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ncurses: compute whole modifier table at runtime

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This commit is contained in:
Alexandre Bury 2017-11-20 11:44:23 -08:00
parent b2097bd1c8
commit 0c39f52016
1 changed files with 76 additions and 76 deletions
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152
src/backend/curses/n.rs
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@ -365,26 +365,6 @@ where
} }
} }
fn parse_modifier(code: i32, key: Key) -> Event {
match code {
0 => Event::Alt(key),
1 => Event::AltShift(key),
2 => Event::Ctrl(key),
3 => Event::CtrlShift(key),
4 => Event::CtrlAlt(key),
_ => {
warn!("Parsing invalid modifier: {} for key {:?}", code, key);
Event::Unknown(split_i32(code))
}
}
}
fn add_modifiers(start: i32, key: Key, map: &mut HashMap<i32, Event>) {
for i in 0..5 {
map.insert(start + i, parse_modifier(i, key));
}
}
fn add_fn<F>(start: i32, with_key: F, map: &mut HashMap<i32, Event>) fn add_fn<F>(start: i32, with_key: F, map: &mut HashMap<i32, Event>)
where where
F: Fn(Key) -> Event, F: Fn(Key) -> Event,
@ -398,47 +378,47 @@ fn initialize_keymap() -> HashMap<i32, Event> {
// First, define the static mappings. // First, define the static mappings.
let mut map = hashmap!{ let mut map = hashmap!{
// Value sent by ncurses when nothing happens // Value sent by ncurses when nothing happens
-1 => Event::Refresh, -1 => Event::Refresh,
// Values under 256 are chars and control values // Values under 256 are chars and control values
// //
// Tab is '\t' // Tab is '\t'
9 => Event::Key(Key::Tab), 9 => Event::Key(Key::Tab),
// Treat '\n' and the numpad Enter the same // Treat '\n' and the numpad Enter the same
10 => Event::Key(Key::Enter), 10 => Event::Key(Key::Enter),
ncurses::KEY_ENTER => Event::Key(Key::Enter), ncurses::KEY_ENTER => Event::Key(Key::Enter),
// This is the escape key when pressed by itself. // This is the escape key when pressed by itself.
// When used for control sequences, // When used for control sequences,
// it should have been caught earlier. // it should have been caught earlier.
27 => Event::Key(Key::Esc), 27 => Event::Key(Key::Esc),
// `Backspace` sends 127, but Ctrl-H sends `Backspace` // `Backspace` sends 127, but Ctrl-H sends `Backspace`
127 => Event::Key(Key::Backspace), 127 => Event::Key(Key::Backspace),
ncurses::KEY_BACKSPACE => Event::Key(Key::Backspace), ncurses::KEY_BACKSPACE => Event::Key(Key::Backspace),
410 => Event::WindowResize, 410 => Event::WindowResize,
ncurses::KEY_B2 => Event::Key(Key::NumpadCenter), ncurses::KEY_B2 => Event::Key(Key::NumpadCenter),
ncurses::KEY_DC => Event::Key(Key::Del), ncurses::KEY_DC => Event::Key(Key::Del),
ncurses::KEY_IC => Event::Key(Key::Ins), ncurses::KEY_IC => Event::Key(Key::Ins),
ncurses::KEY_BTAB => Event::Shift(Key::Tab), ncurses::KEY_BTAB => Event::Shift(Key::Tab),
ncurses::KEY_SLEFT => Event::Shift(Key::Left), ncurses::KEY_SLEFT => Event::Shift(Key::Left),
ncurses::KEY_SRIGHT => Event::Shift(Key::Right), ncurses::KEY_SRIGHT => Event::Shift(Key::Right),
ncurses::KEY_LEFT => Event::Key(Key::Left), ncurses::KEY_LEFT => Event::Key(Key::Left),
