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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 1997-2017 IDRsolutions and Contributors.
 *
 * This file is part of JPedal/JPDF2HTML5
 *
 @LICENSE@
 *
 * ---------------
 * PdfObject.java
 * ---------------
 */
package org.jpedal.objects.raw;

import java.awt.Shape;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;

import org.jpedal.fonts.StandardFonts;
import org.jpedal.io.ObjectStore;
import org.jpedal.io.PdfFileReader;
import org.jpedal.io.security.CryptoAES;
import org.jpedal.utils.LogWriter;
import org.jpedal.utils.NumberUtils;
import org.jpedal.utils.StringUtils;

/**
 * holds actual data for PDF file to process
 */
public class PdfObject {

    protected boolean maybeIndirect;
    protected boolean isFullyResolved = true;
    protected boolean isDataExternal;

    private boolean streamMayBeCorrupt;

    Shape clip;

    byte[] convertedData;

    /**
     * states
     */
    public static final int DECODED = 0;
    public static final int UNDECODED_REF = 1;
    public static final int UNDECODED_DIRECT = 2;

    private int status;

    byte[] unresolvedData;

    protected int pageNumber = -1;

    int PDFkeyInt = -1;

    //our type which may not be same as /Type
    int objType = PdfDictionary.Unknown;

    //key of object
    private int id = -1;

    protected int colorspace = PdfDictionary.Unknown, subtype = PdfDictionary.Unknown, type = PdfDictionary.Unknown;

    private int BitsPerComponent = -1, BitsPerCoordinate = -1, BitsPerFlag = -1, Count, FormType = -1, Length = -1, Length1 = -1, Length2 = -1, Length3 = -1, Rotate = -1, verticesPerRow = -1; //-1 shows unset

    private float[] ArtBox, BBox, BleedBox, CropBox, Decode, Domain, Matrix, Matte, MediaBox, Range, TrimBox;

    protected PdfObject Collection, ColorSpace, DecodeParms, Encoding, Function,
            Params, Resources, Shading, SMask;

    private boolean ignoreRecursion, ignoreStream;

    //used by font code
    protected boolean isZapfDingbats, isSymbol;

    private boolean isCompressedStream;

    protected int generalType = PdfDictionary.Unknown; // some Dictionaries can be a general type (ie /ToUnicode /Identity-H)

    private String generalTypeAsString; //some values (ie CMAP can have unknown settings)

    //flag to show if we want parents (generally NO as will scan all up tree every time to root)
    protected boolean includeParent;

    private String Creator, Parent, Name, S, Title;
    private byte[] rawCreator, rawParent, rawName, rawS, rawTitle;

    protected String ref;
    int intRef, gen;

    protected boolean hasStream;

    public byte[] stream;
    private byte[] DecodedStream;

    //use for caching
    private long startStreamOnDisk = -1;
    private PdfFileReader objReader;
    private String cacheName;

    private byte[][] ColorSpaceArray, ExtGStateArray, Filter, FontArray, FunctionArray, Nums, PatternArray, ShadingArray, TR, XObjectArray;

    private byte[][] keys;

    private byte[][] values;

    private Object[] DecodeParmsAsArray;

    //used to track AP
    protected int parentType = -1;
    private boolean isInCompressedStream;

    /**
     * used to give the number of a new XFA reference ie. 1 0 X (XFA internal form)
     */
    private static int newXFAFormID = 1;

    /**
     * set this PdfObject up as an internal object and define its reference
     */
    @SuppressWarnings("UnusedDeclaration")
    protected void setInternalReference() {
        //if this is an internal object generate the next key
        ref = (newXFAFormID++) + " 0 X";
    }

    protected PdfObject() {

    }


    public PdfObject(final int intRef, final int gen) {
        setRef(intRef, gen);
    }

    public void setRef(final int intRef, final int gen) {
        this.intRef = intRef;
        this.gen = gen;

        //force reset as may have changed
        ref = null;

