func attr(aname string, v1 value) (value, error) {
fname, ok := v1.(string)
if !ok {
return nil, errors.New("not a file name")
}
d, err := nsutil.Stat(fname)
if err != nil {
return nil, err
}
if aname == "r" {
return d.Int("mode")&0444 != 0, nil
}
if aname == "w" {
return d.Int("mode")&0222 != 0, nil
}
if aname == "x" {
return d.Int("mode")&0111 != 0, nil
}
if aname == "mode" {
return fmt.Sprintf("0%o", d.Int("mode")&0777), nil
}
if aname == "size" {
return int64(d.Int64("size")), nil
}
if aname == "mtime" {
return d.Time("mtime"), nil
}
return d[aname], nil
}
// runs here
func runCd(x *xEnv, argv ...string) error {
opts := opt.New("")
app.Dprintf("cd %v\n", argv)
args, err := opts.Parse(argv)
if err != nil {
opts.Usage()
return dbg.ErrUsage
}
if len(args) != 0 {
opts.Usage()
return dbg.ErrUsage
}
m, ok := <-app.In()
if !ok {
err = cerror(app.In())
app.Warn("%s", err)
return err
}
d, ok := m.(zx.Dir)
if !ok {
b, ok := m.([]byte)
if !ok {
app.Warn("%s", dbg.ErrNotDir)
return dbg.ErrNotDir
}
s := string(b)
d, err = nsutil.Stat(s)
if err != nil {
app.Warn("%s: %s", s, err)
return err
}
}
if d["type"] != "d" {
app.Warn("%s: %s", d["path"], dbg.ErrNotDir)
return dbg.ErrNotDir
}
app.Cd(d["path"])
out := app.Out()
if out != nil {
out <- d
}
return nil
}