Lorem Ipsum MCP Server

import * as Either from "../../Either.js" import type * as Encoding from "../../Encoding.js" import { DecodeException } from "./common.js" /** @internal */ export const encode = (bytes: Uint8Array) => { const length = bytes.length let result = "" let i: number for (i = 2; i < length; i += 3) { result += base64abc[bytes[i - 2] >> 2] result += base64abc[((bytes[i - 2] & 0x03) << 4) | (bytes[i - 1] >> 4)] result += base64abc[((bytes[i - 1] & 0x0f) << 2) | (bytes[i] >> 6)] result += base64abc[bytes[i] & 0x3f] } if (i === length + 1) { // 1 octet yet to write result += base64abc[bytes[i - 2] >> 2] result += base64abc[(bytes[i - 2] & 0x03) << 4] result += "==" } if (i === length) { // 2 octets yet to write result += base64abc[bytes[i - 2] >> 2] result += base64abc[((bytes[i - 2] & 0x03) << 4) | (bytes[i - 1] >> 4)] result += base64abc[(bytes[i - 1] & 0x0f) << 2] result += "=" } return result } /** @internal */ export const decode = (str: string): Either.Either<Uint8Array, Encoding.DecodeException> => { const stripped = stripCrlf(str) const length = stripped.length if (length % 4 !== 0) { return Either.left( DecodeException(stripped, `Length must be a multiple of 4, but is ${length}`) ) } const index = stripped.indexOf("=") if (index !== -1 && ((index < length - 2) || (index === length - 2 && stripped[length - 1] !== "="))) { return Either.left( DecodeException(stripped, "Found a '=' character, but it is not at the end") ) } try { const missingOctets = stripped.endsWith("==") ? 2 : stripped.endsWith("=") ? 1 : 0 const result = new Uint8Array(3 * (length / 4) - missingOctets) for (let i = 0, j = 0; i < length; i += 4, j += 3) { const buffer = getBase64Code(stripped.charCodeAt(i)) << 18 | getBase64Code(stripped.charCodeAt(i + 1)) << 12 | getBase64Code(stripped.charCodeAt(i + 2)) << 6 | getBase64Code(stripped.charCodeAt(i + 3)) result[j] = buffer >> 16 result[j + 1] = (buffer >> 8) & 0xff result[j + 2] = buffer & 0xff } return Either.right(result) } catch (e) { return Either.left( DecodeException(stripped, e instanceof Error ? e.message : "Invalid input") ) } } /** @internal */ export const stripCrlf = (str: string) => str.replace(/[\n\r]/g, "") /** @internal */ function getBase64Code(charCode: number) { if (charCode >= base64codes.length) { throw new TypeError(`Invalid character ${String.fromCharCode(charCode)}`) } const code = base64codes[charCode] if (code === 255) { throw new TypeError(`Invalid character ${String.fromCharCode(charCode)}`) } return code } /** @internal */ const base64abc = [ "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "+", "/" ] /** @internal */ const base64codes = [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 62, 255, 255, 255, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 255, 255, 255, 0, 255, 255, 255, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 255, 255, 255, 255, 255, 255, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51 ]