sl_console/event.rs
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//! Mouse and key events.
use std::io::{Error, ErrorKind};
use std::{io, str};
/// An event reported by the terminal.
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub enum Event {
/// A key press.
Key(Key),
/// A mouse button press, release or wheel use at specific coordinates.
Mouse(MouseEvent),
/// An event that cannot currently be evaluated.
Unsupported(Vec<u8>),
}
/// A mouse related event.
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
pub enum MouseEvent {
/// A mouse button was pressed.
///
/// The coordinates are one-based.
Press(MouseButton, u16, u16),
/// A mouse button was released.
///
/// The coordinates are one-based.
Release(u16, u16),
/// A mouse button is held over the given coordinates.
///
/// The coordinates are one-based.
Hold(u16, u16),
}
/// A mouse button.
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
pub enum MouseButton {
/// The left mouse button.
Left,
/// The right mouse button.
Right,
/// The middle mouse button.
Middle,
/// Mouse wheel is going up.
///
/// This event is typically only used with Mouse::Press.
WheelUp,
/// Mouse wheel is going down.
///
/// This event is typically only used with Mouse::Press.
WheelDown,
}
#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
/// Struct representing a Key composed of a KeyCode and KeyMod
/// Note that certain KeyCode + KeyMod combinations are not
/// supported:
/// - KeyMod::AltCtrlShift and KeyCode::Char(<any>), e.g. KeyCode::Char('h')
/// will report Key { code: Char('h), mods: KeyMod::CtrlAlt despite the
/// shift key being pressed due to limitations in the terminal API
/// - KeyMod::AltCtrl and KeyCode::Char(0..=9) are not supported.
/// - KeyMod::CtrlShift and KeyCode::Char(0..=9) are not supported
/// - Any modifier keys and Backspace/Tab are not supported, save
/// KeyMod::Shift and KeyCode::Tab which is KeyCode::BackTab
/// - Shift+Insert is not supported
/// - Some terminals do not support modifier keys and certain
/// non alpha-numeric keys
pub struct Key {
/// any key that could be pressed
pub code: KeyCode,
/// any key modifier ctrl + alt + shift (excluding capital letters w/ shift) that could be
/// pressed.
pub mods: Option<KeyMod>,
}
impl Key {
/// Creates a new Key with no KeyMod
///
/// Returns Key
pub fn new(key: KeyCode) -> Self {
Self {
code: key,
mods: None,
}
}
/// Creates a new Key with provided KeyMod
///
/// Returns Key
pub fn new_mod(key: KeyCode, mods: KeyMod) -> Self {
Self {
code: key,
mods: Some(mods),
}
}
}
/// A key.
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
#[non_exhaustive]
pub enum KeyCode {
/// Backspace.
Backspace,
/// Left arrow.
Left,
/// Right arrow.
Right,
/// Up arrow.
Up,
/// Down arrow.
Down,
/// Home key.
Home,
/// End key.
End,
/// Page Up key.
PageUp,
/// Page Down key.
PageDown,
/// Backward Tab key.
BackTab,
/// Delete key.
Delete,
/// Insert key.
Insert,
/// Function keys.
///
/// Only function keys 1 through 12 are supported.
F(u8),
/// Normal character.
Char(char),
/// Null byte.
Null,
/// Esc key.
Esc,
}
/// Key combinations for keys besides Alt(char) and Ctrl(char) in
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
pub enum KeyMod {
/// Alt modifier key
Alt,
/// Ctrl modifier key
/// Note that certain keys may not be modifiable with `ctrl`, due to limitations of terminals.
Ctrl,
/// Shift modifier key
/// Note that capital letters do not note the `shift` modifier.
Shift,
/// Alt + Ctrl
AltCtrl,
/// Alt + Shift
AltShift,
/// Ctrl + Shift
CtrlShift,
/// Alt + Ctrl + Shift
AltCtrlShift,
}
/// Parse an Event from `item` and possibly subsequent bytes through `iter`.
pub fn parse_event<I>(item: u8, iter: &mut I) -> io::Result<Event>
where
I: Iterator<Item = io::Result<u8>>,
{
fn inner_parse_event<I>(item: u8, iter: &mut I) -> io::Result<Event>
where
I: Iterator<Item = io::Result<u8>>,
{
match item {
b'\x9B' => {
// proposed CSI extension mentioned at bottom of page:
// http://www.leonerd.org.uk/hacks/fixterms/
parse_csi(iter)
}
b'\x1B' => {
// This is an escape character, leading a control sequence.
