terminal_keycode/
lib.rs

1#![doc=include_str!("../readme.md")]
2
3#[derive(Debug,Clone,PartialEq)]
4pub enum KeyCode {
5  ArrowUp, ArrowDown, ArrowLeft, ArrowRight,
6  CtrlArrowUp, CtrlArrowDown, CtrlArrowLeft, CtrlArrowRight,
7  ShiftArrowUp, ShiftArrowDown, ShiftArrowLeft, ShiftArrowRight,
8  CtrlShiftArrowUp, CtrlShiftArrowDown, CtrlShiftArrowLeft, CtrlShiftArrowRight,
9  Numpad5, CtrlNumpad5,
10  Delete, Insert, Home, End, PageUp, PageDown,
11  CtrlDelete, CtrlInsert, CtrlHome, CtrlEnd, CtrlPageUp, CtrlPageDown,
12  ShiftDelete, ShiftInsert, ShiftHome, ShiftEnd, ShiftPageUp, ShiftPageDown,
13  CtrlShiftDelete, CtrlShiftInsert, CtrlShiftHome, CtrlShiftEnd, CtrlShiftPageUp, CtrlShiftPageDown,
14  F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12,
15  CtrlF1, CtrlF2, CtrlF3, CtrlF4, CtrlF5, CtrlF6, CtrlF7, CtrlF8, CtrlF9, CtrlF10, CtrlF11, CtrlF12,
16  ShiftF1, ShiftF2, ShiftF3, ShiftF4, ShiftF5, ShiftF6, ShiftF7, ShiftF8, ShiftF9, ShiftF10, ShiftF11, ShiftF12,
17  CtrlShiftF1, CtrlShiftF2, CtrlShiftF3, CtrlShiftF4, CtrlShiftF5, CtrlShiftF6,
18  CtrlShiftF7, CtrlShiftF8, CtrlShiftF9, CtrlShiftF10, CtrlShiftF11, CtrlShiftF12,
19  CtrlA, CtrlB, CtrlC, CtrlD, CtrlE, CtrlF, CtrlG, CtrlH,
20  Tab, ShiftTab, Linefeed, CtrlK, CtrlL, Enter,
21  CtrlN, CtrlO, CtrlP, CtrlQ, CtrlR, CtrlS, CtrlT, CtrlU, CtrlV, CtrlW, CtrlX, CtrlY, CtrlZ,
22  Space, Backspace, Escape, Menu, CtrlMenu, ShiftMenu, CtrlShiftMenu,
23  Char(char),
24  Byte(u8),
25}
26
27impl KeyCode {
28  /// KeyCodes are printable if they have a visible representation as a character, including
29  /// whitespace.
30  pub fn printable(&self) -> Option<char> {
31    match self {
32      Self::Char(c) => Some(*c),
33      Self::Space => Some(' '),
34      Self::Enter => Some('\r'),
35      Self::Linefeed => Some('\n'),
36      Self::Tab => Some('\t'),
37      _ => None,
38    }
39  }
40  /// Return the terminal byte sequences for a given KeyCode.
