classes/class.ilLanguage.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2001 ILIAS open source, University of Cologne            |
        |                                                                             |
        | 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/


class ilLanguage
{
        var $ilias;
        
        var $text;
        
        var $lang_default;

        var $lang_user;

        var $lang_path;

        var $lang_key;

        var $lang_name;

        var $separator = "#:#";
        
        var $comment_separator = "###";

        var $loaded_modules;

        function ilLanguage($a_lang_key)
        {
                global $ilias,$log;


                $this->ilias =& $ilias;

                if (!isset($log))
                {
                        $this->log = new ilLog(ILIAS_LOG_DIR,ILIAS_LOG_FILE,$ilias->getClientId(),ILIAS_LOG_ENABLED);
                }
                else
                {
                        $this->log =& $log;
                }

                $this->lang_key = $a_lang_key;
                $this->text = array();
                $this->loaded_modules = array();
                $this->lang_path = ILIAS_ABSOLUTE_PATH.substr($this->ilias->ini->readVariable("language","path"),1);

                // if no directory was found fall back to default lang dir
                if (!is_dir($this->lang_path))
                {
                        $this->lang_path = ILIAS_ABSOLUTE_PATH."/lang";
                }

                $this->lang_default = $this->ilias->ini->readVariable("language","default");
                $this->lang_user = $this->ilias->account->prefs["language"];
                
                $langs = $this->getInstalledLanguages();
                
                if (!in_array($this->lang_key,$langs))
                {
                        $this->lang_key = $this->lang_default;
                }

                $this->loadLanguageModule("common");

                return true;
        }

        function getLangKey()
        {
                return $this->lang_key;
        }
        
        function getDefaultLanguage()
        {
                return $this->lang_default;
        }
        
        function txtlng($a_module, $a_topic, $a_language)
        {
                if (strcmp($a_language, $this->lang_key) == 0)
                {
                        return $this->txt($a_topic);
                }
                else
                {
                        $query = sprintf("SELECT value FROM lng_data WHERE lang_key = %s AND module = %s AND identifier = %s",
                                $this->ilias->db->quote($a_language . ""),
                                $this->ilias->db->quote($a_module . ""),
                                $this->ilias->db->quote($a_topic . "")
                        );
                        $r = $this->ilias->db->query($query);
        
                        if  ($row = $r->fetchRow(DB_FETCHMODE_OBJECT))
                        {
                                return $row->value;
                        }
                        else
                        {
                                return "-".$a_topic."-";
                        }
                }
        }

        function txt($a_topic)
        {
                if (empty($a_topic))
                {
                        return "";
                }
                $translation = $this->text[$a_topic];

                if ($translation == "")
                {
                        if (ILIAS_LOG_ENABLED)
                        {
                                $this->log->writeLanguageLog($a_topic,$this->lang_key);
                        }

                        return "-".$a_topic."-";
                }
                else
                {
                        return $translation;
                }
        }
        
        function loadLanguageModule ($a_module)
        {
                if (in_array($a_module, $this->loaded_modules))
                {
                        return;
                }

                $this->loaded_modules[] = $a_module;

                $lang_key = $this->lang_key;

                if (empty($this->lang_key))
                {
                        $lang_key = $this->lang_user;
                }
/*
                $query = "SELECT identifier,value FROM lng_data " .
                                "WHERE lang_key = '" . $lang_key."' " .
                                "AND module = '$a_module'";
                $r = $this->ilias->db->query($query);

                while ($row = $r->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $this->text[$row->identifier] = $row->value;
                }
*/

                $query = "SELECT * FROM lng_modules " .
                                "WHERE lang_key = '".$lang_key."' " .
                                "AND module = '$a_module'";
                $r = $this->ilias->db->query($query);
                $row = $r->fetchRow(DB_FETCHMODE_ASSOC);
                
                $new_text = unserialize($row["lang_array"]);
                if (is_array($new_text))
                {
                        $this->text = array_merge($this->text, $new_text);
                }
        }
        
        
        function getInstalledLanguages()
        {
                $langlist = getObjectList("lng");
                
                foreach ($langlist as $lang)
                {
                        if (substr($lang["desc"], 0, 9) == "installed")
                        {
                                $languages[] = $lang["title"];
                        }
                
                }
                
                return $languages;
        }
        
        function _lookupEntry($a_lang_key, $a_mod, $a_id)
        {
                global $ilDB;
                
                $q = "SELECT * FROM lng_data WHERE".
                        " module = ".$ilDB->quote($a_mod).
                        " AND lang_key =".$ilDB->quote($a_lang_key).
                        " AND identifier =".$ilDB->quote($a_id);
                        
                $set = $ilDB->query($q);
                
                $rec = $set->fetchRow(DB_FETCHMODE_ASSOC);
                
                if ($rec["value"] != "")
                {
                        return $rec["value"];
                }
                
                return "-".$a_id."-";
        }
} // END class.Language
?>