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<?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');

/**
 * CodeIgniter Smiley Helpers
 *
 * @package             CodeIgniter
 * @subpackage  Helpers
 * @category    Helpers
 * @author              EllisLab Dev Team
 * @link                https://codeigniter.com/user_guide/helpers/smiley_helper.html
 * @deprecated  3.0.0   This helper is too specific for CI.
 */

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

if ( ! function_exists('smiley_js'))
{
        /**
         * Smiley Javascript
         *
         * Returns the javascript required for the smiley insertion.  Optionally takes
         * an array of aliases to loosely couple the smiley array to the view.
         *
         * @param       mixed   alias name or array of alias->field_id pairs
         * @param       string  field_id if alias name was passed in
         * @param       bool
         * @return      array
         */
        function smiley_js($alias = '', $field_id = '', $inline = TRUE)
        {
                static $do_setup = TRUE;
                $r = '';

                if ($alias !== '' && ! is_array($alias))
                {
                        $alias = array($alias => $field_id);
                }

                if ($do_setup === TRUE)
                {
                        $do_setup = FALSE;
                        $m = array();

                        if (is_array($alias))
                        {
                                foreach ($alias as $name => $id)
                                {
                                        $m[] = '"'.$name.'" : "'.$id.'"';
                                }
                        }

                        $m = '{'.implode(',', $m).'}';

                        $r .= <<<EOF
                        var smiley_map = {$m};

                        function insert_smiley(smiley, field_id) {
                                var el = document.getElementById(field_id), newStart;

                                if ( ! el && smiley_map[field_id]) {
                                        el = document.getElementById(smiley_map[field_id]);

                                        if ( ! el)
                                                return false;
                                }

                                el.focus();
                                smiley = " " + smiley;

                                if ('selectionStart' in el) {
                                        newStart = el.selectionStart + smiley.length;

                                        el.value = el.value.substr(0, el.selectionStart) +
                                                                        smiley +
                                                                        el.value.substr(el.selectionEnd, el.value.length);
                                        el.setSelectionRange(newStart, newStart);
                                }
                                else if (document.selection) {
                                        document.selection.createRange().text = smiley;
                                }
                        }
EOF;
                }
                elseif (is_array($alias))
                {
                        foreach ($alias as $name => $id)
                        {
                                $r .= 'smiley_map["'.$name.'"] = "'.$id."\";\n";
                        }
                }

                return ($inline)
                        ? '<script type="text/javascript" charset="utf-8">/*<![CDATA[ */'.$r.'// ]]></script>'
                        : $r;
        }
}

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

if ( ! function_exists('get_clickable_smileys'))
{
        /**
         * Get Clickable Smileys
         *
         * Returns an array of image tag links that can be clicked to be inserted
         * into a form field.
         *
         * @param       string  the URL to the folder containing the smiley images
         * @param       array
         * @return      array
         */
        function get_clickable_smileys($image_url, $alias = '')
        {
                // For backward compatibility with js_insert_smiley
                if (is_array($alias))
                {
                        $smileys = $alias;
                }
                elseif (FALSE === ($smileys = _get_smiley_array()))
                {
                        return FALSE;
                }

                // Add a trailing slash to the file path if needed
                $image_url = rtrim($image_url, '/').'/';

                $used = array();
                foreach ($smileys as $key => $val)
                {
                        // Keep duplicates from being used, which can happen if the
                        // mapping array contains multiple identical replacements. For example:
                        // :-) and :) might be replaced with the same image so both smileys
                        // will be in the array.
                        if (isset($used[$smileys[$key][0]]))
                        {
                                continue;
                        }

                        $link[] = '<a href="javascript:void(0);" onclick="insert_smiley(\''.$key.'\', \''.$alias.'\')"><img src="'.$image_url.$smileys[$key][0].'" alt="'.$smileys[$key][3].'" style="width: '.$smileys[$key][1].'; height: '.$smileys[$key][2].'; border: 0;" /></a>';
                        $used[$smileys[$key][0]] = TRUE;
                }

                return $link;
        }
}

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

if ( ! function_exists('parse_smileys'))
{
        /**
         * Parse Smileys
         *
         * Takes a string as input and swaps any contained smileys for the actual image
         *
         * @param       string  the text to be parsed
         * @param       string  the URL to the folder containing the smiley images
         * @param       array
         * @return      string
         */
        function parse_smileys($str = '', $image_url = '', $smileys = NULL)
        {
                if ($image_url === '' OR ( ! is_array($smileys) && FALSE === ($smileys = _get_smiley_array())))
                {
                        return $str;
                }

                // Add a trailing slash to the file path if needed
                $image_url = rtrim($image_url, '/').'/';

                foreach ($smileys as $key => $val)
                {
                        $str = str_replace($key, '<img src="'.$image_url.$smileys[$key][0].'" alt="'.$smileys[$key][3].'" style="width: '.$smileys[$key][1].'; height: '.$smileys[$key][2].'; border: 0;" />', $str);
                }

                return $str;
        }
}

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

if ( ! function_exists('_get_smiley_array'))
{
        /**
         * Get Smiley Array
         *
         * Fetches the config/smiley.php file
         *
         * @return      mixed
         */
        function _get_smiley_array()
        {
                static $_smileys;

                if ( ! is_array($_smileys))
                {
                        if (file_exists(APPPATH.'config/smileys.php'))
                        {
                                include(APPPATH.'config/smileys.php');
                        }

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

                        if (empty($smileys) OR ! is_array($smileys))
                        {
                                $_smileys = array();
                                return FALSE;
                        }

                        $_smileys = $smileys;
                }

                return $_smileys;
        }
}