41  pub fn bytes(&self) -> Vec<u8> {
42    match self {
43      Self::ArrowUp => vec![0x1b,0x5b,0x41],
44      Self::ArrowDown => vec![0x1b,0x5b,0x42],
45      Self::ArrowRight => vec![0x1b,0x5b,0x43],
46      Self::ArrowLeft => vec![0x1b,0x5b,0x44],
47      Self::CtrlArrowUp => vec![0x1b,0x5b,0x31,0x3b,0x35,0x41],
48      Self::CtrlArrowDown => vec![0x1b,0x5b,0x31,0x3b,0x35,0x42],
49      Self::CtrlArrowRight => vec![0x1b,0x5b,0x31,0x3b,0x35,0x43],
50      Self::CtrlArrowLeft => vec![0x1b,0x5b,0x31,0x3b,0x35,0x44],
51      Self::ShiftArrowUp => vec![0x1b,0x5b,0x31,0x3b,0x32,0x41],
52      Self::ShiftArrowDown => vec![0x1b,0x5b,0x31,0x3b,0x32,0x42],
53      Self::ShiftArrowRight => vec![0x1b,0x5b,0x31,0x3b,0x32,0x43],
54      Self::ShiftArrowLeft => vec![0x1b,0x5b,0x31,0x3b,0x32,0x44],
55      Self::CtrlShiftArrowUp => vec![0x1b,0x5b,0x31,0x3b,0x36,0x41],
56      Self::CtrlShiftArrowDown => vec![0x1b,0x5b,0x31,0x3b,0x36,0x42],
57      Self::CtrlShiftArrowRight => vec![0x1b,0x5b,0x31,0x3b,0x36,0x43],
58      Self::CtrlShiftArrowLeft => vec![0x1b,0x5b,0x31,0x3b,0x36,0x44],
59      Self::Numpad5 => vec![0x1b,0x5b,0x45],
60      Self::CtrlNumpad5 => vec![0x1b,0x5b,0x31,0x3b,0x35,0x45],
61      Self::Delete => vec![0x1b,0x5b,0x33,0x7e],
62      Self::Insert => vec![0x1b,0x5b,0x32,0x7e],
63      Self::Home => vec![0x1b,0x5b,0x48],
64      Self::End => vec![0x1b,0x5b,0x46],
65      Self::PageUp => vec![0x1b,0x5b,0x35,0x7e],
66      Self::PageDown => vec![0x1b,0x5b,0x36,0x7e],
67      Self::CtrlDelete => vec![0x1b,0x5b,0x33,0x3b,0x35,0x7e],
68      Self::CtrlInsert => vec![0x1b,0x5b,0x32,0x3b,0x35,0x7e],
69      Self::CtrlHome => vec![0x1b,0x5b,0x31,0x3b,0x35,0x48],
70      Self::CtrlEnd => vec![0x1b,0x5b,0x31,0x3b,0x35,0x46],
71      Self::CtrlPageUp => vec![0x1b,0x5b,0x35,0x3b,0x35,0x7e],
72      Self::CtrlPageDown => vec![0x1b,0x5b,0x36,0x3b,0x35,0x7e],
73      Self::ShiftDelete => vec![0x1b,0x5b,0x33,0x3b,0x32,0x7e],
74      Self::ShiftInsert => vec![0x1b,0x5b,0x32,0x3b,0x32,0x7e], // unconfirmed
75      Self::ShiftHome => vec![0x1b,0x5b,0x31,0x3b,0x32,0x48],
76      Self::ShiftEnd => vec![0x1b,0x5b,0x31,0x3b,0x32,0x46],
77      Self::ShiftPageUp => vec![0x1b,0x5b,0x35,0x3b,0x32,0x7e], // unconfirmed
78      Self::ShiftPageDown => vec![0x1b,0x5b,0x36,0x3b,0x32,0x7e], // unconfirmed
79      Self::CtrlShiftDelete => vec![0x1b,0x5b,0x33,0x3b,0x36,0x7e],
80      Self::CtrlShiftInsert => vec![0x1b,0x5b,0x32,0x3b,0x36,0x7e], // unconfirmed
81      Self::CtrlShiftHome => vec![0x1b,0x5b,0x31,0x3b,0x36,0x48],
82      Self::CtrlShiftEnd => vec![0x1b,0x5b,0x31,0x3b,0x36,0x46],
