Crate twine[][src]

Rust Latest Version Docs.rs LOC Dependency Status

Library for internationalization using the Twine file format.

Usage

  1. You need to add twine to your [build-dependencies] in Cargo.toml.

  2. Create (or edit) your build.rs file:

fn main() {
    println!("cargo:rerun-if-changed=build.rs");
    twine::build_translations(&["translations.ini"], "i18n.rs");
}
  1. You need an INI file with your translations. Example with translations.ini:
[app_ruin_the_band]
    en = Ruin a band name by translating it in French
    fr = Ruiner le nom d'un groupe en le traduisant en français
[band_tool]
    en = Tool
    fr = Outil
[band_the_doors]
    en = The Doors
    fr = Les portes
[band_rage_against_the_machine]
    en = Rage Against the Machine
    en-gb = Wrath Against the Machine
    fr = Colère contre la machine
[band_the_jackson_5]
    en = The Jackson 5
    fr = Les 5 fils de Jack
[format_string]
    en = %s, %@!
    fr = %s, %@ !
[format_percentage]
    en = %.0f%
    fr = %.0f %
[format_hexadecimal]
    en = %x
    fr = %#X
  1. Now in your project you can use the macro t! to translate anything:
// you need to include the generated file somewhere
include!(concat!(env!("OUT_DIR"), "/i18n.rs"));

fn main() {
    // use "" if there is no localization
    let lang = Lang::Fr("be");

    // will output "Ruiner le nom d'un groupe en le traduisant en français"
    t!(app_ruin_the_band => lang);

    // using formatted arguments, this will output "73 %"
    t!(format_percentage, 73.02f32 => lang);
}

Implementation Notes

All translation keys must have all the languages of all the keys. For example, if all your keys have translations for en and fr, if one key has only en, it will fail to compile.

Localized translation can be provided and will be used if available. Otherwise it will fallback to the default translation for that language.

Any typo in the key will make the compilation fail. Missing format arguments will also make the compilation fail.

Features

  • serde: when this feature is activated you will need to add serde to your dependencies and the Lang enum generated implements Serialize and Deserialize.

License

This work is dual-licensed under Apache 2.0 and MIT. You can choose between one of them if you use this work.

Functions

build_translations

Generate the t!() macro based on the provided list of paths to Twine INI translation files.

build_translations_from_readers

Generate the t!() macro based on the provided list of readers containing Twine INI translations.

build_translations_from_str

Generate the t!() macro based on the provided list of &str containing Twine INI translations.