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76 lines
1.4 KiB
Go
76 lines
1.4 KiB
Go
package utils
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import (
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"strconv"
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"strings"
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"github.com/zeromicro/go-zero/core/mathx"
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"github.com/zeromicro/go-zero/core/stringx"
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)
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var replacer = stringx.NewReplacer(map[string]string{
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"V": "",
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"v": "",
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"-": ".",
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})
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// CompareVersions returns true if the first field and the third field are equal, otherwise false.
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func CompareVersions(v1, op, v2 string) bool {
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result := compare(v1, v2)
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switch op {
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case "=", "==":
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return result == 0
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case "<":
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return result == -1
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case ">":
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return result == 1
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case "<=":
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return result == -1 || result == 0
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case ">=":
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return result == 0 || result == 1
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}
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return false
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}
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// return -1 if v1<v2, 0 if they are equal, and 1 if v1>v2
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func compare(v1, v2 string) int {
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v1, v2 = replacer.Replace(v1), replacer.Replace(v2)
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fields1, fields2 := strings.Split(v1, "."), strings.Split(v2, ".")
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ver1, ver2 := strsToInts(fields1), strsToInts(fields2)
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ver1len, ver2len := len(ver1), len(ver2)
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shorter := mathx.MinInt(ver1len, ver2len)
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for i := 0; i < shorter; i++ {
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if ver1[i] == ver2[i] {
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continue
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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 1
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}
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}
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if ver1len < ver2len {
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return -1
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} else if ver1len == ver2len {
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return 0
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} else {
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return 1
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}
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}
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func strsToInts(strs []string) []int64 {
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if len(strs) == 0 {
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return nil
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}
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ret := make([]int64, 0, len(strs))
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for _, str := range strs {
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i, _ := strconv.ParseInt(str, 10, 64)
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ret = append(ret, i)
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}
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return ret
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}
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