package freenet.support.io;
import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;
public class CountedInputStream extends FilterInputStream {
protected long count = 0;
public CountedInputStream(InputStream in) {
super(in);
if(in == null) throw new IllegalStateException("null fed to CountedInputStream");
}
public final long count() {
return count;
}
@Override
public int read() throws IOException {
int ret = super.read();
if (ret != -1)
++count;
return ret;
}
@Override
public int read(byte[] buf, int off, int len) throws IOException {
int ret = in.read(buf, off, len);
if (ret != -1)
count += ret;
return ret;
}
@Override
public int read(byte[] buf) throws IOException {
int ret = in.read(buf);
if (ret != -1)
count += ret;
return ret;
}
@Override
public long skip(long n) throws IOException {
long l = in.skip(n);
if(l > 0) count += l;
return l;
}
}