/** @see com.lowagie.tools.AbstractTool#execute() */
public static void execute(String srcvalue, String destvalue, String rotvalue) {
try {
if (StringUtils.isBlank(srcvalue)) {
throw new InstantiationException("You need to choose a sourcefile");
}
File src = new File(srcvalue);
if (StringUtils.isBlank(destvalue)) {
throw new InstantiationException("You need to choose a destination file");
}
File dest = new File(destvalue);
if (StringUtils.isBlank(rotvalue)) {
throw new InstantiationException("You need to choose a rotation");
}
int rotation = Integer.parseInt(rotvalue);
// we create a reader for a certain document
PdfReader reader = new PdfReader(src.getAbsolutePath());
// we retrieve the total number of pages and the page size
int total = reader.getNumberOfPages();
System.out.println("There are " + total + " pages in the original file.");
PdfDictionary pageDict;
int currentRotation;
for (int p = 1; p <= total; p++) {
currentRotation = reader.getPageRotation(p);
pageDict = reader.getPageN(p);
pageDict.put(PdfName.ROTATE, new PdfNumber(currentRotation + rotation));
}
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(dest));
stamper.close();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* Processes content from the specified page number using the specified listener
*
* @param <E> the type of the renderListener - this makes it easy to chain calls
* @param pageNumber the page number to process
* @param renderListener the listener that will receive render callbacks
* @return the provided renderListener
* @throws IOException if operations on the reader fail
*/
public <E extends RenderListener> E processContent(int pageNumber, E renderListener)
throws IOException {
PdfDictionary pageDic = reader.getPageN(pageNumber);
PdfDictionary resourcesDic = pageDic.getAsDict(PdfName.RESOURCES);
PdfContentStreamProcessor processor = new PdfContentStreamProcessor(renderListener);
processor.processContent(
ContentByteUtils.getContentBytesForPage(reader, pageNumber), resourcesDic);
return renderListener;
}
private String extractTextFromPdf(byte pdfAsByteArray[]) throws IOException, IOException {
PdfReader reader = new PdfReader(pdfAsByteArray);
TextRenderListener listener = new TextRenderListener();
PdfContentStreamProcessor processor = new PdfContentStreamProcessor(listener);
PdfDictionary pageDic = reader.getPageN(1);
PdfDictionary resourcesDic = pageDic.getAsDict(PdfName.RESOURCES);
byte array[] = ContentByteUtils.getContentBytesForPage(reader, 1);
processor.processContent(array, resourcesDic);
return listener.getSb();
}
private static void crop(String input) throws Exception {
String output = input.replace(".pdf", "-crop.pdf");
PdfReader reader = new PdfReader(input);
final int n = reader.getNumberOfPages();
Rectangle pageSize = reader.getPageSize(1);
System.out.println("Input page size: " + pageSize);
float left = (pageSize.getWidth() - kTextWidth) / 2 - kMargin;
float right = pageSize.getWidth() - left;
float bottom = (pageSize.getHeight() - kTextHeight) / 2;
float top = pageSize.getHeight() - bottom;
PdfRectangle rect = new PdfRectangle(left, bottom + kOffset, right, top + kOffset);
for (int i = 1; i <= n; i++) {
PdfDictionary pageDict = reader.getPageN(i);
pageDict.put(PdfName.CROPBOX, rect);
}
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(output));
stamper.close();
}
