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refactor(tvix/nix-compat): simplify encode_len

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Change-Id: Idfefd3b5b0d1ffbd4e9208e634a2d9989965a291
Reviewed-on: https://cl.tvl.fyi/c/depot/+/9845
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
This commit is contained in:
edef 2023-10-27 00:01:58 +00:00
parent b916c2d0b1
commit 4d35a56798
1 changed files with 5 additions and 6 deletions
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11
tvix/nix-compat/src/nixbase32.rs
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@ -104,10 +104,7 @@ pub fn decode_len(len: usize) -> usize {
/// Returns the encoded length of an input of length len
pub fn encode_len(len: usize) -> usize {
if len == 0 {
return 0;
}
(len * 8 - 1) / 5 + 1
(len * 8 + 4) / 5
}
#[cfg(test)]
@ -157,11 +154,13 @@ mod tests {
#[test]
fn encode_len() {
assert_eq!(super::encode_len(20), 32)
assert_eq!(super::encode_len(0), 0);
assert_eq!(super::encode_len(20), 32);
}
#[test]
fn decode_len() {
assert_eq!(super::decode_len(32), 20)
assert_eq!(super::decode_len(0), 0);
assert_eq!(super::decode_len(32), 20);
}
}