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95 lines
1.7 KiB
Go
95 lines
1.7 KiB
Go
package utils
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import (
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"strconv"
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"strings"
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)
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//return 0 if they are equal,and 1 if v1>2,and 2 if v1<v2
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func Compare(v1, v2 string) int {
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replaceMap := map[string]string{"V": "", "v": "", "-": "."}
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for k, v := range replaceMap {
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if strings.Contains(v1, k) {
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v1 = strings.Replace(v1, k, v, -1)
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}
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if strings.Contains(v2, k) {
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v2 = strings.Replace(v2, k, v, -1)
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}
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}
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verStr1 := strings.Split(v1, ".")
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verStr2 := strings.Split(v2, ".")
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ver1 := strSlice2IntSlice(verStr1)
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ver2 := strSlice2IntSlice(verStr2)
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var shorter int
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if len(ver1) > len(ver2) {
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shorter = len(ver2)
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} else {
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shorter = len(ver1)
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}
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for i := 0; i < shorter; i++ {
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if ver1[i] == ver2[i] {
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if shorter-1 == i {
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if len(ver1) == len(ver2) {
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return 0
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} else {
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if len(ver1) > len(ver2) {
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return 1
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} else {
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return 2
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}
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}
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}
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} else if ver1[i] > ver2[i] {
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return 1
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} else {
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return 2
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}
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}
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return -1
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}
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func strSlice2IntSlice(strs []string) []int64 {
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if len(strs) == 0 {
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return []int64{}
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}
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retInt := make([]int64, 0, len(strs))
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for _, str := range strs {
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i, err := strconv.ParseInt(str, 10, 64)
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if err == nil {
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retInt = append(retInt, i)
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}
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}
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return retInt
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}
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//operator compare returns true if the first field and the third field equation holds else false
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func CompareVersions(v1, operator, v2 string) bool {
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com := Compare(v1, v2)
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switch operator {
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case "==":
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if com == 0 {
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return true
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}
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case "<":
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if com == 2 {
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return true
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}
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case ">":
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if com == 1 {
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return true
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}
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case "<=":
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if com == 0 || com == 2 {
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return true
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}
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case ">=":
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if com == 0 || com == 1 {
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return true
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}
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}
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return false
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}
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