Package org.apache.pdfbox.persistence.util

Examples of org.apache.pdfbox.persistence.util.COSObjectKey


            char r = (char)pdfSource.read();
            if( r != 'R' )
            {
                throw new IOException( "expected='R' actual='" + r + "' " + pdfSource );
            }
            COSObjectKey key = new COSObjectKey(((COSInteger) number).intValue(),
                    ((COSInteger) generationNumber).intValue());
            retval = document.getObjectFromPool(key);
        }
        else
        {
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                {
                    COSInteger genNumber = (COSInteger)po.remove( po.size() -1 );
                    if (po.get(po.size()-1) instanceof COSInteger)
                    {
                        COSInteger number = (COSInteger)po.remove( po.size() -1 );
                        COSObjectKey key = new COSObjectKey(number.intValue(), genNumber.intValue());
                        pbo = document.getObjectFromPool(key);
                    }
                    else
                    {
                        // the object reference is somehow wrong
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                        int genNum = 0;
                        for(int i = 0; i < w2; i++)
                        {
                            genNum += (currLine[i + w0 + w1] & 0x00ff) << ((w2 - i - 1) * 8);
                        }
                        COSObjectKey objKey = new COSObjectKey(objID.intValue(), genNum);
                        document.setXRef(objKey, offset);
                        break;
                    case 2:
                        /*
                         * These objects are handled by the dereferenceObjects() method
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        COSBase actual = obj;
        if( actual instanceof COSObject )
        {
            actual = ((COSObject)obj).getObject();
        }
        COSObjectKey key = null;
        if( actual != null )
        {
            key = (COSObjectKey)objectKeys.get(actual);
        }
        if( key == null )
        {
            key = (COSObjectKey)objectKeys.get(obj);
        }
        if (key == null)
        {
            setNumber(getNumber()+1);
            key = new COSObjectKey(getNumber(),0);
            objectKeys.put(obj, key);
            if( actual != null )
            {
                objectKeys.put(actual, key);
            }
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     */
    public void writeReference(COSBase obj) throws COSVisitorException
    {
        try
        {
            COSObjectKey  key = getObjectKey(obj);
            getStandardOutput().write(String.valueOf(key.getNumber()).getBytes());
            getStandardOutput().write(SPACE);
            getStandardOutput().write(String.valueOf(key.getGeneration()).getBytes());
            getStandardOutput().write(SPACE);
            getStandardOutput().write(REFERENCE);
        }
        catch (IOException e)
        {
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     * @param generation the generation of this object you wish to load
     * @return The object in the pool
     * @throws IOException If there is an error getting the proxy object.
     */
    public COSBase getObjectFromPool(long number, long generation) throws IOException {
        return objectPool.get(new COSObjectKey(number, generation));
    }
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    public COSBase getObjectFromPool(long number, long generation) throws IOException {
        return objectPool.get(new COSObjectKey(number, generation));
    }

    public void putObjectInPool(COSBase object, long number, long generation) {
        objectPool.put(new COSObjectKey(number, generation), object);
    }
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            for(COSObject objStream : doc.getDocument().getObjectsByType(COSName.OBJ_STM)) {
                COSStream stream = (COSStream)objStream.getObject();
                PDFObjectStreamParser sp = new PDFObjectStreamParser(stream, doc.getDocument());
                sp.parse();
                for(COSObject next : sp.getObjects()) {
                    COSObjectKey key = new COSObjectKey(next);
                    COSObject obj = doc.getDocument().getObjectFromPool(key);
                    obj.setObject(next.getObject());
                }
                doc.getDocument().removeObject(new COSObjectKey(objStream));
            }
            doc.save(outputFilename);
        } catch(Exception e) {
            System.out.println("Error processing file: " + e.getMessage());
        } finally {
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                {
                    try
                    {
                        long currOffset = Long.parseLong(splitString[0]);
                        int currGenID = Integer.parseInt(splitString[1]);
                        COSObjectKey objKey = new COSObjectKey(currObjID, currGenID);
                        xrefTrailerResolver.setXRef(objKey, currOffset);
                    }
                    catch (NumberFormatException e)
                    {
                        addValidationError(new ValidationError(PreflightConstants.ERROR_SYNTAX_CROSS_REF,
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    @Override
    protected COSBase parseObjectDynamically(int objNr, int objGenNr, boolean requireExistingNotCompressedObj)
            throws IOException
    {
        // ---- create object key and get object (container) from pool
        final COSObjectKey objKey = new COSObjectKey(objNr, objGenNr);
        final COSObject pdfObject = document.getObjectFromPool(objKey);

