boxy
- declarative box-drawing characters
Box-drawing characters are used extensively in text user interfaces software for drawing lines, boxes, and other shapes. Unicode provides a large assortment of them in the Box Drawing block (U+2500
to U+257F
).
Unfortunately it can be quite irritating to construct code points in this range, and generating graphics using box drawing characters can be tedious. This is true even when explicit formulas exist for subsets of the block.
This crate provides the relevant lookup tables and exposes a nice interface for generating characters via the boxy::Char
type. For example:
let corner = boxy::Char::upper_left(boxy::Weight::Doubled);
let side = boxy::Char::horizontal(boxy::Weight::Doubled);
let bx = format!(
"{}{}{}\n{}{}{}",
corner, side, corner.rotate_cw(1),
corner.rotate_cw(3), side, corner.rotate_cw(2),
);
assert_eq!(bx, "
╔═╗
╚═╝
".trim());
This crate is no_std
and will never panic, making it ideal for your a e s t h e t i c kernel panic messages.