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package org.activeio.packet;
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import java.io.DataOutput;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.lang.reflect.Constructor;
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import java.nio.ByteBuffer;
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import org.activeio.Packet;
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final public class ByteBufferPacket implements Packet {
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public static final int DEFAULT_BUFFER_SIZE = Integer.parseInt(System.getProperty("org.activeio.DefaultByteBufferSize", ""+(64*1024)));
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public static final int DEFAULT_DIRECT_BUFFER_SIZE = Integer.parseInt(System.getProperty("org.activeio.DefaultDirectByteBufferSize", ""+(8*1024)));
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private final ByteBuffer buffer;
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private static final int TEMP_BUFFER_SIZE = 64*1024;
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4165
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public ByteBufferPacket(ByteBuffer buffer) {
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this.buffer = buffer;
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clear();
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}
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4154
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public ByteBuffer getByteBuffer() {
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return buffer;
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}
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public static ByteBufferPacket createDefaultBuffer(boolean direct) {
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if( direct )
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return new ByteBufferPacket( ByteBuffer.allocateDirect(DEFAULT_DIRECT_BUFFER_SIZE) );
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return new ByteBufferPacket( ByteBuffer.allocate(DEFAULT_BUFFER_SIZE) );
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}
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public void writeTo(OutputStream out) throws IOException {
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if( buffer.hasArray() ) {
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out.write(buffer.array(), position(), remaining());
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position(limit());
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} else {
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byte temp[] = new byte[TEMP_BUFFER_SIZE];
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while( buffer.hasRemaining() ) {
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int maxWrite = buffer.remaining() > temp.length ? temp.length : buffer.remaining();
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buffer.get(temp, 0, maxWrite);
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out.write(temp,0, maxWrite);
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}
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}
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}
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public void writeTo(DataOutput out) throws IOException {
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if( buffer.hasArray() ) {
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out.write(buffer.array(), position(), remaining());
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position(limit());
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} else {
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byte temp[] = new byte[TEMP_BUFFER_SIZE];
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while( buffer.hasRemaining() ) {
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int maxWrite = buffer.remaining() > temp.length ? temp.length : buffer.remaining();
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buffer.get(temp, 0, maxWrite);
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out.write(temp,0, maxWrite);
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}
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}
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}
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public int capacity() {
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return buffer.capacity();
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}
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public void clear() {
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buffer.clear();
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}
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public Packet compact() {
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buffer.compact();
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return this;
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}
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public void flip() {
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buffer.flip();
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}
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public boolean hasRemaining() {
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return buffer.hasRemaining();
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}
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public boolean isDirect() {
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return buffer.isDirect();
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}
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public boolean isReadOnly() {
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return buffer.isReadOnly();
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}
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public int limit() {
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return buffer.limit();
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}
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public void limit(int arg0) {
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buffer.limit(arg0);
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}
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public Packet mark() {
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buffer.mark();
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return this;
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}
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public int position() {
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return buffer.position();
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}
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public void position(int arg0) {
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buffer.position(arg0);
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}
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public int remaining() {
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return buffer.remaining();
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}
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public void rewind() {
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buffer.rewind();
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}
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public Packet slice() {
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return new ByteBufferPacket(buffer.slice());
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}
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public Packet duplicate() {
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return new ByteBufferPacket(buffer.duplicate());
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}
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public Object duplicate(ClassLoader cl) throws IOException {
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try {
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Class clazz = cl.loadClass(ByteBufferPacket.class.getName());
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Constructor constructor = clazz.getConstructor(new Class[]{ByteBuffer.class});
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return constructor.newInstance(new Object[]{buffer.duplicate()});
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} catch (Throwable e) {
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throw (IOException)new IOException("Could not duplicate packet in a different classloader: "+e).initCause(e);
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}
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}
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public int read() {
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if( !buffer.hasRemaining() )
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2
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return -1;
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return buffer.get() & 0xff;
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}
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4088
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public int read(byte[] data, int offset, int length) {
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4088
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if( !hasRemaining() )
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2
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return -1;
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4086
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int copyLength = Math.min(length, remaining());
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buffer.get(data, offset, copyLength);
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return copyLength;
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}
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2170
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public boolean write(int data) {
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2170
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if( !buffer.hasRemaining() )
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2
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return false;
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2168
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buffer.put((byte)data);
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return true;
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}
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208
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209
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4150
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public int write(byte[] data, int offset, int length) {
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4150
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if( !hasRemaining() )
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2
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return -1;
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213
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4148
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int copyLength = Math.min(length, remaining());
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4148
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buffer.put(data, offset, copyLength);
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4148
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return copyLength;
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}
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0
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public ByteSequence asByteSequence() {
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0
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if( buffer.hasArray() ) {
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0
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byte[] bs = buffer.array();
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0
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return new ByteSequence(bs, buffer.position(), buffer.remaining());
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}
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0
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return null;
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}
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230
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231
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232
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233
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0
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public byte[] sliceAsBytes() {
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0
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return null;
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}
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241
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242
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4066
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public int read(Packet dest) {
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243
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244
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4066
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int rc = Math.min(dest.remaining(), remaining());
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245
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4066
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if( rc > 0 ) {
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246
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247
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4066
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if( dest.getClass() == ByteBufferPacket.class ) {
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248
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249
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250
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0
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int limit = limit();
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0
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limit(position()+rc);
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253
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0
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((ByteBufferPacket)dest).buffer.put(buffer);
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255
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256
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0
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limit(limit);
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257
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258
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0
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return 0;
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259
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} else {
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260
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4066
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ByteSequence sequence = dest.asByteSequence();
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261
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4066
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rc = read(sequence.getData(), sequence.getOffset(), sequence.getLength());
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262
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4066
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dest.position(dest.position()+rc);
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263
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}
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264
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}
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265
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4066
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return rc;
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266
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}
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267
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268
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0
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public String toString() {
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269
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0
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return "{position="+position()+",limit="+limit()+",capacity="+capacity()+"}";
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270
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}
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271
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272
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20
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public Object narrow(Class target) {
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273
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20
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if( target.isAssignableFrom(getClass()) ) {
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274
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20
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return this;
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275
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}
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276
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0
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return null;
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277
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}
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278
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279
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0
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public void dispose() {
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280
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}
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281
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}
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