feat(@angular/cli): add new xi18n parameters --locale and --outFile

packages/@angular/cli/commands/xi18n.ts

@@ -4,6 +4,8 @@ export interface Xi18nOptions {
   outputPath?: string;
   verbose?: boolean;
   i18nFormat?: string;
+  locale?: string;
+  outFile?: string;
 }
 
 const Xi18nCommand = Command.extend({
@@ -42,7 +44,19 @@ const Xi18nCommand = Command.extend({
       type: String,
       aliases: ['a'],
       description: 'Specifies app name to use.'
-    }
+    },
+    {
+      name: 'locale',
+      type: String,
+      aliases: ['l'],
+      description: 'Specifies the source language of the application.'
+    },
+    {
+      name: 'out-file',
+      type: String,
+      aliases: ['of'],
+      description: 'Name of the file to output.'
+    },
   ],
   run: function (commandOptions: any) {
     const {Extracti18nTask} = require('../tasks/extract-i18n');

packages/@angular/cli/models/webpack-configs/xi18n.ts

@@ -5,7 +5,9 @@ export const getWebpackExtractI18nConfig = function(
   projectRoot: string,
   appConfig: any,
   genDir: string,
-  i18nFormat: string): any {
+  i18nFormat: string,
+  locale: string,
+  outFile: string): any {
 
   let exclude: string[] = [];
   if (appConfig.test) {
@@ -18,7 +20,9 @@ export const getWebpackExtractI18nConfig = function(
         tsConfigPath: path.resolve(projectRoot, appConfig.root, appConfig.tsconfig),
         exclude: exclude,
         genDir: genDir,
-        i18nFormat: i18nFormat
+        i18nFormat: i18nFormat,
+        locale: locale,
+        outFile: outFile,
       })
     ]
   };

packages/@angular/cli/models/webpack-xi18n-config.ts

@@ -9,6 +9,8 @@ export interface XI18WebpackOptions {
   genDir?: string;
   buildDir?: string;
   i18nFormat?: string;
+  locale?: string;
+  outFile?: string;
   verbose?: boolean;
   progress?: boolean;
   app?: string;
@@ -35,7 +37,9 @@ export class XI18nWebpackConfig extends NgCliWebpackConfig {
       getWebpackExtractI18nConfig(projectRoot,
         this.appConfig,
         this.extractOptions.genDir,
-        this.extractOptions.i18nFormat);
+        this.extractOptions.i18nFormat,
+        this.extractOptions.locale,
+        this.extractOptions.outFile);
 
     this.config = webpackMerge([this.config, extractI18nConfig]);
     return this.config;

packages/@angular/cli/tasks/extract-i18n.ts

@@ -21,6 +21,8 @@ export const Extracti18nTask = Task.extend({
       genDir,
       buildDir,
       i18nFormat: runTaskOptions.i18nFormat,
+      locale: runTaskOptions.locale,
+      outFile: runTaskOptions.outFile,
       verbose: runTaskOptions.verbose,
       progress: runTaskOptions.progress,
       app: runTaskOptions.app,

packages/@ngtools/webpack/src/extract_i18n_plugin.ts

@@ -2,7 +2,7 @@ import * as ts from 'typescript';
 import * as path from 'path';
 import * as fs from 'fs';
 
-import {__NGTOOLS_PRIVATE_API_2} from '@angular/compiler-cli';
+import {__NGTOOLS_PRIVATE_API_2, VERSION} from '@angular/compiler-cli';
 
 import {Tapable} from './webpack';
 import {WebpackResourceLoader} from './resource_loader';
@@ -12,6 +12,8 @@ export interface ExtractI18nPluginOptions {
   basePath?: string;
   genDir?: string;
   i18nFormat?: string;
+  locale?: string;
+  outFile?: string;
   exclude?: string[];
 }
 
@@ -33,6 +35,8 @@ export class ExtractI18nPlugin implements Tapable {
   private _program: ts.Program;
 
   private _i18nFormat: string;
+  private _locale: string;
+  private _outFile: string;
 
   constructor(options: ExtractI18nPluginOptions) {
     this._setupOptions(options);
@@ -117,6 +121,20 @@ export class ExtractI18nPlugin implements Tapable {
     if (options.hasOwnProperty('i18nFormat')) {
       this._i18nFormat = options.i18nFormat;
     }
+    if (options.hasOwnProperty('locale')) {
+      if (VERSION.major === '2') {
+        console.warn("The option '--locale' is only available on the xi18n command"
+          + ' starting from Angular v4, please update to a newer version.', '\n\n');
+      }
+      this._locale = options.locale;
+    }
+    if (options.hasOwnProperty('outFile')) {
+      if (VERSION.major === '2') {
+        console.warn("The option '--out-file' is only available on the xi18n command"
+          + ' starting from Angular v4, please update to a newer version.', '\n\n');
+      }
+      this._outFile = options.outFile;
+    }
   }
 
   apply(compiler: any) {
@@ -156,6 +174,8 @@ export class ExtractI18nPlugin implements Tapable {
           host: this._compilerHost,
           angularCompilerOptions: this._angularCompilerOptions,
           i18nFormat: this._i18nFormat,
+          locale: this._locale,
+          outFile: this._outFile,
 
           readResource: (path: string) => this._resourceLoader.get(path)
         });

tests/e2e/tests/i18n/extract-locale.ts

@@ -0,0 +1,21 @@
+import { join } from 'path';
+import { ng } from '../../utils/process';
+import {
+  expectFileToExist, writeFile,
+  expectFileToMatch
+} from '../../utils/fs';
+
+
+export default function() {
+  return ng('generate', 'component', 'i18n-test')
+    .then(() => writeFile(
+      join('src/app/i18n-test', 'i18n-test.component.html'),
+      '<p i18n>Hello world</p>'))
+    .then(() => ng('xi18n', '--locale', 'fr'))
+    .then((output) => {
+      if (!output.stdout.match(/starting from Angular v4/)) {
+        expectFileToExist(join('src', 'messages.xlf'));
+        expectFileToMatch(join('src', 'messages.xlf'), /source-language="fr"/)
+      }
+    });
+}

tests/e2e/tests/i18n/extract-outfile.ts

@@ -0,0 +1,21 @@
+import {join} from 'path';
+import {ng} from '../../utils/process';
+import {
+  expectFileToExist, writeFile,
+  expectFileToMatch
+} from '../../utils/fs';
+
+
+export default function() {
+  return ng('generate', 'component', 'i18n-test')
+    .then(() => writeFile(
+      join('src/app/i18n-test', 'i18n-test.component.html'),
+      '<p i18n>Hello world</p>'))
+    .then(() => ng('xi18n', '--out-file', 'messages.fr.xlf'))
+    .then((output) => {
+      if (!output.stdout.match(/starting from Angular v4/)) {
+        expectFileToExist(join('src', 'messages.fr.xlf'));
+        expectFileToMatch(join('src', 'messages.fr.xlf'), /Hello world/);
+      }
+    });
+}