| import parse from './parse.js'; |
| import { unsafeStringify } from './stringify.js'; |
| export function stringToBytes(str) { |
| str = unescape(encodeURIComponent(str)); |
| const bytes = new Uint8Array(str.length); |
| for (let i = 0; i < str.length; ++i) { |
| bytes[i] = str.charCodeAt(i); |
| } |
| return bytes; |
| } |
| export const DNS = '6ba7b810-9dad-11d1-80b4-00c04fd430c8'; |
| export const URL = '6ba7b811-9dad-11d1-80b4-00c04fd430c8'; |
| export default function v35(version, hash, value, namespace, buf, offset) { |
| const valueBytes = typeof value === 'string' ? stringToBytes(value) : value; |
| const namespaceBytes = typeof namespace === 'string' ? parse(namespace) : namespace; |
| if (typeof namespace === 'string') { |
| namespace = parse(namespace); |
| } |
| if (namespace?.length !== 16) { |
| throw TypeError('Namespace must be array-like (16 iterable integer values, 0-255)'); |
| } |
| let bytes = new Uint8Array(16 + valueBytes.length); |
| bytes.set(namespaceBytes); |
| bytes.set(valueBytes, namespaceBytes.length); |
| bytes = hash(bytes); |
| bytes[6] = (bytes[6] & 0x0f) | version; |
| bytes[8] = (bytes[8] & 0x3f) | 0x80; |
| if (buf) { |
| offset = offset || 0; |
| for (let i = 0; i < 16; ++i) { |
| buf[offset + i] = bytes[i]; |
| } |
| return buf; |
| } |
| return unsafeStringify(bytes); |
| } |