func sh(dflt string) string {
if dflt != "" {
return dflt
}
// NB: Don't use SHELL, to leave unix alone.
if c := app.GetEnv("shell"); c != "" {
return c
}
return "rc"
}
func GetEnvAt(name, idxs string) ([]string, error) {
s := app.GetEnv(name)
if len(s) == 0 {
return nil, nil
}
if strings.Contains(s, "\a") {
m := envMap(s)
if idxs == "" {
return mapNames(m), nil
}
s := m[idxs]
return []string{s}, nil
}
toks := strings.SplitN(s, "\b", -1)
return idx(toks, idxs)
}
func (x *xEnv) ntype(nm string) string {
if bltin[nm] != nil {
return "builtin"
}
if x.funcs[nm] != nil {
return "func"
}
if app.GetEnv(nm) != "" {
return "env"
}
path := x.lookCmd(nm)
if path != "" {
path = ": " + path
}
return "external" + path
}
func SetEnvAt(name, idx string, val string) error {
s := app.GetEnv(name)
ismap := strings.Contains(s, "\a")
n, err := strconv.ParseInt(idx, 10, 32)
i := int(n)
if err == nil && !ismap {
toks := strings.SplitN(s, "\b", -1)
if i == len(toks) {
toks = append(toks, val)
} else if i < 0 || i > len(toks) {
return fmt.Errorf("bad index '%s' for '%s'", idx, name)
} else {
toks[i] = val
}
SetEnvList(name, toks...)
return nil
}
m := envMap(name)
m[idx] = val
SetEnvMap(name, m)
return nil
}
func GetEnvMap(n string) map[string]string {
return envMap(app.GetEnv(n))
}