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package main
import (
"bytes"
"errors"
"fmt"
"io"
"log"
"os"
"github.com/charmbracelet/x/exp/term"
"github.com/charmbracelet/x/exp/term/ansi"
"github.com/charmbracelet/x/exp/term/input"
)
func init() {
// suppress logger time prefix
log.SetFlags(0)
}
func main() {
var in io.Reader = os.Stdin
if !term.IsTerminal(os.Stdin.Fd()) {
bts, err := io.ReadAll(os.Stdin)
if err != nil {
log.Fatalf("error reading from stdin: %v\r\n", err)
}
in = bytes.NewReader(bts)
} else {
state, err := term.MakeRaw(os.Stdin.Fd())
if err != nil {
log.Fatalf("error making raw: %v", err)
}
defer term.Restore(os.Stdin.Fd(), state)
}
defer disableMouse()
defer execute(ansi.DisableKittyKeyboard)
defer execute(ansi.DisableModifyOtherKeys)
defer execute(ansi.DisableWin32Input)
rd, err := input.NewDriver(in, os.Getenv("TERM"), 0)
if err != nil {
log.Printf("error creating driver: %v\r\n", err)
return
}
defer rd.Cancel()
defer rd.Close()
printHelp()
var (
kittyFlags int
paste bool
mouse bool
mouseHilite bool
mouseCell bool
mouseAll bool
mouseExt bool
win32Input bool
)
last := input.Event(nil)
OUT:
for {
events, err := rd.ReadEvents()
if err == io.EOF {
break
}
if err != nil {
if errors.Is(err, input.ErrUnknownEvent) {
log.Printf("%v\r\n", err)
continue
}
log.Fatalf("error reading input: %v\r\n", err)
}
if last != nil && len(events) > 0 {
currKey, ok1 := events[len(events)-1].(input.KeyDownEvent)
prevKey, ok2 := last.(input.KeyDownEvent)
if ok1 && ok2 && currKey.Sym == 0 && prevKey.Sym == 0 {
prev := prevKey.String()
curr := currKey.String()
switch {
case prev == "q" && curr == "q":
break OUT
case prev == "h" && curr == "h":
printHelp()
case prev == "p" && curr == "p":
if paste {
execute(ansi.DisableBracketedPaste)
} else {
execute(ansi.EnableBracketedPaste)
}
paste = !paste
case prev == "w" && curr == "m":
if win32Input {
execute(ansi.DisableWin32Input)
} else {
execute(ansi.EnableWin32Input)
}
win32Input = !win32Input
case "c" == prev && "c" == curr:
execute(ansi.RequestClipboard('c'))
case prev == "k":
switch curr {
case "0":
kittyFlags = 0
execute(ansi.PopKittyKeyboard(kittyFlags))
case "1":
if kittyFlags&ansi.KittyDisambiguateEscapeCodes == 0 {
kittyFlags |= ansi.KittyDisambiguateEscapeCodes
execute(ansi.PushKittyKeyboard(kittyFlags))
} else {
kittyFlags &^= ansi.KittyDisambiguateEscapeCodes
execute(ansi.PopKittyKeyboard(kittyFlags))
}
case "2":
if kittyFlags&ansi.KittyReportEventTypes == 0 {
kittyFlags |= ansi.KittyReportEventTypes
execute(ansi.PushKittyKeyboard(kittyFlags))
} else {
kittyFlags &^= ansi.KittyReportEventTypes
execute(ansi.PopKittyKeyboard(kittyFlags))
}
case "3":
if kittyFlags&ansi.KittyReportAlternateKeys == 0 {
kittyFlags |= ansi.KittyReportAlternateKeys
execute(ansi.PushKittyKeyboard(kittyFlags))
} else {
kittyFlags &^= ansi.KittyReportAlternateKeys
execute(ansi.PopKittyKeyboard(kittyFlags))
}
case "4":
if kittyFlags&ansi.KittyReportAllKeys == 0 {
kittyFlags |= ansi.KittyReportAllKeys
execute(ansi.PushKittyKeyboard(kittyFlags))
} else {
kittyFlags &^= ansi.KittyReportAllKeys
execute(ansi.PopKittyKeyboard(kittyFlags))
}
case "5":
if kittyFlags&ansi.KittyReportAssociatedKeys == 0 {
kittyFlags |= ansi.KittyReportAssociatedKeys
execute(ansi.PushKittyKeyboard(kittyFlags))
} else {
kittyFlags &^= ansi.KittyReportAssociatedKeys
execute(ansi.PopKittyKeyboard(kittyFlags))
}
}
case prev == "x":
switch curr {
case "0":
execute(ansi.DisableModifyOtherKeys)
case "1":
execute(ansi.EnableModifyOtherKeys1)
case "2":
execute(ansi.EnableModifyOtherKeys2)
}
case prev == "r":
switch curr {
case "a":
execute(ansi.RequestAltScreenBuffer)
case "k":
execute(ansi.RequestKittyKeyboard)
case "b":
execute(ansi.RequestBackgroundColor)
case "f":
