std/base64

Base64 encoding and decoding.

from "std/base64" import { Base64 }

Example

let encoded = Base64.encode("hello world")
let decoded = Base64.decode(encoded)!
print(decoded)  // hello world

match Base64.decode("not base64!") {
    Ok(bytes) => { print(bytes) }
    Err(e) => { print(e) }  // base64: length 11 is not a multiple of 4
}

API reference

Base64

pub struct Base64

Base64 namespace — call as Base64.encode(...), Base64.decode(...).

Base64.decode

fn Base64.decode(input: &string): Result<string>

Decode standard base64. Errs on any byte outside A–Za–z0–9+/=, a length that is not a multiple of 4, or misplaced/oversized padding; whitespace and newlines are rejected, so unwrap MIME line-wrapping before calling this.

Base64.encode

fn Base64.encode(input: &string): string

Encode bytes as standard base64 with '=' padding (RFC 4648 §4).

Base64.urlDecode

fn Base64.urlDecode(input: &string): Result<string>

Decode URL-safe base64 (A–Za–z0–9-_). Padding is optional but must be correct if present. Same strictness as decode otherwise.

Base64.urlEncode

fn Base64.urlEncode(input: &string): string

Encode bytes as URL-safe base64 with no padding (RFC 4648 §5).