Bergamot Translator

Bergamot translator provides a unified API for (Marian NMT framework based) neural machine translation functionality in accordance with the Bergamot project that focuses on improving client-side machine translation in a web browser.

Build Instructions

Build Natively

git clone  --recursive https://github.com/browsermt/bergamot-translator
cd bergamot-translator
mkdir build
cd build
cmake ../
make -j

Build WASM

Compiling for the first time

1. Download and Install Emscripten using following instructions

   • Get the latest sdk: git clone https://github.com/emscripten-core/emsdk.git
   • Enter the cloned directory: cd emsdk
   • Install the lastest sdk tools: ./emsdk install latest
   • Activate the latest sdk tools: ./emsdk activate latest
   • Activate path variables: source ./emsdk_env.sh

2. Clone the repository and checkout the appropriate branch using these instructions:

   git clone https://github.com/browsermt/bergamot-translator
   cd bergamot-translator
   git checkout -b wasm-integration origin/wasm-integration
   git submodule update --init --recursive
   

3. Download models (only required if you want to package files in wasm binary)

   This step is only required if you want to package files (e.g. models, vocabularies etc.) into wasm binary. If you don't then just skip this step.

   The build preloads the files in Emscripten’s virtual file system.

   If you want to use bergamot models, please follow these instructions:

   mkdir models
   git clone https://github.com/mozilla-applied-ml/bergamot-models
   cp -rf bergamot-models/* models
   gunzip models/*/*
   

4. Compile

   1. Create a folder where you want to build all the artefacts (build-wasm in this case)

      mkdir build-wasm
      cd build-wasm
      

   2. Compile the artefacts

      • If you want to package files into wasm binary then execute following commands (Replace FILES_TO_PACKAGE with the absolute path of the directory containing the files to be packaged in wasm binary)

        emcmake cmake -DCOMPILE_WASM=on -DPACKAGE_DIR=FILES_TO_PACKAGE ../
        emmake make -j
        

      • If you don't want to package any file into wasm binary then execute following commands:

        emcmake cmake -DCOMPILE_WASM=on ../
        emmake make -j
        

   The artefacts (.js and .wasm files) will be available in wasm folder of build directory ("build-wasm" in this case).

Recompiling

As long as you don't update any submodule, just follow steps in 4.ii to recompile.
If you update a submodule, execute following command before executing steps in 4.ii to recompile.

git submodule update --init --recursive

How to use

Using Native version

The builds generate library that can be integrated to any project. All the public header files are specified in src folder.
A short example of how to use the APIs is provided in app/main.cpp file.

Using WASM version

Please follow the README inside the wasm folder of this repository that demonstrates how to use the translator in JavaScript.