func (fac FnAsArgCompleter) Complete(words []string, ed *Editor) ([]*candidate, error) {
in, err := makeClosedStdin()
if err != nil {
return nil, err
}
ports := []*eval.Port{in, &eval.Port{File: os.Stdout}, &eval.Port{File: os.Stderr}}
wordValues := make([]eval.Value, len(words))
for i, word := range words {
wordValues[i] = eval.String(word)
}
// XXX There is no source to pass to NewTopEvalCtx.
ec := eval.NewTopEvalCtx(ed.evaler, "[editor completer]", "", ports)
values, err := ec.PCaptureOutput(fac.Fn, wordValues)
if err != nil {
ed.notify("completer error: %v", err)
return nil, err
}
cands := make([]*candidate, len(values))
for i, v := range values {
s := eval.ToString(v)
cands[i] = &candidate{text: s}
}
return cands, nil
}
func (hv History) IndexOne(idx eval.Value) eval.Value {
hv.mutex.RLock()
defer hv.mutex.RUnlock()
slice, i, j := eval.ParseAndFixListIndex(eval.ToString(idx), hv.Len())
if slice {
cmds, err := hv.st.Cmds(i+1, j+1)
maybeThrow(err)
vs := make([]eval.Value, len(cmds))
for i := range cmds {
vs[i] = eval.String(cmds[i])
}
return eval.NewList(vs...)
}
s, err := hv.st.Cmd(i + 1)
maybeThrow(err)
return eval.String(s)
}
// callFnAsPrompt calls a Fn with closed input, captures its output and convert
// the output to a slice of *styled's.
func callFnForPrompt(ed *Editor, fn eval.Fn) []*styled {
ports := []*eval.Port{eval.DevNullClosedChan, &eval.Port{File: os.Stdout}, &eval.Port{File: os.Stderr}}
// XXX There is no source to pass to NewTopEvalCtx.
ec := eval.NewTopEvalCtx(ed.evaler, "[editor prompt]", "", ports)
values, err := ec.PCaptureOutput(fn, nil, eval.NoOpts)
if err != nil {
ed.Notify("prompt function error: %v", err)
return nil
}
var ss []*styled
for _, v := range values {
if s, ok := v.(*styled); ok {
ss = append(ss, s)
} else {
ss = append(ss, &styled{eval.ToString(v), ""})
}
}
return ss
}