83      Self::CtrlShiftPageUp => vec![0x1b,0x5b,0x35,0x3b,0x36,0x7e], // unconfirmed
84      Self::CtrlShiftPageDown => vec![0x1b,0x5b,0x36,0x3b,0x36,0x7e], // unconfirmed
85      Self::Escape => vec![0x1b],
86      Self::F1 => vec![0x1b,0x4f,0x50],
87      Self::F2 => vec![0x1b,0x4f,0x51],
88      Self::F3 => vec![0x1b,0x4f,0x52],
89      Self::F4 => vec![0x1b,0x4f,0x53],
90      Self::F5 => vec![0x1b,0x5b,0x31,0x35,0x7e],
91      Self::F6 => vec![0x1b,0x5b,0x31,0x37,0x7e],
92      Self::F7 => vec![0x1b,0x5b,0x31,0x38,0x7e],
93      Self::F8 => vec![0x1b,0x5b,0x31,0x39,0x7e],
94      Self::F9 => vec![0x1b,0x5b,0x32,0x30,0x7e],
95      Self::F10 => vec![0x1b,0x5b,0x32,0x31,0x7e],
96      Self::F11 => vec![0x1b,0x5b,0x32,0x33,0x7e],
97      Self::F12 => vec![0x1b,0x5b,0x32,0x34,0x7e],
98      Self::CtrlF1 => vec![0x1b,0x5b,0x31,0x3b,0x35,0x50],
99      Self::CtrlF2 => vec![0x1b,0x5b,0x31,0x3b,0x35,0x51],
100      Self::CtrlF3 => vec![0x1b,0x5b,0x31,0x3b,0x35,0x52],
101      Self::CtrlF4 => vec![0x1b,0x5b,0x31,0x3b,0x35,0x53],
102      Self::CtrlF5 => vec![0x1b,0x5b,0x31,0x35,0x3b,0x35,0x7e],
103      Self::CtrlF6 => vec![0x1b,0x5b,0x31,0x37,0x3b,0x35,0x7e],
104      Self::CtrlF7 => vec![0x1b,0x5b,0x31,0x38,0x3b,0x35,0x7e],
105      Self::CtrlF8 => vec![0x1b,0x5b,0x31,0x39,0x3b,0x35,0x7e],
106      Self::CtrlF9 => vec![0x1b,0x5b,0x32,0x30,0x3b,0x35,0x7e],
107      Self::CtrlF10 => vec![0x1b,0x5b,0x32,0x31,0x3b,0x35,0x7e],
108      Self::CtrlF11 => vec![0x1b,0x5b,0x32,0x33,0x3b,0x35,0x7e],
109      Self::CtrlF12 => vec![0x1b,0x5b,0x32,0x34,0x3b,0x35,0x7e],
110      Self::ShiftF1 => vec![0x1b,0x5b,0x31,0x3b,0x32,0x50],
111      Self::ShiftF2 => vec![0x1b,0x5b,0x31,0x3b,0x32,0x51],
112      Self::ShiftF3 => vec![0x1b,0x5b,0x31,0x3b,0x32,0x52],
113      Self::ShiftF4 => vec![0x1b,0x5b,0x31,0x3b,0x32,0x53],
114      Self::ShiftF5 => vec![0x1b,0x5b,0x31,0x35,0x3b,0x32,0x7e],
115      Self::ShiftF6 => vec![0x1b,0x5b,0x31,0x37,0x3b,0x32,0x7e],
116      Self::ShiftF7 => vec![0x1b,0x5b,0x31,0x38,0x3b,0x32,0x7e],
117      Self::ShiftF8 => vec![0x1b,0x5b,0x31,0x39,0x3b,0x32,0x7e],
118      Self::ShiftF9 => vec![0x1b,0x5b,0x32,0x30,0x3b,0x32,0x7e],
119      Self::ShiftF10 => vec![0x1b,0x5b,0x32,0x31,0x3b,0x32,0x7e],
120      Self::ShiftF11 => vec![0x1b,0x5b,0x32,0x33,0x3b,0x32,0x7e],
121      Self::ShiftF12 => vec![0x1b,0x5b,0x32,0x34,0x3b,0x32,0x7e],
122      Self::CtrlShiftF1 => vec![0x1b,0x5b,0x31,0x3b,0x36,0x50],
123      Self::CtrlShiftF2 => vec![0x1b,0x5b,0x31,0x3b,0x36,0x51],
124      Self::CtrlShiftF3 => vec![0x1b,0x5b,0x31,0x3b,0x36,0x52],
