docker-cli-openbsd/vendor/github.com/theupdateframework/notary/tuf/utils/role_sort.go

32 lines
674 B
Go

package utils
import (
"strings"
)
// RoleList is a list of roles
type RoleList []string
// Len returns the length of the list
func (r RoleList) Len() int {
return len(r)
}
// Less returns true if the item at i should be sorted
// before the item at j. It's an unstable partial ordering
// based on the number of segments, separated by "/", in
// the role name
func (r RoleList) Less(i, j int) bool {
segsI := strings.Split(r[i], "/")
segsJ := strings.Split(r[j], "/")
if len(segsI) == len(segsJ) {
return r[i] < r[j]
}
return len(segsI) < len(segsJ)
}
// Swap the items at 2 locations in the list
func (r RoleList) Swap(i, j int) {
r[i], r[j] = r[j], r[i]
}