/system/core/Loader.php

.htaccess
LICENSE
PHPMailer
    .gitignore
    .scrutinizer.yml
    .travis.yml
    LICENSE
    PHPMailerAutoload.php
    README.md
    VERSION
    changelog.md
    class.phpmailer.php
    class.pop3.php
    class.smtp.php
    composer.json
    docs
        Callback_function_notes.txt
        DomainKeys_notes.txt
        Note_for_SMTP_debugging.txt
        extending.html
        faq.html
        generatedocs.sh
        pop3_article.txt
    examples
        code_generator.phps
        contents.html
        contentsutf8.html
        exceptions.phps
        gmail.phps
        images
            phpmailer.png
            phpmailer_mini.png
        index.html
        mail.phps
        mailing_list.phps
        pop_before_smtp.phps
        scripts
            XRegExp.js
            shAutoloader.js
            shBrushPhp.js
            shCore.js
            shLegacy.js
        send_file_upload.phps
        sendmail.phps
        smtp.phps
        smtp_check.phps
        smtp_no_auth.phps
        ssl_options.phps
        styles
            shCore.css
            shCoreDefault.css
            shCoreDjango.css
            shCoreEclipse.css
            shCoreEmacs.css
            shCoreFadeToGrey.css
            shCoreMDUltra.css
            shCoreMidnight.css
            shCoreRDark.css
            shThemeAppleScript.css
            shThemeDefault.css
            shThemeDjango.css
            shThemeEclipse.css
            shThemeEmacs.css
            shThemeFadeToGrey.css
            shThemeMDUltra.css
            shThemeMidnight.css
            shThemeRDark.css
            shThemeVisualStudio.css
            wrapping.png
    extras
        EasyPeasyICS.php
        README.md
        htmlfilter.php
        ntlm_sasl_client.php
    language
        phpmailer.lang-am.php
        phpmailer.lang-ar.php
        phpmailer.lang-az.php
        phpmailer.lang-be.php
        phpmailer.lang-bg.php
        phpmailer.lang-br.php
        phpmailer.lang-ca.php
        phpmailer.lang-ch.php
        phpmailer.lang-cz.php
        phpmailer.lang-de.php
        phpmailer.lang-dk.php
        phpmailer.lang-el.php
        phpmailer.lang-eo.php
        phpmailer.lang-es.php
        phpmailer.lang-et.php
        phpmailer.lang-fa.php
        phpmailer.lang-fi.php
        phpmailer.lang-fo.php
        phpmailer.lang-fr.php
        phpmailer.lang-gl.php
        phpmailer.lang-he.php
        phpmailer.lang-hr.php
        phpmailer.lang-hu.php
        phpmailer.lang-id.php
        phpmailer.lang-it.php
        phpmailer.lang-ja.php
        phpmailer.lang-ka.php
        phpmailer.lang-ko.php
        phpmailer.lang-lt.php
        phpmailer.lang-lv.php
        phpmailer.lang-ms.php
        phpmailer.lang-nl.php
        phpmailer.lang-no.php
        phpmailer.lang-pl.php
        phpmailer.lang-pt.php
        phpmailer.lang-ro.php
        phpmailer.lang-ru.php
        phpmailer.lang-se.php
        phpmailer.lang-sk.php
        phpmailer.lang-sl.php
        phpmailer.lang-sr.php
        phpmailer.lang-tr.php
        phpmailer.lang-uk.php
        phpmailer.lang-vi.php
        phpmailer.lang-zh.php
        phpmailer.lang-zh_cn.php
    test
        bootstrap.php
        fakepopserver.sh
        fakesendmail.sh
        phpmailerLangTest.php
        phpmailerTest.php
        runfakepopserver.sh
        test_callback.php
        testbootstrap-dist.php
    travis.phpunit.xml.dist
application
    .htaccess
    cache
        .htaccess
        index.html
    config
        autoload.php
        config.php
        constants.php
        database.php
        doctypes.php
        foreign_chars.php
        hooks.php
        index.html
        memcached.php
        migration.php
        mimes.php
        profiler.php
        routes.php
        smileys.php
        user_agents.php
    controllers
        Check.php
        Systemid.php
        Welcome.php
        index.html
    core
        index.html
    errors
        error_404.php
        error_db.php
        error_general.php
        error_php.php
        index.html
    helpers
        index.html
    hooks
        index.html
    index.html
    language
        english
            index.html
            system_lang.php
        index.html
        polish
            .gitattributes
            README.md
            calendar_lang.php
            date_lang.php
            db_lang.php
            email_lang.php
            form_validation_lang.php
            ftp_lang.php
            imglib_lang.php
            index.html
            migration_lang.php
            number_lang.php
            pagination_lang.php
            profiler_lang.php
            system_lang.php
            unit_test_lang.php
            upload_lang.php
    libraries
        index.html
    logs
        index.html
    models
        System_model.php
        index.html
    third_party
        index.html
    views
        components.php
        errors
            cli
                error_404.php
                error_db.php
                error_exception.php
                error_general.php
                error_php.php
                index.html
            html
                error_404.php
                error_db.php
                error_exception.php
                error_general.php
                error_php.php
                index.html
            index.html
        foot.php
        head.php
        index.html
        link
            archive.php
            archivereport.php
            check.php
            importlink.php
        login.php
        project
            add.php
            addlink.php
            details.php
            edit.php
            editlink.php
            show.php
        user
            changepassword.php
            editemail.php
            getpassword.php
            postpassword.php
            settings.php
        welcome_message.php
arial.ttf
captcha
    sys.txt
css
    bootstrap-theme.css
    bootstrap-theme.css.map
    bootstrap-theme.min.css
    bootstrap-theme.min.css.map
    bootstrap.css
    bootstrap.css.map
    bootstrap.min.css
    bootstrap.min.css.map
favicon.ico
fonts
    glyphicons-halflings-regular.eot
    glyphicons-halflings-regular.svg
    glyphicons-halflings-regular.ttf
    glyphicons-halflings-regular.woff
    glyphicons-halflings-regular.woff2
hrefsystem.png
index.php
install.php
jquery-latest.min.js
js
    bootstrap.js
    bootstrap.min.js
    npm.js
library
    ajax-loader.gif
    crop
        Canvas.php
        Coordinate.php
        Exception.php
        Font
            GDF.php
            PS.php
            TTF.php
        Image.php
        Mapper
            BMP.php
            GD.php
            GD2.php
            GIF.php
            JPEG.php
            PNG.php
            TGA.php
        MapperFactory.php
        Operation
            AddNoise.php
            ApplyConvolution.php
            ApplyFilter.php
            ApplyMask.php
            AsGrayscale.php
            AsNegative.php
            AutoCrop.php
            CopyChannelsPalette.php
            CopyChannelsTrueColor.php
            CorrectGamma.php
            Crop.php
            Flip.php
            GetMask.php
            Merge.php
            Mirror.php
            Resize.php
            ResizeCanvas.php
            Rotate.php
            RoundCorners.php
            Unsharp.php
        OperationFactory.php
        PaletteImage.php
        README
        TrueColorImage.php
        VERSION
        WideImage.php
        gpl.txt
        lgpl.txt
        vendor
            de77
                BMP.php
                TGA.php
    index.html
    jquery-autocomplete
        changelog.txt
        demo
            bg.gif
            emails.php
            emails.phps
            images
                Amsterdam Van-Gogh Museum.jpg
                Amsterdam.jpg
                Antwerpen Rubenshaus.jpg
                Antwerpen.jpg
                Appenzell.jpg
                Arnhem Historisches Museum.jpg
                Bled.jpg
                Bled_Die Burg von Bled.jpg
                Bogojina_Die Pfarrkirche.jpg
                BolognaBasilicadiSanPetronio.jpg
                BolognaFontanadelNettuno.jpg
                BolognaPiazzaMaggiore.jpg
                Bolsward Martinikerk.jpg
                Bolsward Stadhuis.jpg
                Bolsward.jpg
                BordeauxND.jpg
                BordeauxPlaceB.jpg
                BotanischerGartenZuerich.jpg
                Bouillon.jpg
                Gent Hotel de Ville2.jpg
                Gent.jpg
                GenuaStrand.jpg
                GenuabeiNacht.jpg
                Giessbachfaelle Brienz.jpg
                Giethoorn.jpg
                Gnesen.jpg
                Gornij Grad_KATHEDRALE.jpg
                Gossensass.jpg
                Grad_Burg Grad2.jpg
                GrandDixence.jpg
                GrenoblePanorama.jpg
                Groningen.jpg
                GrottenvonReclere.jpg
                Guebwiller.jpg
                Kamnik_Die Franziskaner Bibliothek.jpg
                Karlsbad Muehlbrunnkolonnade.jpg
                Kazimierz.jpg
                KirchbergAltesRathaus1.jpg
                KlagenfurtDom.jpg
                KleineMeerjungfreu.jpg
                LazienkiparkWarschau.jpg
