123456789101112131415161718192021222324252627282930313233343536373839404142434445464748 |
- import { converse } from '@converse/headless';
- const { u } = converse.env;
- export function appendArrayBuffer (buffer1, buffer2) {
- const tmp = new Uint8Array(buffer1.byteLength + buffer2.byteLength);
- tmp.set(new Uint8Array(buffer1), 0);
- tmp.set(new Uint8Array(buffer2), buffer1.byteLength);
- return tmp.buffer;
- }
- export function arrayBufferToHex (ab) {
- // https://stackoverflow.com/questions/40031688/javascript-arraybuffer-to-hex#40031979
- return Array.prototype.map.call(new Uint8Array(ab), x => ('00' + x.toString(16)).slice(-2)).join('');
- }
- export function arrayBufferToString (ab) {
- return new TextDecoder("utf-8").decode(ab);
- }
- export function stringToArrayBuffer (string) {
- const bytes = new TextEncoder("utf-8").encode(string);
- return bytes.buffer;
- }
- export function arrayBufferToBase64 (ab) {
- return btoa((new Uint8Array(ab)).reduce((data, byte) => data + String.fromCharCode(byte), ''));
- }
- export function base64ToArrayBuffer (b64) {
- const binary_string = window.atob(b64),
- len = binary_string.length,
- bytes = new Uint8Array(len);
- for (let i = 0; i < len; i++) {
- bytes[i] = binary_string.charCodeAt(i)
- }
- return bytes.buffer
- }
- export function hexToArrayBuffer (hex) {
- const typedArray = new Uint8Array(hex.match(/[\da-f]{2}/gi).map(h => parseInt(h, 16)))
- return typedArray.buffer
- }
- Object.assign(u, { arrayBufferToHex, arrayBufferToString, stringToArrayBuffer, arrayBufferToBase64, base64ToArrayBuffer });
|