1
0
Fork 0
mirror of https://github.com/moby/moby.git synced 2022-11-09 12:21:53 -05:00
moby--moby/pkg/version/version.go

64 lines
1.4 KiB
Go
Raw Normal View History

package version
import (
"strconv"
"strings"
)
2014-10-06 11:41:53 -04:00
// Version provides utility methods for comparing versions.
type Version string
2014-10-06 11:41:53 -04:00
func (v Version) compareTo(other Version) int {
var (
2014-10-06 11:41:53 -04:00
currTab = strings.Split(string(v), ".")
otherTab = strings.Split(string(other), ".")
)
2014-10-06 11:41:53 -04:00
max := len(currTab)
if len(otherTab) > max {
max = len(otherTab)
}
for i := 0; i < max; i++ {
2014-10-06 11:41:53 -04:00
var currInt, otherInt int
2014-10-06 11:41:53 -04:00
if len(currTab) > i {
currInt, _ = strconv.Atoi(currTab[i])
}
if len(otherTab) > i {
otherInt, _ = strconv.Atoi(otherTab[i])
}
2014-10-06 11:41:53 -04:00
if currInt > otherInt {
return 1
}
2014-10-06 11:41:53 -04:00
if otherInt > currInt {
return -1
}
}
return 0
}
// LessThan checks if a version is less than another
2014-10-06 11:41:53 -04:00
func (v Version) LessThan(other Version) bool {
return v.compareTo(other) == -1
}
2014-10-06 11:41:53 -04:00
// LessThanOrEqualTo checks if a version is less than or equal to another
func (v Version) LessThanOrEqualTo(other Version) bool {
return v.compareTo(other) <= 0
}
// GreaterThan checks if a version is greater than another
2014-10-06 11:41:53 -04:00
func (v Version) GreaterThan(other Version) bool {
return v.compareTo(other) == 1
}
// GreaterThanOrEqualTo checks if a version is greater than or equal to another
2014-10-06 11:41:53 -04:00
func (v Version) GreaterThanOrEqualTo(other Version) bool {
return v.compareTo(other) >= 0
}
2014-10-06 11:41:53 -04:00
// Equal checks if a version is equal to another
func (v Version) Equal(other Version) bool {
return v.compareTo(other) == 0
}