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added more special keys 

Key now supports Home, End, PageUp, PageDown, Delete, Insert and
Function keys. All this is done through the detection of both VT100
escape codes and more modern standard counterparts.
For instance, F2 can be both
    ESC OQ
on VT100, screen, and some versions of xterm and
    ESC [12~
on rxvt and other xterm versions depending on your terminal
This commit is contained in:
IGI-111 2016-07-15 07:41:31 +02:00
parent 3996d24f12
commit 0e74a7672f
1 changed files with 54 additions and 0 deletions
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54
src/input.rs
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@ -15,6 +15,20 @@ pub enum Key {
Up,
/// Down arrow.
Down,
/// Home key.
Home,
/// End key.
End,
/// Page Up key.
PageUp,
/// Page Down key.
PageDown,
/// Delete key.
Delete,
/// Insert key.
Insert,
/// Function keys.
F(u8),
/// Normal character.
Char(char),
/// Alt modified character.
@ -28,6 +42,7 @@ pub enum Key {
/// Null byte.
Null,
#[allow(missing_docs)]
#[doc(hidden)]
__IsNotComplete
@ -46,11 +61,50 @@ impl<I: Iterator<Item = Result<char, io::CharsError>>> Iterator for Keys<I> {
fn next(&mut self) -> Option<Result<Key, io::CharsError>> {
Some(match self.chars.next() {
Some(Ok('\x1B')) => Ok(match self.chars.next() {
Some(Ok('O')) => match self.chars.next() {
Some(Ok('P')) => Key::F(1),
Some(Ok('Q')) => Key::F(2),
Some(Ok('R')) => Key::F(3),
Some(Ok('S')) => Key::F(4),
_ => Key::Invalid,
},
Some(Ok('[')) => match self.chars.next() {
Some(Ok('D')) => Key::Left,
Some(Ok('C')) => Key::Right,
Some(Ok('A')) => Key::Up,
Some(Ok('B')) => Key::Down,
Some(Ok('H')) => Key::Home,
Some(Ok('F')) => Key::End,
Some(Ok(c @ '1' ... '6')) => match self.chars.next() {
Some(Ok('~')) => match c {
'1' => Key::Home,
'2' => Key::Insert,
'3' => Key::Delete,
'4' => Key::End,
'5' => Key::PageUp,
'6' => Key::PageDown,
_ => Key::Invalid,
},
Some(Ok(k @ '0' ... '9')) => match self.chars.next() {
Some(Ok('~')) => match (c, k) {
('1', '1') => Key::F(1),
('1', '2') => Key::F(2),
('1', '3') => Key::F(3),
('1', '4') => Key::F(4),
('1', '5') => Key::F(5),
('1', '7') => Key::F(6),
('1', '8') => Key::F(7),
('1', '9') => Key::F(8),
('2', '0') => Key::F(9),
('2', '1') => Key::F(10),
('2', '3') => Key::F(11),
('2', '4') => Key::F(12),
_ => Key::Invalid,
},
_ => Key::Invalid,
},
_ => Key::Invalid,
},
_ => Key::Invalid,
},
Some(Ok(c)) => Key::Alt(c),