Viewing file:  ClickableHook.php (2.71 KB) -rwxrwxr-x
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<?php
/**
* @copyright 2006-2014, Miles Johnson - http://milesj.me
* @license https://github.com/milesj/decoda/blob/master/license.md
* @link http://milesj.me/code/php/decoda
*/
namespace Decoda\Hook;
use Decoda\Hook\AbstractHook;
/**
* Converts URLs and emails (not wrapped in tags) into clickable links.
*/
class ClickableHook extends AbstractHook {
/**
* Matches a link or an email, and converts it to an anchor tag.
*
* @param string $content
* @return string
*/
public function beforeParse($content) {
$parser = $this->getParser();
if ($parser->hasFilter('Url')) {
$protocols = $parser->getFilter('Url')->getConfig('protocols');
$chars = preg_quote('-_=+|\;:&?/[]%,.!@#$*(){}"\'', '/');
$pattern = implode('', array(
'(' . implode('|', $protocols) . ')s?:\/\/', // protocol
'([\w\.\+]+:[\w\.\+]+@)?', // login
'([\w\.]{5,255}+)', // domain, tld
'(:[0-9]{0,6}+)?', // port
'([a-z0-9' . $chars . ']+)?', // query
'(#[a-z0-9' . $chars . ']+)?' // fragment
));
// We replace only links that are "standalone", not inside BB Code tags.
// For example, neither [url="http://www.example.com"] nor [img]http://www.example.com[/img] will be replaced.
$content = preg_replace_callback('/(?<![="\]])(' . $pattern . ')/is', array($this, '_urlCallback'), $content);
}
// Based on W3C HTML5 spec: https://www.w3.org/TR/html5/forms.html#valid-e-mail-address
if ($parser->hasFilter('Email')) {
$pattern = '/(:\/\/[\w\.\+]+:)?([a-z0-9.!#$%&\'*+\/=?^_`{|}~-]+@[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?(?:\.[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?)*)/i';
$content = preg_replace_callback($pattern, array($this, '_emailCallback'), $content);
}
return $content;
}
/**
* Callback for email processing.
*
* @param array $matches
* @return string
*/
protected function _emailCallback($matches) {
// is like http://user:pass@domain.com ? Then we do not touch it.
if ($matches[1]) {
return $matches[0];
}
return $this->getParser()->getFilter('Email')->parse(array(
'tag' => 'email',
'attributes' => array()
), trim($matches[2]));
}
/**
* Callback for URL processing.
*
* @param array $matches
* @return string
*/
protected function _urlCallback($matches) {
return $this->getParser()->getFilter('Url')->parse(array(
'tag' => 'url',
'attributes' => array()
), trim($matches[1]));
}
}
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