v0.5.1 console key releases: Linux VT and FreeBSD vt(4), with a guard
* linux console source: releases from the console's own keyboard, typed by its keymap SetKeyReport with KeySourceConsole, on a Linux virtual console the game runs on, switches the keyboard to raw keycodes (K_MEDIUMRAW) while releases are reported. The kernel allows the switch on the caller's controlling tty, so no root is needed; a console that refuses is not asked again and the protocol is next. Going back to presses, Fini and EmergencyReset switch it back. Each keycode is typed as the console types it cooked, after drivers/tty/vt/keyboard.c, by the console's own tables read at the switch (KDGKBENT, KDGKBSENT, KDGKBDIACRUC, KDGKBMETA): modifiers and their left and right groups, Caps and Num Lock with their lights kept in step (KDSKBLED), sticky and locked modifiers, Unicode entries, dead keys and compose, the keypad by Num Lock, function strings, Meta as ESC prefix or bit 7, console switching by Alt+Fn and Alt+arrows to consoles in use, and from kernel 7.1 cursor and CSI keys with their modifiers. Translation starts from the console's modifiers and locks (TIOCLINUX 6, KDGKBLED). Each key is held by its keycode; a key typing several keys taps all but its last. Switching to another console ends every hold Lost. Mouse reports are off while the keyboard is raw, since the console types them into the same input, and come back after it. The guard: before the first switch the package runs the binary again, named console-guard, holding the console and the read end of a pipe only the game writes. If the pipe ends while the keyboard is raw (kill -9, the OOM killer, a Go fatal error), the guard switches the keyboard back, restores the termios the game found and shows the cursor, without a reset that would clear the game's last words. A game leading its console's session takes the console with it as it dies; its guard then leads a session of its own and opens the console again once the kernel has hung it up, to restore it. Checked in QEMU on a real VT, kernels 6.8 and 7.2, the game as uid 1000: the same key strokes read identically raw and cooked (Shift released first, Ctrl, Alt, AltGr, Caps and Num Lock, the keypad, function keys, modified cursor keys on 7.2; dead grave and tilde, compose, a euro sign and Cyrillic from a loaded keymap), Alt+F2 away ended the hold Lost and Alt+F1 came back, and the keyboard came back to K_UNICODE with ICANON and ECHO after Fini, a panic with EmergencyReset, kill -9, and kill -9 of a game leading its session (left raw without the guard's own session). Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01B3zCVjspRDuEuMrDTumVhp * freebsd console source: releases from vt(4)'s keyboard, typed by its keymap On FreeBSD's vt(4) console the keyboard switches to keycodes (K_CODE), which vt allows any process with the console open, no root needed. Each keycode types what vt types for it cooked: the keyboard's keymap and accent map (GIO_KEYMAP, GIO_DEADKEYMAP) run through a port of the kernel's genkbd_keyaction, kbdmux's left Alt keypad codes, and vt_processkey's xterm sequences, ESC for Alt and console switching. The locks go back to the keyboard and its lights with KDSKBSTATE. Scroll Lock is inert while raw; with the console's history mode on (Scroll Lock lit) the keyboard stays as it is and the ask reports presses. Shared with the Linux source now: the restore EmergencyReset runs, the guard, which opens again a console revoked or hung up with its session's leader, and what a key asks of the console. A console that can't go raw just now (Scroll Lock on, its guard gone, output not drained) is tried again at the next ask rather than never; a refusal at prepare still holds for good. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01B3zCVjspRDuEuMrDTumVhp * example-keys: show each key event, for trying key releases A viewer for the key events a terminal or console reports: F2 asks for releases from the console or the terminal's protocol, or gives them back, and the report each ask came to shows above the events. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01B3zCVjspRDuEuMrDTumVhp --------- Co-authored-by: Claude <noreply@anthropic.com>
This commit is contained in:
LixenandClaude Opus 5.5 authored and GitHub committed
1 parent
97f66b1f1c
commit
d6fc58a1e5
23 files changed
+3580
-9
No files matched your search
@@ -281,6 +281,53 @@ While releases are reported:
|
||||
Releases come from the first of these sources a game allows that the
|
||||
terminal has:
|
||||
|
||||
- `KeySourceConsole`: the kernel console's own keyboard, on the console the
|
||||
game runs on: a Linux VT (`/dev/ttyN`) or FreeBSD's vt(4) (`/dev/ttyvN`).
|
||||
While releases are reported the package switches the keyboard to raw
|
||||
keycodes, which the kernel allows without root (Linux's `K_MEDIUMRAW` on
|
||||
the game's controlling tty, FreeBSD's `K_CODE` on a console the game has
|
||||
open), and switches it back when the game goes back to presses, at `Fini`
|
||||
and in `EmergencyReset`. Each key types what the console types for it
|
||||
cooked, by the console's own keymap read at the switch. Switching to
|
||||
another console ends the holds. The console's mouse reports pause while the
|
||||
keyboard is raw, and a mouse paste then reads as keys. Never over ssh,
|
||||
where the keyboard is the far terminal's.
|
||||
|
||||
On Linux that is `loadkeys` layouts, dead keys and compose, the locks and
|
||||
their lights, Alt+F*n* and Alt+arrows switching consoles, and cursor keys
|
||||
with modifiers from Linux 7.1. Left out while raw: codes typed with Alt on
|
||||
the keypad, braille, Ctrl+Alt+Del, and Scroll Lock, which only lets stopped
|
||||
output go on.
|
||||
|
||||
On FreeBSD it is `kbdmap` layouts and their accents, the locks and their
|
||||
lights, Alt+F*n* and Print Screen switching consoles, codes typed with left
|
||||
Alt on the keypad, and Alt as ESC before a character (right Alt too with
|
||||
`kern.vt.enable_altgr=0`). Left out while raw: the machine's keys
|
||||
(Ctrl+Alt+Del, the debugger, suspend), Shift+Insert's paste, and Scroll
|
||||
Lock. With Scroll Lock on, the console's history mode takes every key, so
|
||||
the keyboard stays as it is and the ask reports presses; an ask after
|
||||
Scroll Lock goes off tries again. syscons (`kern.vty=sc`) has no console
|
||||
source.
|
||||
|
||||
Before the first switch the package runs the game's binary again as
|
||||
`console-guard`, which switches the keyboard back, restores the tty and
|
||||
shows the cursor if the game dies where nothing of its own runs: `kill -9`,
|
||||
the OOM killer, a Go fatal error. A game leading its console's session
|
||||
(on Linux, run with `exec` from the login shell or by an autologin) takes
|
||||
the console with it as it dies; the guard then opens it again to restore
|
||||
it. The package's `init` turns the guard's run aside before `main`; the
|
||||
`init`s of packages initialized before it run in the guard too, so keep
|
||||
side effects out of them. On FreeBSD the guard goes by the game's name, so
|
||||
`pkill -9` by that name ends it too: kill the game by its PID. Should the
|
||||
guard be killed as well, switch the keyboard back from elsewhere: on Linux
|
||||
`sudo kbd_mode -u -C /dev/ttyN`; FreeBSD has no command for it, so build
|
||||
one:
|
||||
|
||||
```sh
|
||||
printf '#include <sys/ioctl.h>\n#include <sys/kbio.h>\nint main(void) { return ioctl(0, KDSKBMODE, K_XLATE); }\n' |
|
||||
cc -x c -o /tmp/kbdxlate - && /tmp/kbdxlate < /dev/ttyvN
|
||||
```
|
||||
|
||||
- `KeySourceProtocol`: the terminal's key event protocol, CSI u with event
|
||||
types. The package asks the terminal whether it has the protocol (`CSI ? u`,
|
||||
fenced by a DA1 request every terminal answers), pushes its flags and
|
||||
|
||||
+18
-2
@@ -20,6 +20,7 @@ type unixBackend struct {
|
||||
outFd int
|
||||
tty *os.File // the controlling terminal, opened for a redirected end
|
||||
oldTerm *term.State
|
||||
console keyConsole // the console input comes from, nil off one
|
||||
|
||||
resizeStopCh chan struct{}
|
||||
resizeDoneCh chan struct{}
|
||||
@@ -56,12 +57,14 @@ func (b *unixBackend) Init() error {
|
||||
}
|
||||
}
|
||||
|
||||
cooked, _ := unix.IoctlGetTermios(b.inFd, tcgets)
|
||||
old, err := term.MakeRaw(b.inFd)
|
||||
if err != nil {
|
||||
b.closeTTY()
|
||||
return err
|
||||
}
|
||||
b.oldTerm = old
|
||||
b.console = openConsole(b.in, cooked)
|
||||
return nil
|
||||
}
|
||||
|
||||
@@ -79,6 +82,10 @@ func (b *unixBackend) Fini() {
|
||||
<-b.resizeDoneCh
|
||||
b.resizeStopCh = nil
|
||||
}
|
||||
if b.console != nil {
|
||||
b.console.close()
|
||||
b.console = nil
|
||||
}
|
||||
if b.oldTerm != nil {
|
||||
term.Restore(b.inFd, b.oldTerm)
|
||||
}
|
||||
@@ -160,8 +167,17 @@ func (b *unixBackend) Read(stopCh <-chan struct{}) ([]byte, error) {
|
||||
}
|
||||
}
|
||||
|
||||
// keySources: the key protocol, which the terminal is asked about
|
||||
func (b *unixBackend) keySources() KeySource { return KeySourceProtocol }
|
||||
// keySources: the console's keyboard on a console, and the key protocol,
|
||||
// which the terminal is asked about
|
||||
func (b *unixBackend) keySources() KeySource {
|
||||
if b.console != nil {
|
||||
return KeySourceConsole | KeySourceProtocol
|
||||
}
|
||||
return KeySourceProtocol
|
||||
}
|
||||
|
||||
// keyConsole is the console input comes from, nil off one
|
||||
func (b *unixBackend) keyConsole() keyConsole { return b.console }
|
||||
|
||||
func (b *unixBackend) SetResizeHandler(handler func(width, height int)) {
|
||||
b.resizeStopCh = make(chan struct{})
|
||||
|
||||
@@ -0,0 +1,148 @@
|
||||
// keys — shows each key event the terminal reports, for trying key releases
|
||||
// where a game runs: a Linux or FreeBSD console, Alacritty, ssh, tmux.
|
||||
//
|
||||
// Keys: F2 asks for releases or gives them back · Ctrl+C quits
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"os"
|
||||
"strings"
|
||||
|
||||
"github.com/lixenwraith/terminal"
|
||||
)
|
||||
|
||||
func main() {
|
||||
term := terminal.New()
|
||||
|
||||
// Raw-mode safety net: restore the terminal before re-panicking.
|
||||
defer func() {
|
||||
if r := recover(); r != nil {
|
||||
terminal.EmergencyReset(os.Stdout)
|
||||
panic(r)
|
||||
}
|
||||
}()
|
||||
|
||||
if err := term.Init(); err != nil {
|
||||
fmt.Fprintln(os.Stderr, "terminal init:", err)
|
||||
os.Exit(1)
|
||||
}
|
||||
defer term.Fini()
|
||||
|
||||
v := &viewer{term: term}
|
||||
v.ask(true)
|
||||
for {
|
||||
v.draw()
|
||||
ev := term.PollEvent()
|
||||
switch ev.Type {
|
||||
case terminal.EventClosed, terminal.EventError:
|
||||
return
|
||||
case terminal.EventKeyReport:
|
||||
v.report = ev.Report.String()
|
||||
if ev.Source != 0 {
|
||||
v.report += " from " + ev.Source.String()
|
||||
}
|
||||
v.log(" report: " + v.report)
|
||||
case terminal.EventFocus:
|
||||
v.log(fmt.Sprintf(" focus: %v", ev.Focused))
|
||||
case terminal.EventKey:
|
||||
v.log(describe(ev))
|
||||
if ev.Action == terminal.KeyRelease {
|
||||
continue
|
||||
}
|
||||
switch ev.Key {
|
||||
case terminal.KeyCtrlC:
|
||||
return
|
||||
case terminal.KeyF2:
|
||||
if ev.Action == terminal.KeyPress {
|
||||
v.ask(!v.releases)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// viewer is the screen: what the terminal reports and the events so far
|
||||
type viewer struct {
|
||||
term terminal.Terminal
|
||||
releases bool
|
||||
report string
|
||||
lines []string
|
||||
}
|
||||
|
||||
// ask asks for releases, from the console or the terminal's protocol, or
|
||||
// gives them back
|
||||
func (v *viewer) ask(releases bool) {
|
||||
v.releases, v.report = releases, "asking"
|
||||
if releases {
|
||||
v.term.SetKeyReport(terminal.KeyReportReleases, terminal.KeySourceConsole|terminal.KeySourceProtocol)
|
||||
return
|
||||
}
|
||||
v.term.SetKeyReport(terminal.KeyReportPresses, 0)
|
||||
}
|
||||
|
||||
// log adds a line, keeping the last screenful
|
||||
func (v *viewer) log(line string) {
|
||||
v.lines = append(v.lines, line)
|
||||
if len(v.lines) > 500 {
|
||||
v.lines = v.lines[len(v.lines)-500:]
|
||||
}
|
||||
}
|
||||
|
||||
// draw shows the report above the events, the latest at the bottom
|
||||
func (v *viewer) draw() {
|
||||
w, h := v.term.Size()
|
||||
if w <= 0 || h <= 0 {
|
||||
return
|
||||
}
|
||||
cells := make([]terminal.Cell, w*h)
|
||||
text := func(y int, s string, attr terminal.Attr) {
|
||||
x := 0
|
||||
for _, r := range s {
|
||||
if x >= w {
|
||||
break
|
||||
}
|
||||
cells[y*w+x] = terminal.Cell{Rune: r, Attrs: attr | terminal.AttrFgDefault | terminal.AttrBgDefault}
|
||||
x++
|
||||
}
|
||||
for ; x < w; x++ {
|
||||
cells[y*w+x] = terminal.Cell{Rune: ' ', Attrs: attr | terminal.AttrFgDefault | terminal.AttrBgDefault}
|
||||
}
|
||||
}
|
||||
text(0, "keys: "+v.report, terminal.AttrBold|terminal.AttrReverse)
|
||||
if h > 1 {
|
||||
text(1, "F2 asks for releases or gives them back · Ctrl+C quits", terminal.AttrDim)
|
||||
}
|
||||
shown := v.lines[max(0, len(v.lines)-(h-2)):]
|
||||
for y := 2; y < h; y++ {
|
||||
line := ""
|
||||
if i := y - 2; i < len(shown) {
|
||||
line = shown[i]
|
||||
}
|
||||
text(y, line, terminal.AttrNone)
|
||||
}
|
||||
v.term.Flush(cells, w, h)
|
||||
}
|
||||
|
||||
// describe is a key event in one line: its action, key, modifiers and
|
||||
// whether its release was made up for a hold whose own can't arrive
|
||||
func describe(ev terminal.Event) string {
|
||||
key := terminal.KeyName(ev.Key)
|
||||
if ev.Key == terminal.KeyRune {
|
||||
key = fmt.Sprintf("%q", ev.Rune)
|
||||
}
|
||||
var mods []string
|
||||
for _, m := range []struct {
|
||||
mod terminal.Modifier
|
||||
name string
|
||||
}{{terminal.ModCtrl, "ctrl"}, {terminal.ModAlt, "alt"}, {terminal.ModShift, "shift"}} {
|
||||
if ev.Modifiers&m.mod != 0 {
|
||||
mods = append(mods, m.name)
|
||||
}
|
||||
}
|
||||
line := fmt.Sprintf("%-8v %s", ev.Action, strings.Join(append(mods, key), "+"))
|
||||
if ev.Lost {
|
||||
line += " (lost)"
|
||||
}
|
||||
return line
|
||||
}
|
||||
@@ -0,0 +1,297 @@
|
||||
//go:build freebsd
|
||||
|
||||
package terminal
|
||||
|
||||
import (
|
||||
"os"
|
||||
"strconv"
|
||||
"sync"
|
||||
"unsafe"
|
||||
|
||||
"golang.org/x/sys/unix"
|
||||
)
|
||||
|
||||
// The FreeBSD console's ioctls (sys/kbio.h, sys/consio.h), which
|
||||
// golang.org/x/sys/unix does not define
|
||||
const (
|
||||
kdGetKeyboardMode = 0x40044B06 // KDGKBMODE
|
||||
kdSetKeyboardMode = 0x20044B07 // KDSKBMODE
|
||||
kdGetLockState = 0x40044B13 // KDGKBSTATE
|
||||
kdSetLockState = 0x20044B14 // KDSKBSTATE
|
||||
gioKeymap = 0x20006B06 // GIO_KEYMAP
|
||||
gioDeadKeymap = 0x20006B08 // GIO_DEADKEYMAP
|
||||
vtActivate = 0x20047605 // VT_ACTIVATE
|
||||
vtGetActive = 0x40047607 // VT_GETACTIVE
|
||||
vtGetIndex = 0x40047608 // VT_GETINDEX
|
||||
)
|
||||
|
||||
// Keyboard modes
|
||||
const (
|
||||
kXlate = 1 // K_XLATE
|
||||
kCode = 2 // K_CODE
|
||||
)
|
||||
|
||||
// keymapT is GIO_KEYMAP's keymap_t
|
||||
type keymapT struct {
|
||||
nKeys uint16
|
||||
keys [fbsdNumKeys]fbsdKey
|
||||
}
|
||||
|
||||
// accentmapT is GIO_DEADKEYMAP's accentmap_t
|
||||
type accentmapT struct {
|
||||
nAccs uint16
|
||||
accents [fbsdDeadKeys]fbsdAccent
|
||||
}
|
||||
|
||||
// freebsdConsole is the vt(4) console the game runs on, its keyboard switched
|
||||
// to keycodes (K_CODE) while releases come from it
|
||||
type freebsdConsole struct {
|
||||
tty *os.File
|
||||
fd int
|
||||
vt int // the console's number, from 1
|
||||
termios *unix.Termios // the termios the backend found, which the guard restores
|
||||
|
||||
mu sync.Mutex
|
||||
isRaw bool
|
||||
km fbsdKeymap
|
||||
kb fbsdKeys
|
||||
away bool // another console had the keyboard when last asked
|
||||
guard *keyGuard
|
||||
}
|
||||
|
||||
// openConsole is the console tty is, nil unless it is one: a vt(4) console,
|
||||
// not a pty, a serial line or syscons
|
||||
func openConsole(tty *os.File, cooked *unix.Termios) keyConsole {
|
||||
if vty, err := unix.Sysctl("kern.vty"); cooked == nil || err != nil || vty != "vt" {
|
||||
return nil
|
||||
}
|
||||
fd := int(tty.Fd())
|
||||
vt, err := unix.IoctlGetInt(fd, vtGetIndex)
|
||||
if err != nil || vt < 1 {
|
||||
return nil
|
||||
}
|
||||
if _, err := unix.IoctlGetInt(fd, kdGetKeyboardMode); err != nil {
|
||||
return nil
|
||||
}
|
||||
c := &freebsdConsole{tty: tty, fd: fd, vt: vt, termios: cooked}
|
||||
c.kb.km = &c.km
|
||||
return c
|
||||
}
|
||||
|
||||
// prepare reads the keymap and starts the guard; a keyboard some other
|
||||
// program has raw is left alone
|
||||
func (c *freebsdConsole) prepare() bool {
|
||||
c.mu.Lock()
|
||||
defer c.mu.Unlock()
|
||||
if c.isRaw {
|
||||
return true
|
||||
}
|
||||
mode, err := unix.IoctlGetInt(c.fd, kdGetKeyboardMode)
|
||||
if err != nil || mode != kXlate || !c.readKeymap() {
|
||||
return false
|
||||
}
|
||||
if c.guard == nil {
|
||||
if c.guard, err = startGuard(c.tty); err != nil {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// readKeymap reads the keyboard's keymap and accents, and whether vt takes
|
||||
// right Alt for AltGr
|
||||
func (c *freebsdConsole) readKeymap() bool {
|
||||
var km keymapT
|
||||
if ioctlPtr(c.fd, gioKeymap, unsafe.Pointer(&km)) != nil {
|
||||
return false
|
||||
}
|
||||
c.km.keys = km.keys
|
||||
var am accentmapT
|
||||
c.km.nAccents = 0
|
||||
if ioctlPtr(c.fd, gioDeadKeymap, unsafe.Pointer(&am)) == nil {
|
||||
c.km.accents, c.km.nAccents = am.accents, min(int(am.nAccs), fbsdDeadKeys)
|
||||
}
|
||||
altGr, err := unix.SysctlUint32("kern.vt.enable_altgr")
|
||||
c.km.altGr = err != nil || altGr != 0
|
||||
return true
|
||||
}
|
||||
|
||||
// raw arms the guard and switches the keyboard to keycodes, which vt allows
|
||||
// whoever has the console open. Scroll Lock on is the console's history mode,
|
||||
// which takes every key but its own: the keyboard stays as it is then.
|
||||
func (c *freebsdConsole) raw() bool {
|
||||
c.mu.Lock()
|
||||
defer c.mu.Unlock()
|
||||
if c.isRaw {
|
||||
return true
|
||||
}
|
||||
if c.guard == nil || !c.guard.arm(kXlate, c.termios) {
|
||||
c.dropGuard()
|
||||
return false
|
||||
}
|
||||
locks, err := unix.IoctlGetInt(c.fd, kdGetLockState)
|
||||
if err != nil || locks&fbsdSLKED != 0 || unix.IoctlSetInt(c.fd, kdSetKeyboardMode, kCode) != nil {
|
||||
c.guard.disarm()
|
||||
return false
|
||||
}
|
||||
// What was typed cooked would read as keycodes
|
||||
flushInput(c.fd)
|
||||
c.kb.seed(uint32(locks))
|
||||
c.away, c.isRaw = false, true
|
||||
rawConsoleKeys.Store(&consoleRestore{fd: c.fd, mode: kXlate, guard: c.guard})
|
||||
return true
|
||||
}
|
||||
|
||||
// cooked switches the keyboard back
|
||||
func (c *freebsdConsole) cooked() {
|
||||
c.mu.Lock()
|
||||
defer c.mu.Unlock()
|
||||
c.cookedLocked()
|
||||
}
|
||||
|
||||
// cookedLocked switches the keyboard back, dropping keycodes not yet read; a
|
||||
// console that refuses keeps the guard armed. Caller MUST hold mu.
|
||||
func (c *freebsdConsole) cookedLocked() {
|
||||
if !c.isRaw {
|
||||
return
|
||||
}
|
||||
c.isRaw = false
|
||||
rawConsoleKeys.Store(nil)
|
||||
if unix.IoctlSetInt(c.fd, kdSetKeyboardMode, kXlate) == nil {
|
||||
flushInput(c.fd)
|
||||
c.guard.disarm()
|
||||
}
|
||||
}
|
||||
|
||||
// keys translates raw keycodes: one byte each, bit 7 set on release
|
||||
func (c *freebsdConsole) keys(data []byte, key func(code uint32, action KeyAction, typed []byte)) {
|
||||
c.mu.Lock()
|
||||
defer c.mu.Unlock()
|
||||
if !c.isRaw {
|
||||
return
|
||||
}
|
||||
for _, b := range data {
|
||||
code, down := int(b&0x7f), b&0x80 == 0
|
||||
if code == 0 {
|
||||
continue
|
||||
}
|
||||
action := KeyRelease
|
||||
if down {
|
||||
action = KeyPress
|
||||
if c.kb.isDown(code) {
|
||||
action = KeyRepeat
|
||||
}
|
||||
}
|
||||
typed, act := c.kb.key(code, down)
|
||||
c.act(act)
|
||||
key(uint32(code), action, typed)
|
||||
}
|
||||
}
|
||||
|
||||
// act does what a key asks of the console: the locks it toggled kept with the
|
||||
// keyboard and its lights, and a switch to another console. Caller MUST hold
|
||||
// mu.
