locale.php

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<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to [e-mail] so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Locale
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @version    $Id: Locale.php 8927 2008-03-20 19:33:47Z thomas $
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */


/**
 * @category   Zend
 * @package    Zend_Locale
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Locale {

    // Class wide Locale Constants
    private static $_localeData = array(
        'root'  => true, 'aa_DJ' => true, 'aa_ER' => true, 'aa_ET' => true, 'aa'    => true, 'af_NA' => true, 'af_ZA' => true, 'af'    => true, 'ak_GH' => true, 'ak'    => true,
        'am_ET' => true, 'am'    => true, 'ar_AE' => true, 'ar_BH' => true, 'ar_DZ' => true, 'ar_EG' => true, 'ar_IQ' => true, 'ar_JO' => true, 'ar_KW' => true, 'ar_LB' => true,
        'ar_LY' => true, 'ar_MA' => true, 'ar_OM' => true, 'ar_QA' => true, 'ar_SA' => true, 'ar_SD' => true, 'ar_SY' => true, 'ar_TN' => true, 'ar_YE' => true, 'ar'    => true,
        'as_IN' => true, 'as'    => true, 'az_AZ' => true, 'az'    => true, 'be_BY' => true, 'be'    => true, 'bg_BG' => true, 'bg'    => true, 'bn_BD' => true, 'bn_IN' => true,
        'bn'    => true, 'bo_CN' => true, 'bo_IN' => true, 'bo'    => true, 'bs_BA' => true, 'bs'    => true, 'byn_ER'=> true, 'byn'   => true, 'ca_ES' => true, 'ca'    => true,
        'cch_NG'=> true, 'cch'   => true, 'cop_EG'=> true, 'cop_US'=> true, 'cop'   => true, 'cs_CZ' => true, 'cs'    => true, 'cy_GB' => true, 'cy'    => true, 'da_DK' => true,
        'da'    => true, 'de_AT' => true, 'de_BE' => true, 'de_CH' => true, 'de_DE' => true, 'de_LI' => true, 'de_LU' => true, 'de'    => true, 'dv_MV' => true, 'dv'    => true,
        'dz_BT' => true, 'dz'    => true, 'ee_GH' => true, 'ee_TG' => true, 'ee'    => true, 'el_CY' => true, 'el_GR' => true, 'el'    => true, 'en_AS' => true, 'en_AU' => true,
        'en_BE' => true, 'en_BW' => true, 'en_BZ' => true, 'en_CA' => true, 'en_GB' => true, 'en_GU' => true, 'en_HK' => true, 'en_IE' => true, 'en_IN' => true, 'en_JM' => true,
        'en_MH' => true, 'en_MP' => true, 'en_MT' => true, 'en_NZ' => true, 'en_PH' => true, 'en_PK' => true, 'en_SG' => true, 'en_TT' => true, 'en_UM' => true, 'en_US' => true,
        'en_VI' => true, 'en_ZA' => true, 'en_ZW' => true, 'en'    => true, 'eo'    => true, 'es_AR' => true, 'es_BO' => true, 'es_CL' => true, 'es_CO' => true, 'es_CR' => true,
        'es_DO' => true, 'es_EC' => true, 'es_ES' => true, 'es_GT' => true, 'es_HN' => true, 'es_MX' => true, 'es_NI' => true, 'es_PA' => true, 'es_PE' => true, 'es_PR' => true,
        'es_PY' => true, 'es_SV' => true, 'es_US' => true, 'es_UY' => true, 'es_VE' => true, 'es'    => true, 'et_EE' => true, 'et'    => true, 'eu_ES' => true, 'eu'    => true,
        'fa_AF' => true, 'fa_IR' => true, 'fa'    => true, 'fi_FI' => true, 'fi'    => true, 'fil'   => true, 'fo_FO' => true, 'fo'    => true, 'fr_BE' => true, 'fr_CA' => true,
        'fr_CH' => true, 'fr_FR' => true, 'fr_LU' => true, 'fr_MC' => true, 'fr'    => true, 'fur_IT'=> true, 'fur'   => true, 'ga_IE' => true, 'ga'    => true, 'gaa_GH'=> true,
        'gaa'   => true, 'gez_ER'=> true, 'gez_ET'=> true, 'gez'   => true, 'gl_ES' => true, 'gl'    => true, 'gu_IN' => true, 'gu'    => true, 'gv_GB' => true, 'gv'    => true,
        'ha_GH' => true, 'ha_NE' => true, 'ha_NG' => true, 'ha'    => true, 'haw_US'=> true, 'haw'   => true, 'he_IL' => true, 'he'    => true, 'hi_IN' => true, 'hi'    => true,
        'hr_HR' => true, 'hr'    => true, 'hu_HU' => true, 'hu'    => true, 'hy_AM' => true, 'hy'    => true, 'ia'    => true, 'id_ID' => true, 'id'    => true, 'ig_NG' => true,