Ok(match iter.next() {
Some(Ok(b'O')) => {
match iter.next() {
// F1-F4
Some(Ok(val @ b'P'..=b'S')) => {
Event::Key(Key::new(KeyCode::F(1 + val - b'P')))
}
Some(Ok(b'5')) => match iter.next() {
Some(Ok(val @ b'P'..=b'S')) => Event::Key(Key::new_mod(
KeyCode::F(1 + val - b'P'),
KeyMod::Ctrl,
)),
_ => {
return Err(Error::new(
ErrorKind::Other,
"Unknown escape code after ESC O 5",
))
}
},
_ => {
return Err(Error::new(
ErrorKind::Other,
"Unknown escape code after ESC O",
))
}
}
}
Some(Ok(b'[')) => {
// This is a CSI sequence.
parse_csi(iter)?
}
Some(Ok(c)) => {
let ch = parse_utf8_char(c, iter)?;
match c {
b'\x01'..=b'\x1A' => Event::Key(Key::new_mod(
KeyCode::Char((ch as u8 - 0x1 + b'a') as char),
KeyMod::AltCtrl,
)),
_ => {
Event::Key(Key::new_mod(parse_libtickit_key_codes(c), KeyMod::Alt))
}
}
}
Some(Err(_)) | None => {
return Err(Error::new(ErrorKind::Other, "Could not parse an event"))
}
})
}
b'\n' | b'\r' => Ok(Event::Key(Key::new(KeyCode::Char('\n')))),
b'\t' => Ok(Event::Key(Key::new(KeyCode::Char('\t')))),
b'\x7F' => Ok(Event::Key(Key::new(KeyCode::Backspace))),
c @ b'\x01'..=b'\x1A' => Ok(Event::Key(Key::new_mod(
KeyCode::Char((c as u8 - 0x1 + b'a') as char),
KeyMod::Ctrl,
))),
c @ b'\x1C'..=b'\x1F' => Ok(Event::Key(Key::new_mod(
KeyCode::Char((c as u8 - 0x1C + b'4') as char),
KeyMod::Ctrl,
))),
b'\0' => Ok(Event::Key(Key::new(KeyCode::Null))),
c => Ok({
let ch = parse_utf8_char(c, iter)?;
Event::Key(Key::new(KeyCode::Char(ch)))
}),
}
}
let mut control_seq = vec![item];
let result = {
let mut iter = iter.inspect(|k| {
if let Ok(k) = k {
control_seq.push(*k);
}
});
inner_parse_event(item, &mut iter)
};
match result {
Ok(event) => Ok(event),
Err(error) => {
log::error!("Failed to parse event: {}", error);
Ok(Event::Unsupported(control_seq))
}
}
}
fn next_char<I, T>(iter: &mut I) -> Option<T>
where
I: Iterator<Item = Result<T, Error>>,
T: Copy,
{
if let Some(Ok(next)) = iter.next() {
return Some(next);
}
None
}
/// Reference for parse_special_key_code, parse_other_special_key_code, and parse_key_mods
/// https://invisible-island.net/xterm/ctlseqs/ctlseqs.html
fn parse_special_key_code(code: u8) -> Option<KeyCode> {
let code = match code {
1 | 7 => KeyCode::Home,
2 => KeyCode::Insert,
3 => KeyCode::Delete,
4 | 8 => KeyCode::End,
5 => KeyCode::PageUp,
6 => KeyCode::PageDown,
v @ 11..=15 => KeyCode::F(v - 10),
v @ 17..=21 => KeyCode::F(v - 11),
v @ 23..=24 => KeyCode::F(v - 12),
_ => return None,
};
Some(code)
}
fn parse_other_special_key_code(code: u8) -> Option<KeyCode> {
let code = match code {
b'D' => KeyCode::Left,
b'C' => KeyCode::Right,
b'A' => KeyCode::Up,
b'B' => KeyCode::Down,
b'H' => KeyCode::Home,
b'F' => KeyCode::End,
b'Z' => KeyCode::BackTab,
b'P' => KeyCode::F(1),
b'Q' => KeyCode::F(2),
b'R' => KeyCode::F(3),
b'S' => KeyCode::F(4),
_ => return None,
};
Some(code)
}
fn parse_libtickit_key_codes(code: u8) -> KeyCode {
match code {
27 => KeyCode::Esc,
127 => KeyCode::Backspace,
code => KeyCode::Char(code as char),
}
}
fn parse_key_mods(mods: u8) -> Option<KeyMod> {
let mods = match mods {
2 => KeyMod::Shift,
3 => KeyMod::Alt,
4 => KeyMod::AltShift,
5 => KeyMod::Ctrl,
6 => KeyMod::CtrlShift,
7 => KeyMod::AltCtrl,
8 => KeyMod::AltCtrlShift,
_ => return None,
};
Some(mods)
}
/// Parses a CSI sequence, just after reading ^[
///
/// Returns Result<Event, io::Error>, Event may be unsupported.
