net.mitnet.tools.pdf.book.pdf.itext.PdfReaderHelper.java Source code

Introduction

Here is the source code for net.mitnet.tools.pdf.book.pdf.itext.PdfReaderHelper.java

Source

/*
Copyright (C) 2010-2011  Tim Telcik <telcik@gmail.com>
    
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
This program 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 General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

package net.mitnet.tools.pdf.book.pdf.itext;

import java.util.Map;

import com.lowagie.text.pdf.PdfName;
import com.lowagie.text.pdf.PdfReader;

/**
 * PDF Reader Helper.
 *
 * This class provides helper methods to an underlying PDFReader.
 * 
 * @author Tim Telcik <telcik@gmail.com>
 */
public class PdfReaderHelper {

    private PdfReader pdfReader = null;
    private Map<String, String> pdfInfo = null;

    public PdfReaderHelper(PdfReader pdfReader) {
        this.pdfReader = pdfReader;
        this.pdfInfo = pdfReader.getInfo();
    }

    /*
    public String getPdfStringValue( PdfDictionary pdfDictionary, PdfName pdfName ) {
       return getPdfStringValue( pdfDictionary, pdfName, null );
    }
        
    public String getPdfStringValue( PdfDictionary pdfDictionary, PdfName pdfName, String defaultValue ) {
       String result = defaultValue;
       if (pdfDictionary != null) {
     PdfString pdfString = pdfDictionary.getAsString( pdfName );
     if (pdfString != null) {
        result = pdfString.toString();
     }
       }
       return result;
    }
    */

    public String getDocumentTitle(String defaultValue) {
        return getPdfStringValue(this.pdfInfo, PdfName.TITLE, defaultValue);
    }

    public String getDocumentAuthor(String defaultValue) {
        return getPdfStringValue(this.pdfInfo, PdfName.AUTHOR, defaultValue);
    }

    /**
     * @see PdfReader#getInfo()
     */
    public String getPdfStringValue(Map<String, String> pdfInfo, PdfName pdfName, String defaultValue) {
        String result = defaultValue;
        if ((pdfInfo != null) && (pdfName != null)) {
            String pdfObjectKey = PdfName.decodeName(pdfName.toString());
            String pdfStringValue = (String) pdfInfo.get(pdfObjectKey);
            if (pdfStringValue != null) {
                result = pdfStringValue;
            }
        }
        return result;
    }

    /*
    public String getPdfDocumentTitle( PdfDictionary pdfDicionary ) {
       return getPdfStringValue( pdfDicionary, PdfName.TITLE );
    }
    */

    /*
    public String getPdfDocumentAuthor( PdfDictionary pdfDicionary ) {
       return getPdfStringValue( pdfDicionary, PdfName.AUTHOR );
    }
    */

}