<?php
/* *
 * Tiny Spelling Interface for TinyMCE Spell Checking.
 *
 * Copyright © 2006 Moxiecode Systems AB
 */

class TinyGoogleSpell
{
    var $lang;

    function TinyGoogleSpell(&$config, $lang, $mode, $spelling, $jargon, $encoding) 
    {
        $this->lang = $lang;
    }

    // Returns array with bad words or false if failed.
    function checkWords($word_array) 
    {
        $words = array();
        $wordstr = implode(' ', $word_array);

        $matches = $this->_getMatches($wordstr);

        for ($i=0; $i<count($matches); $i++)
            $words[] = $this->unhtmlentities(mb_substr($wordstr, $matches[$i][1], $matches[$i][2], "UTF-8"));

        return $words;
    }

    function unhtmlentities($string) 
    {
        $string = preg_replace('~&#x([0-9a-f]+);~ei', 'chr(hexdec("\\1"))', $string);
        $string = preg_replace('~&#([0-9]+);~e', 'chr(\\1)', $string);

        $trans_tbl = get_html_translation_table(HTML_ENTITIES);
        $trans_tbl = array_flip($trans_tbl);

        return strtr($string, $trans_tbl);
    }

    // Returns array with suggestions or false if failed.
    function getSuggestion($word) 
    {
        $sug = array();

        $matches = $this->_getMatches($word);

        if (count($matches) > 0)
            $sug = explode("\t", utf8_encode($this->unhtmlentities($matches[0][4])));

        return $sug;
    }

    function _xmlChars($string) 
    {
       $trans = get_html_translation_table(HTML_ENTITIES, ENT_QUOTES);
    
       foreach ($trans as $k => $v)
            $trans[$k] = "&#".ord($k).";";

       return strtr($string, $trans);
    }

    function _getMatches($word_list) 
    {
        $server = "www.google.com";
        $port = 443;
        $path = "/tbproxy/spell?lang=" . $this->lang . "&hl=en";
        $host = "www.google.com";
        $url = "https://" . $server;

        // Setup XML request
        $xml = '<?xml version="1.0" encoding="utf-8" ?><spellrequest textalreadyclipped="0" ignoredups="0" ignoredigits="1" ignoreallcaps="1"><text>' . $word_list . '</text></spellrequest>';

        $header  = "POST ".$path." HTTP/1.0 \r\n";
        $header .= "MIME-Version: 1.0 \r\n";
        $header .= "Content-type: application/PTI26 \r\n";
        $header .= "Content-length: ".strlen($xml)." \r\n";
        $header .= "Content-transfer-encoding: text \r\n";
        $header .= "Request-number: 1 \r\n";
        $header .= "Document-type: Request \r\n";
        $header .= "Interface-Version: Test 1.4 \r\n";
        $header .= "Connection: close \r\n\r\n";
        $header .= $xml;
        //$this->_debugData($xml);

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL,$url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $header);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        $xml = curl_exec($ch);
        curl_close($ch);

        //$this->_debugData($xml);

        // Grab and parse content
        preg_match_all('/<c o="([^"]*)" l="([^"]*)" s="([^"]*)">([^<]*)<\/c>/', $xml, $matches, PREG_SET_ORDER);

        return $matches;
    }

    function _debugData($data) 
    {
        $fh = @fopen("debug.log", 'a+');
        @fwrite($fh, $data);
        @fclose($fh);
    }
}

// Setup classname, should be the same as the name of the spellchecker class
$spellCheckerConfig['class'] = "TinyGoogleSpell";

?>