|
||||
func (c *freebsdConsole) act(a consoleAct) {
|
||||
if a.leds {
|
||||
unix.IoctlSetInt(c.fd, kdSetLockState, int(c.kb.state&fbsdLockMask))
|
||||
}
|
||||
if a.vt != 0 {
|
||||
c.switchTo(a.vt)
|
||||
}
|
||||
}
|
||||
|
||||
// switchTo switches to console vt, or the one before or after the one on
|
||||
// screen, as vt does for a key cooked; vt itself refuses a console no one has
|
||||
// open
|
||||
func (c *freebsdConsole) switchTo(vt int) {
|
||||
cur, err := unix.IoctlGetInt(c.fd, vtGetActive)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
switch vt {
|
||||
case vtNext:
|
||||
vt = cur%fbsdWindows + 1
|
||||
case vtPrev:
|
||||
vt = (cur+fbsdWindows-2)%fbsdWindows + 1
|
||||
}
|
||||
if vt != cur {
|
||||
unix.IoctlSetInt(c.fd, vtActivate, vt)
|
||||
}
|
||||
}
|
||||
|
||||
// front is whether this console is on screen; back on it, translation starts
|
||||
// again from the console's locks, its modifiers having moved elsewhere
|
||||
func (c *freebsdConsole) front() bool {
|
||||
c.mu.Lock()
|
||||
defer c.mu.Unlock()
|
||||
active, err := unix.IoctlGetInt(c.fd, vtGetActive)
|
||||
if !c.isRaw || err != nil {
|
||||
return true
|
||||
}
|
||||
front := active == c.vt
|
||||
if front && c.away {
|
||||
locks, _ := unix.IoctlGetInt(c.fd, kdGetLockState)
|
||||
c.kb.seed(uint32(locks))
|
||||
}
|
||||
c.away = !front
|
||||
return front
|
||||
}
|
||||
|
||||
// close switches the keyboard back and ends the guard
|
||||
func (c *freebsdConsole) close() {
|
||||
c.mu.Lock()
|
||||
defer c.mu.Unlock()
|
||||
c.cookedLocked()
|
||||
c.dropGuard()
|
||||
}
|
||||
|
||||
// dropGuard ends the guard, which the next prepare starts again. Caller MUST
|
||||
// hold mu.
|
||||
func (c *freebsdConsole) dropGuard() {
|
||||
if c.guard != nil {
|
||||
c.guard.close()
|
||||
c.guard = nil
|
||||
}
|
||||
}
|
||||
|
||||
// flushInput drops the console's pending input as its keyboard switches:
|
||||
// keycodes would read as characters, and characters as keycodes
|
||||
func flushInput(fd int) {
|
||||
unix.IoctlSetPointerInt(fd, unix.TIOCFLUSH, unix.TCIFLUSH) // FREAD, which TCIFLUSH equals here
|
||||
}
|
||||
|
||||
// guardExecutable is this program's binary, which runs again as the guard
|
||||
func guardExecutable() (string, error) { return os.Executable() }
|
||||
|
||||
// nameGuard leaves the guard's process name as it is: FreeBSD names a process
|
||||
// after its binary, and the guard's arguments name it
|
||||
func nameGuard() {}
|
||||
|
||||
// consolePath is the console's device, for the guard to open it again
|
||||
func consolePath(tty *os.File) string {
|
||||
vt, err := unix.IoctlGetInt(int(tty.Fd()), vtGetIndex)
|
||||
if err != nil || vt < 1 {
|
||||
return ""
|
||||
}
|
||||
return "/dev/ttyv" + strconv.FormatInt(int64(vt-1), 32)
|
||||
}
|
||||
|
||||
// guardRestore switches the console keyboard back for the guard, then has
|
||||
// rest restore the console's tty. A session whose leader ends revokes its
|
||||
// console, the game's leaving with it, which then takes no ioctl (ENOTTY):
|
||||
// the guard opens it again, which vt needs no more of to switch the keyboard.
|
||||
func guardRestore(tty *os.File, path string, mode int, rest func(fd int)) {
|
||||
fd := int(tty.Fd())
|
||||
switch err := unix.IoctlSetInt(fd, kdSetKeyboardMode, mode); err {
|
||||
case unix.ENOTTY, unix.ENXIO, unix.EBADF:
|
||||
guardReopen(path, mode, func(fd int) {
|
||||
flushInput(fd)
|
||||
rest(fd)
|
||||
})
|
||||
case nil:
|
||||
flushInput(fd)
|
||||
fallthrough
|
||||
default:
|
||||
rest(fd)
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,386 @@
|
||||
//go:build linux
|
||||
|
||||
package terminal
|
||||
|
||||
import (
|
||||
"os"
|
||||
"strconv"
|
||||
"strings"
|
||||
"sync"
|
||||
"unsafe"
|
||||
|
||||
"golang.org/x/sys/unix"
|
||||
)
|
||||
|
||||
// The Linux console's ioctls (linux/kd.h, linux/vt.h, linux/tiocl.h), which
|
||||
// golang.org/x/sys/unix does not define
|
||||
const (
|
||||
kdGetKeyboardMode = 0x4B44 // KDGKBMODE
|
||||
kdSetKeyboardMode = 0x4B45 // KDSKBMODE
|
||||
kdGetKeymapEntry = 0x4B46 // KDGKBENT
|
||||
kdGetFunctionKey = 0x4B48 // KDGKBSENT
|
||||
kdGetAccents = 0x4BFA // KDGKBDIACRUC
|
||||
kdGetMetaMode = 0x4B62 // KDGKBMETA
|
||||
kdGetLockFlags = 0x4B64 // KDGKBLED
|
||||
kdSetLockFlags = 0x4B65 // KDSKBLED
|
||||
vtGetState = 0x5603 // VT_GETSTATE
|
||||
vtActivate = 0x5606 // VT_ACTIVATE
|
||||
tioclGetShiftState = 6 // TIOCLINUX subcode: the modifiers down
|
||||
ttyMajor = 4 // the consoles' device major, minors 1 to 63
|
||||
)
|
||||
|
||||
// Keyboard modes, and the meta mode that types Meta keys as ESC prefixes
|
||||
const (
|
||||
kXlate = 0x01 // K_XLATE
|
||||
kMediumRaw = 0x02 // K_MEDIUMRAW
|
||||
kUnicode = 0x03 // K_UNICODE
|
||||
kEscPrefix = 0x04 // K_ESCPREFIX
|
||||
)
|
||||
|
||||
type kbEntry struct {
|
||||
table, index uint8
|
||||
value uint16
|
||||
}
|
||||
|
||||
type kbSEntry struct {
|
||||
fn uint8
|
||||
str [512]byte
|
||||
}
|
||||
|
||||
type kbDiacrsUC struct {
|
||||
count uint32
|
||||
entries [256]struct{ diacr, base, result uint32 }
|
||||
}
|
||||
|
||||
type vtStat struct {
|
||||
active, signal, state uint16
|
||||
}
|
||||
|
||||
// linuxConsole is the Linux console the game runs on, its keyboard switched
|
||||
// to K_MEDIUMRAW while releases come from it
|
||||
type linuxConsole struct {
|
||||
tty *os.File
|
||||
fd int
|
||||
vt int // the console's number, from 1
|
||||
termios *unix.Termios // the termios the backend found, which the guard restores
|
||||
|
||||
mu sync.Mutex
|
||||
mode int // the keyboard mode prepare found, which cooked restores
|
||||
isRaw bool
|
||||
km linuxKeymap
|
||||
kb linuxKeys
|
||||
defLock uint8 // the default lock flags, beside the flags in KDGKBLED's answer
|
||||
dec mediumRaw
|
||||
away bool // another console had the keyboard when last asked
|
||||
guard *keyGuard
|
||||
}
|
||||
|
||||
// openConsole is the console tty is, nil unless it is one: a Linux virtual
|
||||
// console, not a pty, a serial line or /dev/console
|
||||
func openConsole(tty *os.File, cooked *unix.Termios) keyConsole {
|
||||
fd := int(tty.Fd())
|
||||
var st unix.Stat_t
|
||||
if cooked == nil || unix.Fstat(fd, &st) != nil || unix.Major(st.Rdev) != ttyMajor {
|
||||
return nil
|
||||
}
|
||||
vt := int(unix.Minor(st.Rdev))
|
||||
if vt < 1 || vt > 63 {
|
||||
return nil
|
||||
}
|
||||
if _, err := unix.IoctlGetInt(fd, kdGetKeyboardMode); err != nil {
|
||||
return nil
|
||||
}
|
||||
c := &linuxConsole{tty: tty, fd: fd, vt: vt, termios: cooked}
|
||||
c.kb.km = &c.km
|
||||
return c
|
||||
}
|
||||
|
||||
// prepare reads the keymap, starts the guard and lets output a Scroll Lock
|
||||
// stopped go on; a keyboard some other program has raw is left alone
|
||||
func (c *linuxConsole) prepare() bool {
|
||||
c.mu.Lock()
|
||||
defer c.mu.Unlock()
|
||||
if c.isRaw {
|
||||
return true
|
||||
}
|
||||
mode, err := unix.IoctlGetInt(c.fd, kdGetKeyboardMode)
|
||||
if err != nil || mode != kXlate && mode != kUnicode || !c.readKeymap() {
|
||||
return false
|
||||
}
|
||||
if c.guard == nil {
|
||||
if c.guard, err = startGuard(c.tty); err != nil {
|
||||
return false
|
||||
}
|
||||
}
|
||||
c.mode = mode
|
||||
unix.IoctlSetInt(c.fd, unix.TCXONC, unix.TCOON)
|
||||
return true
|
||||
}
|
||||
|
||||
// readKeymap reads the kernel's keymap: each map's entries, the function key
|
||||
// strings, the accent table and the meta mode. Entries are read cooked, while
|
||||
// KDGKBENT still answers Unicode ones.
|
||||
func (c *linuxConsole) readKeymap() bool {
|
||||
km := &c.km
|
||||
for table := range km.maps {
|
||||
e := kbEntry{table: uint8(table)}
|
||||
if ioctlPtr(c.fd, kdGetKeymapEntry, unsafe.Pointer(&e)) != nil {
|
||||
return false
|
||||
}
|
||||
if e.value == kNoSuchMap {
|
||||
km.maps[table] = nil
|
||||
continue
|
||||
}
|
||||
m := km.maps[table]
|
||||
if m == nil {
|
||||
m = new([nrKeys]uint16)
|
||||
km.maps[table] = m
|
||||
}
|
||||
m[0] = e.value ^ 0xf000
|
||||
for i := 1; i < nrKeys; i++ {
|
||||
e.index = uint8(i)
|
||||
if ioctlPtr(c.fd, kdGetKeymapEntry, unsafe.Pointer(&e)) != nil {
|
||||
return false
|
||||
}
|
||||
m[i] = e.value ^ 0xf000
|
||||
}
|
||||
}
|
||||
var s kbSEntry
|
||||
for fn := range km.funcs {
|
||||
s.fn, km.funcs[fn] = uint8(fn), ""
|
||||
if ioctlPtr(c.fd, kdGetFunctionKey, unsafe.Pointer(&s)) == nil {
|
||||
if n := strings.IndexByte(string(s.str[:]), 0); n >= 0 {
|
||||
km.funcs[fn] = string(s.str[:n])
|
||||
}
|
||||
}
|
||||
}
|
||||
var acc kbDiacrsUC
|
||||
km.accents = km.accents[:0]
|
||||
if ioctlPtr(c.fd, kdGetAccents, unsafe.Pointer(&acc)) == nil {
|
||||
for _, a := range acc.entries[:min(int(acc.count), len(acc.entries))] {
|
||||
km.accents = append(km.accents, linuxAccent{rune(a.diacr), rune(a.base), rune(a.result)})
|
||||
}
|
||||
}
|
||||
meta, err := unix.IoctlGetInt(c.fd, kdGetMetaMode)
|
||||
km.escMeta = err != nil || meta == kEscPrefix
|
||||
km.csiMods = linuxAtLeast(7, 1)
|
||||
return true
|
||||
}
|
||||
|
||||
// linuxAtLeast is whether the running kernel is major.minor or later
|
||||
func linuxAtLeast(major, minor int) bool {
|
||||
var u unix.Utsname
|
||||
if unix.Uname(&u) != nil {
|
||||
return false
|
||||
}
|
||||
release := unix.ByteSliceToString(u.Release[:])
|
||||
parts := strings.SplitN(release, ".", 3)
|
||||
if len(parts) < 2 {
|
||||
return false
|
||||
}
|
||||
maj, err1 := strconv.Atoi(parts[0])
|
||||
min, err2 := strconv.Atoi(strings.TrimRightFunc(parts[1], func(r rune) bool { return r < '0' || r > '9' }))
|
||||
if err1 != nil || err2 != nil {
|
||||
return false
|
||||
}
|
||||
return maj > major || maj == major && min >= minor
|
||||
}
|
||||
|
||||
// state reads the modifiers down and the lock flags translation starts from
|
||||
func (c *linuxConsole) state() (shift, lock uint8) {
|
||||
arg := [1]byte{tioclGetShiftState}
|
||||
if ioctlPtr(c.fd, unix.TIOCLINUX, unsafe.Pointer(&arg[0])) == nil {
|
||||
shift = arg[0]
|
||||
}
|
||||
if flags, err := unix.IoctlGetInt(c.fd, kdGetLockFlags); err == nil {
|
||||
lock, c.defLock = uint8(flags&0x07), uint8(flags>>4&0x07)
|
||||
}
|
||||
return shift, lock
|
||||
}
|
||||
|
||||
// raw arms the guard and switches the keyboard to K_MEDIUMRAW, which the
|
||||
// kernel allows on the caller's controlling tty
|
||||
func (c *linuxConsole) raw() bool {
|
||||
c.mu.Lock()
|
||||
defer c.mu.Unlock()
|
||||
if c.isRaw {
|
||||
return true
|
||||
}
|
||||
if c.guard == nil || !c.guard.arm(c.mode, c.termios) {
|
||||
c.dropGuard()
|
||||
return false
|
||||
}
|
||||
shift, lock := c.state()
|
||||
if unix.IoctlSetInt(c.fd, kdSetKeyboardMode, kMediumRaw) != nil {
|
||||
c.guard.disarm()
|
||||
return false
|
||||
}
|
||||
c.kb.seed(shift, lock)
|
||||
c.dec, c.away, c.isRaw = mediumRaw{}, false, true
|
||||
rawConsoleKeys.Store(&consoleRestore{fd: c.fd, mode: c.mode, guard: c.guard})
|
||||
return true
|
||||
}
|
||||
|
||||
// cooked switches the keyboard back
|
||||
func (c *linuxConsole) cooked() {
|
||||
c.mu.Lock()
|
||||
defer c.mu.Unlock()
|
||||
c.cookedLocked()
|
||||
}
|
||||
|
||||
// cookedLocked switches the keyboard back; a console that refuses keeps the
|
||||
// guard armed. Caller MUST hold mu.
|
||||
func (c *linuxConsole) cookedLocked() {
|
||||
if !c.isRaw {
|
||||
return
|
||||
}
|
||||
c.isRaw = false
|
||||
rawConsoleKeys.Store(nil)
|
||||
if unix.IoctlSetInt(c.fd, kdSetKeyboardMode, c.mode) == nil {
|
||||
c.guard.disarm()
|
||||
}
|
||||
}
|
||||
|
||||
// keys decodes raw keycodes and translates each key
|
||||
func (c *linuxConsole) keys(data []byte, key func(code uint32, action KeyAction, typed []byte)) {
|
||||
c.mu.Lock()
|
||||
defer c.mu.Unlock()
|
||||
if !c.isRaw {
|
||||
return
|
||||
}
|
||||
c.dec.decode(data, func(code int, down bool) {
|
||||
if code >= nrKeys {
|
||||
return // no keymap maps it
|
||||
}
|
||||
action := KeyRelease
|
||||
if down {
|
||||
action = KeyPress
|
||||
if c.kb.isDown(code) {
|
||||
action = KeyRepeat
|
||||
}
|
||||
}
|
||||
typed, act := c.kb.key(code, down, action == KeyRepeat)
|
||||
c.act(act)
|
||||
key(uint32(code), action, typed)
|
||||
})
|
||||
}
|
||||
|
||||
// act does what a key asks of the console. Caller MUST hold mu.
|
||||
func (c *linuxConsole) act(a consoleAct) {
|
||||
if a.leds {
|
||||
unix.IoctlSetInt(c.fd, kdSetLockFlags, int(c.kb.leds)|int(c.defLock)<<4)
|
||||
}
|
||||
if a.start {
|
||||
unix.IoctlSetInt(c.fd, unix.TCXONC, unix.TCOON)
|
||||
}
|
||||
if a.vt != 0 {
|
||||
c.switchTo(a.vt)
|
||||
}
|
||||
}
|
||||
|
||||
// switchTo switches to console vt, or the one before or after this one in
|
||||
// use, as the kernel does for a key cooked: only to a console in use, which
|
||||
// VT_GETSTATE tells of the first 15
|
||||
func (c *linuxConsole) switchTo(vt int) {
|
||||
var st vtStat
|
||||
if ioctlPtr(c.fd, vtGetState, unsafe.Pointer(&st)) != nil {
|
||||
return
|
||||
}
|
||||
cur, inUse := int(st.active), func(n int) bool { return n > 15 || st.state&(1<<n) != 0 }
|
||||
if vt < 0 && cur >= 1 && cur <= 15 {
|
||||
step := 1
|
||||
if vt == vtPrev {
|
||||
step = -1
|
||||
}
|
||||
vt = 0
|
||||
for n := (cur+step+14)%15 + 1; n != cur; n = (n+step+14)%15 + 1 {
|
||||
if inUse(n) {
|
||||
vt = n
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
if vt > 0 && vt != cur && inUse(vt) {
|
||||
unix.IoctlSetInt(c.fd, vtActivate, vt)
|
||||
}
|
||||
}
|
||||
|
||||
// front is whether this console is on screen; back on it, translation starts
|
||||
// again from the console's state, its modifiers having moved elsewhere
|
||||
func (c *linuxConsole) front() bool {
|
||||
c.mu.Lock()
|
||||
defer c.mu.Unlock()
|
||||
var st vtStat
|
||||
if !c.isRaw || ioctlPtr(c.fd, vtGetState, unsafe.Pointer(&st)) != nil {
|
||||
return true
|
||||
}
|
||||
front := int(st.active) == c.vt
|
||||
if front && c.away {
|
||||
c.kb.seed(c.state())
|
||||
c.dec = mediumRaw{}
|
||||
}
|
||||
c.away = !front
|
||||
return front
|
||||
}
|
||||
|
||||
// close switches the keyboard back and ends the guard
|
||||
func (c *linuxConsole) close() {
|
||||
c.mu.Lock()
|
||||
defer c.mu.Unlock()
|
||||
c.cookedLocked()
|
||||
c.dropGuard()
|
||||
}
|
||||
|
||||
// dropGuard ends the guard, which the next prepare starts again. Caller MUST
|
||||
// hold mu.
|
||||
func (c *linuxConsole) dropGuard() {
|
||||
if c.guard != nil {
|
||||
c.guard.close()
|
||||
c.guard = nil
|
||||
}
|
||||
}
|
||||
|
||||
// guardExecutable is this program's binary, which runs again as the guard:
|
||||
// the running one, even replaced or deleted since
|
||||
func guardExecutable() (string, error) { return "/proc/self/exe", nil }
|
||||
|
||||
// nameGuard names the guard's process as its arguments do; init runs on the
|
||||
// main thread, whose name is the process's
|
||||
func nameGuard() {
|
||||
name := append([]byte(guardName), 0)
|
||||
unix.Prctl(unix.PR_SET_NAME, uintptr(unsafe.Pointer(&name[0])), 0, 0, 0)
|
||||
}
|
||||
|
||||
// consolePath is the console's device, for the guard to open it again
|
||||
func consolePath(tty *os.File) string {
|
||||
var st unix.Stat_t
|
||||
if unix.Fstat(int(tty.Fd()), &st) != nil {
|
||||
return ""
|
||||
}
|
||||
return "/dev/tty" + strconv.Itoa(int(unix.Minor(st.Rdev)))
|
||||
}
|
||||
|
||||
// guardRestore switches the console keyboard back for the guard, then has
|
||||
// rest restore the console's tty. A game that led the console's session took
|
||||
// the console with it, the kernel hanging it up as the game died: the guard,
|
||||
// leading a session of its own then, opens the console again once it is free,
|
||||
// which makes it the guard's controlling tty and lets it switch the keyboard.
|
||||
func guardRestore(tty *os.File, path string, mode int, rest func(fd int)) {
|
||||
fd := int(tty.Fd())
|
||||
if err := unix.IoctlSetInt(fd, kdSetKeyboardMode, mode); err != unix.EIO && err != unix.EPERM {
|
||||
rest(fd)
|
||||
return
|
||||
}
|
||||
if sid, _ := unix.Getsid(0); sid != os.Getpid() {
|
||||
return
|
||||
}
|
||||
guardReopen(path, mode, func(fd int) {
|
||||
rest(fd)
|
||||
// Given up, the console isn't hung up again as the guard ends
|
||||
unix.IoctlSetInt(fd, unix.TIOCNOTTY, 0)
|
||||
})
|
||||
}
|
||||
|
||||
// flushInput drops the console's pending input as its keyboard switches, which
|
||||
// KDSKBMODE does itself here
|
||||
func flushInput(int) {}
|
||||
@@ -0,0 +1,6 @@
|
||||
//go:build !linux && !freebsd
|
||||
|
||||
package terminal
|
||||
|
||||
// restoreConsoleKeys has no console keyboard to restore here
|
||||
func restoreConsoleKeys() {}
|
||||
@@ -0,0 +1,12 @@
|
||||
//go:build unix && !linux && !freebsd
|
||||
|
||||
package terminal
|
||||
|
||||
import (
|
||||
"os"
|
||||
|
||||
"golang.org/x/sys/unix"
|
||||
)
|
||||
|
||||
// openConsole finds no console whose keyboard goes raw here
|
||||
func openConsole(*os.File, *unix.Termios) keyConsole { return nil }
|
||||
@@ -0,0 +1,39 @@
|
||||
//go:build linux || freebsd
|
||||
|
||||
package terminal
|
||||
|
||||
import (
|
||||
"sync/atomic"
|
||||
"unsafe"
|
||||
|
||||
"golang.org/x/sys/unix"
|
||||
)
|
||||
|
||||
// What the consoles whose keyboard goes raw share: the Linux console and
|
||||
// FreeBSD's vt(4)
|
||||
|
||||
// ioctlPtr is an ioctl whose argument is a pointer
|
||||
func ioctlPtr(fd int, req uint, arg unsafe.Pointer) error {
|
||||
if _, _, e := unix.Syscall(unix.SYS_IOCTL, uintptr(fd), uintptr(req), uintptr(arg)); e != 0 {
|
||||
return e
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// consoleRestore is what restores a console keyboard left raw
|
||||
type consoleRestore struct {
|
||||
fd, mode int
|
||||
guard *keyGuard
|
||||
}
|
||||
|
||||
// rawConsoleKeys is the console a Terminal has raw, for EmergencyReset
|
||||
var rawConsoleKeys atomic.Pointer[consoleRestore]
|
||||
|
||||
// restoreConsoleKeys switches back a console keyboard a Terminal has raw. It
|
||||
// takes no lock, for a reset from a panic that may hold one.
