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/**
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/**
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 * Tests for \tool_langimport\locale class.
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 * Tests for \tool_langimport\locale class.
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 *
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 *
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 * @package    tool_langimport
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 * @package    tool_langimport
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 * @category   test
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 * @category   test
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 * @coversDefaultClass \tool_langimport\locale
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 * @covers \tool_langimport\locale
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 * @copyright  2018 Université Rennes 2 {@link https://www.univ-rennes2.fr}
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 * @copyright  2018 Université Rennes 2 {@link https://www.univ-rennes2.fr}
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 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 */
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 */
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class locale_test extends \advanced_testcase {
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final class locale_test extends \advanced_testcase {
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    /** @var string Locale */
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    protected string $locale;
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    #[\Override]
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    public function setUp(): void {
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        parent::setUp();
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        $this->locale = \core\locale::get_locale();
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    }
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    #[\Override]
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    public function tearDown(): void {
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        parent::tearDown();
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        \core\locale::set_locale(LC_ALL, $this->locale);
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    }
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    /**
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    /**
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     * Test that \tool_langimport\locale::check_locale_availability() works as expected.
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     * Test that \tool_langimport\locale::check_locale_availability() works as expected.
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     *
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     * @covers ::check_locale_availability
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     * @return void
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     */
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     */
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    public function test_check_locale_availability() {
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    public function test_check_locale_availability(): void {
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        // Create a mock of set_locale() method to simulate :
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        // Create a mock of set_locale() method to simulate:
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        // - first setlocale() call which backup current locale
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        // - get_locale() call which backup current locale
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        // - second setlocale() call which try to set new 'es' locale
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        // - first set_locale() call which try to set new 'es' locale
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        // - third setlocale() call which restore locale.
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        // - second set_locale() call which restore locale.
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        $mock = $this->getMockBuilder(locale::class)
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        $mock = $this->getMockBuilder(locale::class)
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            ->onlyMethods(['set_locale'])
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            ->onlyMethods([
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                'get_locale',
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                'set_locale',
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            ])
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            ->getMock();
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            ->getMock();
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        $mock->method('get_locale')->will($this->onConsecutiveCalls('en'));
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        $mock->method('set_locale')->will($this->onConsecutiveCalls('en', 'es', 'en'));
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        $mock->method('set_locale')->will($this->onConsecutiveCalls('es', 'en'));
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        // Test what happen when locale is available on system.
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        // Test what happen when locale is available on system.
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        $result = $mock->check_locale_availability('en');
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        $result = $mock->check_locale_availability('en');
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        $this->assertTrue($result);
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        $this->assertTrue($result);
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        // Create a mock of set_locale() method to simulate :
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        // Create a mock of set_locale() method to simulate:
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        // - first setlocale() call which backup current locale
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        // - get_locale() call which backup current locale
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        // - second setlocale() call which fail to set new locale
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        // - first set_locale() call which fail to set new locale
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        // - third setlocale() call which restore locale.
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        // - second set_locale() call which restore locale.
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        $mock = $this->getMockBuilder(locale::class)
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            ->onlyMethods([
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                'get_locale',
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        $mock = $this->getMockBuilder(locale::class)
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                'set_locale',
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            ])
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            ->onlyMethods(['set_locale'])
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            ->getMock();
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            ->getMock();
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        $mock->method('get_locale')->will($this->onConsecutiveCalls('en'));
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        $mock->method('set_locale')->will($this->onConsecutiveCalls('en', false, 'en'));
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        $mock->method('set_locale')->will($this->onConsecutiveCalls(false, 'en'));
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        // Test what happen when locale is not available on system.
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        // Test what happen when locale is not available on system.
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        $result = $mock->check_locale_availability('en');
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        $result = $mock->check_locale_availability('en');
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        $this->assertFalse($result);
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        $this->assertFalse($result);
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        // Test an invalid parameter.
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        // Test an invalid parameter.
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        $locale = new locale();
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        $this->expectException(\coding_exception::class);
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        $locale->check_locale_availability('');
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    }
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    /**
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     * Test \tool_langimport\locale::set_locale() own logic.
