Example usage for com.lowagie.text.pdf PdfReader getMetadata

Introduction

In this page you can find the example usage for com.lowagie.text.pdf PdfReader getMetadata.

Prototype

public byte[] getMetadata() throws IOException 

Source Link

Document

Gets the XML metadata.

Usage

From source file:org.alchemy.core.AlcSession.java

License:Open Source License

/** Adds a pdfReadPage to an existing pdf file
 * /*  www.j  av  a 2s . c  om*/
 * @param mainPdf   The main pdf with multiple pages.
 *                  Also used as the destination file.
 * @param tempPdf   The 'new' pdf with one pdfReadPage to be added to the main pdf
 * @return
 */
boolean addPageToPdf(File mainPdf, File tempPdf) {
    try {
        // Destination file created in the temp dir then we will move it
        File dest = new File(DIR_TEMP, "Alchemy.pdf");
        OutputStream output = new FileOutputStream(dest);

        PdfReader reader = new PdfReader(mainPdf.getPath());
        PdfReader newPdf = new PdfReader(tempPdf.getPath());

        // See if the size of the canvas has increased
        // Size of the most recent temp PDF
        com.lowagie.text.Rectangle currentSize = newPdf.getPageSizeWithRotation(1);
        // Size of the session pdf at present
        com.lowagie.text.Rectangle oldSize = reader.getPageSizeWithRotation(1);
        // Sizes to be used from now on
        float pdfWidth = oldSize.getWidth();
        float pdfHeight = oldSize.getHeight();
        if (currentSize.getWidth() > pdfWidth) {
            pdfWidth = currentSize.getWidth();
        }
        if (currentSize.getHeight() > pdfHeight) {
            pdfHeight = currentSize.getHeight();
        }

        // Use the new bigger canvas size if required
        com.lowagie.text.Document document = new com.lowagie.text.Document(
                new com.lowagie.text.Rectangle(pdfWidth, pdfHeight), 0, 0, 0, 0);
        PdfCopy copy = new PdfCopy(document, output);

        // Copy the meta data
        document.addTitle("Alchemy Session");
        document.addAuthor(USER_NAME);
        document.addCreator("Alchemy <http://al.chemy.org>");
        copy.setXmpMetadata(reader.getMetadata());
        document.open();

        // Holds the PDF
        PdfContentByte cb = copy.getDirectContent();

        // Add each page from the main PDF
        for (int i = 0; i < reader.getNumberOfPages();) {
            ++i;
            document.newPage();
            cb.setDefaultColorspace(PdfName.CS, PdfName.DEVICERGB);
            PdfImportedPage page = copy.getImportedPage(reader, i);
            copy.addPage(page);
        }
        // Add the last (new) page
        document.newPage();
        PdfImportedPage lastPage = copy.getImportedPage(newPdf, 1);
        copy.addPage(lastPage);
        output.flush();
        document.close();
        output.close();

        if (dest.exists()) {
            // Save the location of the main pdf
            String mainPdfPath = mainPdf.getPath();
            // Delete the old file
            if (mainPdf.exists()) {
                mainPdf.delete();
            }
            // The final joined up pdf file
            File joinPdf = new File(mainPdfPath);
            // Rename the file
            boolean success = dest.renameTo(joinPdf);
            if (!success) {
                System.err.println("Error moving Pdf");
                return false;
            }

        } else {
            System.err.println("File does not exist?!: " + dest.getAbsolutePath());
            return false;
        }
        return true;

    } catch (Exception e) {
        e.printStackTrace();
        return false;
    }
}

---

From source file:org.alchemy.core.AlcSession.java

License:Open Source License

/** Load a session file to draw on top of */
boolean loadSessionFile(File file) {

    try {//  w  w  w  .  jav a  2s .c o m

        // Check this is a pdf file
        String mime = MimeUtil.getMimeType(file.getAbsoluteFile());
        if (!mime.equals("application/pdf")) {
            AlcUtil.showConfirmDialogFromBundle("notPDFDialogTitle", "notPDFDialogMessage");
            return false;
        }

        // First make sure we are not loading the current session file
        if (file.equals(pdfWriteFile)) {

            boolean result = AlcUtil.showConfirmDialogFromBundle("loadSessionPDFDialogTitle",
                    "loadSessionPDFDialogMessage");

            if (result) {
                restartSession();
            } else {
                return false;
            }

        }

        // Secondly check the meta data to see if this is an Alchemy session
        PdfReader reader = new PdfReader(file.getPath());
        String metaData = new String(reader.getMetadata());

        // If the pdf is not an Alchemy pdf
        if (!metaData.contains("Alchemy") && !file.getName().startsWith("Alchemy")) {

            boolean result = AlcUtil.showConfirmDialogFromBundle("loadForeignPDFDialogTitle",
                    "loadForeignPDFDialogMessage");
            if (!result) {
                return false;
            }
        }

        // set up the PDF reading
        RandomAccessFile raf = new RandomAccessFile(file, "r");
        FileChannel channel = raf.getChannel();
        ByteBuffer buf = channel.map(FileChannel.MapMode.READ_ONLY, 0, channel.size());
        pdfReadFile = new PDFFile(buf);
        currentPdfReadPage = 1;
        maxPdfReadPage = pdfReadFile.getNumPages();
        pdfReadPage = pdfReadFile.getPage(currentPdfReadPage);
        Alchemy.canvas.redraw(true);
        return true;

