// NewEditor creates an Editor.
func NewEditor(file *os.File, sigs chan os.Signal, ev *eval.Evaler, st *store.Store) *Editor {
seq := -1
if st != nil {
var err error
seq, err = st.NextCmdSeq()
if err != nil {
// TODO(xiaq): Also report the error
seq = -1
}
}
prompt, rprompt := defaultPrompts()
ed := &Editor{
file: file,
writer: newWriter(file),
reader: NewReader(file),
sigs: sigs,
store: st,
evaler: ev,
cmdSeq: seq,
ps1: eval.NewPtrVariableWithValidator(prompt, MustBeFn),
rps1: eval.NewPtrVariableWithValidator(rprompt, MustBeFn),
abbreviations: make(map[string]string),
beforeReadLine: eval.NewPtrVariableWithValidator(
eval.NewList(), eval.IsListOfFnValue),
afterReadLine: eval.NewPtrVariableWithValidator(
eval.NewList(), eval.IsListOfFnValue),
}
ev.Editor = ed
ev.Modules["le"] = makeModule(ed)
return ed
}
func newHistoryListing(s *store.Store) (*historyListing, error) {
seq, err := s.NextCmdSeq()
if err != nil {
return nil, err
}
cmds, err := s.Cmds(seq-100, seq)
if err != nil {
return nil, err
}
return &historyListing{cmds}, nil
}
// NewEditor creates an Editor.
func NewEditor(file *os.File, sigs <-chan os.Signal, st *store.Store) *Editor {
seq := -1
if st != nil {
var err error
seq, err = st.NextCmdSeq()
if err != nil {
// TODO(xiaq): Also report the error
seq = -1
}
}
return &Editor{
file: file,
writer: newWriter(file),
reader: NewReader(file),
sigs: sigs,
store: st,
cmdSeq: seq,
}
}
func newHistlist(s *store.Store) (*histlist, error) {
if s == nil {
return nil, ErrStoreOffline
}
seq, err := s.NextCmdSeq()
if err != nil {
return nil, err
}
all, err := s.Cmds(0, seq)
if err != nil {
return nil, err
}
last := make(map[string]int)
for i, entry := range all {
last[entry] = i
}
hl := &histlist{all: all, last: last, indexWidth: len(strconv.Itoa(len(all) - 1))}
hl.listing = newListing(modeHistoryListing, hl)
return hl, nil
}
// NewEditor creates an Editor.
func NewEditor(file *os.File, sigs chan os.Signal, ev *eval.Evaler, st *store.Store) *Editor {
seq := -1
if st != nil {
var err error
seq, err = st.NextCmdSeq()
if err != nil {
// TODO(xiaq): Also report the error
seq = -1
}
}
ed := &Editor{
file: file,
writer: newWriter(file),
reader: NewReader(file),
sigs: sigs,
store: st,
evaler: ev,
cmdSeq: seq,
}
ev.Editor = ed
return ed
}