Flatbuffers for mirage

buffers.Image.go

// automatically generated by the FlatBuffers compiler, do not modify

package buffers

import (
	flatbuffers "github.com/google/flatbuffers/go"
)

type Image struct {
	_tab flatbuffers.Table
}

func GetRootAsImage(buf []byte, offset flatbuffers.UOffsetT) *Image {
	n := flatbuffers.GetUOffsetT(buf[offset:])
	x := &Image{}
	x.Init(buf, n+offset)
	return x
}

func (rcv *Image) Init(buf []byte, i flatbuffers.UOffsetT) {
	rcv._tab.Bytes = buf
	rcv._tab.Pos = i
}

func (rcv *Image) Table() flatbuffers.Table {
	return rcv._tab
}

func (rcv *Image) Id() []byte {
	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
	if o != 0 {
		return rcv._tab.ByteVector(o + rcv._tab.Pos)
	}
	return nil
}

func (rcv *Image) Data(j int) byte {
	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
	if o != 0 {
		a := rcv._tab.Vector(o)
		return rcv._tab.GetByte(a + flatbuffers.UOffsetT(j*1))
	}
	return 0
}

func (rcv *Image) DataLength() int {
	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
	if o != 0 {
		return rcv._tab.VectorLen(o)
	}
	return 0
}

func (rcv *Image) DataBytes() []byte {
	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
	if o != 0 {
		return rcv._tab.ByteVector(o + rcv._tab.Pos)
	}
	return nil
}

func ImageStart(builder *flatbuffers.Builder) {
	builder.StartObject(2)
}
func ImageAddId(builder *flatbuffers.Builder, id flatbuffers.UOffsetT) {
	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(id), 0)
}
func ImageAddData(builder *flatbuffers.Builder, data flatbuffers.UOffsetT) {
	builder.PrependUOffsetTSlot(1, flatbuffers.UOffsetT(data), 0)
}
func ImageStartDataVector(builder *flatbuffers.Builder, numElems int) flatbuffers.UOffsetT {
	return builder.StartVector(1, numElems, 1)
}
func ImageEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
	return builder.EndObject()
}

image.fbs

namespace buffers;
table Image {
  id:string;
  data:[ubyte];
}

main.go

package main

import (
	"fmt"

	"github.com/duythinht/play/buffers"
	flatbuffers "github.com/google/flatbuffers/go"
)

func MakeImage(id string, data []byte) []byte {
	builder := flatbuffers.NewBuilder(0)
	builder.Reset()
	idOffset := builder.CreateString(id)
	dataOffset := builder.CreateByteVector(data)

	buffers.ImageStart(builder)

	buffers.ImageAddId(builder, idOffset)
	buffers.ImageAddData(builder, dataOffset)

	image := buffers.ImageEnd(builder)

	builder.Finish(image)
	return builder.Bytes[builder.Head():]
}

func ReadImage(buf []byte) *buffers.Image {
	return buffers.GetRootAsImage(buf, 0)
}

func main() {
	buf := MakeImage("hello/123", []byte("this is data data data"))
	image := ReadImage(buf)
	fmt.Printf("%s\n", image.Id())
	fmt.Printf("%s\n", image.Id())
	fmt.Printf("%s\n", image.Id())
	fmt.Printf("%s\n", image.Id())
	fmt.Printf("%s\n", image.Id())
	fmt.Printf("%s\n", image.Id())
}