grunt-extract-cldr-data
v4.1.0
Published
Extract CLDR data and transform it for use in JavaScript.
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Readme
grunt-extract-cldr-data
Extract CLDR data and transform it for use in JavaScript. This a Grunt plugin for the formatjs-extract-cldr-data.
Getting Started
This plugin requires Grunt.
If you haven't used Grunt before, be sure to check out the Getting Started guide, as it explains how to create a Gruntfile as well as install and use Grunt plugins. Once you're familiar with that process, you may install this plugin with this command:
npm install grunt-extract-cldr-data --save-dev
Once the plugin has been installed, it may be enabled inside your Gruntfile with this line of JavaScript:
grunt.loadNpmTasks('grunt-extract-cldr-data');
The "extract_cldr_data" task
Overview
In your project's Gruntfile, add a section named extract_cldr_data
to the data object passed into grunt.initConfig()
.
grunt.initConfig({
extract_cldr_data: {
options: {
// Task-specific options go here.
},
your_target: {
// Target-specific file lists and/or options go here.
},
},
})
dest
Each target must supply a dest
property for the file path where the generated files should be outputted to. If dest
is a directory, then a file will be generated per locale. If dest
is a .js
file, then only one file will be generated and it will contain the data for all options.locales
.
Options
options.locales
Type: Array
Default value: All CLDR locales
An array of language tag strings strings for the locales to extract data for; e.g., ['en', 'fr', 'zh-Hant-HK', ...]
options.pluralRules
Type: Boolean
Default value: false
Whether or not the pluralRuleFunction
CLDR data should be extracted for each of the given locales
.
options.relativeFields
Type: Boolean
Default value: false
Whether or not the relative-time fields
CLDR data should be extracted for each of the given locales
.
options.prelude
Type: String
Default value: ""
A string that will be prepended to each of the generated files. This can be a code comment, or actual JavaScript code.
options.wrapEntry
Type: Function
Default value: undefined
A function that will be passed a string of serialized data for each each option.locales
. This function must return a string. This is useful for wrapping the locale data with JavaScript code; e.g., assigning it to a var
.
Usage Examples
Extract Plural Rule Functions
In this example, the CLDR plural rule functions for all locales will be extracted and output into a single file which wraps each locale's data in a function call:
grunt.initConfig({
extract_cldr_data: {
all: {
dest: 'locale-data/locales.js',
options: {
pluralRules: true,
prelude: [
'// GENERATED FILE',
'var IntlMessageFormat = require("intl-messageformat");\n\n'
].join('\n'),
wrapEntry: function (serialized) {
return 'IntlMessageFormat.__addLocaleData(' + serialized + ');';
}
}
},
},
})
Extract Fields and Plural Rule Functions
In this example, CLDR relative-time fields and plural rule functions for just English and French will be extracted and output into a one file per locale. Both of the locale's data is also wrapped in a function call:
grunt.initConfig({
extract_cldr_data: {
en_and_fr: {
dest: 'locale-data/',
options: {
locales : ['en-US', 'fr-FR'],
pluralRules : true,
relativeFields: true,
wrapEntry: function (serialized) {
return 'IntlRelativeFormat.__addLocaleData(' + serialized + ');';
}
}
},
},
})
Note: The locale-data/
directory will contain two files: en.js
, and fr.js
. This is because the hierarchy in the language tags is leveraged to de-duplicate data at the language level.
Contributing
In lieu of a formal style guide, take care to maintain the existing coding style. Add unit tests for any new or changed functionality. Lint and test your code using Grunt.
Release History
1.0.0
: Initial release.1.0.1
: Update cldr package to fix issue with plural rule functions.1.1.0
: Update and lock-down cldr package to latest.2.0.0
: Refactored to use formatjs-extract-cldr-data.2.1.0
: Upgrade to[email protected]
.3.0.0
: Upgrade to[email protected]
.4.0.0
: Upgrade to[email protected]
.4.1.0
: Upgrade to[email protected]
.
License
This software is free to use under the Yahoo! Inc. BSD license. See the LICENSE file for license text and copyright information.