5 releases

0.0.5 Jun 2, 2023
0.0.4 Oct 1, 2022
0.0.3 Aug 8, 2022
0.0.2 Feb 15, 2021
0.0.1 Feb 15, 2021

#697 in Text processing

24 downloads per month

MIT license

93KB
1.5K SLoC

roe

GitHub Actions Code Coverage Discord Twitter
Crate API API trunk

Implements Unicode case mapping for conventionally UTF-8 binary strings.

Case mapping or case conversion is a process whereby strings are converted to a particular form—uppercase, lowercase, or titlecase—possibly for display to the user.

roe can convert conventionally UTF-8 binary strings to capitalized, lowercase, and uppercase forms. This crate is used to implement String#capitalize, Symbol#capitalize, String#downcase, Symbol#downcase, String#upcase, and Symbol#upcase in Artichoke Ruby.

This crate depends on bstr.

Status

This crate is currently a work in progress. When the API is complete, Roe will support lowercase, uppercase, titlecase, and case folding iterators for conventionally UTF-8 byte slices.

Roe will implement support for full, Turkic, ASCII, and case folding transforms.

Usage

Add this to your Cargo.toml:

[dependencies]
roe = "0.0.5"

Then convert case like:

use roe::{LowercaseMode, UppercaseMode};

assert_eq!(
    roe::lowercase(b"Artichoke Ruby", LowercaseMode::Ascii).collect::<Vec<_>>(),
    b"artichoke ruby"
);
assert_eq!(
    roe::uppercase("Αύριο".as_bytes(), UppercaseMode::Full).collect::<Vec<_>>(),
    "ΑΎΡΙΟ".as_bytes()
);

Crate Features

roe is no_std compatible with an optional dependency on the alloc crate.

roe has several Cargo features, all of which are enabled by default:

  • std - Adds a dependency on std, the Rust Standard Library. This feature enables std::error::Error implementations on error types in this crate. Enabling the std feature also enables the alloc feature.
  • alloc - Adds a dependency on alloc, the Rust allocation and collections library. This feature enables APIs that allocate String or Vec.

License

roe is licensed under the MIT License (c) Ryan Lopopolo.

Dependencies

~465–620KB