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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 | 1x 1x 1x 1x 4x 4x 1x 1x 4x 1x 1x 4x 1x 1x 4x 1x 1x 4x 4x | import { type BinaryEncoding } from './@types/binary-encoding.ts';
import { chop } from './chop.ts';
import { decodeBase64 } from './decode-base64.ts';
import { decodeBase64Url } from './decode-base64-url.ts';
/**
* Decode a string into a binary object
*
* The string can be in `base64`, `base64url`, `hex`, or `binary` {@link BinaryEncoding} format.
*
* - `base64`: The binary object was encoded using {@link encodeBase64}
* - `base64url`: The binary object was encoded using {@link encodeBase64Url}
* - `hex`: each byte in the binary object was converted to a 2-digit hexadecimal number.
* - `binary`: each byte in the binary object was converted to a single 8-bit character.
* @param input - encoded binary object
* @param encoding - The encoding to use
* @returns encoded string
* @example
* ```typescript
* decodeBinary('SGVsbG8=', 'base64'); // Uint8Array([72, 101, 108, 108, 111])
* decodeBinary('SGVsbG8', 'base64url'); // Uint8Array([72, 101, 108, 108, 111])
* decodeBinary('48656c6c6f', 'hex'); // Uint8Array([72, 101, 108, 108, 111])
* decodeBinary('Hello', 'binary'); // Uint8Array([72, 101, 108, 108, 111])
* ```
* @group Binary
* @category Encoding
*/
export function decodeBinary(input: string, encoding: BinaryEncoding): Uint8Array {
switch (encoding) {
case 'base64': {
return decodeBase64(input);
}
case 'base64url': {
return decodeBase64Url(input);
}
case 'hex': {
return new Uint8Array(chop(input, 2).map((hex) => Number.parseInt(hex, 16)));
}
case 'binary': {
// eslint-disable-next-line unicorn/prefer-code-point
return Uint8Array.from(input, (char) => char.charCodeAt(0));
}
// no default
}
}
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