/
dirset.go
83 lines (70 loc) · 1.89 KB
/
dirset.go
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// Copyright 2015 Bobby Powers. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package slackfs
import (
"fmt"
)
type DirOwner interface {
DirNode() *DirNode
}
// DirCreator matches the signature of New{Channel,Group,IM}Dir
type DirCreator func(parent *DirNode, name string, priv interface{}) (*DirNode, error)
type DirSet struct {
dn *DirNode // us
parent *DirNode
byName *DirNode // by-name child dir
byId *DirNode // by-id child dir
create DirCreator
objDirs map[string]*DirNode
objSyms map[string]*SymlinkNode
}
func NewDirSet(parent *DirNode, name string, create DirCreator, priv interface{}) (ds *DirSet, err error) {
ds = new(DirSet)
ds.create = create
ds.dn, err = NewDirNode(parent, name, priv)
if err != nil {
return nil, fmt.Errorf("NewDirNode('%s'): %s", name, err)
}
ds.byName, err = NewDirNode(ds.dn, "by-name", priv)
if err != nil {
return nil, fmt.Errorf("NewDirNode(by-name): %s", err)
}
ds.byId, err = NewDirNode(ds.dn, "by-id", priv)
if err != nil {
return nil, fmt.Errorf("NewDirNode(by-id): %s", err)
}
ds.objDirs = make(map[string]*DirNode)
ds.objSyms = make(map[string]*SymlinkNode)
return
}
func (ds *DirSet) LookupId(id string) *DirNode {
return ds.objDirs[id]
}
func (ds *DirSet) Container() *DirNode {
return ds.byId
}
func (ds *DirSet) Add(id, name string, priv interface{}) error {
child, err := (ds.create)(ds.byId, id, priv)
if err != nil {
return fmt.Errorf("ds.create(%s): %s", id, err)
}
ds.objDirs[id] = child
s, err := NewSymlinkNode(ds.byName, name, child)
if err != nil {
return fmt.Errorf("NewSymlinkNode(%s): %s", name, err)
}
ds.objSyms[name] = s
return nil
}
func (ds *DirSet) Activate() {
for _, n := range ds.objDirs {
n.Activate()
}
ds.byId.Activate()
for _, n := range ds.objSyms {
n.Activate()
}
ds.byName.Activate()
ds.dn.Activate()
}