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pgleadershipbook / trunk / system / Helpers / url_helper.php
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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) 2014-2019 British Columbia Institute of Technology * Copyright (c) 2019-2020 CodeIgniter Foundation * * 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 CodeIgniter Dev Team * @copyright 2019-2020 CodeIgniter Foundation * @license https://opensource.org/licenses/MIT MIT License * @link https://codeigniter.com * @since Version 4.0.0 * @filesource */ /** * CodeIgniter URL Helpers * * @package CodeIgniter */ if (! function_exists('site_url')) { /** * Return a site URL to use in views * * @param mixed $uri URI string or array of URI segments * @param string|null $protocol * @param \Config\App|null $altConfig Alternate configuration to use * * @return string */ function site_url($uri = '', string $protocol = null, \Config\App $altConfig = null): string { // convert segment array to string if (is_array($uri)) { $uri = implode('/', $uri); } // use alternate config if provided, else default one $config = $altConfig ?? config(\Config\App::class); $fullPath = rtrim(base_url(), '/') . '/'; // Add index page, if so configured if (! empty($config->indexPage)) { $fullPath .= rtrim($config->indexPage, '/'); } if (! empty($uri)) { $fullPath .= '/' . $uri; } $url = new \CodeIgniter\HTTP\URI($fullPath); // allow the scheme to be over-ridden; else, use default if (! empty($protocol)) { $url->setScheme($protocol); } return (string) $url; } } //-------------------------------------------------------------------- if (! function_exists('base_url')) { /** * Return the base URL to use in views * * @param mixed $uri URI string or array of URI segments * @param string $protocol * @return string */ function base_url($uri = '', string $protocol = null): string { // convert segment array to string if (is_array($uri)) { $uri = implode('/', $uri); } $uri = trim($uri, '/'); // We should be using the configured baseURL that the user set; // otherwise get rid of the path, because we have // no way of knowing the intent... $config = \Config\Services::request()->config; // If baseUrl does not have a trailing slash it won't resolve // correctly for users hosting in a subfolder. $baseUrl = ! empty($config->baseURL) && $config->baseURL !== '/' ? rtrim($config->baseURL, '/ ') . '/' : $config->baseURL; $url = new \CodeIgniter\HTTP\URI($baseUrl); unset($config); // Merge in the path set by the user, if any if (! empty($uri)) { $url = $url->resolveRelativeURI($uri); } // If the scheme wasn't provided, check to // see if it was a secure request if (empty($protocol) && \Config\Services::request()->isSecure()) { $protocol = 'https'; } if (! empty($protocol)) { $url->setScheme($protocol); } return rtrim((string) $url, '/ '); } } //-------------------------------------------------------------------- if (! function_exists('current_url')) { /** * Current URL * * Returns the full URL (including segments) of the page where this * function is placed * * @param boolean $returnObject True to return an object instead of a strong * * @return string|\CodeIgniter\HTTP\URI */ function current_url(bool $returnObject = false) { $uri = clone \Config\Services::request()->uri; // If hosted in a sub-folder, we will have additional // segments that show up prior to the URI path we just // grabbed from the request, so add it on if necessary. $baseUri = new \CodeIgniter\HTTP\URI(config(\Config\App::class)->baseURL); if (! empty($baseUri->getPath())) { $uri->setPath(rtrim($baseUri->getPath(), '/ ') . '/' . $uri->getPath()); } // Since we're basing off of the IncomingRequest URI, // we are guaranteed to have a host based on our own configs. return $returnObject ? $uri : (string) $uri->setQuery(''); } } //-------------------------------------------------------------------- if (! function_exists('previous_url')) { /** * Returns the previous URL the current visitor was on. For security reasons * we first check in a saved session variable, if it exists, and use that. * If that's not available, however, we'll use a sanitized url from $_SERVER['HTTP_REFERER'] * which can be set by the user so is untrusted and not set by certain browsers/servers. * * @param boolean $returnObject * * @return \CodeIgniter\HTTP\URI|mixed|string */ function previous_url(bool $returnObject = false) { // Grab from the session first, if we have it, // since it's more reliable and safer. // Otherwise, grab a sanitized version from $_SERVER. $referer = $_SESSION['_ci_previous_url'] ?? \Config\Services::request()->getServer('HTTP_REFERER', FILTER_SANITIZE_URL); $referer = $referer ?? site_url('/'); return $returnObject ? new \CodeIgniter\HTTP\URI($referer) : $referer; } } //-------------------------------------------------------------------- if (! function_exists('uri_string')) { /** * URL String * * Returns the path part of the current URL * * @return string */ function uri_string(): string { return \Config\Services::request()->uri->getPath(); } } //-------------------------------------------------------------------- if (! function_exists('index_page')) { /** * Index page * * Returns the "index_page" from your config file * * @param \Config\App|null $altConfig Alternate configuration to use * @return string */ function index_page(\Config\App $altConfig = null): string { // use alternate config if provided, else default one $config = $altConfig ?? config(\Config\App::class); return $config->indexPage; } } // ------------------------------------------------------------------------ if (! function_exists('anchor')) { /** * Anchor Link * * Creates an anchor based on the local URL. * * @param mixed $uri URI string or array of URI segments * @param string $title The link title * @param mixed $attributes Any attributes * @param \Config\App|null $altConfig Alternate configuration to use * * @return string */ function anchor($uri = '', string $title = '', $attributes = '', \Config\App $altConfig = null): string { // use alternate config if provided, else default one $config = $altConfig ?? config(\Config\App::class); $site_url = is_array($uri) ? site_url($uri, null, $config) : (preg_match('#^(\w+:)?