    }

    /**
     * name of file with cached data on disk or null
     *
     * @param objReader Initializes a PdfFileReader object
     * @return The name of the cache
     */
    public String getCacheName(final PdfFileReader objReader) {

        if (isCached()) {
            cacheName = null;
            this.getCachedStreamFile(objReader);
        }
        return cacheName;
    }

    public void setRef(final String ref) {

        this.ref = ref;

    }

    public PdfObject(final String ref) {
        this.ref = ref;
    }

    public PdfObject(final int type) {
        this.generalType = type;
    }

    protected static boolean[] deepCopy(final boolean[] input) {

        if (input == null) {
            return null;
        }

        final int count = input.length;

        final boolean[] deepCopy = new boolean[count];
        System.arraycopy(input, 0, deepCopy, 0, count);

        return deepCopy;
    }

    public int getStatus() {
        return status;
    }

    public byte[] getUnresolvedData() {
        return unresolvedData;
    }

    public int getPDFkeyInt() {
        return PDFkeyInt;
    }

    public void setUnresolvedData(final byte[] unresolvedData, final int PDFkeyInt) {
        this.unresolvedData = unresolvedData;
        this.PDFkeyInt = PDFkeyInt;
    }

    public void setStatus(final int status) {
        this.status = status;
        this.unresolvedData = null;
    }

    protected static float[] deepCopy(final float[] input) {

        if (input == null) {
            return null;
        }

        final int count = input.length;

        final float[] deepCopy = new float[count];
        System.arraycopy(input, 0, deepCopy, 0, count);

        return deepCopy;
    }

    protected static double[] deepCopy(final double[] input) {

        if (input == null) {
            return null;
        }

        final int count = input.length;

        final double[] deepCopy = new double[count];
        System.arraycopy(input, 0, deepCopy, 0, count);

        return deepCopy;
    }

    protected static int[] deepCopy(final int[] input) {

        if (input == null) {
            return null;
        }

        final int count = input.length;

        final int[] deepCopy = new int[count];
        System.arraycopy(input, 0, deepCopy, 0, count);

        return deepCopy;
    }

    protected static byte[][] deepCopy(final byte[][] input) {

        if (input == null) {
            return null;
        }

        final int count = input.length;

        final byte[][] deepCopy = new byte[count][];
        System.arraycopy(input, 0, deepCopy, 0, count);

        return deepCopy;
    }

    public PdfObject getDictionary(final int id) {

        switch (id) {

            case PdfDictionary.Collection:
                return Collection;

            case PdfDictionary.ColorSpace:
                return ColorSpace;

            case PdfDictionary.DecodeParms:
                return DecodeParms;

            case PdfDictionary.Function:
                return Function;

            case PdfDictionary.Params:
                return Params;

            case PdfDictionary.Resources:
                return Resources;

            case PdfDictionary.Shading:
                return Shading;

            case PdfDictionary.SMask:
                return SMask;

            default:
                return null;
        }
    }

    public int getGeneralType(final int id) {

        //special case
        if (id == PdfDictionary.Encoding && isZapfDingbats) //note this is Enc object so local
        {
            return StandardFonts.ZAPF;
        } else if (id == PdfDictionary.Encoding && isSymbol) //note this is Enc object so local
        {
            return StandardFonts.SYMBOL;
        } else if (id == PdfDictionary.Type) {
            return objType;
        } else {
            return generalType;
        }
    }

    public String getGeneralStringValue() {
        return generalTypeAsString;
    }

    public void setGeneralStringValue(final String generalTypeAsString) {
        this.generalTypeAsString = generalTypeAsString;
    }

    public void setIntNumber(final int id, final int value) {

        switch (id) {

            case PdfDictionary.BitsPerComponent:
                BitsPerComponent = value;
                break;

            case PdfDictionary.BitsPerCoordinate:
                BitsPerCoordinate = value;
                break;

            case PdfDictionary.BitsPerFlag:
                BitsPerFlag = value;
                break;

            case PdfDictionary.Count:
                Count = value;
                break;

            case PdfDictionary.FormType:
                FormType = value;
                break;

            case PdfDictionary.Length:
                Length = value;
                break;

            case PdfDictionary.Length1:
                Length1 = value;
                break;

            case PdfDictionary.Length2:
                Length2 = value;
                break;

            case PdfDictionary.Length3:
                Length3 = value;
                break;

            case PdfDictionary.Rotate:
                Rotate = value;
                break;

            case PdfDictionary.VerticesPerRow:
                verticesPerRow = value;
                break;

