#![allow(deprecated)]
use {
super::{BinaryType, Digest, IntoOkId, OkId},
crate::hex_to_byte,
digest::core_api::CoreWrapper,
std::{fmt::Display, str::FromStr},
zerocopy::{ByteEq, ByteHash, FromBytes, Immutable, IntoBytes, Unaligned},
};
#[derive(Copy, Clone, Debug, ByteHash, ByteEq, Immutable, IntoBytes, FromBytes, Unaligned)]
#[repr(C)]
pub(super) struct Sha1(pub(crate) [u8; 20]);
use sha1::Digest as sha1Digest;
impl From<sha1::Sha1> for OkId {
fn from(value: sha1::Sha1) -> Self {
let data = value.finalize();
let data = data.get(0..20).unwrap();
let mut buf = [0; 20];
if data.len() == 20 {
buf.copy_from_slice(data);
}
Self {
hash_type: BinaryType::Sha1,
digest: Digest::Sha1(Sha1(buf)),
}
}
}
impl From<sha1::Sha1Core> for OkId {
fn from(value: sha1::Sha1Core) -> Self {
CoreWrapper::from_core(value).into()
}
}
impl IntoOkId for sha1::Sha1 {}
impl Display for Sha1 {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
let data = self.0;
let buf = &hex::encode(data);
f.write_str(buf)?;
Ok(())
}
}
impl FromStr for Sha1 {
type Err = super::Error;
fn from_str(s: &str) -> Result<Self, Self::Err> {
let buf = hex::decode(s)?;
let mut hash: [u8; 20] = [0; 20];
hash.copy_from_slice(&buf[..]);
Ok(Sha1(hash))
}
}
impl From<Sha1> for Vec<u64> {
fn from(value: Sha1) -> Self {
let data = value.0;
let mut buf = [0; 20];
buf.copy_from_slice(&data);
let mut out = [0; 8];
for i in 0..8 {
out[i] = u64::from_le_bytes(buf[i * 8..(i + 1) * 8].try_into().unwrap());
}
out.to_vec()
}
}
pub(crate) const fn parse_sha1_bytes(bytes: &[u8], start: usize) -> Option<crate::sha1::Sha1> {
let mut result = [0u8; 20];
let mut i = 0;
while i < 40 {
let high = match hex_to_byte(bytes[start + i]) {
Some(b) => b,
None => return None,
};
let low = match hex_to_byte(bytes[start + i + 1]) {
Some(b) => b,
None => return None,
};
result[i / 2] = (high << 4) | low;
i += 2;
}
Some(crate::sha1::Sha1(result))
}