Spellchecker HunSpell driver class for jQuery Spellchecker

hunspell.php

<?php
/**
 * Spellchecker HunSpell driver class
 * !! Hunspell is required !!
 *
 * @package    jQuery Spellchecker (https://github.com/badsyntax/jquery-spellchecker)
 * @author     Taha Zerrouki
 * @copyright  (c) Taha Zerrouki
 * @license    https://github.com/badsyntax/jquery-spellchecker/blob/master/LICENSE-MIT
 */

class SpellChecker_Driver_HunSpell extends Spellchecker_Driver
{

  protected $_default_config = array(
    'dictionary' => 'pspell/dictionary',
    'lang' => 'en'
  );

	private $encoding = "en_US.utf-8";
	
	private $raw;
	private $hunspellVersion;
	
	// Identify a 'miss'. See [man hunspell]
	private $matcher = "/^(?P<type>&)\s(?P<original>\w+)\s(?P<count>\d+)\s(?P<offset>\d+):\s(?P<misses>.*+)$/u";
	
	private $response = array();


  public function __construct($config = array())
  {
    parent::__construct($config);

  }

	
  public function get_suggestions()
  {
    $word = $_POST['word'];
    $this->checkHunspell($word,$this->_config['lang']);
    $response = $this->response;
    $suggestions = array();

    if (isset($response[$word]))
    {
          $suggestions = $response[$word]['misses'];
     }

    $this->send_data(NULL, $suggestions);
  }

  public function get_incorrect_words()
  {
	$language = $this->_config['lang'];
	$input = join(" ", (array)$_POST['text']);

	
	$command = "LANG={$this->encoding}; echo '{$input}' | hunspell  -d {$language} -l ";

	$this->raw = shell_exec($command);
	
	if($this->raw != null)
	{
	$incorrectWords = explode("\n", $this->raw);
	//return $words;
	array_pop($incorrectWords);
	$response[]=$incorrectWords;
	}
	else $response[]=array();
	$this->send_data('success', $response);
  }

  public function add_to_dictionary()
  {
  }
  public function checkHunspell($input, $language = null){

	if(($language == null) or ($input=="")) return ;  
		
	$command = "LANG={$this->encoding}; echo '{$input}' | hunspell -d {$language} ";
	
	$this->raw = shell_exec($command);
		
	$this->parse();
    }

   private function parse(){
	if($this->raw == null) throw new Exception("Can't parse: no response.");
		
	// Split the response into lines.
	$lines = explode("\n", $this->raw);

	// First item is the version #
	$this->hunspellVersion = $lines[0];
		
	unset($lines[0]);
		
	foreach($lines as $line){
	preg_match($this->matcher, $line, $matches);
			
	if(count($matches) == 0) continue;

			if($matches['type'] == "&") {
			
				$this->response[$matches['original']] = array(
					"count" => $matches['count'],
					"offset" => $matches['offset'],
					"misses" => explode(", ", $matches['misses'])
				);
			
			}
		}
	}
	
  public function get()
	{
		return $this->response;
	}



}