fn parse_csi<I>(iter: &mut I) -> io::Result<Event>
where
I: Iterator<Item = Result<u8, Error>>,
{
Ok(match iter.next() {
Some(Ok(b'[')) => match iter.next() {
Some(Ok(val @ b'A'..=b'E')) => Event::Key(Key::new(KeyCode::F(1 + val - b'A'))),
_ => return Err(Error::new(ErrorKind::Other, "Failed to parse csi code [")),
},
Some(Ok(b'D')) => Event::Key(Key::new(KeyCode::Left)),
Some(Ok(b'C')) => Event::Key(Key::new(KeyCode::Right)),
Some(Ok(b'A')) => Event::Key(Key::new(KeyCode::Up)),
Some(Ok(b'B')) => Event::Key(Key::new(KeyCode::Down)),
Some(Ok(b'H')) => Event::Key(Key::new(KeyCode::Home)),
Some(Ok(b'F')) => Event::Key(Key::new(KeyCode::End)),
Some(Ok(b'Z')) => Event::Key(Key::new(KeyCode::BackTab)),
Some(Ok(b'M')) => {
// X10 emulation mouse encoding: ESC [ CB Cx Cy (6 characters only).
if let (Some(cb), Some(cx), Some(cy)) =
(next_char(iter), next_char(iter), next_char(iter))
{
let cb = cb as i8 - 32;
let cx = cx.saturating_sub(32) as u16;
let cy = cy.saturating_sub(32) as u16;
Event::Mouse(match cb & 0b11 {
0 => {
if cb & 0x40 != 0 {
MouseEvent::Press(MouseButton::WheelUp, cx, cy)
} else {
MouseEvent::Press(MouseButton::Left, cx, cy)
}
}
1 => {
if cb & 0x40 != 0 {
MouseEvent::Press(MouseButton::WheelDown, cx, cy)
} else {
MouseEvent::Press(MouseButton::Middle, cx, cy)
}
}
2 => MouseEvent::Press(MouseButton::Right, cx, cy),
3 => MouseEvent::Release(cx, cy),
_ => return Err(Error::new(ErrorKind::Other, "Failed to parse csi code M")),
})
} else {
return Err(Error::new(
ErrorKind::Other,
"Failed to parse X10 emulation mouse encoding. Expected: ESC [ CB Cx Cy (6 characters only)."
));
}
}
Some(Ok(b'<')) => {
// xterm mouse encoding:
// ESC [ < Cb ; Cx ; Cy (;) (M or m)
let mut buf = Vec::new();
if let Some(mut c) = next_char(iter) {
while !matches!(c, b'm' | b'M') {
buf.push(c);
if let Some(new_c) = next_char(iter) {
c = new_c
}
}
if !buf.is_empty() {
if let Ok(str_buf) = String::from_utf8(buf) {
let nums = &mut str_buf.split(';');
if let (Some(cb), Some(cx), Some(cy)) =
(nums.next(), nums.next(), nums.next())
{
if let (Ok(cb), Ok(cx), Ok(cy)) =
(cb.parse::<u16>(), cx.parse::<u16>(), cy.parse::<u16>())
{
let event = match cb {
0..=2 | 64..=65 => {
let button = match cb {
0 => MouseButton::Left,
1 => MouseButton::Middle,
2 => MouseButton::Right,
64 => MouseButton::WheelUp,
65 => MouseButton::WheelDown,
_ => unreachable!(),
};
match c {
b'M' => MouseEvent::Press(button, cx, cy),
b'm' => MouseEvent::Release(cx, cy),
_ => {
return Err(Error::new(
ErrorKind::Other,
"Failed to parse csi code M or m after <",
))
}
}
}
32 => MouseEvent::Hold(cx, cy),
3 => MouseEvent::Release(cx, cy),
_ => {
return Err(Error::new(
ErrorKind::Other,
"Failed to parse csi code as mouse event",
))
}
};
return Ok(Event::Mouse(event));
}
}
}
}
}
return Err(Error::new(
ErrorKind::Other,
"Failed to parse xterm mouse encoding. Expected: ESC [ < Cb ; Cx ; Cy (;) (M or m)",
));
}
Some(Ok(c @ b'0'..=b'9')) => {
// Numbered escape code.
