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version_compare.go
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/
version_compare.go
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package helper
import (
"strconv"
"strings"
)
// 该函数比较两个版本号是否相等,是否大于或小于的关系
// 返回值:0表示v1与v2相等;1表示v1大于v2;2表示v1小于v2
func Compare(v1, v2 string) int {
// 替换一些常见的版本符号
replaceMap := map[string]string{"V": "", "v": "", "-": "."}
//keywords := {"alpha,beta,rc,p"}
for k, v := range replaceMap {
if strings.Contains(v1, k) {
v1 = strings.Replace(v1, k, v, -1)
}
if strings.Contains(v2, k) {
v2 = strings.Replace(v2, k, v, -1)
}
}
verStr1 := strings.Split(v1, ".")
verStr2 := strings.Split(v2, ".")
ver1 := strSlice2IntSlice(verStr1)
ver2 := strSlice2IntSlice(verStr2)
// 找出v1和v2哪一个最短
var shorter int
if len(ver1) > len(ver2) {
shorter = len(ver2)
} else {
shorter = len(ver1)
}
// 循环比较
for i := 0; i < shorter; i++ {
if ver1[i] == ver2[i] {
if shorter-1 == i {
if len(ver1) == len(ver2) {
return 0
} else {
if len(ver1) > len(ver2) {
return 1
} else {
return 2
}
}
}
} else if ver1[i] > ver2[i] {
return 1
} else {
return 2
}
}
return -1
}
func strSlice2IntSlice(strs []string) []int64 {
if len(strs) == 0 {
return []int64{}
}
retInt := make([]int64, 0, len(strs))
for _, str := range strs {
i, err := strconv.ParseInt(str, 10, 64)
if err == nil {
retInt = append(retInt, i)
}
}
return retInt
}
func VersionCompare(v1, v2, operator string) bool {
com := Compare(v1, v2)
switch operator {
case "==":
if com == 0 {
return true
}
case "<":
if com == 2 {
return true
}
case ">":
if com == 1 {
return true
}
case "<=":
if com == 0 || com == 2 {
return true
}
case ">=":
if com == 0 || com == 1 {
return true
}
}
return false
}