org.jpedal.io.types.Form Maven / Gradle / Ivy
/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/support/
*
* (C) Copyright 1997-2016 IDRsolutions and Contributors.
*
* This file is part of JPedal/JPDF2HTML5
*
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ---------------
* Form.java
* ---------------
*/
package org.jpedal.io.types;
import org.jpedal.io.PdfFileReader;
import org.jpedal.objects.raw.FormObject;
import org.jpedal.objects.raw.PdfDictionary;
import org.jpedal.objects.raw.PdfObject;
import org.jpedal.utils.StringUtils;
/**
*
*/
public class Form {
public static void setFieldNames(final PdfObject pdfObject, final PdfFileReader objectReader) {
String fieldName =pdfObject.getTextStreamValue(PdfDictionary.T);
if(fieldName!=null ){
//at this point newString is the raw byte value (99% of the time this is the
//string but it can be encode in some other ways (like a set of hex values)
//so we need to use PdfObjectReader.getTextString(newString, false) rather than new String(newString)
//6 0 obj <
//
//Most of the time you can forget about this because getTextStream() handles it for you
//
//Except here where we are manipulating the bytes directly...
String parent = pdfObject.getStringKey(PdfDictionary.Parent);
// if no name, or parent has one recursively scan tree for one in Parent
boolean isMultiple=false;
while (parent != null) {
final FormObject parentObj =new FormObject(parent,false);
objectReader.readObject(parentObj);
final String newName = parentObj.getTextStreamValue(PdfDictionary.T);
if (newName != null){
//we pass in kids data so stop name.name
if(!fieldName.equals(newName) || !parent.equals(pdfObject.getObjectRefAsString())) {
fieldName = newName + '.' + fieldName;
isMultiple=true;
}
}else{
break;
}
parent = parentObj.getParentRef();
}
//set the field name to be the Fully Qualified Name
if(isMultiple) {
pdfObject.setTextStreamValue(PdfDictionary.T, StringUtils.toBytes(fieldName));
}
}
}
}