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/*
* ===========================================
* 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
*
* ---------------
* NameLookup.java
* ---------------
*/
package org.jpedal.io;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.jpedal.objects.Javascript;
import org.jpedal.objects.raw.*;
import org.jpedal.utils.StringUtils;
/**
* convert names to refs
*/
public class NameLookup extends HashMap {
private final PdfFileReader objectReader;
private final HashMap embeddedFiles=new HashMap();
/**
*
* @param objectReader
*/
public NameLookup(final PdfFileReader objectReader) {
this.objectReader=objectReader;
}
/**
* read any names
* @param nameObject
* @param javascript
* @param isKid
*/
public void readNames(final PdfObject nameObject, final Javascript javascript, final boolean isKid){
final Map DestsAsList=nameObject.getOtherDictionaries();
if(!DestsAsList.isEmpty()){
readDestList(DestsAsList);
}else{
readNamesObject(nameObject, javascript, isKid);
}
}
/**
* read any names
* @param nameObject
* @param javascript
* @param isKid
*/
private void readNamesObject(final PdfObject nameObject, final Javascript javascript, final boolean isKid){
final ObjectDecoder objectDecoder=new ObjectDecoder(objectReader);
objectDecoder.checkResolved(nameObject);
final int[] nameLists= {PdfDictionary.Dests, PdfDictionary.EmbeddedFiles, PdfDictionary.JavaScript,PdfDictionary.XFAImages};
int count=nameLists.length;
if(isKid) {
count = 1;
}
PdfObject pdfObj;
PdfArrayIterator namesArray;
String name,value;
for(int ii=0;ii 0) {
for (final byte[] aKidList : kidList) {
final String nextValue = new String(aKidList);
final PdfObject nextObject = new NamesObject(nextValue);
if(aKidList[0]=='<') {
nextObject.setStatus(PdfObject.UNDECODED_DIRECT);
} else {
nextObject.setStatus(PdfObject.UNDECODED_REF);
}
nextObject.setUnresolvedData(aKidList,nameLists[ii]);
nextObject.ignoreRecursion(false);
objectDecoder.checkResolved(nextObject);
readNames(nextObject, javascript, true);
}
}
}
//get any names object
namesArray = pdfObj.getMixedArray(PdfDictionary.Names);
//read all the values
if (namesArray != null && namesArray.getTokenCount()>0) {
while (namesArray.hasMoreTokens()) {
if(nameLists[ii]==PdfDictionary.EmbeddedFiles) {
name = StringUtils.getTextString(namesArray.getNextValueAsByte(true), false);
}else{
name =namesArray.getNextValueAsString(true);
}
//fix for baseline_screens/11jun/Bundy_vs_F_Kruger_Sons_Bundy_v_F_Kruger!~!2200.pdf
//as code assumes paired values and not in this file (List a list)
if(!namesArray.hasMoreTokens()) {
continue;
}
value =namesArray.getNextValueAsString(true);
switch(nameLists[ii]){
case PdfDictionary.EmbeddedFiles:
embeddedFiles.put(name,value);
break;
//if Javascript, get full value and store, otherwise just get name
case PdfDictionary.JavaScript:
setJavaScriptName(value, objectDecoder, javascript, name);
break;
case PdfDictionary.XFAImages:
setXFAImage(value, objectDecoder, name);
break;
default: //just store
this.put(name, value);
}
}
}
}
}
private void setXFAImage(final String value, final ObjectDecoder objectDecoder, final String name) {
final PdfObject XFAImagesObj=new XObject(value);
XFAImagesObj.decompressStreamWhenRead();
final byte[] xfaData=StringUtils.toBytes(value);
if(xfaData[0]=='<') {
XFAImagesObj.setStatus(PdfObject.UNDECODED_DIRECT);
} else {
XFAImagesObj.setStatus(PdfObject.UNDECODED_REF);
}
if(value.contains(" ") || value.contains("<")){
//must be done AFTER setStatus()
XFAImagesObj.setUnresolvedData(xfaData, PdfDictionary.XObject);
objectDecoder.checkResolved(XFAImagesObj);
final byte[] decodedImageData=objectReader.readStream(XFAImagesObj, true, true, false, false, false, null);
this.put(name,decodedImageData);
}
}
static void setJavaScriptName(final String value, final ObjectDecoder objectDecoder, final Javascript javascript, final String name) {
final String JSstring;
final PdfObject javascriptObj=new NamesObject(value);
final byte[] jsData=StringUtils.toBytes(value);
if(jsData[0]=='<') {
javascriptObj.setStatus(PdfObject.UNDECODED_DIRECT);
} else {
javascriptObj.setStatus(PdfObject.UNDECODED_REF);
}
if(value.contains(" ") || value.contains("<")){
//must be done AFTER setStatus()
javascriptObj.setUnresolvedData(jsData, PdfDictionary.JS);
objectDecoder.checkResolved(javascriptObj);
final PdfObject JS=javascriptObj.getDictionary(PdfDictionary.JS);
if(JS!=null){ //in stream
JSstring=new String(JS.getDecodedStream());
}else{ //can also be text
JSstring=javascriptObj.getTextStreamValue((PdfDictionary.JS));
}
}else{
JSstring=value;
}
if(JSstring!=null){
//store
javascript.setCode(name, JSstring);
}
}
/**
* used to parser on demand if needed and return as key pair of name, PdfObject
* @return
*/
public Object[] getEmbeddedFiles() {
Object[] returnValues=new Object[embeddedFiles.keySet().size()*2];
int ptr=0;
String name, value;
Iterator embeddedFileNames=embeddedFiles.keySet().iterator();
final ObjectDecoder objectDecoder=new ObjectDecoder(objectReader);
while(embeddedFileNames.hasNext()){
name= embeddedFileNames.next();
returnValues[ptr++]=name;
value= embeddedFiles.get(name);
final PdfObject embeddedObj =new FSObject(value);
final byte[] jsData=StringUtils.toBytes(value);
if(jsData[0]=='<') {
embeddedObj.setStatus(PdfObject.UNDECODED_DIRECT);
} else {
embeddedObj.setStatus(PdfObject.UNDECODED_REF);
}
if(value.contains(" ") || value.contains("<")){
//must be done AFTER setStatus()
embeddedObj.setUnresolvedData(jsData, PdfDictionary.JS);
objectDecoder.checkResolved(embeddedObj);
returnValues[ptr++]= embeddedObj;
}else{
returnValues[ptr++]=null;
}
}
return returnValues;
}
private void readDestList(final Map DestsAsList) {
final Iterator keys=DestsAsList.keySet().iterator();
String key,value;
PdfObject rawvalue;
while(keys.hasNext()){
key=(String) keys.next();
rawvalue=(PdfObject)DestsAsList.get(key);
value=new String(rawvalue.getUnresolvedData());
this.put(key, value);
}
}
}
