nextcloud/lib/l10n.php

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<?php
/**
* ownCloud
*
* @author Jakob Sack
* @copyright 2010 Frank Karlitschek karlitschek@kde.org
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library 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 AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
/**
* This class is for i18n and l10n
*/
class OC_L10N{
/**
* cache
*/
protected static $cache = array();
/**
* The best language
*/
protected static $language = '';
/**
* Translations
*/
private $translations = array();
/**
* Localization
*/
private $localizations = array(
'date' => 'd.m.Y',
'datetime' => 'd.m.Y H:i:s',
'time' => 'H:i:s' );
/**
* @brief The constructor
* @param $app the app requesting l10n
* @param $lang default: null Language
* @returns OC_L10N-Object
*
* If language is not set, the constructor tries to find the right
* language.
*/
public function __construct( $app, $lang = null ){
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global $SERVERROOT;
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// Find the right language
if( is_null( $lang )){
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$lang = self::findLanguage( $app );
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}
// Use cache if possible
if(array_key_exists($app.'::'.$lang, self::$cache )){
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$this->translations = self::$cache[$app.'::'.$lang]['t'];
$this->localizations = self::$cache[$app.'::'.$lang]['l'];
}
else{
$i18ndir = self::findI18nDir( $app );
// Localization is in /l10n, Texts are in $i18ndir
// (Just no need to define date/time format etc. twice)
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if( file_exists( $i18ndir.$lang.'.php' )){
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// Include the file, save the data from $CONFIG
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include( $i18ndir.$lang.'.php' );
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if( isset( $TRANSLATIONS ) && is_array( $TRANSLATIONS )){
$this->translations = $TRANSLATIONS;
}
}
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if( file_exists( $SERVERROOT.'/l10n/l10n-'.$lang.'.php' )){
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// Include the file, save the data from $CONFIG
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include( $SERVERROOT.'/l10n/l10n-'.$lang.'.php' );
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if( isset( $LOCALIZATIONS ) && is_array( $LOCALIZATIONS )){
$this->localizations = array_merge( $this->localizations, $LOCALIZATIONS );
}
}
self::$cache[$app.'::'.$lang]['t'] = $this->translations;
self::$cache[$app.'::'.$lang]['l'] = $this->localizations;
}
}
/**
* @brief Translating
* @param $text The text we need a translation for
* @returns Translation or the same text
*
* Returns the translation. If no translation is found, $text will be
* returned.
*/
public function t($text){
if(array_key_exists($text, $this->translations)){
return $this->translations[$text];
}
return $text;
}
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/**
* @brief getTranslations
* @returns Fetch all translations
*
* Returns an associative array with all translations
*/
public function getTranslations(){
return $this->translations;
}
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/**
* @brief Localization
* @param $type Type of localization
* @param $params parameters for this localization
* @returns String or false
*
* Returns the localized data.
*
* Implemented types:
* - date
* - Creates a date
* - l10n-field: date
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* - params: timestamp (int/string)
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* - datetime
* - Creates date and time
* - l10n-field: datetime
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* - params: timestamp (int/string)
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* - time
* - Creates a time
* - l10n-field: time
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* - params: timestamp (int/string)
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*/
public function l($type, $data){
switch($type){
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// If you add something don't forget to add it to $localizations
// at the top of the page
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case 'date':
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if( is_string( $data )) $data = strtotime( $data );
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return date( $this->localizations['date'], $data );
break;
case 'datetime':
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if( is_string( $data )) $data = strtotime( $data );
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return date( $this->localizations['datetime'], $data );
break;
case 'time':
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if( is_string( $data )) $data = strtotime( $data );
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return date( $this->localizations['time'], $data );
break;
default:
return false;
}
}
/**
* @brief Choose a language
* @param $texts Associative Array with possible strings
* @returns String
*
* $text is an array 'de' => 'hallo welt', 'en' => 'hello world', ...
*
* This function is useful to avoid loading thousands of files if only one
* simple string is needed, for example in appinfo.php
*/
public static function selectLanguage( $text ){
$lang = self::findLanguage( array_keys( $text ));
return $text[$lang];
}
/**
* @brief find the best language
* @param $app Array or string, details below
* @returns language
*
* If $app is an array, ownCloud assumes that these are the available
* languages. Otherwise ownCloud tries to find the files in the l10n
* folder.
*
* If nothing works it returns 'en'
*/
public static function findLanguage( $app = null ){
if( !is_array( $app) && self::$language != '' ){
return self::$language;
}
$available = array();
if( is_array( $app )){
$available = $app;
}
else{
$dir = self::findI18nDir( $app );
if( file_exists($dir)){
$dh = opendir($dir);
while(( $file = readdir( $dh )) !== false ){
if( substr( $file, -4, 4 ) == '.php' ){
$i = substr( $file, 0, -4 );
if( $i != '' ){
$available[] = $i;
}
}
}
closedir($dh);
}
}
if( isset($_SESSION['user_id']) && $_SESSION['user_id'] && OC_PREFERENCES::getValue( $_SESSION['user_id'], 'core', 'lang' )){
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$lang = OC_PREFERENCES::getValue( $_SESSION['user_id'], 'core', 'lang' );
self::$language = $lang;
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if( array_search( $lang, $available ) !== false ){
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return $lang;
}
}
if( isset( $_SERVER['HTTP_ACCEPT_LANGUAGE'] )){
$accepted_languages = preg_split( '/,\s*/', $_SERVER['HTTP_ACCEPT_LANGUAGE'] );
foreach( $accepted_languages as $i ){
$temp = explode( ';', $i );
if( array_key_exists( $temp[0], $available )){
return $temp[0];
}
}
}
// Last try: English
return 'en';
}
/**
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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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*/
protected static function findI18nDir( $app ){
global $SERVERROOT;
// find the i18n dir
$i18ndir = $SERVERROOT.'/l10n/';
if( $app != 'core' && $app != '' ){
// Check if the app is in the app folder
if( file_exists( $SERVERROOT.'/apps/'.$app.'/l10n/' )){
$i18ndir = $SERVERROOT.'/apps/'.$app.'/l10n/';
}
else{
$i18ndir = $SERVERROOT.'/'.$app.'/l10n/';
}
}
return $i18ndir;
}
}