commit | 3233e4da6626c6d4cb42ed3b1438e8207c40dff9 | [log] [tgz] |
---|---|---|
author | Matthew Maurer <mmaurer@google.com> | Tue Mar 07 17:25:05 2023 -0800 |
committer | Matthew Maurer <mmaurer@google.com> | Tue Mar 07 17:25:05 2023 -0800 |
tree | 32f17cc080f4e26ad7ba9b6b462051aca4898b26 | |
parent | 2ff1ffe072a0d5d9acbab423b3bd77d687f2700f [diff] |
Make unicode-width available to product and vendor Bug: 270690570 Test: mma in external/rust/crates Change-Id: I213bc0074c347af1b33a53ec4499b6765415c6d9
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"