Replace UnknownCsi with generalized Event::Unsupported (#80)
This commit is contained in:
parent
f9eaf6d0bc
commit
32ff8ba96e
367
src/event.rs
367
src/event.rs
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@ -12,10 +12,7 @@ pub enum Event {
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/// A mouse button press, release or wheel use at specific coordinates.
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Mouse(MouseEvent),
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/// An event that cannot currently be evaluated.
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Unsupported,
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/// A CSI sequence unrecognized by termion. Does not inlude the leading `^[`.
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UnknownCsi(Vec<u8>),
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Unsupported(Vec<u8>),
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}
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/// A mouse related event.
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@ -97,210 +94,218 @@ pub enum Key {
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Esc,
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#[doc(hidden)]
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__IsNotComplete
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__IsNotComplete,
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}
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/// Parse an Event from `item` and possibly subsequent bytes through `iter`.
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pub fn parse_event<I>(item: Result<u8, Error>, iter: &mut I) -> Result<Event, Error>
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where I: Iterator<Item = Result<u8, Error>>
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pub fn parse_event<I>(item: u8, iter: &mut I) -> Result<Event, Error>
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where I: Iterator<Item = Result<u8, Error>>
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{
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let error = Err(Error::new(ErrorKind::Other, "Could not parse an event"));
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let error = Error::new(ErrorKind::Other, "Could not parse an event");
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match item {
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Ok(b'\x1B') => {
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b'\x1B' => {
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// This is an escape character, leading a control sequence.
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Ok(match iter.next() {
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Some(Ok(b'O')) => {
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match iter.next() {
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// F1-F4
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Some(Ok(val @ b'P' ... b'S')) => Event::Key(Key::F(1 + val - b'P')),
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_ => return error,
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Some(Ok(val @ b'P'...b'S')) => Event::Key(Key::F(1 + val - b'P')),
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_ => return Err(error),
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}
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}
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Some(Ok(b'[')) => {
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// This is a CSI sequence.
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match iter.next() {
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Some(Ok(b'D')) => Event::Key(Key::Left),
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Some(Ok(b'C')) => Event::Key(Key::Right),
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Some(Ok(b'A')) => Event::Key(Key::Up),
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Some(Ok(b'B')) => Event::Key(Key::Down),
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Some(Ok(b'H')) => Event::Key(Key::Home),
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Some(Ok(b'F')) => Event::Key(Key::End),
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Some(Ok(b'M')) => {
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// X10 emulation mouse encoding: ESC [ CB Cx Cy (6 characters only).
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let cb = iter.next().unwrap().unwrap() as i8 - 32;
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// (1, 1) are the coords for upper left.
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let cx = (iter.next().unwrap().unwrap() as u8).saturating_sub(32) as u16;
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let cy = (iter.next().unwrap().unwrap() as u8).saturating_sub(32) as u16;
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Event::Mouse(match cb & 0b11 {
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0 => {
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if cb & 0x40 != 0 {
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MouseEvent::Press(MouseButton::WheelUp, cx, cy)
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} else {
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MouseEvent::Press(MouseButton::Left, cx, cy)
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}
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}
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1 => {
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if cb & 0x40 != 0 {
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MouseEvent::Press(MouseButton::WheelDown, cx, cy)
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} else {
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MouseEvent::Press(MouseButton::Middle, cx, cy)
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}
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}
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2 => MouseEvent::Press(MouseButton::Right, cx, cy),
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3 => MouseEvent::Release(cx, cy),
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_ => return error,
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})
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},
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Some(Ok(b'<')) => {
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// xterm mouse encoding:
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// ESC [ < Cb ; Cx ; Cy ; (M or m)
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let mut buf = Vec::new();
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let mut c = iter.next().unwrap().unwrap();
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while match c {
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b'm' | b'M' => false,
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_ => true,
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} {
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buf.push(c);
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c = iter.next().unwrap().unwrap();
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}
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let str_buf = String::from_utf8(buf).unwrap();
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let nums = &mut str_buf.split(';');
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let cb = nums.next().unwrap().parse::<u16>().unwrap();
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let cx = nums.next().unwrap().parse::<u16>().unwrap();
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let cy = nums.next().unwrap().parse::<u16>().unwrap();
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let event = match cb {
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0...2 | 64...65 => {
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let button = match cb {
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0 => MouseButton::Left,
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1 => MouseButton::Middle,
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2 => MouseButton::Right,
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64 => MouseButton::WheelUp,
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65 => MouseButton::WheelDown,
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_ => return error,
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};
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match c {
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b'M' => MouseEvent::Press(button, cx, cy),
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b'm' => MouseEvent::Release(cx, cy),
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_ => return error,
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}
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}
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32 => MouseEvent::Hold(cx, cy),
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_ => return error,
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};
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Event::Mouse(event)
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},
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Some(Ok(c @ b'0'...b'9')) => {
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// Numbered escape code.
