package protocol import ( "fmt" "math" ) // Price 价格,单位分 type Price int32 func (this Price) Float64() float64 { return float64(this) / 100 } func (this Price) String() string { return fmt.Sprintf("%0.2f元", this.Float64()) } type PriceLevel struct { Buy bool //买卖 Price Price //价 想买卖的价格 Number int //量 想买卖的数量 } type PriceLevels [5]PriceLevel func (this PriceLevels) String() string { s := "" if this[0].Buy { for i, v := range this { s += fmt.Sprintf("买%d %s %s\n", i+1, v.Price, IntUnitString(v.Number)) } } else { for i := 4; i >= 0; i-- { s += fmt.Sprintf("卖%d %s %s\n", i+1, this[i].Price, IntUnitString(this[i].Number)) } } return s } // K k线图 type K struct { Last Price //昨天收盘价 Open Price //今日开盘价 High Price //今日最高价 Low Price //今日最低价 Close Price //今日收盘价 } func (this K) String() string { return fmt.Sprintf("昨收:%s, 今开:%s, 最高:%s, 最低:%s, 今收:%s", this.Last, this.Open, this.High, this.Low, this.Close) } // DecodeK 一般是占用6字节 func DecodeK(bs []byte) ([]byte, K) { k := K{} //当日收盘价,一般2字节 bs, k.Close = GetPrice(bs) //前日收盘价,一般1字节 bs, k.Last = GetPrice(bs) k.Last += k.Close //当日开盘价,一般1字节 bs, k.Open = GetPrice(bs) k.Open += k.Close //当日最高价,一般1字节 bs, k.High = GetPrice(bs) k.High += k.Close //当日最低价,一般1字节 bs, k.Low = GetPrice(bs) k.Low += k.Close return bs, k } func GetPrice(bs []byte) ([]byte, Price) { for i := range bs { if bs[i]&0x80 == 0 { return bs[i+1:], getPrice(bs[:i+1]) } } return bs, 0 } /* 字节的第一位表示后续是否有数据(字节) 第一字节 的第二位表示正负 1负0正 有效数据为后6位 后续字节 的有效数据为后7位 最大长度未知 0x20说明有后续数据 */ func getPrice(bs []byte) (data Price) { for i := range bs { switch i { case 0: //取后6位 data += Price(int32(bs[0] & 0x3F)) default: //取后7位 data += Price(int32(bs[i]&0x7F) << uint8(6+(i-1)*7)) } //判断是否有后续数据 if bs[i]&0x80 == 0 { break } } //第一字节的第二位为1表示为负数 if len(bs) > 0 && bs[0]&0x40 > 0 { data = -data } return } func CutInt(bs []byte) ([]byte, int) { for i := range bs { if bs[i]&0x80 == 0 { return bs[i+1:], getData(bs[:i+1]) } } return bs, 0 } func getData(bs []byte) (data int) { for i := range bs { switch i { case 0: //取后6位 data += int(bs[0] & 0x3F) default: //取后7位 data += int(bs[i]&0x7F) << uint8(6+(i-1)*7) } //判断是否有后续数据 if bs[i]&0x80 == 0 { break } } //第一字节的第二位为1表示为负数 if len(bs) > 0 && bs[0]&0x40 > 0 { data = -data } return } func getVolume(ivol uint32) (volume float64) { logpoint := ivol >> (8 * 3) //hheax := ivol >> (8 * 3) // [3] hleax := (ivol >> (8 * 2)) & 0xff // [2] lheax := (ivol >> 8) & 0xff //[1] lleax := ivol & 0xff //[0] //dbl_1 := 1.0 //dbl_2 := 2.0 //dbl_128 := 128.0 dwEcx := logpoint*2 - 0x7f dwEdx := logpoint*2 - 0x86 dwEsi := logpoint*2 - 0x8e dwEax := logpoint*2 - 0x96 tmpEax := dwEcx if dwEcx < 0 { tmpEax = -dwEcx } else { tmpEax = dwEcx } dbl_xmm6 := 0.0 dbl_xmm6 = math.Pow(2.0, float64(tmpEax)) if dwEcx < 0 { dbl_xmm6 = 1.0 / dbl_xmm6 } dbl_xmm4 := 0.0 dbl_xmm0 := 0.0 if hleax > 0x80 { tmpdbl_xmm3 := 0.0 //tmpdbl_xmm1 := 0.0 dwtmpeax := dwEdx + 1 tmpdbl_xmm3 = math.Pow(2.0, float64(dwtmpeax)) dbl_xmm0 = math.Pow(2.0, float64(dwEdx)) * 128.0 dbl_xmm0 += float64(hleax&0x7f) * tmpdbl_xmm3 dbl_xmm4 = dbl_xmm0 } else { if dwEdx >= 0 { dbl_xmm0 = math.Pow(2.0, float64(dwEdx)) * float64(hleax) } else { dbl_xmm0 = (1 / math.Pow(2.0, float64(dwEdx))) * float64(hleax) } dbl_xmm4 = dbl_xmm0 } dbl_xmm3 := math.Pow(2.0, float64(dwEsi)) * float64(lheax) dbl_xmm1 := math.Pow(2.0, float64(dwEax)) * float64(lleax) if (hleax & 0x80) > 0 { dbl_xmm3 *= 2.0 dbl_xmm1 *= 2.0 } volume = dbl_xmm6 + dbl_xmm4 + dbl_xmm3 + dbl_xmm1 return }