1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
| 'use strict';
|
| const ESC = '\x1B';
| const CSI = `${ESC}[`;
| const beep = '\u0007';
|
| const cursor = {
| to(x, y) {
| if (!y) return `${CSI}${x + 1}G`;
| return `${CSI}${y + 1};${x + 1}H`;
| },
| move(x, y) {
| let ret = '';
|
| if (x < 0) ret += `${CSI}${-x}D`;
| else if (x > 0) ret += `${CSI}${x}C`;
|
| if (y < 0) ret += `${CSI}${-y}A`;
| else if (y > 0) ret += `${CSI}${y}B`;
|
| return ret;
| },
| up: (count = 1) => `${CSI}${count}A`,
| down: (count = 1) => `${CSI}${count}B`,
| forward: (count = 1) => `${CSI}${count}C`,
| backward: (count = 1) => `${CSI}${count}D`,
| nextLine: (count = 1) => `${CSI}E`.repeat(count),
| prevLine: (count = 1) => `${CSI}F`.repeat(count),
| left: `${CSI}G`,
| hide: `${CSI}?25l`,
| show: `${CSI}?25h`,
| save: `${ESC}7`,
| restore: `${ESC}8`
| }
|
| const scroll = {
| up: (count = 1) => `${CSI}S`.repeat(count),
| down: (count = 1) => `${CSI}T`.repeat(count)
| }
|
| const erase = {
| screen: `${CSI}2J`,
| up: (count = 1) => `${CSI}1J`.repeat(count),
| down: (count = 1) => `${CSI}J`.repeat(count),
| line: `${CSI}2K`,
| lineEnd: `${CSI}K`,
| lineStart: `${CSI}1K`,
| lines(count) {
| let clear = '';
| for (let i = 0; i < count; i++)
| clear += this.line + (i < count - 1 ? cursor.up() : '');
| if (count)
| clear += cursor.left;
| return clear;
| }
| }
|
| module.exports = { cursor, scroll, erase, beep };
|
|