|
||||
func restoreConsoleKeys() {
|
||||
if r := rawConsoleKeys.Swap(nil); r != nil && unix.IoctlSetInt(r.fd, kdSetKeyboardMode, r.mode) == nil {
|
||||
flushInput(r.fd)
|
||||
r.guard.disarm()
|
||||
}
|
||||
}
|
||||
@@ -6,8 +6,9 @@
|
||||
// the terminal's own default colors
|
||||
// - Double-buffered output with cell-level diffing
|
||||
// - Raw input parsing with escape sequence handling and bracketed paste
|
||||
// - Key releases on request, through the terminal's key event protocol
|
||||
// (Alacritty's), and presses on terminals without it
|
||||
// - Key releases on request, from the Linux or FreeBSD console's keyboard
|
||||
// or the terminal's key event protocol (Alacritty's), and presses where
|
||||
// there are neither
|
||||
// - Drawing on /dev/tty when stdin or stdout is redirected (Unix)
|
||||
// - Resize detection (SIGWINCH on Unix, callback on WASM)
|
||||
// - Clean terminal restoration on exit/panic
|
||||
|
||||
+498
@@ -0,0 +1,498 @@
|
||||
package terminal
|
||||
|
||||
import "unicode/utf8"
|
||||
|
||||
// The FreeBSD console's keymap and its translation of keycodes, after the
|
||||
// kernel's own (sys/dev/kbd/kbd.c, sys/dev/vt/vt_core.c), so a vt(4)
|
||||
// keyboard switched to keycodes (K_CODE) types what the console types with it
|
||||
// cooked: the keyboard's driver makes an action of each keycode by the keymap
|
||||
// and its modifiers and locks, and vt types the action.
|
||||
|
||||
// Actions the keymap's special entries hold (sys/kbio.h)
|
||||
const (
|
||||
fbsdNOP = 0x00 // nothing
|
||||
fbsdLSH = 0x02 // left Shift
|
||||
fbsdRSH = 0x03 // right Shift
|
||||
fbsdCLK = 0x04 // Caps Lock
|
||||
fbsdNLK = 0x05 // Num Lock
|
||||
fbsdSLK = 0x06 // Scroll Lock
|
||||
fbsdLALT = 0x07 // left Alt
|
||||
fbsdBTAB = 0x08 // back tab
|
||||
fbsdLCTR = 0x09 // left Ctrl
|
||||
fbsdNEXT = 0x0a // the next console
|
||||
fbsdFSCR = 0x0b // console 1, the others after it
|
||||
fbsdFFN = 0x1b // function key 1, the others after it
|
||||
fbsdLFN = 0x7a // the last function key
|
||||
fbsdRCTR = 0x80 // right Ctrl
|
||||
fbsdRALT = 0x81 // right Alt
|
||||
fbsdALK = 0x82 // AltGr Lock
|
||||
fbsdASH = 0x83 // AltGr
|
||||
fbsdMETA = 0x84 // Meta
|
||||
fbsdRBT = 0x85 // reboot
|
||||
fbsdDBG = 0x86 // the debugger
|
||||
fbsdSUSP = 0x87 // suspend
|
||||
fbsdSPSC = 0x88 // the screen saver
|
||||
fbsdFACC = 0x89 // the first dead key
|
||||
fbsdLACC = 0x97 // the last dead key
|
||||
fbsdSTBY = 0x98 // standby
|
||||
fbsdPREV = 0x99 // the previous console
|
||||
fbsdPNC = 0x9a // panic
|
||||
fbsdLSHA = 0x9b // left Shift, AltGr Lock pressed alone
|
||||
fbsdRSHA = 0x9c // right Shift, AltGr Lock pressed alone
|
||||
fbsdLCTRA = 0x9d // left Ctrl, AltGr Lock pressed alone
|
||||
fbsdRCTRA = 0x9e // right Ctrl, AltGr Lock pressed alone
|
||||
fbsdLALTA = 0x9f // left Alt, AltGr Lock pressed alone
|
||||
fbsdRALTA = 0xa0 // right Alt, AltGr Lock pressed alone
|
||||
fbsdHALT = 0xa1 // halt
|
||||
fbsdPDWN = 0xa2 // power down
|
||||
)
|
||||
|
||||
// What the keyboard's driver flags an action with (sys/kbio.h)
|
||||
const (
|
||||
fbsdNoKey = 0x01000000 // NOKEY: nothing to type
|
||||
fbsdFKey = 0x02000000 // FKEY: a function key
|
||||
fbsdMKey = 0x04000000 // MKEY: typed with Meta
|
||||
fbsdBKey = 0x08000000 // BKEY: back tab
|
||||
fbsdErrKey = 0x20000000 // ERRKEY: a character a dead key can't accent
|
||||
fbsdRelKey = 0x40000000 // RELKEY: a special key let go
|
||||
fbsdSpclKey = 0x80000000 // SPCLKEY: a special action
|
||||
fbsdFlags = 0xff000000 // KEYFLAGS
|
||||
)
|
||||
|
||||
// The keyboard's state: the locks, as KDGKBSTATE reports them, and the
|
||||
// modifiers (sys/dev/kbd/kbdreg.h)
|
||||
const (
|
||||
fbsdCLKED = 1 << 0 // Caps Lock on
|
||||
fbsdNLKED = 1 << 1 // Num Lock on
|
||||
fbsdSLKED = 1 << 2 // Scroll Lock on
|
||||
fbsdALKED = 1 << 3 // AltGr Lock on
|
||||
fbsdLockMask = fbsdCLKED | fbsdNLKED | fbsdSLKED | fbsdALKED
|
||||
fbsdShifts1 = 1 << 16
|
||||
fbsdShifts2 = 1 << 17
|
||||
fbsdShifts = fbsdShifts1 | fbsdShifts2
|
||||
fbsdCtls1 = 1 << 18
|
||||
fbsdCtls2 = 1 << 19
|
||||
fbsdCtls = fbsdCtls1 | fbsdCtls2
|
||||
fbsdAlts1 = 1 << 20
|
||||
fbsdAlts2 = 1 << 21
|
||||
fbsdAlts = fbsdAlts1 | fbsdAlts2
|
||||
fbsdAgrs1 = 1 << 22
|
||||
fbsdAgrs2 = 1 << 23
|
||||
fbsdAgrs = fbsdAgrs1 | fbsdAgrs2
|
||||
fbsdMetas1 = 1 << 24
|
||||
fbsdMetas2 = 1 << 25
|
||||
fbsdMetas = fbsdMetas1 | fbsdMetas2
|
||||
fbsdNLKDown = 1 << 26
|
||||
fbsdSLKDown = 1 << 27
|
||||
fbsdCLKDown = 1 << 28
|
||||
fbsdALKDown = 1 << 29
|
||||
fbsdShiftAOn = 1 << 30 // a Shift, Ctrl or Alt that locks AltGr pressed alone so far
|
||||
)
|
||||
|
||||
const (
|
||||
fbsdNumKeys = 256 // NUM_KEYS: entries in a keymap
|
||||
fbsdAltGrKeys = 128 // ALTGR_OFFSET: where the keys' AltGr entries start
|
||||
fbsdDeadKeys = 15 // NUM_DEADKEYS
|
||||
fbsdAccents = 52 // NUM_ACCENTCHARS: the characters a dead key accents
|
||||
fbsdLockC = 1 // FLAG_LOCK_C: Caps Lock shifts the key
|
||||
fbsdLockN = 2 // FLAG_LOCK_N: Num Lock shifts the key
|
||||
fbsdKeycodes = 128 // K_CODE's keycodes, 7 bits
|
||||
fbsdWindows = 12 // VT_MAXWINDOWS: the consoles vt(4) has
|
||||
)
|
||||
|
||||
// fbsdKeymap is a FreeBSD console keymap as GIO_KEYMAP and GIO_DEADKEYMAP
|
||||
// read it, and whether vt(4) takes right Alt for AltGr
|
||||
// (kern.vt.enable_altgr) rather than the Alt that types ESC before a
|
||||
// character
|
||||
type fbsdKeymap struct {
|
||||
keys [fbsdNumKeys]fbsdKey
|
||||
accents [fbsdDeadKeys]fbsdAccent
|
||||
nAccents int
|
||||
altGr bool
|
||||
}
|
||||
|
||||
// fbsdKey is a key's entry (keyent_t), laid out as the kernel's: its action
|
||||
// in each state of Shift, Ctrl and Alt, the states whose action is special,
|
||||
// and the locks that shift it
|
||||
type fbsdKey struct {
|
||||
actions [8]uint32
|
||||
spcl uint8
|
||||
flgs uint8
|
||||
}
|
||||
|
||||
// fbsdAccent is a dead key's accent (acc_t), laid out as the kernel's: its
|
||||
// character, and the characters it makes of others, in pairs up to a zero
|
||||
type fbsdAccent struct {
|
||||
char uint32
|
||||
pairs [fbsdAccents][2]uint32
|
||||
}
|
||||
|
||||
// fbsdKeys translates keycodes as a vt(4) console does, keeping the
|
||||
// keyboard's modifiers, locks and dead key, the special action each key down
|
||||
// began, the code left Alt and the keypad compose, and Alt for vt's ESC. The
|
||||
// machine's keys (reboot, halt, power down, suspend, standby, the debugger,
|
||||
// panic), the screen saver and paste type nothing; Scroll Lock does nothing,
|
||||
// leaving the console's history mode alone. The cursor keys type as they do
|
||||
// outside application mode, which the package never sets.
|
||||
type fbsdKeys struct {
|
||||
km *fbsdKeymap
|
||||
down [fbsdKeycodes / 64]uint64 // keys down
|
||||
state uint32 // modifiers and locks
|
||||
accent int // the dead key pending, from 1; zero for none
|
||||
lastact [fbsdKeycodes]uint32 // the special action each key down began
|
||||
composing bool // left Alt down, the keypad's digits composing a code
|
||||
composed uint32 // the code composed so far
|
||||
alt bool // Alt down, for vt's ESC before a character
|
||||
}
|
||||
|
||||
// seed starts translation from the console's locks; modifiers already down
|
||||
// are not known, the keyboard's driver forgetting them as it switches
|
||||
func (k *fbsdKeys) seed(locks uint32) {
|
||||
*k = fbsdKeys{km: k.km, state: locks & fbsdLockMask}
|
||||
}
|
||||
|
||||
// isDown is whether a key is down
|
||||
func (k *fbsdKeys) isDown(code int) bool {
|
||||
return code >= 0 && code < fbsdKeycodes && k.down[code/64]&(1<<(code%64)) != 0
|
||||
}
|
||||
|
||||
// key translates one keycode event: down for a press, or a repeat, which the
|
||||
// keyboard sends as another press. It returns what the console types for it
|
||||
// and what it asks of the console.
|
||||
func (k *fbsdKeys) key(code int, down bool) (typed []byte, act consoleAct) {
|
||||
if code <= 0 || code >= fbsdKeycodes {
|
||||
return nil, act
|
||||
}
|
||||
if down {
|
||||
k.down[code/64] |= 1 << (code % 64)
|
||||
} else {
|
||||
k.down[code/64] &^= 1 << (code % 64)
|
||||
}
|
||||
if k.compose(code, down) {
|
||||
return nil, act
|
||||
}
|
||||
locks := k.state & fbsdLockMask
|
||||
c := k.action(code, !down)
|
||||
act.leds = k.state&fbsdLockMask != locks
|
||||
typed, act.vt = k.vt(c)
|
||||
if !k.composing && k.composed > 0 {
|
||||
// Left Alt up types the code composed
|
||||
ch, _ := k.vt(k.composed)
|
||||
typed, k.composed = append(typed, ch...), 0
|
||||
}
|
||||
return typed, act
|
||||
}
|
||||
|
||||
// The keycodes of left Alt and the keypad's digits, which the keyboard's
|
||||
// driver composes a code with
|
||||
const fbsdKeyLeftAlt = 0x38
|
||||
|
||||
var fbsdPadDigits = map[int]uint32{
|
||||
0x47: 7, 0x48: 8, 0x49: 9, 0x4b: 4, 0x4c: 5, 0x4d: 6, 0x4f: 1, 0x50: 2, 0x51: 3, 0x52: 0,
|
||||
}
|
||||
|
||||
// compose composes a code of the keypad's digits typed with left Alt down, as
|
||||
// the keyboard's driver does before it makes an action of a keycode
|
||||
// (kbdmux_read_char): true when it takes the key, which then types nothing.
|
||||
// Another key ends a code begun, and is lost to it; a code past a byte types
|
||||
// nothing.
|
||||
func (k *fbsdKeys) compose(code int, down bool) bool {
|
||||
if code == fbsdKeyLeftAlt {
|
||||
if down && !k.composing {
|
||||
k.composing, k.composed = true, 0
|
||||
} else if !down && k.composing {
|
||||
k.composing = false
|
||||
if k.composed > 0xff {
|
||||
k.composed = 0
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
if !k.composing {
|
||||
return false
|
||||
}
|
||||
if digit, ok := fbsdPadDigits[code]; ok {
|
||||
if down {
|
||||
k.composed = min(k.composed*10+digit, 0x100)
|
||||
}
|
||||
return true
|
||||
}
|
||||
if k.composed > 0 {
|
||||
k.composing, k.composed = false, 0
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// lockKey toggles a lock as its key goes down, not as it repeats
|
||||
func lockKey(state *uint32, down, locked uint32) {
|
||||
if *state&down == 0 {
|
||||
*state |= down
|
||||
*state ^= locked
|
||||
}
|
||||
}
|
||||
|
||||
// action makes an action of a keycode by the keymap, as the keyboard's
|
||||
// driver does (genkbd_keyaction): a character, a special action, or a flag
|
||||
// for none
|
||||
func (k *fbsdKeys) action(code int, up bool) uint32 {
|
||||
state := k.state
|
||||
i := code
|
||||
if f := state & (fbsdAgrs | fbsdALKED); f == fbsdAgrs1 || f == fbsdAgrs2 || f == fbsdALKED {
|
||||
i += fbsdAltGrKeys
|
||||
}
|
||||
key := &k.km.keys[i]
|
||||
col := 0
|
||||
if state&fbsdShifts != 0 {
|
||||
col |= 1
|
||||
}
|
||||
if state&fbsdCtls != 0 {
|
||||
col |= 2
|
||||
}
|
||||
if state&fbsdAlts != 0 {
|
||||
col |= 4
|
||||
}
|
||||
if key.flgs&fbsdLockC != 0 && state&fbsdCLKED != 0 || key.flgs&fbsdLockN != 0 && state&fbsdNLKED != 0 {
|
||||
col ^= 1
|
||||
}
|
||||
|
||||
if up {
|
||||
action := k.lastact[code]
|
||||
k.lastact[code] = fbsdNOP
|
||||
if alone, ok := fbsdLockingMods[action]; ok {
|
||||
// Pressed alone, the key toggles AltGr Lock
|
||||
if state&fbsdShiftAOn != 0 {
|
||||
lockKey(&state, fbsdALKDown, fbsdALKED)
|
||||
state &^= fbsdALKDown
|
||||
}
|
||||
action = alone
|
||||
}
|
||||
switch action {
|
||||
case fbsdNOP:
|
||||
// Regular keys go up unreported
|
||||
k.state &^= fbsdShiftAOn
|
||||
return fbsdNoKey
|
||||
case fbsdLSH:
|
||||
state &^= fbsdShifts1
|
||||
case fbsdRSH:
|
||||
state &^= fbsdShifts2
|
||||
case fbsdLCTR:
|
||||
state &^= fbsdCtls1
|
||||
case fbsdRCTR:
|
||||
state &^= fbsdCtls2
|
||||
case fbsdLALT:
|
||||
state &^= fbsdAlts1
|
||||
case fbsdRALT:
|
||||
state &^= fbsdAlts2
|
||||
case fbsdASH:
|
||||
state &^= fbsdAgrs1
|
||||
case fbsdMETA:
|
||||
state &^= fbsdMetas1
|
||||
case fbsdNLK:
|
||||
state &^= fbsdNLKDown
|
||||
case fbsdCLK:
|
||||
state &^= fbsdCLKDown
|
||||
case fbsdSLK:
|
||||
state &^= fbsdSLKDown
|
||||
case fbsdALK:
|
||||
state &^= fbsdALKDown
|
||||
}
|
||||
k.state = state &^ fbsdShiftAOn
|
||||
return fbsdSpclKey | fbsdRelKey | action
|
||||
}
|
||||
|
||||
action := key.actions[col]
|
||||
state &^= fbsdShiftAOn
|
||||
if key.spcl&(0x80>>col) == 0 {
|
||||
// A character, the dead key pending accenting it
|
||||
k.lastact[code] = fbsdNOP
|
||||
k.state = state
|
||||
if k.accent > 0 {
|
||||
if action = k.accented(action); action == fbsdErrKey {
|
||||
return action
|
||||
}
|
||||
}
|
||||
if state&fbsdMetas != 0 {
|
||||
action |= fbsdMKey
|
||||
}
|
||||
return action
|
||||
}
|
||||
|
||||
// A special key keeps the action it went down with while it repeats
|
||||
if k.lastact[code] == fbsdNOP {
|
||||
k.lastact[code] = action
|
||||
}
|
||||
if k.lastact[code] != action {
|
||||
action = fbsdNOP
|
||||
}
|
||||
if alone, ok := fbsdLockingMods[action]; ok {
|
||||
state |= fbsdShiftAOn
|
||||
action = alone
|
||||
}
|
||||
switch action {
|
||||
case fbsdNLK:
|
||||
lockKey(&state, fbsdNLKDown, fbsdNLKED)
|
||||
case fbsdCLK:
|
||||
lockKey(&state, fbsdCLKDown, fbsdCLKED)
|
||||
case fbsdSLK:
|
||||
// The console's history mode follows Scroll Lock; raw, it stays
|
||||
case fbsdALK:
|
||||
lockKey(&state, fbsdALKDown, fbsdALKED)
|
||||
case fbsdSPSC, fbsdRBT, fbsdSUSP, fbsdSTBY, fbsdDBG, fbsdNEXT, fbsdPREV, fbsdPNC, fbsdHALT, fbsdPDWN:
|
||||
k.accent = 0
|
||||
case fbsdBTAB:
|
||||
k.accent = 0
|
||||
action |= fbsdBKey
|
||||
case fbsdLSH:
|
||||
state |= fbsdShifts1
|
||||
case fbsdRSH:
|
||||
state |= fbsdShifts2
|
||||
case fbsdLCTR:
|
||||
state |= fbsdCtls1
|
||||
case fbsdRCTR:
|
||||
state |= fbsdCtls2
|
||||
case fbsdLALT:
|
||||
state |= fbsdAlts1
|
||||
case fbsdRALT:
|
||||
state |= fbsdAlts2
|
||||
case fbsdASH:
|
||||
state |= fbsdAgrs1
|
||||
case fbsdMETA:
|
||||
state |= fbsdMetas1
|
||||
case fbsdNOP:
|
||||
k.state = state
|
||||
return fbsdNoKey
|
||||
default:
|
||||
k.state = state
|
||||
if action >= fbsdFACC && action <= fbsdLACC {
|
||||
action = k.deadKey(action)
|
||||
if action == fbsdNoKey || action == fbsdErrKey {
|
||||
return action
|
||||
}
|
||||
if state&fbsdMetas != 0 {
|
||||
return action | fbsdMKey
|
||||
}
|
||||
return action
|
||||
}
|
||||
if k.accent > 0 {
|
||||
k.accent = 0
|
||||
return fbsdErrKey
|
||||
}
|
||||
if action >= fbsdFFN && action <= fbsdLFN {
|
||||
action |= fbsdFKey
|
||||
}
|
||||
return fbsdSpclKey | action
|
||||
}
|
||||
k.state = state
|
||||
return fbsdSpclKey | action
|
||||
}
|
||||
|
||||
// fbsdLockingMods are the modifiers that lock AltGr pressed alone, and the
|
||||
// modifier each is otherwise
|
||||
var fbsdLockingMods = map[uint32]uint32{
|
||||
fbsdLSHA: fbsdLSH, fbsdRSHA: fbsdRSH, fbsdLCTRA: fbsdLCTR,
|
||||
fbsdRCTRA: fbsdRCTR, fbsdLALTA: fbsdLALT, fbsdRALTA: fbsdRALT,
|
||||
}
|
||||
|
||||
// deadKey is a dead key: the next character takes its accent, and the dead
|
||||
// key again types the accent itself
|
||||
func (k *fbsdKeys) deadKey(action uint32) uint32 {
|
||||
i := int(action-fbsdFACC) + 1
|
||||
if i > k.km.nAccents || k.km.accents[i-1].char == 0 {
|
||||
k.accent = 0
|
||||
return fbsdErrKey
|
||||
}
|
||||
if i == k.accent {
|
||||
k.accent = 0
|
||||
return k.km.accents[i-1].char
|
||||
}
|
||||
k.accent = i
|
||||
return fbsdNoKey
|
||||
}
|
||||
|
||||
// accented is what the dead key pending makes of ch: its accent for a space,
|
||||
// the accented character, or an error for a character it can't accent
|
||||
func (k *fbsdKeys) accented(ch uint32) uint32 {
|
||||
acc := &k.km.accents[k.accent-1]
|
||||
k.accent = 0
|
||||
if ch == ' ' {
|
||||
return acc.char
|
||||
}
|
||||
for _, p := range acc.pairs {
|
||||
if p[0] == 0 {
|
||||
break
|
||||
}
|
||||
if p[0] == ch {
|
||||
return p[1]
|
||||
}
|
||||
}
|
||||
return fbsdErrKey
|
||||
}
|
||||
|
||||
// vt types an action as vt(4) does (vt_processkey): a character as UTF-8,
|
||||
// after an ESC while Alt is down; F1 to F12, the cursor and editing keys and
|
||||
// back tab as xterm's sequences; and a console to switch to
|
||||
func (k *fbsdKeys) vt(c uint32) (typed []byte, vt int) {
|
||||
if c&fbsdRelKey != 0 {
|
||||
switch c &^ fbsdRelKey {
|
||||
case fbsdSpclKey | fbsdRALT:
|
||||
if k.km.altGr {
|
||||
break
|
||||
}
|
||||
fallthrough
|
||||
case fbsdSpclKey | fbsdLALT:
|
||||
k.alt = false
|
||||
}
|
||||
return nil, 0
|
||||
}
|
||||
switch c {
|
||||
case fbsdSpclKey | fbsdRALT:
|
||||
if !k.km.altGr {
|
||||
k.alt = true
|
||||
}
|
||||
case fbsdSpclKey | fbsdLALT:
|
||||
k.alt = true
|
||||
}
|
||||
if c&fbsdSpclKey != 0 {
|
||||
c &^= fbsdSpclKey
|
||||
switch {
|
||||
case c >= fbsdFSCR && c < fbsdFSCR+fbsdWindows:
|
||||
return nil, int(c-fbsdFSCR) + 1
|
||||
case c == fbsdNEXT:
|
||||
return nil, vtNext
|
||||
case c == fbsdPREV:
|
||||
return nil, vtPrev
|
||||
case c == fbsdBKey|fbsdBTAB:
|
||||
return []byte("\x1b[Z"), 0
|
||||
case c&fbsdFKey != 0:
|
||||
return fbsdFunctionKey(c &^ fbsdFKey), 0
|
||||
}
|
||||
return nil, 0
|
||||
}
|
||||
if c&fbsdFlags != 0 {
|
||||
return nil, 0 // nothing, a character it can't accent, or with Meta, which vt drops
|
||||
}
|
||||
if k.alt {
|
||||
typed = append(typed, 0x1b)
|
||||
}
|
||||
return utf8.AppendRune(typed, rune(c)), 0
|
||||
}
|
||||
|
||||
// fbsdFunctionKeys are what vt(4) types for the function keys, by number:
|
||||
// xterm's sequences for F1 to F12, and for the cursor and editing keys the
|
||||
// keymap binds as function keys 49 to 61; nothing for the others
|
||||
var fbsdFunctionKeys = map[uint32]string{
|
||||
1: "\x1bOP", 2: "\x1bOQ", 3: "\x1bOR", 4: "\x1bOS",
|
||||
5: "\x1b[15~", 6: "\x1b[17~", 7: "\x1b[18~", 8: "\x1b[19~",
|
||||
9: "\x1b[20~", 10: "\x1b[21~", 11: "\x1b[23~", 12: "\x1b[24~",
|
||||
49: "\x1b[H", 50: "\x1b[A", 51: "\x1b[5~", 53: "\x1b[D", 55: "\x1b[C",
|
||||
57: "\x1b[F", 58: "\x1b[B", 59: "\x1b[6~", 60: "\x1b[2~", 61: "\x1b[3~",
|
||||
}
|
||||
|
||||
// fbsdFunctionKey is what vt(4) types for a function key action
|
||||
func fbsdFunctionKey(action uint32) []byte {
|
||||
if s, ok := fbsdFunctionKeys[action-fbsdFFN+1]; ok {
|
||||
return []byte(s)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
@@ -0,0 +1,274 @@
|
||||
package terminal
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"os"
|
||||
"slices"
|
||||
"strconv"
|
||||
"strings"
|
||||
"testing"
|
||||
)
|
||||
|
||||
// testFreeBSDKeymap is the FreeBSD kernel's built-in keymap (US) and accent
|
||||
// map (sys/dev/kbd/kbdtables.h), as GIO_KEYMAP and GIO_DEADKEYMAP read them,
|
||||
// with vt's default AltGr
|
||||
func testFreeBSDKeymap(t *testing.T) *fbsdKeymap {
|
||||
t.Helper()
|
||||
f, err := os.Open("testdata/freebsd-keymap.txt")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
defer f.Close()
|
||||
km := &fbsdKeymap{nAccents: fbsdDeadKeys, altGr: true}
|
||||
hex := func(s string) uint32 {
|
||||
x, err := strconv.ParseUint(s, 16, 32)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return uint32(x)
|
||||
}
|
||||
sc := bufio.NewScanner(f)
|
||||
for sc.Scan() {
|
||||
fields := strings.Fields(sc.Text())
|
||||
i, err := strconv.Atoi(fields[1])
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
switch fields[0] {
|
||||
case "key":
|
||||
key := &km.keys[i]
|
||||
for j, v := range fields[2:10] {
|
||||
key.actions[j] = hex(v)
|
||||
}
|
||||
key.spcl, key.flgs = uint8(hex(fields[10])), uint8(hex(fields[11]))
|
||||
case "acc":
|
||||
acc := &km.accents[i]
|
||||
acc.char = hex(fields[2])
|
||||
for j, pair := range fields[3:] {
|
||||
base, result, _ := strings.Cut(pair, ":")
|
||||
acc.pairs[j] = [2]uint32{hex(base), hex(result)}
|
||||
}
|
||||
}
|
||||
}
|
||||
return km
|
||||
}
|
||||
|
||||
// The FreeBSD console's keycodes up to 88 are the Linux console's; its others
|
||||
// are its own
|
||||
const (
|
||||
fbsdKeyKPEnter = 89
|
||||
fbsdKeyRightCtrl = 90
|
||||
fbsdKeyPrint = 92
|
||||
fbsdKeyRightAlt = 93
|
||||
fbsdKeyHome = 94
|
||||
fbsdKeyUp = 95
|
||||
fbsdKeyPageUp = 96
|
||||
fbsdKeyLeft = 97
|
||||
fbsdKeyEnd = 99
|
||||
fbsdKeyInsert = 102
|
||||
fbsdKeyDelete = 103
|
||||
fbsdKeyPause = 104
|
||||
fbsdKeyF11 = 87
|
||||
fbsdKeyF12 = 88
|
||||
keyKP9 = 73
|
||||
keyKP6 = 77
|
||||
keyKP2 = 80
|
||||
keyKP3 = 81
|
||||
)
|
||||
|
||||
// fbsdTypedBy is what vt types for strokes, and what they ask of it
|
||||
func fbsdTypedBy(k *fbsdKeys, strokes []stroke) (string, []consoleAct) {
|
||||
var out []byte
|
||||
var acts []consoleAct
|
||||
for _, s := range strokes {
|
||||
typed, act := k.key(s.code, s.down)
|
||||
out = append(out, typed...)
