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Code Issues Projects Releases Wiki Activity

Crush packets for speed and add basic toStrings

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This commit is contained in:
md_5 2012-10-18 10:32:41 +11:00
parent c9f78a989c
commit 83275df93e
1 changed files with 79 additions and 1 deletions
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80
src/main/java/net/md_5/mc/protocol/PacketDefinitions.java
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@ -2,6 +2,9 @@ package net.md_5.mc.protocol;
import java.io.DataInput; import java.io.DataInput;
import java.io.IOException; import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class PacketDefinitions { public class PacketDefinitions {
@ -23,6 +26,11 @@ public class PacketDefinitions {
short len = in.readShort(); short len = in.readShort();
skip(in, len * 2); skip(in, len * 2);
} }
@Override
public String toString() {
return "String";
}
}; };
private static final Instruction ITEM = new Instruction() { private static final Instruction ITEM = new Instruction() {
@Override @Override
@ -33,6 +41,11 @@ public class PacketDefinitions {
SHORT_BYTE.read(in); SHORT_BYTE.read(in);
} }
} }
@Override
public String toString() {
return "Item";
}
}; };
private static final Instruction SHORT_ITEM = new ShortHeader(ITEM); private static final Instruction SHORT_ITEM = new ShortHeader(ITEM);
private static final Instruction METADATA = new Instruction() { private static final Instruction METADATA = new Instruction() {
@ -69,6 +82,11 @@ public class PacketDefinitions {
x = in.readByte(); x = in.readByte();
} }
} }
@Override
public String toString() {
return "Metadata";
}
}; };
private static final Instruction BULK_CHUNK = new Instruction() { private static final Instruction BULK_CHUNK = new Instruction() {
@Override @Override
@ -77,6 +95,11 @@ public class PacketDefinitions {
INT_BYTE.read(in); INT_BYTE.read(in);
skip(in, count * 12); skip(in, count * 12);
} }
@Override
public String toString() {
return "Bulk Chunk";
}
}; };
private static final Instruction UBYTE_BYTE = new Instruction() { private static final Instruction UBYTE_BYTE = new Instruction() {
@Override @Override
@ -84,6 +107,11 @@ public class PacketDefinitions {
int size = in.readUnsignedByte(); int size = in.readUnsignedByte();
skip(in, size); skip(in, size);
} }
@Override
public String toString() {
return "Unsigned Byte Byte";
}
}; };
static { static {
@ -199,6 +227,33 @@ public class PacketDefinitions {
opCodes[0xFD] = new Instruction[]{STRING, SHORT_BYTE, SHORT_BYTE}; opCodes[0xFD] = new Instruction[]{STRING, SHORT_BYTE, SHORT_BYTE};
opCodes[0xFE] = new Instruction[]{}; opCodes[0xFE] = new Instruction[]{};
opCodes[0xFF] = new Instruction[]{STRING}; opCodes[0xFF] = new Instruction[]{STRING};
crushInstructions();
}
private static void crushInstructions() {
for (int i = 0; i < opCodes.length; i++) {
Instruction[] instructions = opCodes[i];
if (instructions != null) {
List<Instruction> crushed = new ArrayList<Instruction>();
int nextJumpSize = 0;
for (Instruction child : instructions) {
if (child instanceof JumpOpCode) {
nextJumpSize += ((JumpOpCode) child).len;
} else {
if (nextJumpSize != 0) {
crushed.add(new JumpOpCode(nextJumpSize));
}
crushed.add(child);
nextJumpSize = 0;
}
}
if (nextJumpSize != 0) {
crushed.add(new JumpOpCode(nextJumpSize));
}
opCodes[i] = crushed.toArray(new Instruction[crushed.size()]);
}
}
} }
public static void readPacket(DataInput in) throws IOException { public static void readPacket(DataInput in) throws IOException {
@ -207,7 +262,7 @@ public class PacketDefinitions {
if (instructions == null) { if (instructions == null) {
throw new IOException("Unknown packet id " + packetId); throw new IOException("Unknown packet id " + packetId);
} }
System.out.println(Integer.toHexString(packetId));
for (Instruction instruction : instructions) { for (Instruction instruction : instructions) {
instruction.read(in); instruction.read(in);
} }
@ -222,6 +277,9 @@ public class PacketDefinitions {
in.readByte(); in.readByte();
} }
} }
@Override
public abstract String toString();
} }
static class JumpOpCode extends Instruction { static class JumpOpCode extends Instruction {
@ -239,6 +297,11 @@ public class PacketDefinitions {
void read(DataInput in) throws IOException { void read(DataInput in) throws IOException {
skip(in, len); skip(in, len);
} }
@Override
public String toString() {
return "Jump(" + len + ")";
}
} }
static class ByteHeader extends Instruction { static class ByteHeader extends Instruction {
@ -256,6 +319,11 @@ public class PacketDefinitions {
child.read(in); child.read(in);
} }
} }
@Override
public String toString() {
return "ByteHeader(" + child + ")";
}
} }
static class ShortHeader extends Instruction { static class ShortHeader extends Instruction {
@ -273,6 +341,11 @@ public class PacketDefinitions {
child.read(in); child.read(in);
} }
} }
@Override
public String toString() {
return "ShortHeader(" + child + ")";
}
} }
static class IntHeader extends Instruction { static class IntHeader extends Instruction {
@ -290,5 +363,10 @@ public class PacketDefinitions {
child.read(in); child.read(in);
} }
} }
@Override
public String toString() {
return "IntHeader(" + child + ")";
}
} }
} }