522 lines
14 KiB
PHP
522 lines
14 KiB
PHP
<?php
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/**
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* ownCloud
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*
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* @author Jakob Sack
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* @copyright 2012 Frank Karlitschek frank@owncloud.org
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
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*
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* You should have received a copy of the GNU Affero General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/**
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* This class is for i18n and l10n
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*/
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class OC_L10N{
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/**
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* cached instances
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*/
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protected static $instances=array();
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/**
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* cache
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*/
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protected static $cache = array();
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/**
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* The best language
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*/
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protected static $language = '';
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/**
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* App of this object
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*/
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protected $app;
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/**
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* Language of this object
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*/
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protected $lang;
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/**
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* Translations
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*/
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private $translations = array();
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/**
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* Plural forms (string)
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*/
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private $plural_form_string;
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/**
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* Plural forms (function)
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*/
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private $plural_form_function = null;
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/**
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* Localization
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*/
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private $localizations = array(
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'jsdate' => 'dd.mm.yy',
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'date' => '%d.%m.%Y',
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'datetime' => '%d.%m.%Y %H:%M:%S',
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'time' => '%H:%M:%S',
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'firstday' => 0);
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/**
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* get an L10N instance
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* @return OC_L10N
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*/
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public static function get($app, $lang=null) {
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if(is_null($lang)) {
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if(!isset(self::$instances[$app])) {
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self::$instances[$app]=new OC_L10N($app);
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}
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return self::$instances[$app];
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}else{
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return new OC_L10N($app, $lang);
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}
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}
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/**
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* @brief The constructor
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* @param $app the app requesting l10n
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* @param $lang default: null Language
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* @returns OC_L10N-Object
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*
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* If language is not set, the constructor tries to find the right
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* language.
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*/
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public function __construct($app, $lang = null) {
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$this->app = $app;
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$this->lang = $lang;
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}
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protected function init() {
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if ($this->app === true) {
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return;
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}
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$app = OC_App::cleanAppId($this->app);
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$lang = $this->lang;
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$this->app = true;
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// Find the right language
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if(is_null($lang) || $lang == '') {
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$lang = self::findLanguage($app);
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}
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// Use cache if possible
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if(array_key_exists($app.'::'.$lang, self::$cache)) {
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$this->translations = self::$cache[$app.'::'.$lang]['t'];
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$this->localizations = self::$cache[$app.'::'.$lang]['l'];
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}
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else{
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$i18ndir = self::findI18nDir($app);
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// Localization is in /l10n, Texts are in $i18ndir
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// (Just no need to define date/time format etc. twice)
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if((OC_Helper::issubdirectory($i18ndir.$lang.'.php', OC_App::getAppPath($app).'/l10n/')
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|| OC_Helper::issubdirectory($i18ndir.$lang.'.php', OC::$SERVERROOT.'/core/l10n/')
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|| OC_Helper::issubdirectory($i18ndir.$lang.'.php', OC::$SERVERROOT.'/lib/l10n/')
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|| OC_Helper::issubdirectory($i18ndir.$lang.'.php', OC::$SERVERROOT.'/settings')
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)
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&& file_exists($i18ndir.$lang.'.php')) {
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// Include the file, save the data from $CONFIG
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$transFile = strip_tags($i18ndir).strip_tags($lang).'.php';
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include $transFile;
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if(isset($TRANSLATIONS) && is_array($TRANSLATIONS)) {
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$this->translations = $TRANSLATIONS;
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//merge with translations from theme
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$theme = OC_Config::getValue( "theme" );
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if (!is_null($theme)) {
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$transFile = OC::$SERVERROOT.'/themes/'.$theme.substr($transFile, strlen(OC::$SERVERROOT));
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if (file_exists($transFile)) {
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include $transFile;
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if (isset($TRANSLATIONS) && is_array($TRANSLATIONS)) {
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$this->translations = array_merge($this->translations, $TRANSLATIONS);
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}
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}
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}
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}
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if(isset($PLURAL_FORMS)) {
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$this->plural_form_string = $PLURAL_FORMS;
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}
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}
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if(file_exists(OC::$SERVERROOT.'/core/l10n/l10n-'.$lang.'.php')) {
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// Include the file, save the data from $CONFIG
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include OC::$SERVERROOT.'/core/l10n/l10n-'.$lang.'.php';
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if(isset($LOCALIZATIONS) && is_array($LOCALIZATIONS)) {
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$this->localizations = array_merge($this->localizations, $LOCALIZATIONS);
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}
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}
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self::$cache[$app.'::'.$lang]['t'] = $this->translations;
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self::$cache[$app.'::'.$lang]['l'] = $this->localizations;
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}
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}
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/**
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* @brief Creates a function that The constructor
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* @param $app the app requesting l10n
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* @param $lang default: null Language
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* @returns OC_L10N-Object
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*
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* If language is not set, the constructor tries to find the right
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* language.