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let mut buf = Vec::new();
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buf.push(c);
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let mut c = iter.next().unwrap().unwrap();
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// The final byte of a CSI sequence can be in the range 64-126, so
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// let's keep reading anything else.
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while c < 64 || c > 126 {
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buf.push(c);
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c = iter.next().unwrap().unwrap();
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}
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// Include the terminal char in the buffer.
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// We'll want it if we return an unknown sequence.
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buf.push(c);
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match c {
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// rxvt mouse encoding:
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// ESC [ Cb ; Cx ; Cy ; M
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b'M' => {
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let str_buf = String::from_utf8(buf).unwrap();
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//
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let nums: Vec<u16> = str_buf[..str_buf.len()-1].split(';')
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.map(|n| n.parse().unwrap())
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.collect();
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let cb = nums[0];
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let cx = nums[1];
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let cy = nums[2];
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let event = match cb {
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32 => MouseEvent::Press(MouseButton::Left, cx, cy),
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33 => MouseEvent::Press(MouseButton::Middle, cx, cy),
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34 => MouseEvent::Press(MouseButton::Right, cx, cy),
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35 => MouseEvent::Release(cx, cy),
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64 => MouseEvent::Hold(cx, cy),
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96 |
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97 => MouseEvent::Press(MouseButton::WheelUp, cx, cy),
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_ => return Ok(Event::UnknownCsi(str_buf.into_bytes())),
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};
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Event::Mouse(event)
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},
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// Special key code.
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b'~' => {
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let str_buf = String::from_utf8(buf).unwrap();
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// This CSI sequence can be a list of semicolon-separated
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// numbers.
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let nums: Vec<u8> = str_buf[..str_buf.len()-1].split(';')
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.map(|n| n.parse().unwrap())
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.collect();
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if nums.is_empty() {
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return Ok(Event::UnknownCsi(str_buf.into_bytes()));
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}
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// TODO: handle multiple values for key modififiers (ex: values
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// [3, 2] means Shift+Delete)
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if nums.len() > 1 {
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return Ok(Event::UnknownCsi(str_buf.into_bytes()));
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}
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match nums[0] {
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1 | 7 => Event::Key(Key::Home),
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2 => Event::Key(Key::Insert),
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3 => Event::Key(Key::Delete),
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4 | 8 => Event::Key(Key::End),
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5 => Event::Key(Key::PageUp),
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6 => Event::Key(Key::PageDown),
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v @ 11...15 => Event::Key(Key::F(v - 10)),
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v @ 17...21 => Event::Key(Key::F(v - 11)),
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v @ 23...24 => Event::Key(Key::F(v - 12)),
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_ => return Ok(Event::UnknownCsi(str_buf.into_bytes())),
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}
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},
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_ => return Ok(Event::UnknownCsi(buf)),
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}
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},
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_ => return error,
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}
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parse_csi(iter).ok_or(error)?
