source: sourcecode/system/core/Lang.php @ 1

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 5.1.6 or newer
 *
 * @package             CodeIgniter
 * @author              ExpressionEngine Dev Team
 * @copyright   Copyright (c) 2008 - 2011, EllisLab, Inc.
 * @license             http://codeigniter.com/user_guide/license.html
 * @link                http://codeigniter.com
 * @since               Version 1.0
 * @filesource
 */

// ------------------------------------------------------------------------

/**
 * Language Class
 *
 * @package             CodeIgniter
 * @subpackage  Libraries
 * @category    Language
 * @author              ExpressionEngine Dev Team
 * @link                http://codeigniter.com/user_guide/libraries/language.html
 */
class CI_Lang {

        /**
         * List of translations
         *
         * @var array
         */
        var $language   = array();
        /**
         * List of loaded language files
         *
         * @var array
         */
        var $is_loaded  = array();

        /**
         * Constructor
         *
         * @access      public
         */
        function __construct()
        {
                log_message('debug', "Language Class Initialized");
        }

        // --------------------------------------------------------------------

        /**
         * Load a language file
         *
         * @access      public
         * @param       mixed   the name of the language file to be loaded. Can be an array
         * @param       string  the language (english, etc.)
         * @param       bool    return loaded array of translations
         * @param       bool    add suffix to $langfile
         * @param       string  alternative path to look for language file
         * @return      mixed
         */
        function load($langfile = '', $idiom = '', $return = FALSE, $add_suffix = TRUE, $alt_path = '')
        {
                $langfile = str_replace('.php', '', $langfile);

                if ($add_suffix == TRUE)
                {
                        $langfile = str_replace('_lang.', '', $langfile).'_lang';
                }

                $langfile .= '.php';

                if (in_array($langfile, $this->is_loaded, TRUE))
                {
                        return;
                }

                $config =& get_config();

                if ($idiom == '')
                {
                        $deft_lang = ( ! isset($config['language'])) ? 'english' : $config['language'];
                        $idiom = ($deft_lang == '') ? 'english' : $deft_lang;
                }

                // Determine where the language file is and load it
                if ($alt_path != '' && file_exists($alt_path.'language/'.$idiom.'/'.$langfile))
                {
                        include($alt_path.'language/'.$idiom.'/'.$langfile);
                }
                else
                {
                        $found = FALSE;

                        foreach (get_instance()->load->get_package_paths(TRUE) as $package_path)
                        {
                                if (file_exists($package_path.'language/'.$idiom.'/'.$langfile))
                                {
                                        include($package_path.'language/'.$idiom.'/'.$langfile);
                                        $found = TRUE;
                                        break;
                                }
                        }

                        if ($found !== TRUE)
                        {
                                show_error('Unable to load the requested language file: language/'.$idiom.'/'.$langfile);
                        }
                }


                if ( ! isset($lang))
                {
                        log_message('error', 'Language file contains no data: language/'.$idiom.'/'.$langfile);
                        return;
                }

                if ($return == TRUE)
                {
                        return $lang;
                }

                $this->is_loaded[] = $langfile;
                $this->language = array_merge($this->language, $lang);
                unset($lang);

                log_message('debug', 'Language file loaded: language/'.$idiom.'/'.$langfile);
                return TRUE;
        }

        // --------------------------------------------------------------------

        /**
         * Fetch a single line of text from the language array
         *
         * @access      public
         * @param       string  $line   the language line
         * @return      string
         */
        function line($line = '')
        {
                $value = ($line == '' OR ! isset($this->language[$line])) ? FALSE : $this->language[$line];

                // Because killer robots like unicorns!
                if ($value === FALSE)
                {
                        log_message('error', 'Could not find the language line "'.$line.'"');
                }

                return $value;
        }

}
// END Language Class

/* End of file Lang.php */
/* Location: ./system/core/Lang.php */