#byte-stream #overlay #layer #writable #byte

memoverlay

Puts a writable layer of bytes over some byte stream

4 releases

0.1.3 Apr 12, 2024
0.1.2 Jan 2, 2023
0.1.1 Jan 2, 2023
0.1.0 Jan 2, 2023

#6 in #writable

Download history 8/week @ 2024-11-29 24/week @ 2024-12-06 34/week @ 2024-12-13 12/week @ 2024-12-20 28/week @ 2024-12-27 73/week @ 2025-01-03 75/week @ 2025-01-10 45/week @ 2025-01-17 29/week @ 2025-01-24 25/week @ 2025-01-31 9/week @ 2025-02-07 29/week @ 2025-02-14 38/week @ 2025-02-21 46/week @ 2025-02-28 27/week @ 2025-03-07 44/week @ 2025-03-14

168 downloads per month
Used in 4 crates (via nt_hive2)

GPL-3.0 license

25KB
520 lines

memoverlay

Puts a writable layer of bytes over some byte stream

memoverlay

+-----------------+------------+-----------------+-------+----------------------+-------+-----------------+
|    chunk 0      |  chunk 1   |    chunk 2      |   3   |       chunk 4        |   5   |     chunk 6     |
+-----------------+------------+-----------------+-------+----------------------+-------+-----------------+

                               +-----------------+       +----------------------+
                               +-----------------+       +----------------------+
                  +-------------------+                           +---------------------+
                  +-------------------+                           +---------------------+
+---------------------------------------------------------------------------------------------------------+
+---------------------------------------------------------------------------------------------------------+

Usage example

use std::io::{Cursor, Read, Seek, SeekFrom};
use memoverlay::MemOverlay;
use memoverlay::overlay;

let message1 = "hello, world!";
let mut overlay = overlay!(message1.as_bytes());
overlay.add_bytes_at(7, "peter".as_bytes()).unwrap();

let mut message2 = String::new();
let _ = overlay.read_to_string(&mut message2).unwrap();

assert_eq!(message2, "hello, peter!");

License: GPL-3.0

Dependencies

~220–670KB
~16K SLoC