                LeHavreHafen.jpg
                LeMans.jpg
                Lednice.jpg
                Leeuwarden Fries Museum.jpg
                Leeuwarden.jpg
                Lelystad.jpg
                Lemmer.jpg
                Leper Halles aux draps.jpg
                Leuven Museum fuer Kirchenkunst.jpg
                Leuven.jpg
                Luxemburg.jpg
                LuzernAltstadt.jpg
                LuzernPicassoMuseum.jpg
                Lyon.jpg
                Maastricht Onze Lieve Vrou...jpg
                Maastricht St Servaasbasiliek.jpg
                Maastricht Walmuur.jpg
                Maastricht.jpg
                MagiatalMaggia.jpg
                Mailand3.jpg
                Metlika_Bela Krajina Museum.jpg
                MilanoCastelloSforzesco.jpg
                MilanoDom.jpg
                MilazzoBurg.jpg
                Novo Mesto_Das Museum.jpg
                ObervellachBurgFalkenstein.jpg
                OdenseeAndersen.jpg
                Olimje_Kirche und Apotheke in Olimje.jpg
                Olomouc.jpg
                OlympischesMuseumLausanne.jpg
                OrleansMaisonJeannedArc.jpg
                OrleansParcFloraldelaSource.jpg
                OstiaAntica.jpg
                Ostrow Tumski.jpg
                PoertschachSchlossLeonstain.jpg
                Portoroz.jpg
                Posen.jpg
                Postojna.jpg
                Prag Altstaedter Ring.jpg
                Prag Waldsteinpalais.jpg
                RouenNotreDame.jpg
                Salzbergwerk Bex.jpg
                SalzbergwerkWieliczka.jpg
                SalzburgFestungHohensalzburg.jpg
                SalzburgResidenz.jpg
                WienMuseumsQuartier.jpg
                WienMusikverein.jpg
                WienRiesenrad.jpg
                WienRingstrasse.jpg
            images.php
            index.html
            indicator.gif
            json.html
            localdata.js
            main.css
            search.php
            search.phps
        jquery.autocomplete.css
        jquery.autocomplete.js
        jquery.autocomplete.min.js
        jquery.autocomplete.pack.js
        lib
            jquery.ajaxQueue.js
            jquery.bgiframe.min.js
            jquery.js
            thickbox-compressed.js
            thickbox.css
        todo
    jquery-ui-sliderAccess.js
    jquery-ui-timepicker-addon.css
    jquery-ui-timepicker-addon.js
    jquery-ui.css
    jquery-ui.min.js
    jquery.min.js
    jscolor
        arrow.gif
        cross.gif
        demo.html
        hs.png
        hv.png
        jscolor.js
    style.css
script.js
stylesmenu.css
system
    .htaccess
    core
        Benchmark.php
        CodeIgniter.php
        Common.php
        Config.php
        Controller.php
        Exceptions.php
        Hooks.php
        Input.php
        Lang.php
        Loader.php
        Log.php
        Model.php
        Output.php
        Router.php
        Security.php
        URI.php
        Utf8.php
        compat
            hash.php
            index.html
            mbstring.php
            password.php
            standard.php
        index.html
    database
        DB.php
        DB_active_rec.php
        DB_cache.php
        DB_driver.php
        DB_forge.php
        DB_query_builder.php
        DB_result.php
        DB_utility.php
        drivers
            cubrid
                cubrid_driver.php
                cubrid_forge.php
                cubrid_result.php
                cubrid_utility.php
                index.html
            ibase
                ibase_driver.php
                ibase_forge.php
                ibase_result.php
                ibase_utility.php
                index.html
            index.html
            mssql
                index.html
                mssql_driver.php
                mssql_forge.php
                mssql_result.php
                mssql_utility.php
            mysql
                index.html
                mysql_driver.php
                mysql_forge.php
                mysql_result.php
                mysql_utility.php
            mysqli
                index.html
                mysqli_driver.php
                mysqli_forge.php
                mysqli_result.php
                mysqli_utility.php
            oci8
                index.html
                oci8_driver.php
                oci8_forge.php
                oci8_result.php
                oci8_utility.php
            odbc
                index.html
                odbc_driver.php
                odbc_forge.php
                odbc_result.php
                odbc_utility.php
            pdo
                index.html
                pdo_driver.php
                pdo_forge.php
                pdo_result.php
                pdo_utility.php
                subdrivers
                    index.html
                    pdo_4d_driver.php
                    pdo_4d_forge.php
                    pdo_cubrid_driver.php
                    pdo_cubrid_forge.php
                    pdo_dblib_driver.php
                    pdo_dblib_forge.php
                    pdo_firebird_driver.php
                    pdo_firebird_forge.php
                    pdo_ibm_driver.php
                    pdo_ibm_forge.php
                    pdo_informix_driver.php
                    pdo_informix_forge.php
                    pdo_mysql_driver.php
                    pdo_mysql_forge.php
                    pdo_oci_driver.php
                    pdo_oci_forge.php
                    pdo_odbc_driver.php
                    pdo_odbc_forge.php
                    pdo_pgsql_driver.php
                    pdo_pgsql_forge.php
                    pdo_sqlite_driver.php
                    pdo_sqlite_forge.php
                    pdo_sqlsrv_driver.php
                    pdo_sqlsrv_forge.php
            postgre
                index.html
                postgre_driver.php
                postgre_forge.php
                postgre_result.php
                postgre_utility.php
            sqlite
                index.html
                sqlite_driver.php
                sqlite_forge.php
                sqlite_result.php
                sqlite_utility.php
            sqlite3
                index.html
                sqlite3_driver.php
                sqlite3_forge.php
                sqlite3_result.php
                sqlite3_utility.php
            sqlsrv
                index.html
                sqlsrv_driver.php
                sqlsrv_forge.php
                sqlsrv_result.php
                sqlsrv_utility.php
        index.html
    fonts
        index.html
        texb.ttf
    helpers
        array_helper.php
        captcha_helper.php
        cookie_helper.php
        date_helper.php
        directory_helper.php
        download_helper.php
        email_helper.php
        file_helper.php
        form_helper.php
        html_helper.php
        index.html
        inflector_helper.php
        language_helper.php
        number_helper.php
        path_helper.php
        security_helper.php
        smiley_helper.php
        string_helper.php
        text_helper.php
        typography_helper.php
        url_helper.php
        xml_helper.php
    index.html
    language
        english
            calendar_lang.php
            date_lang.php
            db_lang.php
            email_lang.php
            form_validation_lang.php
            ftp_lang.php
            imglib_lang.php
            index.html
            migration_lang.php
            number_lang.php
            pagination_lang.php
            profiler_lang.php
            unit_test_lang.php
            upload_lang.php
        index.html
    libraries
        Cache
            Cache.php
            drivers
                Cache_apc.php
                Cache_dummy.php
                Cache_file.php
                Cache_memcached.php
                Cache_redis.php
                Cache_wincache.php
                index.html
            index.html
        Calendar.php
        Cart.php
        Driver.php
        Email.php
        Encrypt.php
        Encryption.php
        Form_validation.php
        Ftp.php
        Image_lib.php
        Javascript
            Jquery.php
            index.html
        Javascript.php
        Log.php
        Migration.php
        Pagination.php
        Parser.php
        Profiler.php
        Session
            Session.php
            SessionHandlerInterface.php
            Session_driver.php
            drivers
                Session_database_driver.php
                Session_files_driver.php
                Session_memcached_driver.php
                Session_redis_driver.php
                index.html
            index.html
        Session.php
        Sha1.php
        Table.php
        Trackback.php
        Typography.php
        Unit_test.php
        Upload.php
        User_agent.php
        Xmlrpc.php
        Xmlrpcs.php
        Zip.php
        index.html
uploads
    sys.txt
<?php
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP
 *
 * This content is released under the MIT License (MIT)
 *
 * Copyright (c) 2014 - 2016, 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 - 2016, 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');

