git_bitmap/
lib.rs

1//! An implementation of the shared parts of git bitmaps used in `git-pack`, `git-index` and `git-worktree`.
2//!
3//! Note that many tests are performed indirectly by tests in the aforementioned consumer crates.
4#![deny(rust_2018_idioms, unsafe_code)]
5#![allow(missing_docs)]
6
7/// Bitmap utilities for the advanced word-aligned hybrid bitmap
8pub mod ewah;
9
10pub(crate) mod decode {
11    use std::convert::TryInto;
12
13    use quick_error::quick_error;
14
15    quick_error! {
16        #[derive(Debug)]
17        pub enum Error {
18            Corrupt(message: &'static str) {
19                display("{}", message)
20            }
21        }
22    }
23
24    #[inline]
25    pub(crate) fn split_at_pos(data: &[u8], pos: usize) -> Option<(&[u8], &[u8])> {
26        if data.len() < pos {
27            return None;
28        }
29        data.split_at(pos).into()
30    }
31
32    #[inline]
33    pub(crate) fn u32(data: &[u8]) -> Option<(u32, &[u8])> {
34        split_at_pos(data, 4).map(|(num, data)| (u32::from_be_bytes(num.try_into().unwrap()), data))
35    }
36}
git_bitmap/lib.rs

git_bitmap/
lib.rs
