mirror of https://github.com/octoleo/restic.git
110 lines
1.9 KiB
Go
110 lines
1.9 KiB
Go
package restic
|
|
|
|
import "sort"
|
|
|
|
// BlobSet is a set of blobs.
|
|
type BlobSet map[BlobHandle]struct{}
|
|
|
|
// NewBlobSet returns a new BlobSet, populated with ids.
|
|
func NewBlobSet(handles ...BlobHandle) BlobSet {
|
|
m := make(BlobSet)
|
|
for _, h := range handles {
|
|
m[h] = struct{}{}
|
|
}
|
|
|
|
return m
|
|
}
|
|
|
|
// Has returns true iff id is contained in the set.
|
|
func (s BlobSet) Has(h BlobHandle) bool {
|
|
_, ok := s[h]
|
|
return ok
|
|
}
|
|
|
|
// Insert adds id to the set.
|
|
func (s BlobSet) Insert(h BlobHandle) {
|
|
s[h] = struct{}{}
|
|
}
|
|
|
|
// Delete removes id from the set.
|
|
func (s BlobSet) Delete(h BlobHandle) {
|
|
delete(s, h)
|
|
}
|
|
|
|
// Equals returns true iff s equals other.
|
|
func (s BlobSet) Equals(other BlobSet) bool {
|
|
if len(s) != len(other) {
|
|
return false
|
|
}
|
|
|
|
for h := range s {
|
|
if _, ok := other[h]; !ok {
|
|
return false
|
|
}
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
// Merge adds the blobs in other to the current set.
|
|
func (s BlobSet) Merge(other BlobSet) {
|
|
for h := range other {
|
|
s.Insert(h)
|
|
}
|
|
}
|
|
|
|
// Intersect returns a new set containing the handles that are present in both sets.
|
|
func (s BlobSet) Intersect(other BlobSet) (result BlobSet) {
|
|
result = NewBlobSet()
|
|
|
|
set1 := s
|
|
set2 := other
|
|
|
|
// iterate over the smaller set
|
|
if len(set2) < len(set1) {
|
|
set1, set2 = set2, set1
|
|
}
|
|
|
|
for h := range set1 {
|
|
if set2.Has(h) {
|
|
result.Insert(h)
|
|
}
|
|
}
|
|
|
|
return result
|
|
}
|
|
|
|
// Sub returns a new set containing all handles that are present in s but not in
|
|
// other.
|
|
func (s BlobSet) Sub(other BlobSet) (result BlobSet) {
|
|
result = NewBlobSet()
|
|
for h := range s {
|
|
if !other.Has(h) {
|
|
result.Insert(h)
|
|
}
|
|
}
|
|
|
|
return result
|
|
}
|
|
|
|
// List returns a sorted slice of all BlobHandle in the set.
|
|
func (s BlobSet) List() BlobHandles {
|
|
list := make(BlobHandles, 0, len(s))
|
|
for h := range s {
|
|
list = append(list, h)
|
|
}
|
|
|
|
sort.Sort(list)
|
|
|
|
return list
|
|
}
|
|
|
|
func (s BlobSet) String() string {
|
|
str := s.List().String()
|
|
if len(str) < 2 {
|
|
return "{}"
|
|
}
|
|
|
|
return "{" + str[1:len(str)-1] + "}"
|
|
}
|