/**
 * Loader Class
 *
 * Loads framework components.
 *
 * @package		CodeIgniter
 * @subpackage	Libraries
 * @category	Loader
 * @author		EllisLab Dev Team
 * @link		https://codeigniter.com/user_guide/libraries/loader.html
 */
class CI_Loader {

	// All these are set automatically. Don't mess with them.
	/**
	 * Nesting level of the output buffering mechanism
	 *
	 * @var	int
	 */
	protected $_ci_ob_level;

	/**
	 * List of paths to load views from
	 *
	 * @var	array
	 */
	protected $_ci_view_paths =	array(VIEWPATH	=> TRUE);

	/**
	 * List of paths to load libraries from
	 *
	 * @var	array
	 */
	protected $_ci_library_paths =	array(APPPATH, BASEPATH);

	/**
	 * List of paths to load models from
	 *
	 * @var	array
	 */
	protected $_ci_model_paths =	array(APPPATH);

	/**
	 * List of paths to load helpers from
	 *
	 * @var	array
	 */
	protected $_ci_helper_paths =	array(APPPATH, BASEPATH);

	/**
	 * List of cached variables
	 *
	 * @var	array
	 */
	protected $_ci_cached_vars =	array();

	/**
	 * List of loaded classes
	 *
	 * @var	array
	 */
	protected $_ci_classes =	array();

	/**
	 * List of loaded models
	 *
	 * @var	array
	 */
	protected $_ci_models =	array();

	/**
	 * List of loaded helpers
	 *
	 * @var	array
	 */
	protected $_ci_helpers =	array();

	/**
	 * List of class name mappings
	 *
	 * @var	array
	 */
	protected $_ci_varmap =	array(
		'unit_test' => 'unit',
		'user_agent' => 'agent'
	);

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

	/**
	 * Class constructor
	 *
	 * Sets component load paths, gets the initial output buffering level.
	 *
	 * @return	void
	 */
	public function __construct()
	{
		$this->_ci_ob_level = ob_get_level();
		$this->_ci_classes =& is_loaded();

		log_message('info', 'Loader Class Initialized');
	}

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

	/**
	 * Initializer
	 *
	 * @todo	Figure out a way to move this to the constructor
	 *		without breaking *package_path*() methods.
	 * @uses	CI_Loader::_ci_autoloader()
	 * @used-by	CI_Controller::__construct()
	 * @return	void
	 */
	public function initialize()
	{
		$this->_ci_autoloader();
	}

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

	/**
	 * Is Loaded
	 *
	 * A utility method to test if a class is in the self::$_ci_classes array.
	 *
	 * @used-by	Mainly used by Form Helper function _get_validation_object().
	 *
	 * @param 	string		$class	Class name to check for
	 * @return 	string|bool	Class object name if loaded or FALSE
	 */
	public function is_loaded($class)
	{
		return array_search(ucfirst($class), $this->_ci_classes, TRUE);
	}