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*
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* Parts of the code is copied from Habari:
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* https://github.com/habari/system/blob/master/classes/locale.php
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*/
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protected function createPluralFormFunction($string){
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if(preg_match( '/^\s*nplurals\s*=\s*(\d+)\s*;\s*plural=(.*)$/u', $string, $matches)) {
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// sanitize
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$nplurals = preg_replace( '/[^0-9]/', '', $matches[1] );
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$plural = preg_replace( '#[^n0-9:\(\)\?\|\&=!<>+*/\%-]#', '', $matches[2] );
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$body = str_replace(
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array( 'plural', 'n', '$n$plurals', ),
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array( '$plural', '$n', '$nplurals', ),
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'nplurals='. $nplurals . '; plural=' . $plural
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);
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// add parens
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// important since PHP's ternary evaluates from left to right
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$body .= ';';
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$res = '';
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$p = 0;
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for($i = 0; $i < strlen($body); $i++) {
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$ch = $body[$i];
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switch ( $ch ) {
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case '?':
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$res .= ' ? (';
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$p++;
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break;
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case ':':
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$res .= ') : (';
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break;
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case ';':
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$res .= str_repeat( ')', $p ) . ';';
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$p = 0;
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break;
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default:
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$res .= $ch;
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}
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}
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$body = $res . 'return ($plural>=$nplurals?$nplurals-1:$plural);';
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return create_function('$n', $body);
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}
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else {
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// default: one plural form for all cases but n==1 (english)
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return create_function(
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'$n',
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'$nplurals=2;$plural=($n==1?0:1);return ($plural>=$nplurals?$nplurals-1:$plural);'
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);
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}
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}
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/**
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* @brief Translating
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* @param $text String The text we need a translation for
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* @param array $parameters default:array() Parameters for sprintf
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* @return \OC_L10N_String Translation or the same text
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*
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* Returns the translation. If no translation is found, $text will be
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* returned.
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*/
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public function t($text, $parameters = array()) {
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return new OC_L10N_String($this, $text, $parameters);
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}
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/**
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* @brief Translating
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* @param $text_singular String the string to translate for exactly one object
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* @param $text_plural String the string to translate for n objects
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* @param $count Integer Number of objects
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* @param array $parameters default:array() Parameters for sprintf
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* @return \OC_L10N_String Translation or the same text
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*
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* Returns the translation. If no translation is found, $text will be
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* returned. %n will be replaced with the number of objects.
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*
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* The correct plural is determined by the plural_forms-function
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* provided by the po file.
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*
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*/
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public function n($text_singular, $text_plural, $count, $parameters = array()) {
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$identifier = "_${text_singular}__${text_plural}_";
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if( array_key_exists($this->translations, $identifier)) {
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return new OC_L10N_String( $this, $identifier, $parameters, $count );
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}
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else{
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if($count === 1) {
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return new OC_L10N_String($this, $text_singular, $parameters, $count);
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}
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else{
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return new OC_L10N_String($this, $text_plural, $parameters, $count);
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}
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}
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}
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/**
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* @brief Translating
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* @param $textArray The text array we need a translation for
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* @returns Translation or the same text
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*
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* Returns the translation. If no translation is found, $textArray will be
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* returned.
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*
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*
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* @deprecated deprecated since ownCloud version 5.0
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* This method will probably be removed with ownCloud 6.0
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*
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*
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*/
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public function tA($textArray) {
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OC_Log::write('core', 'DEPRECATED: the method tA is deprecated and will be removed soon.', OC_Log::WARN);
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$result = array();
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foreach($textArray as $key => $text) {
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$result[$key] = (string)$this->t($text);
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}
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return $result;
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}
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/**
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* @brief getTranslations
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* @returns Fetch all translations
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*
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* Returns an associative array with all translations
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*/
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public function getTranslations() {
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$this->init();
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return $this->translations;
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}
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/**
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* @brief getPluralFormString
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* @returns Fetches the gettext "Plural-Forms"-string
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*
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* Returns a string like "nplurals=2; plural=(n != 1);"
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*/
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public function getPluralFormString() {
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$this->init();
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return $this->plural_form_string;
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}
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/**
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* @brief getPluralFormFunction
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* @returns returns the plural form function
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*
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* returned function accepts the argument $n
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*/
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public function getPluralFormString() {
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$this->init();
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if(is_null($this->plural_form_function)) {
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$this->plural_form_function = createPluralFormFunction($this->plural_form_string);
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}
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return $this->plural_form_function;
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}
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/**
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* @brief get localizations
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* @returns Fetch all localizations
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*
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* Returns an associative array with all localizations
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*/
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public function getLocalizations() {
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$this->init();
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return $this->localizations;
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}
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/**
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* @brief Localization
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* @param $type Type of localization
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* @param $params parameters for this localization
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* @returns String or false
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*
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* Returns the localized data.