125      Self::CtrlShiftF4 => vec![0x1b,0x5b,0x31,0x3b,0x36,0x53],
126      Self::CtrlShiftF5 => vec![0x1b,0x5b,0x31,0x35,0x3b,0x36,0x7e],
127      Self::CtrlShiftF6 => vec![0x1b,0x5b,0x31,0x37,0x3b,0x36,0x7e],
128      Self::CtrlShiftF7 => vec![0x1b,0x5b,0x31,0x38,0x3b,0x36,0x7e],
129      Self::CtrlShiftF8 => vec![0x1b,0x5b,0x31,0x39,0x3b,0x36,0x7e],
130      Self::CtrlShiftF9 => vec![0x1b,0x5b,0x32,0x30,0x3b,0x36,0x7e],
131      Self::CtrlShiftF10 => vec![0x1b,0x5b,0x32,0x31,0x3b,0x36,0x7e],
132      Self::CtrlShiftF11 => vec![0x1b,0x5b,0x32,0x33,0x3b,0x36,0x7e],
133      Self::CtrlShiftF12 => vec![0x1b,0x5b,0x32,0x34,0x3b,0x36,0x7e],
134      Self::CtrlA => vec![0x01],
135      Self::CtrlB => vec![0x02],
136      Self::CtrlC => vec![0x03],
137      Self::CtrlD => vec![0x04],
138      Self::CtrlE => vec![0x05],
139      Self::CtrlF => vec![0x06],
140      Self::CtrlG => vec![0x07],
141      Self::CtrlH => vec![0x08],
142      Self::Tab => vec![0x09],
143      Self::ShiftTab => vec![0x1b,0x5b,0x5a], // or sometimes 0x1b 0x09
144      Self::Linefeed => vec![0x0a],
145      Self::CtrlK => vec![0x0b],
146      Self::CtrlL => vec![0x0c],
147      Self::Enter => vec![0x0d],
148      Self::CtrlN => vec![0x0e],
149      Self::CtrlO => vec![0x0f],
150      Self::CtrlP => vec![0x10],
151      Self::CtrlQ => vec![0x11],
152      Self::CtrlR => vec![0x12],
153      Self::CtrlS => vec![0x13],
154      Self::CtrlT => vec![0x14],
155      Self::CtrlU => vec![0x15],
156      Self::CtrlV => vec![0x16],
157      Self::CtrlW => vec![0x17],
158      Self::CtrlX => vec![0x18],
159      Self::CtrlY => vec![0x19],
160      Self::CtrlZ => vec![0x1a],
161      Self::Space => vec![0x20],
162      Self::Backspace => vec![0x7f],
163      Self::Menu => vec![0x1b,0x5b,0x32,0x39,0x7e],
164      Self::CtrlMenu => vec![0x1b,0x5b,0x32,0x39,0x3b,0x35,0x7e],
165      Self::ShiftMenu => vec![0x1b,0x5b,0x32,0x39,0x3b,0x32,0x7e],
166      Self::CtrlShiftMenu => vec![0x1b,0x5b,0x32,0x39,0x3b,0x36,0x7e],
167      Self::Char(c) => char_bytes(*c),
168      Self::Byte(b) => vec![*b],
169    }
170  }
171}
172
173pub struct Decoder {
174  index: usize,
175  seq: [Option<u8>;7],
176  lookahead: usize,
177}
178
179impl Default for Decoder {
180  fn default() -> Self {
181    Self {
182      index: 0,
183      seq: [None,None,None,None,None,None,None],
184      lookahead: 0,
185    }
186  }
187}
188
189impl Decoder {
190  pub fn new() -> Self {
191    Self::default()
192  }
193  /// Write a single byte, generating zero or more key codes based on internal buffering and
194  /// internal decoding states.