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

	/**
	 * Library Loader
	 *
	 * Loads and instantiates libraries.
	 * Designed to be called from application controllers.
	 *
	 * @param	string	$library	Library name
	 * @param	array	$params		Optional parameters to pass to the library class constructor
	 * @param	string	$object_name	An optional object name to assign to
	 * @return	object
	 */
	public function library($library, $params = NULL, $object_name = NULL)
	{
		if (empty($library))
		{
			return $this;
		}
		elseif (is_array($library))
		{
			foreach ($library as $key => $value)
			{
				if (is_int($key))
				{
					$this->library($value, $params);
				}
				else
				{
					$this->library($key, $params, $value);
				}
			}

			return $this;
		}

		if ($params !== NULL && ! is_array($params))
		{
			$params = NULL;
		}

		$this->_ci_load_library($library, $params, $object_name);
		return $this;
	}

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

	/**
	 * Model Loader
	 *
	 * Loads and instantiates models.
	 *
	 * @param	string	$model		Model name
	 * @param	string	$name		An optional object name to assign to
	 * @param	bool	$db_conn	An optional database connection configuration to initialize
	 * @return	object
	 */
	public function model($model, $name = '', $db_conn = FALSE)
	{
		if (empty($model))
		{
			return $this;
		}
		elseif (is_array($model))
		{
			foreach ($model as $key => $value)
			{
				is_int($key) ? $this->model($value, '', $db_conn) : $this->model($key, $value, $db_conn);
			}

			return $this;
		}

		$path = '';

		// Is the model in a sub-folder? If so, parse out the filename and path.
		if (($last_slash = strrpos($model, '/')) !== FALSE)
		{
			// The path is in front of the last slash
			$path = substr($model, 0, ++$last_slash);

			// And the model name behind it
			$model = substr($model, $last_slash);
		}

		if (empty($name))
		{
			$name = $model;
		}

		if (in_array($name, $this->_ci_models, TRUE))
		{
			return $this;
		}

		$CI =& get_instance();
		if (isset($CI->$name))
		{
			throw new RuntimeException('The model name you are loading is the name of a resource that is already being used: '.$name);
		}

		if ($db_conn !== FALSE && ! class_exists('CI_DB', FALSE))
		{
			if ($db_conn === TRUE)
			{
				$db_conn = '';
			}

			$this->database($db_conn, FALSE, TRUE);
		}

		// Note: All of the code under this condition used to be just:
		//
		//       load_class('Model', 'core');
		//
		//       However, load_class() instantiates classes
		//       to cache them for later use and that prevents
		//       MY_Model from being an abstract class and is
		//       sub-optimal otherwise anyway.
		if ( ! class_exists('CI_Model', FALSE))
		{
			$app_path = APPPATH.'core'.DIRECTORY_SEPARATOR;
			if (file_exists($app_path.'Model.php'))
			{
				require_once($app_path.'Model.php');
				if ( ! class_exists('CI_Model', FALSE))
				{
					throw new RuntimeException($app_path."Model.php exists, but doesn't declare class CI_Model");
				}
			}
			elseif ( ! class_exists('CI_Model', FALSE))
			{
				require_once(BASEPATH.'core'.DIRECTORY_SEPARATOR.'Model.php');
			}

			$class = config_item('subclass_prefix').'Model';
			if (file_exists($app_path.$class.'.php'))
			{
				require_once($app_path.$class.'.php');
				if ( ! class_exists($class, FALSE))
				{
					throw new RuntimeException($app_path.$class.".php exists, but doesn't declare class ".$class);
				}
			}
		}

		$model = ucfirst($model);
		if ( ! class_exists($model, FALSE))
		{
			foreach ($this->_ci_model_paths as $mod_path)
			{
				if ( ! file_exists($mod_path.'models/'.$path.$model.'.php'))
				{
					continue;
				}

				require_once($mod_path.'models/'.$path.$model.'.php');
				if ( ! class_exists($model, FALSE))
				{
					throw new RuntimeException($mod_path."models/".$path.$model.".php exists, but doesn't declare class ".$model);
				}

				break;
			}

			if ( ! class_exists($model, FALSE))
			{
				throw new RuntimeException('Unable to locate the model you have specified: '.$model);
			}
		}
		elseif ( ! is_subclass_of($model, 'CI_Model'))
		{
			throw new RuntimeException("Class ".$model." already exists and doesn't extend CI_Model");
		}

		$this->_ci_models[] = $name;
		$CI->$name = new $model();
		return $this;
	}

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

	/**
	 * Database Loader
	 *
	 * @param	mixed	$params		Database configuration options
	 * @param	bool	$return 	Whether to return the database object
	 * @param	bool	$query_builder	Whether to enable Query Builder
	 *					(overrides the configuration setting)
	 *
	 * @return	object|bool	Database object if $return is set to TRUE,
	 *					FALSE on failure, CI_Loader instance in any other case
	 */
	public function database($params = '', $return = FALSE, $query_builder = NULL)
	{
		// Grab the super object
		$CI =& get_instance();

		// Do we even need to load the database class?
		if ($return === FALSE && $query_builder === NULL && isset($CI->db) && is_object($CI->db) && ! empty($CI->db->conn_id))
		{
			return FALSE;
		}

		require_once(BASEPATH.'database/DB.php');

		if ($return === TRUE)
		{
			return DB($params, $query_builder);
		}

		// Initialize the db variable. Needed to prevent
		// reference errors with some configurations
		$CI->db = '';

		// Load the DB class
		$CI->db =& DB($params, $query_builder);
		return $this;
	}

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

	/**
	 * Load the Database Utilities Class
	 *
	 * @param	object	$db	Database object
	 * @param	bool	$return	Whether to return the DB Utilities class object or not
	 * @return	object
	 */
	public function dbutil($db = NULL, $return = FALSE)
	{
		$CI =& get_instance();

		if ( ! is_object($db) OR ! ($db instanceof CI_DB))
		{
			class_exists('CI_DB', FALSE) OR $this->database();
			$db =& $CI->db;
		}

		require_once(BASEPATH.'database/DB_utility.php');
		require_once(BASEPATH.'database/drivers/'.$db->dbdriver.'/'.$db->dbdriver.'_utility.php');
		$class = 'CI_DB_'.$db->dbdriver.'_utility';

		if ($return === TRUE)
		{
			return new $class($db);
		}

		$CI->dbutil = new $class($db);
		return $this;
	}

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

	/**
	 * Load the Database Forge Class
	 *
	 * @param	object	$db	Database object
	 * @param	bool	$return	Whether to return the DB Forge class object or not
	 * @return	object
	 */
	public function dbforge($db = NULL, $return = FALSE)
	{
		$CI =& get_instance();
		if ( ! is_object($db) OR ! ($db instanceof CI_DB))
		{
			class_exists('CI_DB', FALSE) OR $this->database();
			$db =& $CI->db;
		}