        }
    }

    public void setFloatNumber(final int id, final float value) {
    }

    public int getInt(final int id) {

        switch (id) {

            case PdfDictionary.BitsPerComponent:
                return BitsPerComponent;

            case PdfDictionary.BitsPerCoordinate:
                return BitsPerCoordinate;

            case PdfDictionary.BitsPerFlag:
                return BitsPerFlag;

            case PdfDictionary.Count:
                return Count;

            case PdfDictionary.FormType:
                return FormType;

            case PdfDictionary.Length:
                return Length;

            case PdfDictionary.Length1:
                return Length1;

            case PdfDictionary.Length2:
                return Length2;

            case PdfDictionary.Length3:
                return Length3;

            case PdfDictionary.Rotate:
                return Rotate;

            case PdfDictionary.VerticesPerRow:
                return verticesPerRow;

            default:
                return PdfDictionary.Unknown;
        }
    }

    public float getFloatNumber(final int id) {

        return PdfDictionary.Unknown;
    }

    public boolean getBoolean(final int id) {
        return false;
    }

    public void setBoolean(final int id, final boolean value) {
    }

    public void setDictionary(final int id, final PdfObject value) {

        if (value != null) {
            value.id = id;
        }

        switch (id) {

            case PdfDictionary.Collection:
                Collection = value;
                break;

            case PdfDictionary.ColorSpace:
                ColorSpace = value;
                break;

            case PdfDictionary.DecodeParms:
                DecodeParms = value;
                break;

            case PdfDictionary.Function:
                Function = value;
                break;

            case PdfDictionary.Params:
                Params = value;
                break;

            case PdfDictionary.Resources:
                Resources = value;
                break;

            case PdfDictionary.Shading:
                Shading = value;
                break;

            case PdfDictionary.SMask:
                SMask = value;
                break;

        }
    }

    public void setID(final int id) {

        this.id = id;

    }

    public int getID() {

        return id;

    }

    /**
     * only used internally for some forms - please do not use
     *
     * @return
     */
    public int getParentID() {
        return parentType;
    }

    /**
     * flag set for embedded data
     */
    public boolean hasStream() {
        return hasStream;
    }

    public int getParameterConstant(final int key) {
        final int def = PdfDictionary.Unknown;

        switch (key) {

            case PdfDictionary.ColorSpace:
                return colorspace;

            case PdfDictionary.Subtype:
                return subtype;

            case PdfDictionary.Type:
                return type;

        }

        return def;
    }

    public int setConstant(final int pdfKeyType, final int keyStart, final int keyLength, final byte[] raw) {

        final int id = PdfObject.getId(keyStart, keyLength, raw);

        return setConstant(pdfKeyType, id);
    }

    public static int getId(final int keyStart, final int keyLength, final byte[] raw) {

        int id = 0, x = 0, next;

        //convert token to unique key which we can lookup
        for (int i2 = keyLength - 1; i2 > -1; i2--) {

            next = raw[keyStart + i2];

            //System.out.println((char)next);
            next -= 48;

            id += ((next) << x);

            x += 8;
        }
        return id;
    }

    /**
     * common values shared between types
     *
     * @param pdfKeyType
     * @param id         The id to set
     * @return the value of PDF
     */
    public int setConstant(final int pdfKeyType, final int id) {
        int PDFvalue = id;

        switch (id) {

            case PdfDictionary.FontDescriptor:
                PDFvalue = PdfDictionary.Font;
                break;

