Viewing file:  CensorHook.php (3.76 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\Decoda;
use Decoda\Loader\FileLoader;
/**
* Censors words found within the censored.txt blacklist.
*/
class CensorHook extends AbstractHook {
/**
* List of words to censor.
*
* @type array
*/
protected $_blacklist = array();
/**
* Configuration.
*
* @type array
*/
protected $_config = array(
'suffix' => array('ing', 'in', 'er', 'r', 'ed', 'd')
);
/**
* Read the contents of the loaders into the emoticons list.
*/
public function startup() {
if ($this->_blacklist) {
return;
}
// Load files from config paths
foreach ($this->getParser()->getPaths() as $path) {
foreach (glob($path . 'censored.*') as $file) {
$this->addLoader(new FileLoader($file));
}
}
// Load the contents into the blacklist
foreach ($this->getLoaders() as $loader) {
$loader->setParser($this->getParser());
if ($blacklist = $loader->load()) {
$this->blacklist($blacklist);
}
}
}
/**
* Parse the content by censoring blacklisted words.
*
* @param string $content
* @return string
*/
public function beforeParse($content) {
return $this->_censor($content);
}
/**
* Parse the content by censoring blacklisted words.
*
* @param string $content
* @return string
*/
public function beforeStrip($content) {
return $this->_censor($content);
}
/**
* Add words to the blacklist.
*
* @param array $words
* @return \Decoda\Hook\CensorHook
*/
public function blacklist(array $words) {
$this->_blacklist = array_map('trim', array_filter($words)) + $this->_blacklist;
$this->_blacklist = array_unique($this->_blacklist);
return $this;
}
/**
* Return the current blacklist.
*
* @return array
*/
public function getBlacklist() {
return $this->_blacklist;
}
/**
* Trigger censoring.
*
* @param string $content
* @return string
*/
protected function _censor($content) {
$pattern = implode('|', array_map(array($this, '_prepareRegex'), $this->getBlacklist()));
$content = preg_replace_callback('/(?:^|\b)(?:' . $pattern . ')(?:\b|$)/is', array($this, '_censorCallback'), $content);
return $content;
}
/**
* Censor a word if its only by itself.
*
* @param array $matches
* @return string
*/
protected function _censorCallback($matches) {
$length = mb_strlen(trim($matches[0]));
$censored = '';
$symbols = str_shuffle('*@#$*!?%');
$i = 0;
$s = 0;
if ($length > 10) {
$length = 10;
}
while ($i < $length) {
$censored .= $symbols[$s];
$i++;
$s++;
if ($s > 7) {
$s = 0;
}
}
return $censored;
}
/**
* Prepare the regex pattern for each word.
*
* @param string $word
* @return string
*/
protected function _prepareRegex($word) {
$letters = str_split($word);
$regex = '';
foreach ($letters as $letter) {
$regex .= preg_quote($letter, '/') . '+';
}
$suffix = $this->getConfig('suffix');
if (is_array($suffix)) {
$suffix = implode('|', $suffix);
}
$regex .= '(?:' . $suffix . ')?';
return $regex;
}
}
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