nix_compat/nixhash/
algos.rs

1use std::fmt::Display;
2use std::str::FromStr;
3
4#[cfg(feature = "serde")]
5use serde_with::{DeserializeFromStr, SerializeDisplay};
6
7use crate::nixhash::Error;
8
9/// This are the hash algorithms supported by cppnix.
10#[derive(Clone, Copy, Debug, Eq, PartialEq)]
11#[cfg_attr(feature = "serde", derive(DeserializeFromStr, SerializeDisplay))]
12pub enum HashAlgo {
13    Md5,
14    Sha1,
15    Sha256,
16    Sha512,
17}
18
19impl HashAlgo {
20    // return the number of bytes in the digest of the given hash algo.
21    pub const fn digest_length(&self) -> usize {
22        match self {
23            HashAlgo::Sha1 => 20,
24            HashAlgo::Sha256 => 32,
25            HashAlgo::Sha512 => 64,
26            HashAlgo::Md5 => 16,
27        }
28    }
29}
30
31impl Display for HashAlgo {
32    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
33        match &self {
34            HashAlgo::Md5 => write!(f, "md5"),
35            HashAlgo::Sha1 => write!(f, "sha1"),
36            HashAlgo::Sha256 => write!(f, "sha256"),
37            HashAlgo::Sha512 => write!(f, "sha512"),
38        }
39    }
40}
41
42#[cfg(feature = "serde")]
43pub const SUPPORTED_ALGOS: [&str; 4] = ["md5", "sha1", "sha256", "sha512"];
44
45impl FromStr for HashAlgo {
46    type Err = Error;
47
48    fn from_str(algo_str: &str) -> Result<Self, Self::Err> {
49        match algo_str {
50            "md5" => Ok(Self::Md5),
51            "sha1" => Ok(Self::Sha1),
52            "sha256" => Ok(Self::Sha256),
53            "sha512" => Ok(Self::Sha512),
54            _ => Err(Error::InvalidAlgo),
55        }
56    }
57}
58
59impl TryFrom<&str> for HashAlgo {
60    type Error = Error;
61    fn try_from(algo_str: &str) -> Result<Self, Self::Error> {
62        algo_str.parse()
63    }
64}
nix_compat/nixhash/algos.rs

nix_compat/nixhash/
algos.rs