        }

        switch (pdfKeyType) {

            case PdfDictionary.ColorSpace:
                colorspace = PDFvalue;
                break;

            case PdfDictionary.Subtype:
                subtype = PDFvalue;
                break;

            case PdfDictionary.Type:

                this.type = PDFvalue;

                break;
        }

        return PDFvalue;
    }

    public float[] getFloatArray(final int id) {

        final float[] array = null;
        switch (id) {

            case PdfDictionary.ArtBox:
                return deepCopy(ArtBox);

            case PdfDictionary.BBox:
                return deepCopy(BBox);

            case PdfDictionary.BleedBox:
                return deepCopy(BleedBox);

            case PdfDictionary.CropBox:
                return deepCopy(CropBox);

            case PdfDictionary.Decode:
                return deepCopy(Decode);

            case PdfDictionary.Domain:
                return deepCopy(Domain);

            case PdfDictionary.Matrix:
                return deepCopy(Matrix);

            case PdfDictionary.Matte:
                return deepCopy(Matte);

            case PdfDictionary.MediaBox:
                return deepCopy(MediaBox);

            case PdfDictionary.Range:
                return deepCopy(Range);

            case PdfDictionary.TrimBox:
                return deepCopy(TrimBox);

        }

        return deepCopy(array);
    }

    public byte[][] getKeyArray(final int id) {
        return null;
    }

    public double[] getDoubleArray(final int id) {

        return null;
    }

    public boolean[] getBooleanArray(final int id) {
        return null;
    }

    public int[] getIntArray(final int id) {
        return null;
    }

    public void setFloatArray(final int id, final float[] value) {

        switch (id) {

            case PdfDictionary.ArtBox:
                ArtBox = value;
                break;

            case PdfDictionary.BBox:
                BBox = value;
                break;

            case PdfDictionary.BleedBox:
                BleedBox = value;
                break;

            case PdfDictionary.CropBox:
                CropBox = value;
                break;

            case PdfDictionary.Decode:
                Decode = ignoreIdentity(value);
                break;

            case PdfDictionary.Domain:
                Domain = value;
                break;

            case PdfDictionary.Matrix:
                Matrix = value;
                break;

            case PdfDictionary.Matte:
                Matte = value;
                break;

            case PdfDictionary.MediaBox:
                MediaBox = value;
                break;

            case PdfDictionary.Range:
                Range = value;
                break;

            case PdfDictionary.TrimBox:
                TrimBox = value;
                break;

        }

    }

    /**
     * ignore identity value which makes no change
     */
    private static float[] ignoreIdentity(final float[] value) {

        boolean isIdentity = true;
        if (value != null) {

            final int count = value.length;
            for (int aa = 0; aa < count; aa += 2) {
                if (value[aa] == 0f && value[aa + 1] == 1f) {
                    //okay
                } else {
                    isIdentity = false;
                    aa = count;
                }
            }
        }

        if (isIdentity) {
            return null;
        } else {
            return value;
        }
    }

    public void setIntArray(final int id, final int[] value) {

        switch (id) {

            default:

        }

    }

    public void setBooleanArray(final int id, final boolean[] value) {

        switch (id) {

            default:

        }

    }

    public void setDoubleArray(final int id, final double[] value) {

        switch (id) {

            default:

        }

    }


    public void setMixedArray(final int id, final byte[][] value) {

        switch (id) {

            case PdfDictionary.ColorSpace:

                ColorSpaceArray = value;
                break;

            case PdfDictionary.ExtGState:

                ExtGStateArray = value;
                break;

            case PdfDictionary.Filter:

                Filter = value;
                break;

            case PdfDictionary.Font:

                FontArray = value;
                break;

            case PdfDictionary.Function:
                FunctionArray = value;
                break;

            case PdfDictionary.Nums:
                Nums = value;
                break;

            case PdfDictionary.Pattern:

                PatternArray = value;
                break;

            case PdfDictionary.Shading:
                ShadingArray = value;
                break;

            case PdfDictionary.XObject:
                XObjectArray = value;
                break;

        }
    }


    public String getStringValue(final int id, final int mode) {
        return null;