195  pub fn write(&mut self, b: u8) -> Vec<KeyCode> {
196    self.seq[self.index] = Some(b);
197    self.index += 1;
198    if self.lookahead > 0 {
199      if (b >> 6) != 0b10 {
200        let res = match self.seq {
201          [Some(x0),Some(x1),None,None,None,None,None] => vec![
202            KeyCode::Byte(x0),KeyCode::Byte(x1)
203          ],
204          [Some(x0),Some(x1),Some(x2),None,None,None,None] => vec![
205            KeyCode::Byte(x0),KeyCode::Byte(x1),KeyCode::Byte(x2)
206          ],
207          [Some(x0),Some(x1),Some(x2),Some(x3),None,None,None] => vec![
208            KeyCode::Byte(x0),KeyCode::Byte(x1),KeyCode::Byte(x2),KeyCode::Byte(x3)
209          ],
210          _ => panic!["unexpected keycode state"],
211        };
212        self.clear();
213        return res;
214      }
215      let r = match (self.lookahead,self.seq) {
216        (1,[Some(x0),Some(x1),None,None,None,None,None]) => {
217          Some(char::from_u32(
218            ((x0 as u32 & 0b00111111) << 6) | (x1 as u32 & 0b00111111)
219          ).unwrap())
220        },
221        (2,[Some(x0),Some(x1),Some(x2),None,None,None,None]) => {
222          Some(char::from_u32(
223            ((x0 as u32 & 0b00011111) << 12) | ((x1 as u32 & 0b00111111) << 6)
224            | (x2 as u32 & 0b00111111)
225          ).unwrap())
226        },
227        (3,[Some(x0),Some(x1),Some(x2),Some(x3),None,None,None]) => {
228          Some(char::from_u32(
229            ((x0 as u32 & 0b00001111) << 18) | ((x1 as u32 & 0b00111111) << 12)
230            | ((x2 as u32 & 0b00111111) << 6) | (x3 as u32 & 0b00111111)
231          ).unwrap())
232        },
233        _ => None,
234      };
235      if let Some(c) = r {
236        self.clear();
237        return vec![KeyCode::Char(c)];
238      } else {
239        return vec![];
240      }
241    }
242    let res = match self.seq {
243      [Some(0x1b),None,None,None,None,None,None]
244      | [Some(0x1b),Some(0x5b),None,None,None,None,None]
245      | [Some(0x1b),Some(0x4f),None,None,None,None,None]
246      | [Some(0x1b),Some(0x5b),Some(0x33|0x35|0x36),None|Some(0x3b),None,None,None]
247      | [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),None|Some(0x32|0x35|0x36),None,None]
248      | [Some(0x1b),Some(0x5b),Some(0x31),None|Some(0x35|0x37|0x38|0x39),None,None,None]
249      | [Some(0x1b),Some(0x5b),Some(0x31),Some(0x35|0x37|0x38|0x39),Some(0x3b),None|Some(0x32|0x35|0x36),None]
250      | [Some(0x1b),Some(0x5b),Some(0x32|0x33|0x34|0x35|0x36),Some(0x3b),None|Some(0x32|0x35|0x36),None,None]
251      | [Some(0x1b),Some(0x5b),Some(0x32),None|Some(0x30|0x31|0x33|0x34|0x39),None,None,None]
252      | [Some(0x1b),Some(0x5b),Some(0x32),Some(0x30|0x31|0x33|0x34|0x39),Some(0x3b),None|Some(0x32|0x35|0x36),None] => {
253        vec![]
254      },
255      [Some(0x1b),Some(0x5b),Some(0x41),None,None,None,None] => vec![KeyCode::ArrowUp],
256      [Some(0x1b),Some(0x5b),Some(0x42),None,None,None,None] => vec![KeyCode::ArrowDown],
257      [Some(0x1b),Some(0x5b),Some(0x43),None,None,None,None] => vec![KeyCode::ArrowRight],
258      [Some(0x1b),Some(0x5b),Some(0x44),None,None,None,None] => vec![KeyCode::ArrowLeft],
259      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x35),Some(0x41),None] => vec![KeyCode::CtrlArrowUp],
260      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x35),Some(0x42),None] => vec![KeyCode::CtrlArrowDown],
261      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x35),Some(0x43),None] => vec![KeyCode::CtrlArrowRight],
262      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x35),Some(0x44),None] => vec![KeyCode::CtrlArrowLeft],
263      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x35),Some(0x45),None] => vec![KeyCode::CtrlNumpad5],
264      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x32),Some(0x41),None] => vec![KeyCode::ShiftArrowUp],
265      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x32),Some(0x42),None] => vec![KeyCode::ShiftArrowDown],
