Function decode_check_into

pub fn decode_check_into<B>(
    bytes: B,
    output: &mut [u8],
) -> Result<(u8, usize), Error>
where
    B: AsRef<[u8]>,

Available on crate feature check only.

Decodes Crockford Base32Check bytes into a provided output buffer.

Returns

• Ok((u8, usize)): The version byte and number of bytes written.
• Err(Error): If any errors occur during the decoding process.

Errors

• Error::InvalidString if the input contains non-ASCII characters.
• Error::InvalidChar if the character is not found in C32_ALPHABET.
• Error::InvalidBufferSize if the output buffer is too small.
• Error::InvalidDataSize when data requirements are not met.
• Error::TryFromInt when bit arithmetic operations exceeds bounds.

Panics

This function can panic in two cases:

• If slice bounds are exceeded while computing the checksum.
• If the input bytes are empty when calling split_first().

This panic indicates an implementation issue and should never occur.

Examples

let bytes = b"P7AWVHENJJ0RB441K6JVK5DNJ7J3V5";

// allocate a buffer with enough capacity
let mut buffer = [0; 32];

// decode bytes with checksum into the buffer
let (version, written) = c32::decode_check_into(bytes, &mut buffer)?;

let expected = b"usque ad finem";
assert_eq!(&buffer[..written], expected);
assert_eq!(version, 22);