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}
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Some(Ok(c)) => {
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let ch = parse_utf8_char(c, iter);
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Event::Key(Key::Alt(try!(ch)))
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}
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Some(Err(_)) | None => return error,
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Some(Err(_)) | None => return Err(error),
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})
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}
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Ok(b'\n') | Ok(b'\r') => Ok(Event::Key(Key::Char('\n'))),
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Ok(b'\t') => Ok(Event::Key(Key::Char('\t'))),
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Ok(b'\x7F') => Ok(Event::Key(Key::Backspace)),
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Ok(c @ b'\x01'...b'\x1A') => Ok(Event::Key(Key::Ctrl((c as u8 - 0x1 + b'a') as char))),
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Ok(c @ b'\x1C'...b'\x1F') => {
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Ok(Event::Key(Key::Ctrl((c as u8 - 0x1C + b'4') as char)))
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}
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Ok(b'\0') => Ok(Event::Key(Key::Null)),
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Ok(c) => {
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b'\n' | b'\r' => Ok(Event::Key(Key::Char('\n'))),
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b'\t' => Ok(Event::Key(Key::Char('\t'))),
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b'\x7F' => Ok(Event::Key(Key::Backspace)),
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c @ b'\x01'...b'\x1A' => Ok(Event::Key(Key::Ctrl((c as u8 - 0x1 + b'a') as char))),
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c @ b'\x1C'...b'\x1F' => Ok(Event::Key(Key::Ctrl((c as u8 - 0x1C + b'4') as char))),
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b'\0' => Ok(Event::Key(Key::Null)),
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c => {
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Ok({
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let ch = parse_utf8_char(c, iter);
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Event::Key(Key::Char(try!(ch)))
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})
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}
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Err(e) => Err(e),
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}
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}
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/// Parses a CSI sequence, just after reading ^[
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///
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/// Returns None if an unrecognized sequence is found.
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fn parse_csi<I>(iter: &mut I) -> Option<Event>
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where I: Iterator<Item = Result<u8, Error>>
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{
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Some(match iter.next() {
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Some(Ok(b'D')) => Event::Key(Key::Left),
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Some(Ok(b'C')) => Event::Key(Key::Right),
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Some(Ok(b'A')) => Event::Key(Key::Up),
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Some(Ok(b'B')) => Event::Key(Key::Down),
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Some(Ok(b'H')) => Event::Key(Key::Home),
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Some(Ok(b'F')) => Event::Key(Key::End),
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Some(Ok(b'M')) => {
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// X10 emulation mouse encoding: ESC [ CB Cx Cy (6 characters only).
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let mut next = || iter.next().unwrap().unwrap();
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let cb = next() as i8 - 32;
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// (1, 1) are the coords for upper left.
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let cx = next().saturating_sub(32) as u16;
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let cy = next().saturating_sub(32) as u16;
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Event::Mouse(match cb & 0b11 {
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0 => {
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if cb & 0x40 != 0 {
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MouseEvent::Press(MouseButton::WheelUp, cx, cy)
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} else {
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MouseEvent::Press(MouseButton::Left, cx, cy)
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}
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}
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1 => {
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if cb & 0x40 != 0 {
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MouseEvent::Press(MouseButton::WheelDown, cx, cy)
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} else {
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MouseEvent::Press(MouseButton::Middle, cx, cy)
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}
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}
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2 => MouseEvent::Press(MouseButton::Right, cx, cy),
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3 => MouseEvent::Release(cx, cy),
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_ => return None,
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})
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}
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Some(Ok(b'<')) => {
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// xterm mouse encoding:
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// ESC [ < Cb ; Cx ; Cy ; (M or m)
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let mut buf = Vec::new();
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let mut c = iter.next().unwrap().unwrap();
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while match c {
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b'm' | b'M' => false,
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_ => true,
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} {
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buf.push(c);
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c = iter.next().unwrap().unwrap();
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}
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let str_buf = String::from_utf8(buf).unwrap();
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let nums = &mut str_buf.split(';');
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let cb = nums.next().unwrap().parse::<u16>().unwrap();
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let cx = nums.next().unwrap().parse::<u16>().unwrap();
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let cy = nums.next().unwrap().parse::<u16>().unwrap();
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let event = match cb {
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0...2 | 64...65 => {
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let button = match cb {
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0 => MouseButton::Left,
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1 => MouseButton::Middle,
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2 => MouseButton::Right,
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64 => MouseButton::WheelUp,
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65 => MouseButton::WheelDown,
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_ => unreachable!(),
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};
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match c {
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b'M' => MouseEvent::Press(button, cx, cy),
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b'm' => MouseEvent::Release(cx, cy),
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_ => return None,
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}
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}
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32 => MouseEvent::Hold(cx, cy),
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_ => return None,
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};
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Event::Mouse(event)
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}
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Some(Ok(c @ b'0'...b'9')) => {
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// Numbered escape code.
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let mut buf = Vec::new();
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buf.push(c);
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let mut c = iter.next().unwrap().unwrap();
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// The final byte of a CSI sequence can be in the range 64-126, so
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// let's keep reading anything else.
