mirror of https://github.com/restic/restic.git
52 lines
838 B
Go
52 lines
838 B
Go
package khepri
|
|
|
|
import (
|
|
"bytes"
|
|
"sort"
|
|
|
|
"github.com/fd0/khepri/backend"
|
|
)
|
|
|
|
type StorageMap Blobs
|
|
|
|
func NewStorageMap() *StorageMap {
|
|
return &StorageMap{}
|
|
}
|
|
|
|
func (m StorageMap) find(id backend.ID) (int, *Blob) {
|
|
i := sort.Search(len(m), func(i int) bool {
|
|
return bytes.Compare(m[i].ID, id) >= 0
|
|
})
|
|
|
|
if i < len(m) && bytes.Equal(m[i].ID, id) {
|
|
return i, m[i]
|
|
}
|
|
|
|
return i, nil
|
|
}
|
|
|
|
func (m StorageMap) Find(id backend.ID) *Blob {
|
|
_, blob := m.find(id)
|
|
return blob
|
|
}
|
|
|
|
func (m *StorageMap) Insert(blob *Blob) {
|
|
pos, b := m.find(blob.ID)
|
|
if b != nil {
|
|
// already present
|
|
return
|
|
}
|
|
|
|
// insert blob
|
|
// https://code.google.com/p/go-wiki/wiki/SliceTricks
|
|
*m = append(*m, nil)
|
|
copy((*m)[pos+1:], (*m)[pos:])
|
|
(*m)[pos] = blob
|
|
}
|
|
|
|
func (m *StorageMap) Merge(sm *StorageMap) {
|
|
for _, blob := range *sm {
|
|
m.Insert(blob)
|
|
}
|
|
}
|