		require_once(BASEPATH.'database/DB_forge.php');
		require_once(BASEPATH.'database/drivers/'.$db->dbdriver.'/'.$db->dbdriver.'_forge.php');

		if ( ! empty($db->subdriver))
		{
			$driver_path = BASEPATH.'database/drivers/'.$db->dbdriver.'/subdrivers/'.$db->dbdriver.'_'.$db->subdriver.'_forge.php';
			if (file_exists($driver_path))
			{
				require_once($driver_path);
				$class = 'CI_DB_'.$db->dbdriver.'_'.$db->subdriver.'_forge';
			}
		}
		else
		{
			$class = 'CI_DB_'.$db->dbdriver.'_forge';
		}

		if ($return === TRUE)
		{
			return new $class($db);
		}

		$CI->dbforge = new $class($db);
		return $this;
	}

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

	/**
	 * View Loader
	 *
	 * Loads "view" files.
	 *
	 * @param	string	$view	View name
	 * @param	array	$vars	An associative array of data
	 *				to be extracted for use in the view
	 * @param	bool	$return	Whether to return the view output
	 *				or leave it to the Output class
	 * @return	object|string
	 */
	public function view($view, $vars = array(), $return = FALSE)
	{
		return $this->_ci_load(array('_ci_view' => $view, '_ci_vars' => $this->_ci_object_to_array($vars), '_ci_return' => $return));
	}

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

	/**
	 * Generic File Loader
	 *
	 * @param	string	$path	File path
	 * @param	bool	$return	Whether to return the file output
	 * @return	object|string
	 */
	public function file($path, $return = FALSE)
	{
		return $this->_ci_load(array('_ci_path' => $path, '_ci_return' => $return));
	}

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

	/**
	 * Set Variables
	 *
	 * Once variables are set they become available within
	 * the controller class and its "view" files.
	 *
	 * @param	array|object|string	$vars
	 *					An associative array or object containing values
	 *					to be set, or a value's name if string
	 * @param 	string	$val	Value to set, only used if $vars is a string
	 * @return	object
	 */
	public function vars($vars, $val = '')
	{
		if (is_string($vars))
		{
			$vars = array($vars => $val);
		}

		$vars = $this->_ci_object_to_array($vars);

		if (is_array($vars) && count($vars) > 0)
		{
			foreach ($vars as $key => $val)
			{
				$this->_ci_cached_vars[$key] = $val;
			}
		}

		return $this;
	}

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

	/**
	 * Clear Cached Variables
	 *
	 * Clears the cached variables.
	 *
	 * @return	CI_Loader
	 */
	public function clear_vars()
	{
		$this->_ci_cached_vars = array();
		return $this;
	}

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

	/**
	 * Get Variable
	 *
	 * Check if a variable is set and retrieve it.
	 *
	 * @param	string	$key	Variable name
	 * @return	mixed	The variable or NULL if not found
	 */
	public function get_var($key)
	{
		return isset($this->_ci_cached_vars[$key]) ? $this->_ci_cached_vars[$key] : NULL;
	}

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

	/**
	 * Get Variables
	 *
	 * Retrieves all loaded variables.
	 *
	 * @return	array
	 */
	public function get_vars()
	{
		return $this->_ci_cached_vars;
	}

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

	/**
	 * Helper Loader
	 *
	 * @param	string|string[]	$helpers	Helper name(s)
	 * @return	object
	 */
	public function helper($helpers = array())
	{
		foreach ($this->_ci_prep_filename($helpers, '_helper') as $helper)
		{
			if (isset($this->_ci_helpers[$helper]))
			{
				continue;
			}

			// Is this a helper extension request?
			$ext_helper = config_item('subclass_prefix').$helper;
			$ext_loaded = FALSE;
			foreach ($this->_ci_helper_paths as $path)
			{
				if (file_exists($path.'helpers/'.$ext_helper.'.php'))
				{
					include_once($path.'helpers/'.$ext_helper.'.php');
					$ext_loaded = TRUE;
				}
			}

			// If we have loaded extensions - check if the base one is here
			if ($ext_loaded === TRUE)
			{
				$base_helper = BASEPATH.'helpers/'.$helper.'.php';
				if ( ! file_exists($base_helper))
				{
					show_error('Unable to load the requested file: helpers/'.$helper.'.php');
				}

				include_once($base_helper);
				$this->_ci_helpers[$helper] = TRUE;
				log_message('info', 'Helper loaded: '.$helper);
				continue;
			}

			// No extensions found ... try loading regular helpers and/or overrides
			foreach ($this->_ci_helper_paths as $path)
			{
				if (file_exists($path.'helpers/'.$helper.'.php'))
				{
					include_once($path.'helpers/'.$helper.'.php');

					$this->_ci_helpers[$helper] = TRUE;
					log_message('info', 'Helper loaded: '.$helper);
					break;
				}
			}

			// unable to load the helper
			if ( ! isset($this->_ci_helpers[$helper]))
			{
				show_error('Unable to load the requested file: helpers/'.$helper.'.php');
			}
		}

		return $this;
	}

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

	/**
	 * Load Helpers
	 *
	 * An alias for the helper() method in case the developer has
	 * written the plural form of it.
	 *
	 * @uses	CI_Loader::helper()
	 * @param	string|string[]	$helpers	Helper name(s)
	 * @return	object
	 */
	public function helpers($helpers = array())
	{
		return $this->helper($helpers);
	}

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

	/**
	 * Language Loader
	 *
	 * Loads language files.
	 *
	 * @param	string|string[]	$files	List of language file names to load
	 * @param	string		Language name
	 * @return	object
	 */
	public function language($files, $lang = '')
	{
		get_instance()->lang->load($files, $lang);
		return $this;
	}

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

	/**
	 * Config Loader
	 *
	 * Loads a config file (an alias for CI_Config::load()).
	 *
	 * @uses	CI_Config::load()
	 * @param	string	$file			Configuration file name
	 * @param	bool	$use_sections		Whether configuration values should be loaded into their own section
	 * @param	bool	$fail_gracefully	Whether to just return FALSE or display an error message
	 * @return	bool	TRUE if the file was loaded correctly or FALSE on failure
	 */
	public function config($file, $use_sections = FALSE, $fail_gracefully = FALSE)
	{
		return get_instance()->config->load($file, $use_sections, $fail_gracefully);
	}

