Package org.apache.pdfbox.cos

Examples of org.apache.pdfbox.cos.COSStream

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     * @throws IOException if an I/O error occurs
     */
    public void wrapInSaveRestore(PDPage page) throws IOException
    {
        COSDictionary saveGraphicsStateDic = new COSDictionary();
        COSStream saveGraphicsStateStream = getDocument().getDocument().createCOSStream(saveGraphicsStateDic);
        OutputStream saveStream = saveGraphicsStateStream.createUnfilteredStream();
        saveStream.write("q\n".getBytes("ISO-8859-1"));
        saveStream.flush();

        COSStream restoreGraphicsStateStream = getDocument().getDocument().createCOSStream(saveGraphicsStateDic);
        OutputStream restoreStream = restoreGraphicsStateStream.createUnfilteredStream();
        restoreStream.write("Q\n".getBytes("ISO-8859-1"));
        restoreStream.flush();

        //Wrap the existing page's content in a save/restore pair (q/Q) to have a controlled
        //environment to add additional content.
        COSDictionary pageDictionary = page.getCOSObject();
        COSBase contents = pageDictionary.getDictionaryObject(COSName.CONTENTS);
        if (contents instanceof COSStream)
        {
            COSStream contentsStream = (COSStream)contents;

            COSArray array = new COSArray();
            array.add(saveGraphicsStateStream);
            array.add(contentsStream);
            array.add(restoreGraphicsStateStream);
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     * @return a Form XObject containing the original page's content
     * @throws IOException if an I/O error occurs
     */
    public PDFormXObject importPageAsForm(PDDocument sourceDoc, PDPage page) throws IOException
    {
        COSStream pageStream = (COSStream)page.getStream().getCOSObject();
        PDStream newStream = new PDStream(targetDoc,
                pageStream.getUnfilteredStream(), false);
        PDFormXObject form = new PDFormXObject(newStream);

        //Copy resources
        PDResources pageRes = page.getResources();
        PDResources formRes = new PDResources();
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                COSBase xobj = entry.getValue();
                if (xobj != null && COSUtils.isStream(xobj, cosDocument))
                {
                    try
                    {
                        COSStream stream = COSUtils.getAsStream(xobj, cosDocument);
                        PDXObject pdXObject = PDXObject.createXObject(stream, entry.getKey().getName(), resources);
                        if (pdXObject != null)
                        {
                            ContextHelper.validateElement(context, pdXObject, GRAPHIC_PROCESS);
                        }
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            PDStream fontFile = fd.getFontFile();
            if (fontFile != null)
            {
                try
                {
                    COSStream stream = fontFile.getStream();
                    int length1 = stream.getInt(COSName.LENGTH1);
                    int length2 = stream.getInt(COSName.LENGTH2);

                    // repair Length1 if necessary
                    byte[] bytes = fontFile.getByteArray();
                    length1 = repairLength1(bytes, length1);
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     * @return The embedded file for this file spec.
     */
    public PDEmbeddedFile getEmbeddedFile()
    {
        PDEmbeddedFile file = null;
        COSStream stream = (COSStream)getObjectFromEFDictionary(COSName.F);
        if( stream != null )
        {
            file = new PDEmbeddedFile( stream );
        }
        return file;
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     * @return The embedded dos file for this file spec.
     */
    public PDEmbeddedFile getEmbeddedFileDos()
    {
        PDEmbeddedFile file = null;
        COSStream stream = (COSStream)getObjectFromEFDictionary( COSName.DOS );
        if( stream != null )
        {
            file = new PDEmbeddedFile( stream );
        }
        return file;
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     * @return The embedded Mac file for this file spec.
     */
    public PDEmbeddedFile getEmbeddedFileMac()
    {
        PDEmbeddedFile file = null;
        COSStream stream = (COSStream)getObjectFromEFDictionary( COSName.MAC );
        if( stream != null )
        {
            file = new PDEmbeddedFile( stream );
        }
        return file;
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     * @return The embedded file for this file spec.
     */
    public PDEmbeddedFile getEmbeddedFileUnix()
    {
        PDEmbeddedFile file = null;
        COSStream stream = (COSStream)getObjectFromEFDictionary( COSName.UNIX );
        if( stream != null )
        {
            file = new PDEmbeddedFile( stream );
        }
        return file;
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     * @return The embedded unicode file for this file spec.
     */
    public PDEmbeddedFile getEmbeddedFileUnicode()
    {
        PDEmbeddedFile file = null;
        COSStream stream = (COSStream)getObjectFromEFDictionary( COSName.UF );
        if( stream != null )
        {
            file = new PDEmbeddedFile( stream );
        }
        return file;
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        ArrayList<BufferedImage> srcImgTab = new ArrayList<BufferedImage>();
        ArrayList<ByteArrayOutputStream> srcContentStreamTab = new ArrayList<ByteArrayOutputStream>();
        for (int i = 0; i < numSrcPages; ++i)
        {
            srcImgTab.add(pdfRenderer.renderImage(i));
            COSStream contentStream = document.getPage(i).getContentStream();
            InputStream unfilteredStream = contentStream.getUnfilteredStream();
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            IOUtils.copy(unfilteredStream, baos);
            unfilteredStream.close();
            srcContentStreamTab.add(baos);
        }

        PDDocument encryptedDoc = encrypt(keyLength, sizePriorToEncr, document,
                prefix, permission, nonSeq, userpassword, ownerpassword);

        Assert.assertEquals(numSrcPages, encryptedDoc.getNumberOfPages());
        pdfRenderer = new PDFRenderer(encryptedDoc);
        for (int i = 0; i < encryptedDoc.getNumberOfPages(); ++i)
        {
            // compare rendering
            BufferedImage bim = pdfRenderer.renderImage(i);
            ValidateXImage.checkIdent(bim, srcImgTab.get(i));

            // compare content streams
            COSStream contentStreamDecr = encryptedDoc.getPage(i).getContentStream();
            InputStream unfilteredStream = contentStreamDecr.getUnfilteredStream();
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            IOUtils.copy(unfilteredStream, baos);
            unfilteredStream.close();
            Assert.assertArrayEquals("content stream of page " + i + " not identical",
                    srcContentStreamTab.get(i).toByteArray(),
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Related Classes of org.apache.pdfbox.cos.COSStream

  • de.pdf_scrutinizer.exposures.CVE_2009_0658
  • net.timendum.pdf.Images2HTML
  • org.apache.padaf.preflight.ExtractStream
  • org.apache.padaf.preflight.font.CompositeFontValidator
  • org.apache.padaf.preflight.font.TrueTypeFontValidator
  • org.apache.padaf.preflight.font.Type1FontValidator
  • org.apache.padaf.preflight.font.Type3FontValidator
  • org.apache.padaf.preflight.helpers.GraphicsValidationHelper
  • org.apache.padaf.preflight.helpers.StreamValidationHelper
  • org.apache.padaf.preflight.utils.TestCOSUtils
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