Convert l10n .json files to .html

l10n-json-to-html.js

module.exports = function (grunt) {
  grunt.registerMultiTask('l10n-json-to-html', 'Convert l10n JSON files to HTML', function () {
    var done = this.async();
    var yeoman = grunt.config('yeoman');
    var fileCount = 0;

    this.files.forEach(function (file) {
      var src = file.src[0];
      // Convert source file to something like '.tmp/i18n/{locale}/{file}.html'.
      var dst = src.replace(yeoman.dist, yeoman.tmp).replace(/\.json$/i, '.html');
      var data = grunt.file.readJSON(src);
      var content = [];

      Object.keys(data).forEach(function (key) {
        var value = data[key];
        // Ignore values with empty keys (l10n metadata) or empty values (no translations).
        if (key.trim() !== '' && value.trim() !== '') {
          content.push(value);
        }
      });

      // Convert from an array to a string.
      content = content.join('\n\n').trim();

      // Only write file if there are at least some translations.
      if (content.length !== 0) {
        fileCount += 1;
        grunt.verbose.writeln('Writing %s...', dst);
        grunt.file.write(dst, content + '\n');
      }
    });

    grunt.log.writeln('Wrote %d files', fileCount);
    done();
  });

  grunt.config('l10n-json-to-html', {
    dist: {
      files: [
        {
          expand: true,
          src: [
            '<%= yeoman.dist %>/i18n/*/*.json'
          ]
        }
      ]
    }
  });
};