/**
* Returns a new RandomAccessInputStream around the raw handle underlying the provided stream,
* instead of using a zip handle.
*
* <p>NB: closes the provided stream.
*/
public static RandomAccessInputStream getRawStream(
final LocationService locationService, final RandomAccessInputStream stream)
throws IOException {
// NB: We need a raw handle on the ZIP data itself, not a ZipHandle.
final String id = stream.getFileName();
final IRandomAccess rawHandle = locationService.getHandle(id, false, false);
return new RandomAccessInputStream(locationService.getContext(), rawHandle, id);
}
@Override
public void close(final boolean fileOnly) throws IOException {
for (final String name : mappedFiles) {
final IRandomAccess handle = locationService.getMappedFile(name);
locationService.mapFile(name, null);
if (handle != null) {
handle.close();
}
}
mappedFiles.clear();
super.close(fileOnly);
if (metadata != null) metadata.close(fileOnly);
if (!fileOnly) metadata = null;
mappedFiles = new ArrayList<String>();
}
/**
* Extracts the String id of the provided stream.
*
* @param locationService - The location service to use for mapping files
* @param stream - Stream, built around a .zip file, to extract the actual id from
* @param mappedFiles - Optional param. If provided, all discovered entries in the underlying
* archive will be added to this list.
* @return An id of the base entry in the .zip
* @throws IOException
*/
public static String unzipId(
final LocationService locationService,
final RandomAccessInputStream stream,
final List<String> mappedFiles)
throws IOException {
final ZipInputStream zip = new ZipInputStream(stream);
ZipEntry ze = null;
while (true) {
ze = zip.getNextEntry();
if (ze == null) break;
final ZipHandle handle =
new ZipHandle(locationService.getContext(), stream.getFileName(), ze);
locationService.mapFile(ze.getName(), handle);
if (mappedFiles != null) mappedFiles.add(ze.getName());
}
final ZipHandle base = new ZipHandle(locationService.getContext(), stream.getFileName());
final String id = base.getEntryName();
base.close();
return id;
}