let mut buf = vec![c];
if let Some(mut c) = next_char(iter) {
// The final byte of a CSI sequence can be in the range 64-126, so
// let's keep reading anything else.
while !(64..=126).contains(&c) {
buf.push(c);
if let Some(new_c) = next_char(iter) {
c = new_c
}
}
match c {
b'^' => {
// rxvt ctrl codes for mod + special keys:
// ESC [ x ^
if let Ok(str_buf) = String::from_utf8(buf) {
if let Ok(to_int) = str_buf.parse::<u8>() {
return if let Some(code) = parse_special_key_code(to_int) {
Ok(Event::Key(Key::new_mod(code, KeyMod::Ctrl)))
} else {
Err(Error::new(
ErrorKind::Other,
"Unrecognized rxvt key encoding.",
))
};
}
}
return Err(Error::new(
ErrorKind::Other,
"Failed to parse rxvt mod + special keys.",
));
}
// rxvt mouse encoding:
// ESC [ Cb ; Cx ; Cy ; M
b'M' => {
if let Ok(str_buf) = String::from_utf8(buf) {
let nums = &mut str_buf.split(';');
if let (Some(cb), Some(cx), Some(cy)) =
(nums.next(), nums.next(), nums.next())
{
if let (Ok(cb), Ok(cx), Ok(cy)) =
(cb.parse::<u16>(), cx.parse::<u16>(), cy.parse::<u16>())
{
let event = match cb {
32 => MouseEvent::Press(MouseButton::Left, cx, cy),
33 => MouseEvent::Press(MouseButton::Middle, cx, cy),
34 => MouseEvent::Press(MouseButton::Right, cx, cy),
35 => MouseEvent::Release(cx, cy),
64 => MouseEvent::Hold(cx, cy),
96 | 97 => MouseEvent::Press(MouseButton::WheelUp, cx, cy),
_ => {
return Err(Error::new(
ErrorKind::Other,
"Failed to parse csi code 0-9 as mouse event",
))
}
};
return Ok(Event::Mouse(event));
}
}
}
return Err(Error::new(
ErrorKind::Other,
"Failed to parse rxvt mouse encoding. Expected: ESC [ Cb ; Cx ; Cy ; M",
));
}
// Special key code.
b'~' => {
if let Ok(str_buf) = String::from_utf8(buf) {
// This CSI sequence can be a list of semicolon-separated
// numbers.
let mut nums: Vec<u8> = vec![];
for i in str_buf.split(';') {
if let Ok(c) = i.parse::<u8>() {
nums.push(c);
}
}
let event = match nums.len() {
0 => {
return Err(Error::new(
ErrorKind::Other,
"Failed to parse csi ~, buffer is empty",
))
}
1 => {
if let Some(code) = parse_special_key_code(nums[0]) {
Event::Key(Key::new(code))
} else {
Event::Unsupported(nums)
}
}
2 => {
if let Some(key_code) = parse_special_key_code(nums[0]) {
if let Some(mods) = parse_key_mods(nums[1]) {
Event::Key(Key::new_mod(key_code, mods))
} else {
Event::Unsupported(nums)
}
} else {
Event::Unsupported(nums)
}
}
_ => Event::Unsupported(nums),
};
return Ok(event);
}
return Err(Error::new(
ErrorKind::Other,
"Failed to parse csi code ~ from buffer",
));
}
b'u' => {
// libtickit specification:
// http://www.leonerd.org.uk/hacks/fixterms/
if let Ok(str_buf) = String::from_utf8(buf) {
// This libtickit sequence can be a list of semicolon-separated
// numbers.
