsArray(PdfName.KIDS);
|
|
if (kids == null || kids.Size == 0) {
|
|
if (name.Length > 0)
|
|
name = name.Substring(1);
|
|
fields[name] = merged;
|
|
}
|
|
else {
|
|
merged.Remove(PdfName.KIDS);
|
|
for (int k = 0; k < kids.Size; ++k) {
|
|
PdfDictionary dic = new PdfDictionary();
|
|
dic.Merge(merged);
|
|
PdfDictionary newDic = kids.GetAsDict(k);
|
|
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);
|
|
}
|
|
}
|
|
}
|
|
|
|
protected virtual void ReadFields() {
|
|
catalog = trailer.GetAsDict(PdfName.ROOT);
|
|
PdfDictionary fdf = catalog.GetAsDict(PdfName.FDF);
|
|
if (fdf == null)
|
|
return;
|
|
PdfString fs = fdf.GetAsString(PdfName.F);
|
|
if (fs != null)
|
|
fileSpec = fs.ToUnicodeString();
|
|
PdfArray fld = fdf.GetAsArray(PdfName.FIELDS);
|
|
if (fld == null)
|
|
return;
|
|
encoding = fdf.GetAsName(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 Hashtable Fields {
|
|
get {
|
|
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[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[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.Encoding != 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 Encoding.GetEncoding(932).GetString(b);
|
|
else if (encoding.Equals(PdfName.UHC))
|
|
return Encoding.GetEncoding(949).GetString(b);
|
|
else if (encoding.Equals(PdfName.GBK))
|
|
return Encoding.GetEncoding(936).GetString(b);
|
|
else if (encoding.Equals(PdfName.BIGFIVE))
|
|
return Encoding.GetEncoding(950).GetString(b);
|
|
}
|
|
catch {
|
|
}
|
|
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 FileSpec {
|
|
get {
|
|
return fileSpec;
|
|
}
|
|
}
|
|
}
|
|
} |