Finish porting of ask kitten to Go

tools/cmd/ask/get_line.go

@@ -0,0 +1,93 @@
+// License: GPLv3 Copyright: 2023, Kovid Goyal, <kovid at kovidgoyal.net>
+
+package ask
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"time"
+
+	"kitty/tools/tui/loop"
+	"kitty/tools/tui/readline"
+	"kitty/tools/utils"
+)
+
+var _ = fmt.Print
+
+func get_line(o *Options, items []string) (result map[string]any, err error) {
+	lp, err := loop.New(loop.NoAlternateScreen, loop.NoRestoreColors)
+	if err != nil {
+		return
+	}
+	cwd, _ := os.Getwd()
+	result = map[string]any{"items": items, "response": ""}
+	ropts := readline.RlInit{Prompt: o.Prompt}
+	if o.Name != "" {
+		base := filepath.Join(utils.CacheDir(), "ask")
+		ropts.HistoryPath = filepath.Join(base, o.Name+".history.json")
+		os.MkdirAll(base, 0o755)
+	}
+	rl := readline.New(lp, ropts)
+	if o.Default != "" {
+		rl.SetText(o.Default)
+	}
+	lp.OnInitialize = func() (string, error) {
+		rl.Start()
+		return "", nil
+	}
+	lp.OnFinalize = func() string { rl.End(); return "" }
+
+	lp.OnResumeFromStop = func() error {
+		rl.Start()
+		return nil
+	}
+
+	lp.OnResize = rl.OnResize
+
+	lp.OnKeyEvent = func(event *loop.KeyEvent) error {
+		if event.MatchesPressOrRepeat("ctrl+c") {
+			return fmt.Errorf("Canceled by user")
+		}
+		err := rl.OnKeyEvent(event)
+		if err != nil {
+			if err == io.EOF {
+				lp.Quit(0)
+				return nil
+			}
+			if err == readline.ErrAcceptInput {
+				hi := readline.HistoryItem{Timestamp: time.Now(), Cmd: rl.AllText(), ExitCode: 0, Cwd: cwd}
+				rl.AddHistoryItem(hi)
+				result["response"] = rl.AllText()
+				lp.Quit(0)
+				return nil
+			}
+			return err
+		}
+		if event.Handled {
+			rl.Redraw()
+			return nil
+		}
+		return nil
+	}
+
+	lp.OnText = func(text string, from_key_event, in_bracketed_paste bool) error {
+		err := rl.OnText(text, from_key_event, in_bracketed_paste)
+		if err == nil {
+			rl.Redraw()
+		}
+		return err
+	}
+
+	err = lp.Run()
+	rl.Shutdown()
+	if err != nil {
+		return nil, err
+	}
+	ds := lp.DeathSignalName()
+	if ds != "" {
+		return nil, fmt.Errorf("Killed by signal: %s", ds)
+	}
+	return
+}

tools/cmd/ask/main.go

@@ -34,7 +34,7 @@ func main(_ *cli.Command, o *Options, args []string) (rc int, err error) {
 		}
 	case "password":
 		show_message(o.Message)
-		pw, err := tui.ReadPassword(o.Prompt, true)
+		pw, err := tui.ReadPassword(o.Prompt, false)
 		if err != nil {
 			if errors.Is(err, tui.Canceled) {
 				pw = ""
@@ -43,6 +43,12 @@ func main(_ *cli.Command, o *Options, args []string) (rc int, err error) {
 			}
 		}
 		result = map[string]any{"items": args, "response": pw}
+	case "line":
+		show_message(o.Message)
+		result, err = get_line(o, args)
+		if err != nil {
+			return 1, err
+		}
 	default:
 		return 1, fmt.Errorf("Unknown type: %s", o.Type)
 	}