org.jpedal.objects.PdfFileInformation Maven / Gradle / Ivy
Show all versions of OpenViewerFX Show documentation
/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/support/
*
* (C) Copyright 1997-2015 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
*
* ---------------
* PdfFileInformation.java
* ---------------
*/
package org.jpedal.objects;
import org.jpedal.constants.PDFflags;
import org.jpedal.io.DecryptionFactory;
import org.jpedal.io.ObjectDecoder;
import org.jpedal.io.PdfFileReader;
import org.jpedal.io.PdfObjectReader;
import org.jpedal.objects.raw.MetadataObject;
import org.jpedal.objects.raw.PdfDictionary;
import org.jpedal.objects.raw.PdfObject;
import org.jpedal.utils.LogWriter;
import org.jpedal.utils.StringUtils;
/**
* Added as a repository to store PDF file metadata (both legacy fields and XML metadata) in so that it can be accesed.
*
Please see org.jpedal.examples (especially Viewer) for example code.
*/
public class PdfFileInformation
{
/**list of pdf information fields data might contain*/
private static final String[] information_fields =
{
"Title",
"Author",
"Subject",
"Keywords",
"Creator",
"Producer",
"CreationDate",
"ModDate",
"Trapped" };
/**list of pdf information fields data might contain*/
public static final int[] information_field_IDs =
{
PdfDictionary.Title,
PdfDictionary.Author,
PdfDictionary.Subject,
PdfDictionary.Keywords,
PdfDictionary.Creator,
PdfDictionary.Producer,
PdfDictionary.CreationDate,
PdfDictionary.ModDate,
PdfDictionary.Trapped};
/**assigned values found in pdf information object*/
private final String[] information_values = {"","","","","","","","",""};
/**Any XML metadata as a string*/
private String XMLmetadata;
private byte[] rawData;
/**@return list of field names*/
public static String[] getFieldNames(){
return information_fields;
}
/**@return XML data embedded inside PDF*/
public String getFileXMLMetaData(){
if(rawData==null) {
return "";
} else{
if(XMLmetadata==null){
//make deep copy
final int length=rawData.length;
byte[] stream=new byte[length];
System.arraycopy(rawData,0,stream,0,length);
//strip empty lines
final int count=stream.length;
int reached=0;
byte lastValue=0;
for(int ii=0;ii so find last >
* and remove the rest)
*/
if(rawData!=null){
int count=rawData.length;
while(count>1){
if(rawData[count-1]=='>') {
break;
}
count--;
}
//copy and resize
if(count>0){
final byte[] trimmedVersion=new byte[count];
System.arraycopy(rawData,0,trimmedVersion,0,count);
rawData=trimmedVersion;
}
}
}
return this;
}
}