/**
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.jpedal.org
* (C) Copyright 1997-2008, IDRsolutions and Contributors.
*
* This file is part of JPedal
*
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
*
* ---------------
* ShowDocumentProperties.java
* ---------------
*/
package org.jpedal.examples;
import java.io.File;
import org.jpedal.PdfDecoder;
import org.jpedal.objects.PdfFileInformation;
/**
* This example opens a pdf file and gets the document properties
*/
public class ShowDocumentProperties
{
/**user dir in which program can write*/
private String user_dir = System.getProperty( "user.dir" );
/**sample file which can be setup - substitute your own. */
private static String test_file = "/mnt/win_d/sample.pdf";
/**example method to open a file and return the number of pages*/
public ShowDocumentProperties( String file_name )
{
String separator = System.getProperty( "file.separator" );
//check output dir has separator
if( user_dir.endsWith( separator ) == false )
user_dir = user_dir + separator;
/**
* set up PdfDecoder object telling
* it whether to display messages
* and where to find its lookup tables
*/
PdfDecoder decode_pdf = null;
//PdfDecoder returns a PdfException if there is a problem
try
{
decode_pdf = new PdfDecoder( false );
/**
* open the file (and read metadata including pages in file)
*/
System.out.println( "Opening file :" + file_name );
decode_pdf.openPdfFile( file_name );
}catch( Exception e ){
System.err.println( "3.Exception " + e + " in pdf code" );
}
/**
* extract data from pdf (if allowed).
*/
if ((decode_pdf.isEncrypted())&&(!decode_pdf.isExtractionAllowed())) {
System.out.println("Encrypted settings");
System.out.println("Please look at SimpleViewer for code sample to handle such files");
System.out.println("Or get support/consultancy");
}
/**get the Pdf file information object to extract info from*/
PdfFileInformation currentFileInformation=decode_pdf.getFileInformationData();
/**get the document properties*/
String[] values=currentFileInformation.getFieldValues();
String[] fields=currentFileInformation.getFieldNames();
/**display*/
int count=fields.length;
System.out.println("Fields");
System.out.println("======");
for(int i=0;i<count;i++){
System.out.println(fields[i]+" = "+values[i]);
}
/**get and show any metadata*/
System.out.println("\nMetadata");
System.out.println("======");
System.out.println(currentFileInformation.getFileXMLMetaData());
/**close the pdf file*/
decode_pdf.closePdfFile();
}
//////////////////////////////////////////////////////////////////////////
/**
* main routine which checks for any files passed and runs the demo
*/
public static void main( String[] args )
{
System.out.println( "Simple demo to extract pdf file properties" );
//set to default
String file_name = test_file;
//check user has passed us a filename and use default if none
if( args.length != 1 )
System.out.println( "Default test file used" );
else
{
file_name = args[0];
System.out.println( "File :" + file_name );
}
//check file exists
File pdf_file = new File( file_name );
//if file exists, open and get number of pages
if( pdf_file.exists() == false )
System.out.println( "File " + file_name + " not found" );
else{
new ShowDocumentProperties( file_name );
}
}
}