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Code to query terminal for capabilities

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This commit is contained in:
Kovid Goyal
2025-01-03 21:30:05 +05:30
parent e1f60fa71a
commit fc463aaba5
4 changed files with 113 additions and 2 deletions
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36
tools/tui/loop/run.go
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@@ -124,6 +124,25 @@ func (self *Loop) handle_csi(raw []byte) (err error) {
return self.handle_mouse_event(me)
}
}
if self.waiting_for_capabilities_response {
if strings.HasPrefix(csi, "?") && strings.HasSuffix(csi, "c") {
self.waiting_for_capabilities_response = false
if self.OnCapabilitiesReceived != nil {
self.OnCapabilitiesReceived(self.TerminalCapabilities)
}
} else if strings.HasPrefix(csi, "?997;") && strings.HasSuffix(csi, "n") {
switch csi[len(csi)-2] {
case '1':
self.TerminalCapabilities.ColorPreference = DARK_COLOR_PREFERENCE
case '2':
self.TerminalCapabilities.ColorPreference = LIGHT_COLOR_PREFERENCE
}
self.TerminalCapabilities.ColorPreferenceResponseReceived = true
} else if strings.HasPrefix(csi, "?") && strings.HasSuffix(csi, "u") {
self.TerminalCapabilities.KeyboardProtocol = true
self.TerminalCapabilities.KeyboardProtocolResponseReceived = true
}
}
if self.OnEscapeCode != nil {
return self.OnEscapeCode(CSI, raw)
}
@@ -368,6 +387,7 @@ func (self *Loop) run() (err error) {
var r_r, r_w, w_r, w_w *os.File
var tty_reading_done_channel chan byte
var tty_read_channel chan []byte
var tty_leftover_read_channel chan []byte
start_tty_reader := func() (err error) {
r_r, r_w, err = os.Pipe()
@@ -376,7 +396,8 @@ func (self *Loop) run() (err error) {
}
tty_read_channel = make(chan []byte)
tty_reading_done_channel = make(chan byte)
go read_from_tty(r_r, controlling_term, tty_read_channel, err_channel, tty_reading_done_channel)
tty_leftover_read_channel = make(chan []byte, 1)
go read_from_tty(r_r, controlling_term, tty_read_channel, err_channel, tty_reading_done_channel, tty_leftover_read_channel)
return
}
err = start_tty_reader()
@@ -404,6 +425,19 @@ func (self *Loop) run() (err error) {
// wait for tty reader to exit cleanly
for range tty_read_channel {
}
if !self.waiting_for_capabilities_response {
close(tty_leftover_read_channel)
return
}
var pending_bytes []byte
select {
case msg, ok := <-tty_leftover_read_channel:
if ok {
pending_bytes = msg
}
default:
}
read_until_primary_device_attributes_response(controlling_term, pending_bytes, 2*time.Second)
}
defer func() {