fluent-compiler

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This is a Python implementation of Project Fluent <https://www.projectfluent.org/>_, a localization framework designed to unleash the entire expressive power of natural language translations.

It provides a different implementation from the official fluent.runtime <https://github.com/projectfluent/python-fluent>_ implementation, distinguished mainly by:

strategy: we compile FTL files to Python bytecode via AST and use exec (similar to the strategy used by projects like Mako, Jinja2 and Genshi).
speed: as a result of the above, plus static analysis, we get blazing fast performance, even more so when combined with PyPy which can further optimize.
compile-time checking and error reporting.
'escapers' feature for handling things like HTML escaping/embedding correctly.

Installation

To install::

pip install fluent_compiler

Usage

See the docs folder <https://github.com/django-ftl/fluent-compiler/tree/master/docs/> or read them on readthedocs.org <https://fluent-compiler.readthedocs.io/en/latest/>.

If you are using Django, see django-ftl <https://github.com/django-ftl/django-ftl>_ which wraps the functionality here in Django-specific ways.

See history <https://fluent-compiler.readthedocs.io/en/latest/history.html>_ for a CHANGELOG.

Status

fluent-compiler is a complete and very mature implementation of all the Fluent spec up to version 1.0 (the latest at the time of writing).

In terms of API of this package, we are not planning backwards incompatible changes to the publicly documented interfaces, and will provide deprecation warnings for any changes.

The nature of the library is such that we expect most users will want to create their own wrappers anyway, which you are encouraged to do, in order to be able to absorb any backwards incompatible changes easily.

See the issues list <https://github.com/django-ftl/fluent-compiler/issues> for planned features, and CONTRIBUTING.rst <CONTRIBUTING.rst> for information about how to contribute, and the architecture docs <ARCHITECTURE.rst>_.

Contributing

Check out the contributing docs <CONTRIBUTING.rst> and the architecture notes <ARCHITECTURE.rst> for information that will help you before you start hacking.

Background

This code was originally developed as part of fluent.runtime, as an alternative implementation of FluentBundle, but never got merged to the master branch. It has now been pulled out as a separate package. This is why the repo's history contains fluent.syntax and early versions of fluent.runtime, but the parts that are left in this repo all derive from the original version of fluent.runtime contributed by @spookylukey from a540993a085e36a9679e12f1ee7317ddc1ece5ad <https://github.com/django-ftl/fluent-compiler/commit/a540993a085e36a9679e12f1ee7317ddc1ece5ad> onwards and the new compiler implementation in d1481d61e0bc1a28a228a4b6d5258350d436e765 <https://github.com/django-ftl/fluent-compiler/commit/d1481d61e0bc1a28a228a4b6d5258350d436e765> (which is squashed version of work done over a much longer period). Thats why we also corrected <https://github.com/django-ftl/fluent-compiler/commit/33c1b5b586858132d3ab7af749c2bde1bb5205b5>_ the copyright notice from Mozilla to Luke Plant.