    }

    //return as constant we can check
    public int getNameAsConstant(final int id) {

        switch (id) {

            case PdfDictionary.S:

                if (rawS != null) {
                    return PdfDictionary.generateChecksum(0, rawS.length, rawS);
                } else {
                    return PdfDictionary.Unknown;
                }
            default:

                return PdfDictionary.Unknown;
        }

    }

    public String getName(final int id) {

        final String str = null;
        switch (id) {

            case PdfDictionary.Name:

                //setup first time
                if (Name == null && rawName != null) {
                    Name = new String(rawName);
                }

                return Name;

            case PdfDictionary.S:

                //setup first time
                if (S == null && rawS != null) {
                    S = new String(rawS);
                }

                return S;

        }

        return str;
    }


    public byte[] getRawName(final int id) {

        switch (id) {

            case PdfDictionary.Name:
                return rawName;

            case PdfDictionary.S:
                return rawS;
        }

        return null;
    }

    public String getStringKey(final int id) {

        final String str = null;
        switch (id) {

            case PdfDictionary.Parent:

                //setup first time
                if (Parent == null && rawParent != null) {
                    Parent = new String(rawParent);
                }

                return Parent;
        }

        return str;
    }

    public String getTextStreamValue(final int id) {

        final String str = null;
        switch (id) {

            case PdfDictionary.Creator:

                //setup first time
                if (Creator == null && rawCreator != null) {
                    Creator = StringUtils.getTextString(rawCreator, false);
                }

                return Creator;

            //can also be stream in OCProperties
            case PdfDictionary.Name:

                //setup first time
                if (Name == null && rawName != null) {
                    Name = StringUtils.getTextString(rawName, false);
                }

                return Name;

            case PdfDictionary.Title:

                //setup first time
                if (Title == null && rawTitle != null) {
                    Title = StringUtils.getTextString(rawTitle, false);
                }

                return Title;

        }

        return str;
    }

    public void setName(final int id, final byte[] value) {

        switch (id) {

            case PdfDictionary.Name:
                rawName = value;
                Name = null;
                break;

            case PdfDictionary.S:
                rawS = value;
                break;

            case PdfDictionary.Parent:

                //gets into endless loop if any obj so use sparingly
                if (includeParent) {
                    rawParent = value;
                }

                break;

        }
    }

    public void setStringKey(final int id, final byte[] value) {

        switch (id) {

            case PdfDictionary.Parent:
                rawParent = value;
                break;

        }

    }


    public void setTextStreamValue(final int id, final byte[] value) {

        switch (id) {

            case PdfDictionary.Creator:
                rawCreator = value;
                break;

            case PdfDictionary.Name:
                rawName = value;
                Name = null;
                break;

            case PdfDictionary.Title:
                rawTitle = value;
                break;

        }

    }

    public byte[] getDecodedStream() {

        if (isCached()) {
            byte[] cached = null;

            try {

                final File f = new File(getCachedStreamFile(objReader));
                final BufferedInputStream bis = new BufferedInputStream(new FileInputStream(f));
                cached = new byte[(int) f.length()];

                bis.read(cached);
                bis.close();
                if (objReader.getEncHash() != null) {
                    final CryptoAES aes = new CryptoAES();
                    cached = aes.decrypt(objReader.getEncHash(), cached);
                }

            } catch (final Exception e) {
                LogWriter.writeLog("Exception: " + e.getMessage());
            }

            return cached;
        } else {
            return DecodedStream;
        }
    }

    public void setStream(final byte[] stream) {
        this.stream = stream;

        if (this.getObjectType() == PdfDictionary.ColorSpace) {
            hasStream = true;
        }
    }

    public void setDecodedStream(final byte[] stream) {
        this.DecodedStream = stream;
    }

    public String getObjectRefAsString() {

        if (ref == null) {
            ref = intRef + " " + gen + " R";
        }

        return this.ref;
    }

    public int getObjectRefID() {

        //initialise if not set
        if (intRef == 0 && ref != null && !ref.contains("[")) {

            try {
                final byte[] data = ref.getBytes();

                int j = 0, keyStart;

                //allow for space at start
                while (data[j] == 91 || data[j] == 32 || data[j] == 13 || data[j] == 10) {
                    j++;
                }

                // get object ref
                keyStart = j;