|
||||
if act != (consoleAct{}) {
|
||||
acts = append(acts, act)
|
||||
}
|
||||
}
|
||||
return string(out), acts
|
||||
}
|
||||
|
||||
// Keys type what vt types for them cooked, by the keymap and the modifiers
|
||||
// and locks they move: Shift into the character, Caps Lock on letters only,
|
||||
// Ctrl as control characters, Alt as an ESC prefix, F1 to F12 and the cursor
|
||||
// and editing keys as xterm's sequences, and the keypad by Num Lock
|
||||
func TestFreeBSDConsoleTypesAsCooked(t *testing.T) {
|
||||
cases := []struct {
|
||||
name string
|
||||
strokes []stroke
|
||||
want string
|
||||
altGr string // with right Alt as Alt, when it differs
|
||||
}{
|
||||
{"letter", press(keyA), "a", ""},
|
||||
{"shifted letter", hold(keyLeftShift, press(keyA)), "A", ""},
|
||||
{"shifted digit", hold(keyLeftShift, press(key1)), "!", ""},
|
||||
{"caps lock", slices.Concat(press(keyCapsLock), press(keyA, key1), press(keyCapsLock), press(keyA)), "A1a", ""},
|
||||
{"caps lock with shift", slices.Concat(press(keyCapsLock), hold(keyLeftShift, press(keyA))), "a", ""},
|
||||
{"ctrl letter", hold(keyLeftCtrl, press(keyA)), "\x01", ""},
|
||||
{"ctrl shift letter", hold(keyLeftCtrl, hold(keyLeftShift, press(keyA))), "\x01", ""},
|
||||
{"right ctrl letter", hold(fbsdKeyRightCtrl, press(keyA)), "\x01", ""},
|
||||
{"ctrl space", hold(keyLeftCtrl, press(keySpace)), "\x00", ""},
|
||||
{"ctrl backspace", hold(keyLeftCtrl, press(keyBackspace)), "\x7f", ""},
|
||||
{"alt letter", hold(keyLeftAlt, press(keyA)), "\x1ba", ""},
|
||||
{"alt enter", hold(keyLeftAlt, press(keyEnter)), "\x1b\r", ""},
|
||||
{"ctrl alt letter", hold(keyLeftCtrl, hold(keyLeftAlt, press(keyA))), "\x1b\x01", ""},
|
||||
{"right alt letter", hold(fbsdKeyRightAlt, press(keyA)), "a", "\x1ba"},
|
||||
{"alt released", slices.Concat(hold(keyLeftAlt, press(keyA)), press(keyA)), "\x1baa", ""},
|
||||
{"enter tab escape backspace", press(keyEnter, keyTab, keyEsc, keyBackspace), "\r\t\x1b\x08", ""},
|
||||
{"back tab", hold(keyLeftShift, press(keyTab)), "\x1b[Z", ""},
|
||||
{"alt back tab", hold(keyLeftAlt, hold(keyLeftShift, press(keyTab))), "\x1b[Z", ""},
|
||||
{"function keys", press(keyF1, keyF6, fbsdKeyF12), "\x1bOP\x1b[17~\x1b[24~", ""},
|
||||
{"shifted function key, no sequence", hold(keyLeftShift, press(keyF1)), "", ""},
|
||||
{"editing keys", press(fbsdKeyHome, fbsdKeyEnd, fbsdKeyInsert, fbsdKeyDelete, fbsdKeyPageUp), "\x1b[H\x1b[F\x1b[2~\x1b[3~\x1b[5~", ""},
|
||||
{"cursor", press(fbsdKeyUp, fbsdKeyLeft), "\x1b[A\x1b[D", ""},
|
||||
{"shifted cursor", hold(keyLeftShift, press(fbsdKeyUp)), "\x1b[A", ""},
|
||||
{"keypad, num lock off", press(keyKP8, keyKP5, keyKP0, keyKPDot, fbsdKeyKPEnter), "\x1b[A\x1b[2~\x7f\r", ""},
|
||||
{"keypad, num lock on", slices.Concat(press(keyNumLock), press(keyKP8, keyKP0, keyKPDot)), "80.", ""},
|
||||
{"repeat", []stroke{{keyQ, true}, {keyQ, true}, {keyQ, true}, {keyQ, false}}, "qqq", ""},
|
||||
{"shift released first", []stroke{{keyLeftShift, true}, {keyA, true}, {keyLeftShift, false}, {keyA, true}, {keyA, false}}, "Aa", ""},
|
||||
{"two shifts", []stroke{{keyLeftShift, true}, {keyRtShift, true}, {keyLeftShift, false}, {keyA, true}, {keyA, false}, {keyRtShift, false}}, "A", ""},
|
||||
{"alt keypad code", hold(keyLeftAlt, press(keyKP6, keyKP5)), "A", ""},
|
||||
{"alt keypad code, num lock on", slices.Concat(press(keyNumLock), hold(keyLeftAlt, press(keyKP2, keyKP3, keyKP3))), "é", ""},
|
||||
{"alt keypad code past a byte", hold(keyLeftAlt, press(keyKP9, keyKP9, keyKP9)), "", ""},
|
||||
{"another key ends a code", slices.Concat([]stroke{{keyLeftAlt, true}}, press(keyKP6, keyA, keyA), []stroke{{keyLeftAlt, false}}), "\x1ba", ""},
|
||||
{"right alt keypad", hold(fbsdKeyRightAlt, press(keyKP6)), "6", "\x1b6"},
|
||||
{"inert keys", slices.Concat(
|
||||
hold(keyLeftCtrl, hold(keyLeftAlt, press(fbsdKeyDelete))), // reboot
|
||||
hold(keyLeftCtrl, hold(keyLeftAlt, press(keyEsc))), // the debugger
|
||||
hold(keyLeftShift, press(fbsdKeyInsert)), // paste
|
||||
hold(keyLeftAlt, press(fbsdKeyPause)), // suspend
|
||||
press(keyScrollLk, fbsdKeyPause)), "", ""},
|
||||
}
|
||||
for _, altGr := range []bool{true, false} {
|
||||
km := testFreeBSDKeymap(t)
|
||||
km.altGr = altGr
|
||||
for _, c := range cases {
|
||||
want := c.want
|
||||
if !altGr && c.altGr != "" {
|
||||
want = c.altGr
|
||||
}
|
||||
k := &fbsdKeys{km: km}
|
||||
got, _ := fbsdTypedBy(k, c.strokes)
|
||||
if got != want {
|
||||
t.Errorf("%s (altGr %v): typed %q, want %q", c.name, altGr, got, want)
|
||||
}
|
||||
if k.state&^fbsdLockMask != 0 || k.alt {
|
||||
t.Errorf("%s (altGr %v): modifiers %#x (alt %v) left down", c.name, altGr, k.state&^fbsdLockMask, k.alt)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Keys that switch consoles and the locks ask the console for what vt would
|
||||
// do cooked: a console by number or the one before or after, and the locks
|
||||
// kept with the keyboard. Scroll Lock asks for nothing, the console's history
|
||||
// mode staying off.
|
||||
func TestFreeBSDConsoleKeysAskTheConsole(t *testing.T) {
|
||||
cases := []struct {
|
||||
name string
|
||||
strokes []stroke
|
||||
want []consoleAct
|
||||
locks uint32
|
||||
}{
|
||||
{"alt f2", hold(keyLeftAlt, press(keyF2)), []consoleAct{{vt: 2}}, 0},
|
||||
{"ctrl alt f1", hold(keyLeftCtrl, hold(keyLeftAlt, press(keyF1))), []consoleAct{{vt: 1}}, 0},
|
||||
{"alt shift f1", hold(keyLeftAlt, hold(keyLeftShift, press(keyF1))), []consoleAct{{vt: 11}}, 0},
|
||||
{"alt f12", hold(keyLeftAlt, press(fbsdKeyF12)), []consoleAct{{vt: 12}}, 0},
|
||||
{"print screen, shifted", slices.Concat(press(fbsdKeyPrint), hold(keyLeftShift, press(fbsdKeyPrint))), []consoleAct{{vt: vtNext}, {vt: vtPrev}}, 0},
|
||||
{"caps lock twice", press(keyCapsLock, keyCapsLock), []consoleAct{{leds: true}, {leds: true}}, 0},
|
||||
{"caps lock held", []stroke{{keyCapsLock, true}, {keyCapsLock, true}, {keyCapsLock, false}}, []consoleAct{{leds: true}}, fbsdCLKED},
|
||||
{"num lock", press(keyNumLock), []consoleAct{{leds: true}}, fbsdNLKED},
|
||||
{"scroll lock", press(keyScrollLk), nil, 0},
|
||||
{"a special key repeats as it went down", []stroke{
|
||||
{keyLeftAlt, true}, {keyF2, true}, {keyLeftAlt, false}, {keyF2, true}, {keyF2, false},
|
||||
}, []consoleAct{{vt: 2}}, 0},
|
||||
}
|
||||
for _, c := range cases {
|
||||
k := &fbsdKeys{km: testFreeBSDKeymap(t)}
|
||||
if _, got := fbsdTypedBy(k, c.strokes); !slices.Equal(got, c.want) {
|
||||
t.Errorf("%s: asked %+v, want %+v", c.name, got, c.want)
|
||||
}
|
||||
if k.state != c.locks {
|
||||
t.Errorf("%s: state %#x, want %#x", c.name, k.state, c.locks)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Translation starts from the console's locks, with no modifier down
|
||||
func TestFreeBSDConsoleSeedsFromTheConsole(t *testing.T) {
|
||||
k := &fbsdKeys{km: testFreeBSDKeymap(t)}
|
||||
fbsdTypedBy(k, []stroke{{keyLeftShift, true}, {keyLeftAlt, true}})
|
||||
k.seed(fbsdNLKED | fbsdCLKED | fbsdShifts1)
|
||||
if got, _ := fbsdTypedBy(k, press(keyKP8, keyA)); got != "8A" {
|
||||
t.Errorf("typed %q, want %q", got, "8A")
|
||||
}
|
||||
if k.isDown(keyLeftShift) || k.state != fbsdNLKED|fbsdCLKED {
|
||||
t.Errorf("seeded state %#x, left shift down %v", k.state, k.isDown(keyLeftShift))
|
||||
}
|
||||
}
|
||||
|
||||
// AltGr, from a key some keymaps bind, and AltGr Lock, from a modifier that
|
||||
// toggles it pressed alone, type the keys' AltGr entries
|
||||
func TestFreeBSDConsoleAltGr(t *testing.T) {
|
||||
km := testFreeBSDKeymap(t)
|
||||
all := func(action uint32) fbsdKey {
|
||||
return fbsdKey{actions: [8]uint32{action, action, action, action, action, action, action, action}, spcl: 0xff}
|
||||
}
|
||||
// AltGr looks every key up in the keymap's AltGr half, modifiers too
|
||||
km.keys[fbsdKeyRightAlt] = all(fbsdASH)
|
||||
km.keys[keyLeftShift] = all(fbsdLSHA)
|
||||
km.keys[fbsdAltGrKeys+keyLeftShift] = all(fbsdLSHA)
|
||||
km.keys[fbsdAltGrKeys+keyA] = fbsdKey{actions: [8]uint32{'α', 'Α', 1, 1, 'α', 'Α', 1, 1}, flgs: fbsdLockC}
|
||||
k := &fbsdKeys{km: km}
|
||||
strokes := slices.Concat(
|
||||
hold(fbsdKeyRightAlt, press(keyA)),
|
||||
press(keyA),
|
||||
press(keyLeftShift), // AltGr Lock on
|
||||
press(keyA),
|
||||
hold(keyLeftShift, press(keyA)), // Shift with a key leaves the lock
|
||||
press(keyLeftShift), // AltGr Lock off
|
||||
press(keyA))
|
||||
got, acts := fbsdTypedBy(k, strokes)
|
||||
if got != "αaαΑa" {
|
||||
t.Errorf("typed %q, want %q", got, "αaαΑa")
|
||||
}
|
||||
if want := []consoleAct{{leds: true}, {leds: true}}; !slices.Equal(acts, want) {
|
||||
t.Errorf("asked %+v, want %+v", acts, want)
|
||||
}
|
||||
if k.state != 0 {
|
||||
t.Errorf("state %#x left", k.state)
|
||||
}
|
||||
}
|
||||
|
||||
// Dead keys type what the accent map makes of the character after them, as
|
||||
// vt does cooked: the accented character, the accent for a space or the dead
|
||||
// key again, and nothing for a character the accent map has no pair for or a
|
||||
// special key, which ends the dead key. Modifiers keep it pending.
|
||||
func TestFreeBSDConsoleDeadKeys(t *testing.T) {
|
||||
km := testFreeBSDKeymap(t)
|
||||
km.keys[keyGrave].actions[0], km.keys[keyGrave].actions[1] = fbsdFACC, fbsdFACC+3 // grave, tilde
|
||||
km.keys[keyGrave].actions[2] = fbsdFACC + 4 // macron, with no accent
|
||||
km.keys[keyGrave].spcl |= 0x80 | 0x40 | 0x20
|
||||
cases := []struct {
|
||||
name string
|
||||
strokes []stroke
|
||||
want string
|
||||
}{
|
||||
{"dead key", press(keyGrave, keyA), "à"},
|
||||
{"shifted dead key", slices.Concat(hold(keyLeftShift, press(keyGrave)), press(keyN)), "ñ"},
|
||||
{"shifted character", slices.Concat(press(keyGrave), hold(keyLeftShift, press(keyA))), "À"},
|
||||
{"dead key and space", press(keyGrave, keySpace), "`"},
|
||||
{"dead key twice", press(keyGrave, keyGrave, keyA), "`a"},
|
||||
{"no pair", press(keyGrave, keyB, keyA), "a"},
|
||||
{"over a cursor key", press(keyGrave, fbsdKeyUp, keyA), "a"},
|
||||
{"no accent", slices.Concat(hold(keyLeftCtrl, press(keyGrave)), press(keyA)), "a"},
|
||||
}
|
||||
for _, c := range cases {
|
||||
k := &fbsdKeys{km: km}
|
||||
if got, _ := fbsdTypedBy(k, c.strokes); got != c.want {
|
||||
t.Errorf("%s: typed %q, want %q", c.name, got, c.want)
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -75,6 +75,12 @@ type inputReader struct {
|
||||
asks chan keyAsk
|
||||
write func(seq []byte, pushed bool) bool
|
||||
|
||||
// The console the backend runs on, nil for none, and how the reader
|
||||
// switches its keyboard raw, and back
|
||||
console keyConsole
|
||||
keysRaw func() (ok, again bool)
|
||||
keysCooked func()
|
||||
|
||||
// Key reporting, the reader's own: the ask it works toward and whether it
|
||||
// is still to be answered, what the terminal reports of each key and the
|
||||
// source releases come from, whether focus reports are parsed, and the
|
||||
@@ -96,6 +102,11 @@ type inputReader struct {
|
||||
protoHas int8
|
||||
decoding bool
|
||||
|
||||
// The console: whether its keyboard refused to go raw, for good (-1) or
|
||||
// for this ask (-2), and the parser reading what it types for a key
|
||||
consoleHas int8
|
||||
typer *inputReader
|
||||
|
||||
mu sync.Mutex
|
||||
running bool
|
||||
}
|
||||
@@ -170,11 +181,23 @@ func (r *inputReader) readLoop() {
|
||||
// Blocking read from backend
|
||||
data, err := r.backend.Read(r.stopCh)
|
||||
if err != nil {
|
||||
r.holds.ReleaseAll(r.sendEvent)
|
||||
r.end()
|
||||
r.sendEvent(Event{Type: EventError, Err: err})
|
||||
return
|
||||
}
|
||||
|
||||
if r.source == KeySourceConsole {
|
||||
r.consoleRead(data)
|
||||
select {
|
||||
case <-r.stopCh:
|
||||
r.end()
|
||||
r.sendEvent(Event{Type: EventClosed})
|
||||
return
|
||||
default:
|
||||
continue
|
||||
}
|
||||
}
|
||||
|
||||
// A paste whose end marker never comes ends when input pauses, so
|
||||
// keys are never swallowed for good; a read may block (wasm)
|
||||
if r.pasting && time.Since(r.pasteSeen) > pasteIdle {
|
||||
@@ -192,7 +215,7 @@ func (r *inputReader) readLoop() {
|
||||
}
|
||||
select {
|
||||
case <-r.stopCh:
|
||||
r.holds.ReleaseAll(r.sendEvent)
|
||||
r.end()
|
||||
r.sendEvent(Event{Type: EventClosed})
|
||||
return
|
||||
default:
|
||||
@@ -218,6 +241,14 @@ func (r *inputReader) readLoop() {
|
||||
}
|
||||
}
|
||||
|
||||
// end releases what is held as input ends, and the console's keyboard
|
||||
func (r *inputReader) end() {
|
||||
r.holds.ReleaseAll(r.sendEvent)
|
||||
if r.source == KeySourceConsole {
|
||||
r.console.cooked()
|
||||
}
|
||||
}
|
||||
|
||||
// parseInput parses raw bytes into events and returns bytes consumed (stop on incomplete sequence)
|
||||
func (r *inputReader) parseInput(data []byte) int {
|
||||
i := 0
|
||||
|
||||
+144
@@ -0,0 +1,144 @@
|
||||
package terminal
|
||||
|
||||
// The console source: a kernel console's keyboard switched to raw keycodes.
|
||||
// Each key types what the console types for it cooked, read as a legacy
|
||||
// terminal's bytes are, and is held by its keycode.
|
||||
|
||||
// keyConsole is a kernel console whose keyboard the reader can switch to raw
|
||||
// keycodes: the Linux console, FreeBSD's vt(4). The reader calls it from its
|
||||
// goroutine; close comes from Fini, on another.
|
||||
type keyConsole interface {
|
||||
// prepare reads what translating keys needs and readies the switch: the
|
||||
// keymap, the guard, output a Scroll Lock stopped. False when the console
|
||||
// can't go raw.
