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• [DIR] ..
• [FILE] base58.ts
• [FILE] base64-browser.ts
• [FILE] base64.ts
• [FILE] data.ts
• [FILE] errors.ts
• [FILE] events.ts
• [FILE] fetch.ts
• [FILE] fixednumber.ts
• [FILE] geturl-browser.ts
• [FILE] geturl.ts
• [FILE] index.ts
• [FILE] maths.ts
• [FILE] properties.ts
• [FILE] rlp-decode.ts
• [FILE] rlp-encode.ts
• [FILE] rlp.ts
• [FILE] test.txt
• [FILE] units.ts
• [FILE] utf8.ts
• [FILE] uuid.ts

Просмотр файла: base64.ts

/**
 *  [Base64 encoding](link-wiki-base64) using 6-bit words to encode
 *  arbitrary bytes into a string using 65 printable symbols, the
 *  upper-case and lower-case alphabet, the digits ``0`` through ``9``,
 *  ``"+"`` and ``"/"`` with the ``"="`` used for padding.
 *
 *  @_subsection: api/utils:Base64 Encoding  [about-base64]
 */
import { getBytes, getBytesCopy } from "./data.js";

import type { BytesLike } from "./data.js";


/**
 *  Decodes the base-64 encoded %%value%%.
 *
 *  @example:
 *    // The decoded value is always binary data...
 *    result = decodeBase64("SGVsbG8gV29ybGQhIQ==")
 *    //_result:
 *
 *    // ...use toUtf8String to convert it to a string.
 *    toUtf8String(result)
 *    //_result:
 *
 *    // Decoding binary data
 *    decodeBase64("EjQ=")
 *    //_result:
 */
export function decodeBase64(value: string): Uint8Array {
    return getBytesCopy(Buffer.from(value, "base64"));
};

/**
 *  Encodes %%data%% as a base-64 encoded string.
 *
 *  @example:
 *    // Encoding binary data as a hexstring
 *    encodeBase64("0x1234")
 *    //_result:
 *
 *    // Encoding binary data as a Uint8Array
 *    encodeBase64(new Uint8Array([ 0x12, 0x34 ]))
 *    //_result:
 *
 *    // The input MUST be data...
 *    encodeBase64("Hello World!!")
 *    //_error:
 *
 *    // ...use toUtf8Bytes for this.
 *    encodeBase64(toUtf8Bytes("Hello World!!"))
 *    //_result:
 */
export function encodeBase64(data: BytesLike): string {
    return Buffer.from(getBytes(data)).toString("base64");
}

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