fuse: move to top level

fuse/dir.go

@@ -0,0 +1,103 @@
+package fuse
+
+import (
+	"os"
+
+	"bazil.org/fuse"
+	"bazil.org/fuse/fs"
+	"golang.org/x/net/context"
+
+	"github.com/restic/restic"
+	"github.com/restic/restic/repository"
+)
+
+// Statically ensure that *dir implement those interface
+var _ = fs.HandleReadDirAller(&dir{})
+var _ = fs.NodeStringLookuper(&dir{})
+
+type dir struct {
+	repo  *repository.Repository
+	items map[string]*restic.Node
+	inode uint64
+}
+
+func newDir(repo *repository.Repository, node *restic.Node) (*dir, error) {
+	tree, err := restic.LoadTree(repo, *node.Subtree)
+	if err != nil {
+		return nil, err
+	}
+	items := make(map[string]*restic.Node)
+	for _, node := range tree.Nodes {
+		items[node.Name] = node
+	}
+
+	return &dir{
+		repo:  repo,
+		items: items,
+		inode: node.Inode,
+	}, nil
+}
+
+func newDirFromSnapshot(repo *repository.Repository, snapshot SnapshotWithId) (*dir, error) {
+	tree, err := restic.LoadTree(repo, *snapshot.Tree)
+	if err != nil {
+		return nil, err
+	}
+	items := make(map[string]*restic.Node)
+	for _, node := range tree.Nodes {
+		items[node.Name] = node
+	}
+
+	return &dir{
+		repo:  repo,
+		items: items,
+		inode: inodeFromBackendId(snapshot.ID),
+	}, nil
+}
+
+func (d *dir) Attr(ctx context.Context, a *fuse.Attr) error {
+	a.Inode = d.inode
+	a.Mode = os.ModeDir | 0555
+	return nil
+}
+
+func (d *dir) ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) {
+	ret := make([]fuse.Dirent, 0, len(d.items))
+
+	for _, node := range d.items {
+		var typ fuse.DirentType
+		switch node.Type {
+		case "dir":
+			typ = fuse.DT_Dir
+		case "file":
+			typ = fuse.DT_File
+		case "symlink":
+			typ = fuse.DT_Link
+		}
+
+		ret = append(ret, fuse.Dirent{
+			Inode: node.Inode,
+			Type:  typ,
+			Name:  node.Name,
+		})
+	}
+
+	return ret, nil
+}
+
+func (d *dir) Lookup(ctx context.Context, name string) (fs.Node, error) {
+	node, ok := d.items[name]
+	if !ok {
+		return nil, fuse.ENOENT
+	}
+	switch node.Type {
+	case "dir":
+		return newDir(d.repo, node)
+	case "file":
+		return newFile(d.repo, node)
+	case "symlink":
+		return newLink(d.repo, node)
+	default:
+		return nil, fuse.ENOENT
+	}
+}