let mut nums: Vec<u8> = vec![];
for i in str_buf.split(';') {
if let Ok(c) = i.parse::<u8>() {
nums.push(c);
}
}
let event =
match nums.len() {
0 => return Err(Error::new(
ErrorKind::Other,
"Failed to parse libtickit escape code, buffer is empty",
)),
1 => Event::Unsupported(nums),
2 => {
let key_code = parse_libtickit_key_codes(nums[0]);
if let Some(mods) = parse_key_mods(nums[1]) {
Event::Key(Key::new_mod(key_code, mods))
} else {
Event::Unsupported(nums)
}
}
_ => Event::Unsupported(nums),
};
return Ok(event);
} else {
return Err(Error::new(
ErrorKind::Other,
"Failed to parse libtickit escape code",
));
}
}
val => {
if let Some(key_code) = parse_other_special_key_code(val) {
if let Ok(str_buf) = String::from_utf8(buf) {
let mut nums: Vec<u8> = vec![];
for i in str_buf.split(';') {
if let Ok(c) = i.parse::<u8>() {
nums.push(c);
}
}
if nums.len() == 2 {
if let Some(mods) = parse_key_mods(nums[1]) {
return Ok(Event::Key(Key::new_mod(key_code, mods)));
}
}
return Ok(Event::Unsupported(nums));
}
}
return Err(Error::new(ErrorKind::Other, "Failed to parse csi code"));
}
};
};
return Err(Error::new(
ErrorKind::Other,
"Failed to parse numbered escape code",
));
}
_ => {
return Err(Error::new(
ErrorKind::Other,
"Failed to parse input as csi code, unexpected value",
))
}
})
}
/// Parse `c` as either a single byte ASCII char or a variable size UTF-8 char.
fn parse_utf8_char<I>(c: u8, iter: &mut I) -> io::Result<char>
where
I: Iterator<Item = io::Result<u8>>,
{
if c.is_ascii() {
Ok(c as char)
} else {
let bytes = &mut Vec::new();
bytes.push(c);
loop {
match iter.next() {
Some(Ok(next)) => {
bytes.push(next);
if let Ok(st) = str::from_utf8(bytes) {
if let Some(c) = st.chars().next() {
return Ok(c);
}
}
if bytes.len() >= 4 {
return Err(Error::new(
ErrorKind::Other,
"Input character is not valid UTF-8",
));
}
}
_ => {
return Err(Error::new(
ErrorKind::Other,
"Input character is not valid UTF-8",
))
}
}
}
}
}
#[cfg(test)]
mod test {
use super::*;
use std::array::IntoIter;
use std::collections::HashMap;
use std::iter::FromIterator;
#[test]
fn test_parse_utf8() {
let st = "abcéŷ¤£€ù%323";
let ref mut bytes = st.bytes().map(|x| Ok(x));
let chars = st.chars();
for c in chars {
let b = bytes.next().unwrap().unwrap();
assert!(c == parse_utf8_char(b, bytes).unwrap());
}
}
fn test_parse_event_dynamic(item: u8, map: &mut HashMap<String, Event>) {
for (key, val) in map.iter() {
let mut iter = key.bytes().map(|x| Ok(x));
assert_eq!(*val, parse_event(item, &mut iter).unwrap())
}
}
fn test_parse_event(item: u8, map: &mut HashMap<&str, Event>) {
for (key, val) in map.iter() {
let mut iter = key.bytes().map(|x| Ok(x));
assert_eq!(*val, parse_event(item, &mut iter).unwrap())
}
}
#[test]
fn test_parse_valid_csi_special_codes() {
let mut map = HashMap::<_, _>::from_iter(IntoIter::new([
("[1~", Event::Key(Key::new(KeyCode::Home))),
("[7~", Event::Key(Key::new(KeyCode::Home))),
("[7^", Event::Key(Key::new_mod(KeyCode::Home, KeyMod::Ctrl))),
("[2~", Event::Key(Key::new(KeyCode::Insert))),
("[4~", Event::Key(Key::new(KeyCode::End))),
("[8~", Event::Key(Key::new(KeyCode::End))),
("[5~", Event::Key(Key::new(KeyCode::PageUp))),
("[6~", Event::Key(Key::new(KeyCode::PageDown))),
