cursieve/
lib.rs

1pub use cursieve_derive::Sieve;
2
3pub trait Sieve: SieveSift + SieveDisperse {
4}
5
6pub trait SieveSift {
7    fn sift_cursor_at(cursor: &mut std::io::Cursor<&[u8]>, offset: u64) -> Result<Self, Error> where Self: Sized;
8    fn sift_cursor(cursor: &mut std::io::Cursor<&[u8]>) -> Result<Self, Error> where Self: Sized {
9        Self::sift_cursor_at(cursor, 0)
10    }
11    fn sift_at(data: &[u8], offset: u64) -> Result<Self, Error> where Self: Sized {
12        let mut cursor = std::io::Cursor::new(data);
13        Self::sift_cursor_at(&mut cursor, offset)
14    }
15    fn sift(data: &[u8]) -> Result<Self, Error> where Self: Sized {
16        let mut cursor = std::io::Cursor::new(data);
17        Self::sift_cursor(&mut cursor)
18    }
19}
20
21pub trait SieveDisperse {
22    fn disperse_cursor_at(&self, cursor: &mut std::io::Cursor<&mut [u8]>, offset: u64) -> Result<(), Error>;
23    fn disperse_cursor(&self, cursor: &mut std::io::Cursor<&mut [u8]>) -> Result<(), Error> {
24        self.disperse_cursor_at(cursor, 0)
25    }
26    fn disperse_at(&self, data: &mut [u8], offset: u64) -> Result<(), Error> {
27        let mut cursor = std::io::Cursor::new(data);
28        self.disperse_cursor_at(&mut cursor, offset)
29    }
30    fn disperse(&self, data: &mut [u8]) -> Result<(), Error> {
31        let mut cursor = std::io::Cursor::new(data);
32        self.disperse_cursor(&mut cursor)
33    }
34
35    fn sieve_size() -> usize;
36
37    fn to_bytes(&self) -> Result<Vec<u8>, Error> {
38        let mut data: Vec<u8> = vec![0; Self::sieve_size()];
39        let mut cursor = std::io::Cursor::new(&mut data[..]);
40        self.disperse_cursor(&mut cursor)?;
41        Ok(data)
42    }
43}
44
45#[derive(Debug, thiserror::Error)]
46pub enum Error {
47    #[error("IoError")]
48    IoError(#[from] std::io::Error),
49    #[error("IoError")]
50    TryFromError(String),
51    #[error("A Sieve error occurred: `{0}`")]
52    Generic(String),
53}
54
55impl From<String> for Error {
56    fn from(msg: String) -> Self {
57        Error::Generic(msg)
58    }
59}
cursieve/lib.rs

cursieve/
lib.rs