|
||||
prepare() bool
|
||||
|
||||
// raw switches the keyboard to raw keycodes, false when the console refuses
|
||||
raw() bool
|
||||
|
||||
// cooked switches the keyboard back to the mode raw found
|
||||
cooked()
|
||||
|
||||
// keys decodes raw keycodes, keeping a partial one for the next call, and
|
||||
// reports each key event with what the console types for it
|
||||
keys(data []byte, key func(code uint32, action KeyAction, typed []byte))
|
||||
|
||||
// front is whether the console is the one on screen, the one the
|
||||
// keyboard types into
|
||||
front() bool
|
||||
|
||||
// close switches the keyboard back if it is raw and ends the guard
|
||||
close()
|
||||
}
|
||||
|
||||
// consoleAct is what a key asks of the console beside typing
|
||||
type consoleAct struct {
|
||||
vt int // a console to switch to, from 1, or vtPrev or vtNext; zero for none
|
||||
leds bool // the lock flags changed
|
||||
start bool // restart output stopped with Scroll Lock
|
||||
}
|
||||
|
||||
// Console switches a key asks for beside switching to a console by number
|
||||
const (
|
||||
vtPrev = -1 // the console before this one
|
||||
vtNext = -2 // the console after this one
|
||||
)
|
||||
|
||||
// consoleBackend is a backend on a kernel console
|
||||
type consoleBackend interface {
|
||||
keyConsole() keyConsole
|
||||
}
|
||||
|
||||
// backendConsole is the console b runs on, nil for none
|
||||
func backendConsole(b Backend) keyConsole {
|
||||
if c, ok := b.(consoleBackend); ok {
|
||||
return c.keyConsole()
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// rawConsole switches the console's keyboard raw for releases; a console that
|
||||
// refuses is not asked again, or not until the next ask when it may not
|
||||
// refuse then
|
||||
func (r *inputReader) rawConsole() {
|
||||
// An ESC waiting for its timeout was Escape, pressed before the switch
|
||||
if ev, ok := loneEscape[string(r.buf)]; ok {
|
||||
r.sendKey(0, ev)
|
||||
}
|
||||
r.buf = r.buf[:0]
|
||||
if r.keysRaw == nil {
|
||||
r.consoleHas = -1
|
||||
return
|
||||
}
|
||||
if ok, again := r.keysRaw(); !ok {
|
||||
r.consoleHas = -1
|
||||
if again {
|
||||
r.consoleHas = -2
|
||||
}
|
||||
return
|
||||
}
|
||||
r.holds = KeyHolds{}
|
||||
r.source, r.report = KeySourceConsole, KeyReportReleases
|
||||
}
|
||||
|
||||
// consoleRead reads raw keycodes, and ends every hold while another console
|
||||
// has the keyboard: their releases go there
|
||||
func (r *inputReader) consoleRead(data []byte) {
|
||||
if len(data) > 0 {
|
||||
r.console.keys(data, r.consoleKey)
|
||||
}
|
||||
if !r.console.front() {
|
||||
r.holds.ReleaseAll(r.sendEvent)
|
||||
}
|
||||
}
|
||||
|
||||
// consoleKey sends a key event as what the console types for it reads: the
|
||||
// last key held by the keycode, any before it as taps, as a dead key's
|
||||
// character the key types before its own
|
||||
func (r *inputReader) consoleKey(code uint32, action KeyAction, typed []byte) {
|
||||
if action == KeyRelease {
|
||||
r.sendKey(code, Event{Type: EventKey, Action: KeyRelease})
|
||||
return
|
||||
}
|
||||
var last Event
|
||||
have := false
|
||||
r.typedKeys(typed, func(ev Event) {
|
||||
if have {
|
||||
r.sendKey(0, last)
|
||||
}
|
||||
last, have = ev, true
|
||||
})
|
||||
if have {
|
||||
last.Action = action
|
||||
r.sendKey(code, last)
|
||||
}
|
||||
}
|
||||
|
||||
// typedKeys reads what a console types for one key as a legacy terminal's
|
||||
// input reads, the key whole: an ESC it ends with is Escape
|
||||
func (r *inputReader) typedKeys(typed []byte, key func(Event)) {
|
||||
if len(typed) == 0 {
|
||||
return
|
||||
}
|
||||
p := r.typer
|
||||
if p == nil {
|
||||
// A parser of its own: no paste, no protocol, no stop
|
||||
p = &inputReader{eventCh: make(chan Event, 512)}
|
||||
r.typer = p
|
||||
}
|
||||
p.dropCSI = false
|
||||
n := p.parseInput(typed)
|
||||
if ev, ok := loneEscape[string(typed[n:])]; ok {
|
||||
p.sendKey(0, ev)
|
||||
}
|
||||
for {
|
||||
select {
|
||||
case ev := <-p.eventCh:
|
||||
if ev.Type == EventKey && ev.Key != KeyNone {
|
||||
key(ev)
|
||||
}
|
||||
default:
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,289 @@
|
||||
package terminal
|
||||
|
||||
import (
|
||||
"strings"
|
||||
"testing"
|
||||
"time"
|
||||
)
|
||||
|
||||
// fakeConsole is a backend on a Linux console: its keyboard goes raw when
|
||||
// asked, unless it refuses, and raw, its input is K_MEDIUMRAW keycodes typed
|
||||
// by the kernel's built-in keymap
|
||||
type fakeConsole struct {
|
||||
fakeBackend
|
||||
refuse bool
|
||||
notNow int // raw refusals left, as a console that can't go raw just now
|
||||
isRaw bool
|
||||
away bool
|
||||
prepares int
|
||||
rawAt int // how much output the terminal had written when the keyboard went raw
|
||||
cookedAt int // and when it went back
|
||||
closed bool
|
||||
kb linuxKeys
|
||||
dec mediumRaw
|
||||
}
|
||||
|
||||
func newFakeConsole(t *testing.T) *fakeConsole {
|
||||
return &fakeConsole{kb: linuxKeys{km: testKeymap(t)}}
|
||||
}
|
||||
|
||||
func (f *fakeConsole) keySources() KeySource { return KeySourceConsole | KeySourceProtocol }
|
||||
func (f *fakeConsole) keyConsole() keyConsole { return f }
|
||||
func (f *fakeConsole) Fini() { f.close() } // as unixBackend's
|
||||
|
||||
func (f *fakeConsole) prepare() bool {
|
||||
f.mu.Lock()
|
||||
defer f.mu.Unlock()
|
||||
f.prepares++
|
||||
return !f.refuse
|
||||
}
|
||||
|
||||
func (f *fakeConsole) raw() bool {
|
||||
f.mu.Lock()
|
||||
defer f.mu.Unlock()
|
||||
if f.notNow > 0 {
|
||||
f.notNow--
|
||||
return false
|
||||
}
|
||||
f.isRaw, f.rawAt = true, f.out.Len()
|
||||
f.kb.seed(0, 0)
|
||||
return true
|
||||
}
|
||||
|
||||
func (f *fakeConsole) cooked() {
|
||||
f.mu.Lock()
|
||||
defer f.mu.Unlock()
|
||||
if f.isRaw {
|
||||
f.isRaw, f.cookedAt = false, f.out.Len()
|
||||
}
|
||||
}
|
||||
|
||||
func (f *fakeConsole) keys(data []byte, key func(code uint32, action KeyAction, typed []byte)) {
|
||||
f.dec.decode(data, func(code int, down bool) {
|
||||
action := KeyRelease
|
||||
if down {
|
||||
action = KeyPress
|
||||
if f.kb.isDown(code) {
|
||||
action = KeyRepeat
|
||||
}
|
||||
}
|
||||
typed, _ := f.kb.key(code, down, action == KeyRepeat)
|
||||
key(uint32(code), action, typed)
|
||||
})
|
||||
}
|
||||
|
||||
func (f *fakeConsole) front() bool {
|
||||
f.mu.Lock()
|
||||
defer f.mu.Unlock()
|
||||
return !f.away
|
||||
}
|
||||
|
||||
func (f *fakeConsole) close() {
|
||||
f.cooked()
|
||||
f.mu.Lock()
|
||||
f.closed = true
|
||||
f.mu.Unlock()
|
||||
}
|
||||
|
||||
// keyed hands the reader keycodes, as the raw console sends them
|
||||
func (f *fakeConsole) keyed(codes ...byte) {
|
||||
f.mu.Lock()
|
||||
f.chunks = append(f.chunks, string(codes))
|
||||
f.mu.Unlock()
|
||||
}
|
||||
|
||||
// state reads the fake's fields under its lock
|
||||
func (f *fakeConsole) state() (isRaw bool, prepares int, out string, rawAt, cookedAt int, closed bool) {
|
||||
f.mu.Lock()
|
||||
defer f.mu.Unlock()
|
||||
return f.isRaw, f.prepares, f.out.String(), f.rawAt, f.cookedAt, f.closed
|
||||
}
|
||||
|
||||
// up is a keycode's release byte
|
||||
func up(code byte) byte { return code | 0x80 }
|
||||
|
||||
// keyEvent is a key event as the console source sends it
|
||||
func keyEvent(action KeyAction, r rune, lost bool) Event {
|
||||
return Event{Type: EventKey, Key: KeyRune, Rune: r, Action: action, Lost: lost}
|
||||
}
|
||||
|
||||
// The console's keyboard goes raw when releases are asked of it, before the
|
||||
// protocol. Raw, each key types as it does cooked and is held by its keycode:
|
||||
// Shift let go first still releases 'A', a key held repeats, and another
|
||||
// console taking the keyboard ends the holds Lost. Mouse reports are off while
|
||||
// the keyboard is raw, the console having taken that first, and come back on
|
||||
// with it. Going back to presses switches the keyboard back, and so does the
|
||||
// input ending at Fini, before the backend closes the console.
|
||||
func TestConsoleSourceComesAndGoes(t *testing.T) {
|
||||
f := newFakeConsole(t)
|
||||
term := newTerm(f, ColorModeNone)
|
||||
if err := term.Init(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
term.SetMouseMode(MouseModeClick)
|
||||
|
||||
term.SetKeyReport(KeyReportReleases, KeySourceConsole|KeySourceProtocol)
|
||||
if ev := poll(t, term); ev.Type != EventKeyReport || ev.Report != KeyReportReleases || ev.Source != KeySourceConsole {
|
||||
t.Fatalf("answered %+v, want releases from the console", ev)
|
||||
}
|
||||
isRaw, _, out, rawAt, _, _ := f.state()
|
||||
if !isRaw {
|
||||
t.Fatal("keyboard not raw")
|
||||
}
|
||||
if !strings.Contains(out[:rawAt], string(csiMouseClickOff)) {
|
||||
t.Errorf("mouse reports still on as the keyboard went raw: %q", out[:rawAt])
|
||||
}
|
||||
|
||||
f.keyed(keyLeftShift, keyA, up(keyLeftShift), up(keyA))
|
||||
f.keyed(keyQ, keyQ, up(keyQ))
|
||||
f.keyed(keyEnter, up(keyEnter))
|
||||
want := []Event{
|
||||
keyEvent(KeyPress, 'A', false), keyEvent(KeyRelease, 'A', false),
|
||||
keyEvent(KeyPress, 'q', false), keyEvent(KeyRepeat, 'q', false), keyEvent(KeyRelease, 'q', false),
|
||||
{Type: EventKey, Key: KeyEnter, Action: KeyPress}, {Type: EventKey, Key: KeyEnter, Action: KeyRelease},
|
||||
}
|
||||
for i, w := range want {
|
||||
if ev := poll(t, term); ev != w {
|
||||
t.Fatalf("event %d: %+v, want %+v", i, ev, w)
|
||||
}
|
||||
}
|
||||
|
||||
f.keyed(keyA)
|
||||
if ev := poll(t, term); ev != keyEvent(KeyPress, 'a', false) {
|
||||
t.Fatalf("got %+v, want a press of 'a'", ev)
|
||||
}
|
||||
f.mu.Lock()
|
||||
f.away = true
|
||||
f.mu.Unlock()
|
||||
if ev := poll(t, term); ev != keyEvent(KeyRelease, 'a', true) {
|
||||
t.Fatalf("got %+v, want 'a' released Lost", ev)
|
||||
}
|
||||
f.mu.Lock()
|
||||
f.away = false
|
||||
f.mu.Unlock()
|
||||
|
||||
term.SetKeyReport(KeyReportPresses, 0)
|
||||
if ev := poll(t, term); ev.Type != EventKeyReport || ev.Report != KeyReportPresses || ev.Source != 0 {
|
||||
t.Fatalf("answered %+v, want presses", ev)
|
||||
}
|
||||
waitFor(t, "mouse reports back on", func() bool {
|
||||
isRaw, _, out, _, cookedAt, _ := f.state()
|
||||
return !isRaw && strings.Contains(out[cookedAt:], string(csiMouseClickOn))
|
||||
})
|
||||
|
||||
term.SetKeyReport(KeyReportReleases, KeySourceConsole)
|
||||
poll(t, term)
|
||||
f.mu.Lock()
|
||||
f.closed = false
|
||||
f.mu.Unlock()
|
||||
term.input.stop()
|
||||
if isRaw, _, _, _, _, closed := f.state(); isRaw || closed {
|
||||
t.Errorf("input ended with the keyboard raw %v, the console closed %v", isRaw, closed)
|
||||
}
|
||||
term.Fini()
|
||||
if _, _, _, _, _, closed := f.state(); !closed {
|
||||
t.Error("Fini left the console open")
|
||||
}
|
||||
}
|
||||
|
||||
// A console that can't go raw is not asked again: the protocol is next, and
|
||||
// the console here doesn't answer its questions
|
||||
func TestConsoleRefusingIsAskedOnce(t *testing.T) {
|
||||
f := newFakeConsole(t)
|
||||
f.refuse = true
|
||||
old := protoTimeout
|
||||
protoTimeout = 50 * time.Millisecond
|
||||
defer func() { protoTimeout = old }()
|
||||
term := newTerm(f, ColorModeNone)
|
||||
if err := term.Init(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
defer term.Fini()
|
||||
for range 2 {
|
||||
term.SetKeyReport(KeyReportReleases, KeySourceConsole|KeySourceProtocol)
|
||||
if ev := poll(t, term); ev.Type != EventKeyReport || ev.Report != KeyReportPresses {
|
||||
t.Fatalf("answered %+v, want presses", ev)
|
||||
}
|
||||
}
|
||||
if _, prepares, _, _, _, _ := f.state(); prepares != 1 {
|
||||
t.Errorf("console asked %d times, want once", prepares)
|
||||
}
|
||||
}
|
||||
|
||||
// A console that can't go raw just now is asked again at the next ask, and
|
||||
// mouse reports come back on after the refusal
|
||||
func TestConsoleRefusingNowIsAskedAgain(t *testing.T) {
|
||||
f := newFakeConsole(t)
|
||||
f.notNow = 1
|
||||
old := protoTimeout
|
||||
protoTimeout = 50 * time.Millisecond
|
||||
defer func() { protoTimeout = old }()
|
||||
term := newTerm(f, ColorModeNone)
|
||||
if err := term.Init(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
defer term.Fini()
|
||||
term.SetMouseMode(MouseModeClick)
|
||||
term.SetKeyReport(KeyReportReleases, KeySourceConsole|KeySourceProtocol)
|
||||
if ev := poll(t, term); ev.Type != EventKeyReport || ev.Report != KeyReportPresses {
|
||||
t.Fatalf("answered %+v, want presses", ev)
|
||||
}
|
||||
waitFor(t, "mouse reports back on", func() bool {
|
||||
_, _, out, _, _, _ := f.state()
|
||||
return strings.Count(out, string(csiMouseClickOn)) == 2
|
||||
})
|
||||
term.SetKeyReport(KeyReportReleases, KeySourceConsole|KeySourceProtocol)
|
||||
if ev := poll(t, term); ev.Type != EventKeyReport || ev.Source != KeySourceConsole {
|
||||
t.Fatalf("answered %+v, want releases from the console", ev)
|
||||
}
|
||||
if _, prepares, _, _, _, _ := f.state(); prepares != 2 {
|
||||
t.Errorf("console prepared %d times, want twice", prepares)
|
||||
}
|
||||
}
|
||||
|
||||
// Mouse reporting asked for while the keyboard is raw starts once it is
|
||||
// cooked again
|
||||
func TestConsoleHoldsMouseReportsWhileRaw(t *testing.T) {
|
||||
f := newFakeConsole(t)
|
||||
term := newTerm(f, ColorModeNone)
|
||||
if err := term.Init(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
defer term.Fini()
|
||||
term.SetKeyReport(KeyReportReleases, KeySourceConsole)
|
||||
poll(t, term)
|
||||
term.SetMouseMode(MouseModeClick | MouseModeDrag)
|
||||
if _, _, out, rawAt, _, _ := f.state(); strings.Contains(out[rawAt:], string(csiMouseSGROn)) {
|
||||
t.Fatalf("mouse reports on while raw: %q", out[rawAt:])
|
||||
}
|
||||
term.SetKeyReport(KeyReportPresses, 0)
|
||||
poll(t, term)
|
||||
waitFor(t, "mouse reports on", func() bool {
|
||||
_, _, out, _, cookedAt, _ := f.state()
|
||||
return strings.Contains(out[cookedAt:], string(csiMouseDragOn))
|
||||
})
|
||||
}
|
||||
|
||||
// A key whose string reads as several keys taps all but the last, which it
|
||||
// holds by its keycode
|
||||
func TestConsoleKeyTypingSeveralKeys(t *testing.T) {
|
||||
f := newFakeConsole(t)
|
||||
f.kb.km.funcs[0] = "ab" // F1
|
||||
term := newTerm(f, ColorModeNone)
|
||||
if err := term.Init(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
defer term.Fini()
|
||||
term.SetKeyReport(KeyReportReleases, KeySourceConsole)
|
||||
poll(t, term)
|
||||
f.keyed(keyF1, up(keyF1))
|
||||
want := []Event{
|
||||
keyEvent(KeyPress, 'a', false), keyEvent(KeyRelease, 'a', false), keyEvent(KeyPress, 'b', false),
|
||||
keyEvent(KeyRelease, 'b', false),
|
||||
}
|
||||
for i, w := range want {
|
||||
if ev := poll(t, term); ev != w {
|
||||
t.Fatalf("event %d: %+v, want %+v", i, ev, w)
|
||||
}
|
||||
}
|
||||
}
|
||||
+170
@@ -0,0 +1,170 @@
|
||||
//go:build linux || freebsd
|
||||
|
||||
package terminal
|
||||
|
||||
import (
|
||||
"io"
|
||||
"os"
|
||||
"os/exec"
|
||||
"os/signal"
|
||||
"syscall"
|
||||
"time"
|
||||
"unsafe"
|
||||
|
||||
"golang.org/x/sys/unix"
|
||||
)
|
||||
|
||||
// The guard restores a console keyboard the game leaves raw by dying where no
|
||||
// handler of its own runs: SIGKILL, the OOM killer, a Go fatal error. Before
|
||||
// the first raw switch the package runs its program's binary again with
|
||||
// guardEnv set, which the package's init catches before main. The guard keeps
|
||||
// the console and the read end of a pipe whose write end only the game holds:
|
||||
// the pipe's end is the game's, and if the keyboard is raw then, the guard
|
||||
// switches it back, restores the termios and shows the cursor.
|
||||
|
||||
// guardEnv marks a run of the binary as a guard, which ps lists as guardName
|
||||
const (
|
||||
guardEnv = "LIXENWRAITH_TERMINAL_GUARD"
|
||||
guardName = "console-guard"
|
||||
)
|
||||
|
||||
// The guard's messages: armed with the keyboard mode and termios to restore,
|
||||
// or disarmed
|
||||
const (
|
||||
guardArm = 'A'
|
||||
guardDisarm = 'D'
|
||||
)
|
||||
|
||||
func init() {
|
||||
if os.Getenv(guardEnv) == "1" {
|
||||
nameGuard()
|
||||
os.Exit(runGuard(os.NewFile(3, "guard"), os.NewFile(4, "console")))
|
||||
}
|
||||
}
|
||||
|
||||
// keyGuard is the game's end of its guard
|
||||
type keyGuard struct {
|
||||
w *os.File // the pipe's write end, closed on exec in any other child
|
||||
}
|
||||
|
||||
// startGuard runs the guard over tty
|
||||
func startGuard(tty *os.File) (*keyGuard, error) {
|
||||
exe, err := guardExecutable()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
r, w, err := os.Pipe()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer r.Close()
|
||||
// Named apart from the game, which on Linux spares it a kill by the
|
||||
// game's name
|
||||
cmd := exec.Command(exe)
|
||||
cmd.Args = []string{guardName}
|
||||
cmd.Env = append(os.Environ(), guardEnv+"=1")
|
||||
cmd.ExtraFiles = []*os.File{r, tty}
|
||||
// A group of its own, so a kill of the game's job leaves it to restore.
|
||||
// A game leading its session takes the console with it as it dies, the
|
||||
// kernel hanging the console up: its guard leads a session of its own, to
|
||||
// take the console up again.
|
||||
cmd.SysProcAttr = &syscall.SysProcAttr{Setpgid: true}
|
||||
if sid, err := unix.Getsid(0); err == nil && sid == os.Getpid() {
|
||||
cmd.SysProcAttr = &syscall.SysProcAttr{Setsid: true}
|
||||
}
|
||||
if err := cmd.Start(); err != nil {
|
||||
w.Close()
|
||||
return nil, err
|
||||
}
|
||||
go cmd.Wait()
|
||||
return &keyGuard{w: w}, nil
|
||||
}
|
||||
|
||||
// termiosBytes is t as the guard reads it, the same binary on both ends
|
||||
func termiosBytes(t *unix.Termios) []byte {
|
||||
return unsafe.Slice((*byte)(unsafe.Pointer(t)), unsafe.Sizeof(*t))
|
||||
}
|
||||
|
||||
// arm tells the guard the keyboard is about to go raw, and what restores it;
|
||||
// false when the guard is gone. One write, under the pipe's atomic size.
|
||||
func (g *keyGuard) arm(mode int, cooked *unix.Termios) bool {
|
||||
_, err := g.w.Write(append([]byte{guardArm, byte(mode)}, termiosBytes(cooked)...))
