func loadTree(s store.Store, hash string) (*Tree, error) {
bs, err := s.Get(hash)
if err != nil {
return nil, err
}
return unmarshalTree(bs)
}
func makeTree(s store.Store, v *view) (string, error) {
var dirs []string
trees := make(map[string]*Tree)
for name, d := range v.Dirs {
dirs = append(dirs, name)
trees[name] = newTree(d)
if !path.IsAbs(name) {
return "", fmt.Errorf("invalid dir in view: %q", name)
}
}
sort.Strings(dirs)
ndir := len(dirs)
for i := ndir - 1; i >= 0; i-- {
name := dirs[i]
t := trees[name]
bs, err := json.Marshal(t)
if err != nil {
return "", err
}
hash, err := s.Put(bs)
if err != nil {
return "", err
}
if name == "/" {
return hash, nil
}
parent, base := path.Split(name)
if parent != "/" {
parent = strings.TrimSuffix(parent, "/")
}
parentTree := trees[parent]
if parentTree == nil {
return "", fmt.Errorf("dangling dir: %q", name)
}
if _, found := parentTree.Nodes[base]; found {
return "", fmt.Errorf("duplicate entry: %q", name)
}
parentTree.Nodes[base] = &TreeNode{IsTree: true, Hash: hash}
}
return "", fmt.Errorf("root dir missing")
}