        if (pdfObject.getObject() == null)
        {
            // not previously parsed
            // ---- read offset or object stream object number from xref table
            Long offsetOrObjstmObNr = xrefTrailerResolver.getXrefTable().get(objKey);

            // sanity test to circumvent loops with broken documents
            if (requireExistingNotCompressedObj && ((offsetOrObjstmObNr == null)))
            {
                addValidationError(new ValidationError(ERROR_SYNTAX_MISSING_OFFSET,
                        "Object must be defined and must not be compressed object: " + objKey.getNumber() + ":"
                                + objKey.getGeneration()));
                throw new SyntaxValidationException("Object must be defined and must not be compressed object: "
                        + objKey.getNumber() + ":" + objKey.getGeneration(), validationResult);
            }

            if (offsetOrObjstmObNr == null)
            {
                // not defined object -> NULL object (Spec. 1.7, chap. 3.2.9)
                pdfObject.setObject(COSNull.NULL);
            }
            else if (offsetOrObjstmObNr == 0)
            {
                addValidationError(new ValidationError(ERROR_SYNTAX_INVALID_OFFSET, "Object {" + objKey.getNumber()
                        + ":" + objKey.getGeneration() + "} has an offset of 0"));
            }
            else if (offsetOrObjstmObNr > 0)
            {
                // offset of indirect object in file
                // ---- go to object start
                setPdfSource(offsetOrObjstmObNr);
                // ---- we must have an indirect object
                long readObjNr = 0;
                int readObjGen = 0;

                long offset = pdfSource.getOffset();
                String line = readLine();
                Pattern pattern = Pattern.compile("(\\d+)\\s(\\d+)\\sobj");
                Matcher matcher = pattern.matcher(line);
                if (matcher.matches())
                {
                    readObjNr = Integer.parseInt(matcher.group(1));
                    readObjGen = Integer.parseInt(matcher.group(2));
                }
                else
                {

                    addValidationError(new ValidationError(ERROR_SYNTAX_OBJ_DELIMITER, "Single space expected [offset="+offset+"; key="+offsetOrObjstmObNr.toString()+"; line="+line+"; object="+pdfObject.toString()+"]"));

                    // reset pdfSource cursor to read object information
                    pdfSource.seek(offset);
                    readObjNr = readObjectNumber();
                    readObjGen = readGenerationNumber();
                    skipSpaces(); // skip spaces between Object Generation number and the 'obj' keyword
                    for (char c : OBJ_MARKER)
                    {
                        if (pdfSource.read() != c)
                        {
                            addValidationError(new ValidationError(ERROR_SYNTAX_OBJ_DELIMITER, "Expected pattern '"
                                    + new String(OBJ_MARKER) + " but missed at character '" + c + "'"));
                            throw new SyntaxValidationException("Expected pattern '" + new String(OBJ_MARKER)
                                    + " but missed at character '" + c + "'", validationResult);
                        }
                    }
                }

                // ---- consistency check
                if ((readObjNr != objKey.getNumber()) || (readObjGen != objKey.getGeneration()))
                {
                    throw new IOException("XREF for " + objKey.getNumber() + ":" + objKey.getGeneration()
                            + " points to wrong object: " + readObjNr + ":" + readObjGen);
                }

                skipSpaces();
                COSBase pb = parseDirObject();
                skipSpaces();
                long endObjectOffset = pdfSource.getOffset();
                String endObjectKey = readString();

                if (endObjectKey.equals("stream"))
                {
                    pdfSource.seek(endObjectOffset);
                    if (pb instanceof COSDictionary)
                    {
                        COSStream stream = parseCOSStream((COSDictionary) pb);
                        if (securityHandler != null)
                        {
                            securityHandler.decryptStream(stream, objNr, objGenNr);
                        }
                        pb = stream;
                    }
                    else
                    {
                        // this is not legal
                        // the combination of a dict and the stream/endstream forms a complete stream object
                        throw new IOException("Stream not preceded by dictionary (offset: " + offsetOrObjstmObNr + ").");
                    }
                    skipSpaces();
                    endObjectOffset = pdfSource.getOffset();
                    endObjectKey = readString();

