private IdentificationResultCollection handleContainer(
IdentificationRequest request, IdentificationResultCollection results) throws IOException {
// process a container format (ole2, odf, ooxml etc)
String containerFormat = getContainerFormat(results);
try {
if (containerFormatResolver != null && containerFormat != null) {
ContainerIdentifier containerIdentifier =
containerIdentifierFactory.getIdentifier(containerFormat);
containerIdentifier.setMaxBytesToScan(maxBytesToScan);
IdentificationResultCollection containerResults = containerIdentifier.submit(request);
droidCore.removeLowerPriorityHits(containerResults);
droidCore.checkForExtensionsMismatches(containerResults, request.getExtension());
containerResults.setFileLength(request.size());
containerResults.setRequestMetaData(request.getRequestMetaData());
return containerResults.getResults().isEmpty() ? null : containerResults;
}
// CHECKSTYLE:OFF - rules say don't catch this, but other code keeps on throwing them.
// Don't prejudice any results so far because other code isn't following 'the rules'.
} catch (Exception e) {
// CHECKSTYLE:ON
String causeMessage = "";
if (e.getCause() != null) {
causeMessage = e.getCause().getMessage();
}
final String message =
String.format(
CONTAINER_ERROR,
containerFormat,
request.getIdentifier().getUri().toString(),
e.getMessage(),
causeMessage);
log.warn(message);
}
return null;
}
private void generateHash(IdentificationRequest request) throws IOException {
if (generateHash) {
try {
InputStream in = request.getSourceInputStream();
try {
String hash = hashGenerator.hash(in);
request.getRequestMetaData().setHash(hash);
} finally {
if (in != null) {
in.close();
}
}
// CHECKSTYLE:OFF - generating a hash can't prejudice any other results
} catch (Exception e) {
log.error(e);
}
// CHECKSTYLE:ON
}
}