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

	/**
	 * Driver Loader
	 *
	 * Loads a driver library.
	 *
	 * @param	string|string[]	$library	Driver name(s)
	 * @param	array		$params		Optional parameters to pass to the driver
	 * @param	string		$object_name	An optional object name to assign to
	 *
	 * @return	object|bool	Object or FALSE on failure if $library is a string
	 *				and $object_name is set. CI_Loader instance otherwise.
	 */
	public function driver($library, $params = NULL, $object_name = NULL)
	{
		if (is_array($library))
		{
			foreach ($library as $key => $value)
			{
				if (is_int($key))
				{
					$this->driver($value, $params);
				}
				else
				{
					$this->driver($key, $params, $value);
				}
			}

			return $this;
		}
		elseif (empty($library))
		{
			return FALSE;
		}

		if ( ! class_exists('CI_Driver_Library', FALSE))
		{
			// We aren't instantiating an object here, just making the base class available
			require BASEPATH.'libraries/Driver.php';
		}

		// We can save the loader some time since Drivers will *always* be in a subfolder,
		// and typically identically named to the library
		if ( ! strpos($library, '/'))
		{
			$library = ucfirst($library).'/'.$library;
		}

		return $this->library($library, $params, $object_name);
	}

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

	/**
	 * Add Package Path
	 *
	 * Prepends a parent path to the library, model, helper and config
	 * path arrays.
	 *
	 * @see	CI_Loader::$_ci_library_paths
	 * @see	CI_Loader::$_ci_model_paths
	 * @see CI_Loader::$_ci_helper_paths
	 * @see CI_Config::$_config_paths
	 *
	 * @param	string	$path		Path to add
	 * @param 	bool	$view_cascade	(default: TRUE)
	 * @return	object
	 */
	public function add_package_path($path, $view_cascade = TRUE)
	{
		$path = rtrim($path, '/').'/';

		array_unshift($this->_ci_library_paths, $path);
		array_unshift($this->_ci_model_paths, $path);
		array_unshift($this->_ci_helper_paths, $path);

		$this->_ci_view_paths = array($path.'views/' => $view_cascade) + $this->_ci_view_paths;

		// Add config file path
		$config =& $this->_ci_get_component('config');
		$config->_config_paths[] = $path;

		return $this;
	}

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

	/**
	 * Get Package Paths
	 *
	 * Return a list of all package paths.
	 *
	 * @param	bool	$include_base	Whether to include BASEPATH (default: FALSE)
	 * @return	array
	 */
	public function get_package_paths($include_base = FALSE)
	{
		return ($include_base === TRUE) ? $this->_ci_library_paths : $this->_ci_model_paths;
	}

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

	/**
	 * Remove Package Path
	 *
	 * Remove a path from the library, model, helper and/or config
	 * path arrays if it exists. If no path is provided, the most recently
	 * added path will be removed removed.
	 *
	 * @param	string	$path	Path to remove
	 * @return	object
	 */
	public function remove_package_path($path = '')
	{
		$config =& $this->_ci_get_component('config');

		if ($path === '')
		{
			array_shift($this->_ci_library_paths);
			array_shift($this->_ci_model_paths);
			array_shift($this->_ci_helper_paths);
			array_shift($this->_ci_view_paths);
			array_pop($config->_config_paths);
		}
		else
		{
			$path = rtrim($path, '/').'/';
			foreach (array('_ci_library_paths', '_ci_model_paths', '_ci_helper_paths') as $var)
			{
				if (($key = array_search($path, $this->{$var})) !== FALSE)
				{
					unset($this->{$var}[$key]);
				}
			}

			if (isset($this->_ci_view_paths[$path.'views/']))
			{
				unset($this->_ci_view_paths[$path.'views/']);
			}

			if (($key = array_search($path, $config->_config_paths)) !== FALSE)
			{
				unset($config->_config_paths[$key]);
			}
		}

		// make sure the application default paths are still in the array
		$this->_ci_library_paths = array_unique(array_merge($this->_ci_library_paths, array(APPPATH, BASEPATH)));
		$this->_ci_helper_paths = array_unique(array_merge($this->_ci_helper_paths, array(APPPATH, BASEPATH)));
		$this->_ci_model_paths = array_unique(array_merge($this->_ci_model_paths, array(APPPATH)));
		$this->_ci_view_paths = array_merge($this->_ci_view_paths, array(APPPATH.'views/' => TRUE));
		$config->_config_paths = array_unique(array_merge($config->_config_paths, array(APPPATH)));

		return $this;
	}

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

	/**
	 * Internal CI Data Loader
	 *
	 * Used to load views and files.
	 *
	 * Variables are prefixed with _ci_ to avoid symbol collision with
	 * variables made available to view files.
	 *
	 * @used-by	CI_Loader::view()
	 * @used-by	CI_Loader::file()
	 * @param	array	$_ci_data	Data to load
	 * @return	object
	 */
	protected function _ci_load($_ci_data)
	{
		// Set the default data variables
		foreach (array('_ci_view', '_ci_vars', '_ci_path', '_ci_return') as $_ci_val)
		{
			$$_ci_val = isset($_ci_data[$_ci_val]) ? $_ci_data[$_ci_val] : FALSE;
		}

		$file_exists = FALSE;

		// Set the path to the requested file
		if (is_string($_ci_path) && $_ci_path !== '')
		{
			$_ci_x = explode('/', $_ci_path);
			$_ci_file = end($_ci_x);
		}
		else
		{
			$_ci_ext = pathinfo($_ci_view, PATHINFO_EXTENSION);
			$_ci_file = ($_ci_ext === '') ? $_ci_view.'.php' : $_ci_view;

			foreach ($this->_ci_view_paths as $_ci_view_file => $cascade)
			{
				if (file_exists($_ci_view_file.$_ci_file))
				{
					$_ci_path = $_ci_view_file.$_ci_file;
					$file_exists = TRUE;
					break;
				}

				if ( ! $cascade)
				{
					break;
				}
			}
		}

		if ( ! $file_exists && ! file_exists($_ci_path))
		{
			show_error('Unable to load the requested file: '.$_ci_file);
		}

		// This allows anything loaded using $this->load (views, files, etc.)
		// to become accessible from within the Controller and Model functions.
		$_ci_CI =& get_instance();
		foreach (get_object_vars($_ci_CI) as $_ci_key => $_ci_var)
		{
			if ( ! isset($this->$_ci_key))
			{
				$this->$_ci_key =& $_ci_CI->$_ci_key;
			}
		}

		/*
		 * Extract and cache variables
		 *
		 * You can either set variables using the dedicated $this->load->vars()
		 * function or via the second parameter of this function. We'll merge
		 * the two types and cache them so that views that are embedded within
		 * other views can have access to these variables.
		 */
		if (is_array($_ci_vars))
		{
			foreach (array_keys($_ci_vars) as $key)
			{
				if (strncmp($key, '_ci_', 4) === 0)
				{
					unset($_ci_vars[$key]);
				}
			}