|
||||
return err == nil
|
||||
}
|
||||
|
||||
// disarm tells the guard the keyboard is cooked again
|
||||
func (g *keyGuard) disarm() { g.w.Write([]byte{guardDisarm}) }
|
||||
|
||||
// close ends the guard, which exits disarmed
|
||||
func (g *keyGuard) close() { g.w.Close() }
|
||||
|
||||
// guardReset is what the guard writes after restoring the keyboard: mouse
|
||||
// reports off, the cursor shown, attributes reset, but no RIS, which would
|
||||
// clear the message the game died with
|
||||
var guardReset = string(csiMouseMotionOff) + string(csiMouseDragOff) + string(csiMouseClickOff) +
|
||||
string(csiMouseSGROff) + string(csiPasteOff) + string(csiCursorShow) + string(csiSGR0) + string(csiAutoWrapOn)
|
||||
|
||||
// runGuard waits on cmds until the game is gone, and restores the console
|
||||
// tty if the keyboard was raw then
|
||||
func runGuard(cmds, tty *os.File) int {
|
||||
signal.Ignore(syscall.SIGHUP, syscall.SIGINT, syscall.SIGQUIT, syscall.SIGTERM,
|
||||
syscall.SIGTSTP, syscall.SIGTTIN, syscall.SIGTTOU, syscall.SIGPIPE)
|
||||
path := consolePath(tty)
|
||||
armed, mode, cooked := guardWait(cmds)
|
||||
if armed {
|
||||
guardRestore(tty, path, mode, func(fd int) {
|
||||
unix.IoctlSetTermios(fd, tcsets, &cooked)
|
||||
unix.Write(fd, []byte(guardReset))
|
||||
})
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
// guardReopenFor is how long the guard tries to open again a console its
|
||||
// game took along
|
||||
const guardReopenFor = 2 * time.Second
|
||||
|
||||
// guardReopen opens the console at path again, until its keyboard switches
|
||||
// back to mode or guardReopenFor passes, and has rest restore the rest
|
||||
// through it
|
||||
func guardReopen(path string, mode int, rest func(fd int)) {
|
||||
if path == "" {
|
||||
return
|
||||
}
|
||||
for end := time.Now().Add(guardReopenFor); time.Now().Before(end); time.Sleep(10 * time.Millisecond) {
|
||||
f, err := os.OpenFile(path, os.O_RDWR, 0)
|
||||
if err != nil {
|
||||
continue
|
||||
}
|
||||
ok := unix.IoctlSetInt(int(f.Fd()), kdSetKeyboardMode, mode) == nil
|
||||
if ok {
|
||||
rest(int(f.Fd()))
|
||||
}
|
||||
f.Close()
|
||||
if ok {
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// guardWait reads the game's messages to their end: whether the guard was
|
||||
// armed then, and with what
|
||||
func guardWait(cmds io.Reader) (armed bool, mode int, cooked unix.Termios) {
|
||||
var msg [1]byte
|
||||
arg := make([]byte, 1+len(termiosBytes(&cooked)))
|
||||
for {
|
||||
if _, err := io.ReadFull(cmds, msg[:]); err != nil {
|
||||
return armed, mode, cooked
|
||||
}
|
||||
switch msg[0] {
|
||||
case guardArm:
|
||||
if _, err := io.ReadFull(cmds, arg); err != nil {
|
||||
return armed, mode, cooked
|
||||
}
|
||||
armed, mode = true, int(arg[0])
|
||||
copy(termiosBytes(&cooked), arg[1:])
|
||||
case guardDisarm:
|
||||
armed = false
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,171 @@
|
||||
//go:build linux
|
||||
|
||||
package terminal
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"fmt"
|
||||
"io"
|
||||
"os"
|
||||
"os/exec"
|
||||
"strings"
|
||||
"syscall"
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
"golang.org/x/sys/unix"
|
||||
)
|
||||
|
||||
// The guard ends armed with the last arm's mode and termios when the arms
|
||||
// outnumber the disarms, and disarmed otherwise
|
||||
func TestGuardFollowsArmsToTheEnd(t *testing.T) {
|
||||
arm := func(mode byte, iflag uint32) []byte {
|
||||
tio := unix.Termios{Iflag: iflag}
|
||||
return append([]byte{guardArm, mode}, termiosBytes(&tio)...)
|
||||
}
|
||||
cases := []struct {
|
||||
name string
|
||||
msgs [][]byte
|
||||
armed bool
|
||||
mode int
|
||||
iflag uint32
|
||||
}{
|
||||
{"never armed", nil, false, 0, 0},
|
||||
{"armed", [][]byte{arm(3, 7)}, true, 3, 7},
|
||||
{"disarmed", [][]byte{arm(3, 7), {guardDisarm}}, false, 0, 0},
|
||||
{"armed again", [][]byte{arm(3, 7), {guardDisarm}, arm(1, 9)}, true, 1, 9},
|
||||
{"cut off arming", [][]byte{{guardArm, 3, 1, 2}}, false, 0, 0},
|
||||
}
|
||||
for _, c := range cases {
|
||||
armed, mode, tio := guardWait(bytes.NewReader(bytes.Join(c.msgs, nil)))
|
||||
if armed != c.armed || armed && (mode != c.mode || tio.Iflag != c.iflag) {
|
||||
t.Errorf("%s: armed %v mode %d iflag %d, want %v %d %d", c.name, armed, mode, tio.Iflag, c.armed, c.mode, c.iflag)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// openPty opens a pty pair, the far end standing in for the console
|
||||
func openPty(t *testing.T) (master, tty *os.File) {
|
||||
t.Helper()
|
||||
master, err := os.OpenFile("/dev/ptmx", os.O_RDWR|syscall.O_NOCTTY, 0)
|
||||
if err != nil {
|
||||
t.Skip("no pty:", err)
|
||||
}
|
||||
if err := unix.IoctlSetPointerInt(int(master.Fd()), unix.TIOCSPTLCK, 0); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
n, err := unix.IoctlGetInt(int(master.Fd()), unix.TIOCGPTN)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
tty, err = os.OpenFile(fmt.Sprintf("/dev/pts/%d", n), os.O_RDWR|syscall.O_NOCTTY, 0)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
t.Cleanup(func() { tty.Close(); master.Close() })
|
||||
return master, tty
|
||||
}
|
||||
|
||||
// guardGame is a game for TestGuardRestoresWhenTheGameIsKilled: it guards the
|
||||
// pty it is handed, arms the guard with the pty's termios as cooked, makes
|
||||
// the pty raw, says so and waits to be killed
|
||||
func TestGuardGame(t *testing.T) {
|
||||
path := os.Getenv("TERMINAL_TEST_GUARD_GAME")
|
||||
if path == "" {
|
||||
t.Skip("run by TestGuardRestoresWhenTheGameIsKilled")
|
||||
}
|
||||
tty, err := os.OpenFile(path, os.O_RDWR|syscall.O_NOCTTY, 0)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
cooked, err := unix.IoctlGetTermios(int(tty.Fd()), tcgets)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
g, err := startGuard(tty)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if !g.arm(kUnicode, cooked) {
|
||||
t.Fatal("arming failed")
|
||||
}
|
||||
raw := *cooked
|
||||
raw.Lflag &^= unix.ICANON | unix.ECHO | unix.ISIG
|
||||
if err := unix.IoctlSetTermios(int(tty.Fd()), tcsets, &raw); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if os.Getenv("TERMINAL_TEST_GUARD_DISARM") != "" {
|
||||
g.disarm()
|
||||
}
|
||||
fmt.Println("raw")
|
||||
time.Sleep(time.Minute)
|
||||
}
|
||||
|
||||
// A game killed with its console raw leaves the guard to restore it: the
|
||||
// termios the game found, and the cursor shown, with no reset that would
|
||||
// clear the game's last words; a game that disarmed first leaves it as it was
|
||||
func TestGuardRestoresWhenTheGameIsKilled(t *testing.T) {
|
||||
for _, disarm := range []bool{false, true} {
|
||||
master, tty := openPty(t)
|
||||
cooked, err := unix.IoctlGetTermios(int(tty.Fd()), tcgets)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
game := exec.Command(os.Args[0], "-test.run=^TestGuardGame$", "-test.v")
|
||||
game.Env = append(os.Environ(), "TERMINAL_TEST_GUARD_GAME="+tty.Name())
|
||||
if disarm {
|
||||
game.Env = append(game.Env, "TERMINAL_TEST_GUARD_DISARM=1")
|
||||
}
|
||||
stdout, err := game.StdoutPipe()
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := game.Start(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
lines := bufio.NewScanner(stdout)
|
||||
for lines.Scan() && lines.Text() != "raw" {
|
||||
}
|
||||
game.Process.Kill()
|
||||
game.Wait()
|
||||
|
||||
restored := func() bool {
|
||||
now, err := unix.IoctlGetTermios(int(tty.Fd()), tcgets)
|
||||
return err == nil && now.Lflag == cooked.Lflag
|
||||
}
|
||||
if !disarm {
|
||||
waitFor(t, "the termios restored", restored)
|
||||
out := readPending(t, master)
|
||||
if !strings.Contains(out, string(csiCursorShow)) || strings.Contains(out, string(csiRIS)) {
|
||||
t.Errorf("guard wrote %q, want the cursor shown and no reset", out)
|
||||
}
|
||||
continue
|
||||
}
|
||||
time.Sleep(200 * time.Millisecond)
|
||||
if restored() {
|
||||
t.Error("a disarmed guard restored the termios")
|
||||
}
|
||||
if out := readPending(t, master); out != "" {
|
||||
t.Errorf("a disarmed guard wrote %q", out)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// readPending is what the pty's master has to read now
|
||||
func readPending(t *testing.T, master *os.File) string {
|
||||
t.Helper()
|
||||
fds := []unix.PollFd{{Fd: int32(master.Fd()), Events: unix.POLLIN}}
|
||||
var out []byte
|
||||
buf := make([]byte, 4096)
|
||||
for {
|
||||
if n, err := unix.Poll(fds, 100); err != nil || n == 0 {
|
||||
return string(out)
|
||||
}
|
||||
n, err := master.Read(buf)
|
||||
if err != nil && err != io.EOF || n == 0 {
|
||||
return string(out)
|
||||
}
|
||||
out = append(out, buf[:n]...)
|
||||
}
|
||||
}
|
||||
+11
-1
@@ -95,6 +95,9 @@ func (r *inputReader) serviceKeys() {
|
||||
select {
|
||||
case a := <-r.asks:
|
||||
r.want, r.answer = a, true
|
||||
if r.consoleHas == -2 {
|
||||
r.consoleHas = 0 // refused the last ask only
|
||||
}
|
||||
default:
|
||||
}
|
||||
if r.exchange != exchangeNone && time.Now().After(r.deadline) {
|
||||
@@ -112,6 +115,8 @@ func (r *inputReader) target() KeySource {
|
||||
return 0
|
||||
case r.source != 0 && a.allow&r.source != 0:
|
||||
return r.source
|
||||
case a.allow&KeySourceConsole != 0 && r.consoleHas >= 0:
|
||||
return KeySourceConsole
|
||||
case a.allow&KeySourceProtocol != 0 && r.protoHas >= 0:
|
||||
return KeySourceProtocol
|
||||
}
|
||||
@@ -128,6 +133,8 @@ func (r *inputReader) reconcile() {
|
||||
r.sendEvent(Event{Type: EventKeyReport, Report: r.report, Source: r.source})
|
||||
case r.source != 0:
|
||||
r.leave()
|
||||
case target == KeySourceConsole:
|
||||
r.rawConsole()
|
||||
case r.protoHas == 0:
|
||||
r.request(exchangeProbe, false, csiKeyQuery, csiDA1)
|
||||
default:
|
||||
@@ -195,8 +202,11 @@ func (r *inputReader) leave() {
|
||||
r.holds.ReleaseAll(r.sendEvent)
|
||||
source := r.source
|
||||
r.source, r.report, r.focus = 0, KeyReportPresses, false
|
||||
if source == KeySourceProtocol {
|
||||
switch source {
|
||||
case KeySourceProtocol:
|
||||
r.request(exchangePop, false, csiKeyPop, csiFocusOff, csiDA1)
|
||||
case KeySourceConsole:
|
||||
r.keysCooked()
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
+485
@@ -0,0 +1,485 @@
|
||||
package terminal
|
||||
|
||||
import (
|
||||
"strconv"
|
||||
"unicode/utf8"
|
||||
)
|
||||
|
||||
// The Linux console's keymap and its translation of keycodes, after the
|
||||
// kernel's own (drivers/tty/vt/keyboard.c), so a keyboard switched to raw
|
||||
// keycodes types what the console types with it cooked. Keysyms are kept as
|
||||
// the kernel keeps them: 0xf000 | type<<8 | value for a typed one, anything
|
||||
// less a Unicode code point.
|
||||
|
||||
// Keysym types (linux/keyboard.h)
|
||||
const (
|
||||
ktLatin = iota // a Latin-1 character
|
||||
ktFn // a function key's string
|
||||
ktSpec // a console function: Enter, the locks, console switching
|
||||
ktPad // a keypad key
|
||||
ktDead // a dead key
|
||||
ktCons // a switch to a console
|
||||
ktCur // a cursor key
|
||||
ktShift // a modifier
|
||||
ktMeta // Alt with a character
|
||||
ktASCII // a digit of a code typed with Alt held
|
||||
ktLock // a modifier lock
|
||||
ktLetter // a letter, which Caps Lock shifts
|
||||
ktSLock // a sticky modifier
|
||||
ktDead2 // a dead key by its character
|
||||
ktBrl // a braille dot
|
||||
ktCSI // a CSI ~ key that says its modifiers (kernel 7.1 and later)
|
||||
)
|
||||
|
||||
// Modifier groups, the bits of the shift state (linux/keyboard.h)
|
||||
const (
|
||||
kgShift = iota
|
||||
kgAltGr
|
||||
kgCtrl
|
||||
kgAlt
|
||||
kgShiftL
|
||||
kgShiftR
|
||||
kgCtrlL
|
||||
kgCtrlR
|
||||
kgCapsShift
|
||||
nrShift
|
||||
)
|
||||
|
||||
// The lock flags, as KDGKBLED reports them
|
||||
const (
|
||||
ledScroll = 1 << iota
|
||||
ledNum
|
||||
ledCaps
|
||||
)
|
||||
|
||||
const (
|
||||
nrKeys = 256 // keycodes a keymap maps
|
||||
kNoSuchMap = 0x027f // KDGKBENT's answer for the first key of a map the keymap lacks
|
||||
symHole = 0xf200 // K_HOLE as the kernel keeps it: a key that does nothing
|
||||
)
|
||||
|
||||
// linuxKeymap is a Linux console keymap as KDGKBENT, KDGKBSENT and
|
||||
// KDGKBDIACRUC read it
|
||||
type linuxKeymap struct {
|
||||
maps [256]*[nrKeys]uint16 // by shift state, nil where the keymap has none
|
||||
funcs [256]string // the function keys' strings
|
||||
accents []linuxAccent // what a dead key makes of the character after it
|
||||
escMeta bool // Meta keys type ESC and the character (K_ESCPREFIX), else it with bit 7 set
|
||||
csiMods bool // cursor and CSI keys say their modifiers, as from kernel 7.1
|
||||
}
|
||||
|
||||
// linuxAccent is an accented character: a dead key's character and the
|
||||
// character typed after it
|
||||
type linuxAccent struct {
|
||||
diacr, base, result rune
|
||||
}
|
||||
|
||||
// linuxKeys translates keycodes as the Linux console does in Unicode mode,
|
||||
// keeping its modifiers, locks, lock flags and dead keys. Codes typed with
|
||||
// Alt and the keypad and braille type nothing; the keypad and cursor keys
|
||||
// type as they do outside application mode, which the package never sets.
|
||||
type linuxKeys struct {
|
||||
km *linuxKeymap
|
||||
down [nrKeys / 64]uint64 // keys down
|
||||
shiftDown [nrShift]uint8 // keys down of each modifier
|
||||
shift uint16 // modifiers down
|
||||
lock uint16 // modifiers locked
|
||||
slock uint16 // modifiers stuck for the next key
|
||||
leds uint8 // lock flags
|
||||
diacr rune // a dead key's character, for the next character
|
||||
deadNext bool // compose: the next character is a dead key's
|
||||
}
|
||||
|
||||
// seed starts translation from the console's state: the modifiers it has
|
||||
// down and its lock flags; keys already down are not known
|
||||
func (k *linuxKeys) seed(shift, leds uint8) {
|
||||
*k = linuxKeys{km: k.km, leds: leds & (ledScroll | ledNum | ledCaps)}
|
||||
for g := range nrShift {
|
||||
if shift&(1<<g) != 0 {
|
||||
k.shiftDown[g], k.shift = 1, k.shift|1<<g
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// isDown is whether a key is down
|
||||
func (k *linuxKeys) isDown(code int) bool {
|
||||
return code < nrKeys && k.down[code/64]&(1<<(code%64)) != 0
|
||||
}
|
||||
|
||||
// key translates one keycode event: down for a press, rep for a repeat. It
|
||||
// returns what the console types for it and what it asks of the console.
|
||||
func (k *linuxKeys) key(code int, down, rep bool) (typed []byte, act consoleAct) {
|
||||
if code >= nrKeys {
|
||||
return nil, act // past every keymap
|
||||
}
|
||||
if down {
|
||||
k.down[code/64] |= 1 << (code % 64)
|
||||
} else {
|
||||
k.down[code/64] &^= 1 << (code % 64)
|
||||
}
|
||||
|
||||
state := ((k.shift | k.slock) ^ k.lock) & 0xff
|
||||
km := k.km.maps[state]
|
||||
// A key that says its modifiers falls back to the plain map when the
|
||||
// modifiers have no map: the kernel compares the entry with the bare
|
||||
// K_HOLE, which no kept entry is, so a hole in a map stays a hole
|
||||
if km == nil && state != 0 && k.km.csiMods && k.km.maps[0] != nil {
|
||||
if t := symType(k.km.maps[0][code]); t == ktCur || t == ktCSI {
|
||||
km = k.km.maps[0]
|
||||
}
|
||||
}
|
||||
if km == nil {
|
||||
k.computeShift()
|
||||
k.slock = 0
|
||||
return nil, act
|
||||
}
|
||||
|
||||
sym := km[code]
|
||||
if sym < 0xf000 {
|
||||
if down {
|
||||
typed = k.unicode(typed, rune(sym))
|
||||
}
|
||||
return typed, act
|
||||
}
|
||||
t, val := symType(sym), byte(sym)
|
||||
if t == ktLetter {
|
||||
t = ktLatin
|
||||
// The kernel takes the shifted entry's value, whatever its type
|
||||
if k.leds&ledCaps != 0 {
|
||||
if m := k.km.maps[state^1<<kgShift]; m != nil {
|
||||
val = byte(m[code])
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
switch t {
|
||||
case ktLatin:
|
||||
if down {
|
||||
typed = k.unicode(typed, rune(val))
|
||||
}
|
||||
case ktFn:
|
||||
if down {
|
||||
typed = append(typed, k.km.funcs[val]...)
|
||||
}
|
||||
case ktSpec:
|
||||
if down {
|
||||
typed, act = k.spec(val, rep)
|
||||
}
|
||||
case ktPad:
|
||||
if down {
|
||||
typed = k.pad(val)
|
||||
}
|
||||
case ktDead:
|
||||
if down && int(val) < len(deadChars) {
|
||||
typed = k.dead(typed, rune(deadChars[val]))
|
||||
}
|
||||
case ktDead2:
|
||||
if down {
|
||||
typed = k.dead(typed, rune(val))
|
||||
}
|
||||
case ktCons:
|
||||
if down {
|
||||
act.vt = int(val) + 1
|
||||
}
|
||||
case ktCur:
|
||||
if down {
|
||||
typed = k.cur(val)
|
||||
}
|
||||
case ktShift:
|
||||
k.shiftKey(val, down, rep)
|
||||
case ktMeta:
|
||||
if down && k.km.escMeta {
|
||||
typed = append(typed, 0x1b, val)
|
||||
} else if down {
|
||||
typed = append(typed, val|0x80)
|
||||
}
|
||||
case ktLock:
|
||||
if down && !rep && val < 16 {
|
||||
k.lock ^= 1 << val
|
||||
}
|
||||
case ktSLock:
|
||||
k.shiftKey(val, down, rep)
|
||||
if down && !rep && val < 16 {
|
||||
k.slock ^= 1 << val
|
||||
if k.km.maps[(k.lock^k.slock)&0xff] == nil {
|
||||
k.slock = 1 << val
|
||||
}
|
||||
}
|
||||
case ktCSI:
|
||||
if down && k.km.csiMods {
|
||||
typed = k.csi(val)
|
||||
}
|
||||
}
|
||||
if t != ktSLock {
|
||||
k.slock = 0
|
||||
}
|
||||
return typed, act
|
||||
}
|
||||
|
||||
// deadChars are the characters of the dead keys KT_DEAD names by number, as
|
||||
// the accent table knows them
|
||||
const deadChars = "`'^~\",_U.*=cki#o!?+-)(:n;$@"
|
||||
|
||||
// unicode types ch, or what a dead key before it makes of it; after compose,
|
||||
// ch is the dead key
|
||||
func (k *linuxKeys) unicode(typed []byte, ch rune) []byte {
|
||||
if k.diacr != 0 {
|
||||
ch, typed = k.combine(typed, ch)
|
||||
}
|
||||
if k.deadNext {
|
||||
k.deadNext, k.diacr = false, ch
|
||||
return typed
|
||||
}
|
||||
return utf8.AppendRune(typed, ch)
|
||||
}
|
||||
|
||||
// dead is a dead key: the next character takes its accent; one already
|
||||
// pending combines with it first
|
||||
func (k *linuxKeys) dead(typed []byte, ch rune) []byte {
|
||||
if k.diacr != 0 {
|
||||
ch, typed = k.combine(typed, ch)
|
||||
}
|
||||
k.diacr = ch
|
||||
return typed
|
||||
}
|
||||
|
||||
// combine is what the pending dead key makes of ch: their accented character,
|
||||
// the dead key's own for space or itself, else ch with the dead key's
|
||||
// character typed before it
|
||||
func (k *linuxKeys) combine(typed []byte, ch rune) (rune, []byte) {
|
||||
d := k.diacr
|
||||
k.diacr = 0
|
||||
for _, a := range k.km.accents {
|
||||
if a.diacr == d && a.base == ch {
|
||||
return a.result, typed
|
||||
}
|
||||
}
|
||||
if ch == ' ' || ch == d {
|
||||
return d, typed
|
||||
}
|
||||
return ch, utf8.AppendRune(typed, d)
|
||||
}
|
||||
|
||||
// symType is a typed keysym's type, -1 for a Unicode one
|
||||
func symType(sym uint16) int {
|
||||
if sym < 0xf000 {
|
||||
return -1
|
||||
}
|
||||
return int(sym>>8) - 0xf0
|
||||
}
|
||||
|
||||
// shiftKey moves a modifier, which a second key of the same group holds down
|
||||
// until both are up; Caps Shift is Shift that ends Caps Lock
|
||||
func (k *linuxKeys) shiftKey(val byte, down, rep bool) {
|
||||
if rep || val >= nrShift {
|
||||
return
|
||||
}
|
||||
if val == kgCapsShift {
|
||||
val = kgShift
|
||||
if down {
|
||||
k.leds &^= ledCaps // the kernel ends Caps Lock itself, raw or not
|
||||
}
|
||||
}
|
||||
switch {
|
||||
case down && k.shiftDown[val] < 255:
|
||||
k.shiftDown[val]++
|
||||
case !down && k.shiftDown[val] > 0:
|
||||
k.shiftDown[val]--
|
||||
}
|
||||
if k.shiftDown[val] > 0 {
|
||||
k.shift |= 1 << val
|
||||
} else {
|
||||
k.shift &^= 1 << val
|
||||
}
|
||||
}
|
||||
|
||||
// computeShift counts the modifiers again from the keys down, by the plain
|
||||
// map, as the kernel does when a key finds no map
|
||||
func (k *linuxKeys) computeShift() {
|
||||
k.shift, k.shiftDown = 0, [nrShift]uint8{}
|
||||
plain := k.km.maps[0]
|
||||
if plain == nil {
|
||||
return
|
||||
}
|
||||
for code := range nrKeys {
|
||||
if !k.isDown(code) {
|
||||
continue
|
||||
}
|
||||
t, val := symType(plain[code]), byte(plain[code])
|
||||
if t != ktShift && t != ktSLock {
|
||||
continue
|
||||
}
|
||||
if val == kgCapsShift {
|
||||
val = kgShift
|
||||
}
|
||||
if val < nrShift {
|
||||
k.shiftDown[val]++
|
||||
k.shift |= 1 << val
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// spec runs a console function key (KT_SPEC) as the console does cooked.
|
||||
// The register and memory dumps, scrollback, Ctrl+Alt+Del, spawning a console
|
||||
// and the last console do nothing; SAK the kernel runs itself, raw or not.
