Example usage for com.itextpdf.text.io RandomAccessSourceFactory createBestSource

Introduction

In this page you can find the example usage for com.itextpdf.text.io RandomAccessSourceFactory createBestSource.

Prototype

public RandomAccessSource createBestSource(FileChannel channel) throws IOException 

Source Link

Document

Creates a RandomAccessSource based on memory mapping a file channel.

Usage

From source file:com.betel.flowers.pdf.util.RemoveBlankPageFromPDF.java

public static void removeBlankPdfPages(String source, String destination)
        throws IOException, DocumentException {
    PdfReader r = null;/*from  w ww  .  j av a2s .c  om*/
    RandomAccessSourceFactory rasf = null;
    RandomAccessFileOrArray raf = null;
    Document document = null;
    PdfCopy writer = null;

    try {
        r = new PdfReader(source);
        // deprecated
        //    RandomAccessFileOrArray raf
        //           = new RandomAccessFileOrArray(pdfSourceFile);
        // itext 5.4.1
        rasf = new RandomAccessSourceFactory();
        raf = new RandomAccessFileOrArray(rasf.createBestSource(source));
        document = new Document(r.getPageSizeWithRotation(1));
        writer = new PdfCopy(document, new FileOutputStream(destination));
        document.open();
        PdfImportedPage page = null;

        for (int i = 1; i <= r.getNumberOfPages(); i++) {
            // first check, examine the resource dictionary for /Font or
            // /XObject keys.  If either are present -> not blank.
            PdfDictionary pageDict = r.getPageN(i);
            PdfDictionary resDict = (PdfDictionary) pageDict.get(PdfName.RESOURCES);
            boolean noFontsOrImages = true;
            if (resDict != null) {
                noFontsOrImages = resDict.get(PdfName.FONT) == null && resDict.get(PdfName.XOBJECT) == null;
            }

            if (!noFontsOrImages) {
                byte bContent[] = r.getPageContent(i, raf);
                ByteArrayOutputStream bs = new ByteArrayOutputStream();
                bs.write(bContent);

                if (bs.size() > BLANK_THRESHOLD) {
                    page = writer.getImportedPage(r, i);
                    writer.addPage(page);
                }
            }
        }
    } finally {
        if (document != null) {
            document.close();
        }
        if (writer != null) {
            writer.close();
        }
        if (raf != null) {
            raf.close();
        }
        if (r != null) {
            r.close();
        }
    }
}

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From source file:com.vectorprint.report.itext.DefaultElementProducer.java

License:Open Source License

@Override
public void loadPdf(File pdf, PdfWriter writer, byte[] password, ImageProcessor imageProcessor, int... pages)
        throws VectorPrintException {
    RandomAccessFileOrArray ra = null;//from   w  ww .  j  a  v  a 2  s  .c  o m
    try {
        RandomAccessSourceFactory rasf = new RandomAccessSourceFactory();
        ra = new RandomAccessFileOrArray(rasf.createBestSource(pdf.getPath()));
        PdfReader reader = new PdfReader(ra, password);
        if (pages == null) {
            for (int i = 0; i < reader.getNumberOfPages();) {
                imageProcessor.processImage(Image.getInstance(writer.getImportedPage(reader, ++i)));
                writer.freeReader(reader);
            }
        } else {
            for (int i : pages) {
                imageProcessor.processImage(Image.getInstance(writer.getImportedPage(reader, i)));
                writer.freeReader(reader);
            }
        }
    } catch (BadElementException | IOException ex) {
        throw new VectorPrintException(String.format("unable to load image %s", pdf.toString()), ex);
    } finally {
        if (ra != null) {
            try {
                ra.close();
            } catch (IOException ex) {
            }
        }
    }
}

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From source file:com.vectorprint.report.itext.DefaultElementProducer.java

License:Open Source License

@Override
public void loadTiff(File tiff, ImageProcessor imageProcessor, int... pages) throws VectorPrintException {
    RandomAccessFileOrArray ra = null;//  w  w w. java  2 s .  c  o  m
    try {
        RandomAccessSourceFactory rasf = new RandomAccessSourceFactory();
        ra = new RandomAccessFileOrArray(rasf.createBestSource(tiff.getPath()));
        if (pages == null) {
            for (int i = 0; i < TiffImage.getNumberOfPages(ra);) {
                imageProcessor.processImage(TiffImage.getTiffImage(ra, ++i));
            }
        } else {
            for (int i : pages) {
                imageProcessor.processImage(TiffImage.getTiffImage(ra, i));
            }
        }

    } catch (IOException ex) {
        throw new VectorPrintException(String.format("unable to load tiff %s", tiff.toString()), ex);
    } finally {
        if (ra != null) {
            try {
                ra.close();
            } catch (IOException ex) {
            }
        }
    }

}

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From source file:spntoolsdata.pdf.util.RemoveBlankPageFromPDF.java

public static void removeBlankPdfPages(String source, String destination)
        throws IOException, DocumentException {
    PdfReader r = null;/*  w  w  w.  ja  v a2  s  . co m*/
    RandomAccessSourceFactory rasf = null;
    RandomAccessFileOrArray raf = null;
    Document document = null;
    PdfCopy writer = null;

    try {
        r = new PdfReader(source);
        // deprecated
        //    RandomAccessFileOrArray raf
        //           = new RandomAccessFileOrArray(pdfSourceFile);
        // itext 5.4.1
        rasf = new RandomAccessSourceFactory();
        raf = new RandomAccessFileOrArray(rasf.createBestSource(source));
        document = new Document(r.getPageSizeWithRotation(1));
        writer = new PdfCopy(document, new FileOutputStream(destination));
        document.open();
        PdfImportedPage page = null;

        for (int i = 1; i <= r.getNumberOfPages(); i++) {
            // first check, examine the resource dictionary for /Font or
            // /XObject keys.  If either are present -> not blank.
            PdfDictionary pageDict = r.getPageN(i);
            PdfDictionary resDict = (PdfDictionary) pageDict.get(PdfName.RESOURCES);
            boolean noFontsOrImages = true;
            if (resDict != null) {
                noFontsOrImages = resDict.get(PdfName.FONT) == null && resDict.get(PdfName.XOBJECT) == null;
            }

            if (!noFontsOrImages) {
                byte bContent[] = r.getPageContent(i, raf);
                ByteArrayOutputStream bs = new ByteArrayOutputStream();
                bs.write(bContent);

                if (bs.size() > BLANK_THRESHOLD) {
                    page = writer.getImportedPage(r, i);
                    writer.addPage(page);
                }
            }
        }
    } finally {
        if (document != null)
            document.close();
        if (writer != null)
            writer.close();
        if (raf != null)
            raf.close();
        if (r != null)
            r.close();
    }
}

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