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move base i18nservice out to jslib
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7933746d82
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102
src/services/i18n.service.ts
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102
src/services/i18n.service.ts
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@ -0,0 +1,102 @@
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import { I18nService as I18nServiceAbstraction } from '../abstractions/i18n.service';
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export class I18nService implements I18nServiceAbstraction {
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locale: string;
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translationLocale: string;
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collator: Intl.Collator;
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// First locale is the default (English)
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protected supportedTranslationLocales: string[] = ['en'];
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protected inited: boolean;
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protected defaultMessages: any = {};
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protected localeMessages: any = {};
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constructor(protected systemLanguage: string, protected localesDirectory: string) { }
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async init(locale?: string) {
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if (this.inited) {
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throw new Error('i18n already initialized.');
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}
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if (this.supportedTranslationLocales == null || this.supportedTranslationLocales.length === 0) {
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throw new Error('supportedTranslationLocales not set.');
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}
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this.inited = true;
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this.locale = this.translationLocale = locale != null ? locale : this.systemLanguage;
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this.collator = new Intl.Collator(this.locale);
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if (this.supportedTranslationLocales.indexOf(this.translationLocale) === -1) {
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this.translationLocale = this.translationLocale.slice(0, 2);
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if (this.supportedTranslationLocales.indexOf(this.translationLocale) === -1) {
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this.translationLocale = this.supportedTranslationLocales[0];
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}
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}
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if (this.localesDirectory != null) {
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await this.loadMessages(this.localesDirectory, this.translationLocale, this.localeMessages);
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if (this.translationLocale !== this.supportedTranslationLocales[0]) {
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await this.loadMessages(this.localesDirectory, this.supportedTranslationLocales[0],
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this.defaultMessages);
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}
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}
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}
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t(id: string, p1?: string, p2?: string, p3?: string): string {
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return this.translate(id, p1, p2, p3);
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}
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translate(id: string, p1?: string, p2?: string, p3?: string): string {
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let result: string;
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if (this.localeMessages.hasOwnProperty(id) && this.localeMessages[id]) {
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result = this.localeMessages[id];
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} else if (this.defaultMessages.hasOwnProperty(id) && this.defaultMessages[id]) {
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result = this.defaultMessages[id];
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} else {
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result = '';
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}
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if (result !== '') {
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if (p1 != null) {
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result = result.split('__$1__').join(p1);
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}
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if (p2 != null) {
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result = result.split('__$2__').join(p2);
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}
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if (p3 != null) {
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result = result.split('__$3__').join(p3);
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}
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}
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return result;
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}
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private async loadMessages(localesDir: string, locale: string, messagesObj: any): Promise<any> {
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const formattedLocale = locale.replace('-', '_');
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const file = await fetch(localesDir + formattedLocale + '/messages.json');
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const locales = await file.json();
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for (const prop in locales) {
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if (!locales.hasOwnProperty(prop)) {
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continue;
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}
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messagesObj[prop] = locales[prop].message;
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if (locales[prop].placeholders) {
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for (const placeProp in locales[prop].placeholders) {
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if (!locales[prop].placeholders.hasOwnProperty(placeProp) ||
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!locales[prop].placeholders[placeProp].content) {
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continue;
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}
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const replaceToken = '\\$' + placeProp.toUpperCase() + '\\$';
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let replaceContent = locales[prop].placeholders[placeProp].content;
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if (replaceContent === '$1' || replaceContent === '$2' || replaceContent === '$3') {
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replaceContent = '__' + replaceContent + '__';
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}
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messagesObj[prop] = messagesObj[prop].replace(new RegExp(replaceToken, 'g'), replaceContent);
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}
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}
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}
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}
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}
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@ -9,6 +9,7 @@ export { ContainerService } from './container.service';
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export { CryptoService } from './crypto.service';
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export { EnvironmentService } from './environment.service';
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export { FolderService } from './folder.service';
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export { I18nService } from './i18n.service';
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export { LockService } from './lock.service';
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export { PasswordGenerationService } from './passwordGeneration.service';
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export { SearchService } from './search.service';
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