266      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x32),Some(0x43),None] => vec![KeyCode::ShiftArrowRight],
267      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x32),Some(0x44),None] => vec![KeyCode::ShiftArrowLeft],
268      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x36),Some(0x41),None] => vec![KeyCode::CtrlShiftArrowUp],
269      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x36),Some(0x42),None] => vec![KeyCode::CtrlShiftArrowDown],
270      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x36),Some(0x43),None] => vec![KeyCode::CtrlShiftArrowRight],
271      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x36),Some(0x44),None] => vec![KeyCode::CtrlShiftArrowLeft],
272      [Some(0x1b),Some(0x5b),Some(0x45),None,None,None,None] => vec![KeyCode::Numpad5],
273      [Some(0x1b),Some(0x5b),Some(0x33),Some(0x7e),None,None,None] => vec![KeyCode::Delete],
274      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x7e),None,None,None] => vec![KeyCode::Insert],
275      [Some(0x1b),Some(0x5b),Some(0x48),None,None,None,None] => vec![KeyCode::Home],
276      [Some(0x1b),Some(0x5b),Some(0x46),None,None,None,None] => vec![KeyCode::End],
277      [Some(0x1b),Some(0x5b),Some(0x5a),None,None,None,None] => vec![KeyCode::ShiftTab],
278      [Some(0x1b),Some(0x5b),Some(0x35),Some(0x7e),None,None,None] => vec![KeyCode::PageUp],
279      [Some(0x1b),Some(0x5b),Some(0x36),Some(0x7e),None,None,None] => vec![KeyCode::PageDown],
280      [Some(0x1b),Some(0x5b),Some(0x33),Some(0x3b),Some(0x35),Some(0x7e),None] => vec![KeyCode::CtrlDelete],
281      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x3b),Some(0x35),Some(0x7e),None] => vec![KeyCode::CtrlInsert],
282      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x35),Some(0x48),None] => vec![KeyCode::CtrlHome],
283      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x35),Some(0x46),None] => vec![KeyCode::CtrlEnd],
284      [Some(0x1b),Some(0x5b),Some(0x35),Some(0x3b),Some(0x35),Some(0x7e),None] => vec![KeyCode::CtrlPageUp],
285      [Some(0x1b),Some(0x5b),Some(0x36),Some(0x3b),Some(0x35),Some(0x7e),None] => vec![KeyCode::CtrlPageDown],
286      [Some(0x1b),Some(0x5b),Some(0x33),Some(0x3b),Some(0x32),Some(0x7e),None] => vec![KeyCode::ShiftDelete],
287      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x3b),Some(0x32),Some(0x7e),None] => vec![KeyCode::ShiftInsert],
288      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x32),Some(0x48),None] => vec![KeyCode::ShiftHome],
289      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x32),Some(0x46),None] => vec![KeyCode::ShiftEnd],
290      [Some(0x1b),Some(0x5b),Some(0x35),Some(0x3b),Some(0x32),Some(0x7e),None] => vec![KeyCode::ShiftPageUp],
291      [Some(0x1b),Some(0x5b),Some(0x36),Some(0x3b),Some(0x32),Some(0x7e),None] => vec![KeyCode::ShiftPageDown],
292      [Some(0x1b),Some(0x5b),Some(0x33),Some(0x3b),Some(0x36),Some(0x7e),None] => vec![KeyCode::CtrlShiftDelete],
293      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x3b),Some(0x36),Some(0x7e),None] => vec![KeyCode::CtrlShiftInsert],
294      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x36),Some(0x48),None] => vec![KeyCode::CtrlShiftHome],
295      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x36),Some(0x46),None] => vec![KeyCode::CtrlShiftEnd],
296      [Some(0x1b),Some(0x5b),Some(0x35),Some(0x3b),Some(0x36),Some(0x7e),None] => vec![KeyCode::CtrlShiftPageUp],
297      [Some(0x1b),Some(0x5b),Some(0x36),Some(0x3b),Some(0x36),Some(0x7e),None] => vec![KeyCode::CtrlShiftPageDown],
298      [Some(0x1b),Some(0x4f),Some(0x50),None,None,None,None] => vec![KeyCode::F1],
299      [Some(0x1b),Some(0x4f),Some(0x51),None,None,None,None] => vec![KeyCode::F2],
300      [Some(0x1b),Some(0x4f),Some(0x52),None,None,None,None] => vec![KeyCode::F3],
301      [Some(0x1b),Some(0x4f),Some(0x53),None,None,None,None] => vec![KeyCode::F4],
302      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x35),Some(0x7e),None,None] => vec![KeyCode::F5],