                    // we have case with a second 'endstream' before endobj
                    if (!endObjectKey.startsWith("endobj"))
                    {
                        if (endObjectKey.startsWith("endstream"))
                        {
                            endObjectKey = endObjectKey.substring(9).trim();
                            if (endObjectKey.length() == 0)
                            {
                                // no other characters in extra endstream line
                                endObjectKey = readString(); // read next line
                            }
                        }
                    }
                }
                else if (securityHandler != null)
                {
                    // decrypt
                    if (pb instanceof COSString)
                    {
                        decrypt((COSString) pb, objNr, objGenNr);
                    }
                    else if (pb instanceof COSDictionary)
                    {
                        for (Entry<COSName, COSBase> entry : ((COSDictionary) pb).entrySet())
                        {
                            // TODO: specially handle 'Contents' entry of signature dictionary like in
                            // SecurityHandler#decryptDictionary
                            if (entry.getValue() instanceof COSString)
                            {
                                decrypt((COSString) entry.getValue(), objNr, objGenNr);
                            }
                        }
                    }
                    else if (pb instanceof COSArray)
                    {
                        final COSArray array = (COSArray) pb;
                        for (int aIdx = 0, len = array.size(); aIdx < len; aIdx++)
                        {
                            if (array.get(aIdx) instanceof COSString)
                            {
                                decrypt((COSString) array.get(aIdx), objNr, objGenNr);
                            }
                        }
                    }
                }

                pdfObject.setObject(pb);

                if (!endObjectKey.startsWith("endobj"))
                {
                    throw new IOException("Object (" + readObjNr + ":" + readObjGen + ") at offset "
                            + offsetOrObjstmObNr + " does not end with 'endobj'.");
                }
                else
                {
                    offset = pdfSource.getOffset();
                    pdfSource.seek(endObjectOffset - 1);
                    if (!nextIsEOL())
                    {
                        addValidationError(new ValidationError(PreflightConstants.ERROR_SYNTAX_OBJ_DELIMITER,
                                "EOL expected before the 'endobj' keyword at offset "+pdfSource.getOffset()));
                    }
                    pdfSource.seek(offset);
                }

                if (!nextIsEOL())
                {
                    addValidationError(new ValidationError(PreflightConstants.ERROR_SYNTAX_OBJ_DELIMITER,
                            "EOL expected after the 'endobj' keyword at offset "+pdfSource.getOffset()));
                }

                releasePdfSourceInputStream();
            }
            else
            {
                // xref value is object nr of object stream containing object to be parsed;
                // since our object was not found it means object stream was not parsed so far
                final int objstmObjNr = (int) (-offsetOrObjstmObNr);
                final COSBase objstmBaseObj = parseObjectDynamically(objstmObjNr, 0, true);
                if (objstmBaseObj instanceof COSStream)
                {
                    // parse object stream
                    PDFObjectStreamParser parser = new PDFObjectStreamParser((COSStream) objstmBaseObj, document,
                            forceParsing);
                    parser.parse();

                    // get set of object numbers referenced for this object stream
                    final Set<Long> refObjNrs = xrefTrailerResolver.getContainedObjectNumbers(objstmObjNr);

                    // register all objects which are referenced to be contained in object stream
                    for (COSObject next : parser.getObjects())
                    {
                        COSObjectKey stmObjKey = new COSObjectKey(next);
                        if (refObjNrs.contains(stmObjKey.getNumber()))
                        {
                            COSObject stmObj = document.getObjectFromPool(stmObjKey);
                            stmObj.setObject(next.getObject());
                        }
                    }
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