|
||||
// Scroll Lock only ever restarts output, so a game can't be frozen.
|
||||
func (k *linuxKeys) spec(val byte, rep bool) ([]byte, consoleAct) {
|
||||
var act consoleAct
|
||||
switch val {
|
||||
case 0: // K_HOLE
|
||||
k.computeShift()
|
||||
case 1: // K_ENTER, after a dead key pending
|
||||
var typed []byte
|
||||
if k.diacr != 0 {
|
||||
typed, k.diacr = utf8.AppendRune(typed, k.diacr), 0
|
||||
}
|
||||
return append(typed, '\r'), act
|
||||
case 5: // K_BREAK, which a raw tty reads as NUL
|
||||
return []byte{0}, act
|
||||
case 7: // K_CAPS
|
||||
if !rep {
|
||||
k.leds ^= ledCaps
|
||||
act.leds = true
|
||||
}
|
||||
case 8, 19: // K_NUM, K_BARENUMLOCK
|
||||
if !rep {
|
||||
k.leds ^= ledNum
|
||||
act.leds = true
|
||||
}
|
||||
case 9: // K_HOLD
|
||||
act.start = !rep
|
||||
case 13: // K_CAPSON
|
||||
if !rep && k.leds&ledCaps == 0 {
|
||||
k.leds |= ledCaps
|
||||
act.leds = true
|
||||
}
|
||||
case 14: // K_COMPOSE
|
||||
k.deadNext = true
|
||||
case 16: // K_DECRCONSOLE
|
||||
act.vt = vtPrev
|
||||
case 17: // K_INCRCONSOLE
|
||||
act.vt = vtNext
|
||||
}
|
||||
return nil, act
|
||||
}
|
||||
|
||||
// padChars are what the keypad keys type with Num Lock on (K_P0 to K_PPARENR)
|
||||
const padChars = "0123456789+-*/\r,.?()"
|
||||
|
||||
// The function strings the keypad types with Num Lock off
|
||||
const (
|
||||
fnFind = 20
|
||||
fnInsert = 21
|
||||
fnRemove = 22
|
||||
fnSelect = 23
|
||||
fnPgUp = 24
|
||||
fnPgDn = 25
|
||||
)
|
||||
|
||||
// pad is a keypad key: its character with Num Lock on, else the navigation
|
||||
// key it doubles as
|
||||
func (k *linuxKeys) pad(val byte) []byte {
|
||||
if k.leds&ledNum == 0 {
|
||||
switch val {
|
||||
case 15, 16: // K_PCOMMA, K_PDOT
|
||||
return []byte(k.km.funcs[fnRemove])
|
||||
case 0:
|
||||
return []byte(k.km.funcs[fnInsert])
|
||||
case 1:
|
||||
return []byte(k.km.funcs[fnSelect])
|
||||
case 2:
|
||||
return k.cur(0)
|
||||
case 3:
|
||||
return []byte(k.km.funcs[fnPgDn])
|
||||
case 4:
|
||||
return k.cur(1)
|
||||
case 5:
|
||||
return []byte("\x1b[G")
|
||||
case 6:
|
||||
return k.cur(2)
|
||||
case 7:
|
||||
return []byte(k.km.funcs[fnFind])
|
||||
case 8:
|
||||
return k.cur(3)
|
||||
case 9:
|
||||
return []byte(k.km.funcs[fnPgUp])
|
||||
}
|
||||
}
|
||||
if int(val) < len(padChars) {
|
||||
return []byte{padChars[val]}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// cur is a cursor key (K_DOWN, K_LEFT, K_RIGHT, K_UP): CSI letter, or with
|
||||
// modifiers down on a kernel that says them, CSI 1 ; modifiers letter
|
||||
func (k *linuxKeys) cur(val byte) []byte {
|
||||
if val > 3 {
|
||||
return nil
|
||||
}
|
||||
ch := "BDCA"[val]
|
||||
if mod := k.csiMod(); mod > 1 && k.km.csiMods {
|
||||
return []byte{0x1b, '[', '1', ';', '0' + byte(mod), ch}
|
||||
}
|
||||
return []byte{0x1b, '[', ch}
|
||||
}
|
||||
|
||||
// csi is a KT_CSI key: CSI value ~, or CSI value ; modifiers ~
|
||||
func (k *linuxKeys) csi(val byte) []byte {
|
||||
if val > 99 {
|
||||
return nil
|
||||
}
|
||||
typed := strconv.AppendInt([]byte{0x1b, '['}, int64(val), 10)
|
||||
if mod := k.csiMod(); mod > 1 {
|
||||
typed = append(typed, ';', '0'+byte(mod))
|
||||
}
|
||||
return append(typed, '~')
|
||||
}
|
||||
|
||||
// csiMod is xterm's modifier parameter for the modifiers down: Shift, Alt and
|
||||
// Ctrl, the kernel leaving out their left and right groups and AltGr, which
|
||||
// keymaps use to pick a layout
|
||||
func (k *linuxKeys) csiMod() int {
|
||||
mod := 1
|
||||
if k.shift&(1<<kgShift) != 0 {
|
||||
mod++
|
||||
}
|
||||
if k.shift&(1<<kgAlt) != 0 {
|
||||
mod += 2
|
||||
}
|
||||
if k.shift&(1<<kgCtrl) != 0 {
|
||||
mod += 4
|
||||
}
|
||||
return mod
|
||||
}
|
||||
|
||||
// mediumRaw decodes the Linux console's K_MEDIUMRAW input: a keycode under
|
||||
// 128 is one byte, bit 7 set on release; a higher one is a byte of 0, 0x80 on
|
||||
// release, then its high and low 7 bits, each with bit 7 set
|
||||
type mediumRaw struct {
|
||||
up bool
|
||||
high int
|
||||
n int // bytes of a long keycode seen
|
||||
}
|
||||
|
||||
// decode reports each keycode event in data, keeping a long keycode begun at
|
||||
// its end for the next call
|
||||
func (m *mediumRaw) decode(data []byte, key func(code int, down bool)) {
|
||||
for _, b := range data {
|
||||
if m.n > 0 && b&0x80 != 0 {
|
||||
if m.n++; m.n == 2 {
|
||||
m.high = int(b & 0x7f)
|
||||
continue
|
||||
}
|
||||
m.n = 0
|
||||
key(m.high<<7|int(b&0x7f), !m.up)
|
||||
continue
|
||||
}
|
||||
m.n = 0 // a long keycode broken off is dropped
|
||||
if b&0x7f == 0 {
|
||||
m.up, m.n = b != 0, 1
|
||||
continue
|
||||
}
|
||||
key(int(b&0x7f), b&0x80 == 0)
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,301 @@
|
||||
package terminal
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"os"
|
||||
"slices"
|
||||
"strconv"
|
||||
"strings"
|
||||
"testing"
|
||||
)
|
||||
|
||||
// testKeymap is the kernel's built-in keymap (US), as KDGKBENT and KDGKBSENT
|
||||
// read it from a Linux 6.18 console
|
||||
func testKeymap(t *testing.T) *linuxKeymap {
|
||||
t.Helper()
|
||||
f, err := os.Open("testdata/linux-keymap.txt")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
defer f.Close()
|
||||
km := &linuxKeymap{escMeta: true}
|
||||
sc := bufio.NewScanner(f)
|
||||
sc.Buffer(nil, 1<<16)
|
||||
for sc.Scan() {
|
||||
kind, rest, _ := strings.Cut(sc.Text(), " ")
|
||||
n, rest, _ := strings.Cut(rest, " ")
|
||||
i, err := strconv.Atoi(n)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
switch kind {
|
||||
case "map":
|
||||
m := new([nrKeys]uint16)
|
||||
for j, v := range strings.Fields(rest) {
|
||||
x, err := strconv.ParseUint(v, 16, 16)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
m[j] = uint16(x) ^ 0xf000
|
||||
}
|
||||
km.maps[i] = m
|
||||
case "fn":
|
||||
if km.funcs[i], err = strconv.Unquote(rest); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
}
|
||||
return km
|
||||
}
|
||||
|
||||
// Linux input keycodes
|
||||
const (
|
||||
keyEsc = 1
|
||||
key1 = 2
|
||||
key2 = 3
|
||||
keyBackspace = 14
|
||||
keyTab = 15
|
||||
keyQ = 16
|
||||
keyO = 24
|
||||
keyEnter = 28
|
||||
keyLeftCtrl = 29
|
||||
keyA = 30
|
||||
keyS = 31
|
||||
keyGrave = 41
|
||||
keyLeftShift = 42
|
||||
keyB = 48
|
||||
keyN = 49
|
||||
keyRtShift = 54
|
||||
keyLeftAlt = 56
|
||||
keySpace = 57
|
||||
keyCapsLock = 58
|
||||
keyF1 = 59
|
||||
keyF2 = 60
|
||||
keyF6 = 64
|
||||
keyNumLock = 69
|
||||
keyScrollLk = 70
|
||||
keyKP8 = 72
|
||||
keyKP5 = 76
|
||||
keyKP0 = 82
|
||||
keyKPDot = 83
|
||||
keyKPEnter = 96
|
||||
keyRightAlt = 100
|
||||
keyHome = 102
|
||||
keyUp = 103
|
||||
keyPageUp = 104
|
||||
keyLeft = 105
|
||||
keyRight = 106
|
||||
keyDelete = 111
|
||||
keyPause = 119
|
||||
keyCompose = 127
|
||||
)
|
||||
|
||||
// stroke is a key going down (repeating when already down) or up
|
||||
type stroke struct {
|
||||
code int
|
||||
down bool
|
||||
}
|
||||
|
||||
func press(codes ...int) []stroke {
|
||||
var s []stroke
|
||||
for _, c := range codes {
|
||||
s = append(s, stroke{c, true}, stroke{c, false})
|
||||
}
|
||||
return s
|
||||
}
|
||||
|
||||
func hold(code int, inner ...[]stroke) []stroke {
|
||||
s := []stroke{{code, true}}
|
||||
for _, in := range inner {
|
||||
s = append(s, in...)
|
||||
}
|
||||
return append(s, stroke{code, false})
|
||||
}
|
||||
|
||||
// typedBy is what the console types for strokes, and what they ask of it
|
||||
func typedBy(k *linuxKeys, strokes []stroke) (string, []consoleAct) {
|
||||
var out []byte
|
||||
var acts []consoleAct
|
||||
for _, s := range strokes {
|
||||
typed, act := k.key(s.code, s.down, s.down && k.isDown(s.code))
|
||||
out = append(out, typed...)
|
||||
if act != (consoleAct{}) {
|
||||
acts = append(acts, act)
|
||||
}
|
||||
}
|
||||
return string(out), acts
|
||||
}
|
||||
|
||||
// Keys type what the Linux console types for them cooked, by its keymap and
|
||||
// the modifiers and locks they move: Shift into the character, Caps Lock on
|
||||
// letters only, Ctrl as control characters, Alt as an ESC prefix, the
|
||||
// function and editing keys as their strings, the keypad by Num Lock, and
|
||||
// cursor keys with their modifiers only on a kernel that says them
|
||||
func TestLinuxConsoleTypesAsCooked(t *testing.T) {
|
||||
cases := []struct {
|
||||
name string
|
||||
strokes []stroke
|
||||
want string // before kernel 7.1
|
||||
csiMods string // from 7.1, when it differs
|
||||
}{
|
||||
{"letter", press(keyA), "a", ""},
|
||||
{"shifted letter", hold(keyLeftShift, press(keyA)), "A", ""},
|
||||
{"shifted digit", hold(keyLeftShift, press(key1)), "!", ""},
|
||||
{"caps lock", slices.Concat(press(keyCapsLock), press(keyA, key1), press(keyCapsLock), press(keyA)), "A1a", ""},
|
||||
{"caps lock with shift", slices.Concat(press(keyCapsLock), hold(keyLeftShift, press(keyA))), "a", ""},
|
||||
{"ctrl letter", hold(keyLeftCtrl, press(keyA)), "\x01", ""},
|
||||
{"ctrl shift letter", hold(keyLeftCtrl, hold(keyLeftShift, press(keyA))), "\x01", ""},
|
||||
{"ctrl space", hold(keyLeftCtrl, press(keySpace)), "\x00", ""},
|
||||
{"ctrl backspace", hold(keyLeftCtrl, press(keyBackspace)), "\x08", ""},
|
||||
{"alt letter", hold(keyLeftAlt, press(keyA)), "\x1ba", ""},
|
||||
{"alt enter", hold(keyLeftAlt, press(keyEnter)), "\x1b\r", ""},
|
||||
{"ctrl alt letter", hold(keyLeftCtrl, hold(keyLeftAlt, press(keyA))), "\x1b\x01", ""},
|
||||
{"altgr", hold(keyRightAlt, press(key2)), "@", ""},
|
||||
{"enter tab escape backspace", press(keyEnter, keyTab, keyEsc, keyBackspace), "\r\t\x1b\x7f", ""},
|
||||
{"function keys", press(keyF1, keyF6), "\x1b[[A\x1b[17~", ""},
|
||||
{"shifted function key", hold(keyLeftShift, press(keyF1)), "\x1b[23~", ""},
|
||||
{"editing keys", press(keyHome, keyDelete, keyPageUp, keyPause), "\x1b[1~\x1b[3~\x1b[5~\x1b[P", ""},
|
||||
{"cursor", press(keyUp, keyLeft), "\x1b[A\x1b[D", ""},
|
||||
{"shifted cursor", hold(keyLeftShift, press(keyUp)), "\x1b[A", "\x1b[1;2A"},
|
||||
{"ctrl cursor", hold(keyLeftCtrl, press(keyRight)), "\x1b[C", "\x1b[1;5C"},
|
||||
{"alt shift cursor, no map", hold(keyLeftAlt, hold(keyLeftShift, press(keyUp))), "", "\x1b[1;4A"},
|
||||
{"keypad, num lock off", press(keyKP8, keyKP5, keyKP0, keyKPDot, keyKPEnter), "\x1b[A\x1b[G\x1b[2~\x1b[3~\r", ""},
|
||||
{"keypad, num lock on", slices.Concat(press(keyNumLock), press(keyKP8, keyKP0, keyKPDot)), "80.", ""},
|
||||
{"repeat", []stroke{{keyQ, true}, {keyQ, true}, {keyQ, true}, {keyQ, false}}, "qqq", ""},
|
||||
{"shift released first", []stroke{{keyLeftShift, true}, {keyA, true}, {keyLeftShift, false}, {keyA, true}, {keyA, false}}, "Aa", ""},
|
||||
{"two shifts", []stroke{{keyLeftShift, true}, {keyRtShift, true}, {keyLeftShift, false}, {keyA, true}, {keyA, false}, {keyRtShift, false}}, "A", ""},
|
||||
{"inert keys", slices.Concat(hold(keyLeftShift, press(keyPageUp)), hold(keyLeftCtrl, hold(keyLeftAlt, press(keyDelete)))), "", ""},
|
||||
}
|
||||
for _, csiMods := range []bool{false, true} {
|
||||
km := testKeymap(t)
|
||||
km.csiMods = csiMods
|
||||
for _, c := range cases {
|
||||
want := c.want
|
||||
if csiMods && c.csiMods != "" {
|
||||
want = c.csiMods
|
||||
}
|
||||
k := &linuxKeys{km: km}
|
||||
got, _ := typedBy(k, c.strokes)
|
||||
if got != want {
|
||||
t.Errorf("%s (csiMods %v): typed %q, want %q", c.name, csiMods, got, want)
|
||||
}
|
||||
if k.shift != 0 {
|
||||
t.Errorf("%s (csiMods %v): modifiers %#x left down", c.name, csiMods, k.shift)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Keys that switch consoles, the locks and Scroll Lock ask the console for
|
||||
// what the kernel would do cooked: the locks' flags, a console by number or
|
||||
// the one before or after, and output going on
|
||||
func TestLinuxConsoleKeysAskTheConsole(t *testing.T) {
|
||||
cases := []struct {
|
||||
name string
|
||||
strokes []stroke
|
||||
want []consoleAct
|
||||
leds uint8
|
||||
}{
|
||||
{"alt f2", hold(keyLeftAlt, press(keyF2)), []consoleAct{{vt: 2}}, 0},
|
||||
{"ctrl alt f1", hold(keyLeftCtrl, hold(keyLeftAlt, press(keyF1))), []consoleAct{{vt: 1}}, 0},
|
||||
{"altgr f1", hold(keyRightAlt, press(keyF1)), []consoleAct{{vt: 13}}, 0},
|
||||
{"alt left right", hold(keyLeftAlt, press(keyLeft, keyRight)), []consoleAct{{vt: vtPrev}, {vt: vtNext}}, 0},
|
||||
{"caps lock twice", press(keyCapsLock, keyCapsLock), []consoleAct{{leds: true}, {leds: true}}, 0},
|
||||
{"caps lock held", []stroke{{keyCapsLock, true}, {keyCapsLock, true}, {keyCapsLock, false}}, []consoleAct{{leds: true}}, ledCaps},
|
||||
{"num lock", press(keyNumLock), []consoleAct{{leds: true}}, ledNum},
|
||||
{"scroll lock", press(keyScrollLk), []consoleAct{{start: true}}, 0},
|
||||
}
|
||||
for _, c := range cases {
|
||||
k := &linuxKeys{km: testKeymap(t)}
|
||||
if _, got := typedBy(k, c.strokes); !slices.Equal(got, c.want) {
|
||||
t.Errorf("%s: asked %+v, want %+v", c.name, got, c.want)
|
||||
}
|
||||
if k.leds != c.leds {
|
||||
t.Errorf("%s: lock flags %#x, want %#x", c.name, k.leds, c.leds)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Translation starts from the console's state: modifiers already down and the
|
||||
// locks already on
|
||||
func TestLinuxConsoleSeedsFromTheConsole(t *testing.T) {
|
||||
k := &linuxKeys{km: testKeymap(t)}
|
||||
k.seed(1<<kgShift, ledNum)
|
||||
got, _ := typedBy(k, slices.Concat(press(keyA, keyKP8), []stroke{{keyLeftShift, false}}, press(keyA)))
|
||||
if got != "A8a" {
|
||||
t.Errorf("typed %q, want %q", got, "A8a")
|
||||
}
|
||||
}
|
||||
|
||||
// Sticky and locked modifiers, which some keymaps bind, hold for the next key
|
||||
// and until locked off; a key no map has types nothing
|
||||
func TestLinuxConsoleLocks(t *testing.T) {
|
||||
km := testKeymap(t)
|
||||
const keyShiftLock, keyStickyShift, keyNoMap = 85, 86, 89
|
||||
km.maps[0][keyShiftLock] = 0xf000 | ktLock<<8 | kgShift
|
||||
km.maps[1][keyShiftLock] = 0xf000 | ktLock<<8 | kgShift
|
||||
km.maps[0][keyStickyShift] = 0xf000 | ktSLock<<8 | kgShift
|
||||
km.maps[1][keyStickyShift] = 0xf000 | ktSLock<<8 | kgShift
|
||||
k := &linuxKeys{km: km}
|
||||
strokes := slices.Concat(press(keyShiftLock), press(keyA, keyA), press(keyShiftLock), press(keyStickyShift), press(keyA, keyA))
|
||||
if got, _ := typedBy(k, strokes); got != "AAAa" {
|
||||
t.Errorf("typed %q, want %q", got, "AAAa")
|
||||
}
|
||||
if got, _ := typedBy(k, hold(keyLeftAlt, hold(keyLeftShift, press(keyNoMap)))); got != "" {
|
||||
t.Errorf("a key with no map typed %q", got)
|
||||
}
|
||||
}
|
||||
|
||||
// Dead keys and compose type what the console's accent table makes of the
|
||||
// character after them, as cooked: their accented character, the dead key's
|
||||
// own for a space or itself, or the dead key's character and the next when
|
||||
// the table has no pair for them. A key typing no character leaves a dead key
|
||||
// pending, and Enter types it.
|
||||
func TestLinuxConsoleDeadKeys(t *testing.T) {
|
||||
km := testKeymap(t)
|
||||
km.maps[0][keyGrave] = 0xf000 | ktDead<<8 // dead grave, by number
|
||||
km.maps[1][keyGrave] = 0xf000 | ktDead2<<8 | '~' // dead tilde, by its character
|
||||
km.maps[0][keyCompose] = 0xf000 | ktSpec<<8 | 14 // K_COMPOSE
|
||||
km.accents = []linuxAccent{{'`', 'a', 'à'}, {'~', 'n', 'ñ'}, {'o', 'a', 'å'}, {'s', 's', 'ß'}}
|
||||
cases := []struct {
|
||||
name string
|
||||
strokes []stroke
|
||||
want string
|
||||
}{
|
||||
{"dead key", press(keyGrave, keyA), "à"},
|
||||
{"dead key by its character", slices.Concat(hold(keyLeftShift, press(keyGrave)), press(keyN)), "ñ"},
|
||||
{"dead key and space", press(keyGrave, keySpace), "`"},
|
||||
{"dead key twice", press(keyGrave, keyGrave, keyA), "à"},
|
||||
{"no pair", press(keyGrave, keyB), "`b"},
|
||||
{"dead key and enter", press(keyGrave, keyEnter), "`\r"},
|
||||
{"over a cursor key", press(keyGrave, keyUp, keyA), "\x1b[Aà"},
|
||||
{"compose", press(keyCompose, keyO, keyA), "å"},
|
||||
{"compose a pair", press(keyCompose, keyS, keyS), "ß"},
|
||||
{"compose and a dead key", press(keyCompose, keyGrave, keyA, keyB), "àb"},
|
||||
}
|
||||
for _, c := range cases {
|
||||
k := &linuxKeys{km: km}
|
||||
if got, _ := typedBy(k, c.strokes); got != c.want {
|
||||
t.Errorf("%s: typed %q, want %q", c.name, got, c.want)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// K_MEDIUMRAW input decodes to keycodes, a long one across reads, and a long
|
||||
// one broken off is dropped without the key after it
|
||||
func TestMediumRawDecodes(t *testing.T) {
|
||||
type ev struct {
|
||||
code int
|
||||
down bool
|
||||
}
|
||||
var got []ev
|
||||
var m mediumRaw
|
||||
key := func(code int, down bool) { got = append(got, ev{code, down}) }
|
||||
m.decode([]byte{30, 30 | 0x80, 0x00, 0x81}, key)
|
||||
m.decode([]byte{0x80 | 55, 0x80, 0x82, 0x80 | 3}, key)
|
||||
m.decode([]byte{0x00, 0x81, 28, 0x80 | 28}, key)
|
||||
want := []ev{{30, true}, {30, false}, {1<<7 | 55, true}, {2<<7 | 3, false}, {28, true}, {28, false}}
|
||||
if !slices.Equal(got, want) {
|
||||
t.Errorf("decoded %v, want %v", got, want)
|
||||
}
|
||||
}
|
||||
+93
-2
@@ -133,6 +133,7 @@ type termImpl struct {
|
||||
mouseMode MouseMode
|
||||
paste bool
|
||||
keyProto bool // the key protocol's flags are pushed
|
||||
consoleRaw bool // the console's keyboard is raw: mouse reports wait
|
||||
|
||||
// Output reaches the terminal on writeLoop's goroutine, so a terminal that
|
||||
// stops reading holds that goroutine rather than whoever draws. queued is what
|
||||
@@ -144,7 +145,8 @@ type termImpl struct {
|
||||
heldW int
|
||||
heldH int
|
||||
holding bool
|
||||
writeSince atomic.Int64 // unix nanoseconds the write out began; zero when none is
|
||||
writeSince atomic.Int64 // unix nanoseconds the write out began; zero when none is
|
||||
drained chan struct{} // a drain left nothing queued
|
||||
wake chan struct{}
|
||||
quit chan struct{}
|
||||
writerDone chan struct{}
|
||||
@@ -186,6 +188,7 @@ func newTerm(b Backend, c ColorMode) *termImpl {
|
||||
syntheticCh: make(chan Event, 16),
|
||||
resizeCh: make(chan ResizeEvent, 1),
|
||||
wake: make(chan struct{}, 1),
|
||||
drained: make(chan struct{}, 1),
|
||||
quit: make(chan struct{}),
|
||||
writerDone: make(chan struct{}),
|
||||
}
|
||||
@@ -212,6 +215,9 @@ func (t *termImpl) Init() error {
|
||||
t.input = newInputReader(t.backend)
|
||||
t.input.sources = backendKeySources(t.backend)
|
||||
t.input.write = t.keyWrite
|
||||
if t.input.console = backendConsole(t.backend); t.input.console != nil {
|
||||
t.input.keysRaw, t.input.keysCooked = t.keysRaw, t.keysCooked
|
||||
}
|
||||
|
||||
// Set resize handler on backend
|
||||
t.backend.SetResizeHandler(func(w, h int) {
|
||||
@@ -519,7 +525,17 @@ func (t *termImpl) SetMouseMode(mode MouseMode) error {
|
||||
if !t.initialized || t.finalized {
|
||||
return nil
|
||||
}
|
||||
if t.consoleRaw {
|
||||
t.mouseMode = mode // reported once the console's keyboard is cooked again
|
||||
return nil
|
||||
}
|
||||
t.setMouseModeLocked(mode)
|
||||
return nil
|
||||
}
|
||||
|
||||
// setMouseModeLocked writes what moves the terminal's mouse reporting to mode.
