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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 URL Helpers** @package CodeIgniter* @subpackage Helpers* @category Helpers* @author EllisLab Dev Team* @link https://codeigniter.com/user_guide/helpers/url_helper.html*/// ------------------------------------------------------------------------if ( ! function_exists('site_url')){/*** Site URL** Create a local URL based on your basepath. Segments can be passed via the* first parameter either as a string or an array.** @param string $uri* @param string $protocol* @return string*/function site_url($uri = '', $protocol = NULL){return get_instance()->config->site_url($uri, $protocol);}}// ------------------------------------------------------------------------if ( ! function_exists('base_url')){/*** Base URL** Create a local URL based on your basepath.* Segments can be passed in as a string or an array, same as site_url* or a URL to a file can be passed in, e.g. to an image file.** @param string $uri* @param string $protocol* @return string*/function base_url($uri = '', $protocol = NULL){return get_instance()->config->base_url($uri, $protocol);}}// ------------------------------------------------------------------------if ( ! function_exists('current_url')){/*** Current URL** Returns the full URL (including segments) of the page where this* function is placed** @return string*/function current_url(){$CI =& get_instance();return $CI->config->site_url($CI->uri->uri_string());}}// ------------------------------------------------------------------------if ( ! function_exists('uri_string')){/*** URL String** Returns the URI segments.** @return string*/function uri_string(){return get_instance()->uri->uri_string();}}// ------------------------------------------------------------------------if ( ! function_exists('index_page')){/*** Index page** Returns the "index_page" from your config file** @return string*/function index_page(){return get_instance()->config->item('index_page');}}// ------------------------------------------------------------------------if ( ! function_exists('anchor')){/*** Anchor Link** Creates an anchor based on the local URL.** @param string the URL* @param string the link title* @param mixed any attributes* @return string*/function anchor($uri = '', $title = '', $attributes = ''){$title = (string) $title;$site_url = is_array($uri)? site_url($uri): (preg_match('#^(\w+:)?//#i', $uri) ? $uri : site_url($uri));if ($title === ''){$title = $site_url;}if ($attributes !== ''){$attributes = _stringify_attributes($attributes);}return '<a href="'.$site_url.'"'.$attributes.'>'.$title.'</a>';}}// ------------------------------------------------------------------------if ( ! function_exists('anchor_popup')){/*** Anchor Link - Pop-up version** Creates an anchor based on the local URL. The link* opens a new window based on the attributes specified.** @param string the URL* @param string the link title* @param mixed any attributes* @return string*/function anchor_popup($uri = '', $title = '', $attributes = FALSE){$title = (string) $title;$site_url = preg_match('#^(\w+:)?//#i', $uri) ? $uri : site_url($uri);if ($title === ''){$title = $site_url;}if ($attributes === FALSE){return '<a href="'.$site_url.'" onclick="window.open(\''.$site_url."', '_blank'); return false;\">".$title.'</a>';}if ( ! is_array($attributes)){$attributes = array($attributes);// Ref: http://www.w3schools.com/jsref/met_win_open.asp$window_name = '_blank';}elseif ( ! empty($attributes['window_name'])){$window_name = $attributes['window_name'];unset($attributes['window_name']);}else{$window_name = '_blank';}foreach (array('width' => '800', 'height' => '600', 'scrollbars' => 'yes', 'menubar' => 'no', 'status' => 'yes', 'resizable' => 'yes', 'screenx' => '0', 'screeny' => '0') as $key => $val){$atts[$key] = isset($attributes[$key]) ? $attributes[$key] : $val;unset($attributes[$key]);}$attributes = _stringify_attributes($attributes);return '<a href="'.$site_url.'" onclick="window.open(\''.$site_url."', '".$window_name."', '"._stringify_attributes($atts, TRUE)."'); return false;\"".$attributes.'>'.$title.'</a>';}}// ------------------------------------------------------------------------if ( ! function_exists('mailto')){/*** Mailto Link** @param string the email address* @param string the link title* @param mixed any attributes* @return string*/function mailto($email, $title = '', $attributes = ''){$title = (string) $title;if ($title === ''){$title = $email;}return '<a href="mailto:'.$email.'"'._stringify_attributes($attributes).'>'.$title.'</a>';}}// ------------------------------------------------------------------------if ( ! function_exists('safe_mailto')){/*** Encoded Mailto Link** Create a spam-protected mailto link written in Javascript** @param string the email address* @param string the link title* @param mixed any attributes* @return string*/function safe_mailto($email, $title = '', $attributes = ''){$title = (string) $title;if ($title === ''){$title = $email;}$x = str_split('<a href="mailto:', 1);for ($i = 0, $l = strlen($email); $i < $l; $i++){$x[] = '|'.ord($email[$i]);}$x[] = '"';if ($attributes !== ''){if (is_array($attributes)){foreach ($attributes as $key => $val){$x[] = ' '.$key.'