303      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x37),Some(0x7e),None,None] => vec![KeyCode::F6],
304      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x38),Some(0x7e),None,None] => vec![KeyCode::F7],
305      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x39),Some(0x7e),None,None] => vec![KeyCode::F8],
306      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x30),Some(0x7e),None,None] => vec![KeyCode::F9],
307      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x31),Some(0x7e),None,None] => vec![KeyCode::F10],
308      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x33),Some(0x7e),None,None] => vec![KeyCode::F11],
309      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x34),Some(0x7e),None,None] => vec![KeyCode::F12],
310      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x35),Some(0x50),None] => vec![KeyCode::CtrlF1],
311      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x35),Some(0x51),None] => vec![KeyCode::CtrlF2],
312      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x35),Some(0x52),None] => vec![KeyCode::CtrlF3],
313      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x35),Some(0x53),None] => vec![KeyCode::CtrlF4],
314      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x35),Some(0x3b),Some(0x35),Some(0x7e)] => vec![KeyCode::CtrlF5],
315      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x37),Some(0x3b),Some(0x35),Some(0x7e)] => vec![KeyCode::CtrlF6],
316      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x38),Some(0x3b),Some(0x35),Some(0x7e)] => vec![KeyCode::CtrlF7],
317      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x39),Some(0x3b),Some(0x35),Some(0x7e)] => vec![KeyCode::CtrlF8],
318      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x30),Some(0x3b),Some(0x35),Some(0x7e)] => vec![KeyCode::CtrlF9],
319      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x31),Some(0x3b),Some(0x35),Some(0x7e)] => vec![KeyCode::CtrlF10],
320      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x33),Some(0x3b),Some(0x35),Some(0x7e)] => vec![KeyCode::CtrlF11],
321      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x34),Some(0x3b),Some(0x35),Some(0x7e)] => vec![KeyCode::CtrlF12],
322      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x32),Some(0x50),None] => vec![KeyCode::ShiftF1],
323      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x32),Some(0x51),None] => vec![KeyCode::ShiftF2],
324      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x32),Some(0x52),None] => vec![KeyCode::ShiftF3],
325      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x32),Some(0x53),None] => vec![KeyCode::ShiftF4],
326      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x35),Some(0x3b),Some(0x32),Some(0x7e)] => vec![KeyCode::ShiftF5],
327      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x37),Some(0x3b),Some(0x32),Some(0x7e)] => vec![KeyCode::ShiftF6],
328      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x38),Some(0x3b),Some(0x32),Some(0x7e)] => vec![KeyCode::ShiftF7],
329      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x39),Some(0x3b),Some(0x32),Some(0x7e)] => vec![KeyCode::ShiftF8],
330      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x30),Some(0x3b),Some(0x32),Some(0x7e)] => vec![KeyCode::ShiftF9],
331      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x31),Some(0x3b),Some(0x32),Some(0x7e)] => vec![KeyCode::ShiftF10],
332      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x33),Some(0x3b),Some(0x32),Some(0x7e)] => vec![KeyCode::ShiftF11],
333      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x34),Some(0x3b),Some(0x32),Some(0x7e)] => vec![KeyCode::ShiftF12],
334      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x36),Some(0x50),None] => vec![KeyCode::CtrlShiftF1],
335      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x36),Some(0x51),None] => vec![KeyCode::CtrlShiftF2],
