@Override
public void transform(ArchivalUnit au, PdfDocument pdfDocument) throws PdfException {
pdfDocument.unsetModificationDate();
PdfUtil.normalizeTrailerId(pdfDocument);
pdfDocument.unsetMetadata();
PDDocumentInformation pdDocInfo = ((GtvPdfBoxDocument) pdfDocument).getPdDocumentInformation();
if (pdDocInfo.getCustomMetadataValue(GtvPdfBoxDocument.PDFDATE) != null) {
pdDocInfo.setCustomMetadataValue(GtvPdfBoxDocument.PDFDATE, null);
}
if (pdDocInfo.getCustomMetadataValue(GtvPdfBoxDocument.PDFUSER) != null) {
pdDocInfo.setCustomMetadataValue(GtvPdfBoxDocument.PDFUSER, null);
}
PdfStateMachineWorker worker = new PdfStateMachineWorker();
boolean anyXform = false;
for (PdfPage pdfPage : pdfDocument.getPages()) {
PdfTokenStream pdfTokenStream = pdfPage.getPageTokenStream();
worker.process(pdfTokenStream);
if (worker.getResult()) {
anyXform = true;
List<PdfToken> tokens = pdfTokenStream.getTokens();
// clear tokens including text markers
tokens.subList(worker.getBegin(), worker.getEnd() + 1).clear();
pdfTokenStream.setTokens(tokens);
}
}
if (log.isDebug2()) {
log.debug2("Transform: " + anyXform);
}
}