("[H", Event::Key(Key::new(KeyCode::Home))),
("[F", Event::Key(Key::new(KeyCode::End))),
("[D", Event::Key(Key::new(KeyCode::Left))),
("[Z", Event::Key(Key::new(KeyCode::BackTab))),
(
"[1;2F",
Event::Key(Key::new_mod(KeyCode::End, KeyMod::Shift)),
),
("[1;3F", Event::Key(Key::new_mod(KeyCode::End, KeyMod::Alt))),
(
"[1;4F",
Event::Key(Key::new_mod(KeyCode::End, KeyMod::AltShift)),
),
(
"[1;5F",
Event::Key(Key::new_mod(KeyCode::End, KeyMod::Ctrl)),
),
(
"[1;6F",
Event::Key(Key::new_mod(KeyCode::End, KeyMod::CtrlShift)),
),
(
"[1;7F",
Event::Key(Key::new_mod(KeyCode::End, KeyMod::AltCtrl)),
),
(
"[1;8F",
Event::Key(Key::new_mod(KeyCode::End, KeyMod::AltCtrlShift)),
),
(
"[1;2C",
Event::Key(Key::new_mod(KeyCode::Right, KeyMod::Shift)),
),
(
"[1;3C",
Event::Key(Key::new_mod(KeyCode::Right, KeyMod::Alt)),
),
(
"[1;4C",
Event::Key(Key::new_mod(KeyCode::Right, KeyMod::AltShift)),
),
(
"[1;5C",
Event::Key(Key::new_mod(KeyCode::Right, KeyMod::Ctrl)),
),
(
"[1;6C",
Event::Key(Key::new_mod(KeyCode::Right, KeyMod::CtrlShift)),
),
(
"[1;7C",
Event::Key(Key::new_mod(KeyCode::Right, KeyMod::AltCtrl)),
),
(
"[1;8C",
Event::Key(Key::new_mod(KeyCode::Right, KeyMod::AltCtrlShift)),
),
("[C", Event::Key(Key::new(KeyCode::Right))),
("[A", Event::Key(Key::new(KeyCode::Up))),
("[B", Event::Key(Key::new(KeyCode::Down))),
(
"[11^",
Event::Key(Key::new_mod(KeyCode::F(1), KeyMod::Ctrl)),
),
("[11~", Event::Key(Key::new(KeyCode::F(1)))),
("[12~", Event::Key(Key::new(KeyCode::F(2)))),
("[13~", Event::Key(Key::new(KeyCode::F(3)))),
("[14~", Event::Key(Key::new(KeyCode::F(4)))),
("[15~", Event::Key(Key::new(KeyCode::F(5)))),
("[17~", Event::Key(Key::new(KeyCode::F(6)))),
("[18~", Event::Key(Key::new(KeyCode::F(7)))),
("[19~", Event::Key(Key::new(KeyCode::F(8)))),
("[20~", Event::Key(Key::new(KeyCode::F(9)))),
("[21~", Event::Key(Key::new(KeyCode::F(10)))),
("[23~", Event::Key(Key::new(KeyCode::F(11)))),
("[24~", Event::Key(Key::new(KeyCode::F(12)))),
(
"[3;2~",
Event::Key(Key::new_mod(KeyCode::Delete, KeyMod::Shift)),
),
(
"[3;3~",
Event::Key(Key::new_mod(KeyCode::Delete, KeyMod::Alt)),
),
(
"[3;4~",
Event::Key(Key::new_mod(KeyCode::Delete, KeyMod::AltShift)),
),
(
"[3;5~",
Event::Key(Key::new_mod(KeyCode::Delete, KeyMod::Ctrl)),
),
(
"[3;6~",
Event::Key(Key::new_mod(KeyCode::Delete, KeyMod::CtrlShift)),
),
(
"[3;7~",
Event::Key(Key::new_mod(KeyCode::Delete, KeyMod::AltCtrl)),
),
(
"[3;8~",
Event::Key(Key::new_mod(KeyCode::Delete, KeyMod::AltCtrlShift)),
),
(
"[5;2~",
Event::Key(Key::new_mod(KeyCode::PageUp, KeyMod::Shift)),
),
(
"[6;2~",
Event::Key(Key::new_mod(KeyCode::PageDown, KeyMod::Shift)),
),
(
"[15;2~",
Event::Key(Key::new_mod(KeyCode::F(5), KeyMod::Shift)),
),
(
"[17;2~",
Event::Key(Key::new_mod(KeyCode::F(6), KeyMod::Shift)),
),
(
"[18;2~",
Event::Key(Key::new_mod(KeyCode::F(7), KeyMod::Shift)),
),
(
"[19;2~",
Event::Key(Key::new_mod(KeyCode::F(8), KeyMod::Shift)),
),
(
"[20;2~",
Event::Key(Key::new_mod(KeyCode::F(9), KeyMod::Shift)),
),
(
"[21;2~",
Event::Key(Key::new_mod(KeyCode::F(10), KeyMod::Shift)),
),
(
"[23;2~",
Event::Key(Key::new_mod(KeyCode::F(11), KeyMod::Shift)),
),
(
"[24;2~",
Event::Key(Key::new_mod(KeyCode::F(12), KeyMod::Shift)),
