Last change
on this file since 571e0df was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
|
-
Property mode
set to
100644
|
File size:
1.2 KB
|
Rev | Line | |
---|
[6a3a178] | 1 | "use strict";
|
---|
| 2 |
|
---|
| 3 | Object.defineProperty(exports, "__esModule", {
|
---|
| 4 | value: true
|
---|
| 5 | });
|
---|
| 6 | exports.encode = encode;
|
---|
| 7 |
|
---|
| 8 | function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }
|
---|
| 9 |
|
---|
| 10 | function _toArray(arr) { return Array.isArray(arr) ? arr : Array.from(arr); }
|
---|
| 11 |
|
---|
| 12 | function con(n) {
|
---|
| 13 | return 0x80 | n & 0x3f;
|
---|
| 14 | }
|
---|
| 15 |
|
---|
| 16 | function encode(str) {
|
---|
| 17 | var arr = str.split("").map(function (x) {
|
---|
| 18 | return x.charCodeAt(0);
|
---|
| 19 | });
|
---|
| 20 | return _encode(arr);
|
---|
| 21 | }
|
---|
| 22 |
|
---|
| 23 | function _encode(arr) {
|
---|
| 24 | if (arr.length === 0) {
|
---|
| 25 | return [];
|
---|
| 26 | }
|
---|
| 27 |
|
---|
| 28 | var _arr = _toArray(arr),
|
---|
| 29 | n = _arr[0],
|
---|
| 30 | ns = _arr.slice(1);
|
---|
| 31 |
|
---|
| 32 | if (n < 0) {
|
---|
| 33 | throw new Error("utf8");
|
---|
| 34 | }
|
---|
| 35 |
|
---|
| 36 | if (n < 0x80) {
|
---|
| 37 | return [n].concat(_toConsumableArray(_encode(ns)));
|
---|
| 38 | }
|
---|
| 39 |
|
---|
| 40 | if (n < 0x800) {
|
---|
| 41 | return [0xc0 | n >>> 6, con(n)].concat(_toConsumableArray(_encode(ns)));
|
---|
| 42 | }
|
---|
| 43 |
|
---|
| 44 | if (n < 0x10000) {
|
---|
| 45 | return [0xe0 | n >>> 12, con(n >>> 6), con(n)].concat(_toConsumableArray(_encode(ns)));
|
---|
| 46 | }
|
---|
| 47 |
|
---|
| 48 | if (n < 0x110000) {
|
---|
| 49 | return [0xf0 | n >>> 18, con(n >>> 12), con(n >>> 6), con(n)].concat(_toConsumableArray(_encode(ns)));
|
---|
| 50 | }
|
---|
| 51 |
|
---|
| 52 | throw new Error("utf8");
|
---|
| 53 | } |
---|
Note:
See
TracBrowser
for help on using the repository browser.