Application Localizer

Application Localizer package that helps with localizing applications

Pseudo Locale Generator Web Site

uses Intl MessageFormat Parser that parses ICU Message strings into an AST.

tested with Intl MessageFormat that formats ICU Message strings with number, date, plural, and select placeholders to create localized messages.

used by vscode-app-localizer vscode extension

Features

• Locale validator - Check for missing labels - Multi-file locale support (see example below) _ Polymer file structure _ Angular flat file structure
• Pseudo locale generator (char mapping is taken from pseudolocalization-tool)
  • Accents on letters
  • Longer sentence
  • Longer word
  • Right-to-Left
  • Enclose in exclamations
  • Enclose in brackets - Support ICU Message syntax
• Cross-platform

Install

npm install app-localizer

API Reference

Pseudo locale generator options

• expander Sentence expand factor 0.3 = 30%
• wordexpander Word expand factor 0.5 = 50%
• brackets Enclose sentence in brackets
• exclamations Enclose sentence in exclamations
• accents Convert letter to its accent version
• rightToLeft RTL writing systems
• forceException Force throwing syntax exception if any

Locale validator options

• filePathPattern Locale files path (supports node glob pattern)
• multiFile Each locale is in separate file in the same folder
• fileStructure Structure of locale file content (polymer or angular.flat file structure)

Usage

Locale validator

Validate locale file(s) (e.g. gulp)

const gulp = require("gulp");
const localizer = require("app-localizer");

gulp.task("validateLocales", function validateLocales(callback) {
  localizer.validateLocales(
    "locales/app1/",
    { multiFile: true, fileStructure: "polymer" },
    undefined,
    result => {
      // result contains missing labels if any
      callback(result);
    }
  );
});

gulp.task("validateMultipleLocales", function validateMultipleLocales(
  callback
) {
  localizer.validateMultipleLocales(
    ["locales/app1/", "locales/app2/"],
    { multiFile: true, fileStructure: "polymer" },
    undefined,
    result => {
      // result contains missing labels if any
      callback(result);
    }
  );
});

Pseudo locale generator

Generate pseudo locale json file from source (gulp)

const gulp = require("gulp");
const localizer = require("app-localizer");
const rename = require("gulp-rename");

gulp.task("locales", function generatePseudoLocale() {
  gulp
    .src("app/locales/en-us.json")
    .pipe(rename("pseudo.json"))
    .pipe(
      localizer.pseudoLocalize({
        expander: 0.2,
        accents: true,
        rightToLeft: false,
        exclamations: true,
        brackets: true,
        wordexpander: 0.5,
        forceException: false,
        pseudoLocaleName: "en-us"
      })
    )
    .pipe(gulp.dest("dist/locales/"));
});

Generate pseudo locale json file from source (grunt)

const localizer = require("app-localizer");

module.exports = function gruntEntry(grunt) {
  grunt.initConfig({
    pkg: grunt.file.readJSON("package.json"),
    pseudo: {
      options: {
        expander: 0.2,
        exclamations: true,
        brackets: true,
        accents: true,
        rightToLeft: false,
        wordexpander: 0.5,
        forceException: false,
        pseudoLocaleName: "en-us"
      },
      dist: {
        files: {
          "app/locales/pseudo.json": ["app/locales/en-us.json"]
        }
      }
    }
  });

  grunt.registerMultiTask("pseudo", "Pseudolocalize locale", function() {
    const options = this.options();
    this.files.forEach(file => {
      if (file.dest) {
        file.src.forEach(source => {
          const text = grunt.file.read(source);
          const result = localizer.pseudoLocalizeContent(options, text);

          grunt.file.write(file.dest, result);
        });
      }
    });
  });
};

Generate pseudo pseudo text (browser)

npm install intl-messageformat-parser
npm install app-localizer

	<script type="text/javascript" src="/node_modules/intl-messageformat-parser/dist/parser.js" defer></script>
	<script type="text/javascript" src="/node_modules/app-localizer/localizer.js" defer></script>
	<script type="text/javascript">
		function transform() {
			'use strict';
			const text = AppLocalizer.toPseudoText('some text', { expander: 0.5, accents: true, wordexpander: 0.2 }, IntlMessageFormatParser);
			console.log(text);
		}
	</script>

Generate pseudo locale text (try it)

transforms

!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_abcdefghijklmnopqrstuvwxyz|~

into

¡″♯€‰⅋´{}⁎⁺،‐·⁄⓪①②③④⑤⑥⑦⑧⑨∶⁏≤≂≥¿՞ÅƁÇÐÉƑĜĤÎĴĶĻṀÑÖÞǪŔŠŢÛṼŴẊÝŽ⁅∖⁆˄‿‵åƀçðéƒĝĥîĵķļɱñöþǫŕšţûṽŵẋýž¦˞

const localizer = require("app-localizer");

const pseudoText = localizer.toPseudoText(text, {
  expander: 0.2,
  exclamations: true,
  brackets: true,
  accents: true,
  rightToLeft: false,
  wordexpander: 0.5,
  forceException: false
});

Single-File locale example

file with locales /locales/locale.json

{
  "en-us": {
    "label3": "blah3 {token}",
    "label1": "blah1",
    "label2": "blah2",
    "label4": "blah4"
  },
  "de-de": {
    "label3": "blah3 {token}",
    "label1": "blah1",
    "label2": "blah2",
    "label4": "blah4"
  }
}

Multi-File locale example

locale files should be in the same folder

file with en-us locale /locales/en-us.json (polymer file structure)

{
  "en-us": {
    "label3": "blah3 {token}",
    "label1": "blah1",
    "label2": "blah2",
    "label4": "blah4"
  }
}

file with fr locale /locales/fr.locale.json (angular flat file structure)

{
  "label1": "blah1 {{token}}",
  "label2": "blah2",
  "label5": "blah3",
  "label3": "blah4"
}

Change Log

Change Log

License

MIT