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     *
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     * We have to explicitly test set_locale() own logic and results,
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     * that effectively sets the current locale, so we need to restore
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     * the original locale after every test (ugly, from a purist unit test
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     * point of view, but needed).
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     *
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     * @dataProvider set_locale_provider
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     * @covers ::set_locale
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     *
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     * @param string $set locale string to be set.
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     * @param string $ret expected results returned after setting the locale.
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     */
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    public function test_set_locale(string $set, string $ret) {
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        // Make set_locale() public.
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        $loc = new locale();
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        $rc = new \ReflectionClass(locale::class);
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        $rm = $rc->getMethod('set_locale');
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        // Capture current locale for later restore (funnily, using the set_locale() method itself.
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        $originallocale = $rm->invokeArgs($loc, [LC_ALL, 0]);
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        // Assert we get the locale defined as expected.
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        $this->assertEquals($ret, $rm->invokeArgs($loc, [LC_ALL, $set]));
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        // We have finished, restore the original locale, so this doesn't affect other tests at distance.
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        // (again, funnily, using the very same set_locale() method).
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        $rm->invokeArgs($loc, [LC_ALL, $originallocale]);
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    }
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    /**
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     * Data provider for test_set_locale().
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     *
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     * Provides a locale to be set (as 'set') and a expected return value (as 'ret'). Note that
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     * some of the locales are OS dependent, so only the ones matching the OS will be provided.
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     *
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     * We make extensive use of the en_AU.UTF-8/English_Australia.1252 locale that is mandatory to
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     * be installed in any system running PHPUnit tests.
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     */
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    public function set_locale_provider(): array {
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        // Let's list the allowed categories by OS.
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        $bsdallowed = ['LC_COLLATE', 'LC_CTYPE', 'LC_MESSAGES', 'LC_MONETARY', 'LC_NUMERIC', 'LC_TIME'];
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        $winallowed = ['LC_COLLATE', 'LC_CTYPE', 'LC_MONETARY', 'LC_NUMERIC', 'LC_TIME'];
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        $linuxallowed = [
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            'LC_COLLATE', 'LC_CTYPE', 'LC_MESSAGES', 'LC_MONETARY', 'LC_NUMERIC', 'LC_TIME',
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            'LC_PAPER', 'LC_NAME', 'LC_ADDRESS', 'LC_TELEPHONE', 'LC_MEASUREMENT', 'LC_IDENTIFICATION'
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        ];
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        // The base locale name is also OS dependent.
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        $baselocale = get_string('locale', 'langconfig');
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        if (PHP_OS_FAMILY === 'Windows') {
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            $baselocale = get_string('localewin', 'langconfig');
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        }
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        // Here we'll go accumulating cases to be provided.
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        $cases = [];
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        // First, the simplest case, just pass a locale name, without categories.
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        $cases['rawlocale'] = [
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            'set' => $baselocale,
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            'ret' => $baselocale,
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        ];
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        // Now, let's fill ALL LC categories, we should get back the locale name if all them are set with same value.
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        // Note that this case is the one that, under Linux only, covers the changes performed to the set_locale() method.
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        // Pick the correct categories depending on the OS.
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        $oscategories = $bsdallowed; // Default to BSD/Dawrwin ones because they are the standard 6 supported by PHP.
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        if (PHP_OS_FAMILY === 'Windows') {
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            $oscategories = $winallowed;
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        } else if (PHP_OS_FAMILY === 'Linux') {
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            $oscategories = $linuxallowed;
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        }
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        $localestr = '';
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        foreach ($oscategories as $category) {
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            // Format is different by OS too, so let build the string conditionally.
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            if (PHP_OS_FAMILY === 'BSD' || PHP_OS_FAMILY === 'Darwin') {
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                // BSD uses slashes (/) separated list of the 6 values in exact order.
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                $localestr .= '/' . $baselocale;
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            } else {
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                // Linux/Windows use semicolon (;) separated list of category=value pairs.
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                $localestr .= ';' . $category . '=' . $baselocale;
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            }
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        }
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        $cases['allcategories'] = [
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            'set' => trim($localestr, ';/'),
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            'ret' => $baselocale,
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        ];
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        $locale = new locale();