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lib/pkp/classes/i18n/LocaleServiceProvider.php

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+<?php
+
+declare(strict_types=1);
+
+/**
+ * @defgroup i18n I18N
+ * Implements localization concerns such as locale files, time zones, and country lists.
+ */
+
+/**
+ * @file classes/i18n/LocaleServiceProvider.php
+ *
+ * Copyright (c) 2014-2021 Simon Fraser University
+ * Copyright (c) 2000-2021 John Willinsky
+ * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
+ *
+ * @class LocaleServiceProvider
+ *
+ * @ingroup i18n
+ *
+ * @brief Service provider for the i18n features
+ */
+
+namespace PKP\i18n;
+
+use Illuminate\Contracts\Container\Container;
+use Illuminate\Contracts\Support\DeferrableProvider;
+use Illuminate\Contracts\Translation\Translator;
+use Illuminate\Support\ServiceProvider;
+use PKP\facades\Locale as LocaleFacade;
+use PKP\i18n\interfaces\LocaleInterface;
+use PKP\i18n\translation\IsoCodesTranslationDriver;
+use Sokil\IsoCodes\IsoCodesFactory;
+
+class LocaleServiceProvider extends ServiceProvider implements DeferrableProvider
+{
+    /**
+     * Register the service provider.
+     *
+     */
+    public function register(): void
+    {
+        $this->app->singleton(LocaleInterface::class, fn () => $this->app->make(Locale::class));
+        // Replaces the default Laravel translator
+        $this->app->alias(LocaleInterface::class, 'translator');
+        $this->app->alias(LocaleInterface::class, Translator::class);
+
+        // Reuses the instance and keeps the user selected language across the application
+        $this->app->singleton(
+            IsoCodesFactory::class,
+            fn (Container $container, array $params): IsoCodesFactory => new IsoCodesFactory(
+                null,
+                new IsoCodesTranslationDriver($params['locale'] ?? LocaleFacade::getLocale())
+            )
+        );
+    }
+
+    /**
+     * Get the services provided by the provider.
+     *
+     */
+    public function provides(): array
+    {
+        return [LocaleInterface::class, Translator::class, 'translator'];
+    }
+}