336      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x36),Some(0x52),None] => vec![KeyCode::CtrlShiftF3],
337      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x3b),Some(0x36),Some(0x53),None] => vec![KeyCode::CtrlShiftF4],
338      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x35),Some(0x3b),Some(0x36),Some(0x7e)] => vec![KeyCode::CtrlShiftF5],
339      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x37),Some(0x3b),Some(0x36),Some(0x7e)] => vec![KeyCode::CtrlShiftF6],
340      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x38),Some(0x3b),Some(0x36),Some(0x7e)] => vec![KeyCode::CtrlShiftF7],
341      [Some(0x1b),Some(0x5b),Some(0x31),Some(0x39),Some(0x3b),Some(0x36),Some(0x7e)] => vec![KeyCode::CtrlShiftF8],
342      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x30),Some(0x3b),Some(0x36),Some(0x7e)] => vec![KeyCode::CtrlShiftF9],
343      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x31),Some(0x3b),Some(0x36),Some(0x7e)] => vec![KeyCode::CtrlShiftF10],
344      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x33),Some(0x3b),Some(0x36),Some(0x7e)] => vec![KeyCode::CtrlShiftF11],
345      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x34),Some(0x3b),Some(0x36),Some(0x7e)] => vec![KeyCode::CtrlShiftF12],
346      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x39),Some(0x7e),None,None] => vec![KeyCode::Menu],
347      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x39),Some(0x3b),Some(0x35),Some(0x7e)] => vec![KeyCode::CtrlMenu],
348      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x39),Some(0x3b),Some(0x32),Some(0x7e)] => vec![KeyCode::ShiftMenu],
349      [Some(0x1b),Some(0x5b),Some(0x32),Some(0x39),Some(0x3b),Some(0x36),Some(0x7e)] => vec![KeyCode::CtrlShiftMenu],
350      _ => self.flush()
351    };
352    if !res.is_empty() && self.lookahead == 0 {
353      self.clear();
354    }
355    res
356  }
357  fn clear(&mut self) {
358    self.lookahead = 0;
359    self.seq = [None,None,None,None,None,None,None];
360    self.index = 0;
361  }
362  fn flush(&mut self) -> Vec<KeyCode> {
363    let (i,x) = self.seq.iter().enumerate().map_while(|(i,ox)| ox.map(|x| (i,x))).last()
364      .expect(&format!["unexpected sequence for flush(): {:?}", &self.seq]);
365    self.lookahead = lookahead(x);
366    let n = if self.lookahead == 0 { i+1 } else { i };
367    let r = self.seq.iter().take(n).map_while(|x| x.map(chr)).collect();
368    if self.lookahead > 0 {
369      self.seq = [Some(x),None,None,None,None,None,None];
370    }
371    r
372  }
373}
374
375fn lookahead(b: u8) -> usize {
376  if b >= 0b11110000 { 3 }
377  else if b >= 0b11100000 { 2 }
378  else if b >= 0b11000000 { 1 }
379  else { 0 }
380}
381
382fn chr(b: u8) -> KeyCode {
383  match b {
384    0x01 => KeyCode::CtrlA,
385    0x02 => KeyCode::CtrlB,
386    0x03 => KeyCode::CtrlC,
387    0x04 => KeyCode::CtrlD,
388    0x05 => KeyCode::CtrlE,
389    0x06 => KeyCode::CtrlF,
390    0x07 => KeyCode::CtrlG,
391    0x08 => KeyCode::CtrlH,
392    0x09 => KeyCode::Tab,
393    0x0a => KeyCode::Linefeed, // CtrlJ
394    0x0b => KeyCode::CtrlK,
395    0x0c => KeyCode::CtrlL,
396    0x0d => KeyCode::Enter, // CtrlM
397    0x0e => KeyCode::CtrlN,
398    0x0f => KeyCode::CtrlO,
399    0x10 => KeyCode::CtrlP,
400    0x11 => KeyCode::CtrlQ,
401    0x12 => KeyCode::CtrlR,
402    0x13 => KeyCode::CtrlS,
403    0x14 => KeyCode::CtrlT,
404    0x15 => KeyCode::CtrlU,
405    0x16 => KeyCode::CtrlV,
406    0x17 => KeyCode::CtrlW,
407    0x18 => KeyCode::CtrlX, // cancel
408    0x19 => KeyCode::CtrlY,
409    0x1a => KeyCode::CtrlZ, // substitute
410    0x1b => KeyCode::Escape,
411    0x20 => KeyCode::Space,
412    0x7f => KeyCode::Backspace,
413    c => {
414      if c < 0b11000000 { KeyCode::Char(char::from(c)) }
415      else { KeyCode::Byte(c) }
416    },
417  }
418}
419
420fn char_bytes(c: char) -> Vec<u8> {
421  let mut buf = [0u8;4];
422  let n = c.encode_utf8(&mut buf).len();
423  buf[0..n].to_vec()
424}
terminal_keycode/lib.rs

terminal_keycode/
lib.rs