        'ig'    => true, 'ii_CN' => true, 'ii'    => true, 'is_IS' => true, 'is'    => true, 'it_CH' => true, 'it_IT' => true, 'it'    => true, 'iu'    => true, 'ja_JP' => true,
        'ja'    => true, 'ka_GE' => true, 'ka'    => true, 'kaj_NG'=> true, 'kaj'   => true, 'kam_KE'=> true, 'kam'   => true, 'kcg_NG'=> true, 'kcg'   => true, 'kfo_NG'=> true,
        'kfo'   => true, 'kk_KZ' => true, 'kk'    => true, 'kl_GL' => true, 'kl'    => true, 'km_KH' => true, 'km'    => true, 'kn_IN' => true, 'kn'    => true, 'ko_KR' => true,
        'ko'    => true, 'kok_IN'=> true, 'kok'   => true, 'kpe_GN'=> true, 'kpe_LR'=> true, 'kpe'   => true, 'ku_IQ' => true, 'ku_IR' => true, 'ku_SY' => true, 'ku_TR' => true,
        'ku'    => true, 'kw_GB' => true, 'kw'    => true, 'ky_KG' => true, 'ky'    => true, 'ln_CD' => true, 'ln_CG' => true, 'ln'    => true, 'lo_LA' => true, 'lo'    => true,
        'lt_LT' => true, 'lt'    => true, 'lv_LV' => true, 'lv'    => true, 'mk_MK' => true, 'mk'    => true, 'ml_IN' => true, 'ml'    => true, 'mn_MN' => true, 'mn'    => true,
        'mr_IN' => true, 'mr'    => true, 'ms_BN' => true, 'ms_MY' => true, 'ms'    => true, 'mt_MT' => true, 'mt'    => true, 'my_MM' => true, 'my'    => true, 'nb_NO' => true,
        'nb'    => true, 'ne_NP' => true, 'ne'    => true, 'nl_BE' => true, 'nl_NL' => true, 'nl'    => true, 'nn_NO' => true, 'nn'    => true, 'nr_ZA' => true, 'nr'    => true,
        'nso_ZA'=> true, 'nso'   => true, 'ny_MW' => true, 'ny'    => true, 'om_ET' => true, 'om_KE' => true, 'om'    => true, 'or_IN' => true, 'or'    => true, 'pa_IN' => true,
        'pa_PK' => true, 'pa'    => true, 'pl_PL' => true, 'pl'    => true, 'ps_AF' => true, 'ps'    => true, 'pt_BR' => true, 'pt_PT' => true, 'pt'    => true, 'ro_RO' => true,
        'ro'    => true, 'ru_RU' => true, 'ru_UA' => true, 'ru'    => true, 'rw_RW' => true, 'rw'    => true, 'sa_IN' => true, 'sa'    => true, 'se_FI' => true, 'se_NO' => true,
        'se'    => true, 'sh_BA' => true, 'sh_CS' => true, 'sh_YU' => true, 'sh'    => true, 'sid_ET'=> true, 'sid'   => true, 'sk_SK' => true, 'sk'    => true, 'sl_SI' => true,
        'sl'    => true, 'so_DJ' => true, 'so_ET' => true, 'so_KE' => true, 'so_SO' => true, 'so'    => true, 'sq_AL' => true, 'sq'    => true, 'sr_BA' => true, 'sr_CS' => true,
        'sr_ME' => true, 'sr_RS' => true, 'sr_YU' => true, 'sr'    => true, 'ss_ZA' => true, 'ss'    => true, 'ssy'   => true, 'st_ZA' => true, 'st'    => true, 'sv_FI' => true,
        'sv_SE' => true, 'sv'    => true, 'sw_KE' => true, 'sw_TZ' => true, 'sw'    => true, 'syr_SY'=> true, 'syr'   => true, 'ta_IN' => true, 'ta'    => true, 'te_IN' => true,
        'te'    => true, 'tg_TJ' => true, 'tg'    => true, 'th_TH' => true, 'th'    => true, 'ti_ER' => true, 'ti_ET' => true, 'ti'    => true, 'tig_ER'=> true, 'tig'   => true,
        'tn_ZA' => true, 'tn'    => true, 'to_TO' => true, 'to'    => true, 'tr_TR' => true, 'tr'    => true, 'ts_ZA' => true, 'ts'    => true, 'tt_RU' => true, 'tt'    => true,
        'ug'    => true, 'uk_UA' => true, 'uk'    => true, 'und_ZZ'=> true, 'und'   => true, 'ur_IN' => true, 'ur_PK' => true, 'ur'    => true, 'uz_AF' => true, 'uz_UZ' => true,
        'uz'    => true, 've_ZA' => true, 've'    => true, 'vi_VN' => true, 'vi'    => true, 'wal_ET'=> true, 'wal'   => true, 'wo_SN' => true, 'wo'    => true, 'xh_ZA' => true,
        'xh'    => true, 'yo_NG' => true, 'yo'    => true, 'zh_CN' => true, 'zh_HK' => true, 'zh_MO' => true, 'zh_SG' => true, 'zh_TW' => true, 'zh'    => true, 'zu_ZA' => true,
        'zu'    => true, 
        'auto'  => false, 'browser' => false, 'environment' => false
    );


