commit | 76d5338c0819652edf17ebaba58513e2087260a8 | [log] [tgz] |
---|---|---|
author | David LeGare <legare@google.com> | Wed Mar 02 19:54:27 2022 +0000 |
committer | David LeGare <legare@google.com> | Wed Mar 02 22:27:14 2022 +0000 |
tree | 4c1cecaf5fa7d0c5b8056fd5724cfda8ab40652a | |
parent | fc032e38dc6371ef9dd506728fea14e0ab82988c [diff] |
Update TEST_MAPPING Test: cd external/rust/crates && atest --host -c Change-Id: I26fa6e92cf2972122fb87e11de87f49edc06666c
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"