                //move cursor to end of reference
                while (data[j] != 10 && data[j] != 13 && data[j] != 32 && data[j] != 47 && data[j] != 60 && data[j] != 62) {
                    j++;
                }

                intRef = NumberUtils.parseInt(keyStart, j, data);

                //move cursor to start of generation or next value
                while (data[j] == 10 || data[j] == 13 || data[j] == 32)// || data[j]==47 || data[j]==60)
                {
                    j++;
                }

                keyStart = j;
                //move cursor to end of reference
                while (data[j] != 10 && data[j] != 13 && data[j] != 32 && data[j] != 47 && data[j] != 60 && data[j] != 62) {
                    j++;
                }

                gen = NumberUtils.parseInt(keyStart, j, data);

            } catch (final Exception e) {
                LogWriter.writeLog("Exception: " + e.getMessage());
            }
        }

        return intRef;
    }

    public int getObjectRefGeneration() {

        return gen;
    }

    public PdfArrayIterator getMixedArray(final int id) {

        switch (id) {

            case PdfDictionary.ColorSpace:
                return new PdfArrayIterator(ColorSpaceArray);

            case PdfDictionary.ExtGState:
                return new PdfArrayIterator(ExtGStateArray);

            case PdfDictionary.Font:
                return new PdfArrayIterator(FontArray);

            case PdfDictionary.Filter:
                return new PdfArrayIterator(Filter);

            case PdfDictionary.Function:
                return new PdfArrayIterator(FunctionArray);

            case PdfDictionary.Nums:
                return new PdfArrayIterator(Nums);

            case PdfDictionary.Pattern:
                return new PdfArrayIterator(PatternArray);

            case PdfDictionary.Shading:
                return new PdfArrayIterator(ShadingArray);

            case PdfDictionary.XObject:
                return new PdfArrayIterator(XObjectArray);

            default:
                return null;
        }
    }

    public void setDictionaryPairs(final byte[][] keys, final byte[][] values) {

        this.keys = keys;
        this.values = values;

    }

    public PdfKeyPairsIterator getKeyPairsIterator() {
        return new PdfKeyPairsIterator(keys, values);
    }

    public void setKeyArray(final int id, final byte[][] keyValues) {

        switch (id) {

            default:

        }
    }

    public void setStringArray(final int id, final byte[][] keyValues) {

        switch (id) {

            case PdfDictionary.TR:
                TR = keyValues;
                break;

        }
    }


    public byte[][] getStringArray(final int id) {

        switch (id) {

            case PdfDictionary.TR:
                return deepCopy(TR);

        }

        return null;
    }

    public Object[] getObjectArray(final int id) {

        switch (id) {

            case PdfDictionary.DecodeParms:
                return (DecodeParmsAsArray);

        }

        return null;
    }

    public void setObjectArray(final int id, final Object[] objectValues) {

        switch (id) {

            case PdfDictionary.DecodeParms:

                DecodeParmsAsArray = objectValues;
                break;

        }
    }

    public PdfObject duplicate() {

        return new PdfObject();
    }

    public boolean decompressStreamWhenRead() {
        return false;
    }

    public int getObjectType() {
        return objType;
    }

    public int getRawObjectType() {
        return objType;
    }

    public byte[] getStringValueAsByte(final int id) {
        return null;
    }

    public boolean isCompressedStream() {
        return isCompressedStream;
    }

    public void setCompressedStream(final boolean isCompressedStream) {
        this.isCompressedStream = isCompressedStream;
    }

    /**
     * do not cascade down whole tree
     */
    public boolean ignoreRecursion() {
        return ignoreRecursion;
    }

    /**
     * do not cascade down whole tree
     */
    public void ignoreRecursion(final boolean ignoreRecursion) {
        this.ignoreRecursion = ignoreRecursion;
    }

    public byte[] getTextStreamValueAsByte(final int id) {
        return null;
    }

    public byte[][] getByteArray(final int id) {
        // TODO Auto-generated method stub
        return null;
    }

    public void setTextStreamValue(final int id2, final String value) {
        // TODO Auto-generated method stub

