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package net.minecraft.server;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.List;
import java.util.zip.DataFormatException;
import java.util.zip.Deflater;
import java.util.zip.Inflater;
public class Packet56MapChunkBulk extends Packet {
private int[] c;
private int[] d;
public int[] a;
public int[] b;
private byte[] buffer;
private byte[][] inflatedBuffers;
private int size;
private boolean h;
private byte[] buildBuffer = new byte[0]; // CraftBukkit - remove static
// CraftBukkit start
static final ThreadLocal<Deflater> localDeflater = new ThreadLocal<Deflater>() {
@Override
protected Deflater initialValue() {
// Don't use higher compression level, slows things down too much
return new Deflater(6);
}
};
// CraftBukkit end
public Packet56MapChunkBulk() {}
public Packet56MapChunkBulk(List list) {
int i = list.size();
this.c = new int[i];
this.d = new int[i];
this.a = new int[i];
this.b = new int[i];
this.inflatedBuffers = new byte[i][];
this.h = !list.isEmpty() && !((Chunk) list.get(0)).world.worldProvider.f;
int j = 0;
for (int k = 0; k < i; ++k) {
Chunk chunk = (Chunk) list.get(k);
ChunkMap chunkmap = Packet51MapChunk.a(chunk, true, '\uffff');
if (buildBuffer.length < j + chunkmap.a.length) {
byte[] abyte = new byte[j + chunkmap.a.length];
System.arraycopy(buildBuffer, 0, abyte, 0, buildBuffer.length);
buildBuffer = abyte;
}
System.arraycopy(chunkmap.a, 0, buildBuffer, j, chunkmap.a.length);
j += chunkmap.a.length;
this.c[k] = chunk.x;
this.d[k] = chunk.z;
this.a[k] = chunkmap.b;
this.b[k] = chunkmap.c;
this.inflatedBuffers[k] = chunkmap.a;
}
/* CraftBukkit start - moved to compress()
Deflater deflater = new Deflater(-1);
try {
deflater.setInput(buildBuffer, 0, j);
deflater.finish();
this.buffer = new byte[j];
this.size = deflater.deflate(this.buffer);
} finally {
deflater.end();
}
*/
}
// Add compression method
public void compress() {
if (this.buffer != null) {
return;
}
Deflater deflater = localDeflater.get();
deflater.reset();
deflater.setInput(this.buildBuffer);
deflater.finish();
this.buffer = new byte[this.buildBuffer.length + 100];
this.size = deflater.deflate(this.buffer);
}
// CraftBukkit end
public void a(DataInputStream datainputstream) throws IOException { // CraftBukkit - throws IOException
short short1 = datainputstream.readShort();
this.size = datainputstream.readInt();
this.h = datainputstream.readBoolean();
this.c = new int[short1];
this.d = new int[short1];
this.a = new int[short1];
this.b = new int[short1];
this.inflatedBuffers = new byte[short1][];
if (buildBuffer.length < this.size) {
buildBuffer = new byte[this.size];
}
datainputstream.readFully(buildBuffer, 0, this.size);
byte[] abyte = new byte[196864 * short1];
Inflater inflater = new Inflater();
inflater.setInput(buildBuffer, 0, this.size);
try {
inflater.inflate(abyte);
} catch (DataFormatException dataformatexception) {
throw new IOException("Bad compressed data format");
} finally {
inflater.end();
}
int i = 0;
for (int j = 0; j < short1; ++j) {
this.c[j] = datainputstream.readInt();
this.d[j] = datainputstream.readInt();
this.a[j] = datainputstream.readShort();
this.b[j] = datainputstream.readShort();
int k = 0;
int l = 0;
int i1;
for (i1 = 0; i1 < 16; ++i1) {
k += this.a[j] >> i1 & 1;
l += this.b[j] >> i1 & 1;
}
i1 = 2048 * 4 * k + 256;
i1 += 2048 * l;
if (this.h) {
i1 += 2048 * k;
}
this.inflatedBuffers[j] = new byte[i1];
System.arraycopy(abyte, i, this.inflatedBuffers[j], 0, i1);
i += i1;
}
}
public void a(DataOutputStream dataoutputstream) throws IOException { // CraftBukkit - throws IOException
compress(); // CraftBukkit
dataoutputstream.writeShort(this.c.length);
dataoutputstream.writeInt(this.size);
dataoutputstream.writeBoolean(this.h);
dataoutputstream.write(this.buffer, 0, this.size);
for (int i = 0; i < this.c.length; ++i) {
dataoutputstream.writeInt(this.c[i]);
dataoutputstream.writeInt(this.d[i]);
dataoutputstream.writeShort((short) (this.a[i] & '\uffff'));
dataoutputstream.writeShort((short) (this.b[i] & '\uffff'));
}
}
public void handle(Connection connection) {
connection.a(this);
}
public int a() {
return 6 + this.size + 12 * this.d();
}
public int d() {
return this.c.length;
}
}
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