ncurses::KEY_RIGHT => Event::Key(Key::Right), ncurses::KEY_RIGHT => Event::Key(Key::Right),
ncurses::KEY_UP => Event::Key(Key::Up), ncurses::KEY_UP => Event::Key(Key::Up),
ncurses::KEY_DOWN => Event::Key(Key::Down), ncurses::KEY_DOWN => Event::Key(Key::Down),
ncurses::KEY_SR => Event::Shift(Key::Up), ncurses::KEY_SR => Event::Shift(Key::Up),
ncurses::KEY_SF => Event::Shift(Key::Down), ncurses::KEY_SF => Event::Shift(Key::Down),
ncurses::KEY_PPAGE => Event::Key(Key::PageUp), ncurses::KEY_PPAGE => Event::Key(Key::PageUp),
ncurses::KEY_NPAGE => Event::Key(Key::PageDown), ncurses::KEY_NPAGE => Event::Key(Key::PageDown),
ncurses::KEY_HOME => Event::Key(Key::Home), ncurses::KEY_HOME => Event::Key(Key::Home),
ncurses::KEY_END => Event::Key(Key::End), ncurses::KEY_END => Event::Key(Key::End),
ncurses::KEY_SHOME => Event::Shift(Key::Home), ncurses::KEY_SHOME => Event::Shift(Key::Home),
ncurses::KEY_SEND => Event::Shift(Key::End), ncurses::KEY_SEND => Event::Shift(Key::End),
ncurses::KEY_SDC => Event::Shift(Key::Del), ncurses::KEY_SDC => Event::Shift(Key::Del),
ncurses::KEY_SNEXT => Event::Shift(Key::PageDown), ncurses::KEY_SNEXT => Event::Shift(Key::PageDown),
ncurses::KEY_SPREVIOUS => Event::Shift(Key::PageUp), ncurses::KEY_SPREVIOUS => Event::Shift(Key::PageUp),
}; };
// Then add some dynamic ones // Then add some dynamic ones
@ -455,25 +435,45 @@ fn initialize_keymap() -> HashMap<i32, Event> {
add_fn(313, Event::Alt, &mut map); add_fn(313, Event::Alt, &mut map);
// Those codes actually vary between ncurses versions... // Those codes actually vary between ncurses versions...
// Use ncurses::keyname to find the key representing kDC3 (alt-DEL)
let del_offset = (512..1024)
.find(|&code| {
ncurses::keyname(code)
.map(|name| &name == "kDC3")
.unwrap_or(false)
})
.unwrap_or(522);
add_modifiers(del_offset, Key::Del, &mut map); let key_names = hashmap!{
add_modifiers(del_offset + 6, Key::Down, &mut map); "DC" => Key::Del,
add_modifiers(del_offset + 11, Key::End, &mut map); "DN" => Key::Down,
add_modifiers(del_offset + 17, Key::Home, &mut map); "END" => Key::End,
add_modifiers(del_offset + 23, Key::Ins, &mut map); "HOM" => Key::Home,
add_modifiers(del_offset + 28, Key::Left, &mut map); "IC" => Key::Ins,
add_modifiers(del_offset + 33, Key::PageDown, &mut map); "LFT" => Key::Left,
add_modifiers(del_offset + 38, Key::PageUp, &mut map); "NXT" => Key::PageDown,
add_modifiers(del_offset + 43, Key::Right, &mut map); "PRV" => Key::PageUp,
add_modifiers(del_offset + 49, Key::Up, &mut map); "RIT" => Key::Right,
"UP" => Key::Up,
};
for code in 512..1024 {
let name = match ncurses::keyname(code) {
Some(name) => name,
None => continue,
};
if !name.starts_with("k") {
continue;
}
let (key_name, modifier) = name[1..].split_at(name.len() - 2);
let key = match key_names.get(key_name) {
Some(&key) => key,
None => continue,
};
let event = match modifier {
"3" => Event::Alt(key),
"4" => Event::AltShift(key),
"5" => Event::Ctrl(key),
"6" => Event::CtrlShift(key),
"7" => Event::CtrlAlt(key),
_ => continue,
};
map.insert(code, event);
}
map map
} }