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Determine displayed width ofchar andstr types according toUnicode Standard Annex #11and other portions of the Unicode standard.

This crate is#![no_std].

use unicode_width::UnicodeWidthStr;fnmain(){let teststr ="Ｈｅｌｌｏ, ｗｏｒｌｄ!";let width = teststr.width();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 columnwidth. For example, the woman scientist emoji comprises of a woman emoji, azero-width joiner and a microscope emoji. Suchemoji ZWJ sequencesare considered to have the sum of the widths of their constituent parts:

externcrate unicode_width;use unicode_width::UnicodeWidthStr;fnmain(){assert_eq!("👩".width(),2);// Womanassert_eq!("🔬".width(),2);// Microscopeassert_eq!("👩‍🔬".width(),4);// Woman scientist}

Additionally,defective combining character sequencesand nonstandardKorean jamo sequences maybe rendered with a different width than what this crate says. (This is not anexhaustive list.)

You can use this package in your project by adding the followingto yourCargo.toml:

[dependencies]unicode-width ="0.1.11"