/**
* 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;
}
private CMapToUnicode processToUnicode() {
CMapToUnicode cmapRet = null;
PdfObject toUni = PdfReader.getPdfObjectRelease(this.font.get(PdfName.TOUNICODE));
if (toUni instanceof PRStream) {
try {
byte[] touni = PdfReader.getStreamBytes((PRStream) toUni);
CidLocationFromByte lb = new CidLocationFromByte(touni);
cmapRet = new CMapToUnicode();
CMapParserEx.parseCid("", cmapRet, lb);
} catch (Exception e) {
cmapRet = null;
}
}
return cmapRet;
}
private void processType0(PdfDictionary font) {
try {
PdfObject toUniObject = PdfReader.getPdfObjectRelease(font.get(PdfName.TOUNICODE));
PdfArray df = (PdfArray) PdfReader.getPdfObjectRelease(font.get(PdfName.DESCENDANTFONTS));
PdfDictionary cidft = (PdfDictionary) PdfReader.getPdfObjectRelease(df.getPdfObject(0));
PdfNumber dwo = (PdfNumber) PdfReader.getPdfObjectRelease(cidft.get(PdfName.DW));
int dw = 1000;
if (dwo != null) dw = dwo.intValue();
IntHashtable widths =
readWidths((PdfArray) PdfReader.getPdfObjectRelease(cidft.get(PdfName.W)));
PdfDictionary fontDesc =
(PdfDictionary) PdfReader.getPdfObjectRelease(cidft.get(PdfName.FONTDESCRIPTOR));
fillFontDesc(fontDesc);
if (toUniObject instanceof PRStream) {
fillMetrics(PdfReader.getStreamBytes((PRStream) toUniObject), widths, dw);
}
} catch (Exception e) {
throw new ExceptionConverter(e);
}
}
