xt/ag_toolsbox
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

refactor(crc):重构CRC系列算法中对于模式的定义，限制其取值。

Browse Source
This commit is contained in:
徐涛
2023-07-16 11:45:31 +08:00
parent 732c01e36c
commit 1f99378655
4 changed files with 100 additions and 60 deletions
Download Patch File Download Diff File Expand all files Collapse all files

55
hash/crc8/crc8.go
View File

@@ -9,28 +9,43 @@ import (
"github.com/sigurn/crc8"
)
type CRC8Mode int
const (
ORIGIN CRC8Mode = iota
CDMA2000
DARC
DVB_S2
EBU
I_CODE
ITU
MAXIM
ROHC
WCDMA
)
// 根据提供的校验表名称生成对应的校验表
func hasherSelect(table string) *crc8.Table {
switch table {
case "CRC8":
func hasherSelect(mode CRC8Mode) *crc8.Table {
switch mode {
case ORIGIN:
return crc8.MakeTable(crc8.CRC8)
case "CDMA2000":
case CDMA2000:
return crc8.MakeTable(crc8.CRC8_CDMA2000)
case "DARC":
case DARC:
return crc8.MakeTable(crc8.CRC8_DARC)
case "DVB-S2":
case DVB_S2:
return crc8.MakeTable(crc8.CRC8_DVB_S2)
case "EBU":
case EBU:
return crc8.MakeTable(crc8.CRC8_EBU)
case "I-CODE":
case I_CODE:
return crc8.MakeTable(crc8.CRC8_I_CODE)
case "ITU":
case ITU:
return crc8.MakeTable(crc8.CRC8_ITU)
case "MAXIM":
case MAXIM:
return crc8.MakeTable(crc8.CRC8_MAXIM)
case "ROHC":
case ROHC:
return crc8.MakeTable(crc8.CRC8_ROHC)
case "WCDMA":
case WCDMA:
return crc8.MakeTable(crc8.CRC8_WCDMA)
default:
return crc8.MakeTable(crc8.CRC8)
@@ -38,25 +53,25 @@ func hasherSelect(table string) *crc8.Table {
}
// 计算给定字节数组的CRC8校验和，返回字节数组
func CRC8(data []byte, table ...string) []byte {
crcTable := append(table, "CRC8")
func CRC8(data []byte, mode ...CRC8Mode) []byte {
crcTable := append(mode, ORIGIN)
return []byte{crc8.Checksum(data, hasherSelect(crcTable[0]))}
}
// 计算给定字节数组的CRC8校验和，返回十六进制字符串
func CRC8Hex(data []byte, table ...string) string {
return hex.EncodeToString(CRC8(data, table...))
func CRC8Hex(data []byte, mode ...CRC8Mode) string {
return hex.EncodeToString(CRC8(data, mode...))
}
// 计算指定文件的CRC8校验和，返回字节数组
func SumFile(file string, table ...string) ([]byte, error) {
func SumFile(file string, mode ...CRC8Mode) ([]byte, error) {
f, err := os.Open(file)
if err != nil {
return nil, fmt.Errorf("未能打开指定文件，%w", err)
}
defer f.Close()
crcTable := append(table, "CRC8")
crcTable := append(mode, ORIGIN)
var buf = make([]byte, 0)
if _, err := f.Read(buf); err != nil {
return nil, fmt.Errorf("读取指定文件内容出错，%w", err)
@@ -65,8 +80,8 @@ func SumFile(file string, table ...string) ([]byte, error) {
}
// 计算指定文件的CRC8校验和，返回十六进制字符串
func SumFileHex(file string, table ...string) (string, error) {
crc, err := SumFile(file, table...)
func SumFileHex(file string, mode ...CRC8Mode) (string, error) {
crc, err := SumFile(file, mode...)
if err != nil {
return "", err
}