node-smart-buffer

环形缓冲区 & 数据包序列化/反序列化

$3

``
npm install node-smart-buffer
`

$3

`javascript
smartbuffer.InputBuffer.length
smartbuffer.InputBuffer.endian = smartbuffer.LE | smartbuffer.BE;
smartbuffer.InputBuffer.clear()
smartbuffer.InputBuffer.reset()
smartbuffer.InputBuffer.skip( cursor )
smartbuffer.InputBuffer.skipTo( cursor )
smartbuffer.InputBuffer.remaining()
smartbuffer.InputBuffer.read( length )
smartbuffer.InputBuffer.add( arrayBuffer )
smartbuffer.InputBuffer.discard( length )
smartbuffer.InputBuffer.int8()/uint8()
smartbuffer.InputBuffer.int16()/uint16()
smartbuffer.InputBuffer.int32()/uint32()
smartbuffer.InputBuffer.int64()/uint64()(返回buffer)
smartbuffer.InputBuffer.float()
smartbuffer.InputBuffer.double()

smartbuffer.OutputBuffer.length
smartbuffer.OutputBuffer.endian = smartbuffer.LE | smartbuffer.BE;
smartbuffer.OutputBuffer.clear()
smartbuffer.OutputBuffer.skip( cursor )
smartbuffer.OutputBuffer.skipTo( cursor )
smartbuffer.OutputBuffer.toBuffer()
smartbuffer.OutputBuffer.write( arrayBuffer )
smartbuffer.OutputBuffer.int8( number )/uint8( number )
smartbuffer.OutputBuffer.int16( number )/uint16( number )
smartbuffer.OutputBuffer.int32( number )/uint32( number )
smartbuffer.OutputBuffer.int64( buffer )/uint64( buffer )
smartbuffer.OutputBuffer.float( number )
smartbuffer.OutputBuffer.double( number )
`

$3

`javascript

// 引用
const smartbuffer = require( 'node-smart-buffer' );

// 编译包
const packet = smartbuffer.compile( {
utf8: {
encode: function( buffer, data ) {
data = Buffer.from( data );
buffer.uint16( data.length );
buffer.write( data );
},
decode: function( buffer ) {
return buffer.read( buffer.uint16() ).toString();
},
},
DEMO: [
'.attributes', // 自动命名 _0
{ // 自动命名 _1
index: 100, // 设置索引
a: 1,
b: 2,
c: 3,
},
'name:utf8', // 自动命名 _2
'data:uint8[uint16]', // 自动命名 _3
':DEMO2', // 自动命名 _4
{
encode: function( buffer, data ) {
// 仅当序列化时调用
console.log( 'DEMO.encode' );
},
decode: function( buffer, data ) {
// 仅当反序列化时调用
console.log( 'DEMO.decode' );
},
},
if ( data.name === "Job" ) {, // 直接使用
'a:uint32',
},
'b:uint8[5]',
'c:uint8[.a]',
],
DEMO2: [
'value:utf8',
],
} );

// 序列化数据
const output = new smartbuffer.OutputBuffer();
packet.encode.DEMO( output, {
name: 'Job',
data: [ 1, 2, 3, 4 ],
_4: {
value: 'DEMO2',
},
a: 2,
} );
console.log( output.toBuffer() );
/*
输出:
DEMO.encode

*/

// 反序列化数据
const input = new smartbuffer.InputBuffer();
input.add( output.toBuffer() );
console.log( packet.decode.DEMO( input ) );
/*
输出:
DEMO.decode
{ name: 'Job',
data: [ 1, 2, 3, 4 ],
_4: { value: 'DEMO2' },
a: 2 }
*/

// 索引
console.log( packet.indexed );
// { '100': 'DEMO' }

// 自定义属性
console.log( packet.storage );
// { DEMO: { index: 100, a: 1, b: 2, c: 3 }, DEMO2: {} }
``