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: /usr/share/php/PhpMyAdmin/MoTranslator/ [ drwxr-xr-x ]
name : Loader.php
 <?php
/*
    Copyright (c) 2005 Steven Armstrong <sa at c-area dot ch>
    Copyright (c) 2009 Danilo Segan <danilo@kvota.net>
    Copyright (c) 2016 Michal Čihař <michal@cihar.com>

    This file is part of MoTranslator.

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License along
    with this program; if not, write to the Free Software Foundation, Inc.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
declare(strict_types=1);

namespace PhpMyAdmin\MoTranslator;

use function array_push;
use function file_exists;
use function getenv;
use function in_array;
use function preg_match;
use function sprintf;

class Loader
{
    /**
     * Loader instance.
     *
     * @static
     * @var Loader
     */
    private static $instance;

    /**
     * Default gettext domain to use.
     *
     * @var string
     */
    private $defaultDomain = '';

    /**
     * Configured locale.
     *
     * @var string
     */
    private $locale = '';

    /**
     * Loaded domains.
     *
     * @var array
     */
    private $domains = [];

    /**
     * Bound paths for domains.
     *
     * @var array
     */
    private $paths = ['' => './'];

    /**
     * Returns the singleton Loader object.
     *
     * @return Loader object
     */
    public static function getInstance()
    {
        if (empty(self::$instance)) {
            self::$instance = new self();
        }

        return self::$instance;
    }

    /**
     * Loads global localizaton functions.
     */
    public static function loadFunctions()
    {
        require_once __DIR__ . '/functions.php';
    }

    /**
     * Figure out all possible locale names and start with the most
     * specific ones.  I.e. for sr_CS.UTF-8@latin, look through all of
     * sr_CS.UTF-8@latin, sr_CS@latin, sr@latin, sr_CS.UTF-8, sr_CS, sr.
     *
     * @param string $locale Locale code
     *
     * @return array list of locales to try for any POSIX-style locale specification
     */
    public static function listLocales($locale)
    {
        $localeNames = [];

        if ($locale) {
            if (preg_match(
                '/^(?P<lang>[a-z]{2,3})'      // language code
                . '(?:_(?P<country>[A-Z]{2}))?'           // country code
                . '(?:\\.(?P<charset>[-A-Za-z0-9_]+))?'   // charset
                . '(?:@(?P<modifier>[-A-Za-z0-9_]+))?$/', // @ modifier
                $locale,
                $matches
            )) {
                $lang = $matches['lang'] ?? null;
                $country = $matches['country'] ?? null;
                $charset = $matches['charset'] ?? null;
                $modifier = $matches['modifier'] ?? null;

                if ($modifier) {
                    if ($country) {
                        if ($charset) {
                            array_push(
                                $localeNames,
                                sprintf('%s_%s.%s@%s', $lang, $country, $charset, $modifier)
                            );
                        }

                        array_push(
                            $localeNames,
                            sprintf('%s_%s@%s', $lang, $country, $modifier)
                        );
                    } elseif ($charset) {
                        array_push(
                            $localeNames,
                            sprintf('%s.%s@%s', $lang, $charset, $modifier)
                        );
                    }

                    array_push(
                        $localeNames,
                        sprintf('%s@%s', $lang, $modifier)
                    );
                }

                if ($country) {
                    if ($charset) {
                        array_push(
                            $localeNames,
                            sprintf('%s_%s.%s', $lang, $country, $charset)
                        );
                    }

                    array_push(
                        $localeNames,
                        sprintf('%s_%s', $lang, $country)
                    );
                } elseif ($charset) {
                    array_push(
                        $localeNames,
                        sprintf('%s.%s', $lang, $charset)
                    );
                }

                array_push($localeNames, $lang);
            }

            // If the locale name doesn't match POSIX style, just include it as-is.
            if (! in_array($locale, $localeNames)) {
                array_push($localeNames, $locale);
            }
        }

        return $localeNames;
    }

    /**
     * Returns Translator object for domain or for default domain.
     *
     * @param string $domain Translation domain
     *
     * @return Translator
     */
    public function getTranslator($domain = '')
    {
        if (empty($domain)) {
            $domain = $this->defaultDomain;
        }

        if (! isset($this->domains[$this->locale])) {
            $this->domains[$this->locale] = [];
        }

        if (! isset($this->domains[$this->locale][$domain])) {
            if (isset($this->paths[$domain])) {
                $base = $this->paths[$domain];
            } else {
                $base = './';
            }

            $localeNames = $this->listLocales($this->locale);

            $filename = '';
            foreach ($localeNames as $locale) {
                $filename = $base . '/' . $locale . '/LC_MESSAGES/' . $domain . '.mo';
                if (file_exists($filename)) {
                    break;
                }
            }

            // We don't care about invalid path, we will get fallback
            // translator here
            $this->domains[$this->locale][$domain] = new Translator($filename);
        }

        return $this->domains[$this->locale][$domain];
    }

    /**
     * Sets the path for a domain.
     *
     * @param string $domain Domain name
     * @param string $path   Path where to find locales
     */
    public function bindtextdomain($domain, $path)
    {
        $this->paths[$domain] = $path;
    }

    /**
     * Sets the default domain.
     *
     * @param string $domain Domain name
     */
    public function textdomain($domain)
    {
        $this->defaultDomain = $domain;
    }

    /**
     * Sets a requested locale.
     *
     * @param string $locale Locale name
     *
     * @return string Set or current locale
     */
    public function setlocale($locale)
    {
        if (! empty($locale)) {
            $this->locale = $locale;
        }

        return $this->locale;
    }

    /**
     * Detects currently configured locale.
     *
     * It checks:
     *
     * - global lang variable
     * - environment for LC_ALL, LC_MESSAGES and LANG
     *
     * @return string with locale name
     */
    public function detectlocale()
    {
        if (isset($GLOBALS['lang'])) {
            return $GLOBALS['lang'];
        }

        $locale = getenv('LC_ALL');
        if ($locale !== false) {
            return $locale;
        }

        $locale = getenv('LC_MESSAGES');
        if ($locale !== false) {
            return $locale;
        }

        $locale = getenv('LANG');
        if ($locale !== false) {
            return $locale;
        }

        return 'en';
    }
}