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import MessagePack for Java implementation plan 1

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This commit is contained in:
frsyuki
2009-10-25 01:27:09 +09:00
parent c6a2569af8
commit 5393a0df16
5 changed files with 712 additions and 0 deletions
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266
java-plan1/Packer.java Normal file
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import java.io.*;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.HashMap;
import java.math.BigInteger;
public class Packer {
protected byte[] castBytes = new byte[9];
protected ByteBuffer castBuffer = ByteBuffer.wrap(castBytes);
protected OutputStream out;
public Packer(OutputStream out)
{
this.out = out;
}
public Packer packByte(byte d) throws IOException
{
if(d < -(1<<5)) {
castBytes[0] = (byte)0xd1;
castBytes[1] = d;
out.write(castBytes, 0, 2);
} else {
out.write(d);
}
return this;
}
public Packer packShort(short d) throws IOException
{
if(d < -(1<<5)) {
if(d < -(1<<7)) {
// signed 16
castBytes[0] = (byte)0xd1;
castBuffer.putShort(1, d);
out.write(castBytes, 0, 3);
} else {
// signed 8
castBytes[0] = (byte)0xd0;
castBytes[1] = (byte)d;
out.write(castBytes, 0, 2);
}
} else if(d < (1<<7)) {
// fixnum
out.write((byte)d);
} else {
if(d < (1<<8)) {
// unsigned 8
castBytes[0] = (byte)0xcc;
castBytes[1] = (byte)d;
out.write(castBytes, 0, 2);
} else {
// unsigned 16
castBytes[0] = (byte)0xcd;
castBuffer.putShort(1, d);
out.write(castBytes, 0, 3);
}
}
return this;
}
public Packer packInt(int d) throws IOException
{
if(d < -(1<<5)) {
if(d < -(1<<15)) {
// signed 32
castBytes[0] = (byte)0xd2;
castBuffer.putInt(1, d);
out.write(castBytes, 0, 5);
} else if(d < -(1<<7)) {
// signed 16
castBytes[0] = (byte)0xd1;
castBuffer.putShort(1, (short)d);
out.write(castBytes, 0, 3);
} else {
// signed 8
castBytes[0] = (byte)0xd0;
castBytes[1] = (byte)d;
out.write(castBytes, 0, 2);
}
} else if(d < (1<<7)) {
// fixnum
out.write((byte)d);
} else {
if(d < (1<<8)) {
// unsigned 8
castBytes[0] = (byte)0xcc;
castBytes[1] = (byte)d;
out.write(castBytes, 0, 2);
} else if(d < (1<<16)) {
// unsigned 16
castBytes[0] = (byte)0xcd;
castBuffer.putShort(1, (short)d);
out.write(castBytes, 0, 3);
} else {
// unsigned 32
castBytes[0] = (byte)0xce;
castBuffer.putInt(1, d);
out.write(castBytes, 0, 5);
}
}
return this;
}
public Packer packLong(long d) throws IOException
{
if(d < -(1L<<5)) {
if(d < -(1L<<15)) {
if(d < -(1L<<31)) {
// signed 64
castBytes[0] = (byte)0xd3;
castBuffer.putLong(1, d);
out.write(castBytes, 0, 9);
} else {
// signed 32
castBytes[0] = (byte)0xd2;
castBuffer.putInt(1, (int)d);
out.write(castBytes, 0, 5);
}
} else {
if(d < -(1<<7)) {
// signed 16
castBytes[0] = (byte)0xd1;
castBuffer.putShort(1, (short)d);
out.write(castBytes, 0, 3);
} else {
// signed 8
castBytes[0] = (byte)0xd0;
castBytes[1] = (byte)d;
out.write(castBytes, 0, 2);
}
}
} else if(d < (1<<7)) {
// fixnum
out.write((byte)d);
} else {
if(d < (1L<<16)) {
if(d < (1<<8)) {
// unsigned 8
castBytes[0] = (byte)0xcc;
castBytes[1] = (byte)d;
out.write(castBytes, 0, 2);
} else {
// unsigned 16
castBytes[0] = (byte)0xcd;
castBuffer.putShort(1, (short)d);
out.write(castBytes, 0, 3);
//System.out.println("pack uint 16 "+(short)d);
}
} else {
if(d < (1L<<32)) {
// unsigned 32
castBytes[0] = (byte)0xce;
castBuffer.putInt(1, (int)d);
out.write(castBytes, 0, 5);
} else {
// unsigned 64
castBytes[0] = (byte)0xcf;
castBuffer.putLong(1, d);
out.write(castBytes, 0, 9);
}
}
}
return this;
}
public Packer packFloat(float d) throws IOException
{
castBytes[0] = (byte)0xca;
castBuffer.putFloat(1, d);
out.write(castBytes, 0, 5);
return this;
}
public Packer packDouble(double d) throws IOException
{
castBytes[0] = (byte)0xcb;
castBuffer.putDouble(1, d);
out.write(castBytes, 0, 9);
return this;
}
public Packer packNil() throws IOException
{
out.write((byte)0xc0);
return this;
}
public Packer packTrue() throws IOException
{
out.write((byte)0xc3);
return this;
}
public Packer packFalse() throws IOException
{
out.write((byte)0xc2);
return this;
}
public Packer packArray(int n) throws IOException
{
if(n < 16) {
final int d = 0x90 | n;
out.write((byte)d);
} else if(n < 65536) {
castBytes[0] = (byte)0xdc;
castBuffer.putShort(1, (short)n);
out.write(castBytes, 0, 3);
} else {
castBytes[0] = (byte)0xdd;
castBuffer.putInt(1, n);
out.write(castBytes, 0, 5);
}
return this;
}
public Packer packMap(int n) throws IOException
{
if(n < 16) {
final int d = 0x80 | n;
out.write((byte)d);
} else if(n < 65536) {
castBytes[0] = (byte)0xde;
castBuffer.putShort(1, (short)n);
out.write(castBytes, 0, 3);
} else {
castBytes[0] = (byte)0xdf;
castBuffer.putInt(1, n);
out.write(castBytes, 0, 5);
}
return this;
}
public Packer packRaw(int n) throws IOException
{
if(n < 32) {
final int d = 0xa0 | n;
out.write((byte)d);
} else if(n < 65536) {
castBytes[0] = (byte)0xda;
castBuffer.putShort(1, (short)n);
out.write(castBytes, 0, 3);
} else {
castBytes[0] = (byte)0xdb;
castBuffer.putInt(1, n);
out.write(castBytes, 0, 5);
}
return this;
}
public Packer packRawBody(byte[] b) throws IOException
{
out.write(b);
return this;
}
public Packer packRawBody(byte[] b, int off, int length) throws IOException
{
out.write(b, off, length);
return this;
}
//public Packer pack(Object o) throws IOException
}