--- /dev/null
+'use strict';
+
+const readline = require('readline');
+const combos = require('./combos');
+
+/* eslint-disable no-control-regex */
+const metaKeyCodeRe = /^(?:\x1b)([a-zA-Z0-9])$/;
+const fnKeyRe = /^(?:\x1b+)(O|N|\[|\[\[)(?:(\d+)(?:;(\d+))?([~^$])|(?:1;)?(\d+)?([a-zA-Z]))/;
+const keyName = {
+ /* xterm/gnome ESC O letter */
+ 'OP': 'f1',
+ 'OQ': 'f2',
+ 'OR': 'f3',
+ 'OS': 'f4',
+ /* xterm/rxvt ESC [ number ~ */
+ '[11~': 'f1',
+ '[12~': 'f2',
+ '[13~': 'f3',
+ '[14~': 'f4',
+ /* from Cygwin and used in libuv */
+ '[[A': 'f1',
+ '[[B': 'f2',
+ '[[C': 'f3',
+ '[[D': 'f4',
+ '[[E': 'f5',
+ /* common */
+ '[15~': 'f5',
+ '[17~': 'f6',
+ '[18~': 'f7',
+ '[19~': 'f8',
+ '[20~': 'f9',
+ '[21~': 'f10',
+ '[23~': 'f11',
+ '[24~': 'f12',
+ /* xterm ESC [ letter */
+ '[A': 'up',
+ '[B': 'down',
+ '[C': 'right',
+ '[D': 'left',
+ '[E': 'clear',
+ '[F': 'end',
+ '[H': 'home',
+ /* xterm/gnome ESC O letter */
+ 'OA': 'up',
+ 'OB': 'down',
+ 'OC': 'right',
+ 'OD': 'left',
+ 'OE': 'clear',
+ 'OF': 'end',
+ 'OH': 'home',
+ /* xterm/rxvt ESC [ number ~ */
+ '[1~': 'home',
+ '[2~': 'insert',
+ '[3~': 'delete',
+ '[4~': 'end',
+ '[5~': 'pageup',
+ '[6~': 'pagedown',
+ /* putty */
+ '[[5~': 'pageup',
+ '[[6~': 'pagedown',
+ /* rxvt */
+ '[7~': 'home',
+ '[8~': 'end',
+ /* rxvt keys with modifiers */
+ '[a': 'up',
+ '[b': 'down',
+ '[c': 'right',
+ '[d': 'left',
+ '[e': 'clear',
+
+ '[2$': 'insert',
+ '[3$': 'delete',
+ '[5$': 'pageup',
+ '[6$': 'pagedown',
+ '[7$': 'home',
+ '[8$': 'end',
+
+ 'Oa': 'up',
+ 'Ob': 'down',
+ 'Oc': 'right',
+ 'Od': 'left',
+ 'Oe': 'clear',
+
+ '[2^': 'insert',
+ '[3^': 'delete',
+ '[5^': 'pageup',
+ '[6^': 'pagedown',
+ '[7^': 'home',
+ '[8^': 'end',
+ /* misc. */
+ '[Z': 'tab',
+}
+
+function isShiftKey(code) {
+ return ['[a', '[b', '[c', '[d', '[e', '[2$', '[3$', '[5$', '[6$', '[7$', '[8$', '[Z'].includes(code)
+}
+
+function isCtrlKey(code) {
+ return [ 'Oa', 'Ob', 'Oc', 'Od', 'Oe', '[2^', '[3^', '[5^', '[6^', '[7^', '[8^'].includes(code)
+}
+
+const keypress = (s = '', event = {}) => {
+ let parts;
+ let key = {
+ name: event.name,
+ ctrl: false,
+ meta: false,
+ shift: false,
+ option: false,
+ sequence: s,
+ raw: s,
+ ...event
+ };
+
+ if (Buffer.isBuffer(s)) {
+ if (s[0] > 127 && s[1] === void 0) {
+ s[0] -= 128;
+ s = '\x1b' + String(s);
+ } else {
+ s = String(s);
+ }
+ } else if (s !== void 0 && typeof s !== 'string') {
+ s = String(s);
+ } else if (!s) {
+ s = key.sequence || '';
+ }
+
+ key.sequence = key.sequence || s || key.name;
+
+ if (s === '\r') {
+ // carriage return
+ key.raw = void 0;
+ key.name = 'return';
+ } else if (s === '\n') {
+ // enter, should have been called linefeed
+ key.name = 'enter';
+ } else if (s === '\t') {
+ // tab
+ key.name = 'tab';
