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https://github.com/wout/rosetta
A blazing fast internationalization (i18n) library for Crystal with compile-time key lookup.
https://github.com/wout/rosetta
crystal crystal-lang i18n internationalization kemal l10n language locale localization luckyframework translation
Last synced: about 2 months ago
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A blazing fast internationalization (i18n) library for Crystal with compile-time key lookup.
- Host: GitHub
- URL: https://github.com/wout/rosetta
- Owner: wout
- License: mit
- Created: 2021-08-09T16:47:26.000Z (about 3 years ago)
- Default Branch: main
- Last Pushed: 2024-01-16T10:17:40.000Z (8 months ago)
- Last Synced: 2024-06-21T18:10:17.678Z (3 months ago)
- Topics: crystal, crystal-lang, i18n, internationalization, kemal, l10n, language, locale, localization, luckyframework, translation
- Language: Crystal
- Homepage: https://wout.github.io/rosetta/latest
- Size: 2.41 MB
- Stars: 39
- Watchers: 2
- Forks: 4
- Open Issues: 5
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Funding: .github/FUNDING.yml
- License: LICENSE
Awesome Lists containing this project
- awesome-blazingly-fast - rosetta - A blazing fast internationalization (i18n) library for Crystal with compile-time key lookup. (Crystal)
- awesome-crystal - Rosetta - A blazing fast internationalization (i18n) library with compile-time key lookup supporting YAML and JSON formats (Internationalization)
README
# Rosetta
A blazing fast internationalization (i18n) library for Crystal with compile-time
key lookup. You'll never have a `missing translation` in your app, ever again.
## Why use Rosetta?
### You'll never have a missing translation
Rosetta is different from other internationalization libraries because it
handles key lookup at compile-time rather than runtime. The significant
advantage is that you'll be able to find missing translations - or typos in
your locale keys - during development rather than after you've deployed your
app. This is also true for translation keys in all additional locales.
### You'll never have a missing interpolation
In Rosetta, interpolation keys are arguments to the translation method. So if
you're missing an argument, the compiler will complain. The parser will also
compare interpolation keys in additional locales to the ones found in the
default locale, and complain if some are missing.
### Rosetta is more than 12x faster than similar libraries
Benchmarking against other libraries which also use YAML or JSON backends,
Rosetta is 12x to 700x faster than any other one.
For simple translations:
```
crimson-knight/i18n.cr translation 303.57k ( 3.29µs) (± 4.62%) 801B/op 702.21× slower
crystal-i18n/i18n translation 18.07M ( 55.35ns) (± 7.28%) 48.0B/op 12.39× slower
syeopite/lens translation 5.09M (196.47ns) (± 4.60%) 176B/op 43.98× slower
wout/rosetta translation 223.86M ( 4.47ns) (± 2.20%) 0.0B/op fastest
```
For translations with interpolations:
```
crimson-knight/i18n.cr interpolation 318.12k ( 3.14µs) (± 0.85%) 801B/op 108.51× slower
crystal-i18n/i18n interpolation 65.55k ( 15.26µs) (± 1.01%) 28.2kB/op 664.37× slower
syeopite/lens interpolation 2.04M (490.17ns) (± 1.35%) 565B/op 21.35× slower
wout/rosetta interpolation 43.55M ( 22.96ns) (± 4.81%) 80.0B/op fastest
```
Rosetta is that much faster because a lot of the hard work happens at
compile-time. And because the majority of the data is stored on the [stack
rather than the
heap](https://stackoverflow.com/questions/79923/what-and-where-are-the-stack-and-heap),
out of the scope of garbage collector.
Read more on [the official docs page](https://wout.github.io/rosetta/latest).
## Installation
1. Add the dependency to your `shard.yml`:
```yaml
dependencies:
rosetta:
github: wout/rosetta
```
2. Run `shards install`
3. Run `bin/rosetta --init`
4. Require the generated config file:
```cr
# src/app_name.cr
require "../config/rosetta"
```
5. Include the `Rosetta::Translatable` mixin:
```cr
# src/pages/main_layout.cr
include Rosetta::Translatable
```
6. Localize your app
```cr
Rosetta.locale = :es
class Hello::ShowPage < MainLayout
def content
h1 r("welcome_message").t(name: "Brian") # => "¡Hola Brian!"
end
end
```
Read more on [the official docs page](https://wout.github.io/rosetta/latest).
## Development
Make sure you have [Guardian.cr](https://github.com/f/guardian) installed. Then
run:
```bash
$ guardian
```
This will automatically:
- run ameba for src and spec files
- run the relevant spec for any file in src
- run spec file whenever they are saved
- install shards whenever you save shard.yml
## Documentation
- [Reference](https://wout.github.io/rosetta/latest)
- [API Docs](https://wout.github.io/rosetta/api/main)
## Contributing
### To the lib
1. Fork it ()
2. Create your feature branch (`git checkout -b my-new-feature`)
3. Commit your changes (`git commit -am 'Add some feature'`)
4. Push to the branch (`git push origin my-new-feature`)
5. Create a new Pull Request
### To the docs
Check out the `docs` branch and run the following command to launch the docs locally:
```
docker run --rm -it -p 8000:8000 -v ${PWD}:/docs squidfunk/mkdocs-material
```
## Contributors
- [wout](https://github.com/wout) - creator and maintainer
## Acknowledgements
This shard pulls inspiration from the following projects:
- [crimson-knight/i18n.cr](https://github.com/crimson-knight/i18n.cr)
- [crystal-i18n/i18n](https://github.com/crystal-i18n/i18n)
- [syeopite/lens](https://github.com/syeopite/lens)
- [Rails](https://github.com/rails/rails)