execute(ansi.RequestForegroundColor)
case "c":
execute(ansi.RequestCursorColor)
case "p":
execute(ansi.RequestCursorPosition)
case "P":
execute(ansi.RequestExtendedCursorPosition)
case "d":
execute(ansi.RequestPrimaryDeviceAttributes)
case "x":
execute(ansi.RequestXTVersion)
case "t":
execute(ansi.RequestTermcap("kbs", "colors", "RGB", "Tc", "cols"))
}
case prev == "m":
switch string(currKey.Rune) {
case "0":
disableMouse()
case "1":
if mouse {
execute(ansi.DisableMouse)
} else {
execute(ansi.EnableMouse)
}
mouse = !mouse
case "2":
if mouseHilite {
execute(ansi.DisableMouseHilite)
} else {
execute(ansi.EnableMouseHilite)
}
mouseHilite = !mouseHilite
case "3":
if mouseCell {
execute(ansi.DisableMouseCellMotion)
} else {
execute(ansi.EnableMouseCellMotion)
}
mouseCell = !mouseCell
case "4":
if mouseAll {
execute(ansi.DisableMouseAllMotion)
} else {
execute(ansi.EnableMouseAllMotion)
}
mouseAll = !mouseAll
case "5":
if mouseExt {
execute(ansi.DisableMouseSgrExt)
} else {
execute(ansi.EnableMouseSgrExt)
}
mouseExt = !mouseExt
}
}
}
}
for _, e := range events {
log.Printf("%T %v\r\n", e, e)
}
// Store last keypress
if len(events) > 0 {
key, ok := events[len(events)-1].(input.KeyDownEvent)
if ok {
last = key
}
}
}
}
func execute(s string) {
io.WriteString(os.Stdout, s) // nolint: errcheck
}
func disableMouse() {
execute(ansi.DisableMouseSgrExt)
execute(ansi.DisableMouseAllMotion)
execute(ansi.DisableMouseCellMotion)
execute(ansi.DisableMouseHilite)
execute(ansi.DisableMouse)
}
func printHelp() {
fmt.Fprintf(os.Stdout, "Welcome to input demo!\r\n\r\n")
fmt.Fprintf(os.Stdout, "Press 'qq' to quit.\r\n")
fmt.Fprintf(os.Stdout, "Press 'hh' to print this help again.\r\n")
fmt.Fprintf(os.Stdout, "Press 'pp' to toggle bracketed paste mode.\r\n")
fmt.Fprintf(os.Stdout, "Press 'wm' to toggle Win32 input mode.\r\n")
fmt.Fprintf(os.Stdout, "Press 'x' followed by a number to toggle XTerm modifyOtherKeys.\r\n")
fmt.Fprintf(os.Stdout, " 0: Disable modifyOtherKeys\r\n")
fmt.Fprintf(os.Stdout, " 1: Enable modifyOtherKeys mode 1\r\n")
fmt.Fprintf(os.Stdout, " 2: Enable modifyOtherKeys mode 2\r\n")
fmt.Fprintf(os.Stdout, "Press 'k' followed by a number to toggle Kitty keyboard protocol flags.\r\n")
fmt.Fprintf(os.Stdout, " 0: Disable all flags\r\n")
fmt.Fprintf(os.Stdout, " 1: DisambiguateEscapeCodes\r\n")
fmt.Fprintf(os.Stdout, " 2: ReportEventTypes\r\n")
fmt.Fprintf(os.Stdout, " 3: ReportAlternateKeys\r\n")
fmt.Fprintf(os.Stdout, " 4: ReportAllKeys\r\n")
fmt.Fprintf(os.Stdout, " 5: ReportAssociatedKeys\r\n")
fmt.Fprintf(os.Stdout, "\r\n")
fmt.Fprintf(os.Stdout, "Press 'm' followed by a number to toggle mouse events.\r\n")
fmt.Fprintf(os.Stdout, " 0: Disable all mouse events\r\n")
fmt.Fprintf(os.Stdout, " 1: Enable mouse events\r\n")
fmt.Fprintf(os.Stdout, " 2: Enable mouse events with highlighting\r\n")
fmt.Fprintf(os.Stdout, " 3: Enable mouse events with cell motion\r\n")
fmt.Fprintf(os.Stdout, " 4: Enable all mouse events\r\n")
fmt.Fprintf(os.Stdout, " 5: Enable extended mouse events (SGR)\r\n")
fmt.Fprintf(os.Stdout, "\r\n")
fmt.Fprintf(os.Stdout, "Press 'r' followed by a letter to request a terminal capability.\r\n")
fmt.Fprintf(os.Stdout, " a: Alt buffer mode\r\n")
fmt.Fprintf(os.Stdout, " k: Kitty keyboard protocol flags\r\n")
fmt.Fprintf(os.Stdout, " b: Background color\r\n")
fmt.Fprintf(os.Stdout, " f: Foreground color\r\n")
fmt.Fprintf(os.Stdout, " c: Cursor color\r\n")
fmt.Fprintf(os.Stdout, " p: Cursor position\r\n")
fmt.Fprintf(os.Stdout, " P: Extended cursor position\r\n")
fmt.Fprintf(os.Stdout, " d: Primary Device Attributes\r\n")
fmt.Fprintf(os.Stdout, " x: XTVERSION\r\n")
fmt.Fprintf(os.Stdout, " t: XTGETTCAP\r\n")
fmt.Fprintf(os.Stdout, "\r\n")
}
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