			$this->_ci_cached_vars = array_merge($this->_ci_cached_vars, $_ci_vars);
		}
		extract($this->_ci_cached_vars);

		/*
		 * Buffer the output
		 *
		 * We buffer the output for two reasons:
		 * 1. Speed. You get a significant speed boost.
		 * 2. So that the final rendered template can be post-processed by
		 *	the output class. Why do we need post processing? For one thing,
		 *	in order to show the elapsed page load time. Unless we can
		 *	intercept the content right before it's sent to the browser and
		 *	then stop the timer it won't be accurate.
		 */
		ob_start();

		// If the PHP installation does not support short tags we'll
		// do a little string replacement, changing the short tags
		// to standard PHP echo statements.
		if ( ! is_php('5.4') && ! ini_get('short_open_tag') && config_item('rewrite_short_tags') === TRUE)
		{
			echo eval('?>'.preg_replace('/;*\s*\?>/', '; ?>', str_replace('<?=', '<?php echo ', file_get_contents($_ci_path))));
		}
		else
		{
			include($_ci_path); // include() vs include_once() allows for multiple views with the same name
		}

		log_message('info', 'File loaded: '.$_ci_path);

		// Return the file data if requested
		if ($_ci_return === TRUE)
		{
			$buffer = ob_get_contents();
			@ob_end_clean();
			return $buffer;
		}

		/*
		 * Flush the buffer... or buff the flusher?
		 *
		 * In order to permit views to be nested within
		 * other views, we need to flush the content back out whenever
		 * we are beyond the first level of output buffering so that
		 * it can be seen and included properly by the first included
		 * template and any subsequent ones. Oy!
		 */
		if (ob_get_level() > $this->_ci_ob_level + 1)
		{
			ob_end_flush();
		}
		else
		{
			$_ci_CI->output->append_output(ob_get_contents());
			@ob_end_clean();
		}

		return $this;
	}

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

	/**
	 * Internal CI Library Loader
	 *
	 * @used-by	CI_Loader::library()
	 * @uses	CI_Loader::_ci_init_library()
	 *
	 * @param	string	$class		Class name to load
	 * @param	mixed	$params		Optional parameters to pass to the class constructor
	 * @param	string	$object_name	Optional object name to assign to
	 * @return	void
	 */
	protected function _ci_load_library($class, $params = NULL, $object_name = NULL)
	{
		// Get the class name, and while we're at it trim any slashes.
		// The directory path can be included as part of the class name,
		// but we don't want a leading slash
		$class = str_replace('.php', '', trim($class, '/'));

		// Was the path included with the class name?
		// We look for a slash to determine this
		if (($last_slash = strrpos($class, '/')) !== FALSE)
		{
			// Extract the path
			$subdir = substr($class, 0, ++$last_slash);

			// Get the filename from the path
			$class = substr($class, $last_slash);
		}
		else
		{
			$subdir = '';
		}

		$class = ucfirst($class);

		// Is this a stock library? There are a few special conditions if so ...
		if (file_exists(BASEPATH.'libraries/'.$subdir.$class.'.php'))
		{
			return $this->_ci_load_stock_library($class, $subdir, $params, $object_name);
		}

		// Let's search for the requested library file and load it.
		foreach ($this->_ci_library_paths as $path)
		{
			// BASEPATH has already been checked for
			if ($path === BASEPATH)
			{
				continue;
			}

			$filepath = $path.'libraries/'.$subdir.$class.'.php';

			// Safety: Was the class already loaded by a previous call?
			if (class_exists($class, FALSE))
			{
				// Before we deem this to be a duplicate request, let's see
				// if a custom object name is being supplied. If so, we'll
				// return a new instance of the object
				if ($object_name !== NULL)
				{
					$CI =& get_instance();
					if ( ! isset($CI->$object_name))
					{
						return $this->_ci_init_library($class, '', $params, $object_name);
					}
				}

				log_message('debug', $class.' class already loaded. Second attempt ignored.');
				return;
			}
			// Does the file exist? No? Bummer...
			elseif ( ! file_exists($filepath))
			{
				continue;
			}

			include_once($filepath);
			return $this->_ci_init_library($class, '', $params, $object_name);
		}

		// One last attempt. Maybe the library is in a subdirectory, but it wasn't specified?
		if ($subdir === '')
		{
			return $this->_ci_load_library($class.'/'.$class, $params, $object_name);
		}

		// If we got this far we were unable to find the requested class.
		log_message('error', 'Unable to load the requested class: '.$class);
		show_error('Unable to load the requested class: '.$class);
	}

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

	/**
	 * Internal CI Stock Library Loader
	 *
	 * @used-by	CI_Loader::_ci_load_library()
	 * @uses	CI_Loader::_ci_init_library()
	 *
	 * @param	string	$library	Library name to load
	 * @param	string	$file_path	Path to the library filename, relative to libraries/
	 * @param	mixed	$params		Optional parameters to pass to the class constructor
	 * @param	string	$object_name	Optional object name to assign to
	 * @return	void
	 */
	protected function _ci_load_stock_library($library_name, $file_path, $params, $object_name)
	{
		$prefix = 'CI_';

		if (class_exists($prefix.$library_name, FALSE))
		{
			if (class_exists(config_item('subclass_prefix').$library_name, FALSE))
			{
				$prefix = config_item('subclass_prefix');
			}

			// Before we deem this to be a duplicate request, let's see
			// if a custom object name is being supplied. If so, we'll
			// return a new instance of the object
			if ($object_name !== NULL)
			{
				$CI =& get_instance();
				if ( ! isset($CI->$object_name))
				{
					return $this->_ci_init_library($library_name, $prefix, $params, $object_name);
				}
			}

			log_message('debug', $library_name.' class already loaded. Second attempt ignored.');
			return;
		}

		$paths = $this->_ci_library_paths;
		array_pop($paths); // BASEPATH
		array_pop($paths); // APPPATH (needs to be the first path checked)
		array_unshift($paths, APPPATH);

		foreach ($paths as $path)
		{
			if (file_exists($path = $path.'libraries/'.$file_path.$library_name.'.php'))
			{
				// Override
				include_once($path);
				if (class_exists($prefix.$library_name, FALSE))
				{
					return $this->_ci_init_library($library_name, $prefix, $params, $object_name);
				}
				else
				{
					log_message('debug', $path.' exists, but does not declare '.$prefix.$library_name);
				}
			}
		}

		include_once(BASEPATH.'libraries/'.$file_path.$library_name.'.php');

