@Override
public void process(AssetEncounter encounter) throws IOException {
Resource in = encounter.getResource();
int length = in.getContentLength();
if (length < 0) {
length = 0;
InputStream stream = in.openStream();
while (stream.read() != -1) length++;
stream.close();
}
byte[] data = String.valueOf(length).getBytes();
encounter.replaceWith(new MemoryResource(null, null, data));
}
private byte[] digest(Resource resource)
throws IOException, NoSuchAlgorithmException, DigestException {
InputStream stream = resource.openStream();
try {
MessageDigest digest = MessageDigest.getInstance("SHA-1");
byte[] buf = new byte[1024];
int len;
while ((len = stream.read(buf)) != -1) {
digest.update(buf, 0, len);
}
return digest.digest();
} finally {
stream.close();
}
}