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Viewing / Editing File: Lang.php

<?php
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP
 *
 * This content is released under the MIT License (MIT)
 *
 * Copyright (c) 2014 - 2017, British Columbia Institute of Technology
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * @package	CodeIgniter
 * @author	EllisLab Dev Team
 * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
 * @copyright	Copyright (c) 2014 - 2017, British Columbia Institute of Technology (http://bcit.ca/)
 * @license	http://opensource.org/licenses/MIT	MIT License
 * @link	https://codeigniter.com
 * @since	Version 1.0.0
 * @filesource
 */
defined('BASEPATH') OR exit('No direct script access allowed');

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

/**
	 * List of translations
	 *
	 * @var	array
	 */
	public $language =	array();

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

/**
	 * Class constructor
	 *
	 * @return	void
	 */
	public function __construct()
	{
		log_message('info', 'Language Class Initialized');
	}

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

/**
	 * Load a language file
	 *
	 * @param	mixed	$langfile	Language file name
	 * @param	string	$idiom		Language name (english, etc.)
	 * @param	bool	$return		Whether to return the loaded array of translations
	 * @param 	bool	$add_suffix	Whether to add suffix to $langfile
	 * @param 	string	$alt_path	Alternative path to look for the language file
	 *
	 * @return	void|string[]	Array containing translations, if $return is set to TRUE
	 */
	public function load($langfile, $idiom = '', $return = FALSE, $add_suffix = TRUE, $alt_path = '')
	{
		if (is_array($langfile))
		{
			foreach ($langfile as $value)
			{
				$this->load($value, $idiom, $return, $add_suffix, $alt_path);
			}

return;
		}

$langfile = str_replace('.php', '', $langfile);

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

$langfile .= '.php';

if (empty($idiom) OR ! preg_match('/^[a-z_-]+$/i', $idiom))
		{
			$config =& get_config();
			$idiom = empty($config['language']) ? 'english' : $config['language'];
		}

if ($return === FALSE && isset($this->is_loaded[$langfile]) && $this->is_loaded[$langfile] === $idiom)
		{
			return;
		}

// Load the base file, so any others found can override it
		$basepath = BASEPATH.'language/'.$idiom.'/'.$langfile;
		if (($found = file_exists($basepath)) === TRUE)
		{
			include($basepath);
		}

// Do we have an alternative path to look in?
		if ($alt_path !== '')
		{
			$alt_path .= 'language/'.$idiom.'/'.$langfile;
			if (file_exists($alt_path))
			{
				include($alt_path);
				$found = TRUE;
			}
		}
		else
		{
			foreach (get_instance()->load->get_package_paths(TRUE) as $package_path)
			{
				$package_path .= 'language/'.$idiom.'/'.$langfile;
				if ($basepath !== $package_path && file_exists($package_path))
				{
					include($package_path);
					$found = TRUE;
					break;
				}
			}
		}

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

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

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

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

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

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

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

/**
	 * Language line
	 *
	 * Fetches a single line of text from the language array
	 *
	 * @param	string	$line		Language line key
	 * @param	bool	$log_errors	Whether to log an error message if the line is not found
	 * @return	string	Translation
	 */
	public function line($line, $log_errors = TRUE)
	{
		$value = isset($this->language[$line]) ? $this->language[$line] : FALSE;

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

return $value;
	}

}

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