Convert ASCII to Base64 then Binary with NodeJS

Question

I'm trying to convert a text string AAIA to binary. This is how Salesforce manages dependent picklists.

I essentially need to go from ascii to base64 to binary, but I think the binary needs to be bytes, not text.

Expected result is AAIA => 00000000 00000010 00000000, which means 15th item in my other list controls this one. I can't figure out how to make this work in Node! Using the above mentioned values on this site works, but no luck in Node.

Tanaike · Accepted Answer · 2019-10-29 00:16:30Z

1

You want to convert a string to binary.
You want to convert a string value of AAIA to 00000000 00000010 00000000.
You want to achieve this using Node.js.

If my understanding is correct, how about this answer?

Sample script:

In this sample, there are the outputs of 3 patterns.

const str = "AAIA";

// Pattern 1
const buf = Buffer.from(str, 'base64');
console.log(buf); // <--- <Buffer 00 02 00>

// Pattern 2
const byteAr = Uint8Array.from(buf);
console.log(byteAr); // <--- Uint8Array [ 0, 2, 0 ]

// Pattern 3
const result = buf.reduce((s, e) => {
    const temp = e.toString(2);
    return s += "00000000".substring(temp.length) + temp + " ";
}, "");
console.log(result); // <--- 00000000 00000010 00000000

References:

If I misunderstood your question and these were not the results you want, I apologize.

answered Oct 29, 2019 at 0:16

Tanaike

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2 Comments

McB Over a year ago

Thank you @Tanaike! Pattern 3 is exactly what I'm after!

Tanaike Over a year ago

@McB Thank you for replying. I'm glad your issue was resolved. Thank you, too.

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