/* @see loci.formats.FormatReader#initFile(String) */
protected void initFile(String id) throws FormatException, IOException {
super.initFile(id);
reader = new ImageReader();
reader.setMetadataOptions(getMetadataOptions());
reader.setMetadataFiltered(isMetadataFiltered());
reader.setOriginalMetadataPopulated(isOriginalMetadataPopulated());
reader.setNormalized(isNormalized());
reader.setMetadataStore(getMetadataStore());
// NB: We need a raw handle on the ZIP data itself, not a ZipHandle.
IRandomAccess rawHandle = Location.getHandle(id, false, false);
in = new RandomAccessInputStream(rawHandle, id);
ZipInputStream zip = new ZipInputStream(in);
while (true) {
ZipEntry ze = zip.getNextEntry();
if (ze == null) break;
ZipHandle handle = new ZipHandle(id, ze);
Location.mapFile(ze.getName(), handle);
mappedFiles.add(ze.getName());
}
ZipHandle base = new ZipHandle(id);
reader.setId(base.getEntryName());
metadataStore = reader.getMetadataStore();
core = reader.getCoreMetadata();
metadata = reader.getGlobalMetadata();
base.close();
}
/**
* Checks that the given id points at a valid data stream.
*
* @param id The id string to validate.
* @throws IOException if the id is not valid.
*/
public static void checkValidId(String id) throws IOException {
if (getMappedFile(id) != null) {
// NB: The id maps directly to an IRandomAccess handle, so is valid. Do
// not destroy an existing mapped IRandomAccess handle by closing it.
return;
}
// NB: Try to actually open a handle to make sure it is valid. Close it
// afterward so we don't leave it dangling. The process of doing this will
// throw IOException if something goes wrong.
Location.getHandle(id).close();
}
private static IRandomAccess getHandle(String file) throws IOException {
return Location.getHandle(file, false, false);
}