    /**
     * Autosearch constants
     */
    const BROWSER     = 1;
    const ENVIRONMENT = 2;
    const FRAMEWORK   = 3;


    /**
     * Actual set locale
     */
    private $_Locale;


    /**
     * Actual set Codeset
     */
    private $_Codeset;

    /**
     * Automatic detected locale
     */
    private static $_auto;
    private static $_browser;
    private static $_environment;

    private static $_Default = "en";

    /**
     * Generates a locale object
     * If no locale is given a automatic search is done
     * Then the most probable locale will be automatically set
     * Search order is
     *  1. Given Locale
     *  2. HTTP Client
     *  3. Server Environment
     *  4. Framework Standard
     *
     * @param  string  $locale  OPTIONAL locale for parsing input
     * @throws Zend_Locale_Exception
     */
    public function __construct($locale = null)
    {
        if (empty(self::$_auto)) {
            self::$_auto        = $this->getDefault(null, false);
            self::$_browser     = $this->getDefault(self::BROWSER, false);
            self::$_environment = $this->getDefault(self::ENVIRONMENT, false);
            if (empty($locale) and empty(self::$_auto) and empty(self::$_Default)) {
                require_once 'Zend/Locale/Exception.php';
                throw new Zend_Locale_Exception('Autodetection of Locale has been failed!');
            }
        }

        if ($locale instanceof Zend_Locale) {
            $locale = $locale->toString();
        }
        $this->setLocale($locale);
    }


    /**
     * Serialization Interface
     *
     * @return string
     */
    public function serialize()
    {
        return serialize($this);
    }


    /**
     * Returns a string representation of the object
     *
     * @return string
     */
    public function toString()
    {
        return (string) $this->_Locale;
    }


    /**
     * Returns a string representation of the object
     * Alias for toString
     *
     * @return string
     */
    public function __toString()
    {
        return $this->toString();
    }


    /**
     * Search the locale automatically and return all used locales
     * ordered by quality
     *
     * Standard Searchorder is
     * - getBrowser
     * - getEnvironment
     * - getFramework
     *
     * @param $searchorder  - OPTIONAL searchorder
     * @param $fastsearch   - OPTIONAL returnes the first found locale array when true
     *                        otherwise all found default locales will be returned
     * @return  locale - returns an array of all the mosta locale string
     */
    public function getDefault($searchorder = null, $fastsearch = null)
    {
        $languages = array();
        if ($searchorder == self::ENVIRONMENT) {

            $languages = $this->getEnvironment();
            if (empty($languages) or !$fastsearch) {
                $languages = array_merge($languages, $this->getFramework());
            }
            if (empty($languages) or !$fastsearch) {
                $languages = array_merge($languages, $this->getBrowser());
            }

        } else if ($searchorder == self::FRAMEWORK) {

            $languages = $this->getFramework();
            if (empty($languages) or !$fastsearch) {
                $languages = array_merge($languages, $this->getEnvironment());
            }
            if (empty($languages) or !$fastsearch) {
                $languages = array_merge($languages, $this->getBrowser());
            }

        } else {

            $languages = $this->getBrowser();
            if (empty($languages) or !$fastsearch) {
                $languages = array_merge($languages, $this->getEnvironment());
            }
            if (empty($languages) or !$fastsearch) {
                $languages = array_merge($languages, $this->getFramework());
            }

        }

        if (!array_key_exists(self::$_Default, $languages)) {
            $languages[self::$_Default] = 0.1;
        }
        return $languages;
    }


    /**
     * Sets a new default locale
     *
     * @param String $locale
     * @return boolean
     * @throws Zend_Locale_Exception
     */
    public static function setDefault($locale)
    {
        if (($locale == "auto") or ($locale == "root") or 
            ($locale == "environment") or ($locale == "browser")) {
            require_once 'Zend/Locale/Exception.php';
            throw new Zend_Locale_Exception('Only full qualified locales can be used as default!');
        }
        if (array_key_exists($locale, self::$_localeData)) {
            self::$_Default = $locale;
            return true;
        } else {
            $locale = explode('_', $locale);
            if (array_key_exists($locale[0], self::$_localeData)) {
                self::$_Default = $locale[0];
                return true;
            }
        }
        require_once 'Zend/Locale/Exception.php';
        throw new Zend_Locale_Exception("Unknown locale '$locale' can not be set as default!");
    }