+ } else if (s === '\b' || s === '\x7f' || s === '\x1b\x7f' || s === '\x1b\b') {
+ // backspace or ctrl+h
+ key.name = 'backspace';
+ key.meta = s.charAt(0) === '\x1b';
+ } else if (s === '\x1b' || s === '\x1b\x1b') {
+ // escape key
+ key.name = 'escape';
+ key.meta = s.length === 2;
+ } else if (s === ' ' || s === '\x1b ') {
+ key.name = 'space';
+ key.meta = s.length === 2;
+ } else if (s <= '\x1a') {
+ // ctrl+letter
+ key.name = String.fromCharCode(s.charCodeAt(0) + 'a'.charCodeAt(0) - 1);
+ key.ctrl = true;
+ } else if (s.length === 1 && s >= '0' && s <= '9') {
+ // number
+ key.name = 'number';
+ } else if (s.length === 1 && s >= 'a' && s <= 'z') {
+ // lowercase letter
+ key.name = s;
+ } else if (s.length === 1 && s >= 'A' && s <= 'Z') {
+ // shift+letter
+ key.name = s.toLowerCase();
+ key.shift = true;
+ } else if ((parts = metaKeyCodeRe.exec(s))) {
+ // meta+character key
+ key.meta = true;
+ key.shift = /^[A-Z]$/.test(parts[1]);
+ } else if ((parts = fnKeyRe.exec(s))) {
+ let segs = [...s];
+
+ if (segs[0] === '\u001b' && segs[1] === '\u001b') {
+ key.option = true;
+ }
+
+ // ansi escape sequence
+ // reassemble the key code leaving out leading \x1b's,
+ // the modifier key bitflag and any meaningless "1;" sequence
+ let code = [parts[1], parts[2], parts[4], parts[6]].filter(Boolean).join('');
+ let modifier = (parts[3] || parts[5] || 1) - 1;
+
+ // Parse the key modifier
+ key.ctrl = !!(modifier & 4);
+ key.meta = !!(modifier & 10);
+ key.shift = !!(modifier & 1);
+ key.code = code;
+
+ key.name = keyName[code];
+ key.shift = isShiftKey(code) || key.shift;
+ key.ctrl = isCtrlKey(code) || key.ctrl;
+ }
+ return key;
+};
+
+keypress.listen = (options = {}, onKeypress) => {
+ let { stdin } = options;
+
+ if (!stdin || (stdin !== process.stdin && !stdin.isTTY)) {
+ throw new Error('Invalid stream passed');
+ }
+
+ let rl = readline.createInterface({ terminal: true, input: stdin });
+ readline.emitKeypressEvents(stdin, rl);
+
+ let on = (buf, key) => onKeypress(buf, keypress(buf, key), rl);
+ let isRaw = stdin.isRaw;
+
+ if (stdin.isTTY) stdin.setRawMode(true);
+ stdin.on('keypress', on);
+ rl.resume();
+
+ let off = () => {
+ if (stdin.isTTY) stdin.setRawMode(isRaw);
+ stdin.removeListener('keypress', on);
+ rl.pause();
+ rl.close();
+ };
+
+ return off;
+};
+
+keypress.action = (buf, key, customActions) => {
+ let obj = { ...combos, ...customActions };
+ if (key.ctrl) {
+ key.action = obj.ctrl[key.name];
+ return key;
+ }
+
+ if (key.option && obj.option) {
+ key.action = obj.option[key.name];
+ return key;
+ }
+
+ if (key.shift) {
+ key.action = obj.shift[key.name];
+ return key;
+ }
+
+ key.action = obj.keys[key.name];
+ return key;
+};
+
+module.exports = keypress;
projects / dotfiles / .git / blobdiff