i18n-loader.js
77 lines
| 1 | const i18n = require( '@wordpress/i18n' ); |
| 2 | const { default: md5 } = require( 'md5-es' ); |
| 3 | |
| 4 | const locationMap = { |
| 5 | plugin: 'plugins/', |
| 6 | theme: 'themes/', |
| 7 | core: '', |
| 8 | }; |
| 9 | |
| 10 | const hasOwn = ( obj, prop ) => Object.prototype.hasOwnProperty.call( obj, prop ); |
| 11 | |
| 12 | module.exports = { |
| 13 | state: { |
| 14 | baseUrl: null, |
| 15 | locale: null, |
| 16 | domainMap: {}, |
| 17 | domainPaths: {}, |
| 18 | }, |
| 19 | |
| 20 | /** |
| 21 | * Download and register translations for a bundle. |
| 22 | * |
| 23 | * @param {string} path - Bundle path being fetched. May have a query part. |
| 24 | * @param {string} domain - Text domain to register into. |
| 25 | * @param {string} location - Location for the translation: 'plugin', 'theme', or 'core'. |
| 26 | * @return {Promise} Resolved when the translations are registered, or rejected with an `Error`. |
| 27 | */ |
| 28 | async downloadI18n( path, domain, location ) { |
| 29 | const state = this.state; |
| 30 | if ( ! state || typeof state.baseUrl !== 'string' ) { |
| 31 | throw new Error( 'wp.jpI18nLoader.state is not set' ); |
| 32 | } |
| 33 | |
| 34 | // "en_US" is the default, no translations are needed. |
| 35 | if ( state.locale === 'en_US' ) { |
| 36 | return; |
| 37 | } |
| 38 | |
| 39 | // Check that fetch is available. |
| 40 | if ( typeof fetch === 'undefined' ) { |
| 41 | throw new Error( 'Fetch API is not available.' ); |
| 42 | } |
| 43 | |
| 44 | // Extract any query part and hash the script name like WordPress does. |
| 45 | const pathPrefix = hasOwn( state.domainPaths, domain ) ? state.domainPaths[ domain ] : ''; |
| 46 | let hash, query; |
| 47 | const i = path.indexOf( '?' ); |
| 48 | if ( i >= 0 ) { |
| 49 | hash = md5.hash( pathPrefix + path.substring( 0, i ) ); |
| 50 | query = path.substring( i ); |
| 51 | } else { |
| 52 | hash = md5.hash( pathPrefix + path ); |
| 53 | query = ''; |
| 54 | } |
| 55 | |
| 56 | // Download. |
| 57 | const locationAndDomain = hasOwn( state.domainMap, domain ) |
| 58 | ? state.domainMap[ domain ] |
| 59 | : locationMap[ location ] + domain; |
| 60 | const res = await fetch( |
| 61 | // prettier-ignore |
| 62 | `${ state.baseUrl }${ locationAndDomain }-${ state.locale }-${ hash }.json${ query }` |
| 63 | ); |
| 64 | if ( ! res.ok ) { |
| 65 | throw new Error( `HTTP request failed: ${ res.status } ${ res.statusText }` ); |
| 66 | } |
| 67 | const data = await res.json(); |
| 68 | |
| 69 | // Extract the messages from the file and register them. |
| 70 | const localeData = hasOwn( data.locale_data, domain ) |
| 71 | ? data.locale_data[ domain ] |
| 72 | : data.locale_data.messages; |
| 73 | localeData[ '' ].domain = domain; |
| 74 | i18n.setLocaleData( localeData, domain ); |
| 75 | }, |
| 76 | }; |
| 77 |