commit | 08c7c563a690971bf4811e96853669aea951845b | [log] [tgz] |
---|---|---|
author | Joel Galenson <jgalenson@google.com> | Fri Aug 20 12:24:43 2021 -0700 |
committer | Joel Galenson <jgalenson@google.com> | Fri Aug 20 12:24:43 2021 -0700 |
tree | 9268c0194890843e13f4935086a8123077080ee1 | |
parent | d7f6702f405efef5a47b7ee3c530e0ffef2218b7 [diff] |
Update TEST_MAPPING Test: None Change-Id: If44b2dd843da2c86fb2c7768aaf943fd0a0d1fdb
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"