restic/walk.go

63 lines
1.4 KiB
Go

package restic
import (
"path/filepath"
"github.com/restic/restic/backend"
"github.com/restic/restic/debug"
"github.com/restic/restic/repository"
)
type WalkTreeJob struct {
Path string
Error error
Node *Node
Tree *Tree
}
func walkTree(repo *repository.Repository, path string, treeID backend.ID, done chan struct{}, jobCh chan<- WalkTreeJob) {
debug.Log("walkTree", "start on %q (%v)", path, treeID.Str())
t, err := LoadTree(repo, treeID)
if err != nil {
select {
case jobCh <- WalkTreeJob{Path: path, Error: err}:
case <-done:
return
}
return
}
for _, node := range t.Nodes {
p := filepath.Join(path, node.Name)
if node.Type == "dir" {
walkTree(repo, p, node.Subtree, done, jobCh)
} else {
select {
case jobCh <- WalkTreeJob{Path: p, Node: node}:
case <-done:
return
}
}
}
select {
case jobCh <- WalkTreeJob{Path: path, Tree: t}:
case <-done:
return
}
debug.Log("walkTree", "done for %q (%v)", path, treeID.Str())
}
// WalkTree walks the tree specified by id recursively and sends a job for each
// file and directory it finds. When the channel done is closed, processing
// stops.
func WalkTree(repo *repository.Repository, id backend.ID, done chan struct{}, jobCh chan<- WalkTreeJob) {
debug.Log("WalkTree", "start on %v", id.Str())
walkTree(repo, "", id, done, jobCh)
close(jobCh)
debug.Log("WalkTree", "done")
}