MLE Base64 Encoding

This module contains code to work with base64-encoded data.

Getting Started

In order to use the base64 module, it needs to be imported first. If executed as a snippet in DBMS_MLE, a dynamic import needs to be used and wrapped within an async function:

const {encode: base64encode, decode: base64decode} = await import('mle-encode-base64');
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If used within MLE modules, the regular ECMAScript module import syntax can be used:

import {encode as base64encode, decode as base64decode} from 'mle-encode-base64';
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The following example shows how to encode an ASCII string and to decode it again into an ArrayBuffer which can then be converted back into a string using asciiBytesToString:

function asciiBytesToString(bytesBuffer) {
    let charCodes = new Uint8Array(bytesBuffer);
    let result = "";

    charCodes.forEach((char) => {
      result += String.fromCharCode(char);
    });
    return result;
}

const testInput = 'hello';
const encoded = base64encode(testInput);
console.log('encoded: ' + encoded);
const decodedBytes = base64decode(encoded);
console.log('decoded into an ArrayBuffer?: ' + (decodedBytes instanceof ArrayBuffer));
const stringFromBytes = asciiBytesToString(decodedBytes);
console.log('string from decoded: ' + stringFromBytes);
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