    /**
     * Expects the Systems standard locale
     *
     * For Windows:
     * f.e.: LC_COLLATE=C;LC_CTYPE=German_Austria.1252;LC_MONETARY=C
     * would be recognised as de_AT
     *
     * @return array
     */
    public function getEnvironment()
    {
        require_once 'Zend/Locale/Data/Translation.php';

        $language = setlocale(LC_ALL, 0);
        $languages = explode(';', $language);

        $languagearray = array();

        foreach ($languages as $locale) {

            if (strpos($locale, '=') !== false) {
                $language = substr($locale, strpos($locale, '='));
                $language = substr($language, 1);
            }

            if ($language != 'C') {
                if (strpos($language, '.') !== false) {
                    $language = substr($language, 0, strpos($language, '.') - 1);
                } else if (strpos($language, '@') !== false) {
                    $language = substr($language, 0, strpos($language, '@') - 1);
                }
                $splitted = explode('_', $language);
                if (array_key_exists((string) $language, self::$_localeData)) {
                    $languagearray[$language] = 1;
                    if (strlen($language) > 4) {
                        $languagearray[substr($language, 0, 2)] = 1;
                    }
                    continue;
                }

                if (!empty(Zend_Locale_Data_Translation::$localeTranslation[$splitted[0]])) {
                    if (!empty(Zend_Locale_Data_Translation::$localeTranslation[$splitted[1]])) {
                        $languagearray[Zend_Locale_Data_Translation::$localeTranslation[$splitted[0]] . '_'
                      . Zend_Locale_Data_Translation::$localeTranslation[$splitted[1]]] = 1;
                    }
                    $languagearray[Zend_Locale_Data_Translation::$localeTranslation[$splitted[0]]] = 1;
                }
            }
        }
        return $languagearray;
    }

    /**
     * Return an array of all accepted languages of the client
     * Expects RFC compilant Header !!
     *
     * The notation can be :
     * de,en-UK-US;q=0.5,fr-FR;q=0.2
     *
     * @return array - list of accepted languages including quality
     */
    public function getBrowser()
    {
        $httplanguages = getenv("HTTP_ACCEPT_LANGUAGE");

        $languages = array();
        if (empty($httplanguages)) {
            return $languages;
        }

        $accepted = preg_split('/,\s*/', $httplanguages);

        foreach ($accepted as $accept) {
            $result = preg_match('/^([a-z]{1,8}(?:[-_][a-z]{1,8})*)(?:;\s*q=(0(?:\.[0-9]{1,3})?|1(?:\.0{1,3})?))?$/i',
                                 $accept, $match);

            if (!$result) {
                continue;
            }

            if (isset($match[2])) {
                $quality = (float) $match[2];
            } else {
                $quality = 1.0;
            }

            $countrys = explode('-', $match[1]);
            $region = array_shift($countrys);

            $country2 = explode('_', $region);
            $region = array_shift($country2);

            foreach($countrys as $country) {
                $languages[$region . '_' . strtoupper($country)] = $quality;
            }
            foreach($country2 as $country) {
                $languages[$region . '_' . strtoupper($country)] = $quality;
            }
            if (!isset($languages[$region]) || ($languages[$region] < $quality)) {
                $languages[$region] = $quality;
            }
        }
        return $languages;
    }


    /**
     * Returns the locale which the framework is set to
     * 
     * @return array
     */
    public function getFramework()
    {
        $languages = array();
        return $languages;
    }


    /**
     * Sets a new locale
     *
     * @param mixed  $locale  OPTIONAL new locale to set
     */
    public function setLocale($locale = null)
    {
        if (($locale == self::BROWSER) or ($locale == self::ENVIRONMENT) or ($locale === null)) {
            $locale = $this->getDefault($locale, true);
        }

        if (($locale == 'auto') or ($locale === null)) {
            $locale = self::$_auto;
        }
        if ($locale == 'browser') {
            $locale = self::$_browser;
        }
        if ($locale == 'environment') {
            $locale = self::$_environment;
        }
        if (is_array($locale)) {
            $locale = key($locale);
        }
        if (!array_key_exists((string) $locale, self::$_localeData)) {
            $region = substr($locale, 0, 3);
            if (isset($region[2])) {
                if (($region[2] == '_') or ($region[2] == '-')) {
                    $region = substr($region, 0, 2);
                }
            }
            if (array_key_exists((string) $region, self::$_localeData)) {
                $this->_Locale = $region;
            } else {
                $this->_Locale = 'root';
            }

        } else {
            $this->_Locale = $locale;
        }
    }


    /**
     * Returns the language part of the locale
     *
     * @return language
     */