//#i', $uri) ? $uri : site_url($uri, null, $config)); // eliminate trailing slash $site_url = rtrim($site_url, '/'); 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 $uri the URL * @param string $title the link title * @param mixed $attributes any attributes * @param \Config\App|null $altConfig Alternate configuration to use * * @return string */ function anchor_popup($uri = '', string $title = '', $attributes = false, \Config\App $altConfig = null): string { // use alternate config if provided, else default one $config = $altConfig ?? config(\Config\App::class); $site_url = preg_match('#^(\w+:)?//#i', $uri) ? $uri : site_url($uri, '', $config); $site_url = rtrim($site_url, '/'); 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)) { $attributes = [$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 (['width' => '800', 'height' => '600', 'scrollbars' => 'yes', 'menubar' => 'no', 'status' => 'yes', 'resizable' => 'yes', 'screenx' => '0', 'screeny' => '0'] as $key => $val) { $atts[$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 $email the email address * @param string $title the link title * @param mixed $attributes any attributes * * @return string */ function mailto(string $email, string $title = '', $attributes = ''): string { if (trim($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 $email the email address * @param string $title the link title * @param mixed $attributes any attributes * * @return string */ function safe_mailto(string $email, string $title = '', $attributes = ''): string { if (trim($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, $l = mb_strlen($attributes); $i < $l; $i ++) { $x[] = mb_substr($attributes, $i, 1); } } } $x[] = '>'; $temp = []; for ($i = 0, $l = strlen($title); $i < $l; $i ++) { $ordinal = ord($title[$i]); if ($ordinal < 128) { $x[] = '|' . $ordinal; } else { if (empty($temp)) { $count = ($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 = []; } } } $x[] = '<'; $x[] = '/'; $x[] = 'a'; $x[] = '>'; $x = array_reverse($x); // improve obfuscation by eliminating newlines & whitespace $output = '<script type="text/javascript">' . 'var l=new Array();'; for ($i = 0, $c = count($x); $i < $c; $i ++) { $output .= 'l[' . $i . "] = '" . $x[$i] . "';"; } return $output . ('for (var i = l.length-1; i >= 0; i=i-1) {' . "if (l[i].substring(0, 1) === '|') document.write(\"&#\"+unescape(l[i].substring(1))+\";\");" . 'else document.write(unescape(l[i]));' . '}' . '</script>'); } } // ------------------------------------------------------------------------ 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 $str the string * @param string $type the type: email, url, or both * @param boolean $popup whether to create pop-up links * * @return string */ function auto_link(string $str, string $type = 'both', bool $popup = false): string { // Find and replace any URLs. if ($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. * * Formerly used URI, but that does not play nicely with URIs missing * the scheme. * * @param string $str the URL * @return string */ function prep_url(string $str = ''): string { if ($str === 'http://' || $str === '') { return ''; } $url = parse_url($str); if (! $url || ! isset($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. * * @param string $str Input string * @param string $separator Word separator (usually '-' or '_') * @param boolean $lowercase Whether to transform the output string to lowercase * @return string */ function url_title(string $str, string $separator = '-', bool $lowercase = false): string { $q_separator = preg_quote($separator, '#'); $trans = [ '&.+?;' => '', '[^\w\d _-]' => '', '\s+' => $separator, '(' . $q_separator . ')+' => $separator, ]; $str = strip_tags($str); foreach ($trans as $key => $val) { $str = preg_replace('#' . $key . '#iu', $val, $str); } if ($lowercase === true) { $str = mb_strtolower($str); } return trim(trim($str, $separator)); } } // ------------------------------------------------------------------------ if (! function_exists('mb_url_title')) { /** * Create URL Title that takes into account accented characters * * Takes a "title" string as input and creates a * human-friendly URL string with a "separator" string * as the word separator. * * @param string $str Input string * @param string $separator Word separator (usually '-' or '_') * @param boolean $lowercase Whether to transform the output string to lowercase * @return string */ function mb_url_title(string $str, string $separator = '-', bool $lowercase = false): string { helper('text'); return url_title(convert_accented_characters($str), $separator, $lowercase); } } //-------------------------------------------------------------------- |
Commits for pgleadershipbook/trunk/system/Helpers/url_helper.php
Revision | Author | Commited | Message |
---|---|---|---|
2 | tporter | Thu 04 Feb, 2021 09:33:04 +0000 | PG Leadership book initial commit |