    }

    //convenience method to return array as String
    @SuppressWarnings("UnusedDeclaration")
    public String toString(final float[] floatArray, final boolean appendPageNumber) {

        if (floatArray == null) {
            return null;
        }

        final StringBuilder value = new StringBuilder();

        if (appendPageNumber) {
            value.append(pageNumber);
            value.append(' ');
        }

        for (final float aFloatArray : floatArray) {
            value.append(aFloatArray);
            value.append(' ');
        }

        return value.toString();
    }

    /**
     * @return the page this field is associated to
     */
    public int getPageNumber() {
        return pageNumber;
    }

    /**
     * set the page number for this form
     */
    public void setPageNumber(final int number) {

        pageNumber = number;
    }


    public void setCache(final PdfFileReader objReader) {
        this.startStreamOnDisk = objReader.getOffset(getObjectRefID());
        this.objReader = objReader;
    }

    public boolean isCached() {

        return startStreamOnDisk != -1;
    }

    public String getCachedStreamFile(final PdfFileReader objReader) {

        final File tmpFile;

        if (startStreamOnDisk != -1) { //cached so we need to read it

            try {

                tmpFile = File.createTempFile("jpedal-", ".bin", new File(ObjectStore.temp_dir));
                
                /*
                 * we use Length if available
                 */
                final int length = this.getInt(PdfDictionary.Length);

                if (length == -1) {
                    objReader.spoolStreamDataToDisk(tmpFile, startStreamOnDisk);
                } else {
                    objReader.spoolStreamDataToDisk(tmpFile, startStreamOnDisk, length);
                }

                //set name for access
                cacheName = tmpFile.getAbsolutePath();

                //System.out.println("cached file size="+tmpFile.length()+" "+this.getObjectRefAsString());
            } catch (final Exception e) {
                LogWriter.writeLog("Exception: " + e.getMessage());
            }
        }

        //decrypt and decompress
        if (getObjectType() != PdfDictionary.XObject) {
            objReader.readStream(this, true, true, false, getObjectType() == PdfDictionary.Metadata, isCompressedStream, cacheName);
        }

        return cacheName;
    }

    public void setInCompressedStream(final boolean isInCompressedStream) {

        this.isInCompressedStream = isInCompressedStream;
    }

    public boolean isInCompressedStream() {
        return isInCompressedStream;
    }

    //use in colorpsace to get ref correct
    public void maybeIndirect(final boolean b) {
        maybeIndirect = b;
    }

    //use in colorpsace to get ref correct
    public boolean maybeIndirect() {
        return maybeIndirect;
    }

    public boolean isFullyResolved() {
        return isFullyResolved;
    }

    public void setFullyResolved(final boolean isFullyResolved) {
        this.isFullyResolved = isFullyResolved;
    }

    public boolean isDataExternal() {
        return isDataExternal;
    }

    public void isDataExternal(final boolean isDataExternal) {
        this.isDataExternal = isDataExternal;
    }

    public boolean ignoreStream() {

        return ignoreStream;
    }

    public void ignoreStream(final boolean ignoreStream) {

        this.ignoreStream = ignoreStream;
    }

    public void setStreamMayBeCorrupt(final boolean streamMayBeCorrupt) {
        this.streamMayBeCorrupt = streamMayBeCorrupt;
    }

    public boolean streamMayBeCorrupt() {
        return streamMayBeCorrupt;
    }

    /**
     * move across and reset in pdfObject
     *
     * @param pdfObject
     */
    public void moveCacheValues(final PdfObject pdfObject) {

        startStreamOnDisk = pdfObject.startStreamOnDisk;
        pdfObject.startStreamOnDisk = -1;

        this.cacheName = pdfObject.cacheName;
        pdfObject.cacheName = null;
    }

    public void setClip(final Shape clip) {
        this.clip = clip;
    }

    public Shape getClip() {
        return clip;
    }


    public byte[] getConvertedData() {
        return convertedData;
    }

    public void setConvertedData(final byte[] convertedData) {
        this.convertedData = convertedData;
    }
}




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