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while c < 64 || c > 126 {
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buf.push(c);
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c = iter.next().unwrap().unwrap();
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}
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match c {
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// rxvt mouse encoding:
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// ESC [ Cb ; Cx ; Cy ; M
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b'M' => {
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let str_buf = String::from_utf8(buf).unwrap();
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let nums: Vec<u16> = str_buf
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.split(';')
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.map(|n| n.parse().unwrap())
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.collect();
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let cb = nums[0];
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let cx = nums[1];
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let cy = nums[2];
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let event = match cb {
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32 => MouseEvent::Press(MouseButton::Left, cx, cy),
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33 => MouseEvent::Press(MouseButton::Middle, cx, cy),
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34 => MouseEvent::Press(MouseButton::Right, cx, cy),
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35 => MouseEvent::Release(cx, cy),
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64 => MouseEvent::Hold(cx, cy),
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96 | 97 => MouseEvent::Press(MouseButton::WheelUp, cx, cy),
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_ => return None,
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};
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Event::Mouse(event)
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}
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// Special key code.
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b'~' => {
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let str_buf = String::from_utf8(buf).unwrap();
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// This CSI sequence can be a list of semicolon-separated
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// numbers.
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let nums: Vec<u8> = str_buf
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.split(';')
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.map(|n| n.parse().unwrap())
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.collect();
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if nums.is_empty() {
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return None;
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}
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// TODO: handle multiple values for key modififiers (ex: values
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// [3, 2] means Shift+Delete)
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if nums.len() > 1 {
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return None;
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}
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match nums[0] {
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1 | 7 => Event::Key(Key::Home),
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2 => Event::Key(Key::Insert),
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3 => Event::Key(Key::Delete),
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4 | 8 => Event::Key(Key::End),
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5 => Event::Key(Key::PageUp),
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6 => Event::Key(Key::PageDown),
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v @ 11...15 => Event::Key(Key::F(v - 10)),
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v @ 17...21 => Event::Key(Key::F(v - 11)),
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v @ 23...24 => Event::Key(Key::F(v - 12)),
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_ => return None,
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}
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}
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_ => return None,
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}
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}
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_ => return None,
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})
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}
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/// Parse `c` as either a single byte ASCII char or a variable size UTF-8 char.
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fn parse_utf8_char<I>(c: u8, iter: &mut I) -> Result<char, Error>
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where I: Iterator<Item = Result<u8, Error>> {
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where I: Iterator<Item = Result<u8, Error>>
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{
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let error = Err(Error::new(ErrorKind::Other, "Input character is not valid UTF-8"));
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if c.is_ascii() {
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Ok(c as char)
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@ -311,9 +316,11 @@ fn parse_utf8_char<I>(c: u8, iter: &mut I) -> Result<char, Error>
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loop {
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bytes.push(iter.next().unwrap().unwrap());
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if let Ok(st) = str::from_utf8(bytes) {
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return Ok(st.chars().next().unwrap())
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return Ok(st.chars().next().unwrap());
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}
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if bytes.len() >= 4 {
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return error;
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}
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if bytes.len() >= 4 { return error; }
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}
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}
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}
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83
src/input.rs
83
src/input.rs
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@ -3,7 +3,7 @@
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use std::io::{self, Read, Write};
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use std::ops;
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use event::{parse_event, Event, Key};
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use event::{self, Event, Key};
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use raw::IntoRawMode;
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/// An iterator over input keys.
