public InputStream cut(final InputStream source, final int start, final int end) {
try {
Assert.notNull(source, "source");
Assert.greaterOrEqual(start, 1, "start");
PdfReader reader = new PdfReader(source);
Document document = new Document(reader.getPageSizeWithRotation(1));
InputOutputStream outputStream = new InputOutputStream();
PdfCopy writer = new PdfCopy(document, outputStream);
int pageCount = reader.getNumberOfPages();
Assert.lessOrEqual(start, pageCount, "start");
int endPage = end;
if (endPage > pageCount) {
endPage = pageCount;
}
document.open();
for (int i = start; i <= endPage; i++) {
PdfImportedPage page = writer.getImportedPage(reader, i);
writer.addPage(page);
}
document.close();
writer.close();
reader.close();
return outputStream.getInputStream();
} catch (IOException e) {
throw new PDFException(e);
} catch (DocumentException e) {