="';for ($i = 0, $l = strlen($val); $i < $l; $i++){$x[] = '|'.ord($val[$i]);}$x[] = '"';}}else{for ($i = 0, $l = strlen($attributes); $i < $l; $i++){$x[] = $attributes[$i];}}}$x[] = '>';$temp = array();for ($i = 0, $l = strlen($title); $i < $l; $i++){$ordinal = ord($title[$i]);if ($ordinal < 128){$x[] = '|'.$ordinal;}else{if (count($temp) === 0){$count = ($ordinal < 224) ? 2 : 3;}$temp[] = $ordinal;if (count($temp) === $count){$number = ($count === 3)? (($temp[0] % 16) * 4096) + (($temp[1] % 64) * 64) + ($temp[2] % 64): (($temp[0] % 32) * 64) + ($temp[1] % 64);$x[] = '|'.$number;$count = 1;$temp = array();}}}$x[] = '<'; $x[] = '/'; $x[] = 'a'; $x[] = '>';$x = array_reverse($x);$output = "<script type=\"text/javascript\">\n"."\t//<![CDATA[\n"."\tvar l=new Array();\n";for ($i = 0, $c = count($x); $i < $c; $i++){$output .= "\tl[".$i."] = '".$x[$i]."';\n";}$output .= "\n\tfor (var i = l.length-1; i >= 0; i=i-1) {\n"."\t\tif (l[i].substring(0, 1) === '|') document.write(\"&#\"+unescape(l[i].substring(1))+\";\");\n"."\t\telse document.write(unescape(l[i]));\n"."\t}\n"."\t//]]>\n".'</script>';return $output;}}// ------------------------------------------------------------------------if ( ! function_exists('auto_link')){/*** Auto-linker** Automatically links URL and Email addresses.* Note: There's a bit of extra code here to deal with* URLs or emails that end in a period. We'll strip these* off and add them after the link.** @param string the string* @param string the type: email, url, or both* @param bool whether to create pop-up links* @return string*/function auto_link($str, $type = 'both', $popup = FALSE){// Find and replace any URLs.if ($type !== 'email' && preg_match_all('#(\w*://|www\.)[^\s()<>;]+\w#i', $str, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER)){// Set our target HTML if using popup links.$target = ($popup) ? ' target="_blank"' : '';// We process the links in reverse order (last -> first) so that// the returned string offsets from preg_match_all() are not// moved as we add more HTML.foreach (array_reverse($matches) as $match){// $match[0] is the matched string/link// $match[1] is either a protocol prefix or 'www.'//// With PREG_OFFSET_CAPTURE, both of the above is an array,// where the actual value is held in [0] and its offset at the [1] index.$a = '<a href="'.(strpos($match[1][0], '/') ? '' : 'http://').$match[0][0].'"'.$target.'>'.$match[0][0].'</a>';$str = substr_replace($str, $a, $match[0][1], strlen($match[0][0]));}}// Find and replace any emails.if ($type !== 'url' && preg_match_all('#([\w\.\-\+]+@[a-z0-9\-]+\.[a-z0-9\-\.]+[^[:punct:]\s])#i', $str, $matches, PREG_OFFSET_CAPTURE)){foreach (array_reverse($matches[0]) as $match){if (filter_var($match[0], FILTER_VALIDATE_EMAIL) !== FALSE){$str = substr_replace($str, safe_mailto($match[0]), $match[1], strlen($match[0]));}}}return $str;}}// ------------------------------------------------------------------------if ( ! function_exists('prep_url')){/*** Prep URL** Simply adds the http:// part if no scheme is included** @param string the URL* @return string*/function prep_url($str = ''){if ($str === 'http://' OR $str === ''){return '';}$url = parse_url($str);if ( ! $url OR ! isset($url['scheme'])){return 'http://'.$str;}return $str;}}// ------------------------------------------------------------------------if ( ! function_exists('url_title')){/*** Create URL Title** Takes a "title" string as input and creates a* human-friendly URL string with a "separator" string* as the word separator.** @todo Remove old 'dash' and 'underscore' usage in 3.1+.* @param string $str Input string* @param string $separator Word separator* (usually '-' or '_')* @param bool $lowercase Whether to transform the output string to lowercase* @return string*/function url_title($str, $separator = '-', $lowercase = FALSE){if ($separator === 'dash'){$separator = '-';}elseif ($separator === 'underscore'){$separator = '_';}$q_separator = preg_quote($separator, '#');$trans = array('&.+?;' => '','[^\w\d _-]' => '','\s+' => $separator,'('.$q_separator.')+' => $separator);$str = strip_tags($str);foreach ($trans as $key => $val){$str = preg_replace('#'.$key.'#i'.(UTF8_ENABLED ? 'u' : ''), $val, $str);}if ($lowercase === TRUE){$str = strtolower($str);}return trim(trim($str, $separator));}}// ------------------------------------------------------------------------if ( ! function_exists('redirect')){/*** Header Redirect** Header redirect in two flavors* For very fine grained control over headers, you could use the Output* Library's set_header() function.** @param string $uri URL* @param string $method Redirect method* 'auto', 'location' or 'refresh'* @param int $code HTTP Response status code* @return void*/function redirect($uri = '', $method = 'auto', $code = NULL){if ( ! preg_match('#^(\w+:)?//#i', $uri)){$uri = site_url($uri);}// IIS environment likely? Use 'refresh' for better compatibilityif ($method === 'auto' && isset($_SERVER['SERVER_SOFTWARE']) && strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS') !== FALSE){$method = 'refresh';}elseif ($method !== 'refresh' && (empty($code) OR ! is_numeric($code))){if (isset($_SERVER['SERVER_PROTOCOL'], $_SERVER['REQUEST_METHOD']) && $_SERVER['SERVER_PROTOCOL'] === 'HTTP/1.1'){$code = ($_SERVER['REQUEST_METHOD'] !== 'GET')? 303 // reference: http://en.wikipedia.org/wiki/Post/Redirect/Get: 307;}else{$code = 302;}}switch ($method){case 'refresh':header('Refresh:0;url='.$uri);break;default:header('Location: '.$uri, TRUE, $code);break;}exit;}}