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@ -41,7 +41,7 @@ impl<R: Read> Iterator for Events<R> {
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if let Some(c) = self.leftover {
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// we have a leftover byte, use it
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self.leftover = None;
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return Some(parse_event(Ok(c), &mut source.bytes()).or(Ok(Event::Unsupported)));
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return Some(parse_event(c, &mut source.bytes()));
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}
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// Here we read two bytes at a time. We need to distinguish between single ESC key presses,
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@ -51,15 +51,17 @@ impl<R: Read> Iterator for Events<R> {
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let mut buf = [0u8; 2];
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let res = match source.read(&mut buf) {
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Ok(0) => return None,
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Ok(1) => match buf[0] {
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b'\x1B' => Ok(Event::Key(Key::Esc)),
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c => parse_event(Ok(c), &mut source.bytes()),
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},
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Ok(1) => {
|
||||
match buf[0] {
|
||||
b'\x1B' => Ok(Event::Key(Key::Esc)),
|
||||
c => parse_event(c, &mut source.bytes()),
|
||||
}
|
||||
}
|
||||
Ok(2) => {
|
||||
let mut option_iter = &mut Some(buf[1]).into_iter();
|
||||
let result = {
|
||||
let mut iter = option_iter.map(|c| Ok(c)).chain(source.bytes());
|
||||
parse_event(Ok(buf[0]), &mut iter)
|
||||
parse_event(buf[0], &mut iter)
|
||||
};
|
||||
// If the option_iter wasn't consumed, keep the byte for later.
|
||||
self.leftover = option_iter.next();
|
||||
|
@ -69,10 +71,24 @@ impl<R: Read> Iterator for Events<R> {
|
|||
Err(e) => Err(e),
|
||||
};
|
||||
|
||||
Some(res.or(Ok(Event::Unsupported)))
|
||||
Some(res)
|
||||
}
|
||||
}
|
||||
|
||||
fn parse_event<I>(item: u8, iter: &mut I) -> Result<Event, io::Error>
|
||||
where I: Iterator<Item = Result<u8, io::Error>>
|
||||
{
|
||||
let mut buf = vec![item];
|
||||
let result = {
|
||||
let mut iter = iter.inspect(|byte| if let &Ok(byte) = byte {
|
||||
buf.push(byte);
|
||||
});
|
||||
event::parse_event(item, &mut iter)
|
||||
};
|
||||
result.or(Ok(Event::Unsupported(buf)))
|
||||
}
|
||||
|
||||
|
||||
/// Extension to `Read` trait.
|
||||
pub trait TermRead {
|
||||
/// An iterator over input events.
|
||||
|
@ -105,9 +121,7 @@ impl<R: Read> TermRead for R {
|
|||
}
|
||||
}
|
||||
fn keys(self) -> Keys<Self> {
|
||||
Keys {
|
||||
iter: self.events(),
|
||||
}
|
||||
Keys { iter: self.events() }
|
||||
}
|
||||
|
||||
fn read_line(&mut self) -> io::Result<Option<String>> {
|
||||
|
@ -117,13 +131,16 @@ impl<R: Read> TermRead for R {
|
|||
match c {
|
||||
Err(e) => return Err(e),
|
||||
Ok(0) | Ok(3) | Ok(4) => return Ok(None),
|
||||
Ok(0x7f) => { buf.pop(); },
|
||||
Ok(0x7f) => {
|
||||
buf.pop();
|
||||
}
|
||||
Ok(b'\n') | Ok(b'\r') => break,
|
||||
Ok(c) => buf.push(c),
|
||||
}
|
||||
}
|
||||
|
||||
let string = try!(String::from_utf8(buf).map_err(|e| io::Error::new(io::ErrorKind::InvalidData, e)));
|
||||
let string = try!(String::from_utf8(buf)
|
||||
