org.jpedal.io.types.FloatValue 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


 *
 * ---------------
 * FloatValue.java
 * ---------------
 */
package org.jpedal.io.types;

import static org.jpedal.io.ObjectDecoder.debugFastCode;
import static org.jpedal.io.ObjectDecoder.padding;
import org.jpedal.io.PdfFileReader;
import org.jpedal.objects.raw.PdfObject;
import org.jpedal.utils.NumberUtils;

/**
 *
 */
public class FloatValue {

    
    public static int setFloatValue(final PdfObject pdfObject, int i, final byte[] raw, final int length, final int PDFkeyInt, final PdfFileReader objectReader) {
        
        //roll on
        i++;
        
        i = StreamReaderUtils.skipSpacesOrOtherCharacter(raw, i, 47);
        
        int keyStart=i;
        i = StreamReaderUtils.skipToEndOfRef(raw, i);
        
        //actual value or first part of ref
        float number= NumberUtils.parseFloat(keyStart, i, raw);
        
        //roll onto next nonspace char and see if number
        int jj=i;
        jj = StreamReaderUtils.skipSpaces(raw, jj);
        
        //check its not a ref (assumes it XX 0 R)
        if(raw[jj]>= 48 && raw[jj]<=57){ //if next char is number 0-9 its a ref
            
            //move cursor to start of generation
            while(raw[i]==10 || raw[i]==13 || raw[i]==32 || raw[i]==47 || raw[i]==60) {
                i++;
            }

            
            /*
             * get generation number
             */
            keyStart=i;
            //move cursor to end of reference
            i = StreamReaderUtils.skipToEndOfRef(raw, i);
            
            final int generation= NumberUtils.parseInt(keyStart, i, raw);
            
            //move cursor to start of R
            while(raw[i]==10 || raw[i]==13 || raw[i]==32 || raw[i]==47 || raw[i]==60) {
                i++;
            }
            
            if(raw[i]!=82){ //we are expecting R to end ref
                throw new RuntimeException("3. Unexpected value in file - please send to IDRsolutions for analysis");
            }
            
            //read the Dictionary data
            final byte[] data=objectReader.readObjectAsByteArray(pdfObject, objectReader.isCompressed((int) number, generation), (int) number, generation);
            
            //allow for data in Linear object not yet loaded
            if(data==null){
                pdfObject.setFullyResolved(false);
                
                if(debugFastCode) {
                    System.out.println(padding + "Data not yet loaded");
                }
                
                i=length;
                return i;
            }
            
            //lose obj at start
            int j=3;
            while(data[j-1]!=106 && data[j-2]!=98 && data[j-3]!=111) {
                j++;
            }
            
            j = StreamReaderUtils.skipSpaces(data, j);
            
            int count=j;
            
            //skip any spaces at end
            while(data[count]!=10 && data[count]!=13 && data[count]!=32){// || data[j]==47 || data[j]==60)
                count++;
            }
            
            number= NumberUtils.parseFloat(j, count, data);
            
        }
        
        //store value
        pdfObject.setFloatNumber(PDFkeyInt,number);
        
        if(debugFastCode) {
            System.out.println(padding + "set key in numberValue=" + number);//+" in "+pdfObject);
        }
        
        i--;// move back so loop works
        return i;
    }
    
}