#base64-encoding #base64 #const-fn #codec #no-std

no-std const_base

Decoding/encoding base 64/32/16 strings at compile-time

4 releases

0.2.0 Dec 5, 2022
0.1.2 Aug 15, 2021
0.1.1 Aug 12, 2021
0.1.0 Aug 10, 2021

#1600 in Encoding

Download history 68/week @ 2024-01-31 116/week @ 2024-02-07 43/week @ 2024-02-14 54/week @ 2024-02-21 43/week @ 2024-02-28 1/week @ 2024-03-06

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Zlib license

98KB
2K SLoC

Rust crates-io api-docs

For decoding/encoding base 64/32/16 strings at compile-time.

Examples

Encoding

use const_base::{encode_as_str, Config};

{
    // the encoding macros can take both `&str` and `&[u8]` constants.
    const OUTA: &str = encode_as_str!("foo", Config::B64);
    const OUTB: &str = encode_as_str!(b"foo", Config::B64);
    
    assert_eq!(OUTA, "Zm9v");
    assert_eq!(OUTB, "Zm9v");
}
{
    const BYTES: &[u8] = b"hello";

    // the encoding macros can encode_as_str non-literal constants
    const OUT: &str = encode_as_str!(BYTES, Config::B64_URL_SAFE);
    
    assert_eq!(OUT, "aGVsbG8=");
}

Decoding

use const_base::{decode, Config};

{
    const OUT: &[u8] = decode!("MZXW6===", Config::B32);
    
    assert_eq!(OUT, b"foo");
}
{
    const BYTES: &[u8] = b"f000";

    // this macro can decode non-literal constants
    const OUT: &[u8] = decode!(BYTES, Config::HEX);
    
    assert_eq!(OUT, &[0xF0, 0x00]);
}

No-std support

const_base is #![no_std], it can be used anywhere Rust can be used.

Minimum Supported Rust Version

const_base requires Rust 1.64.0.

Dependencies

~215KB