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- "use strict";
- Object.defineProperty(exports, "__esModule", { value: true });
- exports.polyUint32Array = exports.polyUint16Array = exports.decode = exports.fromCodePoint = exports.toCodePoints = void 0;
- var toCodePoints = function (str) {
- var codePoints = [];
- var i = 0;
- var length = str.length;
- while (i < length) {
- var value = str.charCodeAt(i++);
- if (value >= 0xd800 && value <= 0xdbff && i < length) {
- var extra = str.charCodeAt(i++);
- if ((extra & 0xfc00) === 0xdc00) {
- codePoints.push(((value & 0x3ff) << 10) + (extra & 0x3ff) + 0x10000);
- }
- else {
- codePoints.push(value);
- i--;
- }
- }
- else {
- codePoints.push(value);
- }
- }
- return codePoints;
- };
- exports.toCodePoints = toCodePoints;
- var fromCodePoint = function () {
- var codePoints = [];
- for (var _i = 0; _i < arguments.length; _i++) {
- codePoints[_i] = arguments[_i];
- }
- if (String.fromCodePoint) {
- return String.fromCodePoint.apply(String, codePoints);
- }
- var length = codePoints.length;
- if (!length) {
- return '';
- }
- var codeUnits = [];
- var index = -1;
- var result = '';
- while (++index < length) {
- var codePoint = codePoints[index];
- if (codePoint <= 0xffff) {
- codeUnits.push(codePoint);
- }
- else {
- codePoint -= 0x10000;
- codeUnits.push((codePoint >> 10) + 0xd800, (codePoint % 0x400) + 0xdc00);
- }
- if (index + 1 === length || codeUnits.length > 0x4000) {
- result += String.fromCharCode.apply(String, codeUnits);
- codeUnits.length = 0;
- }
- }
- return result;
- };
- exports.fromCodePoint = fromCodePoint;
- var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
- // Use a lookup table to find the index.
- var lookup = typeof Uint8Array === 'undefined' ? [] : new Uint8Array(256);
- for (var i = 0; i < chars.length; i++) {
- lookup[chars.charCodeAt(i)] = i;
- }
- var decode = function (base64) {
- var bufferLength = base64.length * 0.75, len = base64.length, i, p = 0, encoded1, encoded2, encoded3, encoded4;
- if (base64[base64.length - 1] === '=') {
- bufferLength--;
- if (base64[base64.length - 2] === '=') {
- bufferLength--;
- }
- }
- var buffer = typeof ArrayBuffer !== 'undefined' &&
- typeof Uint8Array !== 'undefined' &&
- typeof Uint8Array.prototype.slice !== 'undefined'
- ? new ArrayBuffer(bufferLength)
- : new Array(bufferLength);
- var bytes = Array.isArray(buffer) ? buffer : new Uint8Array(buffer);
- for (i = 0; i < len; i += 4) {
- encoded1 = lookup[base64.charCodeAt(i)];
- encoded2 = lookup[base64.charCodeAt(i + 1)];
- encoded3 = lookup[base64.charCodeAt(i + 2)];
- encoded4 = lookup[base64.charCodeAt(i + 3)];
- bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);
- bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);
- bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);
- }
- return buffer;
- };
- exports.decode = decode;
- var polyUint16Array = function (buffer) {
- var length = buffer.length;
- var bytes = [];
- for (var i = 0; i < length; i += 2) {
- bytes.push((buffer[i + 1] << 8) | buffer[i]);
- }
- return bytes;
- };
- exports.polyUint16Array = polyUint16Array;
- var polyUint32Array = function (buffer) {
- var length = buffer.length;
- var bytes = [];
- for (var i = 0; i < length; i += 4) {
- bytes.push((buffer[i + 3] << 24) | (buffer[i + 2] << 16) | (buffer[i + 1] << 8) | buffer[i]);
- }
- return bytes;
- };
- exports.polyUint32Array = polyUint32Array;
- //# sourceMappingURL=Util.js.map
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