.map_err(|e| io::Error::new(io::ErrorKind::InvalidData, e)));
|
||||
Ok(Some(string))
|
||||
}
|
||||
}
|
||||
|
@ -200,18 +217,25 @@ mod test {
|
|||
#[test]
|
||||
fn test_events() {
|
||||
let mut i = b"\x1B[\x00bc\x7F\x1B[D\
|
||||
\x1B[M\x00\x22\x24\x1B[<0;2;4;M\x1B[32;2;4M\x1B[<0;2;4;m\x1B[35;2;4Mb".events();
|
||||
\x1B[M\x00\x22\x24\x1B[<0;2;4;M\x1B[32;2;4M\x1B[<0;2;4;m\x1B[35;2;4Mb"
|
||||
.events();
|
||||
|
||||
assert_eq!(i.next().unwrap().unwrap(), Event::Unsupported);
|
||||
assert_eq!(i.next().unwrap().unwrap(),
|
||||
Event::Unsupported(vec![0x1B, b'[', 0x00]));
|
||||
assert_eq!(i.next().unwrap().unwrap(), Event::Key(Key::Char('b')));
|
||||
assert_eq!(i.next().unwrap().unwrap(), Event::Key(Key::Char('c')));
|
||||
assert_eq!(i.next().unwrap().unwrap(), Event::Key(Key::Backspace));
|
||||
assert_eq!(i.next().unwrap().unwrap(), Event::Key(Key::Left));
|
||||
assert_eq!(i.next().unwrap().unwrap(), Event::Mouse(MouseEvent::Press(MouseButton::WheelUp, 2, 4)));
|
||||
assert_eq!(i.next().unwrap().unwrap(), Event::Mouse(MouseEvent::Press(MouseButton::Left, 2, 4)));
|
||||
assert_eq!(i.next().unwrap().unwrap(), Event::Mouse(MouseEvent::Press(MouseButton::Left, 2, 4)));
|
||||
assert_eq!(i.next().unwrap().unwrap(), Event::Mouse(MouseEvent::Release(2, 4)));
|
||||
assert_eq!(i.next().unwrap().unwrap(), Event::Mouse(MouseEvent::Release(2, 4)));
|
||||
assert_eq!(i.next().unwrap().unwrap(),
|
||||
Event::Mouse(MouseEvent::Press(MouseButton::WheelUp, 2, 4)));
|
||||
assert_eq!(i.next().unwrap().unwrap(),
|
||||
Event::Mouse(MouseEvent::Press(MouseButton::Left, 2, 4)));
|
||||
assert_eq!(i.next().unwrap().unwrap(),
|
||||
Event::Mouse(MouseEvent::Press(MouseButton::Left, 2, 4)));
|
||||
assert_eq!(i.next().unwrap().unwrap(),
|
||||
Event::Mouse(MouseEvent::Release(2, 4)));
|
||||
assert_eq!(i.next().unwrap().unwrap(),
|
||||
Event::Mouse(MouseEvent::Release(2, 4)));
|
||||
assert_eq!(i.next().unwrap().unwrap(), Event::Key(Key::Char('b')));
|
||||
assert!(i.next().is_none());
|
||||
}
|
||||
|
@ -219,13 +243,14 @@ mod test {
|
|||
#[test]
|
||||
fn test_function_keys() {
|
||||
let mut st = b"\x1BOP\x1BOQ\x1BOR\x1BOS".keys();
|
||||
for i in 1 .. 5 {
|
||||
for i in 1..5 {
|
||||
assert_eq!(st.next().unwrap().unwrap(), Key::F(i));
|
||||
}
|
||||
|
||||
let mut st = b"\x1B[11~\x1B[12~\x1B[13~\x1B[14~\x1B[15~\
|
||||
\x1B[17~\x1B[18~\x1B[19~\x1B[20~\x1B[21~\x1B[23~\x1B[24~".keys();
|
||||
for i in 1 .. 13 {
|
||||
\x1B[17~\x1B[18~\x1B[19~\x1B[20~\x1B[21~\x1B[23~\x1B[24~"
|
||||
.keys();
|
||||
for i in 1..13 {
|
||||
assert_eq!(st.next().unwrap().unwrap(), Key::F(i));
|
||||
}
|
||||
}
|
||||
|
@ -279,14 +304,18 @@ mod test {
|
|||
|
||||
#[test]
|
||||
fn test_backspace() {
|
||||
line_match("this is the\x7f first\x7f\x7f test", Some("this is th fir test"));
|
||||
line_match("this is the seco\x7fnd test\x7f", Some("this is the secnd tes"));
|
||||
line_match("this is the\x7f first\x7f\x7f test",
|
||||
Some("this is th fir test"));
|
||||
line_match("this is the seco\x7fnd test\x7f",
|
||||
Some("this is the secnd tes"));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_end() {
|
||||
line_match("abc\nhttps://www.youtube.com/watch?v=dQw4w9WgXcQ", Some("abc"));
|
||||
line_match("hello\rhttps://www.youtube.com/watch?v=yPYZpwSpKmA", Some("hello"));
|
||||
line_match("abc\nhttps://www.youtube.com/watch?v=dQw4w9WgXcQ",
|
||||
Some("abc"));
|
||||
line_match("hello\rhttps://www.youtube.com/watch?v=yPYZpwSpKmA",
|
||||
Some("hello"));
|
||||
}
|
||||
|
||||
#[test]
|
||||
|
|
Loading…
Reference in New Issue