),
]));
let item = b'\x1B';
test_parse_event(item, &mut map);
}
#[test]
fn test_parse_x10_emulation_mouse_encoding() {
let mut map = HashMap::<_, _>::from_iter(IntoIter::new([
(
"[M\x00\x00\x00",
Event::Mouse(MouseEvent::Press(MouseButton::WheelUp, 0, 0)),
),
(
"[M\x40\x30\x32",
Event::Mouse(MouseEvent::Press(MouseButton::Left, 16, 18)),
),
(
"[M\x01\x00\x00",
Event::Mouse(MouseEvent::Press(MouseButton::WheelDown, 0, 0)),
),
(
"[M\x41\x29\x30",
Event::Mouse(MouseEvent::Press(MouseButton::Middle, 9, 16)),
),
(
"[M\x02\x00\x30",
Event::Mouse(MouseEvent::Press(MouseButton::Right, 0, 16)),
),
("[M\x03\x30\x7F", Event::Mouse(MouseEvent::Release(16, 95))),
]));
let item = b'\x1B';
test_parse_event(item, &mut map);
}
#[test]
fn test_parse_rxvt_mouse_encoding() {
let mut map = HashMap::<_, _>::from_iter(IntoIter::new([
(
"[32;65;8;M",
Event::Mouse(MouseEvent::Press(MouseButton::Left, 65, 8)),
),
(
"[33;5;2;M",
Event::Mouse(MouseEvent::Press(MouseButton::Middle, 5, 2)),
),
(
"[34;65;8;M",
Event::Mouse(MouseEvent::Press(MouseButton::Right, 65, 8)),
),
("[35;65;8;M", Event::Mouse(MouseEvent::Release(65, 8))),
("[64;113;234;M", Event::Mouse(MouseEvent::Hold(113, 234))),
(
"[96;65;8;M",
Event::Mouse(MouseEvent::Press(MouseButton::WheelUp, 65, 8)),
),
(
"[97;65;8;M",
Event::Mouse(MouseEvent::Press(MouseButton::WheelUp, 65, 8)),
),
]));
let item = b'\x1B';
test_parse_event(item, &mut map);
}
#[test]
fn test_parse_valid_csi_xterm_mouse() {
let mut map = HashMap::<_, _>::from_iter(IntoIter::new([
(
"[<0;65;8;M",
Event::Mouse(MouseEvent::Press(MouseButton::Left, 65, 8)),
),
(
"[<1;5;2;M",
Event::Mouse(MouseEvent::Press(MouseButton::Middle, 5, 2)),
),
(
"[<2;65;8;M",
Event::Mouse(MouseEvent::Press(MouseButton::Right, 65, 8)),
),
(
"[<64;65;8;M",
Event::Mouse(MouseEvent::Press(MouseButton::WheelUp, 65, 8)),
),
(
"[<65;82;1;M",
Event::Mouse(MouseEvent::Press(MouseButton::WheelDown, 82, 1)),
),
("[<3;65;8;m", Event::Mouse(MouseEvent::Release(65, 8))),
("[<32;113;234;m", Event::Mouse(MouseEvent::Hold(113, 234))),
]));
let item = b'\x1B';
test_parse_event(item, &mut map);
}
#[test]
fn test_parse_ctrl_key_alphanumeric() {
// a
let mut map = HashMap::<_, _>::from_iter(IntoIter::new([(
"",
Event::Key(Key::new_mod(KeyCode::Char('a'), KeyMod::Ctrl)),
)]));
let item = b'\x01';
test_parse_event(item, &mut map);
// z
let mut map = HashMap::<_, _>::from_iter(IntoIter::new([(
"",
Event::Key(Key::new_mod(KeyCode::Char('z'), KeyMod::Ctrl)),
)]));
let item = b'\x1A';
test_parse_event(item, &mut map);
// 4
let mut map = HashMap::<_, _>::from_iter(IntoIter::new([(
"",
Event::Key(Key::new_mod(KeyCode::Char('4'), KeyMod::Ctrl)),
)]));
let item = b'\x1C';
test_parse_event(item, &mut map);
// 7
let mut map = HashMap::<_, _>::from_iter(IntoIter::new([(
"",
Event::Key(Key::new_mod(KeyCode::Char('7'), KeyMod::Ctrl)),
)]));
let item = b'\x1F';
test_parse_event(item, &mut map);
// newline
let mut map = HashMap::<_, _>::from_iter(IntoIter::new([(
"",
Event::Key(Key::new(KeyCode::Char('\n'))),
)]));
let item = b'\n';
test_parse_event(item, &mut map);
// carriage return
let mut map = HashMap::<_, _>::from_iter(IntoIter::new([(
"",
Event::Key(Key::new(KeyCode::Char('\n'))),
)]));
