ferrocat

Public umbrella crate for the ferrocat workspace.

Ferrocat is a Rust-native translation catalog engine. It gives applications and host-language adapters one place to parse, update, audit, validate, and compile translation catalogs into runtime-ready data.

Add it with:

cargo add ferrocat

It re-exports the stable Rust API from ferrocat-po and ferrocat-icu.

Use the umbrella crate when you want one dependency for the full catalog workflow:

• translator-friendly catalog parsing and serialization
• deterministic catalog updates and combination
• AI translation metadata for machine-generated entries, including stale-metadata cleanup after manual edits
• release QA through structured audit reports
• rich-message diagnostics for placeholders, plural/select logic, formatters, and tags
• host-neutral runtime artifact compilation

At the catalog layer, ferrocat supports three explicit modes:

• classic Gettext catalog mode: Gettext PO + gettext-compatible plurals
• ICU-native Gettext PO mode: Gettext PO + ICU MessageFormat
• ICU-native NDJSON catalog mode: NDJSON catalog storage + ICU MessageFormat

NDJSON + gettext-compatible plurals is intentionally unsupported.

Repository, docs, and contribution guidelines:

• https://github.com/sebastian-software/ferrocat
• https://docs.rs/ferrocat