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*
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* Implemented types:
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* - date
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* - Creates a date
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* - l10n-field: date
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* - params: timestamp (int/string)
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* - datetime
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* - Creates date and time
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* - l10n-field: datetime
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* - params: timestamp (int/string)
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* - time
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* - Creates a time
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* - l10n-field: time
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* - params: timestamp (int/string)
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*/
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public function l($type, $data) {
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$this->init();
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switch($type) {
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// If you add something don't forget to add it to $localizations
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// at the top of the page
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case 'date':
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case 'datetime':
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case 'time':
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if($data instanceof DateTime) return $data->format($this->localizations[$type]);
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elseif(is_string($data)) $data = strtotime($data);
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$locales = array(self::findLanguage());
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if (strlen($locales[0]) == 2) {
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$locales[] = $locales[0].'_'.strtoupper($locales[0]);
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}
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setlocale(LC_TIME, $locales);
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$format = $this->localizations[$type];
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// Check for Windows to find and replace the %e modifier correctly
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if (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN') {
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$format = preg_replace('#(?<!%)((?:%%)*)%e#', '\1%#d', $format);
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}
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return strftime($format, $data);
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break;
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case 'firstday':
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case 'jsdate':
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return $this->localizations[$type];
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default:
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return false;
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}
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}
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/**
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* @brief Choose a language
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* @param $texts Associative Array with possible strings
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* @returns String
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*
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* $text is an array 'de' => 'hallo welt', 'en' => 'hello world', ...
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*
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* This function is useful to avoid loading thousands of files if only one
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* simple string is needed, for example in appinfo.php
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*/
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public static function selectLanguage($text) {
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$lang = self::findLanguage(array_keys($text));
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return $text[$lang];
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}
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/**
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* @brief find the best language
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* @param $app Array or string, details below
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* @returns language
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*
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* If $app is an array, ownCloud assumes that these are the available
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* languages. Otherwise ownCloud tries to find the files in the l10n
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* folder.
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*
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* If nothing works it returns 'en'
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*/
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public static function findLanguage($app = null) {
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if(!is_array($app) && self::$language != '') {
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return self::$language;
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}
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if(OC_User::getUser() && OC_Preferences::getValue(OC_User::getUser(), 'core', 'lang')) {
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$lang = OC_Preferences::getValue(OC_User::getUser(), 'core', 'lang');
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self::$language = $lang;
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if(is_array($app)) {
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$available = $app;
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$lang_exists = array_search($lang, $available) !== false;
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}
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else {
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$lang_exists = self::languageExists($app, $lang);
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}
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if($lang_exists) {
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return $lang;
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}
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}
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if(isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
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$accepted_languages = preg_split('/,\s*/', strtolower($_SERVER['HTTP_ACCEPT_LANGUAGE']));
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if(is_array($app)) {
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$available = $app;
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}
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else{
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$available = self::findAvailableLanguages($app);
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}
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foreach($accepted_languages as $i) {
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$temp = explode(';', $i);
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$temp[0] = str_replace('-', '_', $temp[0]);
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if( ($key = array_search($temp[0], $available)) !== false) {
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if (is_null($app)) {
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self::$language = $available[$key];
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}
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return $available[$key];
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}
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foreach($available as $l) {
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if ( $temp[0] == substr($l, 0, 2) ) {
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if (is_null($app)) {
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self::$language = $l;
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}
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return $l;
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}
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}
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}
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}
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// Last try: English
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return 'en';
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}
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/**
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* @brief find the l10n directory
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* @param $app App that needs to be translated
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* @returns directory
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*/
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protected static function findI18nDir($app) {
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// find the i18n dir
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$i18ndir = OC::$SERVERROOT.'/core/l10n/';
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if($app != '') {
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// Check if the app is in the app folder
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if(file_exists(OC_App::getAppPath($app).'/l10n/')) {
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$i18ndir = OC_App::getAppPath($app).'/l10n/';
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}
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else{
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$i18ndir = OC::$SERVERROOT.'/'.$app.'/l10n/';
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}
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}
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return $i18ndir;
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}
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/**
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* @brief find all available languages for an app
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* @param $app App that needs to be translated
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* @returns array an array of available languages
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*/
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public static function findAvailableLanguages($app=null) {
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$available=array('en');//english is always available
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$dir = self::findI18nDir($app);
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if(is_dir($dir)) {
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$files=scandir($dir);
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foreach($files as $file) {
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if(substr($file, -4, 4) === '.php' && substr($file, 0, 4) !== 'l10n') {
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$i = substr($file, 0, -4);
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$available[] = $i;
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}
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}
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}
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return $available;
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}
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public static function languageExists($app, $lang) {
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if ($lang == 'en') {//english is always available
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return true;
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}
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$dir = self::findI18nDir($app);
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if(is_dir($dir)) {
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return file_exists($dir.'/'.$lang.'.php');
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}
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return false;
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}
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}
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