		// Check for extensions
		$subclass = config_item('subclass_prefix').$library_name;
		foreach ($paths as $path)
		{
			if (file_exists($path = $path.'libraries/'.$file_path.$subclass.'.php'))
			{
				include_once($path);
				if (class_exists($subclass, FALSE))
				{
					$prefix = config_item('subclass_prefix');
					break;
				}
				else
				{
					log_message('debug', $path.' exists, but does not declare '.$subclass);
				}
			}
		}

		return $this->_ci_init_library($library_name, $prefix, $params, $object_name);
	}

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

	/**
	 * Internal CI Library Instantiator
	 *
	 * @used-by	CI_Loader::_ci_load_stock_library()
	 * @used-by	CI_Loader::_ci_load_library()
	 *
	 * @param	string		$class		Class name
	 * @param	string		$prefix		Class name prefix
	 * @param	array|null|bool	$config		Optional configuration to pass to the class constructor:
	 *						FALSE to skip;
	 *						NULL to search in config paths;
	 *						array containing configuration data
	 * @param	string		$object_name	Optional object name to assign to
	 * @return	void
	 */
	protected function _ci_init_library($class, $prefix, $config = FALSE, $object_name = NULL)
	{
		// Is there an associated config file for this class? Note: these should always be lowercase
		if ($config === NULL)
		{
			// Fetch the config paths containing any package paths
			$config_component = $this->_ci_get_component('config');

			if (is_array($config_component->_config_paths))
			{
				$found = FALSE;
				foreach ($config_component->_config_paths as $path)
				{
					// We test for both uppercase and lowercase, for servers that
					// are case-sensitive with regard to file names. Load global first,
					// override with environment next
					if (file_exists($path.'config/'.strtolower($class).'.php'))
					{
						include($path.'config/'.strtolower($class).'.php');
						$found = TRUE;
					}
					elseif (file_exists($path.'config/'.ucfirst(strtolower($class)).'.php'))
					{
						include($path.'config/'.ucfirst(strtolower($class)).'.php');
						$found = TRUE;
					}

					if (file_exists($path.'config/'.ENVIRONMENT.'/'.strtolower($class).'.php'))
					{
						include($path.'config/'.ENVIRONMENT.'/'.strtolower($class).'.php');
						$found = TRUE;
					}
					elseif (file_exists($path.'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).'.php'))
					{
						include($path.'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).'.php');
						$found = TRUE;
					}

					// Break on the first found configuration, thus package
					// files are not overridden by default paths
					if ($found === TRUE)
					{
						break;
					}
				}
			}
		}

		$class_name = $prefix.$class;

		// Is the class name valid?
		if ( ! class_exists($class_name, FALSE))
		{
			log_message('error', 'Non-existent class: '.$class_name);
			show_error('Non-existent class: '.$class_name);
		}

		// Set the variable name we will assign the class to
		// Was a custom class name supplied? If so we'll use it
		if (empty($object_name))
		{
			$object_name = strtolower($class);
			if (isset($this->_ci_varmap[$object_name]))
			{
				$object_name = $this->_ci_varmap[$object_name];
			}
		}

		// Don't overwrite existing properties
		$CI =& get_instance();
		if (isset($CI->$object_name))
		{
			if ($CI->$object_name instanceof $class_name)
			{
				log_message('debug', $class_name." has already been instantiated as '".$object_name."'. Second attempt aborted.");
				return;
			}

			show_error("Resource '".$object_name."' already exists and is not a ".$class_name." instance.");
		}

		// Save the class name and object name
		$this->_ci_classes[$object_name] = $class;

		// Instantiate the class
		$CI->$object_name = isset($config)
			? new $class_name($config)
			: new $class_name();
	}

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

	/**
	 * CI Autoloader
	 *
	 * Loads component listed in the config/autoload.php file.
	 *
	 * @used-by	CI_Loader::initialize()
	 * @return	void
	 */
	protected function _ci_autoloader()
	{
		if (file_exists(APPPATH.'config/autoload.php'))
		{
			include(APPPATH.'config/autoload.php');
		}

		if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/autoload.php'))
		{
			include(APPPATH.'config/'.ENVIRONMENT.'/autoload.php');
		}

		if ( ! isset($autoload))
		{
			return;
		}

		// Autoload packages
		if (isset($autoload['packages']))
		{
			foreach ($autoload['packages'] as $package_path)
			{
				$this->add_package_path($package_path);
			}
		}

		// Load any custom config file
		if (count($autoload['config']) > 0)
		{
			foreach ($autoload['config'] as $val)
			{
				$this->config($val);
			}
		}

		// Autoload helpers and languages
		foreach (array('helper', 'language') as $type)
		{
			if (isset($autoload[$type]) && count($autoload[$type]) > 0)
			{
				$this->$type($autoload[$type]);
			}
		}

		// Autoload drivers
		if (isset($autoload['drivers']))
		{
			$this->driver($autoload['drivers']);
		}

		// Load libraries
		if (isset($autoload['libraries']) && count($autoload['libraries']) > 0)
		{
			// Load the database driver.
			if (in_array('database', $autoload['libraries']))
			{
				$this->database();
				$autoload['libraries'] = array_diff($autoload['libraries'], array('database'));
			}

			// Load all other libraries
			$this->library($autoload['libraries']);
		}

		// Autoload models
		if (isset($autoload['model']))
		{
			$this->model($autoload['model']);
		}
	}

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

	/**
	 * CI Object to Array translator
	 *
	 * Takes an object as input and converts the class variables to
	 * an associative array with key/value pairs.
	 *
	 * @param	object	$object	Object data to translate
	 * @return	array
	 */
	protected function _ci_object_to_array($object)
	{
		return is_object($object) ? get_object_vars($object) : $object;
	}

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

	/**
	 * CI Component getter
	 *
	 * Get a reference to a specific library or model.
	 *
	 * @param 	string	$component	Component name
	 * @return	bool
	 */
	protected function &_ci_get_component($component)
	{
		$CI =& get_instance();
		return $CI->$component;
	}

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

	/**
	 * Prep filename
	 *
	 * This function prepares filenames of various items to
	 * make their loading more reliable.
	 *
	 * @param	string|string[]	$filename	Filename(s)
	 * @param 	string		$extension	Filename extension
	 * @return	array
	 */
	protected function _ci_prep_filename($filename, $extension)
	{
		if ( ! is_array($filename))
		{
			return array(strtolower(str_replace(array($extension, '.php'), '', $filename).$extension));
		}
		else
		{
			foreach ($filename as $key => $val)
			{
				$filename[$key] = strtolower(str_replace(array($extension, '.php'), '', $val).$extension);
			}

			return $filename;
		}
	}

}




Copyright © 2015-2020 - by Lucas SOS | About the Author | Tags | Blog | Links