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An Open Source JavaFX PDF Viewer
/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/support/
*
* (C) Copyright 1997-2017 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
*
* ---------------
* NumberValue.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.LogWriter;
import org.jpedal.utils.NumberUtils;
/**
*
*/
public class NumberValue {
public static int setNumberValue(final PdfObject pdfObject, int i, final byte[] raw, final int PDFkeyInt, final PdfFileReader objectReader) {
final int keyStart=i;
final int rawLength=raw.length;
//move cursor to end of text
while(raw[i]!=10 && raw[i]!=13 && raw[i]!=32 && raw[i]!=47 && raw[i]!=60 && raw[i]!=62 && raw[i]!='(' && raw[i]!='.'){
i++;
}
//actual value or first part of ref
final int number= NumberUtils.parseInt(keyStart, i, raw);
final int jj = StreamReaderUtils.skipSpaces(raw, i);
//check its not a ref (assumes it XX 0 R)
if(raw[jj]>= 48 && raw[jj]<=57) { //if next char is number 0-9 it may be a ref
//move cursor to end of number
int aa = StreamReaderUtils.skipToEndOfRef(raw, jj);
//move cursor to start of text
aa = StreamReaderUtils.skipSpacesOrOtherCharacter(raw, aa, 47);
final boolean isRef = aa < rawLength && raw[aa] == 'R';
if (isRef) {
return readNumberFromIndirectObj(PDFkeyInt, pdfObject, i, raw, objectReader, rawLength, number);
}
}
//store value
pdfObject.setIntNumber(PDFkeyInt,number);
if(debugFastCode) {
System.out.println(padding + "set numberValue=" + number);
}
// move back so loop works
return i-1;
}
static int readNumberFromIndirectObj(final int PDFkeyInt, final PdfObject pdfObject, int i, final byte[] raw, final PdfFileReader objectReader, final int rawLength, int number) {
final int keyStart;
i = StreamReaderUtils.skipSpaces(raw, i);
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(number, generation), 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");
}
LogWriter.writeLog("[Linearized] " + pdfObject.getObjectRefAsString() + " not yet available (8)");
return rawLength;
}
//lose obj at start
int j=0;
final int len=data.length;
//allow for example where start <<
if(len>1 && data[0]=='<' && data[1]=='<'){
}else if(len<=3){ //fix for short indirect value /K 30 0 R where 30 0R is -1 ie (11dec/Real Estate Tax Bill 2011.pdf)
}else{
j=3;
if(len>3){ //allow for small values (ie Rotate object pointing to value 0)
while(data[j-1]!=106 && data[j-2]!=98 && data[j-3]!=111){
j++;
if(j==len){
j=0;
break;
}
}
}
}
//skip any spaces after
if(len>1){//allow for small values (ie Rotate object pointing to value 0)
j = StreamReaderUtils.skipSpaces(data, j);
}
int count=j;
//skip any spaces at end
while(count