59 lines
1.6 KiB
Markdown
59 lines
1.6 KiB
Markdown
# unicode-width
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Determine displayed width of `char` and `str` types according to
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[Unicode Standard Annex #11][UAX11] rules.
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[UAX11]: http://www.unicode.org/reports/tr11/
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[](https://travis-ci.org/unicode-rs/unicode-width)
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[Documentation](https://unicode-rs.github.io/unicode-width/unicode_width/index.html)
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```rust
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extern crate unicode_width;
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use unicode_width::UnicodeWidthStr;
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fn main() {
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let teststr = "Ｈｅｌｌｏ, ｗｏｒｌｄ!";
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let width = UnicodeWidthStr::width(teststr);
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println!("{}", teststr);
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println!("The above string is {} columns wide.", width);
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let width = teststr.width_cjk();
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println!("The above string is {} columns wide (CJK).", width);
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}
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```
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**NOTE:** The computed width values may not match the actual rendered column
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width. For example, the woman scientist emoji comprises of a woman emoji, a
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zero-width joiner and a microscope emoji.
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```rust
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extern crate unicode_width;
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use unicode_width::UnicodeWidthStr;
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fn main() {
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assert_eq!(UnicodeWidthStr::width("👩"), 2); // Woman
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assert_eq!(UnicodeWidthStr::width("🔬"), 2); // Microscope
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assert_eq!(UnicodeWidthStr::width("👩🔬"), 4); // Woman scientist
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}
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```
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See [Unicode Standard Annex #11][UAX11] for precise details on what is and isn't
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covered by this crate.
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## features
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unicode-width does not depend on libstd, so it can be used in crates
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with the `#![no_std]` attribute.
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## crates.io
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You can use this package in your project by adding the following
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to your `Cargo.toml`:
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```toml
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[dependencies]
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unicode-width = "0.1.7"
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```
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