CoreInputStream.java [plain text]
package gnu.java.net.protocol.core;
import gnu.gcj.Core;
import gnu.gcj.RawData;
import java.io.InputStream;
import java.io.IOException;
public class CoreInputStream extends InputStream
{
protected RawData ptr;
protected int pos;
protected int mark;
protected int count;
private native int unsafeGetByte (long offset);
private native int copyIntoByteArray (byte[] dest, int offset, int numBytes);
public CoreInputStream (Core core)
{
ptr = core.ptr;
count = core.length;
}
public synchronized int available()
{
return count - pos;
}
public synchronized void mark(int readAheadLimit)
{
mark = pos;
}
public boolean markSupported()
{
return true;
}
public synchronized int read()
{
if (pos < count)
return ((int) unsafeGetByte(pos++)) & 0xFF;
return -1;
}
public synchronized int read(byte[] b, int off, int len)
{
if (pos >= count)
return -1;
int numBytes = Math.min(count - pos, len);
copyIntoByteArray (b, off, numBytes);
pos += numBytes;
return numBytes;
}
public synchronized void reset()
{
pos = mark;
}
public synchronized long skip(long n)
{
long numBytes = Math.min ((long) (count - pos), n < 0 ? 0L : n);
pos += numBytes;
return numBytes;
}
}