uint8arrays/esm/src/util/bases.js

Utility functions to make dealing with Uint8Arrays easier

import { bases } from 'multiformats/basics';
function createCodec(name, prefix, encode, decode) {
  return {
    name,
    prefix,
    encoder: {
      name,
      prefix,
      encode
    },
    decoder: { decode }
  };
}
const string = createCodec('utf8', 'u', buf => {
  const decoder = new TextDecoder('utf8');
  return 'u' + decoder.decode(buf);
}, str => {
  const encoder = new TextEncoder();
  return encoder.encode(str.substring(1));
});
const ascii = createCodec('ascii', 'a', buf => {
  let string = 'a';
  for (let i = 0; i < buf.length; i++) {
    string += String.fromCharCode(buf[i]);
  }
  return string;
}, str => {
  str = str.substring(1);
  const buf = new Uint8Array(str.length);
  for (let i = 0; i < str.length; i++) {
    buf[i] = str.charCodeAt(i);
  }
  return buf;
});
const BASES = {
  utf8: string,
  'utf-8': string,
  hex: bases.base16,
  latin1: ascii,
  ascii: ascii,
  binary: ascii,
  ...bases
};
export default BASES;