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- package edit
- import (
- "errors"
- "src.elv.sh/pkg/cli"
- "src.elv.sh/pkg/cli/histutil"
- "src.elv.sh/pkg/cli/modes"
- "src.elv.sh/pkg/cli/tk"
- "src.elv.sh/pkg/eval"
- )
- func initHistWalk(ed *Editor, ev *eval.Evaler, hs *histStore, nb eval.NsBuilder) {
- bindingVar := newBindingVar(emptyBindingsMap)
- bindings := newMapBindings(ed, ev, bindingVar)
- app := ed.app
- nb.AddNs("history",
- eval.BuildNsNamed("edit:history").
- AddVar("binding", bindingVar).
- AddGoFns(map[string]any{
- "start": func() { notifyError(app, histwalkStart(app, hs, bindings)) },
- "up": func() { notifyError(app, histwalkDo(app, modes.Histwalk.Prev)) },
- "down": func() { notifyError(app, histwalkDo(app, modes.Histwalk.Next)) },
- "down-or-quit": func() {
- err := histwalkDo(app, modes.Histwalk.Next)
- if err == histutil.ErrEndOfHistory {
- app.PopAddon()
- } else {
- notifyError(app, err)
- }
- },
- "fast-forward": hs.FastForward,
- }))
- }
- func histwalkStart(app cli.App, hs *histStore, bindings tk.Bindings) error {
- codeArea, ok := focusedCodeArea(app)
- if !ok {
- return nil
- }
- buf := codeArea.CopyState().Buffer
- w, err := modes.NewHistwalk(app, modes.HistwalkSpec{
- Bindings: bindings, Store: hs, Prefix: buf.Content[:buf.Dot]})
- if w != nil {
- app.PushAddon(w)
- }
- return err
- }
- var errNotInHistoryMode = errors.New("not in history mode")
- func histwalkDo(app cli.App, f func(modes.Histwalk) error) error {
- w, ok := app.ActiveWidget().(modes.Histwalk)
- if !ok {
- return errNotInHistoryMode
- }
- return f(w)
- }
- func notifyError(app cli.App, err error) {
- if err != nil {
- app.Notify(modes.ErrorText(err))
- }
- }
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