let item = b'\r';
test_parse_event(item, &mut map);
// tab
let mut map = HashMap::<_, _>::from_iter(IntoIter::new([(
"",
Event::Key(Key::new(KeyCode::Char('\t'))),
)]));
let item = b'\t';
test_parse_event(item, &mut map);
// backspace
let mut map = HashMap::<_, _>::from_iter(IntoIter::new([(
"",
Event::Key(Key::new(KeyCode::Backspace)),
)]));
let item = b'\x7F';
test_parse_event(item, &mut map);
// null
let mut map =
HashMap::<_, _>::from_iter(IntoIter::new([("", Event::Key(Key::new(KeyCode::Null)))]));
let item = b'\0';
test_parse_event(item, &mut map);
}
#[test]
fn test_parse_non_csi_escape_codes() {
let mut map = HashMap::<_, _>::from_iter(IntoIter::new([
("OP", Event::Key(Key::new(KeyCode::F(1)))),
("OS", Event::Key(Key::new(KeyCode::F(4)))),
(
"O5P^",
Event::Key(Key::new_mod(KeyCode::F(1), KeyMod::Ctrl)),
),
(
"O5Q^",
Event::Key(Key::new_mod(KeyCode::F(2), KeyMod::Ctrl)),
),
(
"O5R^",
Event::Key(Key::new_mod(KeyCode::F(3), KeyMod::Ctrl)),
),
(
"O5S^",
Event::Key(Key::new_mod(KeyCode::F(4), KeyMod::Ctrl)),
),
(
"\u{1}",
Event::Key(Key::new_mod(KeyCode::Char('a'), KeyMod::AltCtrl)),
),
(
"\u{1a}",
Event::Key(Key::new_mod(KeyCode::Char('z'), KeyMod::AltCtrl)),
),
(
"\u{61}",
Event::Key(Key::new_mod(KeyCode::Char('a'), KeyMod::Alt)),
),
(
"\u{7a}",
Event::Key(Key::new_mod(KeyCode::Char('z'), KeyMod::Alt)),
),
]));
let item = b'\x1B';
test_parse_event(item, &mut map);
}
#[test]
fn test_parse_invalid() {
let item = b'\x1B';
let mut iter = "[x".bytes().map(|x| Ok(x));
assert_eq!(
parse_event(item, &mut iter).unwrap(),
Event::Unsupported(vec![b'\x1B', b'[', b'x']),
)
}
#[test]
fn test_parse_libtickit_ascii() {
let csi_sequences = vec![b'\x1b', b'\x9b'];
let mod_map = HashMap::<_, _>::from_iter(IntoIter::new([
("6", KeyMod::CtrlShift),
("8", KeyMod::AltCtrlShift),
]));
let mut upper_letters = HashMap::new();
for n in 65..91 {
upper_letters.insert(format!("{}", n), KeyCode::Char((n as u8) as char));
}
for csi in csi_sequences.iter() {
let item = csi;
let mut map = HashMap::new();
for (mod_str, mods) in mod_map.iter() {
for (letter_str, code) in upper_letters.iter() {
let start_seq = if *csi == b'\x9b' { "" } else { "[" };
let str = format!("{}{};{}u", start_seq, letter_str, mod_str);
map.insert(str, Event::Key(Key::new_mod(*code, *mods)));
}
}
test_parse_event_dynamic(*item, &mut map);
}
}
#[test]
fn test_parse_libtickit_special() {
let csi_sequences = vec![b'\x1b', b'\x9b'];
let mod_map = HashMap::<_, _>::from_iter(IntoIter::new([
("2", KeyMod::Shift),
("3", KeyMod::Alt),
("4", KeyMod::AltShift),
("5", KeyMod::Ctrl),
("6", KeyMod::CtrlShift),
("7", KeyMod::AltCtrl),
("8", KeyMod::AltCtrlShift),
]));
let mut special_key_codes = HashMap::new();
special_key_codes.insert("27", KeyCode::Esc);
special_key_codes.insert("127", KeyCode::Backspace);
for csi in csi_sequences.iter() {
let mut map = HashMap::new();
let item = csi;
for (mod_str, mods) in mod_map.iter() {
for (letter_str, code) in special_key_codes.iter() {
let start_seq = if *csi == b'\x9b' { "" } else { "[" };
let str = format!("{}{};{}u", start_seq, letter_str, mod_str);
map.insert(str, Event::Key(Key::new_mod(*code, *mods)));
}
}
test_parse_event_dynamic(*item, &mut map);
}
}
}