writing_data.go

package main

import (
    //"bytes"
    "encoding/binary"
)

/**
 * Append to the end of our msg buffer
 */
func WriteData(data []byte, msg *MessageBuffer) {
    msg.buffer = append(msg.buffer, data...)
    msg.length += len(data)
}

/**
 * Keep building a string until we hit a null
 */
func WriteString(data string, msg *MessageBuffer) {
    b := []byte(data)
    b = append(b, []byte{0}...) // null terminated
    msg.buffer = append(msg.buffer, b...)
    msg.length += len(b)
}

/**
 * Write 4 byte int into to LE buffer
 */
func WriteLong(data int, msg *MessageBuffer) {
    temp := make([]byte, 4)
    binary.LittleEndian.PutUint32(temp, uint32(data) & 0xffffffff)
    msg.buffer = append(msg.buffer, temp...)
    msg.length += 4
}

/**
 * Write 2 byte int into LE buffer
 */
func WriteShort(data int, msg *MessageBuffer) {
    temp := make([]byte, 2)
    binary.LittleEndian.PutUint16(temp, uint16(data) & 0xffff)
    msg.buffer = append(msg.buffer, temp...)
    msg.length += 2
}

// for consistency
func WriteByte(data byte, msg *MessageBuffer) {
    temp := make([]byte, 1)
    temp[0] = data & 0xff
    //msg.buffer = append(msg.buffer, data & 0xff)
    msg.buffer = append(msg.buffer, temp...)
    msg.length++
}