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67 lines
2.5 KiB
JavaScript
67 lines
2.5 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.encode = encode;
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function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }
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function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
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function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }
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function _toArray(arr) { return _arrayWithHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableRest(); }
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function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
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function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
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function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
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function _iterableToArray(iter) { if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter); }
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function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
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function con(n) {
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return 0x80 | n & 0x3f;
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}
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function encode(str) {
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var arr = str.split("").map(function (x) {
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return x.charCodeAt(0);
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});
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return _encode(arr);
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}
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function _encode(arr) {
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if (arr.length === 0) {
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return [];
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}
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var _arr = _toArray(arr),
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n = _arr[0],
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ns = _arr.slice(1);
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if (n < 0) {
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throw new Error("utf8");
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}
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if (n < 0x80) {
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return [n].concat(_toConsumableArray(_encode(ns)));
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}
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if (n < 0x800) {
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return [0xc0 | n >>> 6, con(n)].concat(_toConsumableArray(_encode(ns)));
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}
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if (n < 0x10000) {
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return [0xe0 | n >>> 12, con(n >>> 6), con(n)].concat(_toConsumableArray(_encode(ns)));
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}
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if (n < 0x110000) {
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return [0xf0 | n >>> 18, con(n >>> 12), con(n >>> 6), con(n)].concat(_toConsumableArray(_encode(ns)));
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}
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throw new Error("utf8");
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} |