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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
/**
* Converts given data with base64 encoding
* @param data input to encode
*/
export function encode(data: string | ArrayBuffer): string {
if (typeof data === "string") {
return btoa(data);
} else {
const d = new Uint8Array(data);
let dataString = "";
for (let i = 0; i < d.length; ++i) {
dataString += String.fromCharCode(d[i]);
}
return btoa(dataString);
}
}
/**
* Converts given base64 encoded data back to original
* @param data input to decode
*/
export function decode(data: string): ArrayBuffer {
const binaryString = decodeString(data);
const binary = new Uint8Array(binaryString.length);
for (let i = 0; i < binary.length; ++i) {
binary[i] = binaryString.charCodeAt(i);
}
return binary.buffer;
}
/**
* Decodes data assuming the output is in string type
* @param data input to decode
*/
export function decodeString(data: string): string {
return atob(data);
}
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