/** * Unpacks a file attachment. * * @param reader The object that reads the PDF document * @param filespec The dictonary containing the file specifications * @throws IOException */ protected static Object[] unpackFile(PdfReader reader, PdfDictionary filespec) throws IOException { Object arr[] = new Object[2]; // use to store name and file bytes if (filespec == null) { return null; } PdfName type = (PdfName) PdfReader.getPdfObject(filespec.get(PdfName.TYPE)); if (!PdfName.F.equals(type) && !PdfName.FILESPEC.equals(type)) { return null; } PdfDictionary ef = (PdfDictionary) PdfReader.getPdfObject(filespec.get(PdfName.EF)); if (ef == null) { return null; } PdfString fn = (PdfString) PdfReader.getPdfObject(filespec.get(PdfName.F)); if (fn == null) { return null; } File fLast = new File(fn.toUnicodeString()); PRStream prs = (PRStream) PdfReader.getPdfObject(ef.get(PdfName.F)); if (prs == null) { return null; } byte attachmentByte[] = PdfReader.getStreamBytes(prs); arr[0] = fLast.getName(); arr[1] = attachmentByte; return arr; }