org.jpedal.io.types.ArrayUtils Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of OpenViewerFX Show documentation
Show all versions of OpenViewerFX Show documentation
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 1997-2015 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
*
* ---------------
* ArrayUtils.java
* ---------------
*/
package org.jpedal.io.types;
import org.jpedal.exception.PdfSecurityException;
import org.jpedal.io.DecryptionFactory;
import org.jpedal.utils.LogWriter;
/**
*
*/
public class ArrayUtils {
static boolean handleIndirect(final int endPoint, final byte[] raw, int aa){
boolean indirect=true;
//find next value and make sure not /
final int length=raw.length;
while(raw[aa]!=93 ){
aa++;
//allow for ref (ie 7 0 R)
if(aa>=endPoint || aa>=length) {
break;
}
if(raw[aa]=='R' && (raw[aa-1]==32 || raw[aa-1]==10 || raw[aa-1]==13)) {
break;
} else if(raw[aa]=='>' && raw[aa-1]=='>'){
indirect =false;
break;
}else if(raw[aa]==47){
indirect =false;
break;
}
}
return indirect;
}
static int skipToEndOfRef(int i, final byte[] raw) {
byte b=raw[i];
while(b!=10 && b!=13 && b!=32 && b!=47 && b!=60 && b!=62){
i++;
b=raw[i];
}
return i;
}
public static int skipComment(final byte[] raw, int i) {
while(raw[i]!=10 && raw[i]!=13){
i++;
}
//move cursor to start of text
while(raw[i]==10 || raw[i]==13 || raw[i]==32 || raw[i]==9) {
i++;
}
return i;
}
/**
* convert newValues.length) {
continue;
}
/*String array is a series of byte values.
* If the byte values has a \n in the middle we should ignore it.
* (customer-June2011/payam.pdf)
*/
if(str.charAt(ii)=='\n'){
ii++;
}
nextValue=str.substring(ii,ii+2);
IDbytes[ii/2]=(byte)Integer.parseInt(nextValue,16);
}
newValues=IDbytes;
if(decryptor!=null){
byte[] decryptedValue=null;
try {
decryptedValue = decryptor.decryptString(IDbytes, ref);
} catch (PdfSecurityException ex) {
if(LogWriter.isOutput()) {
LogWriter.writeLog("Exception: " + ex.getMessage());
}
}
newValues= (decryptedValue==null) ? IDbytes:decryptedValue;
}
return newValues;
}
public static int skipSpaces(final byte[] data, int start) {
//now skip any spaces to key or text
while(data[start]==10 || data[start]==13 || data[start]==32) {
start++;
}
return start;
}
}