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Determine displayed width of char and str types according to
Unicode Standard Annex #11 rules.
extern crate unicode_width;
use unicode_width::UnicodeWidthStr;
fn main() {
let teststr = "Ｈｅｌｌｏ, ｗｏｒｌｄ!";
let width = UnicodeWidthStr::width(teststr);
println!("{}", teststr);
println!("The above string is {} columns wide.", width);
let width = teststr.width_cjk();
println!("The above string is {} columns wide (CJK).", width);
}
NOTE: The computed width values may not match the actual rendered column width. For example, the woman scientist emoji comprises of a woman emoji, a zero-width joiner and a microscope emoji.
extern crate unicode_width;
use unicode_width::UnicodeWidthStr;
fn main() {
assert_eq!(UnicodeWidthStr::width("👩"), 2); // Woman
assert_eq!(UnicodeWidthStr::width("🔬"), 2); // Microscope
assert_eq!(UnicodeWidthStr::width("👩🔬"), 4); // Woman scientist
}
See Unicode Standard Annex #11 for precise details on what is and isn't covered by this crate.
unicode-width does not depend on libstd, so it can be used in crates
with the #![no_std] attribute.
You can use this package in your project by adding the following
to your Cargo.toml:
[dependencies]
unicode-width = "0.1.7"
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