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version.go
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version.go
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package svc
import (
"strings"
"github.com/spf13/cast"
)
const (
VerSep = "."
)
// Check if ver1 is after ver2.
func VerAfter(ver1 string, ver2 string) bool {
ver1Sp := SplitVer(ver1)
ver2Sp := SplitVer(ver2)
ver1Sp, ver2Sp = PadVers(ver1Sp, ver2Sp)
for i := 0; i < len(ver1Sp); i++ {
l := cast.ToInt(ver1Sp[i])
r := cast.ToInt(ver2Sp[i])
if l > r {
return true
} else if l < r {
return false
}
}
return false
}
func SplitVer(ver string) []string {
ver = strings.ToLower(ver)
ver = strings.TrimPrefix(ver, "v")
ver = strings.TrimSuffix(ver, ".sql")
return strings.Split(ver, VerSep)
}
// v1, v2.1 => v1.0, v2.1; v2, v1.2 => v2.0, v1.2
func PadVers(ver1 []string, ver2 []string) ([]string, []string) {
if len(ver1) > len(ver2) {
return ver1, PadVer(ver2, len(ver1))
} else if len(ver1) > len(ver2) {
return PadVer(ver1, len(ver2)), ver2
}
return ver1, ver2
}
func PadVer(ver1 []string, s int) []string {
cp := make([]string, s)
for i := 0; i < s; i++ {
if i < len(ver1) {
cp[i] = ver1[i]
} else {
cp[i] = "0"
}
}
return cp
}