Uses new Rust 2021
|0.1.0||Aug 19, 2022|
#5 in #base85
N85 encoder & decoder.
N85 is a binary-to-ASCII encoding based on Ascii85 but more suitable for use as strings
") and with a simpler implementation than the other variants.
Every 4 bytes is mapped to 5 characters, adding ~25% of storage overhead. For comparison, base64 maps every 3 bytes to 4 characters, adding ~33% overhead.
let s = "Hello, world!"; let enc = n85::encode_string(s.as_ref()); assert_eq!(&enc, "Yb(qJ[NH@N0AO?HI("); let dec = n85::decode_vec(enc.as_ref()).unwrap(); assert_eq!(&dec, s.as_bytes());
An arbitrary byte string is split into chunks for 32-bit little endian integers. The last chunk is padded with zeroes.
Every integer is 5 times divided by 85, giving 5 remainders.
() is added to each remainder.
If the result is equal or greater to 92 (
\), 1 is added.
If the last chunk is 1, 2, 3 or 4 byte large, 2, 3, 4 or 5 characters are used for encoding respectively.
No runtime deps