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JOC Cockpit ships with language files that include translations for the following languages:

  • English
  • French
  • Japanese
  • German

Additional languages can be added for new releases. SOS accepts community contributions for language files provided that the contributor:

  • provides quality assurance for a correct translation and
  • commits to on-going language support in subsequent releases for a minimum of one year.

Language File Location

Language files are included with the JOC Cockpit .war archive file that is extracted on start-up of the service. The extraction is performed to the temp folder that can be found in the following directory hierarchy:

  • When starting JOC Cockpit a temporary directory is created with the temp folder:

  • Language files with the following folder structure can be found in the temporary directory hierarchy:

Language File Development

Adding new Language Files

  • Open the locales.js file to find a single array to which you add a new language by specifying country code, language code, country name and language name like this:
    • {
        "en": {
          "lang": "en",
          "country": "US",
          "name": "English"
        "fr": {
          "lang": "fr",
          "country": "FR",
          "name": "French"
        "de": {
          "lang": "de",
          "country": "DE",
          "name": "German"
        "ja": {
          "lang": "ja",
          "country": "JA",
          "name": "Japanese"
  • Create a new general language file - preferably by starting from a copy of the English general language file en.json and the naming convention <language code>.json.
    • Translate the assignments for each line of the general language file.
  • Create a new editor language file - preferably by starting from a copy of the English editor language file json-editor-text_en.json and the naming convention json-editor-text_<language code>.json.
    • Translate assignments for each line of the editor language file.

Editing Files

  • Language files use a JSON format and can be modified with any text editor.
  • Be careful when it comes to use of quotes and commas that have to be in place as shown in the examples. A missing quote or comma invalidates a language file.
  • Validate your language files with a JSON validator utility - a number of online resources are available.

Development Cycle

  • Language files are read by JOC Cockpit on first use. Any changes to a language file after this point in time are not considered.
  • Therefore the following development cycle applies:
    1. Store the working copy of your general language file and editor language file in a folder outside of the JOC Cockpit installation.
    2. Start the JOC Cockpit service/daemon.
    3. Copy the your language files and the locales.json file to the target folder as indicated with the section above.
    4. Log in to JOC Cockpit and optionally modify your user profile to use the newly added language. Any new language added to locales.json should become available with your profile.
    5. Test your changes to the language files.
    6. Any modifications to the language files are not immediately considered but require a restart of JOC Cockpit as in step 2).

Language File Build Integration