|
||||
// Caller MUST hold mu.
|
||||
func (t *termImpl) setMouseModeLocked(mode MouseMode) {
|
||||
oldMode := t.mouseMode
|
||||
t.mouseMode = mode
|
||||
|
||||
@@ -576,7 +592,6 @@ func (t *termImpl) SetMouseMode(mode MouseMode) error {
|
||||
}
|
||||
|
||||
t.sendLocked()
|
||||
return nil
|
||||
}
|
||||
|
||||
// SetPasteMode turns bracketed paste on or off
|
||||
@@ -624,6 +639,79 @@ func (t *termImpl) keyWrite(seq []byte, pushed bool) bool {
|
||||
return true
|
||||
}
|
||||
|
||||
// consoleDrainTimeout bounds how long switching a console's keyboard raw waits
|
||||
// for the console to take what is queued, its mouse reports off among it
|
||||
const consoleDrainTimeout = 500 * time.Millisecond
|
||||
|
||||
// keysRaw switches the console's keyboard raw for the input reader: false
|
||||
// when it stays cooked, and whether it may not for a later ask. The console
|
||||
// types its mouse reports into the input the keycodes come through, so they
|
||||
// are off while it is raw, the console having taken that before the switch,
|
||||
// which drops reports already sent.
|
||||
func (t *termImpl) keysRaw() (ok, again bool) {
|
||||
c := t.input.console
|
||||
if !c.prepare() {
|
||||
return false, false
|
||||
}
|
||||
t.mu.Lock()
|
||||
defer t.mu.Unlock()
|
||||
if !t.initialized || t.finalized {
|
||||
return false, false
|
||||
}
|
||||
mode := t.mouseMode
|
||||
if mode != MouseModeNone {
|
||||
t.setMouseModeLocked(MouseModeNone)
|
||||
t.mouseMode = mode
|
||||
}
|
||||
t.consoleRaw = true
|
||||
if t.idleLocked(consoleDrainTimeout) && !t.finalized && c.raw() {
|
||||
return true, false
|
||||
}
|
||||
t.mouseBackLocked()
|
||||
return false, !t.finalized
|
||||
}
|
||||
|
||||
// keysCooked switches the console's keyboard back for the input reader, and
|
||||
// mouse reports on again
|
||||
func (t *termImpl) keysCooked() {
|
||||
t.input.console.cooked()
|
||||
t.mu.Lock()
|
||||
defer t.mu.Unlock()
|
||||
if t.initialized {
|
||||
t.mouseBackLocked()
|
||||
}
|
||||
}
|
||||
|
||||
// mouseBackLocked ends the hold on mouse reports the console's keyboard put
|
||||
// while raw, reporting as asked. Caller MUST hold mu.
|
||||
func (t *termImpl) mouseBackLocked() {
|
||||
t.consoleRaw = false
|
||||
if mode := t.mouseMode; mode != MouseModeNone && !t.finalized {
|
||||
t.mouseMode = MouseModeNone
|
||||
t.setMouseModeLocked(mode)
|
||||
}
|
||||
}
|
||||
|
||||
// idleLocked waits, mu released meanwhile, until the terminal has taken all
|
||||
// that is queued, or for timeout; it returns with mu held, and whether the
|
||||
// queue emptied. Caller MUST hold mu.
|
||||
func (t *termImpl) idleLocked(timeout time.Duration) bool {
|
||||
deadline := time.Now().Add(timeout)
|
||||
for len(t.queued) > 0 || t.writeSince.Load() != 0 {
|
||||
left := time.Until(deadline)
|
||||
if left <= 0 || t.finalized {
|
||||
return false
|
||||
}
|
||||
t.mu.Unlock()
|
||||
select {
|
||||
case <-t.drained:
|
||||
case <-time.After(left):
|
||||
}
|
||||
t.mu.Lock()
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// SetKeyReport hands the ask to the input reader, which answers it
|
||||
func (t *termImpl) SetKeyReport(report KeyReport, allow KeySource) error {
|
||||
if report > KeyReportReleases {
|
||||
@@ -642,6 +730,9 @@ func (t *termImpl) SetKeyReport(report KeyReport, allow KeySource) error {
|
||||
// Call this from panic recovery if Fini() cannot be called normally. Given a
|
||||
// redirected stdout, it writes to the controlling terminal instead.
|
||||
func EmergencyReset(w io.Writer) {
|
||||
// A console keyboard left raw types nothing a player can use
|
||||
restoreConsoleKeys()
|
||||
|
||||
if f, ok := w.(*os.File); ok && !term.IsTerminal(int(f.Fd())) {
|
||||
if tty := controllingTTY(); tty != nil {
|
||||
defer tty.Close()
|
||||
|
||||
Vendored
+116
@@ -0,0 +1,116 @@
|
||||
key 0 0 0 0 0 0 0 0 0 ff 0
|
||||
key 1 1b 1b 1b 1b 1b 1b 86 1b 2 0
|
||||
key 2 31 21 0 0 31 21 0 0 33 0
|
||||
key 3 32 40 0 0 32 40 0 0 0 0
|
||||
key 4 33 23 0 0 33 23 0 0 33 0
|
||||
key 5 34 24 0 0 34 24 0 0 33 0
|
||||
key 6 35 25 0 0 35 25 0 0 33 0
|
||||
key 7 36 5e 1e 1e 36 5e 1e 1e 0 0
|
||||
key 8 37 26 0 0 37 26 0 0 33 0
|
||||
key 9 38 2a 0 0 38 2a 0 0 33 0
|
||||
key 10 39 28 0 0 39 28 0 0 33 0
|
||||
key 11 30 29 0 0 30 29 0 0 33 0
|
||||
key 12 2d 5f 1f 1f 2d 5f 1f 1f 0 0
|
||||
key 13 3d 2b 0 0 3d 2b 0 0 33 0
|
||||
key 14 8 8 7f 7f 8 8 7f 7f 0 0
|
||||
key 15 9 8 0 0 9 8 0 0 77 0
|
||||
key 16 71 51 11 11 71 51 11 11 0 1
|
||||
key 17 77 57 17 17 77 57 17 17 0 1
|
||||
key 18 65 45 5 5 65 45 5 5 0 1
|
||||
key 19 72 52 12 12 72 52 12 12 0 1
|
||||
key 20 74 54 14 14 74 54 14 14 0 1
|
||||
key 21 79 59 19 19 79 59 19 19 0 1
|
||||
key 22 75 55 15 15 75 55 15 15 0 1
|
||||
key 23 69 49 9 9 69 49 9 9 0 1
|
||||
key 24 6f 4f f f 6f 4f f f 0 1
|
||||
key 25 70 50 10 10 70 50 10 10 0 1
|
||||
key 26 5b 7b 1b 1b 5b 7b 1b 1b 0 0
|
||||
key 27 5d 7d 1d 1d 5d 7d 1d 1d 0 0
|
||||
key 28 d d a a d d a a 0 0
|
||||
key 29 9 9 9 9 9 9 9 9 ff 0
|
||||
key 30 61 41 1 1 61 41 1 1 0 1
|
||||
key 31 73 53 13 13 73 53 13 13 0 1
|
||||
key 32 64 44 4 4 64 44 4 4 0 1
|
||||
key 33 66 46 6 6 66 46 6 6 0 1
|
||||
key 34 67 47 7 7 67 47 7 7 0 1
|
||||
key 35 68 48 8 8 68 48 8 8 0 1
|
||||
key 36 6a 4a a a 6a 4a a a 0 1
|
||||
key 37 6b 4b b b 6b 4b b b 0 1
|
||||
key 38 6c 4c c c 6c 4c c c 0 1
|
||||
key 39 3b 3a 0 0 3b 3a 0 0 33 0
|
||||
key 40 27 22 0 0 27 22 0 0 33 0
|
||||
key 41 60 7e 0 0 60 7e 0 0 33 0
|
||||
key 42 2 2 2 2 2 2 2 2 ff 0
|
||||
key 43 5c 7c 1c 1c 5c 7c 1c 1c 0 0
|
||||
key 44 7a 5a 1a 1a 7a 5a 1a 1a 0 1
|
||||
key 45 78 58 18 18 78 58 18 18 0 1
|
||||
key 46 63 43 3 3 63 43 3 3 0 1
|
||||
key 47 76 56 16 16 76 56 16 16 0 1
|
||||
key 48 62 42 2 2 62 42 2 2 0 1
|
||||
key 49 6e 4e e e 6e 4e e e 0 1
|
||||
key 50 6d 4d d d 6d 4d d d 0 1
|
||||
key 51 2c 3c 0 0 2c 3c 0 0 33 0
|
||||
key 52 2e 3e 0 0 2e 3e 0 0 33 0
|
||||
key 53 2f 3f 0 0 2f 3f 0 0 33 0
|
||||
key 54 3 3 3 3 3 3 3 3 ff 0
|
||||
key 55 2a 2a 2a 2a 2a 2a 2a 2a 0 0
|
||||
key 56 7 7 7 7 7 7 7 7 ff 0
|
||||
key 57 20 20 0 20 20 20 87 20 2 0
|
||||
key 58 4 4 4 4 4 4 4 4 ff 0
|
||||
key 59 1b 27 33 3f b 15 b 15 ff 0
|
||||
key 60 1c 28 34 40 c 16 c 16 ff 0
|
||||
key 61 1d 29 35 41 d 17 d 17 ff 0
|
||||
key 62 1e 2a 36 42 e 18 e 18 ff 0
|
||||
key 63 1f 2b 37 43 f 19 f 19 ff 0
|
||||
key 64 20 2c 38 44 10 1a 10 1a ff 0
|
||||
key 65 21 2d 39 45 11 11 11 11 ff 0
|
||||
key 66 22 2e 3a 46 12 12 12 12 ff 0
|
||||
key 67 23 2f 3b 47 13 13 13 13 ff 0
|
||||
key 68 24 30 3c 48 14 14 14 14 ff 0
|
||||
key 69 5 5 5 5 5 5 5 5 ff 0
|
||||
key 70 6 6 6 6 6 6 6 6 ff 0
|
||||
key 71 4b 37 37 37 37 37 37 37 80 2
|
||||
key 72 4c 38 38 38 38 38 38 38 80 2
|
||||
key 73 4d 39 39 39 39 39 39 39 80 2
|
||||
key 74 4e 2d 2d 2d 2d 2d 2d 2d 80 2
|
||||
key 75 4f 34 34 34 34 34 34 34 80 2
|
||||
key 76 50 35 35 35 35 35 35 35 80 2
|
||||
key 77 51 36 36 36 36 36 36 36 80 2
|
||||
key 78 52 2b 2b 2b 2b 2b 2b 2b 80 2
|
||||
key 79 53 31 31 31 31 31 31 31 80 2
|
||||
key 80 54 32 32 32 32 32 32 32 80 2
|
||||
key 81 55 33 33 33 33 33 33 33 80 2
|
||||
key 82 56 30 30 30 30 30 30 30 80 2
|
||||
key 83 7f 2e 2e 2e 2e 2e 85 85 3 2
|
||||
key 84 0 0 0 0 0 0 0 0 ff 0
|
||||
key 85 0 0 0 0 0 0 0 0 ff 0
|
||||
key 86 0 0 0 0 0 0 0 0 ff 0
|
||||
key 87 25 31 3d 49 15 15 15 15 ff 0
|
||||
key 88 26 32 3e 4a 16 16 16 16 ff 0
|
||||
key 89 d d a a d d a a 0 0
|
||||
key 90 80 80 80 80 80 80 80 80 ff 0
|
||||
key 91 2f 2f 2f 2f 2f 2f 2f 2f 0 2
|
||||
key 92 a 99 86 86 0 0 0 0 ff 0
|
||||
key 93 81 81 81 81 81 81 81 81 ff 0
|
||||
key 94 4b 4b 4b 4b 4b 4b 4b 4b ff 0
|
||||
key 95 4c 4c 4c 4c 4c 4c 4c 4c ff 0
|
||||
key 96 4d 4d 4d 4d 4d 4d 4d 4d ff 0
|
||||
key 97 4f 4f 4f 4f 4f 4f 4f 4f ff 0
|
||||
key 98 51 51 51 51 51 51 51 51 ff 0
|
||||
key 99 53 53 53 53 53 53 53 53 ff 0
|
||||
key 100 54 54 54 54 54 54 54 54 ff 0
|
||||
key 101 55 55 55 55 55 55 55 55 ff 0
|
||||
key 102 56 a3 56 56 56 56 56 56 ff 0
|
||||
key 103 57 57 57 57 57 57 85 57 ff 0
|
||||
key 104 6 88 6 88 87 0 87 0 ff 0
|
||||
key 105 58 58 58 58 58 58 58 58 ff 0
|
||||
key 106 59 59 59 59 59 59 59 59 ff 0
|
||||
key 107 5a 5a 5a 5a 5a 5a 5a 5a ff 0
|
||||
key 108 0 0 0 0 0 0 0 0 ff 0
|
||||
acc 0 60 61:e0 41:c0 65:e8 45:c8 69:ec 49:cc 6f:f2 4f:d2 75:f9 55:d9
|
||||
acc 1 b4 61:e1 41:c1 65:e9 45:c9 69:ed 49:cd 6f:f3 4f:d3 75:fa 55:da 79:fd 59:dd
|
||||
acc 2 5e 61:e2 41:c2 65:ea 45:ca 69:ee 49:ce 6f:f4 4f:d4 75:fb 55:db
|
||||
acc 3 7e 61:e3 41:c3 6e:f1 4e:d1 6f:f5 4f:d5
|
||||
acc 7 a8 61:e4 41:c4 65:eb 45:cb 69:ef 49:cf 6f:f6 4f:d6 75:fc 55:dc 79:ff
|
||||
acc 9 b0 61:e5 41:c5
|
||||
acc 10 b8 63:e7 43:c7
|
||||
Vendored
+35
@@ -0,0 +1,35 @@
|
||||
map 0 0200 001b 0031 0032 0033 0034 0035 0036 0037 0038 0039 0030 002d 003d 007f 0009 0b71 0b77 0b65 0b72 0b74 0b79 0b75 0b69 0b6f 0b70 005b 005d 0201 0702 0b61 0b73 0b64 0b66 0b67 0b68 0b6a 0b6b 0b6c 003b 0027 0060 0700 005c 0b7a 0b78 0b63 0b76 0b62 0b6e 0b6d 002c 002e 002f 0700 030c 0703 0020 0207 0100 0101 0102 0103 0104 0105 0106 0107 0108 0109 0208 0209 0307 0308 0309 030b 0304 0305 0306 030a 0301 0302 0303 0300 0310 0206 0200 003c 010a 010b 0200 0200 0200 0200 0200 0200 0200 030e 0702 030d 001c 0701 0205 0114 0603 0118 0601 0602 0117 0600 0119 0115 0116 011a 010c 010d 011b 011c 0110 0311 011d 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200
|
||||
map 1 0200 001b 0021 0040 0023 0024 0025 005e 0026 002a 0028 0029 005f 002b 007f 0009 0b51 0b57 0b45 0b52 0b54 0b59 0b55 0b49 0b4f 0b50 007b 007d 0201 0702 0b41 0b53 0b44 0b46 0b47 0b48 0b4a 0b4b 0b4c 003a 0022 007e 0700 007c 0b5a 0b58 0b43 0b56 0b42 0b4e 0b4d 003c 003e 003f 0700 030c 0703 0020 0207 010a 010b 010c 010d 010e 010f 0110 0111 0112 0113 0213 0203 0307 0308 0309 030b 0304 0305 0306 030a 0301 0302 0303 0300 0310 0206 0200 003e 010a 010b 0200 0200 0200 0200 0200 0200 0200 030e 0702 030d 0200 0701 0205 0114 0603 020b 0601 0602 0117 0600 020a 0115 0116 011a 010c 010d 011b 011c 0110 0311 011d 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200
|
||||
map 2 0200 0200 0200 0040 0200 0024 0200 0200 007b 005b 005d 007d 005c 0200 0200 0200 0b71 0b77 0918 0b72 0b74 0b79 0b75 0b69 0b6f 0b70 0200 007e 0201 0702 0914 0b73 0917 0919 0b67 0b68 0b6a 0b6b 0b6c 0200 0200 0200 0700 0200 0b7a 0b78 0916 0b76 0915 0b6e 0b6d 0200 0200 0200 0700 030c 0703 0200 0207 050c 050d 050e 050f 0510 0511 0512 0513 0514 0515 0208 0202 0911 0912 0913 030b 090e 090f 0910 030a 090b 090c 090d 090a 0310 0206 0200 007c 0516 0517 0200 0200 0200 0200 0200 0200 0200 030e 0702 030d 0200 0701 0205 0114 0603 0118 0601 0602 0117 0600 0119 0115 0116 011a 010c 010d 011b 011c 0110 0311 011d 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200
|
||||
map 4 0200 0200 0200 0000 001b 001c 001d 001e 001f 007f 0200 0200 001f 0200 0008 0200 0011 0017 0005 0012 0014 0019 0015 0009 000f 0010 001b 001d 0201 0702 0001 0013 0004 0006 0007 0008 000a 000b 000c 0200 0007 0000 0700 001c 001a 0018 0003 0016 0002 000e 000d 0200 020e 007f 0700 030c 0703 0000 0207 0100 0101 0102 0103 0104 0105 0106 0107 0108 0109 0208 0204 0307 0308 0309 030b 0304 0305 0306 030a 0301 0302 0303 0300 0310 0206 0200 0200 010a 010b 0200 0200 0200 0200 0200 0200 0200 030e 0702 030d 001c 0701 0205 0114 0603 0118 0601 0602 0117 0600 0119 0115 0116 011a 010c 010d 011b 011c 0110 0311 011d 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200
|
||||
map 5 0200 0200 0200 0000 0200 0200 0200 0200 0200 0200 0200 0200 001f 0200 0200 0200 0011 0017 0005 0012 0014 0019 0015 0009 000f 0010 0200 0200 0201 0702 0001 0013 0004 0006 0007 0008 000a 000b 000c 0200 0200 0200 0700 0200 001a 0018 0003 0016 0002 000e 000d 0200 0200 0200 0700 030c 0703 0200 0207 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0208 0200 0307 0308 0309 030b 0304 0305 0306 030a 0301 0302 0303 0300 0310 0206 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 030e 0702 030d 0200 0701 0205 0114 0603 0118 0601 0602 0117 0600 0119 0115 0116 011a 010c 010d 011b 011c 0110 0311 011d 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200
|
||||
map 8 0200 081b 0831 0832 0833 0834 0835 0836 0837 0838 0839 0830 082d 083d 087f 0809 0871 0877 0865 0872 0874 0879 0875 0869 086f 0870 085b 085d 080d 0702 0861 0873 0864 0866 0867 0868 086a 086b 086c 083b 0827 0860 0700 085c 087a 0878 0863 0876 0862 086e 086d 082c 082e 082f 0700 030c 0703 0820 0207 0500 0501 0502 0503 0504 0505 0506 0507 0508 0509 0208 0209 0907 0908 0909 030b 0904 0905 0906 030a 0901 0902 0903 0900 0310 0206 0200 083c 050a 050b 0200 0200 0200 0200 0200 0200 0200 030e 0702 030d 001c 0701 0205 0114 0603 0118 0210 0211 0117 0600 0119 0115 0116 011a 010c 010d 011b 011c 0110 0311 011d 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200
|
||||
map 12 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0811 0817 0805 0812 0814 0819 0815 0809 080f 0810 0200 0200 0201 0702 0801 0813 0804 0806 0807 0808 080a 080b 080c 0200 0200 0200 0700 0200 081a 0818 0803 0816 0802 080e 080d 0200 0200 0200 0700 030c 0703 0200 0207 0500 0501 0502 0503 0504 0505 0506 0507 0508 0509 0208 0200 0307 0308 0309 030b 0304 0305 0306 030a 0301 0302 0303 0300 020c 0206 0200 0200 050a 050b 0200 0200 0200 0200 0200 0200 0200 030e 0702 030d 0200 0701 0205 0114 0603 0118 0601 0602 0117 0600 0119 0115 020c 011a 010c 010d 011b 011c 0110 0311 011d 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200 0200
|
||||
fn 0 "\x1b[[A"
|
||||
fn 1 "\x1b[[B"
|
||||
fn 2 "\x1b[[C"
|
||||
fn 3 "\x1b[[D"
|
||||
fn 4 "\x1b[[E"
|
||||
fn 5 "\x1b[17~"
|
||||
fn 6 "\x1b[18~"
|
||||
fn 7 "\x1b[19~"
|
||||
fn 8 "\x1b[20~"
|
||||
fn 9 "\x1b[21~"
|
||||
fn 10 "\x1b[23~"
|
||||
fn 11 "\x1b[24~"
|
||||
fn 12 "\x1b[25~"
|
||||
fn 13 "\x1b[26~"
|
||||
fn 14 "\x1b[28~"
|
||||
fn 15 "\x1b[29~"
|
||||
fn 16 "\x1b[31~"
|
||||
fn 17 "\x1b[32~"
|
||||
fn 18 "\x1b[33~"
|
||||
fn 19 "\x1b[34~"
|
||||
fn 20 "\x1b[1~"
|
||||
fn 21 "\x1b[2~"
|
||||
fn 22 "\x1b[3~"
|
||||
fn 23 "\x1b[4~"
|
||||
fn 24 "\x1b[5~"
|
||||
fn 25 "\x1b[6~"
|
||||
fn 26 "\x1b[M"
|
||||
fn 29 "\x1b[P"
|
||||
Reference in new issue
Block a user