    } catch (FileNotFoundException ex) {
        ex.printStackTrace();
    } catch (IOException ex) {
        ex.printStackTrace();
    }
    return false;
}

---

From source file:pdflicense.PdfLicenseManager.java

License:Open Source License

/**
 * Update the XMP info with the insertion of a CC licence
 * /*  w  ww.  j av a2  s  . c om*/
 * @param args input pdf file, output pdf file, xmp file
 */
public void mainTextual(String[] args) {

    if (args.length < 2) {
        usage();
        System.exit(1);
    } else {
        op = args[0];
        if (op.equals("show") || op.equals("showXMP") || op.equals("showToc")) {
            if (args.length != 2) {
                System.out.print("\n\nERROR: incorrect number of parameters");
                usage();
                System.exit(1);
            }
            fNameIn = args[1];
        } else if (op.equals("put") || op.equals("putXMP") || op.equals("putforce")) {
            if (args.length != 4) {
                System.out.print("\n\nERROR: incorrect number of parameters");
                usage();
                System.exit(1);
            }
            fNameIn = args[1];
            fNameOut = args[2];
            licenseShortName = args[3];
        } else {
            System.out.print("ERROR: operation not known (" + op + ")\n\n");
            usage();
            System.exit(1);
        }
    }

    try {
        PdfReader reader = new PdfReader(fNameIn);
        XmpManager xm = new XmpManager();
        byte[] xmpdata = reader.getMetadata();

        if (op.equals("showXMP") || op.equals("show")) {
            if (xmpdata == null) {
                System.out.print("No XMP Licensing info is present\n");
            } else {
                if (op.equals("showXMP")) {
                    String s = new String(xmpdata);
                    System.out.print(s);
                } else if (op.equals("show")) {
                    String s = new String(xmpdata);
                    xm.parseXmp(s);
                    //System.out.println(xm.getXmpString());
                    License currLic = xm.getLicenseInfo();
                    System.out.print("***************************\n");
                    System.out.print("XMP Licensing info:\n");
                    System.out.print("***************************\n");
                    System.out.print(currLic.toString());
                    System.out.print("\n");
                }
            }
        } else if (op.equals("showToc")) {
            PdfDictionary cat = reader.getCatalog();
            Set k = cat.getKeys();
            Object[] arr = k.toArray();
            for (int i = 0; i < arr.length; i++) {
                System.out.println(arr[i]);
            }
            //PdfObject p = cat.get(PdfName.METADATA);
            //System.out.println(p.getName());
            //System.out.println("/Metadata type="+p.type());

            //PRIndirectReference iref = (PRIndirectReference)p;
            //findAllObjects(reader, PdfReader.getPdfObject(obj), hits);

            /*
            HashMap map = reader.getInfo();
            Set keys = map.keySet();   
            Object []arr = keys.toArray();
            for (int i=0; i<arr.length; i++) {
               System.out.println(arr[i]);
            }
            */
        } else if (op.equals("put")) {
            CCLicense lic = new CCLicense(licenseShortName);
            if (xmpdata == null) {
                xm.createLicense(lic);
            } else {
                String s = new String(xmpdata);
                xm.parseXmp(s);
                xm.updateLicense(lic);
            }
            String xmpString = xm.getXmpString();
            FileOutputStream fos = new FileOutputStream(fNameOut);
            writeXmp(reader, fos, xmpString.getBytes());
        } else if (op.equals("putforce")) {
            CCLicense lic = new CCLicense(licenseShortName);
            xm.createLicense(lic);
            String xmpString = xm.getXmpString();
            FileOutputStream fos = new FileOutputStream(fNameOut);
            writeXmp(reader, fos, xmpString.getBytes());
        } else if (op.equals("putXMP")) {
            File f = new File(licenseShortName);
            int length = (int) f.length();
            FileInputStream fin = new FileInputStream(f);
            BufferedInputStream data = new BufferedInputStream(fin);
            byte[] xmp = new byte[length];
            data.read(xmp, 0, length);
            fin.close();

            FileOutputStream fos = new FileOutputStream(fNameOut);
            writeXmp(reader, fos, xmp);
        }
    } catch (DocumentException de) {
        System.err.println(de.getMessage());
    } catch (IOException ioe) {
        System.err.println(ioe.getMessage());
    } catch (LicenseException e) {
        System.err.println(e.getMessage());
    }

}

---

From source file:questions.metadata.ReplaceXMP.java

public static void alterXmp2() {
    try {/*from w  w w  .  ja v a  2s . c o  m*/
        PdfReader reader = new PdfReader(ORIGINAL);
        String metadata = new String(reader.getMetadata());
        metadata = metadata.replaceAll("Hello World", "Hello Universe");
        PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(RESULT2));
        stamper.setXmpMetadata(metadata.getBytes());
        stamper.close();
    } catch (IOException e) {
        e.printStackTrace();
    } catch (DocumentException e) {
        e.printStackTrace();
    }
}

---